紫外光辐照交联聚丙烯的结晶行为研究  

Study on Crystallization Behaviors of UV-Irradiated Crosslinked Polypropylene

作　　者：张成骁 唐龙祥 李丁可 Zhang Chengxiao;Tang Longxiang;Li Dingke(School of Chemistry and Chemical Engineering,Hefei Universityof Technology,Hefei,Anhui,230041)

机构地区：[1]合肥工业大学化学与化工学院,安徽合肥230041

出　　处：《现代塑料加工应用》2022年第6期36-39,共4页Modern Plastics Processing and Applications

摘　　要：以紫外发光二极管(UV-LED)为光源、二苯甲酮(BP)为光引发剂、三羟甲基丙烷三甲基丙烯酸酯(TMPTMA)为助交联剂,制备了一系列不同交联度的紫外光辐照交联聚丙烯(PP),并利用Mo法和Kissinger法研究了其非等温结晶过程。结果表明:Mo法比Kissinger法更适用于研究紫外光辐照交联PP的非等温结晶过程,紫外光辐照不会改变PP的晶型。BP、TMPTMA和过高的交联度会抑制晶粒的生长。Using ultraviolet light-emitting diode(UV-LED) as light source, benzophenone(BP) as photoinitiator and trimethylolpropane trimethacrylate(TMPTMA) as co-crosslinking agent, a series of UV-irradiated crosslinked polypropylene(PP) with different cross-linking degrees were prepared, and their non-isothermal crystallization process were studied by Mo method and Kissinger method. The results show that Mo method is more suitable than Kissinger method to study the non-isothermal crystallization process of UV-irradiated crosslinked PP. Crystalline form of PP is unchanged by UV irradiation. BP, TMPTMA and high cross-linking degree can inhibit grain growth.

关 键 词：聚丙烯 紫外光辐照 交联度 晶体结构 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]