WO2020073894A1

WO2020073894A1 - Coating composition and preparation method therefor, coating member and preparation method therefor, and home appliance

Info

Publication number: WO2020073894A1
Application number: PCT/CN2019/109986
Authority: WO
Inventors: 赵莉
Original assignee: 广东美的厨房电器制造有限公司; 美的集团股份有限公司
Priority date: 2018-10-08
Filing date: 2019-10-08
Publication date: 2020-04-16

Abstract

A coating composition. Preparation raw materials comprise polysilazane, polysiloxane, and a fluorine-modified antifouling agent. The preparation method for a coating composition comprises mixing polysilazane and polysiloxane to generate a polysilazane-polysiloxane copolymer, and adding a fluorine-modified antifouling agent to obtain the coating composition. A coating member obtained after coating the surface of a base with a coating composition can be applied to a home appliance.

Description

Coating composition and preparation method thereof, coated article and preparation method thereof, and household appliances

Technical field

The present application relates to the technical field of household appliances, in particular to a coating composition, a method for preparing the coating composition, a coated article made from the coating composition, a method for preparing the coated article, and application of the coated article Household appliances.

Background technique

In the field of micro-baking, it is usually necessary to form a coating on the surface of kitchen appliances. The material of the above coating is mainly: enamel (the enamel can be formed on the surface of the product through the enamel process), silicone, epoxy powder (spray In the form of powder, the epoxy powder is sprayed on the surface of the product), or silica sol + silicone hybrid coating. However, the above coating has the disadvantages of low hardness, poor adhesion, poor temperature resistance, difficulty in cleaning, and failure to achieve food contact safety levels.

Summary of the invention

The main purpose of the present application is to provide a coating composition, which aims to make the coating prepared by the coating composition have the advantages of high hardness, good adhesion, good temperature resistance, easy cleaning, and food contact safety level .

In order to solve the above technical problems, the raw materials for preparing the coating composition provided by the present application include polysilazane, polysiloxane, and fluorine-modified antifouling agent, and the polysilazane and polysiloxane undergo a copolymerization reaction A polysilazane-polysiloxane copolymer is formed, and the fluorine-modified antifouling agent is mixed with the polysilazane-polysiloxane copolymer.

Further, the range of the mass percentage of the polysilazane in the preparation raw material is 7-96.99%, the range of the mass percentage of the polysiloxane in the preparation raw material is 3-73%, and the fluorine The modified antifouling agent accounts for the mass percentage of the prepared raw material in the range of 0.01-20%.

Further, the fluorine-modified antifouling agent is selected from methyl perfluoroamyl ketone, 1-methyl-3-trifluoromethyl-2-pyrrolidone, 1H, 1H-perfluoro-1-tetradecyl alcohol , 1-fluoroheptane, trifluorofluorohexane-1-sulfonic acid potassium salt, perfluoro-n-pentane, [(4-fluorophenoxy) methyl] ethylene oxide, 2H-perfluoro-5, 8,11,14,17-pentamethyl-3,6,9,12,15,18-hexaoxaicosane, 2- (trifluoromethyl) -3-ethoxydodecanefluorohexane Alkane, decafluoro-4- (pentafluoroethyl) epoxyhexanesulfonic acid potassium salt, 1,1,1,2,2,3,4,5,5,6,6,6-dodecane- 3,4-bis (trifluoromethyl) hexane, perfluoroeicosane, 1H, 6H-perfluorohexane, 1,7-difluoroheptane, 1,1,1,2,2,3, 3,4,5,5,6,6,6-tridecanefluorohexane, 1,1,2,2,5,5,6,6-octafluorohexane, perfluoro-p-menthane, heptafluoropropane, Fluoroheptane, perfluoro (methyl decalin), perfluoropolyether, perfluoro-1-butanesulfonic acid, perfluoropentane, perfluoro (methylcyclohexane), perfluoro (2,2 , 3,3-tetramethylbutane), perfluoro-1-octane, perfluorohexane, N-perfluoro-n-decane, perfluoro-1,2-dimethylcyclohexane, perfluoro fifteen , Perfluorononane, perfluoro-n-butane, perfluorododecane, perfluorotetradecane, perfluoro-2,7-dimethyloctane, perfluorohexadecane, perfluoro-2,3, 5,6-Tetramethylcyclohexane, perfluorotridecane, perfluoromethylcyclopentane, perfluorodimethylcyclobutane, (perfluorohexyl) benzene, perfluoro- (1,3,5 -Trimethylbenzene), perfluorobutylethane, perfluorobutyl ether, perfluorotetracosane, perfluorohexylethane, perfluorotetraethylene glycol dimethyl ether, perfluoro-2-methyl Butane, perfluoroparamenthol, perfluorooctylethane, 3- (perfluorohexyl) propylene oxide, 3- (perfluorohexyl) propylene oxide, 3- (2-perfluorohexylethoxy) -1,2-epoxypropane, 3- (perfluoro-n-butane) -1,2-epoxypropane, 3- (perfluoro-n-octane) -1,2-epoxypropane, 1H, 1H-full Fluoro-1-tetradecane, 2H-perfluoro15-methyl-3,6-dioxanonane, 3- (perfluoro-5-methylhexyl) -1,2-epoxypropane, 1H- Perfluoropentane, 1- (perfluoro-n-hexyl) dodecane, 1- (perfluoro-n-octyl) tetradecane, 1H, 6H-perfluorohexane, 1- (perfluoro-n -Hexyl) decane, 1H-perfluoro-2,4,4, -trimethylpentane, 1H, 10H-perfluorodecane, 1H-perfluoro-2,6-dimethylheptane Alkane, 1-methyl-4- (perfluoroethyl) toluene, 2H-perfluoro (2-methylpentane), ethyl perfluorobutyl ether, 8-perfluorodecyloctane, perfluoroiso At least one of butane, perfluorobutyl methyl ether, perfluoropropylene oxide, 2-trifluoromethyl perfluoropentane, and 2H-3H-perfluoropentane.

Further, the structural formula of the polysilazane is:

Wherein R ₁ is hydrogen, alkane, cycloalkane, alkene, aryl, alkoxy, alkylsiloxy, or alkylamine group, R ₂ is hydrogen, alkane, cycloalkane, alkene, aryl , Alkoxy, alkylsiloxy, or alkylamino, R ₃ is hydrogen, alkane, cycloalkane, alkene, aryl, alkoxy, alkylsiloxy, or alkylamine.

Further, at least one of R ₁ and R ₂ is a hydrogen group or an alkene.

Further, the molecular weight of the polysilazane is 100-1000; and / or

The molecular weight of the polysiloxane is 100-1300.

Further, the structural formula of the polysiloxane is:

Wherein R ₄ is hydrogen, alkane, cycloalkane, alkene, aryl, alkoxy, or alkylsiloxy, R ₅ is hydrogen, alkane, cycloalkane, alkene, aryl, alkoxy , Or alkylsiloxy.

Further, the raw material for preparing the coating composition further includes a color material, and the fluorine-modified color material is mixed with the polysilazane-polysiloxane copolymer and the antifouling agent.

Further, the range of the mass percentage of the polysilazane in the preparation raw material is 7-50%, the range of the mass percentage of the polysiloxane in the preparation raw material is 3-40%, and the fluorine The modified antifouling agent accounts for 0.01% to 20% of the mass of the prepared raw material, and the colored material accounts for 0.01% to 5% of the prepared raw material.

Further, the color material is selected from white color material, yellow color material, orange color material, black color material, purple color material, brown color material, green color material, blue color material, gray color material, and red color material At least one.

Further, the white colorant is selected from at least one of antimony white, barium sulfate, zinc barium white, titanium white, and zinc white; and / or,

The yellow colorant is nickel antimony titanate and / or titanium chrome brown; and / or,

The orange pigment is zinc tin rutile; and / or,

The black colorant is selected from at least one of copper chrome black spinel, titanium black, manganese dioxide, mas black, ivory ink, and carbon black; and / or,

The purple pigment is cobalt phosphate; and / or,

The brown color material is titanium manganese brown and / or zinc iron chrome brown; and / or,

The green colorant is selected from at least one of cobalt green, malachite, and sea chlorite; and / or,

The blue colorant is selected from at least one of celestite, cobalt blue, Egyptian blue, Han blue, azurite, and yttrium indium manganese blue; and / or,

The gray color material is at least one of copper chrome black spinel, titanium black, manganese dioxide, mas black, ink purple, ivory ink, and carbon black and antimony white, barium sulfate, zinc barium white, titanium white , And a mixture of at least one of zinc white, or the gray colorant is at least one of copper chrome black spinel, titanium black, manganese dioxide, mas black, ink purple, ivory ink, and carbon black , A mixture of at least one of antimony white, barium sulfate, zinc barium white, titanium white, and zinc white, and at least one of burnt ochre, Indian red, and cobalt blue; and / or,

The red colorant is selected from at least one of calcined loess, burnt ocher, and Indian red.

Further, the raw material for preparing the coating composition further includes a solvent, and the solvent accounts for a mass percentage of the coating composition in the range of 10 to 66%. The solvent is selected from alkane solvents, ether solvents, and ketones. At least one of solvents and benzene derivative solvents.

Further, the raw material for preparing the coating composition further includes a catalyst, and the catalyst accounts for a mass percentage of the raw material in the range of 0.01 to 5%, and the catalyst is an amine catalyst and / or a metal catalyst.

Further, the amine catalyst is selected from one or more of aliphatic amines, alicyclic amines, alcohol amines, and aromatic amines, and the fatty amines are selected from diethylamine, triethylamine, and triethylene tetra At least one of amines; the alicyclic amine is selected from at least one of triethylenediamine, piperazine, piperidine, and morpholine; the alcohol amine is selected from N, N-dimethylethanolamine , Diisopropanolamine, and N, N-diethylethanolamine at least one; the aromatic amine is selected from aniline, o-phenylenediamine, benzidine, and N, N-dimethylaniline at least One kind.

Further, the metal-based catalyst is an organotin catalyst and / or a palladium-based catalyst, and the organotin catalyst is at least selected from the group consisting of dibutyltin dilaurate, stannous octoate, dimethyl tin, and triphenyl tin. One; the palladium catalyst is selected from at least one of carbon / palladium, palladium chloride, palladium propionate salt, palladium acetate salt, and triphenylphosphine palladium.

Further, the raw material for preparing the coating composition further includes a filler, and the filler accounts for a mass percentage of the raw material in the range of 1 to 50%. The filler is selected from silicon carbide, aluminum oxide, titanium oxide, and zinc oxide. , Magnesium oxide, aluminum hydroxide, white carbon black, attapulgite, kaolin, bentonite, glass microspheres, and ceramic microspheres.

Further, the raw material for preparing the coating composition further includes a catalyst and a filler. The catalyst accounts for a mass percentage of the coating composition in a range of 0.01 to 5%, and the filler accounts for a mass percentage of the coating composition. The range is 1-50%, and the mass percentage of the polysiloxane and polysilazane in the coating composition is 10% -80%.

The present application also provides a method for preparing a coating composition, including the following steps:

Provide preparation materials including polysilazane, polysiloxane, and fluorine-modified antifouling agent;

Mixing polysilazane and polysiloxane, copolymerization reaction of polysilazane and polysiloxane to produce polysilazane-polysiloxane copolymer;

A fluorine-modified antifouling agent is added to the polysilazane-polysiloxane copolymer to prepare the coating composition.

The present application also provides a coated article, the coated article including a substrate, and a coating layer formed on the surface of the substrate, the coating layer containing the coating composition.

The present application also provides a method for preparing a coated part, including the following steps:

Providing a substrate and the coating composition;

The coating composition is applied to the surface of the substrate to prepare the coated article.

The present application also provides a household appliance including the coating member.

The raw materials for preparing the coating composition of the technical solution of the present application include polysilazane, polysiloxane, and fluorine-modified antifouling agent. The polysilazane and polysiloxane will undergo a copolymerization reaction to form polysilazane Alkane-polysiloxane copolymer, the polysilazane-polysiloxane copolymer has the advantages of high hardness, good adhesion and good temperature resistance, so that the coating layer formed by the coating composition has high hardness and adhesion The advantages of good and good temperature resistance. The coating composition further contains a fluorine-modified antifouling agent mixed with the polysilazane-polysiloxane copolymer, and the fluorine-modified antifouling agent can make the coating formed by the coating composition The layer also has the advantage of being easy to clean. Since the polysilazane, polysiloxane, polysilazane-polysiloxane copolymer, and fluorine-modified antifouling agent are not toxic and harmful substances, the coating made from the coating composition Can achieve the advantages of food contact safety level.

detailed description

The following clearly and completely describes the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in this application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the scope of protection of this application.

In addition, the descriptions related to "first", "second", etc. in this application are for descriptive purposes only, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined with "first" and "second" may include at least one of the features either explicitly or implicitly. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary people in the art to achieve, when the combination of technical solutions conflicts with each other or cannot be realized, it should be considered that the combination of such technical solutions does not exist , Nor within the scope of protection required by this application.

The present application provides a coating composition.

Raw materials for preparing the coating composition include polysilazane, polysiloxane, and fluorine-modified antifouling agent, and the polysilazane and polysiloxane undergo a copolymerization reaction to form polysilazane-polysilicon Oxane copolymer, the fluorine-modified antifouling agent is mixed with polysilazane-polysiloxane copolymer.

The mass percentage of the polysilazane in the preparation raw material ranges from 7 to 96.99%, the mass percentage of the polysiloxane in the preparation raw material ranges from 3 to 73%, and the fluorine-modified The anti-fouling agent accounts for the mass percentage of the prepared raw material in the range of 0.01-20%.

In an embodiment of the present application, the mass percentage of the polysilazane in the preparation raw material ranges from 7 to 96.99%. Optionally, the mass percentage of the polysilazane in the preparation raw material ranges from 10 to 80%, more preferably from 15 to 70%, and further optionally from 20 to 50%.

In an embodiment of the present application, the mass percentage of the polysiloxane to the preparation raw material ranges from 3 to 73%. Optionally, the mass percentage of the polysiloxane to the preparation raw material ranges from 10 to 60%, more preferably from 15 to 50%, and further preferably from 20 to 40%.

In an embodiment of the present application, the fluorine-modified antifouling agent accounts for 0.01% to 20% of the mass percentage of the prepared raw material. Optionally, the range of the mass percentage of the fluorine-modified antifouling agent in the prepared raw material is 1-20%, more preferably 5-20%, and further 10-15%.

In the technical solution of the present application, the polysilazane accounts for 7% to 96.99% of the mass of the preparation raw material, the polysiloxane accounts for 3% to 73% of the mass of the preparation raw material, and the fluorine The modified antifouling agent accounts for the mass percentage of the prepared raw material in the range of 0.01 to 20%, and the polysilazane and polysiloxane at the above content can produce a better content of polysilazane-polysiloxane After the copolymer, the polysilazane-polysiloxane copolymer is mixed with the above-mentioned fluorine-modified antifouling agent, a coating composition with better performance can be prepared, so that the coating composition The coating has the advantages of high hardness, good adhesion, easy to clean, good temperature resistance, and food safety level.

The fluorine-modified antifouling agent is selected from methyl perfluoroamyl ketone, 1-methyl-3-trifluoromethyl-2-pyrrolidone, 1H, 1H-perfluoro-1-tetradecanol, 1- Fluoroheptane, trifluorofluorohexane-1-sulfonic acid potassium salt, perfluoro-n-pentane, [(4-fluorophenoxy) methyl] ethylene oxide, 2H-perfluoro-5,8,11 , 14,17-pentamethyl-3,6,9, 12,15,18-hexaoxaicosane, 2- (trifluoromethyl) -3-ethoxydodecanefluorohexane, deca Fluorine-4- (pentafluoroethyl) epoxyhexanesulfonate potassium salt, 1,1,1,2,2,3,4,5,5,6,6,6-dodecafluoro-3,4 -Di (trifluoromethyl) hexane, perfluoroeicosane, 1H, 6H-perfluorohexane, 1,7-difluoroheptane, 1,1,1,2,2,3,3,4 , 5,5,6,6,6-tridecanefluorohexane, 1,1,2,2,5,5,6,6-octafluorohexane, perfluorop-menthane, heptafluoropropane, perfluoroheptane , Perfluoro (methyl decahydronaphthalene), perfluoropolyether, perfluoro-1-butane sulfonic acid, perfluoropentane, perfluoro (methylcyclohexane), perfluoro (2, 2, 3, 3-tetramethylbutane), perfluoro-1-octane, perfluorohexane, N-perfluoro-n-decane, perfluoro-1,2-dimethylcyclohexane, perfluoropentadecane Perfluoronon , Perfluoro-n-butane, perfluorododecane, perfluorotetradecane, perfluoro-2,7-dimethyloctane, perfluorohexadecane, perfluoro-2,3,5,6-tetra Methylcyclohexane, perfluorotridecane, perfluoromethylcyclopentane, perfluorodimethylcyclobutane, (perfluorohexyl) benzene, perfluoro- (1,3,5-trimethylbenzene ), Perfluorobutylethane, perfluorobutyl ether, perfluorotetracosane, perfluorohexylethane, perfluorotetraethylene glycol dimethyl ether, perfluoro-2-methylbutane, perfluoro P-menthane, perfluorooctylethane, 3- (perfluorohexyl) propylene oxide, 3- (perfluorohexyl) propylene oxide, 3- (2-perfluorohexylethoxy) -1,2- Propylene oxide, 3- (perfluoro-n-butane) -1,2-propylene oxide, 3- (perfluoro-n-octane) -1,2-propylene oxide, 1H, 1H-perfluoro-1-dec Tetraxane, 2H-perfluoro15-methyl-3,6-dioxanonane, 3- (perfluoro-5-methylhexyl) -1,2-epoxypropane, 1H-perfluoropentane, 1- (perfluoro-n-hexyl) dodecane, 1- (perfluoro-n-octyl) tetradecane, 1H, 6H-perfluorohexane, 1- (perfluoro-n-hexyl) decane , 1H-perfluoro-2,4,4, -trimethylpentane, 1H, 10H-perfluorodecane, 1H-perfluoro-2,6-dimethylheptane, 1-methyl- 4- (perfluoroethyl) toluene, 2H-perfluoro (2-methylpentane), ethyl perfluorobutyl ether, 8-perfluorodecyloctane, perfluoroisobutane, perfluorobutylmethyl At least one of ether, perfluoropropylene oxide, 2-trifluoromethyl perfluoropentane, and 2H-3H-perfluoropentane.

In the technical solution of the present application, the coating composition contains a fluorine-modified antifouling agent, so that the coating prepared by the coating composition has the advantage of being easy to clean, and the above-mentioned fluorine-modified antifouling agents are all It is not a toxic and harmful substance, so that the coating composition can reach the food contact safety level.

It should be noted that the fluorine-modified antifouling agent can also be other substances that can achieve the same or similar functions, which is not limited in this application.

The structural formula of the polysilazane is:

The structural formula of the polysiloxane is:

In an embodiment of the present application, at least one of R ₁ and R ₂ is a hydrogen group or an alkene.

It is understandable that both the polysilazane and the polysiloxane are high temperature resistant materials.

It can be understood that R ₁ , R ₂ and R ₃ may be the same group or different groups, which can be adjusted according to actual needs.

It can be understood that R ₄ and R ₅ may be the same group or different groups, which can be adjusted according to actual needs.

It should be noted that R ₁ , R ₂ and R ₃ can also be other groups that can achieve the same or similar functions, which is not limited in this application; R ₄ and R ₅ can also be other groups that can achieve the same or similar functions This application does not limit this group.

In the technical solution of the present application, the polysilazane can undergo a copolymerization reaction with the polysiloxane to form the host resin of the coating composition, so that the coating made from the coating composition has hardness High, good adhesion, good temperature resistance, and the advantages of reaching food contact safety level.

The molecular weight of the polysilazane is 100-1000.

The molecular weight of the polysiloxane is 100-1300.

In an embodiment of the present application, the molecular weight of the polysilazane is 100, 200, 300, 400, 500, 600, 700, 800, 900 or 1000.

In an embodiment of the present application, the molecular weight of the polysilazane may be 100-700 or 100-300.

In an embodiment of the present application, the molecular weight of the polysiloxane is 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000, 1100, 1200, or 1300.

In an embodiment of the present application, the molecular weight of the polysiloxane may be 200-900 or 200-500.

The molecular weight of the polysilazane in the technical solution of the present application is 100-1000, the molecular weight of the polysiloxane is 100-1300, and the polysilazane with the molecular weight 100-1000 and the polysiloxane with the molecular weight 100-1300 are copolymerized. After the reaction, a polysilazane-polysiloxane copolymer can be formed. After the coating composition containing the polysilazane-polysiloxane copolymer is applied to the substrate to form a coating, the coating has a better Hardness, adhesion and temperature resistance.

The raw material for preparing the coating composition further includes a color material, and the fluorine-modified color material is mixed with the polysilazane-polysiloxane copolymer and the antifouling agent.

The raw material for preparing the coating composition of the technical solution of the present invention includes a color material, which can make the coating prepared by the coating composition also have a better appearance. At the same time, the polysilazane-polysiloxane copolymer, fluorine-modified antifouling agent and colorant are not toxic and harmful substances, so that the coating made from the coating composition also has food contact safety The advantages of level.

The mass percentage of the polysilazane in the preparation raw material ranges from 7 to 50%, the mass percentage of the polysiloxane in the preparation raw material ranges from 3 to 40%, and the fluorine-modified The anti-fouling agent accounts for 0.01% to 20% of the mass of the preparation raw material, and the colorant accounts for 0.01% to 5% of the preparation of the raw material.

In an embodiment of the present invention, the mass percentage of the polysilazane in the prepared raw material ranges from 7 to 50%. Optionally, the mass percentage of the polysilazane in the preparation raw material ranges from 10 to 45%, more optionally from 20 to 40%, and further optionally from 25 to 35%.

In an embodiment of the present invention, the mass percentage of the polysiloxane to the preparation raw material ranges from 3 to 40%. Optionally, the mass percentage of the polysiloxane to the preparation raw material ranges from 5 to 30%, more preferably from 10 to 25%, and further preferably from 15 to 25%.

In an embodiment of the present invention, the fluorine-modified antifouling agent accounts for 0.01% to 20% of the mass percentage of the prepared raw material. Optionally, the fluorine-modified antifouling agent accounts for 0.1% to 15% of the mass of the prepared raw material, more preferably 1 to 10%, and further preferably 5 to 10%.

In an embodiment of the invention, the color material accounts for the mass percentage of the prepared raw material in the range of 0.01 to 5%. Optionally, the range of the mass percentage of the color material in the prepared raw material is 0.1 to 5%, more preferably 1 to 5%, and further preferably 2 to 3%.

In the technical solution of the present invention, the polysilazane accounts for the mass percentage of the preparation raw material in the range of 7-50%, the polysiloxane accounts for the preparation raw material's mass percentage in the range of 3-40%, and the fluorine The modified antifouling agent accounts for the mass percentage of the prepared raw material in the range of 0.01-20%, the colorant accounts for the prepared raw material in the range of 0.01% to 5%, and the polysilazane at the above content And polysiloxane can produce a better content of polysilazane-polysiloxane copolymer, fluorine modified antifouling agent and coloring material and polysilazane-polysiloxane copolymer are mixed to prepare The coating composition with good performance makes the coating made from the coating composition not only have the advantages of high hardness, good adhesion, easy to clean, good temperature resistance, and to achieve food contact safety level, but also have a better appearance .

The colorant is selected from at least one of white colorant, yellow colorant, orange colorant, black colorant, purple colorant, brown colorant, green colorant, blue colorant, gray colorant, and red colorant Species.

The white colorant is selected from at least one of antimony white, barium sulfate, zinc barium white, titanium white, and zinc white; and / or,

The orange pigment is zinc tin rutile; and / or,

The purple pigment is cobalt phosphate; and / or,

The gray color material is at least one of copper chrome black spinel, titanium black, manganese dioxide, mas black, black purple, ivory ink, and carbon black and antimony white, barium sulfate, zinc barium white, titanium A mixture of at least one of white and zinc white, or the gray color is at least one of copper chrome black spinel, titanium black, manganese dioxide, mas black, ink purple, ivory ink, and carbon black , A mixture of at least one of antimony white, barium sulfate, zinc barium white, titanium white, and zinc white, and at least one of burnt ochre, Indian red, and cobalt blue; and / or,

The above-mentioned colorants in the technical solution of the present application can all reach the food contact safety level, so that after the colorant is added to the coating composition, the coating composition can also reach the food contact safety level.

Understandably, the color material can be selected according to the actual needs, so that the coating has a better appearance.

The raw material for preparing the coating composition further includes a solvent, and the solvent accounts for a mass percentage of the raw material in the range of 10 to 66%, optionally 15 to 50%, and more preferably 20 to 40%. Choose from 30 to 35%.

The solvent may be selected from at least one of alkane solvents, ether solvents, ketone solvents, and benzene derivative solvents.

The alkane solvent may be selected from at least one of n-hexane, n-octane, n-decane, chloroform, methylene chloride, dichloroethylene, and mineral oil.

The ether solvent may be at least one selected from diethyl ether, petroleum ether, and dibutyl ether.

The ketone solvent may be selected from at least one of acetone, methyl ethyl ketone, cyclohexanone, and isophorone.

The benzene derivative-based solvent is selected from at least one of toluene, m-xylene, p-xylene, o-xylene, and chlorobenzene.

It should be noted that other solvents that can dissolve the polysiloxane and polysilazane copolymer and the fluorine-modified antifouling agent can also be used as the solvent of the present application, which is not limited in this application.

The polysilazane-polysiloxane copolymer and fluorine-modified antifouling agent can be dissolved in a solvent, so that the coating composition can be more easily applied to the surface of the substrate, and has antifouling, Easy to clean effect.

The raw material for preparing the coating composition further includes a catalyst, and the mass percentage of the catalyst in the raw material for the preparation ranges from 0.01 to 5%, optionally from 0.1 to 5%, more preferably from 1 to 5%, and further Choose 2 ~ 3%.

The catalyst is an amine catalyst and / or a metal catalyst.

The amine catalyst may be selected from one or more of aliphatic amine, alicyclic amine, alcohol amine, and aromatic amine.

The fatty amine may be selected from at least one of diethylamine, triethylamine, and triethylenetetramine.

The alicyclic amine may be selected from at least one of triethylenediamine, piperazine, piperidine, and morpholine.

The alcohol amine may be selected from at least one of N, N-dimethylethanolamine, diisopropanolamine, and N, N-diethylethanolamine.

The aromatic amine is selected from at least one of aniline, o-phenylenediamine, benzidine, and N, N-dimethylaniline.

The metal-based catalyst may be an organic tin catalyst and / or a palladium-based catalyst.

The organotin catalyst may be selected from at least one of dibutyltin dilaurate, stannous octoate, dimethyl tin, and triphenyl tin.

The palladium catalyst may be selected from at least one of carbon / palladium, palladium chloride, palladium propionate salt, palladium acetate salt, and triphenylphosphorpalladium.

It should be noted that other catalysts with similar properties can also be used as the catalyst of the present application, which is not limited in this application.

The catalyst can accelerate the copolymerization reaction between polysilazane and polysiloxane, thereby generating the polysilazane-polysiloxane copolymer in a short time.

The raw material for preparing the coating composition further includes a filler, and the filler accounts for the mass percentage of the raw material in the range of 1-50%, optionally 5-40%, optionally 10-30%, and more optionally 15-25%.

The filler is selected from silicon carbide, alumina, titanium oxide, zinc oxide, magnesium oxide, aluminum hydroxide, white carbon (silica aerogel), attapulgite, kaolin, bentonite, glass microspheres, and ceramic micro At least one of the balls.

The particle size of the filler may be less than 3 microns, optionally less than 2 microns, and even more preferably 1 microns.

In an embodiment of the present application, the particle size of the filler ranges from 0.2 to 0.8 microns. Understandably, the particle size of the filler is 0.2 microns, 0.3 microns, 0.4 microns, 0.5 microns, 0.6 microns, 0.7 microns, or 0.8 microns.

It can be understood that when the particle size range of the filler is set to 0.2-0.8 microns, the filler can be uniformly dispersed in the coating composition, and the surface of the prepared coating is relatively smooth.

In another embodiment of the present application, the particle size of the filler ranges from 0.2 to 0.5 microns to obtain a smoother coating.

In an embodiment of the present application, a grinder may be used to grind the filler to reduce the particle size of the filler.

In another embodiment of the present application, the coating initial product may be ground to reduce the particle size of the filler in the coating composition.

In an embodiment of the present application, the filler can be uniformly dispersed in the coating composition.

In the technical solution of the present application, the filler is selected from silicon carbide, aluminum oxide, titanium oxide, zinc oxide, magnesium oxide, aluminum hydroxide, white carbon (silica aerogel), attapulgite, kaolin, bentonite, glass At least one of microspheres and ceramic microspheres to improve the hardness, adhesion and temperature resistance of the coating prepared from the coating composition.

It should be noted that other fillers with high temperature resistance can also be used as fillers in this application, which is not limited in this application.

It can be understood that the solvents, catalysts and fillers of the present application are also not toxic and harmful substances, so that the coating made from the coating composition also has the advantage of food contact safety.

In an embodiment of the present application, the raw materials for preparing the coating composition include: polysiloxane, polysilazane, fluorine-modified antifouling agent, filler, solvent, and catalyst. Wherein, the mass percentage of the polysiloxane and polysilazane in the preparation raw material ranges from 10% to 80%, and the fluorine modified antifouling agent in the mass percentage of the preparation raw material ranges from 0.01 to 20%, the filler accounts for 1% to 50% of the preparation raw material, the solvent accounts for 10% to 66% of the preparation raw material, and the catalyst accounts for the preparation raw material The range is 0.01 to 5%.

In yet another embodiment of the present application, the raw materials for preparing the coating composition include: polysiloxane, polysilazane, fluorine-modified antifouling agent, filler, solvent, and catalyst. Wherein, the mass percentage of the polysiloxane and polysilazane in the preparation raw material ranges from 10% to 60%, and the fluorine modified antifouling agent in the mass percentage of the preparation raw material ranges from 0.01 to 15%, the filler accounts for 1% to 50% of the preparation raw material, the solvent accounts for 10% to 66% of the preparation raw material, and the catalyst accounts for the preparation raw material The range is 0.01 to 5%.

In yet another embodiment of the present application, the raw materials for preparing the coating composition include: polysiloxane, polysilazane, fluorine-modified antifouling agent, filler, solvent, colorant, and catalyst. Wherein, the mass percentage of the polysiloxane and polysilazane in the preparation raw material ranges from 10% to 60%, and the fluorine modified antifouling agent in the mass percentage of the preparation raw material ranges from 0.01 to 15%, the color material accounts for 0.01% to 15% of the mass of the prepared raw material, the filler accounts for 1% to 50% of the mass of the prepared raw material, and the solvent accounts for the mass of the prepared raw material The mass percentage range is 10 to 66%, and the catalyst mass percentage of the prepared raw material ranges from 0.01 to 5%.

In yet another embodiment of the present application, the raw materials for preparing the coating composition include: polysiloxane, polysilazane, fluorine-modified antifouling agent, filler, solvent, colorant, and catalyst. Wherein, the mass percentage of the polysiloxane and polysilazane in the preparation raw material ranges from 10% to 60%, and the fluorine modified antifouling agent in the mass percentage of the preparation raw material ranges from 0.01 to 15%, the color material accounts for 0.01% to 5% of the mass of the preparation material, the filler accounts for 1% to 50% of the mass of the preparation material, and the solvent accounts for the mass of the preparation material The mass percentage range is 10 to 66%, and the catalyst mass percentage of the prepared raw material ranges from 0.01 to 5%.

Provide preparation materials including polysilazane, polysiloxane, and fluorine-modified antifouling agents;

Add a fluorine-modified antifouling agent to the polysilazane-polysiloxane copolymer, stir the fluorine-modified antifouling agent and the polysilazane-polysiloxane copolymer to make both Mix uniformly to prepare the coating composition.

In an embodiment of the present application, the mass percentage of the polysilazane in the preparation raw material ranges from 7 to 96.99%, and the mass percentage of the polysiloxane in the preparation raw material ranges from 3 to 73 %, The mass percentage of the fluorine-modified antifouling agent in the prepared raw material ranges from 0.01 to 20%.

In an embodiment of the present application, the polysiloxane and polysilazane can be placed in the reactor, and the polysiloxane and polysilazane can be stirred for the first time to make the polysiloxane and polysilazane The alkane is mixed evenly, and the polysiloxane and polysilazane will undergo a copolymerization reaction to form a polysiloxane-polysilazane copolymer.

In an implementation of the present application, the stirring rate of the first stirring process is 100-800 rpm, optionally 200-600 rpm, and more preferably 400-500 rpm.

It can be understood that the copolymerization reaction time may be 10 seconds to 50 minutes, and the copolymerization reaction time may be adjusted according to actual production needs.

It should be noted that the stirring rate of the first stirring process and the time of the copolymerization reaction can also be other values, which is not limited in this application.

The raw materials for preparing the coating composition of the technical solution of the present application include polysilazane, polysiloxane, and fluorine-modified antifouling agent, and the mass percentage of the polysilazane in the preparation raw material ranges from 7 to 96.99%, the mass percentage of the polysiloxane in the preparation raw material ranges from 3 to 73%, and the fluorine modified antifouling agent in the mass percentage of the preparation raw material ranges from 0.01 to 20%. The polysilazane and polysiloxane will undergo a copolymerization reaction to form a polysilazane-polysiloxane copolymer. The polysilazane-polysiloxane copolymer has high hardness, good adhesion and good temperature resistance The advantages of the coating make the coating formed from the coating composition have the advantages of high hardness, good adhesion and good temperature resistance. The coating composition further contains a fluorine-modified antifouling agent mixed with the polysilazane-polysiloxane copolymer, and the fluorine-modified antifouling agent can make the coating formed by the coating composition The layer also has the advantage of being easy to clean. Since the polysilazane, polysiloxane, polysilazane-polysiloxane copolymer, and fluorine-modified antifouling agent are not toxic and harmful substances, the coating made from the coating composition Can achieve the advantages of food contact safety level.

After mixing polysilazane and polysiloxane, the method for preparing the coating composition further includes the step of adding a catalyst to the polysilazane and polysiloxane, wherein the catalyst accounts for The mass percentage ranges from 0.01 to 5%, optionally from 0.1 to 5%, more preferably from 1 to 5%, and further from 2 to 3%.

The catalyst is an amine catalyst and / or a metal catalyst.

Understandably, after the catalyst is added to the polysilazane and the polysiloxane, the second stirring treatment is performed to make the polysilazane, the polysiloxane and the catalyst uniformly mixed.

In an embodiment of the present application, the stirring rate of the second stirring process may be 1000-2000 rpm, may be 1200-1800 rpm, and may be 1500-1600 rpm.

In an embodiment of the present application, the time of the second stirring treatment may be 10 seconds to 50 minutes, optionally 5 to 15 minutes, and more optionally 8 to 12 minutes.

It should be noted that the stirring rate of the second stirring process and the time of the second stirring process may also be other values, which is not limited in this application.

In the technical solution of the present application, a catalyst may be added to the polysilazane and polysiloxane to promote the copolymerization reaction of the polysiloxane and the polysilazane to form the host resin required by the application, namely polysiloxane Alkane-polysilazane copolymer.

After generating the polysilazane-polysiloxane copolymer, and before preparing the coating composition, the method for preparing the coating composition further includes: adding a solvent to the polysilazane-polysiloxane copolymer step. The mass percentage of the solvent to the prepared raw material ranges from 10 to 66%, optionally from 15 to 50%, more preferably from 20 to 40%, and further from 30 to 35%.

In the technical solution of the present application, the polysilazane-polysiloxane copolymer and the fluorine-modified antifouling agent can be dissolved in a solvent, so that the coating composition can be more easily applied to the surface of the substrate .

After the polysilazane-polysiloxane copolymer is formed, and before the coating composition is prepared, the method for preparing the coating composition further includes: adding a filler to the polysilazane-polysiloxane copolymer step.

The range of the mass percentage of the filler in the prepared raw material is 1-50%, optionally 5-40%, optionally 10-30%, and more optionally 15-25%.

The filler may be selected from at least one of silicon carbide, aluminum oxide, titanium oxide, zinc oxide, magnesium oxide, aluminum hydroxide, white carbon, attapulgite, kaolin, bentonite, glass microspheres, and ceramic microspheres.

In an embodiment of the present application, after adding a solvent, a filler and a fluorine-modified antifouling agent to the polysilazane-polysiloxane copolymer, it may be subjected to a third stirring treatment to make the polysilazane The alkane-polysiloxane copolymer, solvent and filler are mixed evenly.

Understandably, the solvent, fluorine-modified antifouling agent and fluorine-modified antifouling agent can be added to the polysilazane-polysiloxane copolymer first, and then the filler can be added for the third time. Stir treatment. It is also possible to add a solvent, a filler and a fluorine-modified antifouling agent to the polysilazane-polysiloxane copolymer at the same time, and perform the third stirring treatment on it. It is also possible to add a solvent to the polysilazane-polysiloxane copolymer first, and then add a filler and a fluorine-modified antifouling agent to perform a third stirring treatment.

The stirring rate of the third stirring treatment may be 100-3000 rpm, optionally 500-2000 rpm, and more preferably 1000-1500 rpm.

In an embodiment of the present application, the time of the third stirring treatment may be 2-20 minutes, optionally 5-15 minutes, and more optionally 8-12 minutes.

It should be noted that the stirring rate of the third stirring process and the time of the third stirring process may also be other values, which is not limited in this application.

In another embodiment of the present method, the particle size of the filler is in the range of 0.2-0.5 microns to obtain a smoother coating.

In an embodiment of the present application, the filler may be ground by a grinder to reduce the particle size of the filler, and then the filler after grinding treatment is added to the polysilazane-polysiloxane copolymer.

In another embodiment of the present application, a filler with a larger particle size can be directly added to the polysilazane-polysiloxane copolymer, and then the coating composition is subjected to grinding treatment to reduce the coating composition The particle size of the filler.

The grinding time may be 30-60 minutes, optionally 40-50 minutes. The grinding time can be adjusted according to actual needs to obtain fillers with corresponding particle sizes.

After the polysilazane-polysiloxane copolymer is generated, before the coating composition is prepared, the method for preparing the coating composition further includes: adding a colorant to the polysilazane-polysiloxane copolymer A step of. The mass percentage of the color material in the prepared raw material ranges from 0.01 to 15%, from 1 to 15%, more optionally from 5 to 15%, and further from 10 to 15%.

In the technical solution of the present application, after adding a colorant to the polysilazane-polysiloxane copolymer, the coating prepared by the coating composition can have a colorful appearance.

It should also be noted that in the preparation method of the coating composition, the order of addition of each component and the grinding method can be adjusted and selected according to actual needs, and the above-mentioned copolymerization reaction time, stirring speed, stirring time, grinding time Etc. are only typical values in the preparation process and can be adjusted according to actual needs.

Understandably, the coating composition may be ground to reduce the particle size of each component.

The present application also provides a coated article including a substrate and a coating layer formed on the surface of the substrate, the coating composition containing the coating composition.

Understandably, the coating composition may be applied to the surface of the substrate to form the coating.

Understandably, the coating made from the coating composition has a thermal weight loss of less than 5% in an oxygen environment at 500 ° C, indicating that the coating has very excellent heat resistance.

Please refer to the above embodiments for the composition, proportion, preparation method, etc. of the coating composition. Since this coating article adopts all the technical solutions of all the above embodiments, it has at least all of the technical solutions of the above embodiments The beneficial effects will not be repeated here.

The thickness of the coating is in the range of 1 to 100 microns, optionally 5 to 60 microns, more preferably 10 to 50 microns, and further preferably 20 to 30 microns.

It is understandable that the thickness of the coating can be adjusted according to actual needs.

The thickness of the coating may be 1 micrometer, 2 micrometers, 5 micrometers, 10 micrometers, 20 micrometers, 50 micrometers, or 100 micrometers.

In the technical solution of the present application, the thickness of the coating may range from 1 to 100 micrometers. After the coating of the above thickness is formed on the surface of the substrate, the coating can effectively protect the substrate, so that the coated part has It has the advantages of high hardness, high temperature resistance, easy cleaning, good adhesion, and food safety level.

Providing a substrate and the coating composition;

Understandably, the coating composition may be subjected to grinding treatment to reduce agglomeration, and then the coating composition after grinding treatment may be applied to the surface of the substrate.

Understandably, when the coating composition is applied to the surface of the substrate, the substrate is subjected to a heat treatment, and the temperature of the heat treatment is lower than 300 ° C, optionally 100 ° C to 280 ° C, and more optionally 120 to 150 ℃, to cure the coating composition on the surface of the substrate to form a coating. The thickness of the coating can range from 1 to 100 microns.

In an embodiment of the present application, the substrate may be pre-treated, and the pre-treatment may be degreasing, cleaning, and drying to clean the surface of the substrate and improve the adhesion of the coating to the surface of the substrate.

In the technical solution of the present application, the coating composition can be directly applied to the surface of the substrate, and the coated part can be prepared after the coating composition is cured, so that the method for preparing the coated part of the present application has a simple molding process The advantages. Moreover, the temperature of the curing process is lower than 300 ° C. Compared with the technical solution of high-temperature curing in the prior art, the method for preparing a coated article of the present application also has the advantage of low energy consumption.

Understandably, since the coating has better adhesion, no pretreatment such as sanding of the substrate is required, which reduces the process difficulty of the method for preparing the coated part, and compared with the prior art The technical solution for sanding treatment of the substrate, and the method for preparing the coated part of the present application also has the advantages of environmental protection.

The household appliance may be a microwave oven, an induction cooker, an oven, a bread machine, a pasta machine, a cooker hood, an air explosion pan, a cake stall, a humidifier, an electric kettle, a hair dryer, a juicer, a pressure cooker, a rice cooker, a water heater, a computer, Electric fan, electric frying pan, soy milk maker, air conditioner, speaker, stove, or refrigerator, etc.

In an embodiment of the present application, the coating member may be a housing of a household appliance. Specifically, the coating member may be an outer shell or an inner shell of a home appliance.

In a specific embodiment of the present application, when the household appliance is a heating appliance such as a microwave oven, an air explosion pan, or an oven, the coating member may be an inner cavity or a heating plate of the microwave oven or oven.

For the specific structure of the household appliance, please refer to the above-mentioned embodiments. Since this household appliance adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments. Repeat.

It is understandable that the raw materials for the preparation of the coating composition are not substances restricted or prohibited by domestic and foreign regulations, and neither during the preparation of the coating composition nor during the preparation of the coated part Harmful substances are produced, so that the coating composition, coating, coated parts and electronic devices have the advantages of safety and environmental protection.

The following are some examples of the preparation method of the coating composition of the present application:

Example 1

The preparation method of the coating composition includes the following steps:

Provide preparation materials, the preparation materials include:

Polysilazane, R ₁ of the polysilazane is a hydrogen group, R ₂ is a hydrogen group, and R ₃ is a hydrogen group, the polysilazane accounts for 40% of the mass percentage of the prepared raw material,

Polysiloxane, wherein R ₄ of the polysiloxane is a hydrogen group and R ₅ is an alkene, and the range of the mass percentage of the polysiloxane in the preparation raw material is 40%;

Perfluoro-n-pentane, which accounts for 20% of the mass percentage of the prepared raw material.

Place polysilazane and polysiloxane in the reactor, mix polysilazane and polysiloxane at 350 rpm, the copolymerization reaction between polysiloxane and polysilazane generates poly Siloxane-polysilazane copolymer; and

Perfluoro-n-pentane was added to the polysiloxane-polysilazane copolymer, and the mixture was stirred at a speed of 2,000 rpm to obtain a coating composition.

Example 2

The preparation method of the coating composition includes the following steps:

Provide preparation materials, the preparation materials include:

Polysilazane, R ₁ of the polysilazane is an aryl group, R ₂ is a hydrogen group, R ₃ is an alkylamine group, and the polysilazane accounts for 35% of the mass percentage of the prepared raw material ,

Polysiloxane, wherein R ₄ of the polysiloxane is cycloalkane and R ₅ is an alkylsiloxy group, and the range of the mass percentage of the polysiloxane in the preparation raw material is 20%;

2H-perfluoro-5,8,11,14,17-pentamethyl-3,6,9,12,15,18-hexaoxaicosane, which accounts for the mass percentage range of the prepared raw materials 12%;

Dibutyl ether, which accounts for 20% of the mass percentage of the prepared raw material;

Cyclohexanone, which accounts for 13% of the mass percentage of the prepared raw material.

Place polysilazane and polysiloxane in the reactor, mix polysilazane and polysiloxane at a speed of 550 rpm, the copolymerization reaction between polysiloxane and polysilazane generates poly Siloxane-polysilazane copolymer; and

Add dibutyl ether, cyclohexanone, and 2H-perfluoro-5,8,11,14,17-pentamethyl-3,6,9 to the polysiloxane-polysilazane copolymer 12,15,18-Hexaoxacosane was stirred at a speed of 2000 rpm to obtain a coating composition.

Example 3

The preparation method of the coating composition includes the following steps:

Provide preparation materials, the preparation materials include:

Polysilazane, wherein R ₁ of the polysilazane is an alkene, R ₂ is an alkylsiloxane, and R ₃ is an alkane, and the polysilazane accounts for 33% of the mass of the prepared raw material. %,

Polysiloxane, wherein R ₄ of the polysiloxane is an alkane and R ₅ is an alkene, and the polysiloxane accounts for 17% of the mass percentage of the prepared raw material;

1,1,1,2,2,3,4,5,5,6,6,6-dodecafluoro-3,4-bis (trifluoromethyl) hexane, which accounts for the quality of the raw materials for preparation The percentage range is 13%;

Toluene, which accounts for 10% of the mass percentage of the prepared raw material;

Isophorone, which accounts for 4% of the mass percentage of the prepared raw material;

Alumina, which accounts for 10% of the mass percentage of the prepared raw material, and the particle size of the alumina is 2.6 to 3.3 microns;

Silicon carbide, which accounts for 10% of the mass percentage of the prepared raw materials, and the particle size of the silicon carbide ranges from 2.5 to 3.6 microns;

Dimethyl tin, which accounts for 3% of the mass percentage of the prepared raw material.

Place the polysilazane and polysiloxane in the reactor, and mix the polysilazane and polysiloxane at 350 rpm;

Add dimethyl tin to the polysiloxane and polysilazane and stir at 1900 rpm, dimethyl tin can promote the copolymerization reaction between polysiloxane and polysilazane, Generate polysiloxane-polysilazane copolymer;

To the polysiloxane-polysilazane copolymer, toluene, isophorone and 1,1,1,2,2,3,4,5,5,6,6,6-dodecane are added -After adding 3,4-bis (trifluoromethyl) hexane, alumina, and silicon carbide are added, and the mixture is stirred at a speed of 2800 rpm to obtain the initial coating product; and

The primary coating product is subjected to grinding treatment so that the particle size of alumina and silicon carbide ranges from 0.21 to 0.45 microns to obtain a coating composition.

Example 4

The preparation method of the coating composition includes the following steps:

Provide preparation materials, the preparation materials include:

Polysilazane, R ₁ of the polysilazane is a hydrogen group, R ₂ is a cycloalkane, and R ₃ is a hydrogen group, and the polysilazane accounts for 30% of the mass percentage of the prepared raw material,

Polysiloxane, wherein R ₄ of the polysiloxane is an alkylamine group and R ₅ is an alkoxy group, and the range of the mass percentage of the polysiloxane in the preparation raw material is 15%;

1,1,1,2,2,3,3,4,5,5,6,6,6-tridecanefluorohexane, which accounts for 15% of the mass percentage of the prepared raw materials;

O-xylene, which accounts for 6% of the mass percentage of the prepared raw material;

Petroleum ether, which accounts for the mass percentage of the prepared raw material in the range of 3%;

Alumina, which accounts for 11% of the mass percentage of the prepared raw materials, and the particle size of the alumina ranges from 2.1 to 3 microns;

White carbon black, which accounts for 15% of the mass percentage of the prepared raw material, and the particle size of the white carbon black ranges from 2.2 to 3 microns;

Palladium acetate salt, which accounts for the mass percentage of the prepared raw material in the range of 2%;

Zinc barium white, which accounts for the mass percentage of the prepared raw material in the range of 3%.

Place the polysilazane and polysiloxane in the reactor, and mix the polysilazane and polysiloxane at a speed of 660 rpm;

Add palladium acetate to the polysiloxane and polysilazane, and stir at a speed of 1300 rpm. The palladium acetate can promote the copolymerization reaction between polysiloxane and polysilazane to form poly Siloxane-polysilazane copolymer;

To the polysiloxane-polysilazane copolymer, add o-xylene, petroleum ether and 1,1,1,2,2,3,3,4,5,5,6,6,6-dec After trifluorohexane, add alumina, zinc barium white and white carbon black, and stir at 1600 rpm to obtain the initial coating product;

The primary coating product is ground to make the particle size of alumina and white carbon range from 0.21 to 0.35 microns to obtain a coating composition.

Example 5

The preparation method of the coating composition includes the following steps:

Provide preparation materials, the preparation materials include:

Polysilazane, wherein R ₁ of the polysilazane is an alkylamine group, R ₂ is an alkyl group, and R ₃ is an aryl group, and the mass percentage of the polysilazane in the preparation raw material is 28% ,

Polysiloxane, wherein R ₄ of the polysiloxane is an alkylsiloxane and R ₅ is a cycloalkane, and the polysiloxane accounts for 12% of the mass percentage of the prepared raw material;

Perfluoro-1-butane sulfonic acid, which accounts for 11% of the mass percentage of the prepared raw materials;

N-hexane, which accounts for 10% of the mass percentage of the prepared raw material;

Acetone, which accounts for 12% of the mass percentage of the prepared raw material;

Attapulgite, which accounts for the mass percentage of the prepared raw material in the range of 4%, and the particle size of the attapulgite is in the range of 2.5-3 microns;

White carbon black, which accounts for 4% of the mass percentage of the prepared raw material, and the particle size of the white carbon black ranges from 2 to 3.2 microns;

Magnesium oxide, which accounts for 14% of the mass percentage of the prepared raw materials, and the particle size of the magnesium oxide ranges from 0.2 to 0.25 microns;

Triethylenetetramine, which accounts for 2% of the mass percentage of the prepared raw material;

Malachite, which accounts for 3% of the mass percentage of the prepared raw material.

Place the polysilazane and polysiloxane in the reactor and mix the polysilazane and polysiloxane at a speed of 750 rpm;

Add triethylenetetramine to the polysiloxane and polysilazane and stir at 1400 rpm, triethylenetetramine can promote the copolymerization reaction between polysiloxane and polysilazane, Generate polysiloxane-polysilazane copolymer;

After adding n-hexane, acetone and perfluoro-1-butane sulfonic acid to the polysiloxane-polysilazane copolymer, attapulgite, white carbon black, malachite and magnesium oxide are added at 2300 rpm / Min speed to obtain the initial coating product; and

The primary coating product is subjected to grinding treatment so that the particle size of the attapulgite and white carbon black ranges from 0.2 to 0.25 microns to obtain a coating composition.

Example 6

The preparation method of the coating composition includes the following steps:

Provide preparation materials, the preparation materials include:

Polysilazane, R ₁ of the polysilazane is an aryl group, R ₂ is an aryl group, and R ₃ is a hydrogen group, the polysilazane accounts for 25% of the mass percentage of the prepared raw material,

Polysiloxane, wherein R ₄ of the polysiloxane is an alkene and R ₅ is a hydrogen group, and the range of the mass percentage of the polysiloxane in the preparation raw material is 10%;

Perfluoro-1,2-dimethylcyclohexane, which accounts for 9% of the mass percentage of the prepared raw materials;

Methyl ethyl ketone, which accounts for 8% of the mass percentage of the prepared raw material;

M-xylene, which accounts for the mass percentage of the prepared raw material in the range of 7%;

Alumina, which accounts for 30% of the mass of the prepared raw material, and a particle size of the alumina, which ranges from 0.24 to 0.33 microns; titanium oxide, which accounts for the mass of the prepared raw material in the range of 3% The particle size of the titanium oxide ranges from 0.21 to 0.32 microns;

Bentonite, which accounts for the mass percentage of the prepared raw material in the range of 3%, and the particle size of the bentonite ranges from 0.25 to 0.35 microns;

Triphenyl tin, which accounts for 2% of the mass percentage of the prepared raw material;

Cobalt blue, which accounts for 3% of the mass percentage of the prepared raw material.

Add triphenyltin to the polysiloxane and polysilazane and stir at 1100 rpm, triphenyltin can promote the copolymerization reaction between polysiloxane and polysilazane, Generating polysiloxane-polysilazane copolymer; and

After adding methyl ethyl ketone, m-xylene and perfluoro-1,2-dimethylcyclohexane to the polysiloxane-polysilazane copolymer, then adding alumina, titanium oxide, cobalt blue and bentonite , Stirring at a speed of 2300 rpm to obtain a coating composition.

Example 7

The preparation method of the coating composition includes the following steps:

Provide preparation materials, the preparation materials include:

Polysilazane, wherein R ₁ of the polysilazane is an alkane, R ₂ is an alkane, and R ₃ is a hydrogen group, the polysilazane accounts for 23% of the mass percentage of the prepared raw material,

Polysiloxane, wherein R ₄ of the polysiloxane is an alkoxy group and R ₅ is an alkoxy group, and the range of the mass percentage of the polysiloxane in the preparation raw material is 7%;

Perfluoro-2,7-dimethyloctane, which accounts for the mass percentage of the prepared raw material in the range of 7%;

Toluene, which accounts for 34% of the mass percentage of the prepared raw materials;

Alumina, which accounts for 17% of the mass percentage of the prepared raw material, and the particle size of the alumina is 2.5 to 3 microns;

Zinc oxide, which accounts for the mass percentage of the prepared raw material in the range of 5%, and the particle size of the zinc oxide in the range of 2 to 3 microns;

Ceramic microspheres, which account for 3% of the mass percentage of the prepared raw material, and the particle diameter of the ceramic microspheres ranges from 0.2 to 0.3 microns;

Titanium manganese brown, which accounts for 2% of the mass percentage of the prepared raw material.

Place the polysilazane and polysiloxane in the reactor, and mix the polysilazane and polysiloxane at a speed of 100 rpm;

Add palladium acetate salt to the polysiloxane and polysilazane, stirring at 1800 rpm, the palladium acetate salt can promote the copolymerization reaction between polysiloxane and polysilazane Siloxane-polysilazane copolymer;

After adding toluene, perfluoro-2,7-dimethyloctane to the polysiloxane-polysilazane copolymer, then add alumina, titanium manganese brown and zinc oxide at 2700 rpm Stirring at a speed to obtain the initial coating product; and

The primary coating product is ground to make the particle size of alumina and zinc oxide range from 0.2 to 0.25 microns, and then ceramic microspheres are added to obtain a coating composition.

Example 8

The preparation method of the coating composition includes the following steps:

Provide preparation materials, the preparation materials include:

Polysilazane, R ₁ of the polysilazane is an alkene, R ₂ is an aryl group, and R ₃ is a hydrogen group, and the polysilazane accounts for 20% of the mass percentage of the prepared raw material,

Polysiloxane, wherein R ₄ of the polysiloxane is an alkane and R ₅ is an alkane, and the mass percentage of the polysiloxane to the raw material for the preparation is 5%;

Perfluoro- (1,3,5-trimethylbenzene), which accounts for 5% of the mass of the prepared raw material;

Ether, which accounts for 25% of the mass percentage of the prepared raw material;

P-xylene, which accounts for 20% of the mass percentage of the prepared raw material;

White carbon black, which accounts for 10% of the mass percentage of the prepared raw material, and the particle size of the white carbon black ranges from 2.5 to 3 microns;

Aluminum hydroxide, which accounts for 12% of the mass percentage of the prepared raw material, and the particle size of the aluminum hydroxide ranges from 2 to 3 microns;

Glass microspheres, which occupy a mass percentage of the prepared raw material in the range of 2%, and the particle diameter of the glass microspheres in the range of 0.2 to 0.3 microns;

N, N-dimethylaniline, which accounts for 1% of the mass percentage of the prepared raw material.

Place the polysilazane and polysiloxane in the reactor, and mix the polysilazane and polysiloxane at a speed of 550 rpm;

Add N, N-dimethylaniline to the polysiloxane and polysilazane, stirring at 1600 rpm, N, N-dimethylaniline can promote polysiloxane and polysilicon Copolymerization of azanes to form polysiloxane-polysilazane copolymer;

After adding diethyl ether, p-xylene and perfluoro- (1,3,5-trimethylbenzene) to the polysiloxane-polysilazane copolymer, white carbon black and aluminum hydroxide are added, Stir at a speed of 2200 rpm to obtain the initial coating product;

The primary coating product is ground to make the particle size of white carbon black and aluminum hydroxide range from 0.2 to 0.25 microns, and then glass microspheres are added to obtain a coating composition.

Example 9

The preparation method of the coating composition includes the following steps:

Provide preparation materials, the preparation materials include:

Polysilazane, R ₁ of the polysilazane is a hydrogen group, R ₂ is a hydrogen group, and R ₃ is a hydrogen group, the polysilazane accounts for 30% of the mass percentage of the prepared raw material,

Polysiloxane, wherein R ₄ of the polysiloxane is a hydrogen group and R ₅ is an alkene, and the range of the mass percentage of the polysiloxane in the preparation raw material is 30%;

Perfluorotetraethylene glycol dimethyl ether, which accounts for 10% of the mass percentage of the prepared raw materials;

Dibutyl ether, which accounts for 27% of the mass percentage of the prepared raw material;

Triethylenediamine, which accounts for 3% of the mass percentage of the prepared raw material.

Place the polysilazane and polysiloxane in the reactor, and mix the polysilazane and polysiloxane at a speed of 250 rpm;

Add triethylenediamine to the polysiloxane and polysilazane and stir at a speed of 1700 rpm. Triethylenediamine can promote the copolymerization between polysiloxane and polysilazane Reaction to form polysiloxane-polysilazane copolymer;

Dibutyl ether and perfluorotetraethylene glycol dimethyl ether were added to the polysiloxane-polysilazane copolymer, and stirred at a speed of 2700 rpm to obtain a coating composition.

Example 10

The preparation method of the coating composition includes the following steps:

Provide preparation materials, the preparation materials include:

Polysiloxane, wherein R ₄ of the polysiloxane is a hydrogen group and R ₅ is an alkene, and the range of the mass percentage of the polysiloxane in the preparation raw material is 20%;

Place the polysilazane and polysiloxane in the reactor, and mix the polysilazane and polysiloxane at a speed of 120 rpm;

Add triethylenediamine to the polysiloxane and polysilazane, stirring at 1400 rpm, triethylenediamine can promote the copolymerization between polysiloxane and polysilazane React to form a polysiloxane-polysilazane copolymer; and

Dibutyl ether and perfluorotetraethylene glycol dimethyl ether were added to the polysiloxane-polysilazane copolymer, and the mixture was stirred at a speed of 2100 rpm to obtain a coating composition.

Example 11

The preparation method of the coating composition includes the following steps:

Provide preparation materials, the preparation materials include:

Polysilazane, R ₁ of the polysilazane is a hydrogen group, R ₂ is a hydrogen group, and R ₃ is a hydrogen group, the polysilazane accounts for 20% of the mass percentage of the prepared raw material,

Dibutyl ether, which accounts for 23% of the mass percentage of the prepared raw material;

Triethylenediamine, which accounts for 3% of the mass percentage of the prepared raw materials;

Nickel antimony titanate, which accounts for the mass percentage of the prepared raw material in the range of 2%;

Titanium chromium brown, which accounts for 2% of the mass percentage of the prepared raw material.

Place the polysilazane and polysiloxane in the reactor, and mix the polysilazane and polysiloxane at a speed of 180 rpm;

Add triethylenediamine to the polysiloxane and polysilazane, stirring at 1400 rpm, triethylenediamine can promote the copolymerization between polysiloxane and polysilazane Reaction to form polysiloxane-polysilazane copolymer;

Add dibutyl ether and perfluorotetraethylene glycol dimethyl ether to the polysiloxane-polysilazane copolymer, then add nickel antimony titanate and titanium chrome brown, and stir at a speed of 2400 rpm To obtain a coating composition.

Example 12

The preparation method of the coating composition includes the following steps:

Provide preparation materials, the preparation materials include:

Dibutyl ether, which accounts for 22% of the mass percentage of the prepared raw material;

Silicon carbide, which accounts for the mass percentage of the prepared raw material in the range of 5%, and the particle diameter of the silicon carbide in the range of 2.5 to 3 microns;

Place the polysilazane and polysiloxane in the reactor and mix the polysilazane and polysiloxane at a speed of 300 rpm;

Add triethylenediamine to the polysiloxane and polysilazane and stir at 1300 rpm, triethylenediamine can promote the copolymerization between polysiloxane and polysilazane Reaction to form polysiloxane-polysilazane copolymer;

After adding dibutyl ether and perfluorotetraethylene glycol dimethyl ether to the polysiloxane-polysilazane copolymer, then add silicon carbide, and stir at a speed of 2600 rpm to obtain the initial coating product ;and

The primary coating product is subjected to grinding treatment so that the particle size of silicon carbide ranges from 0.5 to 0.75 microns to obtain a coating composition.

Example 13

The preparation method of the coating composition includes the following steps:

Provide preparation materials, the preparation materials include:

Dibutyl ether, which accounts for 18% of the mass percentage of the prepared raw material;

Alumina, which accounts for the mass percentage of the prepared raw material in the range of 5%, and the particle size of the alumina in the range of 0.25 to 0.33 microns;

Antimony white, which accounts for 1% of the mass percentage of the prepared raw material;

Barium sulfate, which accounts for 1% of the mass percentage of the prepared raw material;

Zinc barium white, which accounts for 2% of the mass percentage of the prepared raw material.

Place the polysilazane and polysiloxane in the reactor, and mix the polysilazane and polysiloxane at a speed of 900 rpm;

Add triethylenediamine to the polysiloxane and polysilazane and stir at 1200 rpm, triethylenediamine can promote the copolymerization between polysiloxane and polysilazane Reaction to form polysiloxane-polysilazane copolymer;

After adding dibutyl ether and perfluorotetraethylene glycol dimethyl ether to the polysiloxane-polysilazane copolymer, alumina, antimony white, barium sulfate and zinc barium white are added at 2500 rpm. Stir at a speed of minutes to obtain a coating composition.

Example 14

The preparation method of the coating composition includes the following steps:

Provide preparation materials, the preparation materials include:

Silicon carbide, which accounts for the mass percentage of the prepared raw material in the range of 5%, and the particle size of the silicon carbide in the range of 2 to 3 microns; and

Place the polysilazane and polysiloxane in the reactor, and mix the polysilazane and polysiloxane at a speed of 200 rpm;

Add dimethyl tin to the polysiloxane and polysilazane and stir at 1100 rpm, dimethyl tin can promote the copolymerization reaction between polysiloxane and polysilazane, Generate polysiloxane-polysilazane copolymer;

After adding dibutyl ether and perfluorotetraethylene glycol dimethyl ether to the polysiloxane-polysilazane copolymer, then add silicon carbide and stir at a speed of 2500 rpm to prepare the initial coating product;

The primary coating product is ground to make the particle size of silicon carbide range from 0.8 to 0.9 microns to obtain a coating composition.

Example 15

The preparation method of the coating composition includes the following steps:

Provide preparation materials, the preparation materials include:

Polysilazane, R ₁ of the polysilazane is a hydrogen group, R ₂ is a hydrogen group, and R ₃ is a hydrogen group, the polysilazane accounts for 17% of the mass percentage of the prepared raw material,

Polysiloxane, wherein R ₄ of the polysiloxane is a hydrogen group and R ₅ is an alkene, and the range of the mass percentage of the polysiloxane in the preparation raw material is 3%;

3- (2-perfluorohexylethoxy) -1,2-epoxypropane, which accounts for 3% of the mass percentage of the prepared raw material;

P-xylene, which accounts for 47% of the mass percentage of the prepared raw materials;

Silicon carbide, which accounts for 25% of the mass percentage of the prepared raw material, and the particle size of the silicon carbide ranges from 0.2 to 0.3 microns;

Triethylenediamine, which accounts for 1% of the mass percentage of the prepared raw material;

Calcined loess, which accounts for 1% of the mass percentage of the prepared raw material;

Burnt ochre, which accounts for 1% of the mass percentage of the prepared raw material;

Indian red, which accounts for 2% of the mass percentage of the prepared raw material.

Add triethylenediamine to the polysiloxane and polysilazane and stir at 1600 rpm, triethylenediamine can promote the copolymerization between polysiloxane and polysilazane Reaction to form polysiloxane-polysilazane copolymer;

After adding p-xylene to the polysiloxane-polysilazane copolymer, then add 3- (2-perfluorohexylethoxy) -1,2-epoxypropane, then add calcined loess, The ochre, Indian red, and silicon carbide were stirred at a speed of 2600 rpm to prepare a coating composition.

Example 16

The preparation method of the coating composition includes the following steps:

Provide preparation materials, the preparation materials include:

Polysilazane, wherein R ₁ of the polysilazane is a hydrogen group, R ₂ is an alkane, and R ₃ is a hydrogen group, and the polysilazane accounts for 12% of the mass percentage of the prepared raw material,

Polysiloxane, wherein R ₄ of the polysiloxane is an alkylamine group and R ₅ is an alkene, and the range of the mass percentage of the polysiloxane in the preparation raw material is 3%;

P-xylene, which accounts for 56% of the mass percentage of the prepared raw material;

Silicon carbide, which accounts for 25% of the mass percentage of the prepared raw material, and the particle size of the silicon carbide ranges from 1 to 2 microns;

Triethylenediamine, which accounts for 1% of the mass percentage of the prepared raw material.

Place the polysilazane and polysiloxane in the reactor, and mix the polysilazane and polysiloxane at a speed of 400 rpm;

Add triethylenediamine to the polysiloxane and polysilazane, stirring at 1800 rpm, triethylenediamine can promote the copolymerization between polysiloxane and polysilazane Reaction to form polysiloxane-polysilazane copolymer;

After adding p-xylene and 3- (2-perfluorohexylethoxy) -1,2-epoxypropane to the polysiloxane-polysilazane copolymer, add silicon carbide and rotate at 3000 rpm / Min speed stirring to make the initial paint product;

The primary coating product is subjected to grinding treatment so that the particle size of silicon carbide ranges from 0.21 to 0.32 micrometers to prepare the coating composition.

Example 17

The preparation method of the coating composition includes the following steps:

Provide preparation materials, the preparation materials include:

Polysilazane, R ₁ of the polysilazane is a hydrogen group, R ₂ is an alkane, and R ₃ is a hydrogen group, and the polysilazane accounts for 7% of the mass of the prepared raw material,

P-xylene, which accounts for 59% of the mass percentage of the prepared raw materials;

Hanlan, which accounts for 2% of the mass percentage of the prepared raw material.

Place the polysilazane and polysiloxane in the reactor, and mix the polysilazane and polysiloxane at a speed of 450 rpm;

Add triethylenediamine to the polysiloxane and polysilazane, and stir at a speed of 2000 rpm. Triethylenediamine can promote the copolymerization between polysiloxane and polysilazane Reaction to form polysiloxane-polysilazane copolymer;

After adding p-xylene and 3- (2-perfluorohexylethoxy) -1,2-epoxypropane to the polysiloxane-polysilazane copolymer, then adding silicon carbide and hanlan, Stir at 3000 rpm to make the initial paint product;

The primary coating product is ground to make the particle size of silicon carbide reach 0.2-0.3 microns, and the coating composition is prepared.

Apply the coating composition prepared in the above Examples 1-17 to the substrate to form a coating to obtain a sample, which can be named as sample 1, sample 2 ... sample 17, and apply to the sample 1-17 The hardness, adhesion temperature resistance, and water contact angle of the layer are tested. For the test results, please refer to Table 1.

Table 1 Coating physical test results

A

Hardness (H)

Attach

Temperature resistance (weight loss%)

Water contact angle (°)

样品1Sample 1	88	1.841.84	115115
样品2Sample 2	99	1.301.30	117117
样品3Sample 3	88	1.381.38	119119
样品4Sample 4	88	1.631.63	120120
样品5Sample 5	88	1.571.57	119119
样品6Sample 6	77	2.052.05	107107
样品7Sample 7	77	2.072.07	108108
样品8Sample 8	77	2.232.23	106106
样品9Sample 9	88	1.851.85	115115
样品10Sample 10	99	1.191.19	116116
样品11Sample 11	88	1.741.74	114114
样品12Sample 12	99	1.131.13	120120
样品13Sample 13	99	1.131.13	118118
样品14Sample 14	99	1.181.18	118118
样品15Sample 15	77	1.231.23	9898
样品16Sample 16	66	1.261.26	9898
样品17Sample 17	66	1.101.10	9898

According to GB / T 6739-1996 (coating film hardness test method), the hardness of samples 1-17 was tested, and the hardness of samples 1-17 ranged from 6 to 9H, indicating that samples 1-17 all had better hardness.

The adhesion of samples 1-17 was tested according to GB / T 9286 (adhesion test method), which showed that the 100-cell adhesion of samples 1-17 could reach level 0, indicating that the adhesion of samples 1-17 was also better.

According to GB / T9286 (temperature resistance test method), the weight loss of samples 1-17 was tested, which showed that samples 1-17 had better temperature resistance.

The water contact angle of Samples 1-17 was tested using the profile image analysis method. The water contact angle of Samples 1-17 was greater than 90 °, indicating that Samples 1-17 all had the advantage of being easy to clean.

The above are only optional embodiments of the present application, and therefore do not limit the patent scope of the present application. Any equivalent structural transformations made by using the content of the specification of the present application under the inventive concept of the present application, or directly or indirectly used in other related The technical fields are included in the patent protection scope of this application.

Claims

A coating composition, wherein the raw materials for preparing the coating composition include polysilazane, polysiloxane, and fluorine-modified antifouling agent, and the polysilazane and polysiloxane undergo a copolymerization reaction A polysilazane-polysiloxane copolymer is formed, and the fluorine-modified antifouling agent is mixed with the polysilazane-polysiloxane copolymer.
The coating composition according to claim 1, wherein the mass percentage of the polysilazane in the preparation raw material ranges from 7 to 96.99%, and the polysiloxane accounts for the mass percentage of the preparation raw material The range is 3 to 73%, and the fluorine modified antifouling agent accounts for 0.01% to 20% of the mass percentage of the prepared raw material.
The coating composition according to claim 1, wherein the fluorine-modified antifouling agent is selected from methyl perfluoroamyl ketone, 1-methyl-3-trifluoromethyl-2-pyrrolidone, 1H, 1H-perfluoro-1-tetradecanol, 1-fluoroheptane, potassium tridecane-1-sulfonate, perfluoro-n-pentane, [(4-fluorophenoxy) methyl] epoxy Ethane, 2H-perfluoro-5,8,11,14,17-pentamethyl-3,6,9,12,15,18-hexaoxacosane, 2- (trifluoromethyl) -3-ethoxydodecanefluorohexane, decafluoro-4- (pentafluoroethyl) epoxyhexanesulfonic acid potassium salt, 1,1,1,2,2,3,4,5,5, 6,6,6-dodecafluoro-3,4-bis (trifluoromethyl) hexane, perfluoroeicosane, 1H, 6H-perfluorohexane, 1,7-difluoroheptane, 1, 1,1,2,2,3,3,4,5,5,6,6,6-tridecanefluorohexane, 1,1,2,2,5,5,6,6-octafluorohexane , Perfluoroparamenthol, heptafluoropropane, perfluoroheptane, perfluoro (methyl decalin), perfluoropolyether, perfluoro-1-butanesulfonic acid, perfluoropentane, perfluoro (methyl ring Hexane), perfluoro (2,2,3,3-tetramethylbutane), perfluoro-1-octane, perfluorohexane, N-perfluoro n-decane, perfluoro-1,2 -Dimethylcyclohexane, perfluoropentadecane, perfluorononane, perfluoro-n-butane, perfluorododecane, perfluorotetradecane, perfluoro-2,7-dimethyloctane, Perfluorohexadecane, perfluoro-2,3,5,6-tetramethylcyclohexane, perfluorotridecane, perfluoromethylcyclopentane, perfluorodimethylcyclobutane, (perfluoro Hexyl) benzene, perfluoro- (1,3,5-trimethylbenzene), perfluorobutylethane, perfluorobutyl ether, perfluorotetracosane, perfluorohexylethane, perfluorotetraethyl Glycol dimethyl ether, perfluoro-2-methylbutane, perfluoro-p-menthane, perfluorooctylethane, 3- (perfluorohexyl) propylene oxide, 3- (perfluorohexyl) propylene oxide , 3- (2-perfluorohexylethoxy) -1,2-epoxypropane, 3- (perfluoro-n-butane) -1,2-epoxypropane, 3- (perfluoro-n-octane)- 1,2-epoxypropane, 1H, 1H-perfluoro-1-tetradecane, 2H-perfluoro 15-methyl-3,6-dioxanonane, 3- (perfluoro-5-methyl Hexyl) -1,2-propylene oxide, 1H-perfluoropentane, 1- (perfluoro-n-hexyl) dodecane, 1- (perfluoro-n-octyl) tetradecane, 1H, 6H -Perfluorohexane, 1- (perfluoro-n-hexyl) decane, 1H-perfluoro-2,4,4, -trimethylpentane, 1H, 10H-perfluoro Decane, 1H-perfluoro-2,6-dimethylheptane, 1-methyl-4- (perfluoroethyl) toluene, 2H-perfluoro (2-methylpentane), ethyl perfluoro Butyl ether, 8-perfluorodecyloctane, perfluoroisobutane, perfluorobutyl methyl ether, perfluoropropylene oxide, 2-trifluoromethyl perfluoropentane, and 2H-3H-perfluoropentane At least one of the alkanes.
The coating composition according to claim 1, wherein the structural formula of the polysilazane is:
Wherein R 1 is hydrogen, alkane, cycloalkane, alkene, aryl, alkoxy, alkylsiloxy, or alkylamine group, R 2 is hydrogen, alkane, cycloalkane, alkene, aryl , Alkoxy, alkylsiloxy, or alkylamino, R 3 is hydrogen, alkane, cycloalkane, alkene, aryl, alkoxy, alkylsiloxy, or alkylamine.
The coating composition according to claim 4, wherein at least one of R 1 and R 2 is a hydrogen group or an alkene.
The coating composition according to claim 1, wherein the molecular weight of the polysilazane is 100-1000; and / or

The molecular weight of the polysiloxane is 100-1300.
The coating composition according to claim 1, wherein the structural formula of the polysiloxane is:
Wherein R 4 is hydrogen, alkane, cycloalkane, alkene, aryl, alkoxy, or alkylsiloxy, R 5 is hydrogen, alkane, cycloalkane, alkene, aryl, alkoxy , Or alkylsiloxy.
The coating composition according to any one of claims 2-7, wherein the raw material for preparing the coating composition further comprises a color material, the fluorine-modified color material and the polysilazane-polysiloxane Copolymer and antifouling agent are mixed.
The coating composition according to claim 8, wherein the mass percentage of the polysilazane in the preparation raw material ranges from 7 to 50%, and the polysiloxane accounts for the mass percentage of the preparation raw material The range is 3-40%, the fluorine-modified antifouling agent accounts for 0.01% to 20% of the mass of the prepared raw material, and the color material accounts for the mass percentage of the prepared raw material in the range of 0.01 to 5 %.
The coating composition according to claim 8, wherein the colorant is selected from the group consisting of white colorant, yellow colorant, orange colorant, black colorant, purple colorant, brown colorant, green colorant and blue colorant , Gray colorants, and red colorants.
The coating composition according to claim 10, wherein the white colorant is selected from at least one of antimony white, barium sulfate, zinc barium white, titanium white, and zinc white; and / or,

The yellow colorant is nickel antimony titanate and / or titanium chrome brown; and / or,

The orange pigment is zinc tin rutile; and / or,

The black colorant is selected from at least one of copper chrome black spinel, titanium black, manganese dioxide, mas black, ivory ink, and carbon black; and / or,

The purple pigment is cobalt phosphate; and / or,

The brown color material is titanium manganese brown and / or zinc iron chrome brown; and / or,

The green colorant is selected from at least one of cobalt green, malachite, and sea chlorite; and / or,

The blue colorant is selected from at least one of celestite, cobalt blue, Egyptian blue, Han blue, azurite, and yttrium indium manganese blue; and / or,

The gray color material is at least one of copper chrome black spinel, titanium black, manganese dioxide, mas black, black purple, ivory ink, and carbon black and antimony white, barium sulfate, zinc barium white, titanium A mixture of at least one of white and zinc white, or the gray colorant is at least one of copper chrome black spinel, titanium black, manganese dioxide, mas black, ink purple, ivory ink, and carbon black A mixture with at least one of antimony white, barium sulfate, zinc barium white, titanium white, and zinc white, and at least one of burnt ochre, Indian red, and cobalt blue; and / or,

The red colorant is selected from at least one of calcined loess, burnt ocher, and Indian red.
The coating composition according to any one of claims 2-7, wherein the raw material for preparing the coating composition further includes a solvent, and the solvent accounts for a mass percentage of the coating composition in the range of 10-66%, The solvent is selected from at least one of alkane solvents, ether solvents, ketone solvents, and benzene derivative solvents.
The coating composition according to any one of claims 2-7, wherein the raw material for preparing the coating composition further includes a catalyst, and the catalyst accounts for 0.01% to 5% of the mass percentage of the raw material for preparation. The catalyst is an amine catalyst and / or a metal catalyst.
The coating composition according to claim 13, wherein the amine catalyst is one or more selected from fatty amines, alicyclic amines, alcohol amines, and aromatic amines, and the fatty amines are selected from diethyl At least one of amine, triethylamine, and triethylenetetramine; the alicyclic amine is selected from at least one of triethylenediamine, piperazine, piperidine, and morpholine; the alcohol amine At least one selected from N, N-dimethylethanolamine, diisopropanolamine, and N, N-diethylethanolamine; the aromatic amine is selected from aniline, o-phenylenediamine, benzidine, and N , At least one of N-dimethylaniline; and / or

The metal catalyst is an organotin catalyst and / or a palladium catalyst. The organotin catalyst is selected from at least one of dibutyl tin dilaurate, stannous octoate, dimethyl tin, and triphenyl tin; The palladium catalyst is selected from at least one of carbon / palladium, palladium chloride, palladium propionate salt, palladium acetate salt, and triphenylphosphorpalladium.
The coating composition according to any one of claims 2-7, wherein the raw material for preparing the coating composition further includes a filler, and the mass percentage of the filler in the raw material for the preparation ranges from 1 to 50%. The filler is selected from at least one of silicon carbide, alumina, titanium oxide, zinc oxide, magnesium oxide, aluminum hydroxide, white carbon, attapulgite, kaolin, bentonite, glass microspheres, and ceramic microspheres.
The coating composition according to claim 12, wherein the raw material for preparing the coating composition further includes a catalyst and a filler, wherein the catalyst accounts for a mass percentage of the coating composition in the range of 0.01 to 5%, and the filler The mass percentage of the coating composition ranges from 1 to 50%, and the polysiloxane and polysilazane percentage of the coating composition ranges from 10% to 80%.
A method for preparing a coating composition includes the following steps:

Provide preparation materials including polysilazane, polysiloxane, and fluorine-modified antifouling agent;

Mixing polysilazane and polysiloxane, copolymerization reaction of polysilazane and polysiloxane to produce polysilazane-polysiloxane copolymer;

A fluorine-modified antifouling agent is added to the polysilazane-polysiloxane copolymer to prepare the coating composition.
A coated article, wherein the coated article includes a substrate and a coating layer formed on the surface of the substrate, the coating layer containing the coating composition according to any one of claims 1-16.
A method for preparing a coated part includes the following steps:

Providing a substrate and the coating composition according to any one of claims 1-16;

The coating composition is applied to the surface of the substrate to prepare the coated article.
A household appliance, wherein the household appliance includes the coated member according to claim 18.