黑色浆对丙烯酸紫外光固化涂料性能的影响

Effect of black paste on properties of ultraviolet-curable acrylic paint

以黑色紫外光(UV)可固化丙烯酸体系的漆膜附着力和耐磨性为主要评价指标,考察了不同单体、树脂、光引发剂以及黑色浆添加量和光固化能量对漆膜性能的影响。结果表明,当黑色浆小于7%(质量分数),通过选择合适的树脂、引发剂及固化能量可满足体系的深层固化要求;当色浆量过大,固化后底层的双键转化率低,造成涂层仍含大量低聚合度的聚合物,黑色涂层的整体耐化学品与耐磨性能下降。

The effects of different monomers,resins,and photoinitiators as well as the amount of black paste and curing energy on the properties of a ultraviolet-curable black acrylic paint were studied by evaluating the adhesion strength and wear resistance of its cured coating.The results showed that the deep curing of the system can be improved by selecting suitable resin,photoinitiator,and curing energy when the amount of black paste is less than 7wt.%.However,if there is too much black paste,the conversion rate of carbon-carbon double bond at the bottom of the cured coating is low,resulting in the residue of a large number of polymers with low degree of polymerization,and the reduction of overall wear resistance and chemical resistance of the black coating.