着色剂对PC校色的影响  

Effect of Colorants on PC Color Correction

作　　者：李志 钱富娟 张璐 张洪涛 Li Zhi;Qian Fujuan;Zhang Lu;Zhang Hongtao(Zhejiang Petrochemical Co.,Ltd.,Zhoushan 316000,China)

机构地区：[1]浙江石油化工有限公司,浙江舟山316000

出　　处：《工程塑料应用》2023年第3期142-145,共4页Engineering Plastics Application

摘　　要：聚碳酸酯(PC)产品一般呈微黄色,并且在使用过程中容易老化发生黄变现象,这严重影响了制品的外观,通常在PC挤出造粒前加入一定量的着色剂来改变产品的颜色从而改善制品的黄变。采用蓝色和蓝紫色的着色剂进行了PC基料校色试验,通过改变着色剂配比和加入量调整PC色度值的方法研究了着色剂对PC颜色的影响。结果表明,蓝剂和蓝紫色着色剂复配使用产品颜色更佳;基料色度L值大于70且b值小于6时具备校色的要求;着色剂对PC冲击性能和分子量的影响不大。Polycarbonate(PC)products are generally slightly yellow,and are prone to yellowing due to aging during use,which seriously affects the appearance of products.Usually,a certain amount of colorant is added before the extrusion and granulation of PC change the color of products to improve the yellowing of products.The color correction test of PC base material was carried out with blue and blue-violet colorants.The effect of colorants on the color of PC was studied by changing the ratio and amount of colorants and adjusting the chromaticity value of PC.The results show that the color of the product with blue and blueviolet colorants is better.When the base material chromaticity L value is greater than 70 and the b value is less than 6,the requirements for color correction are met.The colorant has little effect on the impact property and molecular weight of PC.

关 键 词：聚碳酸酯 着色剂 色度 冲击性能 分子量 

分 类 号：TQ323.4[化学工程—合成树脂塑料工业]