超细全硫化粉末丁腈橡胶对聚氯乙烯性能的影响  

EFFECT OF ULTRAFINE VULCANIZED POWDERED NITRILE RUBBER ON THE PROPERTIES OF PVC

作　　者：王庆国[1] 张晓红[2] 桂华[1] 东为富[1] 赖金梅[2] 高建明[2] 宋志海[2] 乔金樑[2] 

机构地区：[1]北京化工大学材料学院,北京100029 [2]中国石油化工股份有限公司北京化工研究院,北京100013

出　　处：《高分子学报》2007年第4期332-336,共5页Acta Polymerica Sinica

基　　金：国家重大基础研究专项经费(项目号2005CB623800)资助项目

摘　　要：制备了PVC/超细全硫化粉末丁腈橡胶(NBR-UFPR)二元、PVC/NBR-UFPR/纳米CaCO3三元复合材料,研究了3种NBR-UFPR(平均粒径分别为150nm、90nm和70nm)对硬质PVC性能的影响.测试结果表明,3种NBR-UFPR均可同时提高硬质PVC的热稳定性、耐热性和韧性.透射电镜(TEM)照片显示,3种NBR-UFPR均能以单个粒子均匀分散在PVC基体中,NBR-UFPR与PVC相间的界面积大于传统的PVC/弹性体共混物.PVC/NBR-UFPR/纳米CaCO3三元复合材料具有更高的热稳定性、耐热性和韧性,TEM照片显示,在三元复合材料中,分散相粒子间的平均距离进一步减小.Several PVC/uhrafine vulcanized powdered nitrile rubber （NBR-UFPR） binary composites and PVC/NBR-UFPR/nano-CaCO3 ternary composites were prepared. TEM images showed that three kinds of NBR-UFPRs, P-248 （about 150 nm,33%AN）,P-6387 （about 90 nm,33%AN） and P-26 （about 70 nm,26%AN）,were dispersed well in PVC matrix.Those NBR-UFPRs can increase the toughness, heat resistance and thermal stability of PVC/NBR-UFPR binary composites simultaneously. At the same time,it was found that the addition of CaCO3 nanoparticles （40 nm） can further increase the toughness, heat resistance and thermal stability of PVC/NBR-UFPR/nano-CaCO3 ternary composites, and TEM images showed that the distance between two particles （PVC ligament thickness） become shorter. It was discussed why the toughness, heat resistance and thermal stability of PVC composites can be improved simuhaneously.

关 键 词：硬质PVC 超细全硫化粉末橡胶 热稳定性 玻璃化转变温度 增韧 

分 类 号：TQ333.7[化学工程—橡胶工业]