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Coating composition, coating piece as well as preparation method thereof and domestic appliance

A technology of composition and coating parts, applied in the direction of fireproof coatings, coatings, etc., can solve the problems of low hardness, poor temperature resistance, poor adhesion, etc., and achieve the effect of high hardness, good temperature resistance, and good adhesion

Active Publication Date: 2019-02-12
GUANGDONG MIDEA KITCHEN APPLIANCES MFG CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned coatings have disadvantages such as low hardness, poor adhesion, poor temperature resistance, difficult to clean, and potential food contact safety hazards.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0096] The raw materials for preparing the primer layer of the technical scheme of the present invention include polysilazane and polysiloxane. The polysilazane and polysiloxane undergo a copolymerization reaction to form a polysilazane-polysiloxane copolymer. The polysilazane-polysiloxane copolymer has the advantages of high hardness, good adhesion and good temperature resistance, and the polysilazane-polysiloxane copolymer is not a toxic and harmful substance, so that it has the primer layer The coated parts have the advantages of high hardness, good adhesion, good temperature resistance, and food contact safety.

[0097] The thickness of the primer layer ranges from 0.01 micrometer to 100 micrometers, preferably from 1 micrometer to 80 micrometers, more preferably from 2 micrometers to 50 micrometers, and even more preferably from 5 micrometers to 20 micrometers.

[0098] The thickness of the primer layer may be 0.01 micrometer, 1 micrometer, 2 micrometer, 5 micrometer, 10 micr...

Embodiment 1

[0204] The preparation method of the coated member includes the following steps:

[0205] Provide matrix;

[0206] Provide polysilazane, and fumed silica, the R of the polysilazane 1 Is a hydrogen radical, R 2 Is a fluoroalkyl group, R 3 Is an aryl group, wherein the polysilazane accounts for 70% by mass of the coating composition, and the fumed silica accounts for 30% by mass of the coating composition;

[0207] Mixing polysilazane, p-xylene, and fumed silica, and stirring at a speed of 300 revolutions per minute to obtain a coating composition;

[0208] The coating composition is coated on the surface of the substrate, and a top coat with a thickness of 40 microns is formed on the surface of the substrate to prepare the coated article.

Embodiment 2

[0210] The preparation method of the coated member includes the following steps:

[0211] Provide matrix;

[0212] Provide polysilazane, p-xylene, fumed silica and titanium white, the R of the polysilazane 1 Is a hydrogen radical, R 2 Is a fluoroalkyl group, R 3 Is an aryl group, mixed polysilazane, p-xylene, fumed silica and titanium dioxide, and stirred at a speed of 400 revolutions per minute to obtain a coating composition, wherein the polysilazane accounts for the coating composition The mass percentage content of the p-xylene is 40%, the mass percentage content of the p-xylene in the coating composition is 40%, the mass percentage content of the fumed silica in the coating composition is 15%, and the titanium dioxide accounts for all The mass percentage content of the coating composition is 5%;

[0213] The coating composition is coated on the surface of the substrate, and a top coat with a thickness of 40 microns is formed on the surface of the substrate to prepare the coated...

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Abstract

The invention provides a coating composition, a coating piece prepared from the coating composition, a preparation method of the coating piece and a domestic appliance applying the coating piece. Thecoating composition is prepared from polysilazane and fumed silica. The chemical structure of polysilazane is as shown in the description, wherein at least one of R1, R2 and R3 is a low surface energygroup, and the low surface energy group is hydrogen, siloxy, alkyl siloxy, perfluoroalkyl or alkyl isoflurane. The coating piece prepared from the coating composition has the advantages that the hardness is high, the adhesiveness is good, the temperature resistance is good, cleaning can be done easily, the food contact safety level can be reached.

Description

Technical field [0001] The present invention relates to the technical field of household appliances, in particular to a coating composition, a coated piece prepared from the coating composition, a preparation method of the coated piece, and a household appliance using the coated piece. Background technique [0002] In the field of micro-baking, it is usually necessary to form a coating on the surface of kitchen appliances. The materials of the above coating are mainly: enamel (the enamel can be formed on the surface of the product through the enamel process), silicone, epoxy powder (can be sprayed The epoxy powder is sprayed on the surface of the product by the powder method), or silica sol + organic silicon hybrid coating. However, the above-mentioned coatings have disadvantages such as low hardness, poor adhesion, poor temperature resistance, difficult to clean, and potential food contact safety hazards. Summary of the invention [0003] The main purpose of the present inventio...

Claims

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Application Information

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IPC IPC(8): C09D183/16C09D7/61
CPCC09D183/16C09D5/18C09D7/61C08K3/36
Inventor 赵莉
Owner GUANGDONG MIDEA KITCHEN APPLIANCES MFG CO LTD
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