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首页> 外文期刊>European Polymer Journal >Morphology development of POE/PP thermoplastic vulcanizates (TPVs) during dynamic vulcanization
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Morphology development of POE/PP thermoplastic vulcanizates (TPVs) during dynamic vulcanization

机译：动态硫化过程中PoE / PP热塑性硫化酸盐（TPV）的形态学发展

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摘要

Polyolefin elastomer (POE)/polypropylene (PP) thermoplastic vulcanizates (TPVs) is considered to be a better alternative to commercial ethylene-propylene-diene monomer (EPDM)/PP TPVs owing to its better overall performance and low-cost. In this study, we deeply studied the morphology development of POE/PP blends during dynamic vulcanization (DV) and its influencing factors such as the degree of crosslinking, crosslinking rate and shear rate. The results show that POE/PP TPVs exhibits smaller rubber nanoparticles (RNPs) and their agglomerates than that of EPDM/PP TPVs because of the better compatibility between POE and PP. The morphology development during DV of POE/PP TPVs is dominated by the formation and agglomeration of POE RNPs caused by the combined effect of dynamical in-situ crosslinking and the shear-induced break-up of POE phase. Higher degree of crosslinking, higher shear rate and moderate cross linking rate of POE phase facilitate the rapid formation of smaller RNPs and RNPs agglomerates, and accelerate the occurrence of faster phase inversion. This study provides guidance for the preparation of high performance POE/PP TPVs by controlling the microstructure.
机译：聚烯烃弹性体（POE）/聚丙烯（PP）热塑性硫化酸盐（TPV）被认为是由于其更好的整体性能和低成本而成为商业乙烯 - 丙烯 - 二烯单体（EPDM）/ PP TPV的替代方案。在这项研究中，我们深入研究了动态硫化（DV）期间PoE / PP混合物的形态学发展及其影响因素，如交联，交联率和剪切速率。结果表明，由于POE和PP之间的相容性更好，POE / PP TPVs表现出较小的橡胶纳米颗粒（RNP）及其附聚物，而不是EPDM / PP TPV。 PoE / PP TPV在DV期间的形态学发展是由动态原位交联的综合效应和剪切诱导的POE阶段分解引起的PoE RNP的形成和凝聚。高级交联程度，较高的剪切速率和PoE相的中等交联速率促进了较小的RNP和RNPS附聚的快速形成，并加速了更快的相倒置的发生。本研究提供了通过控制微观结构来制备高性能PoE / PP TPV的指导。

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  • 来源
    《European Polymer Journal》 |2017年第2017期|共12页
  • 作者

    Li Shangqing; Lv Yafei; Sheng Jian; Tian Hongchi; Ning Nanying; Zhang Liqun; Wu Hanguang; Tian Ming;

  • 作者单位

    Beijing Univ Chem Technol Beijing Adv Innovat Ctr Soft Matter Sci &

    Engn Beijing 100029 Peoples R China;

    Beijing Univ Chem Technol Key Lab Beijing City Preparat &

    Proc Novel Polyme Beijing 100029 Peoples R China;

    Beijing Univ Chem Technol Key Lab Beijing City Preparat &

    Proc Novel Polyme Beijing 100029 Peoples R China;

    Beijing Univ Chem Technol Key Lab Beijing City Preparat &

    Proc Novel Polyme Beijing 100029 Peoples R China;

    Beijing Univ Chem Technol Key Lab Beijing City Preparat &

    Proc Novel Polyme Beijing 100029 Peoples R China;

    Beijing Univ Chem Technol Beijing Adv Innovat Ctr Soft Matter Sci &

    Engn Beijing 100029 Peoples R China;

    Beijing Univ Chem Technol Key Lab Beijing City Preparat &

    Proc Novel Polyme Beijing 100029 Peoples R China;

    Beijing Univ Chem Technol Beijing Adv Innovat Ctr Soft Matter Sci &

    Engn Beijing 100029 Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 有机化学;
  • 关键词

    Dynamic vulcanization; POE/PP blends; Morphology evolution; Rubber nanoparticles; Agglomerates;

    机译：动态硫化;PoE / pp混合物;形态进化;橡胶纳米粒子;附聚物;

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