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首页> 外文期刊>Journal of Applied Polymer Science >Dependence of microstructure and properties of polypropylene/bromo-isobutylene-isoprene rubber thermoplastic vulcanizates on the molding process
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Dependence of microstructure and properties of polypropylene/bromo-isobutylene-isoprene rubber thermoplastic vulcanizates on the molding process

机译：聚丙烯/溴 - 异丁烯 - 异戊二烯橡胶热塑性硫化胶质橡胶热塑性硫化物对模塑过程的依赖性

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摘要

To explore the dependence of the microstructure and properties of thermoplastic vulcanizates (TPVs) on the molding process. The polypropylene/bromo-isobutylene-isoprene rubber thermoplastic vulcanizates (PP/BIIR-TPVs) are molded by high rate shear injection and compression molding, and the phase morphology and physical-mechanical properties of PP/BIIR-TPVs specimens are investigated. Detailed small-angle X-ray scattering, scanning electron microscopy and atomic force microscopy investigations demonstrate that the high rate shear of injection molding not only decreases the size of BIIR particles but also induces the orientation of the PP matrix and further increases its crystallinity. Subsequently, the PP/BIIR-TPVs molded by injection molding have higher tensile strength and Young's modulus, while the compression molding benefits to higher elongation at break. The mechanism regarding the effects of high rate shear during injection molding on phase morphology development of PP/BIIR-TPVs is discussed. This study guides the preparation of TPVs products with desired properties.
机译：探讨热塑性硫化胶（TPV）的微观结构和性能对成型工艺的依赖性。采用高速剪切注射和压缩成型技术制备了聚丙烯/溴代异丁烯-异戊二烯橡胶热塑性硫化胶（PP/BIIR TPV），并对PP/BIIR TPV试样的相形态和物理力学性能进行了研究。详细的小角X射线散射、扫描电子显微镜和原子力显微镜研究表明，注射成型的高速剪切不仅减小了BIIR颗粒的尺寸，还诱导了PP基体的取向，并进一步提高了其结晶度。随后，注塑成型的PP/BIIR TPV具有更高的拉伸强度和杨氏模量，而压缩成型有利于更高的断裂伸长率。讨论了注射成型过程中高速剪切对PP/BIIR TPV相形态发展的影响机理。本研究为制备具有预期性能的TPV产品提供了指导。

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  • 来源
    《Journal of Applied Polymer Science》 |2021年第2期|共10页
  • 作者

    Pan Xiaolong; Wang Zhaozhao; Chen Long; Li Wenhao; Hu Jian; Hu Jie; Wu Xiao; Zhang Jianming; Duan Yongxin;

  • 作者单位

    Qingdao Univ Sci &

    Technol Minist Educ Shandong Prov Key Lab Rubber Plast Key Lab Rubber Plast Qingdao 266042 Shandong Peoples R China;

    Qingdao Univ Sci &

    Technol Minist Educ Shandong Prov Key Lab Rubber Plast Key Lab Rubber Plast Qingdao 266042 Shandong Peoples R China;

    Qingdao Univ Sci &

    Technol Minist Educ Shandong Prov Key Lab Rubber Plast Key Lab Rubber Plast Qingdao 266042 Shandong Peoples R China;

    Qingdao Univ Sci &

    Technol Minist Educ Shandong Prov Key Lab Rubber Plast Key Lab Rubber Plast Qingdao 266042 Shandong Peoples R China;

    Qingdao Univ Sci &

    Technol Minist Educ Shandong Prov Key Lab Rubber Plast Key Lab Rubber Plast Qingdao 266042 Shandong Peoples R China;

    Qingdao Univ Sci &

    Technol Minist Educ Shandong Prov Key Lab Rubber Plast Key Lab Rubber Plast Qingdao 266042 Shandong Peoples R China;

    Qingdao Univ Sci &

    Technol Minist Educ Shandong Prov Key Lab Rubber Plast Key Lab Rubber Plast Qingdao 266042 Shandong Peoples R China;

    Qingdao Univ Sci &

    Technol Minist Educ Shandong Prov Key Lab Rubber Plast Key Lab Rubber Plast Qingdao 266042 Shandong Peoples R China;

    Qingdao Univ Sci &

    Technol Minist Educ Shandong Prov Key Lab Rubber Plast Key Lab Rubber Plast Qingdao 266042 Shandong Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 高分子化合物工业（高聚物工业）;
  • 关键词

    mechanical properties; molding; morphology; surfaces and interfaces;

    机译：机械性能;成型;形态;表面和界面;

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