Method for preparing nanometer hardened organic silicon coating

A silicone coating, silicone technology, applied in the direction of coating, etc., to achieve the effect of high hardness and good corrosion resistance

Inactive Publication Date: 2011-03-23
SHENZHEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Preparation of coating by pulling method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The ratio of raw materials is: 27 grams of ethyl orthosilicate, 18 grams of KH570 (γ-methacryloxypropyl trimethoxysilane), 100 grams of absolute ethanol, 10 grams of deionized water, and 0.1 grams of hydrochloric acid. After mixing, use a magnetic stirrer to stir for 60 minutes, seal the mixed solution and let it stand. After 24 hours, heat the solution to 80°C and reflux for 120 minutes, continue heating, and keep it warm for 60 minutes after the solution is heated to 100°C to obtain nano-hardened silicone. Sol. The sol was prepared by the pulling method coating, the pulling speed was 10 cm / min, the number of pulling was 10 times, and the pulling gap was 5 minutes. Then put the coating into an oven for heat treatment, the treatment temperature is 80°C, and the heat treatment time is 30 minutes. The test shows that the pencil hardness of the coating is greater than 5H, and the adhesion and corrosion resistance are good.

Embodiment 2

[0022] The ratio of raw materials is: 27 grams of ethyl orthosilicate, 10 grams of monomethyltriethoxysilane, 4 grams of KH570 (γ-methacryloxypropyl trimethoxysilane), 100 grams of absolute ethanol, 10 grams of deionized water, 0.1 grams of hydrochloric acid. After mixing, use a magnetic stirrer to stir for 60 minutes, seal the mixed solution and let it stand. After 24 hours, heat the solution to 80°C and reflux for 120 minutes, continue heating, and keep it warm for 60 minutes after the solution is heated to 100°C to obtain nano-hardened silicone. Sol. The sol was prepared by the pulling method coating, the pulling speed was 10 cm / min, the number of pulling was 10 times, and the pulling gap was 5 minutes. Then put the coating into an oven for heat treatment, the treatment temperature is 80°C, and the heat treatment time is 30 minutes. The test shows that the pencil hardness of the coating is greater than 6H, and the adhesion and corrosion resistance are good.

Embodiment 3

[0024] The ratio of raw materials is: 27 grams of ethyl orthosilicate, 10 grams of monomethyltriethoxysilane, 4 grams of KH570 (γ-methacryloxypropyl trimethoxysilane), 100 grams of absolute ethanol, 10 grams of deionized water, 0.2 grams of acetic acid. After mixing, use a magnetic stirrer to stir for 60 minutes, seal the mixed solution and let it stand. After 24 hours, heat the solution to 80°C and reflux for 120 minutes, continue heating, and keep it warm for 60 minutes after the solution is heated to 100°C to obtain nano-hardened silicone. Sol. The sol was prepared by the pulling method coating, the pulling speed was 10 cm / min, the number of pulling was 10 times, and the pulling gap was 5 minutes. Then put the coating into an oven for heat treatment, the treatment temperature is 80°C, and the heat treatment time is 30 minutes. The test shows that the pencil hardness of the coating is greater than 6H, and the adhesion and corrosion resistance are good.

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Abstract

The invention provides a method for preparing a nanometer hardened organic silicon coating. The method is mainly characterized by comprising the following steps of: mixing ethyl orthosilicate, deionized water and various silane coupling agents (such as KH560, methyl triethoxysilane and the like) according to a proportion; adding absolute ethyl alcohol, stirring by using a magnetic stirrer, and adding an inorganic acid catalyst during the stirring; and heating and condensing the solution to obtain organic silicon composite coating solution. The solution can be used for coatings on the surface of substrates such as glass, metal, plastic and the like, and a coating is obtained by a pulling process. The obtained coating has high hardness, wear resistance and weather resistance and can be used for protecting the surface of various substrates. The method has the characteristics that: the preparation process is simple; and feasible and mass production can be realized.

Description

technical field [0001] The invention relates to a preparation method of a nano-hardened organic silicon coating, which can be used to prepare a high-hardness nano-hybrid coating and belongs to the field of organic-inorganic hybrid materials. Background technique [0002] Nano-hardened silicone coatings can be widely used on the surfaces of spectacle lenses, automobile front lampshades, instrument scale plates, optical disks, and special architectural window glass to protect the substrate, and at the same time have the performance of hardening and wear resistance, prolonging the durability of the substrate. service life. [0003] Traditional material surface coatings are mainly prepared from coatings synthesized by resins such as amino resins, polyurethane resins, alkyd resins, thermosetting acrylic resins, and phenolic resins, and the main components are organic matter. The coating generally has the disadvantages of poor wear resistance and weather resistance, and not high ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/06C03C17/30C08J7/04
Inventor 罗仲宽王芳曹慧群蔡弘华
Owner SHENZHEN UNIV
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