iPP/sPP/云母三元共混物的制备与性能  

Structure and Mechanical Properties of iPP/sPP/Mica Blends

作　　者：张淑娟[1] 张坦[1] 邹晓轩[1] 杨伟[1] 杨鸣波[1] 

机构地区：[1]四川大学高分子科学与工程学院,高分子材料工程国家重点实验室,四川成都610065

出　　处：《高分子材料科学与工程》2010年第8期94-97,共4页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(10590351);973项目(2005CB623808)资助

摘　　要：通过不同的加工过程制备了等规聚丙烯(iPP)/间规聚丙烯(sPP)/云母(mica)三元共混物,研究了云母尺寸及加工过程对共混物力学性能的影响。研究结果表明:(1)云母加入后共混物的屈服强度得到提高,交联sPP与否对共混物屈服强度的影响不大;(2)云母的加入同样提高了共混物的冲击强度,云母尺寸较小时冲击强度提高更为显著,未交联sPP的试样比交联了sPP的试样提高要大一些;(3)差示扫描量热分析(DSC)结果表明,对于iPP组分,云母的引入提高了其结晶温度,使得其结晶更完善;(4)SEM结果表明云母主要分布在iPP相中,尺寸较小的云母分布较为均匀。The influence of the size of mica and different processing methods on the mechanical properties of isotactic polypropylene （iPP） /syndiotactic polypropylene （sPP）/mica blends was studied. The results show that （1）the yield strength of iPP/sPP/mica blends is improved by mica, and crosslinked sPP has slight influence in the blends; （2）the impact strength of iPP/sPP/mica blends is also improved by mica. The smaller size of mica introduced into blends, the better impact strength of blends is obtained; （3） differential scanning calorimetry （DSC） results show that as the existence of mica the melting temperature and the crystallization： tempcrature of iPP component increase; （4）the results of scanning electron microscope （SEM） show that the mica is located in iPP phase, however, the location of the smaller mica is even.

关 键 词：三元共混物 交联 力学性能 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]