共混工艺对PP／POE／SiO2三元复合体系韧性的影响  

Influence of Blending Technology on Toughness of PP/POE/SiO_2 Composites

作　　者：丁兴艳[1,2] 伍玉娇[1,2] 肖贤斌[1,2] 王珏[1,2] 蒙日亮[1,2] 

机构地区：[1]贵州大学材料科学与冶金工程学院,贵州贵阳550003 [2]贵州省材料技术创新基地,贵州贵阳550014

出　　处：《中国塑料》2008年第3期46-48,共3页China Plastics

基　　金：国家863计划项目(2003AA32X230);贵州省自然科学基金项目(黔科合计2004(3045)号);贵州省工业攻关项目(黔科合GY字(2006)3013)资助

摘　　要：研究了4种不同共混工艺对 PP/POE/SiO_2三元复合体系韧性的影响。通过不同的加料顺序和挤出次数对PP、POE、SiO_2进行熔融共混后挤出注塑,并对其进行力学性能测试和 SEM 观察。研究结果表明:二次挤出工艺比一次挤出工艺得到的共混物的韧性好。形成"核壳"结构界面的材料的韧性最高。不同共混工艺下,POE/SiO_2先挤出,再与 PP 挤出,注塑得到的共混物的冲击强度最高;其次是 PP/SiO_2挤出,再与 POE 挤出,注塑得到的共混物;再次是 PP/POE 挤出,再与 SiO_2挤出,注塑得到的共混物;最后是 PP/POE/SiO_2一起挤出,注塑得到的共混物。Influence of blending procedure on the toughness of PP/POE/SiO2 composites was studied. The samples were obtained through injection molding after extrusion blending of different procedures： （i） POE and SiO2 were blended first and the mixture blended with PP; （ii） PP and SlOe were blended first and the mixture blended with POE; （iii） POE and PP were blended first and the mixture was blended with SlOe; （iv） the three components were blended at the same time. The toughness of the composites was in the order （i） 〉 （ii） 〉 （iii） 〉 （iv）. If a composite was extrusion blended one more time, better toughness was obtained.

关 键 词：共混工艺 核壳结构 界面 冲击强度 

分 类 号：TQ320.7[化学工程—合成树脂塑料工业]