CN113621341A - Special high-temperature repairing agent for leaking stoppage of drying cylinder - Google Patents
Special high-temperature repairing agent for leaking stoppage of drying cylinder Download PDFInfo
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- CN113621341A CN113621341A CN202111061368.5A CN202111061368A CN113621341A CN 113621341 A CN113621341 A CN 113621341A CN 202111061368 A CN202111061368 A CN 202111061368A CN 113621341 A CN113621341 A CN 113621341A
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- China
- Prior art keywords
- temperature
- epoxy resin
- repairing agent
- filler
- carbon black
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- 238000001035 drying Methods 0.000 title claims abstract description 40
- 239000003822 epoxy resin Substances 0.000 claims abstract description 91
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 91
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 60
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 47
- 239000000945 filler Substances 0.000 claims abstract description 46
- 239000002904 solvent Substances 0.000 claims abstract description 37
- 239000006229 carbon black Substances 0.000 claims abstract description 36
- -1 polysiloxane Polymers 0.000 claims abstract description 27
- GYZLOYUZLJXAJU-UHFFFAOYSA-N diglycidyl ether Chemical compound C1OC1COCC1CO1 GYZLOYUZLJXAJU-UHFFFAOYSA-N 0.000 claims abstract description 25
- 150000004985 diamines Chemical class 0.000 claims abstract description 21
- 229920005992 thermoplastic resin Polymers 0.000 claims abstract description 21
- 239000002245 particle Substances 0.000 claims abstract description 16
- 239000012766 organic filler Substances 0.000 claims abstract description 12
- 230000007547 defect Effects 0.000 claims abstract description 8
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 4
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical group CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 30
- 238000003756 stirring Methods 0.000 claims description 29
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 21
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 20
- 235000013870 dimethyl polysiloxane Nutrition 0.000 claims description 20
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 18
- 229910052755 nonmetal Inorganic materials 0.000 claims description 17
- 239000002923 metal particle Substances 0.000 claims description 15
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 12
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 12
- 230000005661 hydrophobic surface Effects 0.000 claims description 12
- 239000000377 silicon dioxide Substances 0.000 claims description 12
- 230000002209 hydrophobic effect Effects 0.000 claims description 11
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical group C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 claims description 10
- MQJKPEGWNLWLTK-UHFFFAOYSA-N Dapsone Chemical compound C1=CC(N)=CC=C1S(=O)(=O)C1=CC=C(N)C=C1 MQJKPEGWNLWLTK-UHFFFAOYSA-N 0.000 claims description 9
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 8
- 238000002360 preparation method Methods 0.000 claims description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 7
- 239000004697 Polyetherimide Substances 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- 229920001601 polyetherimide Polymers 0.000 claims description 7
- 229920005989 resin Polymers 0.000 claims description 7
- 239000011347 resin Substances 0.000 claims description 7
- 238000010008 shearing Methods 0.000 claims description 7
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 6
- 230000032683 aging Effects 0.000 claims description 6
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 6
- ZZTCPWRAHWXWCH-UHFFFAOYSA-N diphenylmethanediamine Chemical compound C=1C=CC=CC=1C(N)(N)C1=CC=CC=C1 ZZTCPWRAHWXWCH-UHFFFAOYSA-N 0.000 claims description 6
- 239000012065 filter cake Substances 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 229920001721 polyimide Polymers 0.000 claims description 6
- 239000009719 polyimide resin Substances 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 6
- XQUPVDVFXZDTLT-UHFFFAOYSA-N 1-[4-[[4-(2,5-dioxopyrrol-1-yl)phenyl]methyl]phenyl]pyrrole-2,5-dione Chemical compound O=C1C=CC(=O)N1C(C=C1)=CC=C1CC1=CC=C(N2C(C=CC2=O)=O)C=C1 XQUPVDVFXZDTLT-UHFFFAOYSA-N 0.000 claims description 5
- HLBLWEWZXPIGSM-UHFFFAOYSA-N 4-Aminophenyl ether Chemical compound C1=CC(N)=CC=C1OC1=CC=C(N)C=C1 HLBLWEWZXPIGSM-UHFFFAOYSA-N 0.000 claims description 5
- 239000005995 Aluminium silicate Substances 0.000 claims description 5
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 claims description 5
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 claims description 5
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 claims description 5
- 235000012211 aluminium silicate Nutrition 0.000 claims description 5
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 5
- SLGWESQGEUXWJQ-UHFFFAOYSA-N formaldehyde;phenol Chemical compound O=C.OC1=CC=CC=C1 SLGWESQGEUXWJQ-UHFFFAOYSA-N 0.000 claims description 5
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 5
- 239000010445 mica Substances 0.000 claims description 5
- 229910052618 mica group Inorganic materials 0.000 claims description 5
- 239000005543 nano-size silicon particle Substances 0.000 claims description 5
- 229920001568 phenolic resin Polymers 0.000 claims description 5
- 229920003192 poly(bis maleimide) Polymers 0.000 claims description 5
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 claims description 5
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 5
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 5
- 238000004381 surface treatment Methods 0.000 claims description 5
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 4
- KVBYPTUGEKVEIJ-UHFFFAOYSA-N benzene-1,3-diol;formaldehyde Chemical compound O=C.OC1=CC=CC(O)=C1 KVBYPTUGEKVEIJ-UHFFFAOYSA-N 0.000 claims description 4
- 125000004122 cyclic group Chemical group 0.000 claims description 4
- 229920002285 poly(styrene-co-acrylonitrile) Polymers 0.000 claims description 4
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 4
- 239000008096 xylene Substances 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims description 2
- 238000000227 grinding Methods 0.000 claims description 2
- LJBWJFWNFUKAGS-UHFFFAOYSA-N 2-[bis(2-hydroxyphenyl)methyl]phenol Chemical compound OC1=CC=CC=C1C(C=1C(=CC=CC=1)O)C1=CC=CC=C1O LJBWJFWNFUKAGS-UHFFFAOYSA-N 0.000 claims 1
- 229920005862 polyol Polymers 0.000 claims 1
- 150000003077 polyols Chemical class 0.000 claims 1
- 238000007789 sealing Methods 0.000 abstract description 9
- 229920001296 polysiloxane Polymers 0.000 abstract description 8
- 230000008602 contraction Effects 0.000 abstract description 3
- 238000009472 formulation Methods 0.000 abstract 1
- 238000009413 insulation Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 230000008023 solidification Effects 0.000 abstract 1
- 238000007711 solidification Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 9
- 239000000853 adhesive Substances 0.000 description 8
- 230000001070 adhesive effect Effects 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 239000000126 substance Substances 0.000 description 8
- 239000004593 Epoxy Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000035882 stress Effects 0.000 description 6
- 125000003700 epoxy group Chemical group 0.000 description 5
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229920002545 silicone oil Polymers 0.000 description 5
- 229910001018 Cast iron Inorganic materials 0.000 description 4
- 238000004132 cross linking Methods 0.000 description 4
- 238000011049 filling Methods 0.000 description 4
- CCDXIADKBDSBJU-UHFFFAOYSA-N phenylmethanetriol Chemical compound OC(O)(O)C1=CC=CC=C1 CCDXIADKBDSBJU-UHFFFAOYSA-N 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 150000005846 sugar alcohols Polymers 0.000 description 4
- 238000010292 electrical insulation Methods 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 230000008439 repair process Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000007259 addition reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Chemical group CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000012943 hotmelt Substances 0.000 description 2
- 239000013528 metallic particle Substances 0.000 description 2
- 239000002105 nanoparticle Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 description 2
- 239000004636 vulcanized rubber Substances 0.000 description 2
- XMSXQFUHVRWGNA-UHFFFAOYSA-N Decamethylcyclopentasiloxane Chemical compound C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1 XMSXQFUHVRWGNA-UHFFFAOYSA-N 0.000 description 1
- FQYUMYWMJTYZTK-UHFFFAOYSA-N Phenyl glycidyl ether Chemical compound C1OC1COC1=CC=CC=C1 FQYUMYWMJTYZTK-UHFFFAOYSA-N 0.000 description 1
- 229910018557 Si O Inorganic materials 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 238000005411 Van der Waals force Methods 0.000 description 1
- 238000002679 ablation Methods 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 239000004841 bisphenol A epoxy resin Substances 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 125000005462 imide group Chemical group 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 230000009972 noncorrosive effect Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- CXQXSVUQTKDNFP-UHFFFAOYSA-N octamethyltrisiloxane Chemical compound C[Si](C)(C)O[Si](C)(C)O[Si](C)(C)C CXQXSVUQTKDNFP-UHFFFAOYSA-N 0.000 description 1
- 239000012074 organic phase Substances 0.000 description 1
- 238000004987 plasma desorption mass spectroscopy Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 150000008442 polyphenolic compounds Polymers 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 125000005372 silanol group Chemical group 0.000 description 1
- 150000003377 silicon compounds Chemical class 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Inorganic materials [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 229920000638 styrene acrylonitrile Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 125000001174 sulfone group Chemical group 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J183/00—Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Adhesives based on derivatives of such polymers
- C09J183/04—Polysiloxanes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to a special high-temperature repairing agent for leaking stoppage of a drying cylinder, which consists of polysiloxane, white carbon black, a filler and high-temperature epoxy resin; the filler is inorganic nonmetallic particles and/or organic filler, the high-temperature epoxy resin is glycidyl ether epoxy resin, thermoplastic resin, diamine and solvent, polysiloxane is taken into white carbon black and the filler is sheared, the high-temperature epoxy resin is added according to the following formulation principle and is uniformly stirred, then the rust remover can be adopted to treat and cool the oxide layer of the cylinder body and the cylinder cover and polish the combination part of the cylinder body and the cylinder cover, the high-temperature repairing agent is uniformly coated at the defect part, the high-temperature repairing agent is pressurized and compact after being solidified, and the high-temperature repairing agent is coated for the second time and solidified, so that the heat resistance is obviously improved, the high-adhesion property and the solidification toughness which can resist the temperature higher than 280 ℃ are achieved, the elasticity and the high-temperature sealing property are good, the electric insulation property is high, the fatigue strength is good, the high-temperature-resistant sealing and caulking can be used for plane sealing and repairing in a drying cylinder, especially for repairing in the drying cylinder, and the drying cylinder can adapt to the thermal expansion and cold contraction under different temperatures.
Description
Technical Field
The invention relates to a special high-temperature repairing agent for leakage stoppage of a drying cylinder, belonging to the technical field of high-temperature compact repairing materials of drying cylinders.
Background
The drying cylinder is made of cast iron and the two ends of the cylindrical cylinder body are provided with the drying structures of the cylinder covers, steam is introduced in the operation process, saturated steam introduced from the steam joint is condensed in the drying cylinder, condensed water is attached to the inner surface of the drying cylinder due to the centrifugal force generated by the rotation of the drying cylinder, the accumulation of water rings is avoided through siphon drainage, and the temperature of the drying cylinder is raised due to the heat released by the steam, so that a product which runs on the surface of the roller shell is dried and ironed, the finishing effect is achieved, and the drying cylinder is widely applied to the papermaking industry. The plasticity, strength limit and corrosion resistance of the cast iron material of the drying cylinder are poor and are influenced by cold and hot temperature, local uneven heating, rotating operation tensile stress and other factors, the cylinder body is easy to generate cracks, abrasion, corrosion, ablation and the like, and if the cylinder body is not repaired in time, the structural damage is aggravated, and even steam and water leakage are generated to influence production. The repair welding method has high professional requirements on operators and tools, high-temperature operation environment and welding flux in a cylinder are not beneficial to leakage repair of a drying cylinder, and the problems of leaving welding seams, holes, solid impurities and the like exist.
Disclosure of Invention
The invention aims to provide the special high-temperature repairing agent for the leakage stoppage of the drying cylinder, which obviously improves the temperature resistance, the metal adhesion and the curing toughness, has good elasticity and high-temperature sealing performance, high electrical insulation performance and good fatigue resistance, can be used for plane sealing and caulking under high-temperature working conditions, particularly repairing in the drying cylinder, and can adapt to the thermal expansion and cold contraction of the drying cylinder at different temperatures.
The invention is realized by the following technical scheme:
the special high-temperature repairing agent for dryer leakage stoppage is prepared from polysiloxane, white carbon black, filler and high-temperature epoxy resin according to the mass ratio of 35-70:5-10: 1-20: 2-25;
the special high-temperature repairing agent for the dryer leakage stoppage is characterized in that the polysiloxane is one or more of polydimethylsiloxane, hydroxyl-terminated linear polydimethylsiloxane, cyclic polydimethylsiloxane and divinyl polydimethylsiloxane; the white carbon black is hydrophobic white carbon black; the filler is inorganic non-metal particles and/or organic filler, the inorganic non-metal particles are one or more of nano silicon carbide, nano calcium carbonate, talcum powder, nano alumina, nano titanium oxide, kaolin and mica powder, the inorganic non-metal particles further comprise hydrophobic surface treatment particles, and the organic filler is one or more of styrene acrylonitrile copolymer particles, acrylonitrile-butadiene-styrene copolymer particles and polyvinyl butyral powder.
The special high-temperature repairing agent for leaking stoppage of the drying cylinder is characterized in that the high-temperature epoxy resin is glycidyl ether epoxy resin, thermoplastic resin, diamine and a solvent in a mass ratio of 50-65: 5-15: 4-8: 10-20; the glycidyl ether type epoxy resin is one or more of bisphenol A type epoxy resin, phenol formaldehyde type epoxy resin, o-benzaldehyde type epoxy resin, resorcinol formaldehyde type epoxy resin, trihydroxyphenyl methane type epoxy resin and polyalcohol glycidyl ether type epoxy resin, the thermoplastic resin is one or more of bismaleimide resin BMI, polyimide resin PI and polyetherimide PEI, the diamine is one or more of diaminodiphenylmethane DDM, diaminodiphenyl ether DDE and diaminodiphenyl sulfone DDS, and the solvent is acetone, methanol or xylene.
The special high-temperature repairing agent for leaking stoppage of the drying cylinder is constructed at the temperature of more than or equal to 15 ℃ and the humidity of less than or equal to 90% when the high-temperature repairing agent is used for repairing defects in the drying cylinder, and is prepared by treating and cooling an oxide layer of the cylinder body and the cylinder cover by using a rust remover, polishing a joint part of the cylinder body and the cylinder cover, uniformly coating the high-temperature repairing agent on the defect, pressurizing and compacting after curing, coating the high-temperature repairing agent for the second time and curing for 8-12 hours.
The preparation method of the special high-temperature repairing agent for dryer leaking stoppage comprises the following steps: taking polyorganosiloxane into white carbon black and filler, shearing at the speed of 600 plus 1000rpm for 20-40min, adding high-temperature epoxy resin according to the random mixing principle, and uniformly stirring to prepare the high-temperature repairing agent, wherein the mass ratio of the polyorganosiloxane to the white carbon black to the filler to the high-temperature epoxy resin is 35-70:5-10: 1-20: 2 to 25;
the white carbon black/filler is subjected to hydrophobic surface treatment, and the treatment steps are as follows: taking precipitated silica/filler and water, stirring for 5-10min, adding a silane coupling agent, dissolving in a solvent, stirring for 10-30min, aging for 1-2h, filtering, taking a filter cake, washing and drying with ethanol to obtain hydrophobic silica/hydrophobic surface filler, wherein the mass ratio of the precipitated silica/filler, water, the silane coupling agent and the solvent is 80-90: 100-150:2-4:12-30, wherein the silane coupling agent is one or more of KH560, KH792 and DL602, and the solvent is acetone, methanol or benzene;
the high-temperature epoxy resin is prepared by stirring and preheating glycidyl ether epoxy resin and a solvent, then sequentially adding thermoplastic resin and diamine, and stirring at 60-75 ℃ and 200-400rpm for 20-30 min.
The invention has the beneficial effects that:
the polyorganosiloxane has smaller surface tension, higher surface activity, no corrosion to metal, low viscosity-temperature coefficient, water permeability and water absorption limiting and reducing capability after the solid surface is treated, and higher compression resistance; white carbon black is adopted for reinforcing and filling, so that a large number of chemical interfaces can be generated with polysiloxane and epoxy resin, a viscous rheological effect is endowed, crack propagation is prevented, and the stress at definite elongation, the tear strength, the tensile strength and the wear resistance are improved; through filling modification of filler particles, the sliding deformation tension is increased, uniform stress is buffered, overall cracking of the material is reduced, the strength is improved, and the softening starting temperature and the chemical corrosion resistance of the repairing agent are improved;
the epoxy resin system has high adhesive force of large active epoxy groups and polar groups to cast iron metal polar materials, epoxy condensate has good cohesive strength and adhesive strength, the reduction of curing shrinkage is favorable for improving the adhesive strength, the molecular flexibility is improved through modification, the high-temperature resistance is better, the epoxy resin system and polyorganosiloxane form two-component curing, high-performance reaction curing room temperature vulcanized rubber RTV, the long-term temperature resistance is 350 ℃, the instant temperature resistance is 450 ℃, the elasticity and the high-temperature sealing performance are good, the electrical insulation performance is high, the fatigue strength is good, the epoxy resin system can be used for plane sealing and caulking under high-temperature working conditions, particularly in-cylinder repairing of drying cylinders, the epoxy resin system has strong adhesion with the temperature resistance of more than 280 ℃, and the epoxy resin system has certain toughness after curing, and can be suitable for drying cylinders with cold and heat shrinkage under different temperatures.
Detailed Description
The following examples further illustrate embodiments of the present invention.
Example 1
The preparation method of the special high-temperature repairing agent for dryer leak stoppage comprises the following steps:
adding white carbon black and a filler into polyorganosiloxane, shearing at 700rpm for 30min, adding high-temperature epoxy resin according to a random mixing principle, and uniformly stirring to obtain the high-temperature repairing agent, wherein the mass ratio of the polyorganosiloxane to the white carbon black to the filler to the high-temperature epoxy resin is 68:6: 15: 15;
the polyorganosiloxane is polydimethylsiloxane;
the white carbon black is hydrophobic white carbon black;
the filler is inorganic non-metal particles, and the inorganic non-metal particles are composed of nano silicon carbide, talcum powder, nano aluminum oxide and mica powder according to the mass ratio of 1:1:1: 2;
taking precipitated silica/filler and water, stirring for 8min, adding a silane coupling agent, dissolving in a solvent, stirring for 20min, aging for 2h, filtering, taking a filter cake, washing and drying by using ethanol to obtain hydrophobic silica/hydrophobic surface filler, wherein the mass ratio of the precipitated silica/filler, the water, the silane coupling agent and the solvent is 85: 120:3:16, wherein the silane coupling agent is KH560, and the solvent is acetone;
the high-temperature epoxy resin is glycidyl ether epoxy resin, thermoplastic resin, diamine and a solvent in a mass ratio of 58: 20: 6: 13;
the glycidyl ether epoxy resin is bisphenol A epoxy resin and phenol formaldehyde epoxy resin in a mass ratio of 2:1, the thermoplastic resin is bismaleimide resin BMI, the diamine is diaminodiphenylmethane DDM, and diaminodiphenyl ether DDE in a mass ratio of 2:1, wherein the solvent is acetone;
the high-temperature epoxy resin is prepared by stirring glycidyl ether epoxy resin and a solvent, preheating, sequentially adding thermoplastic resin and diamine, and stirring at 72 ℃ and 350rpm for 25 min.
Example 2
The preparation method of the special high-temperature repairing agent for dryer leak stoppage comprises the following steps:
adding white carbon black and a filler into polyorganosiloxane, shearing at 700rpm for 30min, adding high-temperature epoxy resin according to a random mixing principle, and uniformly stirring to obtain the high-temperature repairing agent, wherein the mass ratio of the polyorganosiloxane to the white carbon black to the filler to the high-temperature epoxy resin is 45:7: 15: 8;
the polyorganosiloxane consists of hydroxyl-terminated linear polydimethylsiloxane and cyclic polydimethylsiloxane in a mass ratio of 2: 1;
the white carbon black is hydrophobic white carbon black;
the filler is composed of inorganic non-metal particles and an organic filler according to the mass ratio of 2:1, the inorganic non-metal particles are composed of nano calcium carbonate, nano alumina and kaolin according to the mass ratio of 1:1:2, and the organic filler is hot-melt styrene acrylonitrile copolymer particles;
taking precipitated silica/inorganic non-metallic filler and water, stirring for 8min, adding a silane coupling agent, dissolving in a solvent, stirring for 22min, aging for 1.5h, filtering, taking a filter cake, washing and drying with ethanol to obtain hydrophobic silica/hydrophobic surface inorganic non-metallic filler, wherein the mass ratio of the precipitated silica/inorganic non-metallic filler, the water, the silane coupling agent and the solvent is 83: 110:3:18, wherein the silane coupling agent is KH792, and the solvent is acetone;
the high-temperature epoxy resin is glycidyl ether epoxy resin, thermoplastic resin, diamine and a solvent in a mass ratio of 58: 9: 6: 13;
the glycidyl ether type epoxy resin is composed of phenol formaldehyde type epoxy resin, o-benzaldehyde type epoxy resin and polyhydric alcohol glycidyl ether type epoxy resin according to the mass ratio of 1:1:2, the thermoplastic resin is polyimide resin PI, the diamine is diaminodiphenyl ether DDE and diaminodiphenyl sulfone DDS according to the mass ratio of 2:1, and the solvent is composed of acetone and methanol according to the mass ratio of 2: 1;
the high-temperature epoxy resin is prepared by stirring glycidyl ether epoxy resin and a solvent, preheating, sequentially adding thermoplastic resin and diamine, and stirring at 68 ℃ and 350rpm for 25 min.
Example 3
The preparation method of the special high-temperature repairing agent for dryer leak stoppage comprises the following steps:
adding the polyorganosiloxane into the white carbon black and the filler, shearing for 35min at the speed of 600-1000rpm, adding the high-temperature epoxy resin according to the random mixing principle, and uniformly stirring to prepare the high-temperature repairing agent, wherein the mass ratio of the polyorganosiloxane to the white carbon black to the filler to the high-temperature epoxy resin is 65:8: 15: 17;
the polyorganosiloxane is composed of hydroxyl-terminated linear polydimethylsiloxane and divinyl polydimethylsiloxane in a mass ratio of 1: 2;
the white carbon black is hydrophobic white carbon black;
the filler is inorganic non-metal particles and an organic filler, the inorganic non-metal particles are composed of nano silicon carbide, nano calcium carbonate, nano aluminum oxide and nano titanium oxide according to the mass ratio of 2:1:1:1, and the organic filler is composed of hot-melt acrylonitrile-butadiene-styrene copolymer particles and polyvinyl butyral powder according to the mass ratio of 1: 1;
taking precipitated white carbon black/inorganic non-metallic particle filler and water, stirring for 8min, adding a silane coupling agent, dissolving in a solvent, stirring for 18min, aging for 2h, filtering, taking a filter cake, washing and drying with ethanol to obtain hydrophobic white carbon black/hydrophobic surface filler, wherein the mass ratio of the precipitated white carbon black/inorganic non-metallic particle filler, the water, the silane coupling agent and the solvent is 83: 146:3:21, wherein the silane coupling agent is KH792, and the solvent is methanol;
the high-temperature epoxy resin is glycidyl ether epoxy resin, thermoplastic resin, diamine and a solvent in a mass ratio of 57: 11: 6: 16;
the glycidyl ether epoxy resin is composed of resorcinol formaldehyde epoxy resin and trihydroxyphenyl methane epoxy resin according to the mass ratio of 2:1, the thermoplastic resin is composed of polyimide resin PI and polyetherimide PEI according to the mass ratio of 2:1, the diamine is diaminodiphenylmethane DDM, and the solvent is xylene;
the high-temperature epoxy resin is prepared by stirring glycidyl ether epoxy resin and a solvent, preheating, sequentially adding thermoplastic resin and diamine, and stirring at 72 ℃ and 350rpm for 25 min.
Example 4
The preparation method of the special high-temperature repairing agent for dryer leak stoppage comprises the following steps:
adding white carbon black and a filler into polyorganosiloxane, shearing at 650rpm for 30min, adding high-temperature epoxy resin according to a random mixing principle, and uniformly stirring to obtain the high-temperature repairing agent, wherein the mass ratio of the polyorganosiloxane to the white carbon black to the filler to the high-temperature epoxy resin is 38:11: 13: 17;
the polysiloxane is composed of polydimethylsiloxane and divinyl polydimethylsiloxane in a mass ratio of 1: 1;
the filler is inorganic non-metal particles, and the inorganic non-metal particles are composed of nano calcium carbonate, talcum powder, nano alumina, kaolin and mica powder according to a mass ratio of 2:1:1: 2;
stirring filler and water for 6min, adding a silane coupling agent, dissolving in a solvent, stirring for 20min, aging for 1.5h, filtering, washing a filter cake with ethanol, and drying to obtain the hydrophobic surface filler, wherein the mass ratio of the filler to the water to the silane coupling agent to the solvent is 82: 118:3:17, wherein the silane coupling agent is DL602, and the solvent is acetone;
the high-temperature epoxy resin is glycidyl ether epoxy resin, thermoplastic resin, diamine and a solvent in a mass ratio of 53: 11: 6: 16;
the glycidyl ether type epoxy resin is bisphenol A type epoxy resin, trihydroxyphenyl methane type epoxy resin and polyhydric alcohol glycidyl ether type epoxy resin according to the mass ratio of 2:1:1, the thermoplastic resin is bismaleimide resin BMI and polyimide resin PI according to the mass ratio of 2:1, the diamine is diaminodiphenyl methane DDM and diaminodiphenyl sulfone DDS according to the mass ratio of 2:1, and the solvent is acetone and xylene according to the mass ratio of 2: 1;
the high-temperature epoxy resin is prepared by stirring glycidyl ether epoxy resin and a solvent, preheating, sequentially adding thermoplastic resin and diamine, and stirring at 65 ℃ and 320rpm for 25 min.
The high-temperature repairing agent prepared in the embodiments 1-4 and a commercially available metal repairing agent (poly force JL-101) are used as a comparative example for repairing defects in a drying cylinder, when the defects in the drying cylinder are repaired, construction is carried out at a temperature of more than or equal to 15 ℃ and a humidity of less than or equal to 90%, a rust remover is used for treating a cooling cylinder body and a cylinder cover oxide layer, grinding a combination part of a cylinder body and a cylinder cover, uniformly coating the high-temperature repairing agent on the defect, pressurizing and compacting after curing, and coating the high-temperature repairing agent for the second time, and the detection results of the mechanical property and the curing property (a shearing sample is cured at 23 +/-2 ℃ for 21 days, and the side view temperature is 23 +/-2 ℃) are as follows:
the polyorganosiloxane can be used as an adhesive component for bonding metal, has smaller surface tension and higher surface activity, is non-corrosive and nontoxic to metal, has higher Si-O bond energy, excellent heat resistance and oxidation resistance, has low viscosity-temperature coefficient of interaction between silicone oil molecules-small change of viscosity with temperature, and Si-H bond crosslinking into a macromolecular hydrophobic structure, so that the water permeability and water absorption can be limited and reduced after the surface of a solid is treated, and the compression resistance is higher;
the polydimethylsiloxane PDMS is a dimethyl polymer organic silicon compound, and has the performances of good high and low temperature resistance, high hydrophobicity, good air permeability, excellent weather resistance, moisture resistance, insulativity, physiological inertia, corrosion resistance, radiation resistance and the like; the hydroxyl-terminated linear polydimethylsiloxane belongs to hydroxyl silicone oil, and has the characteristics of low viscosity, water resistance and methyl silicone oil; the cyclic polydimethylsiloxane belongs to cyclopentasiloxane silicone oil and has high compatibility; the divinyl polydimethylsiloxane is vinyl-terminated silicone oil, has good activity, can be subjected to crosslinking addition reaction with hydrogen-containing silicone oil to obtain a net structure, and improves the high-temperature resistance;
white carbon black is adopted for reinforcing and filling, so that a large number of chemical interfaces can be generated with polysiloxane and epoxy resin, a viscous rheological effect is endowed, crack propagation is prevented, and the stress at definite elongation, the tear strength, the tensile strength and the wear resistance are improved;
the white carbon black prepared by the precipitation method is prepared by the precipitation reaction of sodium silicate and inorganic acid, an acid area exists, the outer surfaces of inner polysiloxane and active silanol groups are hydrophilic, the infiltration and dispersion uniformity in an organic phase are influenced, the surface hydrophobicity of the white carbon black is modified, the silane coupling agent is one or more of KH 560-gamma-glycidoxypropyltrimethoxysilane, KH792-N- (beta-aminoethyl) -gamma-aminopropyl trimethyl (ethyl) oxysilane and DL 602-N-beta- (aminoethyl) -gamma-aminopropyl methyl dimethoxysilane, the hydroxyl on the surface of the white carbon black is hydrolyzed with the silane coupling agent to form hydrogen bonds under the wet modification, and the silane coupling agent is further dehydrated and condensed under the heating and drying conditions to cover the surface of the white carbon black, reduce the hydroxyl content and present the hydrophobic surface characteristic, the dispersibility is improved, and agglomeration is avoided;
the filler particles are filled and modified, the operation is easy, the adhesive process performance and the durability are improved through the filler, the proper viscosity is obtained, the reinforcing repairing agent moves during stretching, the sliding deformation tension is increased, the effect of buffering uniform stress is achieved, the overall breakage of the material is reduced, the strength is improved, the softening starting temperature of the repairing agent is improved, and the chemical corrosion resistance is improved;
the inorganic nonmetal particles in the filler have small size, the surface atomic number accounts for the total specific gravity of the particles, the surface activity is larger due to the unsaturation of the surface atoms, the intermolecular acting force is improved due to the surface effect, the acting force which is larger than the van der Waals force is formed on the interface of the epoxy resin, the polyorganosiloxane and the nano particles, so that the epoxy resin, the polyorganosiloxane and the nano particles have better compatibility, and the repair agent absorbs energy when being stressed to generate cracks, and improves the wear resistance, the tensile strength, the impact strength, the thermal decomposition temperature and the thermal stability;
the addition of nano silicon carbide, nano calcium carbonate, talcum powder and kaolin in the inorganic nonmetal particles can improve the hardness and strength after curing, the addition of nano aluminum oxide can improve the bonding strength and heat resistance, the addition of nano titanium oxide has covering power and can accelerate the curing reaction, and the addition of mica powder can improve the curing water resistance and promote the curing reaction; the inorganic non-metal particles are subjected to hydrophobic surface treatment to improve the dispersibility;
the organic filler can avoid the situation that the inorganic filler is unevenly dispersed and lacks chemical bonding force, so that the tearing strength is reduced when the bearing capacity is improved, the organic filler is used for filling and dispersing, and the strength, the heat resistance, the flexibility and the tearing strength of the repairing agent are improved by chemical acting force, and styrene acrylonitrile copolymer particles SAN in the organic filler have excellent hardness, rigidity, dimensional stability and higher bearing capacity; the acrylonitrile-butadiene-styrene copolymer particles ABS have high strength, good toughness and easy processing and forming; the polyvinyl butyral PVB is combined with thermosetting epoxy resin to improve chemical resistance, elasticity, toughness and coating hardness;
polar groups such as large active epoxy groups, amine bonds, ester bonds, hydroxyl groups and the like in the epoxy resin curing system endow the epoxy cured material with high adhesive force to the cast iron metal polar material, the cohesive strength and the adhesive strength of the epoxy cured material are good, the curing shrinkage is small, the adhesive strength is improved, low-molecular volatile matters are not generated, the process performance is excellent, and the chemical stability is good; the distance between double bonds is increased by the addition reaction of diamine and thermoplastic resin and chain extension, the reaction of active hydrogen and epoxy groups is reduced, the molecular flexibility is improved, the crosslinking density of a cured product is reduced, and the modified epoxy resin has better high-temperature resistance;
glycidyl ether epoxy resin is used as matrix resin, wherein bisphenol A epoxy resin-diphenol propane epoxy resin contains hydroxyl and ether bonds, and has high cohesive force and adhesion; the phenol formaldehyde type epoxy resin, the o-benzaldehyde type epoxy resin-phenolic aldehyde polyfunctional group epoxy resin contains more than two epoxy groups, and the cured product has high crosslinking density and high thermal stability; the cured resorcinol type epoxy resin, resorcinol formaldehyde type epoxy resin-polyhydroxy phenol glycidyl ether type epoxy resin have high heat deformation temperature and rigidity; trihydroxyphenyl methane type epoxy resin and polyhydric alcohol glycidyl ether type epoxy resin contain two or more epoxy groups, have low viscosity and are flexible; the thermoplastic resin is a bismaleimide resin BMI-bifunctional compound with an active end group, has the fluidity similar to that of epoxy resin, and polyimide resin PI-polymer with a main chain containing imide groups and polyetherimide PEI-has excellent thermal stability and high temperature resistance; diaminodiphenylmethane DDM-methylene in diamine has high thermal oxidation stability, diaminodiphenyl ether DDE-is introduced into flexible ether bond, and diaminodiphenyl sulfone DDS-is introduced into rigid sulfone group, so that the heat resistance and the shock resistance of the resin are improved;
the room temperature vulcanized rubber RTV is cured by two components of polyorganosiloxane, has high performance and reaction curing, has simple curing process, can reduce the internal stress of epoxy resin, forms a three-dimensional reticular structure, increases the toughness and the high temperature resistance of the epoxy resin, can be cured at 23 ℃ for 120 min, can resist 350 ℃ for a long time, resist 450 ℃ for an instant time, has good elasticity and high-temperature sealing performance, has high electrical insulation performance and good fatigue resistance, can be used for plane sealing and caulking under high-temperature working conditions, particularly for repairing in a drying cylinder, has strong adhesion with temperature resistance of more than 280 ℃, has certain toughness after curing, and can adapt to thermal expansion and cold contraction of the drying cylinder under different temperatures.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The special high-temperature repairing agent for dryer leakage stoppage is characterized by comprising the following components in parts by mass of 35-70:5-10: 1-20: 2-25.
2. The special high-temperature repairing agent for dryer leak stoppage according to claim 1, wherein the polyorganosiloxane is one or more of polydimethylsiloxane, hydroxyl-terminated linear polydimethylsiloxane, cyclic polydimethylsiloxane and divinyl polydimethylsiloxane.
3. The special high-temperature repairing agent for leaking stoppage of the drying cylinder as claimed in claim 1, wherein the white carbon black is hydrophobic white carbon black.
4. The special high-temperature repairing agent for dryer leaking stoppage according to claim 1, wherein the filler is inorganic non-metal particles and/or organic filler, the inorganic non-metal particles are one or more of nano silicon carbide, nano calcium carbonate, talcum powder, nano aluminum oxide, nano titanium oxide, kaolin and mica powder, the inorganic non-metal particles further comprise hydrophobic surface treatment particles, and the organic filler is one or more of styrene acrylonitrile copolymer particles, acrylonitrile-butadiene-styrene copolymer particles and polyvinyl butyral powder.
5. The special high-temperature repairing agent for leaking stoppage of the drying cylinder as claimed in claim 1, wherein the high-temperature epoxy resin is glycidyl ether epoxy resin, thermoplastic resin, diamine and solvent in a mass ratio of 50-65: 5-15: 4-8: 10-20.
6. The special high-temperature repairing agent for dryer leak stoppage according to claim 5, wherein the glycidyl ether type epoxy resin is one or more of bisphenol A type epoxy resin, phenol formaldehyde type epoxy resin, o-benzaldehyde type epoxy resin, resorcinol formaldehyde type epoxy resin, tris (hydroxyphenyl) methane type epoxy resin and polyol glycidyl ether type epoxy resin, the thermoplastic resin is one or more of bismaleimide resin BMI, polyimide resin PI and polyetherimide PEI, the diamine is one or more of diaminodiphenylmethane DDM, diaminodiphenyl ether DDE and diaminodiphenyl sulfone DDS, and the solvent is acetone, methanol or xylene.
7. The special high-temperature repairing agent for leaking stoppage of the drying cylinder as claimed in claim 1, wherein when the high-temperature repairing agent is used for repairing defects in the drying cylinder, construction is carried out at the temperature of more than or equal to 15 ℃ and the humidity of less than or equal to 90%, the rust remover is adopted for treating and cooling an oxide layer of the cylinder body and the cylinder cover, grinding a joint part of the cylinder body and the cylinder cover, uniformly coating the high-temperature repairing agent on the defects, pressurizing and compacting after curing, secondarily coating the high-temperature repairing agent, and curing for 8-12 hours.
8. The preparation method of the special high-temperature repairing agent for dryer leaking stoppage according to any one of claims 1 to 7, which is characterized by comprising the following steps: taking polyorganosiloxane into white carbon black and filler, shearing at the speed of 600 plus 1000rpm for 20-40min, adding high-temperature epoxy resin according to the random mixing principle, and uniformly stirring to prepare the high-temperature repairing agent, wherein the mass ratio of the polyorganosiloxane to the white carbon black to the filler to the high-temperature epoxy resin is 35-70:5-10: 1-20: 2-25.
9. The preparation method of the special high-temperature repairing agent for dryer leaking stoppage according to claim 8, wherein the white carbon black/filler is subjected to hydrophobic surface treatment, and the treatment steps are as follows: taking precipitated silica/filler and water, stirring for 5-10min, adding a silane coupling agent, dissolving in a solvent, stirring for 10-30min, aging for 1-2h, filtering, taking a filter cake, washing and drying with ethanol to obtain hydrophobic silica/hydrophobic surface filler, wherein the mass ratio of the precipitated silica/filler, water, the silane coupling agent and the solvent is 80-90: 100-150:2-4:12-30, wherein the silane coupling agent is one or more of KH560, KH792 and DL602, and the solvent is acetone, methanol or benzene.
10. The preparation method of the special high-temperature repairing agent for dryer plugging as claimed in claim 8, wherein the high-temperature epoxy resin is prepared by sequentially adding the thermoplastic resin and the diamine after the glycidyl ether epoxy resin and the solvent are stirred and preheated, and stirring for 20-30min at 60-75 ℃ and 200-400 rpm.
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