高等学校化学学报 ›› 1992, Vol. 13 ›› Issue (2): 274.

• 论文 • 上一篇    下一篇

高密度聚乙烯与EPDM磺酸锌盐共混物结构与性能的研究

曾祥生, 李惠林, 徐僖   

  1. 成都科技大学高分子研究所, 成都, 610065
  • 收稿日期:1991-05-03 出版日期:1992-02-24 发布日期:1992-02-24
  • 通讯作者: 曾祥生
  • 基金资助:

    国家自然科学基金

A Study of Morphology and Properties of HDPE/Zinc-Neutralized Sulfonated EPDM Blends

ZENG Xiang-sheng, LI Hui-lin, XU Xi   

  1. Polymer Research Institute, Chengdu University of Science and Technology, Chengdu, 610065
  • Received:1991-05-03 Online:1992-02-24 Published:1992-02-24

摘要: 本文研究了高密度聚乙烯(HDPE)/EPDM磺酸锌盐(Zn-SEPDM)共混物的机械性能、流变行为、形态和相容性。结果表明:加入Zn-SEPDM可使HDPE的熔点和结晶度降低,熔程变窄。当Zn-SEPDM含量超过20%,共混物中Zn-SEPDM呈连续相,冲击强度突增。

关键词: 高密度聚乙烯, EPDM磷酸锌盐, 物理交联

Abstract: The compatibility of zinc-neutralized sulfonated EPDM(Zn-SEPDM) and its effect on crystallizing behavior of high density polyethylene (HOPE) as well as the morphology of the blend were studied via WAXD, DSC, TEM, SEM, a capillary rheometer and mechanical property testsThe results show that the addition of Zn-SEPDM makes both the melting point and the crystallizing temperature of HOPE decreaseAs Zn-SEPDM content exceeded 20%, Zn-SEPDM in the blend became a continuous phase and an abrupt change in impact strength occurred therefromOwing to the incorporation of ionic groups into EPDM, the strong interactions between the chains make the impact strength of HDPE incredibly increased without sacrificing its tensile strength so much.

Key words: High density polyethylene, Zinc-neutralized sulfonate EPDM, Physical cross-linking

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