CN118027769B - Environmentally friendly water-based paint - Google Patents
Environmentally friendly water-based paint Download PDFInfo
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- CN118027769B CN118027769B CN202410234275.5A CN202410234275A CN118027769B CN 118027769 B CN118027769 B CN 118027769B CN 202410234275 A CN202410234275 A CN 202410234275A CN 118027769 B CN118027769 B CN 118027769B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 99
- 239000003973 paint Substances 0.000 title claims abstract description 75
- 238000013016 damping Methods 0.000 claims abstract description 74
- 239000010954 inorganic particle Substances 0.000 claims abstract description 72
- 239000000839 emulsion Substances 0.000 claims abstract description 63
- 239000002131 composite material Substances 0.000 claims abstract description 53
- 239000012779 reinforcing material Substances 0.000 claims abstract description 45
- 238000003756 stirring Methods 0.000 claims abstract description 39
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000002270 dispersing agent Substances 0.000 claims abstract description 33
- 238000002156 mixing Methods 0.000 claims abstract description 33
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000010439 graphite Substances 0.000 claims abstract description 32
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 32
- 239000010455 vermiculite Substances 0.000 claims abstract description 29
- 235000019354 vermiculite Nutrition 0.000 claims abstract description 29
- 229910052902 vermiculite Inorganic materials 0.000 claims abstract description 29
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 28
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000001914 filtration Methods 0.000 claims abstract description 23
- SOGAXMICEFXMKE-UHFFFAOYSA-N Butylmethacrylate Chemical compound CCCCOC(=O)C(C)=C SOGAXMICEFXMKE-UHFFFAOYSA-N 0.000 claims abstract description 18
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000001035 drying Methods 0.000 claims abstract description 18
- HXLAEGYMDGUSBD-UHFFFAOYSA-N 3-[diethoxy(methyl)silyl]propan-1-amine Chemical compound CCO[Si](C)(OCC)CCCN HXLAEGYMDGUSBD-UHFFFAOYSA-N 0.000 claims abstract description 16
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 claims abstract description 14
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims abstract description 9
- QZPSOSOOLFHYRR-UHFFFAOYSA-N 3-hydroxypropyl prop-2-enoate Chemical compound OCCCOC(=O)C=C QZPSOSOOLFHYRR-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims abstract description 9
- VOZRXNHHFUQHIL-UHFFFAOYSA-N glycidyl methacrylate Chemical compound CC(=C)C(=O)OCC1CO1 VOZRXNHHFUQHIL-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 claims abstract description 9
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 claims abstract description 9
- CUVLMZNMSPJDON-UHFFFAOYSA-N 1-(1-butoxypropan-2-yloxy)propan-2-ol Chemical compound CCCCOCC(C)OCC(C)O CUVLMZNMSPJDON-UHFFFAOYSA-N 0.000 claims description 14
- 239000013530 defoamer Substances 0.000 claims description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 13
- 239000002994 raw material Substances 0.000 claims description 12
- 239000010459 dolomite Substances 0.000 claims description 11
- 229910000514 dolomite Inorganic materials 0.000 claims description 11
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 8
- 239000012299 nitrogen atmosphere Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 239000007864 aqueous solution Substances 0.000 claims description 5
- 230000002787 reinforcement Effects 0.000 claims description 5
- LEEANUDEDHYDTG-UHFFFAOYSA-N 1,2-dimethoxypropane Chemical compound COCC(C)OC LEEANUDEDHYDTG-UHFFFAOYSA-N 0.000 claims description 2
- CUDYYMUUJHLCGZ-UHFFFAOYSA-N 2-(2-methoxypropoxy)propan-1-ol Chemical compound COC(C)COC(C)CO CUDYYMUUJHLCGZ-UHFFFAOYSA-N 0.000 claims description 2
- RNFAKTRFMQEEQE-UHFFFAOYSA-N Tripropylene glycol butyl ether Chemical compound CCCCOC(CC)OC(C)COC(O)CC RNFAKTRFMQEEQE-UHFFFAOYSA-N 0.000 claims description 2
- -1 lauryl alcohol ester Chemical class 0.000 claims description 2
- 239000005909 Kieselgur Substances 0.000 claims 1
- 239000012752 auxiliary agent Substances 0.000 abstract description 17
- 239000002518 antifoaming agent Substances 0.000 abstract description 15
- 230000009467 reduction Effects 0.000 abstract description 15
- 238000002360 preparation method Methods 0.000 abstract description 13
- 238000009413 insulation Methods 0.000 abstract description 9
- 238000009210 therapy by ultrasound Methods 0.000 abstract description 7
- IDGUHHHQCWSQLU-UHFFFAOYSA-N ethanol;hydrate Chemical compound O.CCO IDGUHHHQCWSQLU-UHFFFAOYSA-N 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 238000009776 industrial production Methods 0.000 abstract description 2
- 238000012545 processing Methods 0.000 abstract description 2
- 239000002245 particle Substances 0.000 description 24
- 230000000694 effects Effects 0.000 description 16
- 239000004005 microsphere Substances 0.000 description 14
- 238000000576 coating method Methods 0.000 description 12
- 239000000243 solution Substances 0.000 description 12
- 239000011248 coating agent Substances 0.000 description 11
- 238000012360 testing method Methods 0.000 description 7
- 238000005260 corrosion Methods 0.000 description 5
- 239000003999 initiator Substances 0.000 description 5
- 238000009835 boiling Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 229920000058 polyacrylate Polymers 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 230000002195 synergetic effect Effects 0.000 description 4
- 229920001169 thermoplastic Polymers 0.000 description 4
- 239000004416 thermosoftening plastic Substances 0.000 description 4
- 239000003981 vehicle Substances 0.000 description 4
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000003063 flame retardant Substances 0.000 description 3
- 239000011229 interlayer Substances 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 229920000178 Acrylic resin Polymers 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical group [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 125000003277 amino group Chemical group 0.000 description 2
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 239000004088 foaming agent Substances 0.000 description 2
- 239000012767 functional filler Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000000413 hydrolysate Substances 0.000 description 2
- 239000011256 inorganic filler Substances 0.000 description 2
- 229910003475 inorganic filler Inorganic materials 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000010445 mica Substances 0.000 description 2
- 229910052618 mica group Inorganic materials 0.000 description 2
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 229920001909 styrene-acrylic polymer Polymers 0.000 description 2
- 239000002562 thickening agent Substances 0.000 description 2
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical group N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000011258 core-shell material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- LQZZUXJYWNFBMV-UHFFFAOYSA-N ethyl butylhexanol Natural products CCCCCCCCCCCCO LQZZUXJYWNFBMV-UHFFFAOYSA-N 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005339 levitation Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 230000003335 steric effect Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
- 239000012855 volatile organic compound Substances 0.000 description 1
Classifications
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- 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
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
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- 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
-
- 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
-
- 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
- C09D5/18—Fireproof paints including high temperature resistant paints
-
- 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
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- 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
- C09D7/65—Additives macromolecular
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- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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)
Abstract
The invention discloses an environment-friendly water-based paint, and belongs to the technical field of paint processing. The environment-friendly water-based paint consists of acrylic emulsion, fluorocarbon emulsion, expanded graphite, expanded vermiculite, composite damping reinforcing material, film forming auxiliary agent, dispersing agent, defoaming agent, leveling agent and water. The preparation method of the composite damping reinforcing material comprises the following steps: mixing 3-aminopropyl methyl diethoxy silane with ethanol water solution, adding inorganic particles, stirring, drying, adding the obtained pretreated inorganic particles into cyclohexane, performing ultrasonic treatment, and filtering to obtain modified inorganic particles; adding n-butyl methacrylate, hydroxypropyl acrylate, glycidyl methacrylate, acrylic acid and sodium polyacrylate into water, then dropwise adding ammonium persulfate, then adding modified inorganic particles for mixing reaction, and drying to obtain the modified inorganic particle modified acrylic acid. The water-based paint disclosed by the invention has the advantages of stable performance, environment friendliness, excellent sound insulation and noise reduction performance, and simple and convenient preparation method, and is suitable for industrial production.
Description
Technical Field
The invention belongs to the technical field of paint processing, and particularly relates to an environment-friendly water-based paint.
Background
In the field of modern traffic, the adoption of advanced sound insulation and noise reduction technology has become an important research direction in order to improve the running efficiency of trains and provide passengers with more comfortable riding experience. The damping paint becomes an important choice for spraying the car body interlayer, and the application of the damping paint to the magnetic levitation train and the motor train unit can realize a more silent train running environment. The water-based damping paint adopts a water-based formula, so that the use of an organic solvent is effectively reduced, the emission of volatile organic compounds is reduced, the water-based damping paint has the characteristic of environmental protection, does not contain harmful volatile substances, and accords with the pursuit of modern society on environmental protection products. In high-speed railway traffic, reducing driving noise is important to guaranteeing the trip peace of passengers. Through spraying the water-based damping paint on the car body interlayer, the transmission of external noise can be effectively isolated, the comfort of riding environment is improved, the overall running efficiency of the train is improved, and the influence of urban traffic noise on the surrounding environment is slowed down. In a word, the water-based damping paint plays an important role in spraying a car body interlayer of high-speed railway vehicles such as a maglev train, a motor train unit and the like, contributes to sustainable development of urban traffic and progress of modern railway traffic, and has the advantages of environmental protection, sound insulation, noise reduction and the like, so that the water-based damping paint becomes one of the indispensable technologies in the future railway traffic field.
Chinese patent CN102408792B discloses a water-based damping paint for vehicles, which comprises an emulsion base material, an inorganic filler, a film forming additive, a thickening agent, a heating expansion type organic hollow filling material, an organic foaming agent and water, wherein the emulsion base material is formed by compounding styrene-acrylic emulsion 1, styrene-acrylic emulsion 3 and epoxy resin emulsion, the inorganic filler is calcium carbonate and mica, the heating expansion type organic hollow filling material is polyacrylonitrile fiber, and the organic foaming agent is azodiisobutyronitrile; the damping coating has a micropore structure, can be coated into a film once, is used for coating vibration parts of various vehicles, motor products and the like, and can inhibit vibration and reduce noise. Chinese patent CN106566334B discloses a damping paint for high-speed railway vehicles and a preparation method thereof, the paint comprises the following raw materials: waterproof emulsion, antirust emulsion, plasticizing acrylic emulsion, pure acrylic emulsion, preservative, defoamer, thickener, composite flame retardant and functional reinforcing material, the composite flame retardant consists of antimony trioxide and aluminum hydroxide, and the functional reinforcing material is one or more selected from floating beads, mica powder, silica powder, anti-corrosion reinforcing material and black paste; the coating has good flame retardant effect and noise reduction effect, and can reduce corrosion of a substrate and a coating film caused by bad mediums. Based on the above, the invention aims to develop the environment-friendly water-based paint with stable noise reduction and sound insulation effects, and the environment-friendly water-based paint is strong in tolerance, not easy to pulverize and not easy to be influenced by climate and temperature.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the environment-friendly water-based paint, and the special composite damping reinforcing material is added to be synergistic with the expanded graphite and the expanded vermiculite, so that the damping performance of the water-based paint is obviously improved, and the water-based paint has stable noise reduction and sound insulation effects, and is wear-resistant and durable. The invention also provides a preparation method of the environment-friendly water-based paint, which is simple and convenient and is suitable for industrial production.
The technical scheme adopted by the invention is as follows:
An environment-friendly water-based paint comprises the following raw materials:
acrylic emulsion, fluorocarbon emulsion, expanded graphite, expanded vermiculite, composite damping reinforcing material, film forming auxiliary agent, dispersing agent, defoaming agent, leveling agent and water.
Preferably, the environment-friendly water-based paint comprises the following raw materials in parts by weight:
20-60 parts of acrylic emulsion, 10-50 parts of fluorocarbon emulsion, 1-15 parts of expanded graphite, 1-15 parts of expanded vermiculite, 2-10 parts of composite damping reinforcing material, 0.5-5 parts of film forming auxiliary agent, 0.5-5 parts of dispersing agent, 0.5-5 parts of defoaming agent, 0.5-5 parts of leveling agent and 5-30 parts of water.
Preferably, the environment-friendly water-based paint comprises the following raw materials in parts by weight:
40-50 parts of acrylic emulsion, 20-30 parts of fluorocarbon emulsion, 5-10 parts of expanded graphite, 5-10 parts of expanded vermiculite, 5-8 parts of composite damping reinforcing material, 1-3 parts of film forming auxiliary agent, 1-3 parts of dispersing agent, 1-2 parts of defoaming agent, 1-2 parts of leveling agent and 10-20 parts of water.
Preferably, the acrylic emulsion is an aqueous acrylic emulsion; the fluorocarbon emulsion is an aqueous elastic fluorocarbon emulsion. According to the invention, the specific aqueous elastic fluorocarbon emulsion is added into the paint formula to be matched with the aqueous acrylic emulsion as the basic emulsion, so that the extensibility, durability and weather resistance of the aqueous paint can be effectively improved, and the comprehensive performance of the aqueous paint can be improved.
The invention adopts the expanded graphite and the expanded vermiculite as porous functional filler, has the sound absorption function, and can improve the noise reduction effect of the coating through sound absorption when sound passes through. The space steric effect of the expanded graphite can not only enhance the damping performance of the coating, but also fully exert the high temperature resistance and corrosion resistance of the graphite to improve the coating due to the increase of the spacing between graphite sheets. The expanded vermiculite has a porous layered structure, can effectively absorb sound waves in the environment, is converted into micro-vibration and heat energy, has the porosity and the layered structure which are beneficial to generating a steric hindrance effect, can further slow down the propagation of the sound waves, reduce the sound wave energy, realize the noise reduction effect, has good fireproof and insulating properties, and can improve the flame retardance and the stability of the paint.
Preferably, the composite damping reinforcing material is prepared by the following method:
D1, mixing 3-aminopropyl methyl diethoxy silane with an ethanol water solution, stirring at 35-40 ℃ to obtain a treatment solution, adding inorganic particles, stirring at 50-60 ℃, filtering, drying at 60-80 ℃ to obtain pretreated inorganic particles, adding the pretreated inorganic particles into cyclohexane at room temperature, carrying out ultrasonic treatment, and filtering to obtain modified inorganic particles;
and D2, adding n-butyl methacrylate, hydroxypropyl acrylate, glycidyl methacrylate, acrylic acid and sodium polyacrylate into water at 65-70 ℃ under nitrogen atmosphere, uniformly mixing, then dropwise adding ammonium persulfate, adding the modified inorganic particles obtained in the step D1, uniformly mixing, reacting, filtering, and drying at 90-100 ℃ to obtain the composite damping reinforcing material.
Preferably, the composite damping reinforcing material is prepared by the following method:
D1, mixing 3-6 parts by weight of 3-aminopropyl methyl diethoxy silane and 200-400 parts by weight of 70-90wt% ethanol water solution, stirring for 10-30min at 35-40 ℃ and 400-500rpm to obtain a treatment solution, then adding 12-20 parts by weight of inorganic particles, stirring for 90-120min at 50-60 ℃ and 400-500rpm, filtering, drying for 10-15h at 60-80 ℃ to obtain pretreated inorganic particles, adding the pretreated inorganic particles into cyclohexane according to a solid-to-liquid ratio of 1g:7-10mL for ultrasonic treatment for 10-30min at room temperature, and filtering to obtain modified inorganic particles;
And D2, adding 20-30 parts by weight of n-butyl methacrylate, 3-7 parts by weight of hydroxypropyl acrylate, 1-3 parts by weight of glycidyl methacrylate, 5-10 parts by weight of acrylic acid and 1-5 parts by weight of sodium polyacrylate into 100-300 parts by weight of water at 65-70 ℃ under nitrogen atmosphere, uniformly mixing, then dropwise adding 0.2-0.8 part by weight of ammonium persulfate, adding the modified inorganic particles obtained in the step D1, uniformly mixing, reacting for 1-3h, filtering, and drying at 90-100 ℃ for 3-8h to obtain the composite damping reinforcing material.
Preferably, the ultrasonic power in the step D1 is 50-100W, and the ultrasonic frequency is 20-40kHz.
Preferably, the inorganic particles in the step D1 are a mixture of diatomite and dolomite according to a weight ratio of 1-2:1.
Furthermore, the invention also adds specific composite damping reinforcing material to cooperate with the expanded graphite and the expanded vermiculite, thereby obviously improving the damping performance of the water-based paint and ensuring that the water-based paint has stable noise reduction and sound insulation effects. The composite damping reinforcing material is a porous microsphere with a core-shell structure, the shell of the microsphere is a thermoplastic acrylic polymer, the inner core of the microsphere is inorganic particles with the surfaces impregnated with low-boiling-point cyclohexane (with the boiling point of about 80 ℃), when the microsphere is dried at the temperature of more than 90 ℃, the low-boiling-point cyclohexane is gasified, the thermoplastic shell can expand, the inorganic particles are unchanged, the inorganic particles exist in the expanded microsphere shell as cores, after the preparation is finished, the low-boiling-point cyclohexane is liquefied along with the reduction of the temperature, but the expanded microsphere shell cannot recover the initial volume, so that a hollow pore structure is formed in the microsphere, when the microsphere is subjected to external periodic vibration, the damping effect similar to a tuned mass damping system is formed due to the mass inertia and intermolecular friction effect of the internal high-density inorganic particles, more kinetic energy is consumed, and therefore, the damping performance and the service life of the coating are improved.
The invention preferably uses the mixture of diatomite and dolomite as inorganic particles, and utilizes the respective advantages of the diatomite and the dolomite in terms of physical and chemical properties to generate a synergistic effect, so that the composite damping reinforcing material has more excellent damping performance and the like. In addition, the inorganic particles are modified firstly, the hydrolysate of the treatment liquid 3-aminopropyl methyl diethoxy silane is combined to the surfaces of the inorganic particles through electrostatic and hydrogen bonding, so that on one hand, the wettability and the dispersibility of the inorganic particles in a reaction system are improved, and on the other hand, amino groups contained on the surfaces of the modified inorganic particles can assist the curing of acrylic resin, so that the acrylic polymer can effectively coat the inorganic particles.
Preferably, the film forming additive is at least one of dipropylene glycol methyl ether, dipropylene glycol butyl ether, tripropylene glycol butyl ether, propylene glycol dimethyl ether and dodecanol ester.
Preferably, the dispersing agent is any one of BYK-190 dispersing agent, BYK-182 dispersing agent and BYK-2010 dispersing agent.
Preferably, the defoaming agent is any one of BYK-012 defoaming agent, BYK-016 defoaming agent and BYK-092 defoaming agent.
Preferably, the leveling agent is any one of TEGO-500 leveling agent, TEGO-450 leveling agent and TEGO-270 leveling agent.
Preferably, the particle size of the expanded graphite is 10-100 mu m, and the particle size of the expanded vermiculite is 10-100 mu m.
The invention also provides a preparation method of the environment-friendly water-based paint, which comprises the following steps:
mixing the acrylic emulsion, the fluorocarbon emulsion and water, stirring for 10-20min at 500-1000rpm, then adding the expanded graphite, the expanded vermiculite and the composite damping reinforcing material, continuously stirring for 30-50min, and then adding the film forming auxiliary agent, the dispersing agent, the defoaming agent and the leveling agent, and stirring for 20-40min to obtain the environment-friendly water-based paint.
The invention has the beneficial effects that:
1. The environment-friendly water-based paint prepared by the invention adopts the specific water-based elastic fluorocarbon emulsion to be matched with the water-based acrylic emulsion as the basic emulsion, can effectively improve the extensibility, durability and weather resistance of the water-based paint, and is beneficial to improving the comprehensive performance of the water-based paint.
2. The invention adopts the expanded graphite and the expanded vermiculite as the porous functional filler, wherein the expanded graphite can not only enhance the damping performance of the coating, but also fully exert the high temperature resistance and corrosion resistance of the coating due to the increase of the spacing between graphite layers. The expanded vermiculite has a porous layered structure, can effectively absorb sound waves in the environment, has the advantages that the porous and layered structure is favorable for generating a steric hindrance effect, can further slow down the propagation of the sound waves, reduces the sound wave energy, realizes the noise reduction effect, has good fireproof and insulating properties, and can improve the flame retardance and the stability of the paint.
3. According to the invention, the specific composite damping reinforcing material is added to cooperate with the expanded graphite and the expanded vermiculite, so that the damping performance of the water-based paint is further improved, and the water-based paint has stable noise reduction and sound insulation effects.
Detailed Description
The following description of the embodiments of the present invention will clearly and fully describe the technical solutions of the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Acrylic emulsion, which is water-based acrylic emulsion of Shanghai Wen Hua chemical pigment Co., ltd., model: RW-116, solids content 40%.
The fluorocarbon emulsion is water-based elastic fluorocarbon emulsion of Beijing Runbo Hengtong technology Co., ltd., model: HT-116EF, solids content 50%.
Example 1
An environment-friendly water-based paint is prepared from the following raw materials in parts by weight:
45 parts by weight of acrylic emulsion, 25 parts by weight of fluorocarbon emulsion, 9 parts by weight of expanded graphite (particle size 100 μm), 6 parts by weight of expanded vermiculite (particle size 50 μm), 6.5 parts by weight of composite damping reinforcing material, 2.5 parts by weight of film forming auxiliary agent dipropylene glycol butyl ether, 2 parts by weight of BYK-190 dispersing agent, 1.2 parts by weight of BYK-012 defoamer, 1.2 parts by weight of TEGO-450 flatting agent and 15 parts by weight of water.
The composite damping reinforcing material is prepared by the following method:
D1 mixing 4.5 parts by weight of 3-aminopropyl methyl diethoxysilane (CAS: 3179-76-8) and 300 parts by weight of an aqueous solution of 80wt% ethanol, stirring at 37 ℃ and 450rpm for 20min to obtain a treatment solution, then adding 16 parts by weight of inorganic particles, stirring at 56 ℃ and 450rpm for 100min, filtering, drying at 70 ℃ for 12h to obtain pretreated inorganic particles, adding the pretreated inorganic particles into cyclohexane according to a solid-to-liquid ratio of 1g:8mL for ultrasonic treatment for 20min at room temperature, and filtering to obtain modified inorganic particles; the inorganic particles are a mixture of diatomite (with the particle size of 40 mu m) and dolomite (with the particle size of 50 mu m) according to the weight ratio of 1.5:1; wherein, the ultrasonic power is 60W, and the ultrasonic frequency is 30kHz;
And D2, adding 25 parts by weight of n-butyl methacrylate, 5 parts by weight of hydroxypropyl acrylate, 2 parts by weight of glycidyl methacrylate, 8 parts by weight of acrylic acid and 3 parts by weight of dispersant sodium polyacrylate into 200 parts by weight of water at 70 ℃ under nitrogen atmosphere, uniformly mixing, then dropwise adding 0.5 part by weight of initiator ammonium persulfate, adding the modified inorganic particles obtained in the step D1, uniformly mixing, reacting for 2.5 hours, filtering, and drying at 95 ℃ for 6 hours to obtain the composite damping reinforcing material.
The preparation method of the environment-friendly water-based paint comprises the following steps:
Mixing the acrylic emulsion, the fluorocarbon emulsion and water, stirring at room temperature and 700rpm for 15min, then adding the expanded graphite, the expanded vermiculite and the composite damping reinforcing material, continuously stirring for 45min, and then adding the film forming auxiliary agent dipropylene glycol butyl ether, the BYK-190 dispersing agent, the BYK-012 defoaming agent and the TEGO-450 leveling agent, and stirring for 30min to obtain the environment-friendly water-based paint.
Example 2
An environment-friendly water-based paint is prepared from the following raw materials in parts by weight:
45 parts by weight of acrylic emulsion, 25 parts by weight of fluorocarbon emulsion, 9 parts by weight of expanded graphite (particle size 100 μm), 6 parts by weight of expanded vermiculite (particle size 50 μm), 6.5 parts by weight of composite damping reinforcing material, 2.5 parts by weight of film forming auxiliary agent dipropylene glycol butyl ether, 2 parts by weight of BYK-190 dispersing agent, 1.2 parts by weight of BYK-012 defoamer, 1.2 parts by weight of TEGO-450 flatting agent and 15 parts by weight of water.
The composite damping reinforcing material is prepared by the following method:
Taking 16 parts by weight of inorganic particles, adding the inorganic particles into cyclohexane according to a solid-to-liquid ratio of 1g to 8mL at room temperature, carrying out ultrasonic treatment for 20min, and filtering to obtain modified inorganic particles; the inorganic particles are a mixture of diatomite (with the particle size of 40 mu m) and dolomite (with the particle size of 50 mu m) according to the weight ratio of 1.5:1; wherein, the ultrasonic power is 60W, and the ultrasonic frequency is 30kHz;
And D2, adding 25 parts by weight of n-butyl methacrylate, 5 parts by weight of hydroxypropyl acrylate, 2 parts by weight of glycidyl methacrylate, 8 parts by weight of acrylic acid and 3 parts by weight of dispersant sodium polyacrylate into 200 parts by weight of water at 70 ℃ under nitrogen atmosphere, uniformly mixing, then dropwise adding 0.5 part by weight of initiator ammonium persulfate, adding the modified inorganic particles obtained in the step D1, uniformly mixing, reacting for 2.5 hours, filtering, and drying at 95 ℃ for 6 hours to obtain the composite damping reinforcing material.
The preparation method of the environment-friendly water-based paint comprises the following steps:
Mixing the acrylic emulsion, the fluorocarbon emulsion and water, stirring at room temperature and 700rpm for 15min, then adding the expanded graphite, the expanded vermiculite and the composite damping reinforcing material, continuously stirring for 45min, and then adding the film forming auxiliary agent dipropylene glycol butyl ether, the BYK-190 dispersing agent, the BYK-012 defoaming agent and the TEGO-450 leveling agent, and stirring for 30min to obtain the environment-friendly water-based paint.
Example 3
An environment-friendly water-based paint is prepared from the following raw materials in parts by weight:
45 parts by weight of acrylic emulsion, 25 parts by weight of fluorocarbon emulsion, 9 parts by weight of expanded graphite (particle size 100 μm), 6 parts by weight of expanded vermiculite (particle size 50 μm), 6.5 parts by weight of composite damping reinforcing material, 2.5 parts by weight of film forming auxiliary agent dipropylene glycol butyl ether, 2 parts by weight of BYK-190 dispersing agent, 1.2 parts by weight of BYK-012 defoamer, 1.2 parts by weight of TEGO-450 flatting agent and 15 parts by weight of water.
The composite damping reinforcing material is prepared by the following method:
d1 mixing 4.5 parts by weight of 3-aminopropyl methyl diethoxysilane (CAS: 3179-76-8) and 300 parts by weight of an aqueous solution of 80wt% ethanol, stirring at 37 ℃ and 450rpm for 20min to obtain a treatment solution, then adding 16 parts by weight of inorganic particles, stirring at 56 ℃ and 450rpm for 100min, filtering, drying at 70 ℃ for 12h to obtain pretreated inorganic particles, adding the pretreated inorganic particles into n-hexane according to a solid-to-liquid ratio of 1g:8mL for ultrasound for 20min at room temperature, and filtering to obtain modified inorganic particles; the inorganic particles are a mixture of diatomite (with the particle size of 40 mu m) and dolomite (with the particle size of 50 mu m) according to the weight ratio of 1.5:1; wherein, the ultrasonic power is 60W, and the ultrasonic frequency is 30kHz;
And D2, adding 25 parts by weight of n-butyl methacrylate, 5 parts by weight of hydroxypropyl acrylate, 2 parts by weight of glycidyl methacrylate, 8 parts by weight of acrylic acid and 3 parts by weight of dispersant sodium polyacrylate into 200 parts by weight of water at 70 ℃ under nitrogen atmosphere, uniformly mixing, then dropwise adding 0.5 part by weight of initiator ammonium persulfate, adding the modified inorganic particles obtained in the step D1, uniformly mixing, reacting for 2.5 hours, filtering, and drying at 95 ℃ for 6 hours to obtain the composite damping reinforcing material.
The preparation method of the environment-friendly water-based paint comprises the following steps:
Mixing the acrylic emulsion, the fluorocarbon emulsion and water, stirring at room temperature and 700rpm for 15min, then adding the expanded graphite, the expanded vermiculite and the composite damping reinforcing material, continuously stirring for 45min, and then adding the film forming auxiliary agent dipropylene glycol butyl ether, the BYK-190 dispersing agent, the BYK-012 defoaming agent and the TEGO-450 leveling agent, and stirring for 30min to obtain the environment-friendly water-based paint.
Example 4
An environment-friendly water-based paint is prepared from the following raw materials in parts by weight:
45 parts by weight of acrylic emulsion, 25 parts by weight of fluorocarbon emulsion, 9 parts by weight of expanded graphite (particle size 100 μm), 6 parts by weight of expanded vermiculite (particle size 50 μm), 6.5 parts by weight of composite damping reinforcing material, 2.5 parts by weight of film forming auxiliary agent dipropylene glycol butyl ether, 2 parts by weight of BYK-190 dispersing agent, 1.2 parts by weight of BYK-012 defoamer, 1.2 parts by weight of TEGO-450 flatting agent and 15 parts by weight of water.
The composite damping reinforcing material is prepared by the following method:
D1 mixing 4.5 parts by weight of 3-aminopropyl methyl diethoxysilane (CAS: 3179-76-8) and 300 parts by weight of an aqueous solution of 80wt% ethanol, stirring at 37 ℃ and 450rpm for 20min to obtain a treatment solution, then adding 16 parts by weight of inorganic particles, stirring at 56 ℃ and 450rpm for 100min, filtering, drying at 70 ℃ for 12h to obtain pretreated inorganic particles, adding the pretreated inorganic particles into cyclohexane according to a solid-to-liquid ratio of 1g:8mL for ultrasonic treatment for 20min at room temperature, and filtering to obtain modified inorganic particles; the inorganic particles are diatomite (particle size 40 μm); wherein, the ultrasonic power is 60W, and the ultrasonic frequency is 30kHz;
And D2, adding 25 parts by weight of n-butyl methacrylate, 5 parts by weight of hydroxypropyl acrylate, 2 parts by weight of glycidyl methacrylate, 8 parts by weight of acrylic acid and 3 parts by weight of dispersant sodium polyacrylate into 200 parts by weight of water at 70 ℃ under nitrogen atmosphere, uniformly mixing, then dropwise adding 0.5 part by weight of initiator ammonium persulfate, adding the modified inorganic particles obtained in the step D1, uniformly mixing, reacting for 2.5 hours, filtering, and drying at 95 ℃ for 6 hours to obtain the composite damping reinforcing material.
The preparation method of the environment-friendly water-based paint comprises the following steps:
Mixing the acrylic emulsion, the fluorocarbon emulsion and water, stirring at room temperature and 700rpm for 15min, then adding the expanded graphite, the expanded vermiculite and the composite damping reinforcing material, continuously stirring for 45min, and then adding the film forming auxiliary agent dipropylene glycol butyl ether, the BYK-190 dispersing agent, the BYK-012 defoaming agent and the TEGO-450 leveling agent, and stirring for 30min to obtain the environment-friendly water-based paint.
Example 5
An environment-friendly water-based paint is prepared from the following raw materials in parts by weight:
45 parts by weight of acrylic emulsion, 25 parts by weight of fluorocarbon emulsion, 9 parts by weight of expanded graphite (particle size 100 μm), 6 parts by weight of expanded vermiculite (particle size 50 μm), 6.5 parts by weight of composite damping reinforcing material, 2.5 parts by weight of film forming auxiliary agent dipropylene glycol butyl ether, 2 parts by weight of BYK-190 dispersing agent, 1.2 parts by weight of BYK-012 defoamer, 1.2 parts by weight of TEGO-450 flatting agent and 15 parts by weight of water.
The composite damping reinforcing material is prepared by the following method:
D1 mixing 4.5 parts by weight of 3-aminopropyl methyl diethoxysilane (CAS: 3179-76-8) and 300 parts by weight of an aqueous solution of 80wt% ethanol, stirring at 37 ℃ and 450rpm for 20min to obtain a treatment solution, then adding 16 parts by weight of inorganic particles, stirring at 56 ℃ and 450rpm for 100min, filtering, drying at 70 ℃ for 12h to obtain pretreated inorganic particles, adding the pretreated inorganic particles into cyclohexane according to a solid-to-liquid ratio of 1g:8mL for ultrasonic treatment for 20min at room temperature, and filtering to obtain modified inorganic particles; the inorganic particles are dolomite (particle size 50 μm); wherein, the ultrasonic power is 60W, and the ultrasonic frequency is 30kHz;
And D2, adding 25 parts by weight of n-butyl methacrylate, 5 parts by weight of hydroxypropyl acrylate, 2 parts by weight of glycidyl methacrylate, 8 parts by weight of acrylic acid and 3 parts by weight of dispersant sodium polyacrylate into 200 parts by weight of water at 70 ℃ under nitrogen atmosphere, uniformly mixing, then dropwise adding 0.5 part by weight of initiator ammonium persulfate, adding the modified inorganic particles obtained in the step D1, uniformly mixing, reacting for 2.5 hours, filtering, and drying at 95 ℃ for 6 hours to obtain the composite damping reinforcing material.
The preparation method of the environment-friendly water-based paint comprises the following steps:
Mixing the acrylic emulsion, the fluorocarbon emulsion and water, stirring at room temperature and 700rpm for 15min, then adding the expanded graphite, the expanded vermiculite and the composite damping reinforcing material, continuously stirring for 45min, and then adding the film forming auxiliary agent dipropylene glycol butyl ether, the BYK-190 dispersing agent, the BYK-012 defoaming agent and the TEGO-450 leveling agent, and stirring for 30min to obtain the environment-friendly water-based paint.
Example 6
An environment-friendly water-based paint is prepared from the following raw materials in parts by weight:
45 parts by weight of acrylic emulsion, 25 parts by weight of fluorocarbon emulsion, 9 parts by weight of expanded graphite (particle size 100 μm), 6 parts by weight of expanded vermiculite (particle size 50 μm), 6.5 parts by weight of composite damping reinforcing material, 2.5 parts by weight of film forming auxiliary agent dipropylene glycol butyl ether, 2 parts by weight of BYK-190 dispersing agent, 1.2 parts by weight of BYK-012 defoamer, 1.2 parts by weight of TEGO-450 flatting agent and 15 parts by weight of water.
The composite damping reinforcing material is prepared by the following method:
Mixing 4.5 parts by weight of 3-aminopropyl methyl diethoxysilane (CAS: 3179-76-8) and 300 parts by weight of 80wt% ethanol water solution, stirring at 37 ℃ and 450rpm for 20min to obtain a treatment solution, adding 16 parts by weight of inorganic particles, stirring at 56 ℃ and 450rpm for 100min, filtering, and drying at 70 ℃ for 12h to obtain the composite damping reinforcing material; the inorganic particles are a mixture of diatomite (with the particle size of 40 mu m) and dolomite (with the particle size of 50 mu m) according to the weight ratio of 1.5:1.
The preparation method of the environment-friendly water-based paint comprises the following steps:
Mixing the acrylic emulsion, the fluorocarbon emulsion and water, stirring at room temperature and 700rpm for 15min, then adding the expanded graphite, the expanded vermiculite and the composite damping reinforcing material, continuously stirring for 45min, and then adding the film forming auxiliary agent dipropylene glycol butyl ether, the BYK-190 dispersing agent, the BYK-012 defoaming agent and the TEGO-450 leveling agent, and stirring for 30min to obtain the environment-friendly water-based paint.
Test example 1
The environment-friendly water-based paint of examples 1-6 is respectively taken, a layer of the environment-friendly water-based paint is coated on a metal copper plate to obtain a dry film with the thickness of 2mm, the dry film is taken as a sample, and the composite loss factors of the sample at different temperatures are detected by referring to a standard GB/T16406-1996. The larger the composite loss factor is, the better the damping performance of the environment-friendly water-based paint is, and the better the sound insulation and noise reduction effects are. The test results are shown in Table 1.
TABLE 1 damping Properties of Environment-friendly Water-based paint
Test example 2
The test sample obtained in test example 1 was immersed in a 3.5% sodium chloride solution for two weeks, and then subjected to composite loss factor (40 ℃) detection, and the salt spray resistance of the environmental-friendly water-based paint was evaluated. The test results are shown in Table 2.
TABLE 2 salt spray resistance of Environment-friendly waterborne coatings
| Composite loss factor (40 ℃ C.) | |
| Example 1 | 0.170 |
| Example 6 | 0.082 |
From the test results, the environment-friendly water-based paint prepared by the invention obviously improves the damping performance of the water-based paint by adding the specific composite damping reinforcing material to have synergistic effect with the expanded graphite and the expanded vermiculite, so that the water-based paint has stable noise reduction and sound insulation effects. Compared to examples 2-6, example 1 has the best damping and corrosion resistance. This is because the composite damping reinforcement material used in example 1 uses a thermoplastic acrylic polymer as a microsphere shell, inorganic particles impregnated with low boiling point cyclohexane on the surface are microsphere cores, the low boiling point cyclohexane is gasified during drying, the thermoplastic shell expands, the inorganic particles are present as cores inside the expanded microsphere shell, the low boiling point cyclohexane is liquefied with the temperature reduction after the preparation is finished, but the expanded microsphere shell cannot recover the original volume, so that a hollow pore structure is formed inside the microsphere, when the microsphere is subjected to external periodic vibration, a damping effect similar to a tuned mass damping system is formed due to mass inertia and intermolecular friction of the internal high density inorganic particles, more kinetic energy is consumed, and thus the damping performance and the service life of the coating are improved. By preferably selecting the mixture of diatomite and dolomite as inorganic particles, the advantages of the diatomite and the dolomite in terms of physical and chemical properties are utilized to generate a synergistic effect, so that the composite damping reinforcing material is more excellent in damping performance and the like. In addition, the inorganic particles are modified, the hydrolysate of the treatment fluid 3-aminopropyl methyl diethoxy silane is combined to the surfaces of the inorganic particles through electrostatic and hydrogen bonding, so that on one hand, the wettability and the dispersibility of the inorganic particles in a reaction system are improved, and on the other hand, amino groups on the surfaces of the modified inorganic particles can assist the curing of acrylic resin, so that the acrylic polymer can effectively coat the inorganic particles.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
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