Weather-proofing anti-scratch ultraviolet cured hard coating composite
A technology of anti-scratch and hard coating, applied in the direction of coating, etc., can solve the problems of insignificant anti-scratch effect, low hardness, insufficient hardness, etc., and achieve obvious wear-resistant and anti-scratch effect, high gloss, and weather resistance good sex effect
Inactive Publication Date: 2013-02-06
武汉羿阳科技有限公司
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Problems solved by technology
[0004] At present, the main problems of UV-cured hard coatings on the market are as follows: 1. Low hardness
The pencil hardness is below 6H, although it can meet most of the requirements, but it seems that the hardness is not enough when the use conditions are harsh.
2. Poor weather resistance
Most of the coating film will crack during the process of exposure to sunlight, which seriously damages the appearance of the product
3. The anti-scratch effect is not obvious, and the solvent resistance is poor
After long-term use, the coating film will appear "whitening" and "fogging", which will seriously affect the wear resistance of the coating
Method used
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example 1
[0023] Example 1, its mass percentage is composed of: 8% acrylate elastomer, 40% urethane acrylate, 15% trifunctional group acrylate, 16% aliphatic urethane acrylate, 10% viscosity accelerator, Nano-silica-4HBAGE is 5%, functional additives are 1%, and photoinitiators are 5%.
example 2
[0024] Example 2, its mass percentage is composed of: 8% acrylate elastomer, 45% urethane acrylate, 15% trifunctional group acrylate, 16% aliphatic urethane acrylate, 5% viscosity accelerator, Nano-silica-4HBAGE is 5%, functional additives are 1%, and photoinitiators are 5%.
example 3
[0025] Example 3, its mass percentage is composed of: 8% acrylate elastomer, 30% urethane acrylate, 20% trifunctional group acrylate, 16% aliphatic urethane acrylate, 15% viscosity accelerator, Nano-silica-4HBAGE is 5%, functional additives are 1%, and photoinitiators are 5%.
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Abstract
The invention relates to a weather-proofing anti-scratch ultraviolet cured hard coating composite which comprises polyurethane acrylate, acrylate, aliphatic polyurethane acrylate, viscous accelerant, functional assistant and photoinitiator, or acrylate elastomer, polyurethane acrylate, acrylate, aliphatic polyurethane acrylate, viscous accelerant, nanosized silica-4HBAGE, functional assistant and photoinitiator. An acrylate high-crosslinking system in a formula can provide high hardness for a coating and has good weather and ageing resistance, and a polyurethane system can provide abrasion resistance, flexibility and low temperature resistance as well as water resistance, saline resistance and solvent resistance for the coating. The viscous accelerant can improve the levelling property of the coating, and the nanosized silica and functional assistant can enhance the anti-scratch and easy-to-clean characteristics of the coating. The composite can be widely applied to the fields of plastic, films and metal cover finish, varnish on carpentry surfaces, optical glass and the like, and has protection, attractiveness and decoration effects.
Description
technical field [0001] The invention relates to a weather-resistant and scratch-resistant ultraviolet curing hard coating composition, in particular to an ultraviolet curing hard coating composition which can be coated on a transparent PET film. Background technique [0002] Hard coatings are used in the fields of automotive dashboards and electronic components to improve the wear resistance, solvent resistance, weather resistance and aesthetics of plastic surfaces, and can also assist special additives to achieve matte, stain resistance and antistatic effects. With the improvement of people's requirements for the quality of life, the products are not only of good quality but also beautiful and durable, and the hard coating technology has also been developed rapidly. [0003] UV-cured coatings generally have high cross-linking density, and coating films with better mechanical properties can be obtained, and the production process is simple, the production efficiency is high,...
Claims
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IPC IPC(8): C09D4/02C09D4/06C09D7/12
Inventor 王传广龙汉平徐伟
Owner 武汉羿阳科技有限公司
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