HIPS-g-MA共聚物对HIPS/PC共混物相容性、形态和拉伸性能的影响  

THE EFFECTS OF HIPS-g-MA COPOLYMER ON THE COMPATIBILITY, MORPHOLOGY AND TENSILE PROPERTIES OF THE HIPS/PC BLEND

作　　者：刘万军[1] 王茁[2] 杨慧丽[1] 陈广新[1] 刘景江[1] 

机构地区：[1]中国科学院长春应用化学研究所,高分子物理与化学国家重点实验室,吉林长春130022 [2]不详

出　　处：《高分子材料科学与工程》2002年第6期111-114,共4页Polymer Materials Science & Engineering

基　　金：国家重点基础研究发展规划--通用高分子材料高性能化的基础研究 (G19990 64 80 0 );聚烯烃加工过程中的化学反应及其与性能间的关系 (G19990 64 80 6)

摘　　要：研究了 HIPS/ PC共混物的相容性及 HIPS- MA对 HIPS( 30 ) / PC( 70 )共混物的相容性、形态和拉伸性能的影响。DSC研究结果表明 ,HIPS/ PC共混物中 PS的玻璃化转变温度 ( Tg)不随组成而变化 ,而PC的 Tg 随其质量分数的降低逐渐向低温移动 ,说明 HIPS/ PC是部分相容体系。通过 DSC、扫描电镜形态观察和拉伸性能测试结果发现 ,当 HIPS- g- MA的含量低于 7.5 %时 ,共混物的相容性改善不明显 ,当其含量达到 7.5 %时 ,对共混物有明显的乳化作用 ,说明饱和的界面浓度在 7.5 %左右。HIPS- g- MA接枝共聚物在 HIPS( 30 ) / PC( 70 )The effects of HIPS-g-MA copolymer on the compatibility, morphology and tensile properties of the HIPS/PC blend were studied by DSC, SEM and tensile properties test. The PC/HIPS blend is partial compatible system due to the results of DSC that the T g of PS in HIPS/PC doesn't change with the composition of blend and the T g of PC increases with the increase in its fraction in mass. The HIPS-g-MA copolymer as a compatibilizer of PC/HIPS blend was prepared. The results of DSC, SEM and tensile properties show that the changes in compatibility is not obvious as the content of HIPS-g-MA below 7.5% and it plays a obvious emulsification as the content of HIPS-g-MA match 7.5%. This fact reflects that the saturated concentration of compatibilizer in interface of PC(70)/HIPS(30) blend is 7.5%. The emulsification of HIPS-g-MA copolymer in compatibility of PC/HIPS blend may be resulted by formation of the block copolymer of HIPS-b-PC during the blend processing.

关 键 词：HIPS-g-MA 共聚物 HIPS/PS 共混物 相容性 形态 拉伸性能 影响 高抗冲聚苯乙烯 马来酸酐 接枝共聚物 聚碳酸酯 共混增容剂 

分 类 号：TQ325.2[化学工程—合成树脂塑料工业]