光引发剂对黑色UV固化有机硅材料固化速率的影响  

Influence of Photoinitiator on Curing Rate of Black UV Cured Coating

作　　者：杜现礼[1] 胡碧茹[1] 刘长利[1] 吴文健[1] 

机构地区：[1]国防科技大学材料工程与应用化学系,湖南长沙410073

出　　处：《新技术新工艺》2008年第9期56-58,共3页New Technology & New Process

基　　金：国家"863"计划支持项目(2007AA809310D)

摘　　要：以有机硅改性的聚氨酯丙烯酸酯为主体树脂配制黑色UV固化涂料,考察8种光引发剂及其复配体系对涂料固化速率的影响,测量不同引发剂体系的固化时间。结果表明:复配型引发剂引发效率较高,且含有ITX(4-Isopropy+lthioxanthone)的引发剂体系引发效率高于其它体系。这是由于4-异丙基硫杂蒽酮受取代基的影响,其光学行为发生了变化,在体系中起了光敏剂的作用。Black UV cured coating was prepared using polysiloxane urethane acrylate(PSUA) as a prepolymer,to analyses the influence of 8 kinds of photoinitiators and their compounds on curing rate.Curing time of various systems was tested.The results show that the initiating efficiency of compound initiators is higher than single initiators,and the compound initiators comprising ITX is higher than the others.The reasons for this is that ITX(4-Isopropylthioxanthone) are affected by the substituent group and changed its optics behavior,which plays a photosensitizer role in the systems.

关 键 词：光引发剂 UV固化 黑色颜料 

分 类 号：TQ630.7[化学工程—精细化工]