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Organic silicon transparent wear-proof hardened coating and mfg. process thereof

A technology of organosilicon and hard coatings, which is applied in the direction of coatings, etc., can solve the problems that it is difficult to obtain colorless and transparent polymers, and it is not conducive to the storage of coating components at room temperature, so as to reduce energy consumption, reduce equipment investment, and improve wear resistance. Good results

Inactive Publication Date: 2006-03-29
厦门威亮光学涂层技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The commonly purchased silica sol is a micro-emulsion white translucent liquid, and it is difficult to obtain a colorless and transparent polymer
Another patent, CN1410476A, discloses a method using BPO and hexamethylenediamine as a curing agent. This curing agent is easy to participate in curing reaction at room temperature. If it is made into a one-component coating, it is not conducive to the room temperature preservation of the coating components.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Example 1, in a 250ml three-necked bottle, add 8ml of tetraethoxysilane, 30ml of methyltriethoxysilane, 10ml of dimethyldiethoxysilane, 5ml of acetic acid, and then add 10ml of isopropanol, Add 10ml of ethylene glycol ether, stir well, add 20ml of deionized water dropwise at room temperature, it is found that the solution first becomes turbid, and then becomes transparent and clear. After 2 hours, add 10ml of γ-(2,3-glycidoxy)propyltrimethoxysilane and 2ml of water, mix well, and let it stand at room temperature for 6 days to mature. After 7 days, 2 ml of a 10% aqueous solution of tetrabutylammonium hydroxide was added. Then add two drops (about 0.04 ml) of boron trifluoride etherate as a curing accelerator.

[0041] Wash the polycarbonate plastic sheet with a thickness of 1.2mm in a cleaning solution to remove grease and dry it. Then immerse in the above-mentioned coating composition, pull out the liquid surface at a speed of 25-30cm / min to obtain a coating with a th...

Embodiment 2

[0042] Example 2, in a 250ml three-necked bottle, add 30ml of methyltriacetoxysilane, 20ml of dimethyldiethoxysilane, then add 10ml of isopropanol, 10ml of ethylene glycol ethyl ether, stir well, in 20ml of deionized water was added dropwise at room temperature. After 2 hours, add 10ml of γ-(2,3-glycidoxy)propyltrimethoxysilane and 2ml of water, mix well, and let it stand at room temperature for 6 days to mature. After 6 days, 2 ml of a 10% aqueous solution of tetrabutylammonium hydroxide was added. Then add two drops (about 0.04 ml) of boron trifluoride etherate as a curing accelerator.

[0043] The same method as in Example 1 was used to prepare a hardened coating on a plastic sheet with a hardness of 3H.

Embodiment 3

[0044] Example three, in a 250ml three-necked bottle, add 8ml of tetraethoxysilane, 30ml of methyltriethoxysilane, 10ml of dimethyldiethoxysilane, 5ml of acetic acid, then add 10ml of isopropanol, Ethylene glycol ether 10ml, stir well. After 2 hours, add 10ml of γ-(2,3-glycidoxy)propyltrimethoxysilane and 2ml of water, mix well, let stand at room temperature for 6 days, and let it mature for 6 days.

[0045] The same method as in Example 1 was used to prepare a hardened coating on a plastic sheet with a hardness of 3H.

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Abstract

A transparent antiwear and hardening organosilicon paint for the resin lens is prepared from tetraalkoxysilane, trialkoxysilane and dialkoxysilane through mixing, acid catalytic hydrolyzing in solvent, polymerizing, adding coupling agent, ageing, and adding solidifying agent and solidifying promoter. Its advantages are high hardness and antiwear nature and long storage time.

Description

technical field [0001] The present invention relates to a coating, in particular to a coating suitable for the surface protection of resin lenses and other transparent or opaque plastics, as well as anti-corrosion and wear-resistant coatings for metal surfaces, metal plated parts, insulation and moisture-proof coatings for electronic components Organosilicon transparent wear-resistant and hardened coatings, such as anti-weather coatings for stone materials, and a production method thereof. Background technique [0002] Compared with optical glass, optical plastic has the characteristics of impact resistance, small specific gravity, low price, and easy processing and molding. It has developed rapidly in recent years, but it also has disadvantages such as poor wear resistance and heat resistance; while cross-linked optical resins such as CR-39 have improved heat resistance and solvent resistance, but wear resistance is still poor. Therefore, it is particularly important to ha...

Claims

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Application Information

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IPC IPC(8): C09D183/04
Inventor 张崇照
Owner 厦门威亮光学涂层技术有限公司
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