极性单体熔融接枝改性聚丙烯的表面亲水性能研究  

Study on hydrophilicity of polypropylene surface melt grafted by polar monomers

作　　者：魏玉坤[1] 柯加良[2] 赵建青[1] 

机构地区：[1]华南理工大学材料学院,广州510640 [2]广州吉必时科技实业有限公司,广州510510

出　　处：《化工新型材料》2007年第2期58-60,65,共4页New Chemical Materials

基　　金：广州市科技攻关项目(No:2005Z3-D0331)

摘　　要：通过在双螺杆挤出机中熔融接枝改性PP,研究了以1,1-二叔丁基过氧-化3,3,5-三甲基环己烷(LQ-CH335)为引发剂,MAH、AA、MAA、AM和GMA为接枝单体,St为接枝共单体的多单体熔融接枝体系对PP制品表面可涂敷性能的影响,并利用静态水接触角进行表征。研究结果表明,添加极性单体可以有效降低水接触角,例如:当GMA、St和LQ-CH335含量分别为1.0%(质量分数,下同)、1.0%和0.3%时,PP水接触角从108.6°降低到71.2°;同时在市场上的PP保险杠料中添加10%接枝PP,可以降低水接触角大约20°,同时力学性能影响不大。The influence of MAH,AA,MAA,AM and GMA on hydrophilicity of PP product surface was studied by reaction extrusion process in the twin screw extruder, where 1,1-bis（tert-butyl peroxy）-3,3,5-trimethylcyclohexane （LQ-CH335） as the initiatory and St as the graft co-monomer. The results showed that the contact angle of water on PP product surface decreased from 108.6° to 71.2° , when using GMA 1.0%, St 1. 0% and LQ-CH335 0.3%. The hydrophilicity of PP bumper surface can be obviously improved by blending the bumper with the 10% （by weight）grafted PP, and the contact angle of water can be decreased about 20°, while the mechanical properties remains.

关 键 词：聚丙烯 接触角 保险杠 塑料用涂料技术 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]