CN113278350A - Matte varnish and application thereof - Google Patents

Matte varnish and application thereof Download PDF

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Publication number
CN113278350A
CN113278350A CN202110401556.1A CN202110401556A CN113278350A CN 113278350 A CN113278350 A CN 113278350A CN 202110401556 A CN202110401556 A CN 202110401556A CN 113278350 A CN113278350 A CN 113278350A
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component
parts
matte
mass
varnish according
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CN113278350B (en
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陈新建
陈江扬
马红伟
盛旭茂
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SHANGHAI CARPOLY PAINT CO Ltd
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SHANGHAI CARPOLY PAINT CO Ltd
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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
    • C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04—Polyurethanes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/4009—Two or more macromolecular compounds not provided for in one single group of groups C08G18/42 - C08G18/64
    • C08G18/4081—Mixtures of compounds of group C08G18/64 with other macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/62—Polymers of compounds having carbon-to-carbon double bonds
    • C08G18/6216—Polymers of alpha-beta ethylenically unsaturated carboxylic acids or of derivatives thereof
    • C08G18/622—Polymers of esters of alpha-beta ethylenically unsaturated carboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/64—Macromolecular compounds not provided for by groups C08G18/42 - C08G18/63
    • C08G18/6484—Polysaccharides and derivatives thereof
    • 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
    • C09D7/20—Diluents or solvents
    • 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
    • C09D7/45—Anti-settling agents
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend

Abstract

The invention relates to a matte top-coat paint which is prepared from a raw material component A, a component B and a component C. The matte clean finish paint is used for the technical wood veneer automotive interior parts, has the properties of good adhesive force, good flexibility and resistance, good impact resistance, high hardness, good leveling property, about 3% gloss and the like, more importantly, has very comfortable touch, meets the special properties of protection, scratch resistance, transparency, matte uniformity, weather resistance and the like of the color of the technical wood veneer, can completely reach the quality of imported products, and further replaces the imported products.

Description

Matte varnish and application thereof
Technical Field
The invention relates to the field of coatings, in particular to a matte top-coat paint and application thereof.
Background
In the current automobile market, the automobile interior parts are generally made of technical wood veneers, and a decorative and protective coating is required to be made on the technical wood veneers. The coating not only has the performances of good adhesion, good flexibility, good impact resistance, high hardness, good leveling property, about 3% of gloss and the like, but also has the more important requirement of comfortable touch feeling, and has the special performances of ideal color protection, scratch resistance, transparency, matte uniformity, weather resistance and the like of technical veneers.
So-called touch, i.e. the paint film is soft and comfortable, rather than rigid or slippery; the protection of the color of the technical wood veneer is that the coating maintains the characteristic of no color change and no fading on the technical wood veneer for a long time.
However, the traditional acrylic matte top-coat paint has good adhesion, good flexibility, good impact resistance, high hardness, good leveling property and gloss of about 3 percent, but cannot touch a very comfortable touch feeling with hands, and has poor protection on the color of a technical wood veneer, poor evenness of the matte degree and poor transparency; the scratch resistance is not ideal, and the weather resistance is not ideal. In addition, the technical wood veneer is colored by adopting dye and is easy to fade, and the traditional paint cannot protect the technical wood veneer from fading. Therefore, the protection of the scientific wood veneer with good color is a big problem, and no products of the kind exist at present in China.
Therefore, it is desirable to find a coating that addresses the above drawbacks.
Disclosure of Invention
Based on the reasons, the invention mainly aims to provide the matte clear finish paint for the technical wood veneer automotive interior trim part, which not only has the performances of good adhesion, good flexibility and resistance, good impact resistance, high hardness, good leveling property, gloss of about 3% and the like, but also has very comfortable touch, meets the special performances of protection, scratch resistance, transparency, matte uniformity, weather resistance and the like of the color of the technical wood veneer, can completely reach the quality of imported products, and further replaces the imported products.
One object of the invention is to provide a matte top-coat paint.
A matte top-coat paint is characterized by being prepared from a raw material component A, a component B and a component C,
wherein the content of the first and second substances,
the component A comprises the following components in parts by weight:
Figure BDA0003020515010000011
Figure BDA0003020515010000021
the component B comprises the following components in parts by weight:
35-45 parts of diisocyanate trimer
5-15 parts of propylene glycol methyl ether acetate
35-55 parts of butyl acetate;
the component C comprises a solvent.
Further, the mass ratio of the component A to the component B to the component C is 1:0.25: 0.7-0.8.
Further, the cellulose acetate butyrate solution comprises the following components in parts by weight:
Figure BDA0003020515010000022
further, the anti-settling slurry comprises the following components in parts by weight:
65-75 parts of dimethylbenzene
25-35 parts of polyamide wax anti-settling slurry.
Further, the solvent is selected from one or more of xylene, propylene glycol methyl ether acetate, acetate esters and ketones.
Furthermore, the viscosity of the hydroxy acrylic resin is 4000-6000cps, the solid content is 49-51%, and the hydroxyl value is 65.5-66.5.
Furthermore, in the cellulose acetate butyrate, the content of an acetate group is 37.5-38.5%, the content of a butyrate group is 13-14%, the content of a hydroxyl group is 1.25-1.35%, and the viscosity is 7.5-7.7 poise.
Further, the air conditioner is provided with a fan,
the hand feeling auxiliary agent is organic silicon powder;
the wax powder is polyethylene wax.
Further, the air conditioner is provided with a fan,
the ultraviolet light absorber is 2- (2-hydroxy-5-methylphenyl) benzotriazole;
the dispersant is polyurethane;
the anti-settling slurry is polyamide wax;
the leveling agent is an organic silicon leveling agent;
the drier is an organic tin drier;
the defoaming agent is an organic silicon defoaming agent.
The invention also aims to provide application of the matte clear finish paint in the field of automotive interior.
The invention has the beneficial effects that:
in the component A, hydroxyl acrylic resin with good weather resistance and good extinction property and cellulose acetate butyrate solution are selected as main film forming materials, and the cellulose acetate butyrate is beneficial to orientation of matte powder and can also improve dryness; the ultraviolet absorber, the hand feeling agent, the wax powder, the matte powder, the drier and the anti-settling agent are used as functional materials, a proper solvent is selected to form a specific formula, the specific formula is matched with the diisocyanate curing agent in the component B and the solvent in the component C, and the formed coating is sprayed on a paint film formed on a technical wood-skin automobile interior trim part, and the coating has the advantages that:
(1) the paint has the properties of good adhesive force, good flexibility and resistance, good impact resistance, high hardness, good leveling property, about 3 percent of gloss and the like;
(2) the wood veneer has excellent touch feeling, good protection on the color of the scientific wood veneer, good scratch resistance, good transparency, good evenness of the matte degree, good weather resistance and other special properties, thereby completely achieving the quality of imported products and being capable of replacing the imported products.
Detailed Description
In order that the invention may be more fully understood, reference will now be made to the following description. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In the description of the examples of the present invention, all the components are commercially available materials unless otherwise specified.
In the embodiment of the present invention, the first and second substrates,
the hydroxyl acrylic resin is purchased from Shanghai Yuanbang chemical Co., Ltd, and is of YP 2050;
the dispersant is purchased from EFKA company and is under the trade name EFKA 4010;
the ultraviolet light absorber is 2- (2-hydroxy-5-methylphenyl) benzotriazole purchased from Ridiazuron company;
the hand feeling auxiliary agent is purchased from the Japan Meiji photo company and has the trademark of DSA 6;
wax powder was purchased from Lubrizol corporation under the designation 1400 SF;
the mute powder is purchased from Grace company and has the brand number ED 30;
the anti-settling slurry is purchased from Disparlon corporation and has a mark number of 6900-20X;
the butyl acetate cellulose solution is purchased from Istman company and has the brand number CAB 381-2;
the leveling agent is purchased from BYK company of Germany and has the brand number of BYK 333;
the drier is purchased from American gas company and has the mark number of T12;
the defoaming agent is purchased from BYK company of Germany and has the brand number of BYK 141;
hexamethylene diisocyanate trimer was purchased from Corsia corporation under the designation N3390.
Example 1
A matte top-coat paint is characterized by being prepared from a raw material component A, a component B and a component C,
wherein the content of the first and second substances,
the component A comprises the following components in parts by mass:
Figure BDA0003020515010000041
the cellulose acetate butyrate solution is prepared from the following raw materials in parts by mass:
Figure BDA0003020515010000051
the anti-settling slurry is prepared from the following raw materials in parts by mass:
70 portions of dimethylbenzene
30 parts of polyamide wax anti-settling slurry.
The component B comprises the following components in parts by mass:
hexamethylene diisocyanate trimer 38.9 parts
10 parts of propylene glycol methyl ether acetate
51.1 parts of butyl acetate.
The component C comprises the following components in parts by mass:
Figure BDA0003020515010000052
the mass ratio of the component B to the component C of the component A is 1:0.25: 0.7.
The preparation method of the component A comprises the following steps:
(1) according to the mass portion, hydroxyl acrylic resin, a dispersing agent and an ultraviolet absorber are put into a paint making cylinder, and the mixture is dispersed at a low speed of 600rpm for 5 min;
(2) slowly adding a hand feeling auxiliary agent, wax powder and matte powder into the mixture according to the parts by mass, and dispersing at a high speed of 1000rpm for 20min until the fineness is less than or equal to 30 mu m;
(3) slowly adding the anti-settling slurry, the cellulose acetate butyrate liquid, the organic silicon leveling agent, the drier, the defoaming agent, the cyclohexanone and the butyl acetate into the mixture according to the mass parts, dispersing at a low speed of 600rpm for 5min, stopping dispersing, and standing for 10min to obtain the component A.
The preparation method of the component B comprises the following steps:
(1) according to the mass parts, propylene glycol methyl ether acetate, butyl acetate and hexamethylene diisocyanate trimer are put into a special production cylinder for the curing agent, and are dispersed for 10min at a low speed of 200 rpm;
(2) stopping stirring, standing for 5min, sampling and detecting-NCO content and solid content, and obtaining the component B after qualification.
The preparation method of the component C comprises the following steps:
(1) adding dimethylbenzene, butyl acetate, cyclohexanone and propylene glycol monomethyl ether acetate into a special diluent production cylinder according to the mass parts, and stirring at a low speed of 200rpm for 10 min;
(2) stopping stirring, standing for 5min, sampling, and detecting chromatogram to obtain component C.
The preparation method of the matte clear finish paint comprises the following steps:
and uniformly mixing the component A, the component B and the component C according to the mass ratio to obtain a product.
Example 2
A matte top-coat paint is characterized by being prepared from a raw material component A, a component B and a component C,
wherein the content of the first and second substances,
the component A comprises the following components in parts by mass:
Figure BDA0003020515010000061
the cellulose acetate butyrate solution is prepared from the following raw materials in parts by mass:
Figure BDA0003020515010000062
the anti-settling slurry is prepared from the following raw materials in parts by mass:
70 portions of dimethylbenzene
30 parts of polyamide wax anti-settling slurry.
The component B comprises the following components in parts by mass:
hexamethylene diisocyanate trimer 38.9 parts
10 parts of propylene glycol methyl ether acetate
51.1 parts of butyl acetate.
The component C comprises the following components in parts by mass:
Figure BDA0003020515010000071
the mass ratio of the component A to the component B to the component C is 1:0.25: 0.8.
The preparation method of the component A comprises the following steps:
(1) according to the mass portion, hydroxyl acrylic resin, a dispersing agent and an ultraviolet absorber are put into a paint making cylinder, and the mixture is dispersed at a low speed of 800rpm for 10 min;
(2) slowly adding a hand feeling auxiliary agent, wax powder and matte powder into the mixture according to the parts by mass, and dispersing at a high speed of 1000rpm for 20min until the fineness is less than or equal to 30 mu m;
(3) slowly adding the anti-settling slurry, the cellulose acetate butyrate liquid, the organic silicon leveling agent, the drier, the defoaming agent, the cyclohexanone and the butyl acetate into the mixture according to the mass parts, dispersing at a low speed of 800rpm for 10min, stopping dispersing, and standing for 100min to obtain the component A.
The preparation method of the component B comprises the following steps:
(1) according to the mass parts, propylene glycol methyl ether acetate, butyl acetate and hexamethylene diisocyanate trimer are put into a special production cylinder for the curing agent, and are dispersed for 15min at a low speed of 400 rpm;
(2) stopping stirring, standing for 10min, sampling and detecting-NCO content and solid content, and obtaining the component B after qualification.
The preparation method of the component C comprises the following steps:
(1) adding dimethylbenzene, butyl acetate, cyclohexanone and propylene glycol monomethyl ether acetate into a special diluent production cylinder according to the mass parts, and stirring at a low speed of 400rpm for 15 min;
(2) stopping stirring, standing for 10min, sampling, detecting chromatogram, and obtaining the component C when the component C is qualified.
The preparation method of the matte clear finish paint comprises the following steps:
and uniformly mixing the component A, the component B and the component C according to the mass ratio to obtain a product.
Example 3
A matte top-coat paint is characterized by being prepared from a raw material component A, a component B and a component C,
wherein the content of the first and second substances,
the component A comprises the following components in parts by mass:
Figure BDA0003020515010000081
the cellulose acetate butyrate solution is prepared from the following raw materials in parts by mass:
Figure BDA0003020515010000082
the anti-settling slurry is prepared from the following raw materials in parts by mass:
70 portions of dimethylbenzene
30 parts of polyamide wax anti-settling slurry.
The component B comprises the following components in parts by mass:
hexamethylene diisocyanate trimer 38.9 parts
10 parts of propylene glycol methyl ether acetate
51.1 parts of butyl acetate.
The component C comprises the following components in parts by mass:
Figure BDA0003020515010000083
Figure BDA0003020515010000091
the mass ratio of the component A to the component B to the component C is 1:0.25: 0.75.
The preparation method of the component A comprises the following steps:
(1) according to the mass portion, hydroxyl acrylic resin, a dispersing agent and an ultraviolet absorber are put into a paint making cylinder, and the mixture is dispersed at a low speed of 600rpm for 5 min;
(2) slowly adding a hand feeling auxiliary agent, wax powder and matte powder into the mixture according to the parts by mass, and dispersing at a high speed of 1000rpm for 20min until the fineness is less than or equal to 30 mu m;
(3) slowly adding the anti-settling slurry, the cellulose acetate butyrate liquid, the organic silicon leveling agent, the drier, the defoaming agent, the cyclohexanone and the butyl acetate into the mixture according to the mass parts, dispersing at a low speed of 600rpm for 5min, stopping dispersing, and standing for 10min to obtain the component A.
The preparation method of the component B comprises the following steps:
(1) according to the mass parts, propylene glycol methyl ether acetate, butyl acetate and hexamethylene diisocyanate trimer are put into a special production cylinder for the curing agent, and are dispersed for 10min at a low speed of 200 rpm;
(2) stopping stirring, standing for 5min, sampling and detecting-NCO content and solid content, and obtaining the component B after qualification.
The preparation method of the component C comprises the following steps:
(1) adding dimethylbenzene, butyl acetate, cyclohexanone and propylene glycol monomethyl ether acetate into a special diluent production cylinder according to the mass parts, and stirring at a low speed of 200rpm for 10 min;
(2) stopping stirring, standing for 5min, sampling, and detecting chromatogram to obtain component C.
The preparation method of the matte clear finish paint comprises the following steps:
and uniformly mixing the component A, the component B and the component C according to the mass ratio to obtain a product.
Example 4
A matte top-coat paint is characterized by being prepared from a raw material component A, a component B and a component C,
wherein the content of the first and second substances,
the component A comprises the following components in parts by mass:
Figure BDA0003020515010000092
Figure BDA0003020515010000101
the cellulose acetate butyrate solution is prepared from the following raw materials in parts by mass:
Figure BDA0003020515010000102
the anti-settling slurry is prepared from the following raw materials in parts by mass:
70 portions of dimethylbenzene
30 parts of polyamide wax anti-settling slurry.
The component B comprises the following components in parts by mass:
hexamethylene diisocyanate trimer 38.9 parts
10 parts of propylene glycol methyl ether acetate
51.1 parts of butyl acetate.
The component C comprises the following components in parts by mass:
Figure BDA0003020515010000103
the mass ratio of the component A to the component B to the component C is 1:0.25: 0.72.
The preparation method of the component A comprises the following steps:
(1) according to the mass portion, hydroxyl acrylic resin, a dispersing agent and an ultraviolet absorber are put into a paint making cylinder, and the mixture is dispersed at a low speed of 500rpm for 7 min;
(2) slowly adding a hand feeling auxiliary agent, wax powder and matte powder into the mixture according to the parts by mass, and dispersing the mixture at a high speed of 1200rpm for 30min until the fineness is less than or equal to 30 mu m;
(3) slowly adding the anti-settling slurry, the cellulose acetate butyrate liquid, the organic silicon leveling agent, the drier, the defoaming agent, the cyclohexanone and the butyl acetate into the mixture according to the mass parts, dispersing at a low speed of 800rpm for 10min, stopping dispersing, and standing for 50min to obtain the component A.
The preparation method of the component B comprises the following steps:
(1) according to the mass parts, propylene glycol methyl ether acetate, butyl acetate and hexamethylene diisocyanate trimer are put into a special production cylinder for the curing agent, and are dispersed for 8min at a low speed of 300 rpm;
(2) stopping stirring, standing for 10min, sampling and detecting-NCO content and solid content, and obtaining the component B after qualification.
The preparation method of the component C comprises the following steps:
(1) adding dimethylbenzene, butyl acetate, cyclohexanone and propylene glycol monomethyl ether acetate into a special diluent production cylinder according to the mass parts, and stirring at a low speed of 400rpm for 10 min;
(2) stopping stirring, standing for 8min, sampling, and detecting chromatogram to obtain component C.
The preparation method of the matte clear finish paint comprises the following steps:
and uniformly mixing the component A, the component B and the component C according to the mass ratio to obtain a product.
Example 5
A matte top-coat paint is characterized by being prepared from a raw material component A, a component B and a component C,
wherein the content of the first and second substances,
the component A comprises the following components in parts by mass:
Figure BDA0003020515010000111
Figure BDA0003020515010000121
the cellulose acetate butyrate solution is prepared from the following raw materials in parts by mass:
Figure BDA0003020515010000122
the anti-settling slurry is prepared from the following raw materials in parts by mass:
70 portions of dimethylbenzene
30 parts of polyamide wax anti-settling slurry.
The component B comprises the following components in parts by mass:
hexamethylene diisocyanate trimer 38.9 parts
10 parts of propylene glycol methyl ether acetate
51.1 parts of butyl acetate.
The component C comprises the following components in parts by mass:
Figure BDA0003020515010000123
the mass ratio of the component A to the component B to the component C is 1:0.25: 0.7.
The preparation method of the component A comprises the following steps:
(1) according to the mass portion, hydroxyl acrylic resin, a dispersing agent and an ultraviolet absorber are put into a paint making cylinder, and the mixture is dispersed at a low speed of 500rpm for 7 min;
(2) slowly adding a hand feeling auxiliary agent, wax powder and matte powder into the mixture according to the parts by mass, and dispersing the mixture at a high speed of 1200rpm for 30min until the fineness is less than or equal to 30 mu m;
(3) slowly adding the anti-settling slurry, the cellulose acetate butyrate liquid, the organic silicon leveling agent, the drier, the defoaming agent, the cyclohexanone and the butyl acetate into the mixture according to the mass parts, dispersing at a low speed of 800rpm for 10min, stopping dispersing, and standing for 50min to obtain the component A.
The preparation method of the component B comprises the following steps:
(1) according to the mass parts, propylene glycol methyl ether acetate, butyl acetate and hexamethylene diisocyanate trimer are put into a special production cylinder for the curing agent, and are dispersed for 8min at a low speed of 300 rpm;
(2) stopping stirring, standing for 10min, sampling and detecting-NCO content and solid content, and obtaining the component B after qualification.
The preparation method of the component C comprises the following steps:
(1) adding dimethylbenzene, butyl acetate, cyclohexanone and propylene glycol monomethyl ether acetate into a special diluent production cylinder according to the mass parts, and stirring at a low speed of 400rpm for 10 min;
(2) stopping stirring, standing for 8min, sampling, and detecting chromatogram to obtain component C.
The preparation method of the matte clear finish paint comprises the following steps:
and uniformly mixing the component A, the component B and the component C according to the mass ratio to obtain a product.
Example 6
A matte top-coat paint is characterized by being prepared from a raw material component A, a component B and a component C,
wherein the content of the first and second substances,
the component A comprises the following components in parts by mass:
Figure BDA0003020515010000131
the cellulose acetate butyrate solution is prepared from the following raw materials in parts by mass:
Figure BDA0003020515010000132
Figure BDA0003020515010000141
the anti-settling slurry is prepared from the following raw materials in parts by mass:
70 portions of dimethylbenzene
30 parts of polyamide wax anti-settling slurry.
The component B comprises the following components in parts by mass:
hexamethylene diisocyanate trimer 38.9 parts
10 parts of propylene glycol methyl ether acetate
51.1 parts of butyl acetate.
The component C comprises the following components in parts by mass:
Figure BDA0003020515010000142
the mass ratio of the component A to the component B to the component C is 1:0.25: 0.7.
The preparation method of the component A comprises the following steps:
(1) according to the mass portion, hydroxyl acrylic resin, a dispersing agent and an ultraviolet absorber are put into a paint making cylinder, and the mixture is dispersed at a low speed of 500rpm for 7 min;
(2) slowly adding a hand feeling auxiliary agent, wax powder and matte powder into the mixture according to the parts by mass, and dispersing the mixture at a high speed of 1200rpm for 30min until the fineness is less than or equal to 30 mu m;
(3) slowly adding the anti-settling slurry, the cellulose acetate butyrate liquid, the organic silicon leveling agent, the drier, the defoaming agent, the cyclohexanone and the butyl acetate into the mixture according to the mass parts, dispersing at a low speed of 800rpm for 10min, stopping dispersing, and standing for 50min to obtain the component A.
The preparation method of the component B comprises the following steps:
(1) according to the mass parts, propylene glycol methyl ether acetate, butyl acetate and hexamethylene diisocyanate trimer are put into a special production cylinder for the curing agent, and are dispersed for 8min at a low speed of 300 rpm;
(2) stopping stirring, standing for 10min, sampling and detecting-NCO content and solid content, and obtaining the component B after qualification.
The preparation method of the component C comprises the following steps:
(1) adding dimethylbenzene, butyl acetate, cyclohexanone and propylene glycol monomethyl ether acetate into a special diluent production cylinder according to the mass parts, and stirring at a low speed of 400rpm for 10 min;
(2) stopping stirring, standing for 8min, sampling, and detecting chromatogram to obtain component C.
The preparation method of the matte clear finish paint comprises the following steps:
and uniformly mixing the component A, the component B and the component C according to the mass ratio to obtain a product.
Example 7
A matte top-coat paint is characterized by being prepared from a raw material component A, a component B and a component C,
wherein the content of the first and second substances,
the component A comprises the following components in parts by mass:
Figure BDA0003020515010000151
the cellulose acetate butyrate solution is prepared from the following raw materials in parts by mass:
Figure BDA0003020515010000152
the anti-settling slurry is prepared from the following raw materials in parts by mass:
70 portions of dimethylbenzene
30 parts of polyamide wax anti-settling slurry.
The component B comprises the following components in parts by mass:
hexamethylene diisocyanate trimer 38.9 parts
10 parts of propylene glycol methyl ether acetate
51.1 parts of butyl acetate.
The component C comprises the following components in parts by mass:
Figure BDA0003020515010000161
the mass ratio of the component A to the component B to the component C is 1:0.25: 0.8.
The preparation method of the component A comprises the following steps:
(1) according to the mass portion, hydroxyl acrylic resin, a dispersing agent and an ultraviolet absorber are put into a paint making cylinder, and the mixture is dispersed at a low speed of 500rpm for 7 min;
(2) slowly adding a hand feeling auxiliary agent, wax powder and matte powder into the mixture according to the parts by mass, and dispersing the mixture at a high speed of 1200rpm for 30min until the fineness is less than or equal to 30 mu m;
(3) slowly adding the anti-settling slurry, the cellulose acetate butyrate liquid, the organic silicon leveling agent, the drier, the defoaming agent, the cyclohexanone and the butyl acetate into the mixture according to the mass parts, dispersing at a low speed of 800rpm for 10min, stopping dispersing, and standing for 50min to obtain the component A.
The preparation method of the component B comprises the following steps:
(1) according to the mass parts, propylene glycol methyl ether acetate, butyl acetate and hexamethylene diisocyanate trimer are put into a special production cylinder for the curing agent, and are dispersed for 8min at a low speed of 300 rpm;
(2) stopping stirring, standing for 10min, sampling and detecting-NCO content and solid content, and obtaining the component B after qualification.
The preparation method of the component C comprises the following steps:
(1) adding dimethylbenzene, butyl acetate, cyclohexanone and propylene glycol monomethyl ether acetate into a special diluent production cylinder according to the mass parts, and stirring at a low speed of 400rpm for 10 min;
(2) stopping stirring, standing for 8min, sampling, and detecting chromatogram to obtain component C.
The preparation method of the matte clear finish paint comprises the following steps:
and uniformly mixing the component A, the component B and the component C according to the mass ratio to obtain a product.
Comparative example 1
The raw material types, raw material mass fractions and preparation methods of comparative example 1 and example 1 are the same, with the only difference that component a of comparative document 1 does not contain cellulose acetate butyrate.
Comparative example 2
The raw materials, the mass fractions of the raw materials and the preparation methods of the comparative example 1 and the example 1 are the same, and the only difference is that the component A of the comparative document 2 does not contain a hand feeling auxiliary agent.
Comparative example 3
The comparative example 1 is the same as example 1 in the kinds of raw materials, the mass fractions of the raw materials, and the preparation method, and the only difference is that the component a of the comparative document 3 does not contain an ultraviolet absorber.
Test example
The samples obtained in examples 1 to 7 and comparative examples 1 to 3 were applied to technical wood veneer automotive upholsteries.
The specific process comprises the following steps:
spraying an anti-UV agent on a molded scientific and technological veneer automotive interior part, drying for 1-2h, then spraying a sealing agent, drying for 24h, spraying matte clear finish, airing for about 20min at normal temperature, baking for 1h in an oven at 60 ℃, taking out, cooling to room temperature, and polishing;
spraying the matte varnish for the second time, airing at normal temperature for about 20min, baking in an oven at 60 ℃ for 1h, taking out, cooling to room temperature, and standing at 22 +/-2 ℃ for 24 h.
The following performance tests were then performed. The results of the performance tests and the performance criteria are shown in table 1.
TABLE 1 results of Performance test and execution standards of samples obtained in examples 1 to 7 and comparative examples 1 to 3
Figure BDA0003020515010000171
Figure BDA0003020515010000181
Figure BDA0003020515010000191
Figure BDA0003020515010000201
As can be seen from the above, examples 1 to 7 are significantly improved as compared with comparative examples 1 to 3.
The foregoing is considered as illustrative of the preferred embodiments of the invention and is not to be construed as limiting in any way. Those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention; meanwhile, any equivalent changes, modifications and evolutions of the above embodiments according to the essential technology of the present invention are within the scope of the present invention defined by the claims.

Claims (10)

1. A matte top-coat paint is characterized by being prepared from a raw material component A, a component B and a component C,
wherein the content of the first and second substances,
the component A comprises the following components in parts by weight:
Figure FDA0003020515000000011
the component B comprises the following components in parts by weight:
35-45 parts of hexamethylene diisocyanate trimer
5-15 parts of propylene glycol methyl ether acetate
35-55 parts of butyl acetate;
the component C comprises a solvent.
2. The matte varnish according to claim 1, wherein the mass ratio of the component A to the component B to the component C is 1:0.25: 0.7-0.8.
3. The matte varnish according to claim 1, wherein the cellulose acetate butyrate solution comprises the following components in parts by mass:
Figure FDA0003020515000000012
Figure FDA0003020515000000021
4. the matte varnish according to claim 1, wherein the anti-settling slurry comprises the following components in parts by weight:
65-75 parts of dimethylbenzene
25-35 parts of polyamide wax anti-settling slurry.
5. The matte varnish according to claim 1, wherein the solvent is selected from one or more of xylene, propylene glycol methyl ether acetate, acetates, ketones.
6. The matte varnish according to claim 1,
the viscosity of the hydroxy acrylic resin is 4000-6000cps, the solid content is 49-51%, and the hydroxyl value is 65.5-66.5.
7. The matte varnish according to claim 1, wherein the cellulose acetate butyrate has an acetate group content of 37.5-38.5%, a butyrate group content of 13-14%, a hydroxyl group content of 1.25-1.35%, and a viscosity of 7.5-7.7 poise.
8. The matte varnish according to claim 1,
the hand feeling auxiliary agent is organic silicon powder;
the wax powder is polyethylene wax.
9. The matte varnish according to claim 1,
the ultraviolet light absorber is 2- (2-hydroxy-5-methylphenyl) benzotriazole;
the dispersant is polyurethane;
the anti-settling slurry is polyamide wax;
the leveling agent is an organic silicon leveling agent;
the drier is an organic tin drier;
the defoaming agent is an organic silicon defoaming agent.
10. Use of a matte top-coat paint according to any one of claims 1 to 9 in the field of automotive interior.
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