TPV concentrate: Fabrication and performance

IF 4.1 2区化学 Q2 POLYMER SCIENCE

Polymer Pub Date : 2024-11-26 DOI:10.1016/j.polymer.2024.127882

Yongjian Zhao , Haonan Shi , Martin Hoch , Jie Mao , Xinyan Shi

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Abstract

Thermoplastic vulcanizates (TPVs) have been widely studied and applied in recent years because of their excellent elasticity and re-processibility similar to those of thermoplastics. However, its dynamical vulcanization processing normally requires an expensive twin-screw extruder with a very high L/D ratio. In this paper, a kind of thermoplastic vulcanizate concentrate (TPVC) with very high rubber phase content and low hardness was prepared by using highly oil-extended ultra-high molecular weight ethylene propylene diene rubber (EPDM) dynamically cured by peroxide and a low melt index polypropylene (PP) and extra oil softener. Then a new kind of high purity TPV with a wide hardness range was fabricated by using this TPVC simply melt blended with various contents of PP. The mechanical and recycling properties, rheological responses, phase morphology, crystallization, thermal stability and UV radiation resistance were systematically studied. In addition, because TPVC is filled with a large amount of white oil, the process parameters can be controlled reasonably by studying the distribution coefficient of white oil in the two phases.

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热塑性硫化弹性体浓缩物：制造和性能

热塑性硫化弹性体（TPVs）具有与热塑性塑料相似的优异弹性和可再加工性，近年来已被广泛研究和应用。然而，其动态硫化加工通常需要昂贵的高长径比双螺杆挤出机。本文利用过氧化物动态硫化的高油分超高分子量乙丙橡胶（EPDM）和低熔融指数聚丙烯（PP）以及额外的油软化剂，制备了一种橡胶相含量极高、硬度极低的热塑性硫化弹性体（TPVC）浓缩物。然后，利用这种热塑性聚氯乙烯与不同含量的聚丙烯进行简单的熔融共混，制造出了一种新型的高纯度热塑性硫化弹性体，其硬度范围很宽。研究人员对其机械和回收性能、流变反应、相形态、结晶、热稳定性和抗紫外线辐射性能进行了系统研究。此外，由于 TPVC 中填充了大量白油，因此可以通过研究白油在两相中的分布系数来合理控制工艺参数。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

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.