CN115558366B - Synthetic resin coating for high-stability connecting nut and coating process thereof - Google Patents
Synthetic resin coating for high-stability connecting nut and coating process thereof Download PDFInfo
- Publication number
- CN115558366B CN115558366B CN202211340527.XA CN202211340527A CN115558366B CN 115558366 B CN115558366 B CN 115558366B CN 202211340527 A CN202211340527 A CN 202211340527A CN 115558366 B CN115558366 B CN 115558366B
- Authority
- CN
- China
- Prior art keywords
- parts
- synthetic resin
- solvent
- coating
- resin coating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000576 coating method Methods 0.000 title claims abstract description 96
- 239000011248 coating agent Substances 0.000 title claims abstract description 81
- 229920003002 synthetic resin Polymers 0.000 title claims abstract description 50
- 239000000057 synthetic resin Substances 0.000 title claims abstract description 50
- 239000000945 filler Substances 0.000 claims abstract description 47
- 239000002904 solvent Substances 0.000 claims abstract description 45
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 36
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 34
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 24
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 24
- 238000004040 coloring Methods 0.000 claims abstract description 23
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 22
- 238000002360 preparation method Methods 0.000 claims abstract description 19
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 18
- 239000010703 silicon Substances 0.000 claims abstract description 18
- 229920000578 graft copolymer Polymers 0.000 claims abstract description 15
- ITKVLPYNJQOCPW-UHFFFAOYSA-N chloro-(chloromethyl)-dimethylsilane Chemical compound C[Si](C)(Cl)CCl ITKVLPYNJQOCPW-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000013530 defoamer Substances 0.000 claims abstract description 11
- 229920002401 polyacrylamide Polymers 0.000 claims abstract description 10
- 238000006136 alcoholysis reaction Methods 0.000 claims abstract description 7
- 230000005251 gamma ray Effects 0.000 claims abstract description 7
- 238000003756 stirring Methods 0.000 claims description 28
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 21
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical group O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 18
- 238000002156 mixing Methods 0.000 claims description 18
- 239000000203 mixture Substances 0.000 claims description 16
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 claims description 13
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 13
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 12
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 11
- 239000002518 antifoaming agent Substances 0.000 claims description 11
- IGMQAYXTTRYCPZ-UHFFFAOYSA-N chloromethyl-ethoxy-dimethylsilane Chemical compound CCO[Si](C)(C)CCl IGMQAYXTTRYCPZ-UHFFFAOYSA-N 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 11
- 239000004408 titanium dioxide Substances 0.000 claims description 9
- WRMNZCZEMHIOCP-UHFFFAOYSA-N 2-phenylethanol Chemical compound OCCC1=CC=CC=C1 WRMNZCZEMHIOCP-UHFFFAOYSA-N 0.000 claims description 8
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 8
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 8
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 claims description 7
- 239000003112 inhibitor Substances 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 7
- 239000004094 surface-active agent Substances 0.000 claims description 7
- IGFHQQFPSIBGKE-UHFFFAOYSA-N Nonylphenol Natural products CCCCCCCCCC1=CC=C(O)C=C1 IGFHQQFPSIBGKE-UHFFFAOYSA-N 0.000 claims description 6
- 239000006229 carbon black Substances 0.000 claims description 6
- SNQQPOLDUKLAAF-UHFFFAOYSA-N nonylphenol Chemical compound CCCCCCCCCC1=CC=CC=C1O SNQQPOLDUKLAAF-UHFFFAOYSA-N 0.000 claims description 6
- 238000006116 polymerization reaction Methods 0.000 claims description 6
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 6
- LRXTYHSAJDENHV-UHFFFAOYSA-H zinc phosphate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O LRXTYHSAJDENHV-UHFFFAOYSA-H 0.000 claims description 6
- 229910000165 zinc phosphate Inorganic materials 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 5
- 238000005245 sintering Methods 0.000 claims description 5
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 claims description 4
- 229940049964 oleate Drugs 0.000 claims description 4
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 claims description 4
- 229920002503 polyoxyethylene-polyoxypropylene Polymers 0.000 claims description 4
- CNHDIAIOKMXOLK-UHFFFAOYSA-N toluquinol Chemical compound CC1=CC(O)=CC=C1O CNHDIAIOKMXOLK-UHFFFAOYSA-N 0.000 claims description 4
- HVLLSGMXQDNUAL-UHFFFAOYSA-N triphenyl phosphite Chemical compound C=1C=CC=CC=1OP(OC=1C=CC=CC=1)OC1=CC=CC=C1 HVLLSGMXQDNUAL-UHFFFAOYSA-N 0.000 claims description 4
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 claims description 3
- GKXVJHDEWHKBFH-UHFFFAOYSA-N [2-(aminomethyl)phenyl]methanamine Chemical compound NCC1=CC=CC=C1CN GKXVJHDEWHKBFH-UHFFFAOYSA-N 0.000 claims description 3
- BSOPSBIGIYEHGT-UHFFFAOYSA-N dodecyl 2-phenylacetate Chemical compound CCCCCCCCCCCCOC(=O)CC1=CC=CC=C1 BSOPSBIGIYEHGT-UHFFFAOYSA-N 0.000 claims description 3
- 238000002791 soaking Methods 0.000 claims description 3
- WZCQRUWWHSTZEM-UHFFFAOYSA-N 1,3-phenylenediamine Chemical compound NC1=CC=CC(N)=C1 WZCQRUWWHSTZEM-UHFFFAOYSA-N 0.000 claims description 2
- CBCKQZAAMUWICA-UHFFFAOYSA-N 1,4-phenylenediamine Chemical compound NC1=CC=C(N)C=C1 CBCKQZAAMUWICA-UHFFFAOYSA-N 0.000 claims description 2
- VILCJCGEZXAXTO-UHFFFAOYSA-N 2,2,2-tetramine Chemical compound NCCNCCNCCN VILCJCGEZXAXTO-UHFFFAOYSA-N 0.000 claims description 2
- ZNQVEEAIQZEUHB-UHFFFAOYSA-N 2-ethoxyethanol Chemical compound CCOCCO ZNQVEEAIQZEUHB-UHFFFAOYSA-N 0.000 claims description 2
- AFBPFSWMIHJQDM-UHFFFAOYSA-N N-methylaniline Chemical compound CNC1=CC=CC=C1 AFBPFSWMIHJQDM-UHFFFAOYSA-N 0.000 claims description 2
- 229910019142 PO4 Inorganic materials 0.000 claims description 2
- 150000001412 amines Chemical class 0.000 claims description 2
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 2
- ZZTCPWRAHWXWCH-UHFFFAOYSA-N diphenylmethanediamine Chemical compound C=1C=CC=CC=1C(N)(N)C1=CC=CC=C1 ZZTCPWRAHWXWCH-UHFFFAOYSA-N 0.000 claims description 2
- LQZZUXJYWNFBMV-UHFFFAOYSA-N dodecan-1-ol Chemical compound CCCCCCCCCCCCO LQZZUXJYWNFBMV-UHFFFAOYSA-N 0.000 claims description 2
- 150000002191 fatty alcohols Chemical class 0.000 claims description 2
- RBNPOMFGQQGHHO-UHFFFAOYSA-N glyceric acid Chemical compound OCC(O)C(O)=O RBNPOMFGQQGHHO-UHFFFAOYSA-N 0.000 claims description 2
- NWVVVBRKAWDGAB-UHFFFAOYSA-N hydroquinone methyl ether Natural products COC1=CC=C(O)C=C1 NWVVVBRKAWDGAB-UHFFFAOYSA-N 0.000 claims description 2
- 239000011261 inert gas Substances 0.000 claims description 2
- 229940018564 m-phenylenediamine Drugs 0.000 claims description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 2
- 239000010452 phosphate Substances 0.000 claims description 2
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 2
- 230000002285 radioactive effect Effects 0.000 claims description 2
- KVXNKFYSHAUJIA-UHFFFAOYSA-N acetic acid;ethoxyethane Chemical compound CC(O)=O.CCOCC KVXNKFYSHAUJIA-UHFFFAOYSA-N 0.000 claims 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims 1
- NDKWCCLKSWNDBG-UHFFFAOYSA-N zinc;dioxido(dioxo)chromium Chemical group [Zn+2].[O-][Cr]([O-])(=O)=O NDKWCCLKSWNDBG-UHFFFAOYSA-N 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 9
- 150000003839 salts Chemical class 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 7
- 230000009471 action Effects 0.000 abstract description 6
- 239000007921 spray Substances 0.000 abstract description 6
- 239000003999 initiator Substances 0.000 abstract description 3
- 229920001577 copolymer Polymers 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 18
- 229910052751 metal Inorganic materials 0.000 description 15
- 239000002184 metal Substances 0.000 description 15
- 230000000052 comparative effect Effects 0.000 description 14
- 239000003973 paint Substances 0.000 description 14
- 239000000243 solution Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 9
- 239000000758 substrate Substances 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 6
- 229920001296 polysiloxane Polymers 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 5
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 5
- 230000005855 radiation Effects 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 238000002161 passivation Methods 0.000 description 4
- 238000005303 weighing Methods 0.000 description 4
- WDHVIZKSFZNHJB-UHFFFAOYSA-L zinc;butanoate Chemical group [Zn+2].CCCC([O-])=O.CCCC([O-])=O WDHVIZKSFZNHJB-UHFFFAOYSA-L 0.000 description 4
- SVONRAPFKPVNKG-UHFFFAOYSA-N 2-ethoxyethyl acetate Chemical compound CCOCCOC(C)=O SVONRAPFKPVNKG-UHFFFAOYSA-N 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 150000003961 organosilicon compounds Chemical class 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 125000001153 fluoro group Chemical group F* 0.000 description 2
- 239000012433 hydrogen halide Substances 0.000 description 2
- 229910000039 hydrogen halide Inorganic materials 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 238000007086 side reaction Methods 0.000 description 2
- 239000002210 silicon-based material Substances 0.000 description 2
- 229920001909 styrene-acrylic polymer Polymers 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- HMUNWXXNJPVALC-UHFFFAOYSA-N 1-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperazin-1-yl]-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)N1CCN(CC1)C(CN1CC2=C(CC1)NN=N2)=O HMUNWXXNJPVALC-UHFFFAOYSA-N 0.000 description 1
- LDXJRKWFNNFDSA-UHFFFAOYSA-N 2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-1-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]ethanone Chemical compound C1CN(CC2=NNN=C21)CC(=O)N3CCN(CC3)C4=CN=C(N=C4)NCC5=CC(=CC=C5)OC(F)(F)F LDXJRKWFNNFDSA-UHFFFAOYSA-N 0.000 description 1
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- MKYBYDHXWVHEJW-UHFFFAOYSA-N N-[1-oxo-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propan-2-yl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(C(C)NC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 MKYBYDHXWVHEJW-UHFFFAOYSA-N 0.000 description 1
- 206010033799 Paralysis Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000002421 anti-septic effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229940071162 caseinate Drugs 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 239000006184 cosolvent Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012044 organic layer Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 125000005007 perfluorooctyl group Chemical group FC(C(C(C(C(C(C(C(F)(F)F)(F)F)(F)F)(F)F)(F)F)(F)F)(F)F)(F)* 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D151/00—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers
- C09D151/003—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers grafted on to macromolecular compounds obtained by reactions only involving unsaturated carbon-to-carbon bonds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F259/00—Macromolecular compounds obtained by polymerising monomers on to polymers of halogen containing monomers as defined in group C08F14/00
- C08F259/08—Macromolecular compounds obtained by polymerising monomers on to polymers of halogen containing monomers as defined in group C08F14/00 on to polymers containing fluorine
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F265/00—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00
- C08F265/10—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00 on to polymers of amides or imides
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
- C09D5/082—Anti-corrosive paints characterised by the anti-corrosive pigment
- C09D5/084—Inorganic compounds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- 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
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- 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
- C08K2003/2251—Oxides; Hydroxides of metals of chromium
-
- 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
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/328—Phosphates of heavy metals
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Paints Or Removers (AREA)
Abstract
The invention belongs to the technical field of organic chemical industry, and particularly relates to a synthetic resin coating for a high-stability connecting nut and a coating process thereof. The synthetic resin coating comprises modified organic silicon, coloring filler, antirust filler, defoamer, curing agent and solvent. The preparation method of the modified organic silicon comprises the following steps: firstly, chloromethyl dimethyl chlorosilane and ethanol are subjected to alcoholysis and then grafted onto a polyacrylamide molecular chain to obtain a grafted copolymer; then the obtained graft copolymer reacts with polytetrafluoroethylene after gamma-ray irradiation treatment under the action of an initiator to obtain the graft copolymer; the prepared coating has good bonding effect with the base material, and meanwhile, the prepared coating also has good elastic property, impact resistance and salt spray resistance.
Description
Technical Field
The invention belongs to the technical field of organic chemical industry, and particularly relates to a synthetic resin coating for a high-stability connecting nut and a coating process thereof.
Background
The connecting nut is a fastener which is provided with internal threads and is matched with a bolt for use, is a universal base member with a wide application range, and is widely applied to the industrial fields of transportation, mechanical equipment and the like. With the development of industrial modernization, the requirements on the surface properties of mechanical equipment and parts are higher and higher. Some fasteners in high temperature, high humidity, heavy load, corrosive media and other environments often cause the whole equipment to be disabled due to corrosion and damage. The fastener used in the marine environment is in a severe environment with high humidity and high salt mist, the fastener is often rusted, so that the fastener is difficult or even impossible to disassemble, and the corrosion problem is more serious; meanwhile, as the damage and failure of the fastener can cause equipment paralysis and even cause safety accidents, the production safety of people is greatly endangered, so that the protection life of the fastener is prolonged.
The common anti-corrosion modes of the fastener are as follows: 1. electroplating: placing the standard component into a metal solution, and then covering the surface of the standard component with a layer of metal through current; 2. mechanical plating: the standard component is subjected to mechanical plating, namely, metal particles are subjected to cold welding on the standard component, so that some functions of the surface layer of the standard component are ensured; 3. and (3) heat treatment: carrying out heat treatment on the surface layer of the standard part; 4. surface passivation: the hardness of the standard can be enhanced, and the oxidation of the standard can be greatly reduced. The surface covered organic layer is one of the most widely used metal corrosion prevention and protection means, and the protection mechanism of the coating weakens the reaction which causes the metal to corrode by adding a protective layer between the metal and the corrosion environment.
The Chinese patent with the application number 201911164634.X discloses a synthetic resin coating of a high-stability connecting nut and a coating process thereof, wherein the synthetic resin coating is prepared by mixing modified organic silicon resin, epoxy resin, silicon dioxide, toner, butyl acetate and auxiliary materials according to a certain proportion, adding the mixture into water and fully stirring the mixture; the connecting nut with the synthetic resin coating is obtained after smearing or soaking and sintering, has good chemical corrosion resistance and good electrical insulation, but the modified organic silicon resin and the epoxy resin are directly mixed in the preparation process, and uneven density, micropores and crack gaps are formed in the coating due to crosslinking, polycondensation, solvent volatilization and the like of organic molecules.
The Chinese patent with application number 202010812278.4 discloses a water-based antirust paint and a preparation method thereof, wherein the water-based antirust paint consists of a first component and a second component, and the first component comprises: the paint comprises a water-based epoxy curing agent, a coloring filler, an antirust pigment, a filler, graphene slurry, zinc powder, a rust conversion agent, an auxiliary agent and a cosolvent; the second component comprises: aqueous acrylic modified epoxy resins; the water-based anticorrosive paint is obtained by treating the first component and mixing the first component with the second component according to a certain mass ratio. The coating can be rapidly formed into a film, has good adhesive force and rust resistance, high environmental protection performance and improved application universality, but has poor chemical resistance and short service life.
Disclosure of Invention
In order to solve the problems, the invention provides the synthetic resin coating for the high-stability connecting nut and the coating process thereof, and the synthetic resin coating is obtained by mixing modified organosilicon, coloring filler, antirust filler, defoamer and curing agent in a solvent, and has good film forming property, chemical stability and adhesive force.
The technical scheme for solving the technical problems is as follows:
the synthetic resin coating for the high-stability connecting nut comprises, by weight, 28-35 parts of modified organosilicon, 5-8 parts of coloring filler, 8-12 parts of antirust filler, 2-4 parts of defoamer, 3-5 parts of curing agent and 28-35 parts of solvent; preferably, it is: 30 parts of modified organosilicon, 6 parts of coloring filler, 10 parts of antirust filler, 3 parts of defoamer, 4 parts of curing agent and 32 parts of solvent.
The preparation method of the modified organic silicon comprises the following steps:
s1, adding chloromethyl dimethyl chlorosilane by taking dimethylbenzene as a solvent, increasing the temperature to 25-40 ℃, preferably 35 ℃, adding ethanol solution into the solvent to carry out alcoholysis reaction, wherein the ethanol is added dropwise to obtain chloromethyl ethoxy dimethyl silane, and the reaction process is as follows:
s2, adding polyacrylamide by taking ethylene glycol as a solvent, heating and stirring, adding chloromethyl ethoxy dimethyl silane into the solvent when the temperature is increased to 65-80 ℃, preferably 75 ℃, and reacting for 4-6 hours, preferably 6 hours after the addition is finished to obtain a graft copolymer, wherein the reaction process is as follows:
s3, placing polytetrafluoroethylene micropowder in 60 Co radioactive source (activity 1.85×10) 14 Bq), adding a surfactant into tetrahydrofuran which is used as a solvent, adding pre-irradiation polytetrafluoroethylene micropowder after stirring uniformly, stirring to uniformly suspend the polytetrafluoroethylene micropowder in the solution, adding the graft copolymer prepared in the step S2, n-butyl acrylate and a polymerization inhibitor into the solution, introducing inert gas, heating to 75-85 ℃ after air in a system is exhausted, and reacting for 6-8h to obtain the modified polytetrafluoroethylene.
Further, the coloring filler is titanium dioxide and carbon black according to the mass ratio of 70-80:1, and preferably the mass ratio of the titanium dioxide to the carbon black is 78:1.
Further, the antirust filler is zinc butyrate and zinc phosphate according to the mass ratio of 3-5:1, preferably zinc caseinate: the mass ratio of the zinc phosphate is 4:1.
Further, the defoaming agent is one or a mixture of more of phenethyl alcohol oleate, lauryl phenylacetate, polydimethylsiloxane, polyoxyethylene polyoxypropylene pentaerythritol ether, polyoxyethylene polyoxypropylene alcohol amine ether and polyoxypropylene glycerol ether; the curing agent is one or more of diethylenetriamine, triethylenetetramine, xylylenediamine, m-phenylenediamine and diaminodiphenylmethane; the solvent is one or more of ethylene glycol ethyl ether acetate, ethylene glycol monoethyl ether and ethylene glycol monobutyl ether.
Further, in the step S3, the surfactant is one or more of nonylphenol polyoxyethylene ether, lauryl alcohol ether phosphate, ethoxy perfluorooctyl alcohol, and fatty alcohol polyoxyethylene ether; the polymerization inhibitor is one or more of hydroquinone, methyl hydroquinone, p-phenylenediamine, methylaniline, nitroylene and triphenyl phosphite.
The coating process of the synthetic resin coating of the high-stability connecting nut comprises the steps of weighing all raw materials according to a proportion, mixing modified organic silicon, a defoaming agent and a solvent, stirring for 40-60min at a rotating speed of 200-400 rpm, preferably stirring for 60min at a rotating speed of 350 rpm, adding a coloring filler and an antirust filler after uniformly mixing, continuously stirring for 20-40min, preferably 35min at the same rotating speed, adding a curing agent, and stirring for 10-15min at a rotating speed of 150-250 rpm to obtain the synthetic resin coating, preferably stirring for 15min at a rotating speed of 200 rpm; the outer surface of the connecting nut is coated by a smearing or soaking mode, preferably a smearing mode, the connecting nut coated with the synthetic resin coating is sintered for 10-20min at 145-165 ℃, preferably for 15min at 155 ℃, and the connecting nut coated with the synthetic resin coating is obtained after cooling to normal temperature.
The invention has the following beneficial effects:
the synthetic resin coating comprises modified organic silicon, coloring filler, antirust filler, defoamer, curing agent and solvent. The titanium dioxide contained in the coloring filler has stronger adhesiveness and is not easy to cause chemical change; the antirust filler can perform oxidation reaction with the metal surface to generate a passivation film, so that the metal surface is passivated, and the metal surface is protected; the addition of the modified organic silicon can form a strong Si-O-Me covalent bond at the interface between the coating and the substrate, so that the bonding effect between the coating and the substrate is effectively enhanced, meanwhile, the prepared modified organic silicon material contains a flexible siloxane chain segment, so that the elasticity of the coating can be enhanced, in the use process of the connecting nut, the coating can be effectively prevented from falling off or cracking in the extrusion process, the prepared synthetic resin coating has good hydrophobicity, the surface rust caused by the contact of an aqueous solution and the surface of the substrate is avoided, and the service life is prolonged.
Detailed Description
The following description of the technical solutions in the embodiments of the present application will be made clearly and completely in connection with the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
Chloromethyl dimethyl chlorosilane CAS number 1719-57-9; xylene CAS number 1330-20-7; ethanol CAS number 64-17-5; ethylene glycol CAS number 107-21-1; polyacrylamide CAS number 9003-05-8; tetrahydrofuran CAS number 109-99-9; nonylphenol polyoxyethylene ether CAS number 9016-45-9; n-butyl acrylate CAS number 141-32-2; hydroquinone CAS number 123-31-9; polytetrafluoroethylene micropowder was purchased from kashan Shen Jia technologies, inc, all reagents were commercially available.
Example 1
The synthetic resin coating for the high-stability connecting nut comprises the following components in parts by weight, 30 parts of modified organosilicon, 6 parts of coloring filler, 10 parts of antirust filler, 3 parts of defoamer, 4 parts of curing agent and 32 parts of solvent; wherein the coloring filler is titanium dioxide and carbon black according to the mass ratio of 78:1, the titanium dioxide has better adhesiveness and strong chemical stability, and can ensure the stability of the coating; the antirust filler is zinc butyrate and zinc phosphate according to the mass ratio of 4:1, the antirust filler adopted can generate oxidation reaction with the metal surface to generate a passivation film, so that the metal surface is passivated, and the metal surface is protected; the defoaming agent is phenethyl alcohol oleate, and the surface tension in the preparation process can be reduced by adding the defoaming agent, so that the generated foam is inhibited or eliminated; the curing agent is diethylenetriamine; the solvent is ethylene glycol ethyl ether acetate.
The preparation method of the modified organic silicon comprises the following steps:
s1, adding 35 parts by weight of chloromethyl dimethyl chlorosilane into 35 parts by weight of dimethylbenzene serving as a solvent, raising the temperature to 35 ℃, and adding 32 parts by weight of ethanol solution into the solvent to perform alcoholysis reaction, wherein the ethanol is added dropwise, and the chloromethyl ethoxy dimethyl silane is obtained through reaction; the ethanol is added in a dropwise manner, so that the contact between the ethanol and hydrogen halide can be reduced, the occurrence of side reaction is inhibited, and the reaction process is as follows:
s2, adding 35 parts by weight of polyacrylamide by taking 35 parts by weight of ethylene glycol as a solvent, heating and stirring, adding 32 parts by weight of chloromethyl ethoxy dimethyl silane when the temperature is increased to 75 ℃, and reacting for 6 hours after the addition is finished to obtain a graft copolymer, wherein the reaction process is as follows:
s3, placing 40 parts by weight of polytetrafluoroethylene micro powder 60 Gamma-ray irradiation treatment (activity 1.85×10) was performed in Co radiation source 14 Bq), 45 parts by weight of tetrahydrofuran is taken as a solvent, 5 parts by weight of nonylphenol polyoxyethylene ether as a surfactant is added into the solvent, 35 parts by weight of polytetrafluoroethylene micro powder subjected to pre-irradiation treatment is added after the mixture is uniformly stirred, the mixture is uniformly suspended in the solution, and then adding 32 parts by weight of the graft copolymer prepared in the step S2, 8 parts by weight of n-butyl acrylate and 4 parts by weight of hydroquinone serving as a polymerization inhibitor into the mixture, introducing nitrogen, heating to 80 ℃ after the air in the system is emptied, and reacting for 8 hours to obtain the modified styrene-acrylic copolymer.
The coating process of the synthetic resin coating of the high-stability connecting nut comprises the steps of weighing the raw materials according to the proportion, mixing the modified organic silicon, the defoaming agent and the solvent, stirring for 60min at the rotating speed of 350 r/min, adding the coloring filler and the antirust filler after uniformly mixing, keeping the same rotating speed, continuously stirring for 35min, adding the curing agent into the mixture, and stirring for 15min at the rotating speed of 200 r/min to obtain the synthetic resin coating; and (3) coating the outer surface of the connecting nut in a smearing way, removing impurities on the surface of the connecting nut before coating, sintering the connecting nut coated with the synthetic resin coating at 155 ℃ for 15min, and cooling to normal temperature to obtain the connecting nut coated with the synthetic resin coating.
Example 2
In this example, compared with example 1, the amounts of the components in the synthetic resin coating were different, the materials were selected for some of the components, the preparation conditions for the modified silicone were different, the coating process for the synthetic resin coating was different, and the rest of the conditions and the preparation process were as described in example 1.
The synthetic resin coating for the high-stability connecting nut comprises the following components in parts by weight, 28 parts of modified organosilicon, 5 parts of coloring filler, 8 parts of antirust filler, 2 parts of defoamer, 3 parts of curing agent and 28 parts of solvent; wherein the coloring filler is titanium dioxide and carbon black according to the mass ratio of 70:1, mixing; the antirust filler is zinc butyrate and zinc phosphate according to the mass ratio of 3:1, mixing; the defoaming agent is lauryl phenylacetate; the curing agent is xylylenediamine; the solvent is ethylene glycol monobutyl ether.
The preparation method of the modified organic silicon comprises the following steps:
s1, adding 30 parts by weight of chloromethyl dimethyl chlorosilane into 30 parts by weight of dimethylbenzene serving as a solvent, raising the temperature to 25 ℃, adding 25 parts by weight of ethanol solution into the solvent to perform alcoholysis reaction, and reacting to obtain chloromethyl ethoxy dimethyl silane;
s2, adding 30 parts by weight of polyacrylamide by taking 30 parts by weight of ethylene glycol as a solvent, heating and stirring, adding 25 parts by weight of chloromethyl ethoxy dimethyl silane when the temperature is increased to 65 ℃, and reacting for 4 hours after the addition is finished to obtain a graft copolymer;
s3, placing 35 parts by weight of polytetrafluoroethylene micro powder 60 Gamma-ray irradiation treatment (activity 1.85×10) was performed in Co radiation source 14 Bq), 40 parts by weight of tetrahydrofuran is taken as a solvent, 3 parts by weight of nonylphenol polyoxyethylene ether as a surfactant is added into the solvent, 30 parts by weight of polytetrafluoroethylene micro powder subjected to pre-irradiation treatment is added after the mixture is uniformly stirred, the mixture is uniformly suspended in the solution, and then 27 parts by weight of the graft copolymer prepared in the step S2, 6 parts by weight of n-butyl acrylate and 3 parts by weight of hydroquinone inhibitor are added into the mixture, nitrogen is introduced, and the mixture is heated to 75 ℃ after the air in the system is emptied, and then the mixture is reacted for 6 hours to obtain the modified styrene-acrylic copolymer.
The coating process of the synthetic resin coating of the high-stability connecting nut comprises the steps of weighing the raw materials according to the proportion, mixing the modified organic silicon, the defoaming agent and the solvent, stirring for 40min at the rotating speed of 200 revolutions per minute, adding the coloring filler and the antirust filler after uniformly mixing, keeping the same rotating speed, continuously stirring for 20min, adding the curing agent into the mixture, and stirring for 10min at the rotating speed of 150 revolutions per minute to obtain the synthetic resin coating; and (3) coating the outer surface of the connecting nut in a smearing way, sintering the connecting nut coated with the synthetic resin coating for 10min at 145 ℃, and cooling to normal temperature to obtain the connecting nut coated with the synthetic resin coating.
Example 3
In this example, compared with example 1, the amounts of the components in the synthetic resin coating were different, the materials were selected for some of the components, the preparation conditions for the modified silicone were different, the coating process for the synthetic resin coating was different, and the rest of the conditions and the preparation process were as described in example 1.
The synthetic resin coating for the high-stability connecting nut comprises the following components in parts by weight, 35 parts of modified organosilicon, 8 parts of coloring filler, 12 parts of antirust filler, 4 parts of defoamer, 5 parts of curing agent and 35 parts of solvent; wherein the coloring filler is titanium dioxide and carbon black according to the mass ratio of 80:1, mixing; the antirust filler is zinc butyrate and zinc phosphate according to the mass ratio of 5:1, mixing; the defoaming agent is phenethyl alcohol oleate; the curing agent is diethylenetriamine; the solvent is ethylene glycol ethyl ether acetate.
The preparation method of the modified organic silicon comprises the following steps:
s1, adding 40 parts by weight of chloromethyl dimethyl chlorosilane into 40 parts by weight of dimethylbenzene serving as a solvent, raising the temperature to 40 ℃, and adding 38 parts by weight of ethanol solution into the solvent to perform alcoholysis reaction, wherein the ethanol is added dropwise, and the chloromethyl ethoxy dimethyl silane is obtained through reaction; the ethanol is added in a dropwise manner, so that the contact between the ethanol and hydrogen halide can be reduced, and the occurrence of side reactions is inhibited;
s2, adding 40 parts by weight of polyacrylamide by taking 35 parts by weight of ethylene glycol as a solvent, heating and stirring, and adding 38 parts by weight of chloromethyl ethoxy dimethyl silane when the temperature is increased to 80 ℃, and reacting for 6 hours after the addition is completed to obtain a graft copolymer;
s3, placing 45 parts by weight of polytetrafluoroethylene micro powder 60 Gamma-ray irradiation treatment (activity 1.85×10) was performed in Co radiation source 14 Bq), 50 parts by weight of tetrahydrofuran is taken as a solvent, 7 parts by weight of nonylphenol polyoxyethylene ether as a surfactant is added, 35 parts by weight of polytetrafluoroethylene micropowder subjected to pre-irradiation treatment is added after uniform stirring, the polytetrafluoroethylene micropowder is uniformly suspended in the solution after stirring, 32 parts by weight of graft copolymer prepared in the step S2, 10 parts by weight of n-butyl acrylate and 5 parts by weight of hydroquinone as a polymerization inhibitor are added,introducing nitrogen, heating to 85 ℃ after the air in the system is emptied, and reacting for 8 hours to obtain the nitrogen-containing compound.
The coating process of the synthetic resin coating of the high-stability connecting nut comprises the steps of weighing the raw materials according to the proportion, mixing the modified organic silicon, the defoaming agent and the solvent, stirring for 60min at the rotation speed of 400 r/min, adding the coloring filler and the antirust filler after uniformly mixing, keeping the same rotation speed, continuously stirring for 40min, adding the curing agent into the mixture, and stirring for 15min at the rotation speed of 250 r/min to obtain the synthetic resin coating; and (3) coating the outer surface of the connecting nut in a smearing way, sintering the connecting nut coated with the synthetic resin coating for 20min at 165 ℃, and cooling to normal temperature to obtain the connecting nut coated with the synthetic resin coating.
Comparative example 1
In this comparative example, compared with example 1, the modified silicone in the synthetic resin coating was replaced with chloromethyl dimethyl chlorosilane, and the rest of the components and the preparation process were referred to in example 1.
Comparative example 2
In this comparative example, compared with example 1, the modified silicone in the synthetic resin coating was replaced with chloromethyl ethoxy dimethyl silane, and the rest of the components and the preparation process were referred to in example 1.
Comparative example 3
In this comparative example, compared with example 1, the modified silicone in the synthetic resin coating was replaced with the graft copolymer prepared in step S2, and the rest of the components and the preparation process were referred to in example 1.
Comparative example 4
In this comparative example, compared with example 1, the modified silicone in the synthetic resin coating was replaced with a mixture of chloromethyl dimethyl chlorosilane, polyacrylamide and polytetrafluoroethylene in a mass ratio of 1:1:1, and the rest of the components and the preparation process were referred to example 1.
Correlation testing
The test specimen was Q235 steel, the synthetic resin coatings prepared in examples 1 to 3 and comparative examples 1 to 4 were coated on the surfaces thereof, and the coated samples were sintered at 155℃for 15 minutes and cooled to room temperature for use. The surface impurities of the sample were removed using cotton cloth before coating, and no other surface treatment was performed.
1. Adhesion test
The advantages and disadvantages of the coating adhesion relate to the corrosion resistance and the wear resistance of the coating, and are important performance indexes of the coating. And testing the adhesive force of the coating by using a cross-hatch adhesive force instrument. The adhesion strength of the coating to the substrate was judged by testing according to GB/T9286-1998, test results of 0 to 5 scale, and the test results are shown in Table 1.
Wherein: level 0: the cutting edge is completely smooth, and no lattice falls off; stage 1: a small amount of flakes are separated at the cutting intersection of the coating, and the affected area of the cross-cut area is not more than 5%;2 stages: the area of the cut edge or intersection where the coating drops off is greater than 5%, but not greater than 15%;3 stages: partial peeling or full-scale peeling or partial lattice peeling is carried out along the edge of the notch, and the peeling area is more than 15 percent but less than 35 percent; 4 stages: the edges of the cuts flake off or some of the squares flake off partially or fully, with an area greater than 35% but less than 65% of the cross-hatch area; 5 stages: at the edges and crossing points of the scribe lines there is a flaking of paint drop, and the total area dropped is greater than 65%.
2. Impact resistance test
The impact resistance of the paint film was measured by the GB.T1732.1993 paint film impact resistance measurement method using a QCJ paint film impactor and by dropping the impact paint film from a high place with a weight, and the impact resistance of the paint film was expressed as the impact of the weight with the maximum height at which the weight was dropped on a template without causing damage to the paint film, and the test results are shown in Table 1.
3. Salt spray resistance test
Salt spray resistance was measured according to GB/T1771-2007 and the test results are shown in Table 1.
4. Contact angle test
The water drops were dropped on the prepared sample surface by using a syringe, and the angle between the water drop surface and the sample surface was measured, and the test results are shown in table 1.
Table 1 performance characterization test
| Group of | Adhesion force | Impact resistance/cm | Salt spray resistance | Contact angle |
| Example 1 | 0 | 50 | 600h | 125° |
| Example 2 | 1 | 50 | 600h | 122° |
| Example 3 | 1 | 50 | 600h | 121° |
| Comparative example 1 | 4 | 40 | 450h | 109° |
| Comparative example 2 | 3 | 45 | 450h | 106° |
| Comparative example 3 | 2 | 45 | 550h | 96° |
| Comparative example 4 | 4 | 40 | 500h | 102° |
As can be seen from the data in Table 1, the synthetic resin coating prepared in example 1 has the best adhesion, the adhesion or the adhesion strength refers to the firmness of adhesion of a paint film to a substrate, the size of the paint film directly influences the protective capability of the coating to the substrate, and good adhesion can effectively prevent penetration of corrosive media to a substrate. In the impact resistance test of examples 1 to 3, the falling height was 50cm without cracks, indicating that the toughness and impact resistance of the prepared coating were good. In the use process, the coating is always inevitably collided with other objects for various reasons, and if the coating has no good impact resistance, the coating is easy to fall off from the base material, so that the protection effect is not realized. The results of the test in examples 1 to 3 were superior to those of comparative examples 1 to 4 in the salt spray resistance test, indicating that the synthetic resin coatings prepared in examples 1 to 3 had excellent salt spray resistance. In the contact angle test, the contact angle of examples 1 to 3 was 120 ° or more, indicating that it has excellent hydrophobicity, and the hydrophobicity of example 1 was optimal. The performance test data are combined, and the overall performance of example 1 is most excellent.
The connecting nut is used as a fastener matched with a bolt and is often applied to severe environments with high humidity and high salt mistBecause it corrodes the damage and takes place to rust and die, causes the dismantlement difficulty even unable dismantlement, so carry out effectual antiseptic measure to it can effectually reduce the incident that causes because fastener damage inefficacy. In the invention, the surface of the connecting nut is protected by coating synthetic resin paint. The synthetic resin coating comprises modified organic silicon, coloring filler, antirust filler, defoamer, curing agent and solvent. The titanium dioxide contained in the coloring filler has strong adhesiveness and is not easy to cause chemical change; the antirust filler can perform oxidation reaction with the metal surface to generate a passivation film, so that the metal surface is passivated, and the metal surface is protected; the defoamer can reduce surface tension in the preparation process, inhibit foam generation or eliminate foam generated. The preparation method of the modified organic silicon comprises the following steps: firstly, chloromethyl dimethyl chlorosilane and ethanol are subjected to alcoholysis and then grafted onto a polyacrylamide molecular chain to obtain a grafted copolymer; and reacting the obtained graft copolymer with polytetrafluoroethylene subjected to gamma-ray irradiation treatment under the action of an initiator to obtain the modified organosilicon material. The organosilicon compound is mainly a siloxane chain segment, and because the main chain of the organosilicon compound is a flexible siloxane chain segment, the organosilicon compound has the characteristic of good weather resistance because of higher siloxane bond energy, and can form a strong Si-O-Me covalent bond at an interface after a metal surface is formed into a film, so that the bonding effect between a coating and a substrate can be effectively enhanced. The polyacrylamide is a linear organic high polymer, can play a role of connecting and bridging among particles, and can form a strong adsorption effect with other particle substances in the coating, so that the coating has good suspension property and dispersibility. The polytetrafluoroethylene molecular structure is completely symmetrical and nonpolar, and meanwhile, the F atom has larger electronegativity, so that the polytetrafluoroethylene has extremely low surface energy and super-strong hydrophobicity. Because of good chemical stability, the polytetrafluoroethylene is difficult to generate interdiffusion and entanglement among polymer molecular chains, so the polytetrafluoroethylene is pretreated in the invention by adopting a gamma-ray ionization radiation mode, and after high-energy radiation, the main chain C-C bond of the polytetrafluoroethylene is broken or one fluorine atom is lost to form inter-chain free radical-CF 2 -CF·-CF 2 -and chain end radical-CF 2 -CF 2 After which it is oxidized to-CF in the presence of oxygen 2 -CF(CF 2 ) -O-O.and-CF 2 -CF 2 And the O-O is reacted with the obtained graft copolymer under the action of an initiator, so that the prepared modified organosilicon material has good hydrophobicity, the surface rust caused by the contact of an aqueous solution and the surface of a substrate is avoided, and the service life is prolonged. Meanwhile, the prepared modified organic silicon material contains a flexible siloxane chain segment, so that the elasticity of the coating can be enhanced, and the coating can be effectively prevented from falling off or cracking in the extrusion process in the use process of the connecting nut.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the application, the scope of which is defined in the appended claims and their equivalents.
Claims (2)
1. The synthetic resin coating for the high-stability connecting nut is characterized by comprising the following components in parts by weight, 30 parts of modified organosilicon, 6 parts of coloring filler, 10 parts of antirust filler, 3 parts of defoamer, 4 parts of curing agent and 32 parts of solvent;
the coloring filler is titanium dioxide and carbon black according to the mass ratio of 78:1, mixing;
the antirust filler is zinc chromate and zinc phosphate according to the mass ratio of 4:1, mixing;
the preparation method of the modified organic silicon comprises the following steps:
s1, adding chloromethyl dimethyl chlorosilane into dimethylbenzene serving as a solvent, increasing the temperature to 25-40 ℃, and adding ethanol solution into the solvent to perform alcoholysis reaction to obtain chloromethyl ethoxy dimethyl silane, wherein the ethanol is added dropwise;
s2, adding polyacrylamide by taking ethylene glycol as a solvent, heating and stirring, and adding chloromethyl ethoxy dimethyl silane when the temperature is increased to 65-80 ℃, and reacting for 4-6 hours after the addition is completed to obtain a graft copolymer;
s3, placing polytetrafluoroethylene micropowder in 60 Carrying out gamma-ray irradiation treatment in a Co radioactive source, taking tetrahydrofuran as a solvent, adding a surfactant into the solvent, stirring uniformly, adding pre-irradiation polytetrafluoroethylene micro powder, stirring to uniformly suspend the polytetrafluoroethylene micro powder in the solution, adding the graft copolymer prepared in the step S2, n-butyl acrylate and a polymerization inhibitor into the solution, introducing inert gas, heating to 75-85 ℃ after air in a system is exhausted, and reacting for 6-8 hours to obtain the modified polytetrafluoroethylene;
the defoaming agent is one or more of phenethyl alcohol oleate, lauryl phenylacetate, polydimethylsiloxane, polyoxyethylene polyoxypropylene pentaerythritol ether, polyoxyethylene polyoxypropylene alcohol amine ether and polyoxypropylene glycerol ether;
the curing agent is one or more of diethylenetriamine, triethylenetetramine, xylylenediamine, m-phenylenediamine and diaminodiphenylmethane;
the solvent is one or more of glycol diethyl ether acetate, glycol monoethyl ether and glycol monobutyl ether;
in the step S3, the surfactant is one or a mixture of a plurality of nonylphenol polyoxyethylene ether, lauryl alcohol ether phosphate and fatty alcohol polyoxyethylene ether; the polymerization inhibitor is one or more of hydroquinone, methyl hydroquinone, p-phenylenediamine, methylaniline, nitroylene and triphenyl phosphite.
2. The coating process of the synthetic resin coating of the high-stability connecting nut according to claim 1, wherein the raw materials are weighed according to a proportion, modified organic silicon, a defoaming agent and a solvent are mixed, stirred for 40-60min at a rotation speed of 200-400 rpm, a coloring filler and an antirust filler are added after uniform mixing, the stirring is continued for 20-40min at the same rotation speed, a curing agent is added, and stirring is carried out for 10-15min at a rotation speed of 150-250 rpm to obtain the synthetic resin coating; and (3) coating the outer surface of the connecting nut in a smearing or soaking mode, sintering the connecting nut coated with the synthetic resin coating at 145-165 ℃ for 10-20min, and cooling to normal temperature to obtain the connecting nut coated with the synthetic resin coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211340527.XA CN115558366B (en) | 2022-10-28 | 2022-10-28 | Synthetic resin coating for high-stability connecting nut and coating process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211340527.XA CN115558366B (en) | 2022-10-28 | 2022-10-28 | Synthetic resin coating for high-stability connecting nut and coating process thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115558366A CN115558366A (en) | 2023-01-03 |
| CN115558366B true CN115558366B (en) | 2024-03-26 |
Family
ID=84769099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211340527.XA Active CN115558366B (en) | 2022-10-28 | 2022-10-28 | Synthetic resin coating for high-stability connecting nut and coating process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115558366B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117264316B (en) * | 2023-08-24 | 2024-05-14 | 江苏海聚新材料科技有限公司 | Antistatic polyolefin composition and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101362778A (en) * | 2008-09-16 | 2009-02-11 | 浙江大学 | Preparation method of chloromethyl-oxyethyl-dimethylsilane |
| CN105315847A (en) * | 2015-11-25 | 2016-02-10 | 安徽圣德建材科技有限公司 | Polytetrafluoroethylene modified epoxy resin powder paint |
| CN105985670A (en) * | 2015-02-11 | 2016-10-05 | 国家电网公司 | Insulator capable of inhibiting icing |
| CN110713791A (en) * | 2019-11-25 | 2020-01-21 | 浙江中通汽车零部件有限公司 | Synthetic resin paint for high-stability connecting nut and coating process thereof |
-
2022
- 2022-10-28 CN CN202211340527.XA patent/CN115558366B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101362778A (en) * | 2008-09-16 | 2009-02-11 | 浙江大学 | Preparation method of chloromethyl-oxyethyl-dimethylsilane |
| CN105985670A (en) * | 2015-02-11 | 2016-10-05 | 国家电网公司 | Insulator capable of inhibiting icing |
| CN105315847A (en) * | 2015-11-25 | 2016-02-10 | 安徽圣德建材科技有限公司 | Polytetrafluoroethylene modified epoxy resin powder paint |
| CN110713791A (en) * | 2019-11-25 | 2020-01-21 | 浙江中通汽车零部件有限公司 | Synthetic resin paint for high-stability connecting nut and coating process thereof |
Non-Patent Citations (5)
| Title |
|---|
| 何勤功等.《油田开发用高分子材料》.石油工业出版社,1990,第164-166页. * |
| 尹志刚.《有机化学》.河南科学技术出版社,2010,第170-180页. * |
| 张付利.《有机化学》.河南大学出版社,2018,第179-181页. * |
| 徐克勋等.《辽宁省化工产品手册》.辽宁科学技术出版社,1988,第512页. * |
| 王琛等.《聚合物改性方法与技术》.中国纺织出版社有限公司,2020,第96-97页. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115558366A (en) | 2023-01-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2633360C (en) | Electrical steel sheet having insulation coating and method for manufacturing same | |
| EP1947154B1 (en) | Polyfunctional epoxy resin coating composition containing rust-preventive pigment, coating film obtained therefrom, base coated with the coating film, and method of rust prevention | |
| US9683109B2 (en) | Self healing anti corrosive coatings and a process for the preparation thereof | |
| CN111073507B (en) | Water-based chromium-free zinc-aluminum anticorrosive paint and preparation method thereof | |
| CN115558366B (en) | Synthetic resin coating for high-stability connecting nut and coating process thereof | |
| EP0246566B1 (en) | An anti-corrosive paint composition | |
| JP4733643B2 (en) | Magnesium-rich coatings and coating systems | |
| Zhang et al. | Low-surface-free-energy GO/FSiAC coating with self-healing function for anticorrosion and antifouling applications | |
| CN110885617A (en) | Rust conversion coating and preparation method thereof | |
| Li et al. | Fabrication of acrylic acid modified graphene oxide (AGO)/acrylate composites and their synergistic mechanisms of anticorrosion and antifouling properties | |
| Mousaa et al. | Preparation of high performance coating films based on urethane acrylate oligomer and liquid silicone rubber for corrosion protection of mild steel using electron beam radiation | |
| CN114456683B (en) | Anti-corrosion finish paint and preparation method thereof | |
| NZ203795A (en) | Two component aluminium dust-containing coating | |
| CN114479660A (en) | Chromium-free zinc-aluminum-nickel coating composite product and application thereof | |
| EP2510061A2 (en) | Environmentally friendly protective coatings for substrates | |
| Naderi | Effect of coating composition on the anticorrosion performance of a silane sol–gel layer on mild steel | |
| CN110982428B (en) | Zinc-aluminum anticorrosive paint based on polysilazane | |
| CN106833335A (en) | A kind of utilization nano graphite flakes and the composite modified anticorrosive paint of rare earth oxide | |
| CN108047896B (en) | Double-component coating and preparation method and application thereof | |
| KR20220019109A (en) | Heat-resistant coating composition, heat-resistant coating film, substrate with heat-resistant coating film, and manufacturing method thereof | |
| CN108395805B (en) | Flexible ceramic heavy-duty anticorrosive paint and preparation method thereof | |
| CN112280470A (en) | Graphene-reinforced heat-resistant anticorrosive paint and preparation method thereof | |
| CN111621776B (en) | Composite passivation solution and preparation method and application thereof | |
| CN116162384A (en) | Zinc-rich anticorrosive paint for steel structure | |
| Thanh | Improvement of physical and thermal properties of polyvinyl butyral coating with nanosilica |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |