中华医学超声杂志

应用化学 ›› 1998, Vol. 0 ›› Issue (4): 54-58.

• 研究论文 • 上一篇    下一篇

HIPS/PP熔融反应共混及其动态力学性质

刘万军, 杨军, 刘景江   

  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
  • 收稿日期:1997-10-10 修回日期:1997-12-30 出版日期:1998-08-10 发布日期:1998-08-10
  • 基金资助:
    国家八五攻关项目

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

Liu Wanjun, Yand Jun, Liu Jingjiang   

  1. Polymer Physics Laboratory, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022
  • Received:1997-10-10 Revised:1997-12-30 Published:1998-08-10 Online:1998-08-10

PDF

481

被引次数

7 | 1

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.

关键词: 高抗冲聚苯乙烯, 聚丙烯, 反应增容, 动态力学性能

Abstract: 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.

Key words: high impact polystyrene, polypropylene, reactive compatibilization, dynamic mechanical property

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