HIPS/PP熔融反应共混及其动态力学性质  

Study on the Melting Reactive Mixing and Dynamic Mechanical Properties of HIPS/PP Blends

作　　者：刘万军[1] 杨军[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开放实验室,长春130022

出　　处：《应用化学》1998年第4期54-58,共5页Chinese Journal of Applied Chemistry

基　　金：国家八五攻关项目

摘　　要：研究了高抗冲聚苯乙烯（HIPS）／聚丙烯（PP）共混物在过氧化二异丙苯（DCP）存在下的熔融反应过程及其动态力学性质．HIPS在DCP存在下以聚苯乙烯（PS）的降解为主，伴随着聚丁二烯（PB）的交联和接枝，PP在DCP存在下以降解为主，HIPS／PP在DCP存在下以PP同HIPS的反应接枝为主，这种原位生成的增容剂显著地改善了HIPS／PP两组份间的相容性，其分子运动特征较前两者发生明显变化，PS的Tg下降，PB和PP的Tg升高．The melt reactive blending and dynamic mechanical properties of HIPS/PP blendsin the presence of dicumyl peroxide(DCP) were studied. The results show that the degradation of PS was the main process in HIPS/DCP mixture while the cross-linking and graftingare the predominate in the PB phases. PP was degraded when it was 'dxed with DCP inmolten state. However, the grafting of PP onto HIPS was a main process in HIPS/PP/DCPblends. The characteristic of molecular motion in HIPS/PP/DCP blends is significantly different from that in HIPS/PP blends. The glass transition temperature of PS phase was decreased and that of PB and PP phases were increased. The melt reaction mixing of HIPS/PPblends led to the in-situ compatibilization.

关 键 词：高抗冲 聚苯乙烯 聚丙烯 反应增容 熔融 共混物 

分 类 号：O632.12[理学—高分子化学] O632.13[理学—化学]