Wear-resistant coating material without primer on polycarbonate surface and preparation method thereof

A technology of polycarbonate and wear-resistant coating, applied in the direction of coating, etc., can solve the problems of increased defect rate and uneconomical industrial application, and achieve the effect of simple implementation process

Active Publication Date: 2013-01-30
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

However, in terms of process operation, such a coating needs to be dipped twice to achieve a good adhesion effect. The process time consumption is twice that of the coating material without primer, and the defective rate increases by about 10%. As an industrial application, it is obvious is uneconomical

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045]In a 250ml three-neck round bottom flask, add pH = 2, 36g of acidic silica sol with a solid content of 34%, 133g of methyltriethoxysilane, 6g of tetraethoxysilane, dimethyldiethoxysilane 6g, 15g of deionized water, hydrolyzed naturally exothermic reaction to about 40°C to form a uniform and transparent component, then add 3g of acetic acid, heat up to 82°C and reflux for 2h, at 82°C, add polycarbonate dicarbonate with a molecular weight of 1000 6g of polyalcohol, continued to react for 30min, cooled, then added 12g of γ-(2,3-glycidoxy)propyltrimethoxysilane at 50°C, after cooling to room temperature, finally added 70g of isopropanol, ethylene di Alcohol butyl ether 18g, organosilicon leveling agent 0.5g, tetrabutylammonium acetate 0.5g, obtained organosilicon wear-resistant coating material, denoted as A1.

[0046] Dip a polycarbonate plate with a thickness of 1mm, a length of 110mm, and a width of 40mm into the above-mentioned coating material, pull it vertically upward...

Embodiment 2

[0051] In a 250ml three-neck round bottom flask, add 70g of acidic silica sol with pH=2, solid content of 34%, and 133g of methyltriethoxysilane. After hydrolysis, the natural exothermic reaction reaches about 40°C to form a uniform and transparent composition. Then add 3g of acetic acid, heat up to 82°C for reflux reaction for 2h, at 82°C, add 2.7g of polycarbonate diol with a molecular weight of 800, continue the reaction for 30min, cool, then add γ-(2 , 20g of 3-glycidoxy)propyltrimethoxysilane, after cooling to room temperature, finally add 90g of isopropanol, 25g of butyl glycol ether, 0.2g of silicone leveling agent, 0.5g of tetrabutylammonium hydroxide, Obtained silicone wear-resistant coating material, denoted as A2.

Embodiment 3

[0053] In a 250ml three-neck round bottom flask, add 6g of acidic silica sol with pH=2, solid content of 34%, 133g of methyltriethoxysilane, and 36g of deionized water, after hydrolysis, the natural exothermic reaction reaches about 40°C Obtain a uniform and transparent component, then add 0.5 g of 1% hydrochloric acid aqueous solution, heat up to 82 ° C and reflux for 2 h, at 82 ° C, add 2.7 g of polytetrahydrofuran diol with a molecular weight of 2000, continue the reaction for 30 min, cool, and then Add 12g of γ-(2,3-glycidoxy)propyltrimethoxysilane at 50°C, after cooling to room temperature, finally add 90g of isopropanol, 20g of butyl glycol ether, and 0.2g of silicone leveling agent , N, N-dimethylbenzylamine 0.5g, obtained a silicone wear-resistant coating material, denoted as A3.

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Abstract

The invention relates to a wear-resistant coating material without a primer on a polycarbonate surface and a preparation method thereof, in particular to a coating material. The invention provides a wear-resistant coating material without a primer on a polycarbonate surface, which can adhere to the polycarbonate surface without the primer, can increase the surface hardness of the polycarbonate plastic and has a wear-resistant function, and a preparation method thereof. The wear-resistant coating material is prepared from at least two functionalities of alkoxy silane and a composition thereof, acidic silica sol, water, an acid catalyst, a diluting agent, polymer polyol, a silane coupling agent, a flatting agent and a curing agent. The preparation method comprises the following steps: mixing the at least two functionalities of alkoxy silane and the composition thereof, the water and the acidic silica sol for reacting; adding the acid catalyst; heating for refluxing; adding the polymer polyol for continuously refluxing; and after cooling, adding the silane coupling agent, the curing agent, the flatting agent and the diluting agent to obtain the wear-resistant coating material without the primer on the polycarbonate surface.

Description

technical field [0001] The invention relates to a coating material, in particular to a wear-resistant coating material with no primer on the surface of polycarbonate and a preparation method thereof. Background technique [0002] Compared with optical glass, polycarbonate 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. Therefore, the hardening treatment of polycarbonate and other optical plastic surfaces is particularly important. [0003] The main component of strengthening fluid is generally silicone resin. Adhesion of silicone resins to polycarbonate surfaces is difficult. It is usually necessary to apply a primer before dipping the silicone to ensure the adhesion of the silicone to the polycarbonate plastic surface. [0004] Clark of the U.S. Dow Corning Corporation used coll...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D183/04C09D7/12C08G77/06C08J7/04C08L69/00
Inventor 张崇照陈为都江星
Owner 厦门威亮光学涂层技术有限公司
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