Effects of crosslinked rubber particles on rheological behaviors of ethylene-propylene-diene rubber/ polypropylene thermoplastic vulcanizates

IF 4.1 2区 化学 Q2 POLYMER SCIENCE Polymer Pub Date : 2024-11-07 DOI:10.1016/j.polymer.2024.127794
Zhaopeng Hu, Xin Jiang, Yihu Song, Yongzhong Bao, Qiang Zheng
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Abstract

A novel secondary vulcanization-dilution process was employed to prepare ethylene-propylene-diene rubber/polypropylene (EPDM/PP) thermoplastic vulcanizates (TPVs) with uniform size, controllable crosslinking density, and content of rubber particles to assess their significant impact on rheological behavior using Fourier-rheology, shedding light on the interplay between microstructural features and macroscopic material properties. Through the application of the time-concentration superposition principle, a broad reinforcement spectrum is established, enhancing the understanding of TPV structure-property relationships. Also studied is the Mullins effect of the TPVs at two different temperatures, contributing to a deeper understanding of their deformation mechanisms. The results offer valuable insights for the formulation and processing of TPVs, emphasizing the importance of tailored particle characteristics for optimizing material performance.

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交联橡胶颗粒对乙烯-丙烯-二烯橡胶/聚丙烯热塑性硫化弹性体流变行为的影响
采用新型二次硫化稀释工艺制备了尺寸均匀、交联密度和橡胶颗粒含量可控的乙丙橡胶/聚丙烯(EPDM/PP)热塑性硫化弹性体(TPVs),并利用傅立叶流变学评估了它们对流变行为的重要影响,从而揭示了微观结构特征与宏观材料性能之间的相互作用。通过应用时间-浓度叠加原理,建立了广泛的补强谱,从而加深了对热塑性硫化弹性体结构-性能关系的理解。此外,还研究了热塑性硫化弹性体在两种不同温度下的穆林斯效应,有助于加深对其变形机制的理解。研究结果为热塑性硫化弹性体的配方和加工提供了宝贵的见解,强调了定制颗粒特性对于优化材料性能的重要性。
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来源期刊
Polymer
Polymer 化学-高分子科学
CiteScore
7.90
自引率
8.70%
发文量
959
审稿时长
32 days
期刊介绍: Polymer is an interdisciplinary journal dedicated to publishing innovative and significant advances in Polymer Physics, Chemistry and Technology. We welcome submissions on polymer hybrids, nanocomposites, characterisation and self-assembly. Polymer also publishes work on the technological application of polymers in energy and optoelectronics. The main scope is covered but not limited to the following core areas: Polymer Materials Nanocomposites and hybrid nanomaterials Polymer blends, films, fibres, networks and porous materials Physical Characterization Characterisation, modelling and simulation* of molecular and materials properties in bulk, solution, and thin films Polymer Engineering Advanced multiscale processing methods Polymer Synthesis, Modification and Self-assembly Including designer polymer architectures, mechanisms and kinetics, and supramolecular polymerization Technological Applications Polymers for energy generation and storage Polymer membranes for separation technology Polymers for opto- and microelectronics.
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