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

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

Active Publication Date: 2022-01-25
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 solution 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 does not belong to toxic and harmful substances, 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 is in the range of 0.01 to 100 microns, preferably 1 to 80 microns, more preferably 2 to 50 microns, and further preferably 5 to 20 microns.

[0098] The thickness of the primer layer may be 0.01 microns, 1 micron, 2 microns, 5 microns, 10 microns, 20 microns, 50 microns or 100 microns.

[0099] It can be und...

Embodiment 1

[0204] The preparation method of the coated part comprises the following steps:

[0205] provide a matrix;

[0206] Provide polysilazane, and fumed silica, the R of the polysilazane 1 is a hydrogen group, R 2 is fluoroalkyl, 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 in the coating composition;

[0207] Mix polysilazane, p-xylene and fumed silica, and stir at a speed of 300 rev / min to obtain a coating composition;

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

Embodiment 2

[0210] The preparation method of the coated part comprises the following steps:

[0211] provide a matrix;

[0212] Provide polysilazane, p-xylene, fumed silica and titanium dioxide, the R of the polysilazane 1 is a hydrogen group, R 2 is fluoroalkyl, R 3 For the aryl group, mix polysilazane, p-xylene, fumed silica and titanium white, and stir at a speed of 400 rpm 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 fumed silica is 15% in the coating composition, and the titanium dioxide is The mass percentage content of the coating composition is 5%;

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

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Abstract

The invention provides a coating composition, a coated part prepared from the coating composition, a preparation method of the coated part, and a household appliance using the coated part. The coating composition contains polysilazane and fumed silica, and the chemical structure of the polysilazane is: wherein, R 1 , R 2 , and R 3 At least one of the three is a low surface energy group, and the low surface energy group is a hydrogen group, a siloxy group, an alkyl siloxy group, a fluoroalkyl group, or an alkyl fluoroether. The coated piece prepared by the coating composition of the present invention has the advantages of high hardness, good adhesion, good temperature resistance, easy cleaning, and can reach the food contact safety level.

Description

technical field [0001] The present invention relates to the technical field of household appliances, in particular to a coating composition, a coated part prepared from the coating composition, a preparation method of the coated part, and a household appliance using the coated part. 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-mentioned coatings 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 means of powder), or silica sol + organosilicon hybrid coating. However, the above coatings have the disadvantages of 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 inventi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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