CN114410175A - High-wear-resistance coating for automotive interior parts and preparation method thereof - Google Patents
High-wear-resistance coating for automotive interior parts and preparation method thereof Download PDFInfo
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- CN114410175A CN114410175A CN202111510846.6A CN202111510846A CN114410175A CN 114410175 A CN114410175 A CN 114410175A CN 202111510846 A CN202111510846 A CN 202111510846A CN 114410175 A CN114410175 A CN 114410175A
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- 238000000576 coating method Methods 0.000 title claims abstract description 63
- 239000011248 coating agent Substances 0.000 title claims abstract description 62
- 238000002360 preparation method Methods 0.000 title abstract description 10
- 239000011347 resin Substances 0.000 claims abstract description 80
- 229920005989 resin Polymers 0.000 claims abstract description 80
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 29
- 239000002904 solvent Substances 0.000 claims abstract description 24
- 239000000049 pigment Substances 0.000 claims abstract description 21
- 230000000694 effects Effects 0.000 claims abstract description 20
- ZHPNWZCWUUJAJC-UHFFFAOYSA-N fluorosilicon Chemical compound [Si]F ZHPNWZCWUUJAJC-UHFFFAOYSA-N 0.000 claims abstract description 17
- 125000005442 diisocyanate group Chemical group 0.000 claims abstract description 14
- -1 aldehyde ketone Chemical class 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 10
- 238000003756 stirring Methods 0.000 claims description 45
- 239000003795 chemical substances by application Substances 0.000 claims description 26
- 238000001723 curing Methods 0.000 claims description 26
- 238000005299 abrasion Methods 0.000 claims description 11
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 claims description 9
- 238000000227 grinding Methods 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 9
- 239000000654 additive Substances 0.000 claims description 7
- 230000000996 additive effect Effects 0.000 claims description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 238000004448 titration Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000009826 distribution Methods 0.000 claims description 4
- 150000002576 ketones Chemical class 0.000 claims description 4
- 239000011259 mixed solution Substances 0.000 claims description 4
- 239000000243 solution Substances 0.000 claims description 4
- 229920002818 (Hydroxyethyl)methacrylate Polymers 0.000 claims description 3
- QTKPMCIBUROOGY-UHFFFAOYSA-N 2,2,2-trifluoroethyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCC(F)(F)F QTKPMCIBUROOGY-UHFFFAOYSA-N 0.000 claims description 3
- XDLMVUHYZWKMMD-UHFFFAOYSA-N 3-trimethoxysilylpropyl 2-methylprop-2-enoate Chemical compound CO[Si](OC)(OC)CCCOC(=O)C(C)=C XDLMVUHYZWKMMD-UHFFFAOYSA-N 0.000 claims description 3
- DXPPIEDUBFUSEZ-UHFFFAOYSA-N 6-methylheptyl prop-2-enoate Chemical compound CC(C)CCCCCOC(=O)C=C DXPPIEDUBFUSEZ-UHFFFAOYSA-N 0.000 claims description 3
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 claims description 3
- WOBHKFSMXKNTIM-UHFFFAOYSA-N Hydroxyethyl methacrylate Chemical compound CC(=C)C(=O)OCCO WOBHKFSMXKNTIM-UHFFFAOYSA-N 0.000 claims description 3
- 238000009833 condensation Methods 0.000 claims description 3
- 230000005494 condensation Effects 0.000 claims description 3
- 150000002148 esters Chemical class 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 229930195733 hydrocarbon Natural products 0.000 claims description 3
- 150000002430 hydrocarbons Chemical class 0.000 claims description 3
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 claims description 3
- 238000010992 reflux Methods 0.000 claims description 3
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 2
- 150000001298 alcohols Chemical class 0.000 claims description 2
- 150000002170 ethers Chemical class 0.000 claims description 2
- 238000009775 high-speed stirring Methods 0.000 claims description 2
- 239000003960 organic solvent Substances 0.000 claims description 2
- 230000009974 thixotropic effect Effects 0.000 claims 1
- 239000003973 paint Substances 0.000 abstract description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 19
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract description 14
- 229910052751 metal Inorganic materials 0.000 abstract description 11
- 239000002184 metal Substances 0.000 abstract description 11
- 239000000126 substance Substances 0.000 abstract description 10
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract description 7
- 239000011159 matrix material Substances 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 15
- 239000006185 dispersion Substances 0.000 description 12
- 239000004925 Acrylic resin Substances 0.000 description 11
- 229920000178 Acrylic resin Polymers 0.000 description 11
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 11
- 239000008199 coating composition Substances 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 8
- 239000004033 plastic Substances 0.000 description 7
- 229920003023 plastic Polymers 0.000 description 7
- 238000001914 filtration Methods 0.000 description 6
- 238000005507 spraying Methods 0.000 description 6
- 229920006942 ABS/PC Polymers 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 229910021419 crystalline silicon Inorganic materials 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- UAEPNZWRGJTJPN-UHFFFAOYSA-N methylcyclohexane Chemical compound CC1CCCCC1 UAEPNZWRGJTJPN-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 description 1
- ZNQVEEAIQZEUHB-UHFFFAOYSA-N 2-ethoxyethanol Chemical compound CCOCCO ZNQVEEAIQZEUHB-UHFFFAOYSA-N 0.000 description 1
- SYBYTAAJFKOIEJ-UHFFFAOYSA-N 3-Methylbutan-2-one Chemical compound CC(C)C(C)=O SYBYTAAJFKOIEJ-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 description 1
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000005456 alcohol based solvent Substances 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 239000008269 hand cream Substances 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-M hexanoate Chemical compound CCCCCC([O-])=O FUZZWVXGSFPDMH-UHFFFAOYSA-M 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000013035 low temperature curing Methods 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- GYNNXHKOJHMOHS-UHFFFAOYSA-N methyl-cycloheptane Natural products CC1CCCCCC1 GYNNXHKOJHMOHS-UHFFFAOYSA-N 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 150000003961 organosilicon compounds Chemical class 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000007870 radical polymerization initiator Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000000516 sunscreening agent Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D161/00—Coating compositions based on condensation polymers of aldehydes or ketones; Coating compositions based on derivatives of such polymers
- C09D161/02—Condensation polymers of aldehydes or ketones only
-
- 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
- C09D143/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing boron, silicon, phosphorus, selenium, tellurium, or a metal; Coating compositions based on derivatives of such polymers
- C09D143/04—Homopolymers or copolymers of monomers containing silicon
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
-
- 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
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0812—Aluminium
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention relates to a coating for automotive interior parts, in particular to a high-wear-resistance coating for automotive interior parts and a preparation method thereof, wherein the coating comprises a component A and a component B, and comprises the following components in parts by weight: the component A comprises: 2-20 parts of effect pigment; 10-60 parts of main resin; 3-30 parts of organic fluorine-silicon modified resin; 2-20 parts of a shake-change assistant; 0.5-10 parts of an auxiliary agent; 10-40 parts of a solvent; and B component: 2-20 parts of diisocyanate; 0.2-2 parts of an auxiliary agent; and 2-20 parts of a solvent. Compared with the prior art, the modified aldehyde ketone resin is used as the matrix, so that the adhesion between a paint film and a material can be effectively improved, and the prepared paint has good water resistance and chemical resistance. The modified aldehyde ketone main body resin has higher molecular weight, can effectively improve the Flip-Flop value of the silver powder, ensures that the silver powder has excellent arrangement effect, can improve the shielding force of the metal pigment, and can effectively improve the water resistance, alcohol resistance and high weather resistance of the coating.
Description
Technical Field
The invention relates to a coating for automotive interior parts, in particular to a high-wear-resistance coating for automotive interior parts and a preparation method thereof.
Background
At present, in the field of automobile interior decoration, automobile manufacturers are pursuing further improvement in comfort, safety and decorativeness of the interior space of the automobile, and are moving toward higher levels. However, the aging resistance of plastics itself to environment such as ultraviolet light is not ideal, and various defects are often generated on the surface during the process of processing and forming. It is therefore desirable to finish the surface of a plastic mold to impart a particular color or gloss to the plastic and to hide imperfections in the surface of the plastic so that it has a more attractive appearance. Meanwhile, the plastic can also play a role in protection, so that the plastic is prevented from being damaged by harmful factors such as high temperature, chemicals, alcohol solvents or hard substances.
The automobile interior part coating not only needs to have the basic properties of the common coating. Such as resistance to chemicals, good mechanical properties, and low gloss, weatherability, ambient or low temperature cure. But also other special properties such as high and low temperature change resistance; the design of the coating meets the requirement of environmental protection; and in order to meet the needs of users, automotive interior parts require that paint films of the coatings must have good abrasion resistance and scratch resistance. From the above points, it can be seen that: the coating has higher requirements on the mechanical property and the appearance of the automotive interior coating, and the environmental protection requirement on the automotive interior coating is increasingly strict along with the improvement of environmental protection regulations, so that the automotive interior coating faces greater examination.
The existing silver-plated or electrosilvering-simulated coating for automobile interior parts can generally make a strong appearance metallic feeling, but is limited by the characteristics of the used coating resin, the coating application property is limited greatly, the coating film is generally thin, and the mechanical properties of the paint film such as wear resistance and the like are poor.
Disclosure of Invention
The invention aims to solve at least one of the problems, and provides a high-wear-resistance coating for automotive upholsteries and a preparation method thereof, and the high-wear-resistance coating for the automotive upholsteries is prepared.
The purpose of the invention is realized by the following technical scheme:
the invention discloses a high-wear-resistance coating for automotive upholsteries, which comprises a component A and a component B, and comprises the following components in parts by weight:
the component A comprises:
and B component:
2-20 parts of diisocyanate;
0.2-2 parts of an auxiliary agent;
and 2-20 parts of a solvent.
Preferably, the high-abrasion-resistance coating comprises a component A and a component B, and comprises the following components in parts by weight:
the component A comprises:
and B component:
5-15 parts of diisocyanate;
0.5-2 parts of an auxiliary agent;
and 2-20 parts of a solvent.
Preferably, the effect pigment is an aluminum effect pigment selected from TOYOSHINE TS-408PM and TS-710PM of Toyo aluminum industries, Inc. The TS-710PM has larger particle size, the D50 particle size range is 8-12 mu m, the crystal luster is provided, the metal feeling is strong, the reflectivity is high, and the multi-angle reflection can be well carried out on incident light; the TS-408PM has a fine particle size, the D50 particle size range is 4-8 μm, the particle size is silk satin gloss, the metal feeling is strong, the refractive index is high, and wide-range scattering of incident light can be well performed. The coating and the light reflection film are matched for use, so that the covering power of the coating is excellent, the light reflection and refraction are combined, and the high metal texture of a paint film can be effectively improved.
Preferably, the main resin is a modified aldehyde ketone resin selected from SL-8S of Shanghai Aofen chemical Co., Ltd and BM-12 of Shanghai Oita chemical Co., Ltd. The modified aldehyde ketone resin is mainly constructed as special aldehyde ketone silver electroplating resin, the theoretical glass transition temperature is 90 ℃, and the hydroxyl value of the aldehyde ketone resin modified by the acrylic resin is about 1.0mg KOH/g. The modified aldehyde ketone resin has higher molecular weight, can effectively improve the Flip-Flop value (used for evaluating the brightness of a metal paint film) of the silver powder, enables the silver powder to have excellent arrangement effect, can improve the shielding force of a metal pigment, and can effectively improve the water resistance, alcohol resistance, high weather resistance and other properties of a coating.
Preferably, the organic fluorine-silicon modified resin is prepared by the following steps in parts by mass:
s1: dissolving 20 parts of trifluoroethyl methacrylate, 10 parts of hydroxyethyl methacrylate, 20 parts of isooctyl acrylate and 30 parts of ethyl acrylate in 150 parts of n-butyl ester, adopting nitrogen protection, and then heating to 80 ℃ to obtain a mixed solution;
s2: dissolving 20 parts of silane coupling agent KBM503 and 3 parts of azodiisobutyronitrile in 50 parts of methyl ethyl ketone, and uniformly mixing to obtain a titration solution;
s3: dripping the titration solution obtained in the step S2 into the mixed solution obtained in the step S1 in a 2-hour uniform titration manner, and carrying out condensation reflux reaction for 6 hours to obtain the organic fluorine-silicon modified resin;
the weight average molecular weight of the organic fluorine-silicon modified resin is about 42000, and the molecular weight distribution MWD is about 2.0. The organic fluorine-silicon modified resin takes acrylic resin as a main body, and organic silicon resin and organic fluorine resin are simultaneously blended into the same resin molecule. Can effectively improve the performances of water resistance, high weather resistance and the like of the coating, particularly can improve the application property of the coating and improve the wear resistance of a paint film.
Preferably, the shake-change assistant is selected from DISPARLON4200-100 of Japan Nanhua chemical industry Co. The shaking assistant, the effect pigment and other fillers can form a loose agglomeration structure, and can effectively prevent the pigment from settling so as to ensure the distribution uniformity and effective arrangement of the pigment in a coating film.
Preferably, the diisocyanate is selected from DESMODUR N3390 curing agents from bayer. The diisocyanates contain NCO-effective groups.
Preferably, the auxiliaries are selected from EFKA4310 and Additive TI from OMG Borchers.
Preferably, the solvent is an organic solvent selected from one or more of esters, ethers, ketones, alcohols and hydrocarbons. Specifically, the hydrocarbon may be methylcyclohexane, the alcohol may be ethanol, isopropanol, etc., the ester may be ethyl acetate, butyl acetate, etc., the ketone may be methyl butanone, methyl isobutyl ketone, etc., and the ether may be ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, etc.
The invention discloses a method for preparing the high-wear-resistance coating for the automotive upholstery, which comprises the following steps:
s1: uniformly stirring the effect pigment, the main resin, the organic fluorine-silicon modified resin and the auxiliary agent, then adding the solvent into the mixture, sequentially stirring at a low speed and a high speed, then grinding and dispersing the mixture until the fineness is less than 30 mu m, and then adding the shaking auxiliary agent to adjust the viscosity to 60-90s to obtain a component A;
s2: dissolving diisocyanate and an auxiliary agent in a solvent, and sequentially stirring at a low speed and a high speed to prepare a component B;
s3: mixing the component A and the component B according to the weight ratio of 100:25 to obtain the high wear-resistant coating.
Preferably, the rotation speed of the low-speed stirring is 600-800rpm, and the time is 20-30 min; the high-speed stirring speed is 800-1200rpm, and the time is 25-35 min.
Preferably, the high wear-resistant coating is uniformly mixed according to a specified weight ratio and then is subjected to spraying construction, so that a coating composition which has high metal texture, excellent water resistance and high weather resistance, and particularly can improve the application property of the coating and the wear resistance of a paint film can be obtained.
The organic fluorine-silicon modified acrylic resin selected by the invention can be independently selected as organic fluorine modified acrylic resin or organic silicon modified acrylic resin, and the effect of the two resins is better reflected by superposition. The fluorinated modified acrylic resin can reduce the critical surface tension of the acrylic resin, improve the hydrophobic and oleophobic properties of the acrylic resin, and effectively improve the water resistance and weather resistance of a paint film. Compared with the traditional acrylate homopolymer, the resin system modified by the organic fluorine silicon has obviously improved thermal property, mechanical property, surface property and optical property, has large reduction range of critical surface tension, and can greatly improve the viscosity resistance and stain resistance of the coating. Particularly, the C-Si bond and the C-F bond are introduced into the resin, so that the surface hardness of the resin is improved to a great extent, and the wear resistance of a paint film is greatly improved.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention selects the modified aldehyde ketone resin as the matrix film forming substance (main resin), can effectively improve the adhesive property between a paint film and a material, and the prepared paint composition product has good water resistance and chemical resistance effects of the paint film. The modified aldehyde ketone main body resin has higher molecular weight, can effectively improve the Flip-Flop value of the silver powder, enables the silver powder to have excellent arrangement effect, can improve the shielding force of the metal pigment, and can effectively improve the water resistance, alcohol resistance, high weather resistance and other properties of the coating.
2. The organic fluorine-silicon modified acrylic resin is prepared by self, can effectively improve the water resistance and weather resistance of a paint film, particularly introduces C-Si bonds and C-F bonds into the resin, and greatly improves the surface hardness of the resin, thereby greatly improving the wear resistance of the paint film.
3. The main resin selected by the invention is matched with the organic fluorine-silicon modified acrylic resin, so that the system has high resin content and proper pigment base material proportion while the system has high metal texture, the film thickness is easy to coat during construction, and the construction performance is good, thereby indirectly ensuring the water resistance, alcohol resistance, weather resistance, high wear resistance and other performances of the paint film under the condition of high film thickness.
4. The coating provided by the invention is simple in preparation process, common and easily available in raw materials, can be prepared by only stirring and grinding, has good performance, and has excellent film-forming physical properties such as adhesiveness, water resistance, heat resistance and high wear resistance to materials such as ABS, ABS/PC and PC which are commonly used for automotive upholsteries while a paint film has high metal texture due to the use of effect pigments. Therefore, the preparation method has wide construction convenience, and the prepared high-wear-resistance coating can effectively protect engineering plastics such as conventional decorative ABS, ABS/PC, PC and the like, can also enable the coating to obtain high metal texture and realize the metallization of plastic materials.
Detailed Description
The present invention is described in detail below with reference to specific examples, but the present invention is not limited thereto in any way.
The reagents used in the following examples are selected from the aforementioned products, and those not specifically described may be selected from conventional commercially available products available to those skilled in the art.
The preparation steps of the organic fluorine-silicon modified resin in the following examples are as follows (the parts of each substance in the steps are all parts by mass, and are converted into specific quality values according to actual demand in proportion):
adding 20 parts of trifluoroethyl methacrylate, 10 parts of hydroxyethyl methacrylate, 20 parts of isooctyl acrylate and 30 parts of ethyl acrylate into a four-neck flask, adding 150 parts of n-butyl ester serving as a solvent for dissolution, removing air in a reaction bottle by adopting nitrogen replacement, using the air as protective gas, and heating to 80 ℃; and adding 20 parts of organosilicon compound KBM503 made by Beacon chemical, 3 parts of azobisisobutyronitrile (as a free radical polymerization initiator) and 50 parts of methyl ethyl ketone solvent into a burette, uniformly mixing, uniformly titrating into a four-neck flask at constant speed for 2 hours, and carrying out condensation reflux reaction for 6 hours to obtain the organic fluorine-silicon modified acrylic resin.
The weight average molecular weight of the resulting resin was about 42000, and the molecular weight distribution MWD was about 2.0.
Example 1
The high-wear-resistance coating is prepared by combining a component A resin paint and a component B curing agent according to the weight ratio of 100:25, wherein the component A resin paint comprises the following components in parts by weight:
the component B curing agent comprises the following components in parts by weight:
N3390 | 10 portions of |
ADDITIVE TI | 0.5 portion |
Acetic acid n-butyl ester | 14.5 parts of |
Total up to | 25 portions of |
The high-wear-resistance coating of the embodiment is prepared by the following steps:
(1) adding effect pigment, main resin, auxiliary agent and organic fluorine-silicon modified resin into a dispersion tank according to the weight parts, uniformly stirring, then adding a solvent, stirring at a low speed of 600rpm for 30min, then stirring at a high speed of 1000rpm for 30min, then introducing into a sanding dispersion machine, grinding and dispersing until the fineness is below 30 mu m, adding a shaking auxiliary agent, controlling the viscosity within the range of 60-90s, and filtering to obtain the component A resin paint;
(2) adding diisocyanate resin containing NCO effective groups and an auxiliary agent into a related solvent according to the parts by weight, uniformly stirring, stirring at a low speed of 600rpm for 30min, and then stirring at a high speed of 1000rpm for 30min to prepare a component B curing agent;
(3) the coating composition 1 (sample 1) for automotive upholsteries, which has high metallic texture, water resistance, alcohol resistance, weather resistance, high wear resistance and the like, was prepared by mixing and spraying the resin paint of component a and the curing agent of component B at a predetermined weight ratio.
Example 2
The high-wear-resistance coating is prepared by combining a component A resin paint and a component B curing agent according to the weight ratio of 100:25, wherein the component A resin paint comprises the following components in parts by weight:
the component B curing agent comprises the following components in parts by weight:
N3390 | 8.3 parts of |
ADDITIVE TI | 0.5 portion |
Acetic acid n-butyl ester | 16.2 parts of |
Total up to | 25 portions of |
The high-wear-resistance coating of the embodiment is prepared by the following steps:
(1) adding the effect pigment, the main resin, the auxiliary agent and the organic fluorine-silicon modified resin into a dispersion tank according to the parts by weight, uniformly stirring, then adding the solvent, stirring at a low speed of 800rpm for 25min, then stirring at a high speed of 1000rpm for 30min, then introducing into a sanding dispersion machine, grinding and dispersing until the fineness is below 30 mu m, adding the shaking auxiliary agent, controlling the viscosity within the range of 60-90s, and filtering to obtain the component A resin paint;
(2) adding diisocyanate resin containing NCO effective groups and an auxiliary agent into a related solvent according to the parts by weight, uniformly stirring, stirring at a low speed of 600rpm for 25min, and then stirring at a high speed of 1000rpm for 30min to prepare a component B curing agent;
(3) the coating composition 2 (sample 2) for automotive upholsteries, which has high metallic texture, water resistance, alcohol resistance, weather resistance, high wear resistance and the like, was prepared by mixing and spraying the resin paint of component A and the curing agent of component B at a predetermined weight ratio.
Example 3
The high-wear-resistance coating is prepared by combining a component A resin paint and a component B curing agent according to the weight ratio of 100:25, wherein the component A resin paint comprises the following components in parts by weight:
the component B curing agent comprises the following components in parts by weight:
N3390 | 8.3 parts of |
ADDITIVE TI | 0.5 portion |
Acetic acid n-butyl ester | 16.2 parts of |
Total up to | 25 portions of |
The high-wear-resistance coating of the embodiment is prepared by the following steps:
(1) adding effect pigment, main resin, auxiliary agent and organic fluorine-silicon modified resin into a dispersion tank according to the weight parts, uniformly stirring, then adding a solvent, stirring at a low speed of 750rpm for 20min, then stirring at a high speed of 800rpm for 35min, then introducing into a sanding dispersion machine, grinding and dispersing until the fineness is below 30 mu m, adding a shaking auxiliary agent, controlling the viscosity within the range of 60-90s, and filtering to obtain the component A resin paint;
(2) adding diisocyanate resin containing NCO effective groups and an auxiliary agent into a related solvent according to the parts by weight, uniformly stirring, stirring at a low speed of 750rpm for 20min, and then stirring at a high speed of 800rpm for 35min to prepare a component B curing agent;
(3) the resin paint A and the curing agent B were mixed at a predetermined weight ratio and sprayed to prepare a coating composition 3 (sample 3) for automotive upholsteries, which had high metallic texture, water resistance, alcohol resistance, weather resistance, and high wear resistance.
Example 4
The high-wear-resistance coating is prepared by combining a component A resin paint and a component B curing agent according to the weight ratio of 100:25, wherein the component A resin paint comprises the following components in parts by weight:
the component B curing agent comprises the following components in parts by weight:
N3390 | 8.3 parts of |
ADDITIVE TI | 0.5 portion |
Acetic acid n-butyl ester | 16.2 parts of |
Total up to | 25 portions of |
The high-wear-resistance coating of the embodiment is prepared by the following steps:
(1) adding effect pigment, main resin, auxiliary agent and organic fluorine-silicon modified resin into a dispersion tank according to the weight parts, uniformly stirring, then adding a solvent, stirring at a low speed of 650rpm for 30min, then stirring at a high speed of 1200rpm for 25min, then introducing into a sanding dispersion machine, grinding and dispersing until the fineness is below 30 mu m, adding a shaking auxiliary agent, controlling the viscosity within the range of 60-90s, and filtering to obtain the component A resin paint;
(2) adding diisocyanate resin containing NCO effective groups and an auxiliary agent into a related solvent according to the parts by weight, uniformly stirring, stirring at a low speed of 650rpm for 30min, and then stirring at a high speed of 1200rpm for 25min to prepare a component B curing agent;
(3) the coating composition 4 (sample 4) for automotive upholsteries, which has high metallic texture, water resistance, alcohol resistance, weather resistance, high wear resistance and the like, was prepared by mixing and spraying the resin paint of component a and the curing agent of component B at a predetermined weight ratio.
Comparative example 1
The high-wear-resistance coating of the comparative example is formed by combining an A-component resin paint and a B-component curing agent according to the weight ratio of 100:25, wherein the A-component resin paint comprises the following components in parts by weight:
the component B curing agent comprises the following components in parts by weight:
N3390 | 8.3 parts of |
ADDITIVE TI | 0.5 portion |
Acetic acid n-butyl ester | 16.2 parts of |
Total up to | 25 portions of |
The high-wear-resistance coating of the comparative example is prepared by the following steps:
(1) adding effect pigment, main resin and auxiliary agent into a dispersion tank according to the weight parts, uniformly stirring, then adding a solvent, stirring at a low speed of 600rpm for 30min, stirring at a high speed of 1000rpm for 30min, then introducing into a sanding dispersion machine, grinding and dispersing to a fineness of below 30 micrometers, adding a shaking auxiliary agent, controlling the viscosity to be within a range of 60-90s, and filtering to obtain a component A resin paint;
(2) adding diisocyanate resin containing NCO effective groups and an auxiliary agent into a related solvent according to the parts by weight, uniformly stirring, stirring at a low speed of 600rpm for 30min, and then stirring at a high speed of 1000rpm for 30min to prepare a component B curing agent;
(3) the coating composition 5 (sample 5) for automotive upholsteries, which has high metallic texture, water resistance, alcohol resistance, weather resistance, high wear resistance and the like, was prepared by mixing and spraying the resin paint of component A and the curing agent of component B at a predetermined weight ratio.
Comparative example 2
The high-wear-resistance coating of the comparative example is formed by combining an A-component resin paint and a B-component curing agent according to the weight ratio of 100:25, wherein the A-component resin paint comprises the following components in parts by weight:
the component B curing agent comprises the following components in parts by weight:
the high-wear-resistance coating of the comparative example is prepared by the following steps:
(1) adding effect pigment, organic fluorine-silicon modified resin and an auxiliary agent into a dispersion tank according to the weight parts, uniformly stirring, then adding a solvent, stirring at a low speed of 600rpm for 30min, stirring at a high speed of 800rpm for 35min, then introducing into a sanding dispersion machine, grinding and dispersing to a fineness of less than 30 mu m, adding a shaking auxiliary agent, controlling the viscosity to be within a range of 60-90s, and filtering to obtain the component A resin paint;
(2) adding diisocyanate resin containing NCO effective groups and an auxiliary agent into a related solvent according to the parts by weight, uniformly stirring, stirring at a low speed of 600rpm for 30min, and then stirring at a high speed of 800rpm for 35min to prepare a component B curing agent;
(3) the resin paint A and the curing agent B were mixed at a predetermined weight ratio and sprayed to prepare a coating composition 6 (sample 6) for automotive upholsteries, which had high metallic texture, water resistance, alcohol resistance, weather resistance, and high wear resistance.
The coating compositions 1 to 6 (samples 1 to 6) for automotive upholsteries prepared in examples 1 to 4 and comparative examples 1 to 2 were simultaneously applied to ABS/PC materials by spraying, and the dry film coatings were tested for adhesion, moisture resistance, Taber abrasion resistance, dry cloth abrasion resistance and chemical resistance, and the results of the paint film property tests are shown in Table 1.
TABLE 1 film property test results
Each sample in table 1 was measured according to the method described in the following standard, and specific acceptance criteria can be referred to each specific standard:
adhesion force: GB9286-1998 standard test;
temperature and water resistance: NES M014120156.3.10 standard test;
heat-resistant cycle: GB/T1735 standard test;
gasoline resistance: GB/T1734 standard test;
moisture resistance: standard test for daily production NES M014120156.3.1;
taber abrasion resistance test: honda HES 0096Z TVA 9000 standard test;
dry cloth rubbing resistance: the TL-226-20063.12.3.4 standard test of the public automobile;
acid resistance: standard test for daily production NES M014120156.3.2;
alkali resistance: standard test for daily production NES M014120156.3.3;
sun cream resistance: the modern automobile MS-625-014.15 standard test of sun resistance;
and (3) resisting hand cream: the TL-226-2006PV3964 standard test of the public automobile;
alcohol resistance: the TL-226-20063.13 standard test of the public automobile.
As can be seen from Table 1, the coating compositions of examples 1-4 coated on ABS/PC material for automotive upholsteries all showed good material adhesion, resistance to hot water, moisture resistance, acid and alkali resistance, and abrasion resistance. The comprehensive performance of the thermosetting coating prepared in the example 2 in the preparation and detection processes is optimal, and the formula and the preparation conditions of the example 2 can be used as the optimal examples of the invention. In contrast, the samples obtained in the comparative examples have partial unqualified performance and belong to defective products.
The embodiments described above are described to facilitate an understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (10)
2. the highly abrasion resistant coating material for automotive interior parts according to claim 1, wherein said effect pigment is an aluminum effect pigment selected from TOYOSHINE TS-408PM and TS-710PM of Toyo aluminum industries, Ltd.
3. The high abrasion resistant coating according to claim 1, wherein said main resin is a modified aldehyde ketone resin selected from the group consisting of SL-8S of Shanghai Aofen chemical Co., Ltd and BM-12 of Shanghai Outa chemical Co., Ltd.
4. The high-wear-resistance coating for the automotive interior parts according to claim 1, wherein the organic fluorine-silicon modified resin is prepared by the following steps in parts by mass:
s1: dissolving 20 parts of trifluoroethyl methacrylate, 10 parts of hydroxyethyl methacrylate, 20 parts of isooctyl acrylate and 30 parts of ethyl acrylate in 150 parts of n-butyl ester, adopting nitrogen protection, and then heating to 80 ℃ to obtain a mixed solution;
s2: dissolving 20 parts of silane coupling agent KBM503 and 3 parts of azodiisobutyronitrile in 50 parts of methyl ethyl ketone, and uniformly mixing to obtain a titration solution;
s3: dripping the titration solution obtained in the step S2 into the mixed solution obtained in the step S1 in a 2-hour uniform titration manner, and carrying out condensation reflux reaction for 6 hours to obtain the organic fluorine-silicon modified resin;
the weight average molecular weight of the organic fluorine-silicon modified resin is 42000, and the molecular weight distribution is 2.0.
5. The highly abrasion-resistant coating material as claimed in claim 1, wherein the thixotropic auxiliary is selected from DISPARLON4200-100 of NAKAYOBULINO.
6. The highly abrasion resistant coating for automotive interiors according to claim 1, wherein said diisocyanate is selected from DESMODUR N3390 curing agent from Bayer corporation.
7. The high abrasion resistant coating according to claim 1, wherein said auxiliary agent is selected from the group consisting of EFKA4310 and Additive TI of OMG Borchers.
8. The high-wear-resistance coating for the automotive interior parts according to claim 1, wherein the solvent is an organic solvent and is one or more selected from esters, ethers, ketones, alcohols and hydrocarbons.
9. A method for preparing the high abrasion-resistant coating for automotive upholsteries according to any one of claims 1 to 8, comprising the steps of:
s1: uniformly stirring the effect pigment, the main resin, the organic fluorine-silicon modified resin and the auxiliary agent, then adding the solvent into the mixture, sequentially stirring at a low speed and a high speed, then grinding and dispersing the mixture until the fineness is less than 30 mu m, and then adding the shaking auxiliary agent to adjust the viscosity to 60-90s to obtain a component A;
s2: dissolving diisocyanate and an auxiliary agent in a solvent, and sequentially stirring at a low speed and a high speed to prepare a component B;
s3: mixing the component A and the component B according to the weight ratio of 100:25 to obtain the high wear-resistant coating.
10. The method for preparing the high wear-resistant coating for the automotive interior trim part according to claim 9, wherein the rotation speed of the low-speed stirring is 600-800rpm, and the time is 20-30 min; the high-speed stirring speed is 800-1200rpm, and the time is 25-35 min.
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