Grafting Polybutadiene onto Surfaces of Talcum Powder by Spray-Drying Technology and Modification of EPDM Rubber

IF 1 4区化学 Q4 POLYMER SCIENCE

Polymer Science, Series B Pub Date : 2024-03-23 DOI:10.1134/S1560090424600116

Yuxing Wang, Qilai Wang, Suyuan Zhao, Houluo Cong, Yijun Chen, Xianrong Shen, Yixin Xiang

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Abstract

In this contribution, we reported the investigation of EPDM rubber reinforced by talcum grafted polybutadiene (MSi-Talc). First, poly (3-methacryloxypropyltrimethoxysilane)-b-polybutadiene-b-poly(3-methacryloxypropyltrimethoxysilane) (PMSi-b-PB-b-PMSi) triblock copolymer was synthesized by esterification reaction and RAFT polymerization of 3-methacryloxypropyltrimethoxysilane. Second, talcum powder (Talc) was spraying with PMSi-b-PB-b-PMSi solution and drying to obtain modified talc (MSi-Talc). MSi-Talc and Talc were incorporated into EPDM simultaneously. It was found that Talc in the EPDM/MSi-Talc vulcanizates was much better distributed and dispersed than in the EPDM/Talc composites. Compared to Talc dispersion and Talc-rubber interaction of the EPDM/Talc composites, the mechanical properties (tensile strength, elongation at break, and tear strength) of the EPDM/MSi-Talc composites were significantly improved, and the compression set of the EPDM/MSi-Talc composites was greatly decreased and much lower than that of the EPDM/Talc composites.

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利用喷雾干燥技术将聚丁二烯接枝到滑石粉表面并对三元乙丙橡胶进行改性

摘要在这篇论文中，我们报告了滑石粉接枝聚丁二烯（MSi-Talc）增强三元乙丙橡胶的研究。首先，通过 3-甲基丙烯酰氧基丙基三甲氧基硅烷的酯化反应和 RAFT 聚合反应合成了聚（3-甲基丙烯酰氧基丙基三甲氧基硅烷）-b-聚丁二烯-b-聚（3-甲基丙烯酰氧基丙基三甲氧基硅烷）（PMSi-b-PB-b-PMSi）三嵌段共聚物。其次，用 PMSi-b-PB-b-PMSi 溶液喷涂滑石粉（Talc）并干燥，得到改性滑石粉（MSi-Talc）。将 MSi-Talc 和滑石粉同时加入 EPDM 中。研究发现，与三元乙丙橡胶/滑石粉复合材料相比，滑石粉在三元乙丙橡胶/MSi-Talc 硫化物中的分布和分散情况要好得多。与 EPDM/Talc 复合材料中 Talc 的分散和 Talc 与橡胶的相互作用相比，EPDM/MSi-Talc 复合材料的机械性能（拉伸强度、断裂伸长率和撕裂强度）显著提高，而且 EPDM/MSi-Talc 复合材料的压缩永久变形大大降低，远低于 EPDM/Talc 复合材料。

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来源期刊

Polymer Science, Series B 化学-高分子科学

CiteScore

1.80

自引率

8.30%

发文量

审稿时长

>0 weeks

期刊介绍： Polymer Science, Series B is a journal published in collaboration with the Russian Academy of Sciences. Series B experimental and theoretical papers and reviews dealing with the synthesis, kinetics, catalysis, and chemical transformations of macromolecules, supramolecular structures, and polymer matrix-based composites (6 issues a year). All journal series present original papers and reviews covering all fundamental aspects of macromolecular science. Contributions should be of marked novelty and interest for a broad readership. Articles may be written in English or Russian regardless of country and nationality of authors. All manuscripts are peer reviewed