Ceramic coating film composite and preparation method thereof

A composition and ceramic coating technology, applied in the direction of coating, etc., can solve the problems of inconvenient processing of special-shaped workpieces, environmental pollution, deformation of substrates, etc.

Active Publication Date: 2011-05-18
上海金力泰化工股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, there are defects such as the environmental pollution caused by flying sand and dust in the working environment, the inconvenient processing of special-shaped workpieces, and the possibility of substrate deformation in the sandblasting substrate.
[0006] So far, such a method of improving the adhesion of ceramic coating films has not been developed in the field, which can achieve good adhesion on aluminum or steel substrates without sandblasting when the thickness of the coating film is as high as 10 μm

Method used

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  • Ceramic coating film composite and preparation method thereof
  • Ceramic coating film composite and preparation method thereof
  • Ceramic coating film composite and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0084] Preparation of Adhesion Promoters

[0085] In the present invention, when preparing the adhesion promoter, the molar ratio of the silane coupling agent and the compound containing the imidazolidinone ring can be theoretically calculated (equivalent ratio = 1: 1), but in order to ensure that the imidazolidinone ring When connected to the coupling agent, an excess of the coupling agent is often adopted. Generally, the molar ratio of the coupling agent / imidazolidinone-containing compound can be set at 1 / 0.9 to 1 / 0.5, usually at 1 / 0.8, The coupling agent that fails to connect the imidazolidinone ring will become one of the effective components of the B component, which will be hydrolyzed to form silanol, and then polycondensed to form a coating film composition.

[0086] The above reaction for preparing the adhesion promoter can be carried out in a four-necked flask with a stirring bar, a condenser and a thermometer, and the whole reaction process is protected by nitrogen...

Embodiment

[0129] The present invention is further described below in conjunction with specific examples. However, it should be understood that these examples are only used to illustrate the present invention and not to limit the scope of the present invention. The test methods for which specific conditions are not indicated in the following examples are generally in accordance with conventional conditions, or in accordance with the conditions suggested by the manufacturer. All percentages and parts are by weight unless otherwise indicated.

[0130] Evaluation method of coating film adhesion

[0131] (i) Initial adhesion, according to GB / T9286-1998, using a 2mm scratcher and 3M 6100 tape for testing;

[0132] (ii) Secondary adhesion, place the test plate in boiled pure water, take it out after boiling for 4 hours, let it dry for 10 minutes, and test according to the same standard as (i).

Embodiment 1-3

[0144] A component is the same as that in Comparative Example 1-2, the difference is that different amounts of adhesion promoters have been added in the B component, and the adhesion promoter is composed of β-(3,4-epoxycyclohexyl) Prepared from ethyltrimethoxysilane and N-hydroxyethyl-2-imidazolidinone (V-1) at a molar ratio of 1 / 0.8.

[0145] The same paint ratio, curing conditions and plate making method as in Comparative Example 1-2. The test results of the adhesion of the comparative example and the embodiment are shown in Table 2 above.

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Abstract

The invention relates to a ceramic coating film composite and a preparation method thereof. The ceramic coating film composite comprises the following components: a component A and a component B, wherein the component A comprises a sol, a tinting pigment, water and an auxiliary; and the component B comprises at least one silane coupling agent with an epoxy functional group and an adhesion promoter formed by the reaction of compounds including iminazole silane ketone ring; the weight ratio of the component A to the component B is 2:1 to 1:1.5; and the total weight ratio of the sol particle in the component A and the component B is 15:40 to 40:100. The invention also provides a method for preparing the ceramic coating film composite.

Description

technical field [0001] The invention relates to a ceramic coating composition, in particular to a ceramic coating composition for improving the adhesion of a ceramic coating on aluminum and steel substrates and a preparation method thereof. Background technique [0002] Ceramic coatings prepared based on the sol-gel method have the advantages of simple process and low processing temperature, and the coating film thus prepared has the advantages of excellent temperature resistance, weather resistance, good corrosion resistance and wear resistance, etc. It is widely used on the surface of metal substrates, such as aluminum or steel surface coating. However, when ceramic coatings are applied on the surface of aluminum, aluminum alloy or steel substrates, the substrate must be subjected to sandblasting and roughening treatment in order to improve the adhesion of the coating film, otherwise the ceramic coating film, especially when the coating film thickness is greater than 10 μm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/06C09D183/08C09D7/12
Inventor 郭家振潘军辉潘士祥林宏骞唐娟刘金峰
Owner 上海金力泰化工股份有限公司
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