CN113025092A - Inorganic anticorrosive paint and preparation method thereof - Google Patents
Inorganic anticorrosive paint and preparation method thereof Download PDFInfo
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- 238000002360 preparation method Methods 0.000 title claims abstract description 45
- 239000003973 paint Substances 0.000 title claims abstract description 43
- 238000000576 coating method Methods 0.000 claims abstract description 97
- 239000011248 coating agent Substances 0.000 claims abstract description 84
- 239000000843 powder Substances 0.000 claims abstract description 79
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 71
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 claims abstract description 68
- 229960001763 zinc sulfate Drugs 0.000 claims abstract description 68
- 229910000368 zinc sulfate Inorganic materials 0.000 claims abstract description 68
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 57
- 239000008367 deionised water Substances 0.000 claims abstract description 33
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 33
- 229910019142 PO4 Inorganic materials 0.000 claims abstract description 30
- 239000010452 phosphate Substances 0.000 claims abstract description 30
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims abstract description 30
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 21
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 21
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910021485 fumed silica Inorganic materials 0.000 claims abstract description 16
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 16
- 150000002910 rare earth metals Chemical class 0.000 claims abstract description 16
- 239000002994 raw material Substances 0.000 claims abstract description 14
- 229910052751 metal Inorganic materials 0.000 claims description 106
- 239000002184 metal Substances 0.000 claims description 106
- 239000000835 fiber Substances 0.000 claims description 84
- 239000000463 material Substances 0.000 claims description 45
- 239000006185 dispersion Substances 0.000 claims description 35
- 238000005507 spraying Methods 0.000 claims description 23
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims description 22
- 239000011812 mixed powder Substances 0.000 claims description 22
- 229910052901 montmorillonite Inorganic materials 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 21
- 238000001035 drying Methods 0.000 claims description 17
- 238000002156 mixing Methods 0.000 claims description 15
- 238000010276 construction Methods 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 13
- 238000002203 pretreatment Methods 0.000 claims description 13
- 230000009471 action Effects 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 12
- 238000002425 crystallisation Methods 0.000 claims description 12
- 230000008025 crystallization Effects 0.000 claims description 12
- 238000003860 storage Methods 0.000 claims description 12
- 239000000758 substrate Substances 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 9
- 238000011068 loading method Methods 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 5
- 238000010298 pulverizing process Methods 0.000 claims description 5
- 238000005488 sandblasting Methods 0.000 claims description 5
- 238000004506 ultrasonic cleaning Methods 0.000 claims description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 4
- RGPUVZXXZFNFBF-UHFFFAOYSA-K diphosphonooxyalumanyl dihydrogen phosphate Chemical group [Al+3].OP(O)([O-])=O.OP(O)([O-])=O.OP(O)([O-])=O RGPUVZXXZFNFBF-UHFFFAOYSA-K 0.000 claims description 4
- 239000000395 magnesium oxide Substances 0.000 claims description 4
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 4
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 4
- 239000005543 nano-size silicon particle Substances 0.000 claims description 4
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 235000019832 sodium triphosphate Nutrition 0.000 claims description 3
- UNXRWKVEANCORM-UHFFFAOYSA-I triphosphate(5-) Chemical compound [O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O UNXRWKVEANCORM-UHFFFAOYSA-I 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims 1
- 239000000853 adhesive Substances 0.000 abstract description 11
- 230000001070 adhesive effect Effects 0.000 abstract description 11
- 230000000052 comparative effect Effects 0.000 description 69
- 239000000243 solution Substances 0.000 description 48
- 238000005260 corrosion Methods 0.000 description 5
- 239000013078 crystal Substances 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 4
- 230000018044 dehydration Effects 0.000 description 3
- 238000006297 dehydration reaction Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 238000011049 filling Methods 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000004062 sedimentation Methods 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005536 corrosion prevention Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 239000012266 salt solution Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 241000282414 Homo sapiens Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000006259 organic additive Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
- C09D5/10—Anti-corrosive paints containing metal dust
- C09D5/106—Anti-corrosive paints containing metal dust containing Zn
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention discloses an inorganic anticorrosive paint and a preparation method thereof, wherein the paint comprises a component A and a component B, the component A comprises 20-30 parts of soluble phosphate, 5-8 parts of rare earth ultrafine powder, 10-20 parts of nano metal oxide powder, 40-70 parts of deionized water and 2-3 parts of fumed silica, and the preparation raw materials of the component B comprise flaky superfine zinc powder, zinc sulfate powder and water. The inorganic anticorrosive coating provided by the invention can obviously improve the anticorrosive performance of the coating, has good adhesive force and high coating strength, and particularly, the coating is a pure inorganic component, and the raw materials are directly obtained from the nature, are rich in sources, and are green and environment-friendly.
Description
Technical Field
The invention belongs to the technical field of inorganic coatings, and particularly relates to an inorganic anticorrosive coating and a preparation method thereof.
Background
The rapid development of modern world economic leap and world industrialization leads to the rapid deterioration of the global environment, and serious pollution threatens the living space of human beings. "green" and "environmental protection" are requirements that people put forward to the paint industry after highly paying attention to the ecological environment protection, and are the development direction of paint. The inorganic coating belongs to all-inorganic mineral coatings, has natural environmental protection property, has aging resistance and certain physical and chemical properties which are difficult to achieve by most of organic coatings with the same production cost, and has better technical and economic properties and application prospects.
The anticorrosive coating is generally divided into a conventional anticorrosive coating and a heavy anticorrosive coating, and is an essential coating in paint coatings. The conventional anticorrosive paint plays a role in corrosion resistance on metals and the like under general conditions, and protects the service life of nonferrous metals; the heavy-duty anticorrosive coating is an anticorrosive coating which can be applied in a relatively severe corrosive environment compared with a conventional anticorrosive coating and has a longer protection period than the conventional anticorrosive coating. Most of the anticorrosive coatings on the market at present are organic anticorrosive coatings which are composed of organic resin emulsion as a base material, a filler and an anticorrosive pigment, and the organic anticorrosive coatings cause serious pollution to the environment.
Although the existing inorganic anticorrosive paint takes inorganic materials as main film forming substances, most of the existing inorganic anticorrosive paint is modified by adding organic components, or some organic additives are directly added, so that the existing inorganic anticorrosive paint does not conform to the concept of green environmental protection; the anticorrosive paint containing a few pure inorganic components has general performances such as anticorrosive performance, adhesive force, coating strength and the like, and is difficult to meet the requirements of industrial application.
In summary, how to design an inorganic anticorrosive coating, the raw materials of which are pure inorganic components, are not only green and environment-friendly, but also have excellent performances such as anticorrosive performance, adhesive force, coating strength and the like, and are problems which need to be solved urgently at present.
Disclosure of Invention
The invention aims to solve the technical problems, and provides an inorganic anticorrosive coating and a preparation method thereof, which can obviously improve the anticorrosive performance of the coating, have good adhesive force and high coating strength, particularly the coating is a pure inorganic component, and the raw materials are directly obtained from the nature, have rich sources and are green and environment-friendly.
The inorganic anticorrosive paint comprises a component A and a component B, wherein the component A comprises 20-30 parts of soluble phosphate, 5-8 parts of rare earth ultrafine powder, 10-20 parts of nano metal oxide powder, 40-70 parts of deionized water and 2-3 parts of fumed silica, and the preparation raw materials of the component B comprise flaky superfine zinc powder, zinc sulfate powder and water.
Further, the mass ratio of the component A to the component B is 1: (0.3-0.5), wherein the mass ratio of the flaky superfine zinc powder to the zinc sulfate powder to the water is 1: (0.2-0.3): (0.8-1.2).
Further, the soluble phosphate is aluminum dihydrogen phosphate or aluminum dihydrogen tripolyphosphate, the nano metal oxide powder comprises 0-5 parts of nano aluminum oxide, 0-10 parts of nano magnesium oxide and 0-5 parts of nano silicon oxide, the median particle size of the flaky superfine zinc powder is 10-15 mu m, and the thickness of the flaky superfine zinc powder is 0.1-0.2 mu m.
A preparation method of an inorganic anticorrosive paint comprises the following steps:
preparation of component A: dissolving soluble phosphate in deionized water to obtain a solution, then uniformly mixing rare earth ultrafine powder, nano metal oxide powder and fumed silica to obtain mixed powder, uniformly mixing the mixed powder and the solution, and placing the mixed powder and the solution in a 1200-1800 r/min ultramicro dispersion machine for dispersion for 20-40min to obtain a dispersion liquid of a component A;
preparation of the component B: dissolving zinc sulfate powder in deionized water to prepare zinc sulfate solution, then loading the flaky superfine zinc powder and the zinc sulfate solution into two storage tanks, spraying the flaky superfine zinc powder and the zinc sulfate solution into a jet mill at 98-102 ℃ under the action of a nozzle at 0.25-0.3MPa, stopping heating after spraying, continuously cooling to- (2-4) DEG C in the jet mill for crystallization, taking out the crystallized material, centrifugally dewatering, and drying to obtain the component B.
Further, the component A also comprises 3-6 parts of metal fibers, and the diameter of each metal fiber is 0.5-0.8 μm.
The metal fibers have a work function less than the metal substrate to which the coating is applied. At the moment, the metal fibers are in close contact with the pores of the metal base material, the metal fibers lose electrons and show positive electricity, and the metal base material obtains electrons and shows negative electricity, so that a contact potential difference is generated between the metal fibers and the metal base material, and the adhesive force of the metal fibers and the metal base material is enhanced. However, if the metal fibers have a work function greater than the metal substrate to which the coating is applied, the metal substrate loses electrons, resulting in corrosion of the metal substrate.
Another preparation method of the inorganic anticorrosive paint comprises the following steps:
preparation of component A: firstly, 7/8 soluble phosphate is dissolved in deionized water to obtain solution, then metal fiber is pretreated and then is uniformly mixed with rare earth ultrafine powder, nano metal oxide powder and fumed silica to obtain mixed powder, then the mixed powder and the solution are uniformly mixed and are placed in an ultrafine dispersion machine of 1200-1800 r/min for dispersion for 20-40min to obtain dispersion liquid of the component A;
preparation of the component B: dissolving zinc sulfate powder in deionized water to prepare zinc sulfate solution, then loading the flaky superfine zinc powder and the zinc sulfate solution into two storage tanks, spraying the flaky superfine zinc powder and the zinc sulfate solution into a jet mill at 98-102 ℃ under the action of a nozzle at 0.25-0.3MPa, stopping heating after spraying, continuously cooling to- (2-4) DEG C in the jet mill for crystallization, taking out the crystallized material, centrifugally dewatering, and drying to obtain the component B.
Further, the pretreatment method of the metal fiber comprises the following steps:
s1, performing sand blasting treatment on the metal fibers, and performing ultrasonic cleaning for 10-15min for later use;
s2, cleaning and drying montmorillonite, and pulverizing into 0.3-0.5 μm ultrafine montmorillonite powder in an ultrafine pulverizer;
s3, mixing the metal fiber treated by the S1 with the rest 1/8 soluble phosphate and the material obtained by the S2, and then placing the mixture in an ultramicro dispersion machine of 700 and 800 r/min for dispersion for 30-60min to obtain the pretreated metal fiber.
Further, the mass ratio of the metal fiber to the montmorillonite is 1: (0.2-0.4).
The use method of the inorganic anticorrosive paint comprises the following steps: the component A and the component B are uniformly mixed according to the proportion, put into a stirrer with the speed of 400 plus materials and the speed of 500r/min for stirring for 5-10min, then kept stand at normal temperature for 30-40min, and then longitudinally stirred for 5-10min at the speed of 100 plus materials and the speed of 120r/min, so that the coating can be used for construction, coated on the surface of a base material during construction, and cured at normal temperature or heated to 60-80 ℃.
The invention has the beneficial effects that:
(1) the inorganic anticorrosive coating provided by the invention can obviously improve the anticorrosive performance of the coating, has good adhesive force and high coating strength, and particularly, the coating is a pure inorganic component, and the raw materials are directly obtained from the nature, are rich in source and are green and environment-friendly;
(2) because the greater factor of the anticorrosive performance of the coating depends on the distribution of zinc powder, the coating is divided into the component A (basic component) and the component B (anticorrosive component), so that the anticorrosive component of the coating is independently and separately prepared and stored, and the two components are directly and uniformly mixed when in use, thereby reducing the phenomena of instability and sedimentation of the anticorrosive component and fully playing the anticorrosive role of the anticorrosive component;
(3) when the component B is prepared, zinc sulfate solution is prepared into crystals to be coated on the surface of zinc powder, so that the density of zinc powder coatings is reduced, the sedimentation of the zinc powder is avoided, the compatibility of the zinc powder and a coating is increased, the zinc powder is uniformly dispersed in the coating, and the using amount of the zinc powder is reduced; after the component A and the component B are fully mixed, the crystal body in the component B can be gradually dissolved in the water medium, and the zinc powder can fully play a role in corrosion prevention;
(4) in the process of using the inorganic anticorrosive paint, when the component A and the component B are just mixed, crystals in the component B can be gradually dissolved in a water medium, the position of zinc powder in the paint is basically stable, but the salt solution precipitated from the zinc sulfate crystals can lead the paint to be non-uniformly dispersed, so the invention adopts longitudinal stirring in the follow-up process, avoids the fluctuation of the upper and lower positions of the zinc powder, and disperses the precipitated salt solution;
(5) according to the invention, the component A is also added with the metal fiber, the coating is mainly used for corrosion prevention of the metal base material, when the metal fiber is added into the coating, the tiny metal fiber can be in close contact with the pores of the metal base material, and the metal fiber loses electron positive charge and obtains electron negative charge due to the fact that the work function of the metal fiber is smaller than that of the metal base material to which the coating is applied, so that a contact potential difference is generated between the metal fiber and the metal base material, the adhesive force between the metal fiber and the metal base material is enhanced, the adhesive force between the coating and the metal base material is integrally enhanced, and the coating strength of the coating is also enhanced due to the addition of the metal fiber;
(6) when the metal fiber is pretreated, the ultramicro montmorillonite powder is introduced into the metal fiber, so that the pores of the metal fiber can be filled, the strength of the metal fiber is enhanced, and an inorganic adhesive (soluble phosphate) can be introduced into the porous structure of the ultramicro montmorillonite powder, so that the compatibility and the caking property of the metal fiber and a coating are enhanced.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The embodiment provides an inorganic anticorrosive paint which comprises a component A and a component B, wherein the component A comprises 20 parts of soluble phosphate, 5 parts of rare earth ultrafine powder, 10 parts of nano metal oxide powder, 40 parts of deionized water and 2 parts of fumed silica, and preparation raw materials of the component B comprise flaky superfine zinc powder, zinc sulfate powder and water.
The mass ratio of the component A to the component B is 1: 0.3, wherein the mass ratio of the flaky superfine zinc powder to the zinc sulfate powder to the water is 1: 0.2: 0.8.
the soluble phosphate is aluminum dihydrogen phosphate, the nano metal oxide powder comprises 10 parts of nano magnesium oxide, the median particle size of the flaky superfine zinc powder is 10 micrometers, and the thickness of the flaky superfine zinc powder is 0.1 micrometer.
The embodiment also provides a preparation method of the inorganic anticorrosive paint, which comprises the following steps:
preparation of component A: dissolving soluble phosphate in deionized water to obtain a solution, then uniformly mixing rare earth ultrafine powder, nano metal oxide powder and fumed silica to obtain mixed powder, uniformly mixing the mixed powder and the solution, and placing the mixed powder and the solution in an ultrafine dispersion machine of 1200 r/min for dispersion for 20min to obtain a dispersion liquid of a component A;
preparation of the component B: dissolving zinc sulfate powder in deionized water to prepare zinc sulfate solution, then separately loading the flaky superfine zinc powder and the zinc sulfate solution into two storage tanks, simultaneously spraying the flaky superfine zinc powder and the zinc sulfate solution into a 98 ℃ jet mill under the action of a 0.25MPa nozzle, stopping heating after spraying, continuously cooling to-2 ℃ in the jet mill for crystallization, taking out the crystallized material, centrifugally dehydrating, and drying to obtain the component B.
The embodiment also provides a using method of the inorganic anticorrosive paint, which comprises the following steps: the component A and the component B are uniformly mixed according to the proportion, put into a stirrer of 400r/min and stirred for 5min, then kept stand at normal temperature for 30min, and then longitudinally stirred for 5min at the speed of 100r/min, so that the coating can be used for construction, the coating is coated on the surface of a base material during construction, and the coating is cured at normal temperature or heated to 60 ℃.
Example 2
The embodiment provides an inorganic anticorrosive paint which comprises a component A and a component B, wherein the component A comprises 20 parts of soluble phosphate, 5 parts of rare earth ultrafine powder, 10 parts of nano metal oxide powder, 40 parts of deionized water, 2 parts of fumed silica and 3 parts of metal fiber, and the preparation raw materials of the component B comprise flaky superfine zinc powder, zinc sulfate powder and water.
The diameter of the metal fiber is 0.5 μm, and the work function of the metal fiber is smaller than that of the metal substrate to which the coating is applied.
The embodiment also provides a preparation method of the inorganic anticorrosive paint, which comprises the following steps:
preparation of component A: firstly, 7/8 soluble phosphate is dissolved in deionized water to obtain solution, then metal fiber is pretreated and then is uniformly mixed with rare earth ultrafine powder, nano metal oxide powder and fumed silica to obtain mixed powder, then the mixed powder and the solution are uniformly mixed and placed in a 1200 r/min ultramicro dispersion machine for dispersion for 20min to obtain dispersion liquid of the component A;
preparation of the component B: dissolving zinc sulfate powder in deionized water to prepare zinc sulfate solution, then separately loading the flaky superfine zinc powder and the zinc sulfate solution into two storage tanks, simultaneously spraying the flaky superfine zinc powder and the zinc sulfate solution into a 98 ℃ jet mill under the action of a 0.25MPa nozzle, stopping heating after spraying, continuously cooling to-2 ℃ in the jet mill for crystallization, taking out the crystallized material, centrifugally dehydrating, and drying to obtain the component B.
The pretreatment method of the metal fiber comprises the following steps:
s1, performing sand blasting treatment on the metal fibers, and performing ultrasonic cleaning for 10min for later use;
s2, cleaning and drying montmorillonite, and pulverizing into 0.3 μm ultrafine montmorillonite powder in an ultrafine pulverizer;
and S3, mixing the metal fiber treated by the S1 with the rest 1/8 soluble phosphate and the material obtained by the S2, and dispersing in an ultramicro dispersion machine at 700r/min for 30min to obtain the pretreated metal fiber.
The mass ratio of the metal fiber to the montmorillonite is 1: 0.2.
the embodiment also provides a using method of the inorganic anticorrosive paint, which comprises the following steps: the component A and the component B are uniformly mixed according to the proportion, put into a stirrer of 400r/min and stirred for 5min, then kept stand at normal temperature for 30min, and then longitudinally stirred for 5min at the speed of 100r/min, so that the coating can be used for construction, the coating is coated on the surface of a base material during construction, and the coating is cured at normal temperature or heated to 60 ℃.
The rest is the same as example 1.
Example 3
The embodiment provides an inorganic anticorrosive paint which comprises a component A and a component B, wherein the component A comprises 25 parts of soluble phosphate, 6.5 parts of rare earth ultrafine powder, 15 parts of nano metal oxide powder, 55 parts of deionized water, 2.5 parts of fumed silica and 4.5 parts of metal fibers, and the preparation raw materials of the component B comprise flaky superfine zinc powder, zinc sulfate powder and water.
The mass ratio of the component A to the component B is 1: 0.4, wherein the mass ratio of the flaky superfine zinc powder to the zinc sulfate powder to the water is 1: 0.25: 1.
the soluble phosphate is aluminum dihydrogen tripolyphosphate, the nano metal oxide powder comprises 5 parts of nano aluminum oxide and 5 parts of nano silicon oxide, the median particle size of the flaky superfine zinc powder is 12.5 mu m, and the thickness of the flaky superfine zinc powder is 0.15 mu m.
The diameter of the metal fibers is 0.65 μm, and the work function of the metal fibers is smaller than that of the metal substrate to which the coating is applied.
The embodiment also provides a preparation method of the inorganic anticorrosive paint, which comprises the following steps:
preparation of component A: firstly, 7/8 soluble phosphate is dissolved in deionized water to obtain solution, then metal fiber is pretreated and then is uniformly mixed with rare earth ultrafine powder, nano metal oxide powder and fumed silica to obtain mixed powder, then the mixed powder and the solution are uniformly mixed and placed in a 1500 r/min ultramicro dispersion machine for dispersion for 30min to obtain dispersion liquid of the component A;
preparation of the component B: dissolving zinc sulfate powder in deionized water to prepare zinc sulfate solution, then separately loading the flaky superfine zinc powder and the zinc sulfate solution into two storage tanks, simultaneously spraying the flaky superfine zinc powder and the zinc sulfate solution into a 100 ℃ jet mill under the action of a 0.27MPa nozzle, stopping heating after spraying, continuously cooling to-3 ℃ in the jet mill for crystallization, taking out the crystallized material, centrifugally dehydrating, and drying to obtain the component B.
The pretreatment method of the metal fiber comprises the following steps:
s1, performing sand blasting treatment on the metal fibers, and performing ultrasonic cleaning for 12min for later use;
s2, cleaning and drying montmorillonite, and pulverizing into 0.4 μm ultrafine montmorillonite powder in an ultrafine pulverizer;
and S3, mixing the metal fiber treated by the S1 with the rest 1/8 soluble phosphate and the material obtained by the S2, and dispersing in an ultramicro dispersion machine at 750 r/min for 45min to obtain the pretreated metal fiber.
The mass ratio of the metal fiber to the montmorillonite is 1: 0.3.
the embodiment also provides a using method of the inorganic anticorrosive paint, which comprises the following steps: the component A and the component B are uniformly mixed according to the proportion, put into a stirrer of 450r/min and stirred for 8min, then kept stand at normal temperature for 35min, and then longitudinally stirred for 8min at the speed of 110r/min, so that the coating can be used for construction, the coating is coated on the surface of a base material during construction, and the coating is cured at normal temperature or heated to 70 ℃.
Example 4
The embodiment provides an inorganic anticorrosive paint which comprises a component A and a component B, wherein the component A comprises 30 parts of soluble phosphate, 8 parts of rare earth ultrafine powder, 20 parts of nano metal oxide powder, 70 parts of deionized water, 3 parts of fumed silica and 6 parts of metal fiber, and the preparation raw materials of the component B comprise flaky superfine zinc powder, zinc sulfate powder and water.
The mass ratio of the component A to the component B is 1: 0.5, wherein the mass ratio of the flaky superfine zinc powder to the zinc sulfate powder to the water is 1: 0.3: 1.2.
the soluble phosphate is aluminum dihydrogen phosphate, the nano metal oxide powder comprises 2.5 parts of nano aluminum oxide, 5 parts of nano magnesium oxide and 2.5 parts of nano silicon oxide, the median particle size of the flaky superfine zinc powder is 15 micrometers, and the thickness of the flaky superfine zinc powder is 0.2 micrometer.
The diameter of the metal fiber is 0.8 μm, and the work function of the metal fiber is smaller than that of the metal substrate to which the coating is applied.
The embodiment also provides a preparation method of the inorganic anticorrosive paint, which comprises the following steps:
preparation of component A: firstly, 7/8 soluble phosphate is dissolved in deionized water to obtain solution, then metal fiber is pretreated and then is uniformly mixed with rare earth ultrafine powder, nano metal oxide powder and fumed silica to obtain mixed powder, then the mixed powder and the solution are uniformly mixed and are placed in an ultrafine dispersion machine of 1200-1800 r/min for dispersion for 20-40min to obtain dispersion liquid of the component A;
preparation of the component B: dissolving zinc sulfate powder in deionized water to prepare zinc sulfate solution, then separately loading the flaky superfine zinc powder and the zinc sulfate solution into two storage tanks, simultaneously spraying the flaky superfine zinc powder and the zinc sulfate solution into a 102 ℃ jet mill under the action of a 0.3MPa nozzle, stopping heating after spraying, continuously cooling to-4 ℃ in the jet mill for crystallization, taking out the crystallized material, centrifugally dehydrating, and drying to obtain the component B.
The pretreatment method of the metal fiber comprises the following steps:
s1, performing sand blasting treatment on the metal fibers, and performing ultrasonic cleaning for 15min for later use;
s2, cleaning and drying montmorillonite, and pulverizing into 0.5 μm ultrafine montmorillonite powder in an ultrafine pulverizer;
and S3, mixing the metal fiber treated by the S1 with the rest 1/8 soluble phosphate and the material obtained by the S2, and dispersing in an ultramicro dispersion machine at the speed of 800 r/min for 60min to obtain the pretreated metal fiber.
The mass ratio of the metal fiber to the montmorillonite is 1: 0.4.
the embodiment also provides a using method of the inorganic anticorrosive paint, which comprises the following steps: the component A and the component B are uniformly mixed according to the proportion, put into a 500r/min stirrer to be stirred for 10min, then kept stand at normal temperature for 40min, and then longitudinally stirred for 10min at the speed of 120r/min, so that the coating can be used for construction, the coating is coated on the surface of a base material during construction, and the coating is cured at normal temperature or heated to 80 ℃ for curing.
Comparative example 1
This comparative example is different from example 2 in that the component B is not included in the inorganic anticorrosive coating material.
Comparative example 2
The comparative example differs from example 2 in that the flaky ultrafine zinc powder in the component B is replaced with the flaky ultrafine zinc powder in the component A, and the preparation method of the component A is as follows: firstly, 7/8 soluble phosphate is dissolved in deionized water to obtain solution, then metal fiber is pretreated and then is uniformly mixed with rare earth ultrafine powder, nano metal oxide powder, fumed silica and flaky ultrafine zinc powder to obtain mixed powder, then the mixed powder and the solution are uniformly mixed, and the mixed powder and the solution are placed in an ultrafine dispersion machine of 1200 r/min for dispersion for 20min to obtain dispersion liquid of the component A.
The preparation method of the component B comprises the following steps: dissolving zinc sulfate powder in deionized water to prepare a zinc sulfate solution, then filling the zinc sulfate solution into a storage tank, spraying the zinc sulfate solution into a jet mill at 98 ℃ under the action of a nozzle at 0.25MPa, stopping heating after spraying, continuously cooling in the jet mill to-2 ℃ for crystallization, then taking out crystallized materials, centrifugally dewatering, and drying to obtain the component B.
Comparative example 3
The comparative example differs from example 2 in that the raw materials for the preparation of component B do not include zinc sulfate powder, and in this case component B is prepared by the following method: and (2) respectively filling the flaky superfine zinc powder and the deionized water into two storage tanks, simultaneously spraying the flaky superfine zinc powder and the deionized water into a 98 ℃ jet mill under the action of a 0.25MPa nozzle, stopping heating after spraying, continuously cooling to-2 ℃ in the jet mill for crystallization, taking out a crystallized material, and performing centrifugal dehydration to obtain the component B.
Comparative example 4
This comparative example differs from example 2 in that the starting material for the preparation of component B does not include deionized water, in which case component B is prepared by the following method: and (2) respectively filling the flaky superfine zinc powder and the zinc sulfate powder into two storage tanks, simultaneously spraying the flaky superfine zinc powder and the zinc sulfate powder into a 98-DEG C airflow crusher under the action of a 0.25MPa nozzle, stopping heating after spraying, continuously cooling to-2℃ in the airflow crusher, taking out materials, centrifugally dewatering, and drying to obtain the component B.
Comparative example 5
The difference between the comparative example and the example 2 is that the mass ratio of the flaky superfine zinc powder to the zinc sulfate powder to the water is 0.8: 0.2: 0.8.
comparative example 6
The difference between the comparative example and the example 2 is that the mass ratio of the flaky superfine zinc powder to the zinc sulfate powder to the water is 1.2: 0.2: 0.8.
comparative example 7
The difference between the comparative example and the example 2 is that the mass ratio of the flaky superfine zinc powder to the zinc sulfate powder to the water is 1: 0.1: 0.8.
comparative example 8
The difference between the comparative example and the example 2 is that the mass ratio of the flaky superfine zinc powder to the zinc sulfate powder to the water is 1: 0.4: 0.8.
comparative example 9
The difference between the comparative example and the example 2 is that the mass ratio of the flaky superfine zinc powder to the zinc sulfate powder to the water is 1: 0.2: 0.6.
comparative example 10
The difference between the comparative example and the example 2 is that the mass ratio of the flaky superfine zinc powder to the zinc sulfate powder to the water is 1: 0.2: 1.4.
comparative example 11
The difference between the comparative example and example 2 is that in the preparation method of the component B, the formation of the crystallized material is carried out in a common container, and the specific steps are that zinc sulfate powder is dissolved in deionized water to prepare zinc sulfate solution, then the flaky superfine zinc powder and the zinc sulfate solution are respectively and slowly added into the container under the heating condition of 98 ℃, the mixture is uniformly mixed, then the mixture is cooled to-2 ℃ for crystallization, and then the crystallized material is taken out for centrifugal dehydration and drying to obtain the component B.
Comparative example 12
The difference between the comparative example and the example 2 is that in the preparation method of the component B, zinc sulfate powder is not dissolved in deionized water in advance to prepare zinc sulfate solution, and the specific steps comprise that flaky superfine zinc powder, zinc sulfate powder and deionized water are separately loaded in three storage tanks, under the action of a nozzle of 0.25MPa, the three components are simultaneously sprayed into a 98 ℃ airflow pulverizer, heating is stopped after spraying, the mixture is continuously cooled to-2 ℃ in the airflow pulverizer to crystallize, and then the crystallized material is taken out for centrifugal dehydration and drying to obtain the component B.
Comparative example 13
The difference between the comparative example and example 2 is that in the preparation method of the component B, the flaky superfine zinc powder and zinc sulfate solution directly enter the jet mill through the feed inlet without adopting a nozzle of 0.25 MPa.
Comparative example 14
The comparative example differs from example 2 in that in the preparation of component B, the flaky ultrafine zinc powder and zinc sulfate solution were sprayed into the jet mill and finished without cooling crystallization.
Comparative example 15
This comparative example differs from example 3 in that the metal fibers are exchanged for the kind of metal material of the metal substrate used for the coating, when the work function of the metal fibers is larger than that of the metal substrate used for the coating.
Comparative example 16
This comparative example differs from example 3 in that in component a, the metal fibers have a diameter of 0.4 μm.
Comparative example 17
This comparative example differs from example 3 in that in component A, the metal fibers have a diameter of 1 μm.
Comparative example 18
This comparative example differs from example 3 in that the preparation of the a-component is carried out without pretreatment of the metal fibers.
Comparative example 19
This comparative example differs from example 3 in that the remaining 1/8 soluble phosphate was not used in the pretreatment process for the metal fibers, in which case the a component was prepared by first dissolving all of the soluble phosphate in deionized water to obtain a solution.
Comparative example 20
This comparative example is different from example 3 in that the pretreatment method of the metal fiber does not include step S1.
Comparative example 21
This comparative example differs from example 3 in that in the pretreatment method of the metal fiber, montmorillonite is not used, and step S2 is not included, and step S3 is: and mixing the metal fiber treated by the S1 with the rest 1/8 soluble phosphate, and dispersing in an ultramicro dispersion machine at 750 r/min for 45min to obtain the pretreated metal fiber.
Comparative example 22
This comparative example is different from example 3 in that the diameter of the ultra fine montmorillonite powder is 0.2 μm in step S2 of the pretreatment method for metal fiber.
Comparative example 23
This comparative example is different from example 3 in that the diameter of the ultra fine montmorillonite powder was 0.6 μm in step S2 of the pretreatment method for metal fibers.
Comparative example 24
The comparative example is different from example 3 in that in the pretreatment method of the metal fiber, the mass ratio of the metal fiber to the montmorillonite is 1: 0.1.
comparative example 25
The comparative example is different from example 3 in that in the pretreatment method of the metal fiber, the mass ratio of the metal fiber to the montmorillonite is 1: 0.5.
comparative example 26
The comparative example differs from example 4 in that the coating is applied in a manner such that after the first mixing of the component A and the component B, the mixture is not allowed to stand at normal temperature.
Comparative example 27
This comparative example differs from example 4 in that the coating is applied by a method in which the A and B components are mixed and then stirred in the transverse direction for the second stirring.
Comparative example 28
This comparative example differs from example 4 in that the coating material was applied in such a manner that the second stirring was carried out at a speed of 80r/min after mixing the components A and B.
Comparative example 29
This comparative example differs from example 4 in that the coating material was applied in such a way that the second stirring was carried out at a speed of 140r/min after mixing of the A-and B-components.
Comparative example 30
The comparative example differs from example 4 in that the ratio of component a to component B is 1: 0.2.
comparative example 31
The comparative example differs from example 4 in that the ratio of component a to component B is 1: 0.6.
testing of corrosion resistance of inorganic anticorrosive paint
The inorganic anticorrosive coatings prepared in examples 1 to 4 and comparative examples 1 to 14 and 26 to 31 were subjected to an anticorrosive performance test according to the standard for anticorrosive coatings for steel structures for construction (JG/T224-2007), wherein the coating aging was rated according to the standard of GB-T1766-1995, and the results are shown in Table 1:
as is clear from the results in Table 1, the inorganic anticorrosive coatings prepared in examples 1 to 4 of the present invention are excellent in the four performance indexes of water resistance, acid resistance, salt spray resistance and water resistance, and are significantly higher than those of comparative examples 1 to 14.
Compared with the example 2, the comparative example 2 replaces the flaky superfine zinc powder in the component B into the component A, namely the basic component and the anticorrosive component are mixed together, so that the four properties of water resistance, acid resistance, salt spray resistance and water resistance are obviously reduced, and the phenomena of instability and sedimentation of the anticorrosive component are reduced and the anticorrosive effect of the anticorrosive component is fully exerted after the anticorrosive component of the coating is independently and separately prepared and stored.
Comparative examples 3-14 changed the preparation raw materials, proportion and concrete preparation steps of component B, and the result also declined four performance indexes, which shows that only zinc sulfate and deionized water were prepared into solution, and then made into crystals to be wrapped on the surface of zinc powder, thus reducing the density of zinc powder wrappage, avoiding the settlement of zinc powder, increasing the compatibility of zinc powder and coating, and leading the zinc powder to be evenly dispersed in the coating, thereby improving the anti-corrosion effect of the coating.
Comparative examples 26-31 changed the application method of the coating and the ratio of the component A to the component B, and the results also decreased the four performance indexes, which indicates that after the component A and the component B were independently formulated and stored, the coating needs to be applied by the specific method and ratio of the present invention to ensure better corrosion protection.
Second, coating strength and adhesive force performance test of inorganic anticorrosive paint
The inorganic anticorrosive coatings prepared in examples 1 to 4 and comparative examples 15 to 25 were subjected to coating strength and adhesion property tests, and the results are shown in table 2.
As can be seen from the results in Table 2, the inorganic anticorrosive coatings prepared in examples 2 to 4 of the present invention are excellent in adhesion and coating strength. In example 1, the adhesion and coating strength of the metal fiber after the pretreatment are not accidentally added are significantly reduced, which indicates that the addition of the metal fiber after the pretreatment is helpful for improving the adhesion and coating strength of the coating.
Comparative examples 15 to 25 change the material of the metal fiber and the pretreatment method, resulting in a reduction in the adhesion and the coating strength to different degrees, which means that the adhesion and the coating strength of the coating can be effectively improved only by applying the material of the metal fiber and the pretreatment method thereof according to the present invention.
The invention has the beneficial effects that: the inorganic anticorrosive coating provided by the invention can obviously improve the anticorrosive performance of the coating, has good adhesive force and high coating strength, and particularly, the coating is a pure inorganic component, and the raw materials are directly obtained from the nature, are rich in sources and are environment-friendly.
Finally, it should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and not intended to limit the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and equivalents can be made in the technical solutions described in the foregoing embodiments, or some technical features thereof can be replaced. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An inorganic anticorrosive paint is characterized in that: the composite material comprises a component A and a component B, wherein the component A comprises 20-30 parts of soluble phosphate, 5-8 parts of rare earth ultrafine powder, 10-20 parts of nano metal oxide powder, 40-70 parts of deionized water and 2-3 parts of fumed silica, and the preparation raw materials of the component B comprise flaky ultrafine zinc powder, zinc sulfate powder and water.
2. The inorganic anticorrosive paint according to claim 1, characterized in that: the mass ratio of the component A to the component B is 1: (0.3-0.5), wherein the mass ratio of the flaky superfine zinc powder to the zinc sulfate powder to the water is 1: (0.2-0.3): (0.8-1.2).
3. The inorganic anticorrosive paint according to claim 1, characterized in that: the soluble phosphate is aluminum dihydrogen phosphate or aluminum dihydrogen tripolyphosphate, the nano metal oxide powder comprises 0-5 parts of nano aluminum oxide, 0-10 parts of nano magnesium oxide and 0-5 parts of nano silicon oxide, the median particle size of the flaky superfine zinc powder is 10-15 mu m, and the thickness of the flaky superfine zinc powder is 0.1-0.2 mu m.
4. The method for preparing the inorganic anticorrosive paint according to claim 1, characterized in that: the method comprises the following steps:
preparation of component A: dissolving soluble phosphate in deionized water to obtain a solution, then uniformly mixing rare earth ultrafine powder, nano metal oxide powder and fumed silica to obtain mixed powder, uniformly mixing the mixed powder and the solution, and placing the mixed powder and the solution in a 1200-1800 r/min ultramicro dispersion machine for dispersion for 20-40min to obtain a dispersion liquid of a component A;
preparation of the component B: dissolving zinc sulfate powder in deionized water to prepare zinc sulfate solution, then loading the flaky superfine zinc powder and the zinc sulfate solution into two storage tanks, spraying the flaky superfine zinc powder and the zinc sulfate solution into a jet mill at 98-102 ℃ under the action of a nozzle at 0.25-0.3MPa, stopping heating after spraying, continuously cooling to- (2-4) DEG C in the jet mill for crystallization, taking out the crystallized material, centrifugally dewatering, and drying to obtain the component B.
5. The inorganic anticorrosive paint according to claim 1, characterized in that: the component A also comprises 3-6 parts of metal fibers.
6. The inorganic anticorrosive paint according to claim 5, characterized in that: the diameter of the metal fiber is 0.5-0.8 μm, and the work function of the metal fiber is smaller than that of the metal substrate to which the coating is applied.
7. The method for preparing the inorganic anticorrosive paint according to claim 6, characterized in that: the method comprises the following steps:
preparation of component A: firstly, 7/8 soluble phosphate is dissolved in deionized water to obtain solution, then metal fiber is pretreated and then is uniformly mixed with rare earth ultrafine powder, nano metal oxide powder and fumed silica to obtain mixed powder, then the mixed powder and the solution are uniformly mixed and are placed in an ultrafine dispersion machine of 1200-1800 r/min for dispersion for 20-40min to obtain dispersion liquid of the component A;
preparation of the component B: dissolving zinc sulfate powder in deionized water to prepare zinc sulfate solution, then loading the flaky superfine zinc powder and the zinc sulfate solution into two storage tanks, spraying the flaky superfine zinc powder and the zinc sulfate solution into a jet mill at 98-102 ℃ under the action of a nozzle at 0.25-0.3MPa, stopping heating after spraying, continuously cooling to- (2-4) DEG C in the jet mill for crystallization, taking out the crystallized material, centrifugally dewatering, and drying to obtain the component B.
8. The method for preparing an inorganic anticorrosive paint according to claim 7, characterized in that: the pretreatment method of the metal fiber comprises the following steps:
s1, performing sand blasting treatment on the metal fibers, and performing ultrasonic cleaning for 10-15min for later use;
s2, cleaning and drying montmorillonite, and pulverizing into 0.3-0.5 μm ultrafine montmorillonite powder in an ultrafine pulverizer;
s3, mixing the metal fiber treated by the S1 with the rest 1/8 soluble phosphate and the material obtained by the S2, and then placing the mixture in an ultramicro dispersion machine of 700 and 800 r/min for dispersion for 30-60min to obtain the pretreated metal fiber.
9. The method for preparing the inorganic anticorrosive paint according to claim 8, characterized in that: the mass ratio of the metal fiber to the montmorillonite is 1: (0.2-0.4).
10. The use method of the inorganic anticorrosive paint according to any one of claims 1 to 9, characterized in that: the method comprises the following steps: the component A and the component B are uniformly mixed according to the proportion, put into a stirrer with the speed of 400 plus materials and the speed of 500r/min for stirring for 5-10min, then kept stand at normal temperature for 30-40min, and then longitudinally stirred for 5-10min at the speed of 100 plus materials and the speed of 120r/min, so that the coating can be used for construction, coated on the surface of a base material during construction, and cured at normal temperature or heated to 60-80 ℃.
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