Study of Styrene Butadiene Rubber Reinforced by Polybutadiene Liquid Rubber-Modified Silica.

IF 4.7 3区工程技术 Q1 POLYMER SCIENCE

Polymers Pub Date : 2024-10-10 DOI:10.3390/polym16202866

Qing Liao, Xiao Tang, Jiao Tang, Jiaxiang Tang, Housheng Xia, Zhongyi Sheng, Jianping Zhou, Junfeng Niu

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引用次数: 0

Abstract

The dispersion of silica in rubber systems and its interaction with rubber are two key factors in the preparation of rubber composites with excellent properties. In view of this, silica modified with terminal isocyanate-based polybutadiene liquid rubber (ITPB) is used to improve the dispersion effect of silica in rubber and enhance its interaction with the rubber matrix to improve the rubber's performance. The impact of different modification conditions on the dispersion of silica and the properties of modified silica-filled rubber composites were studied by changing the amount of ITPB and the modification method of silica, including blending and chemical grafting. The experimental results show that ITPB is successfully grafted onto silica, and the use of modified silica improves the cross-linking density of rubber, promotes the rate of rubber vulcanization, and overcomes the shortcomings of the delayed vulcanization of silica itself. When the ratio of ITPB liquid rubber to silica equals 1:20, the comprehensive performance of rubber is the best, the ITPB-modified silica has a better dispersion effect in rubber, and the rolling resistance is slightly improved, with tensile strength reaching 12.6 MPa. The material demonstrates excellent overall performance and holds promise for applications in the rail, automotive, and electrical fields.

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聚丁二烯液体橡胶改性白炭黑增强苯乙烯-丁二烯橡胶的研究

白炭黑在橡胶体系中的分散及其与橡胶的相互作用是制备具有优异性能的橡胶复合材料的两个关键因素。有鉴于此，使用端异氰酸酯基聚丁二烯液体橡胶（ITPB）改性白炭黑可改善白炭黑在橡胶中的分散效果，并增强其与橡胶基体的相互作用，从而改善橡胶的性能。通过改变 ITPB 的用量和白炭黑的改性方法（包括共混和化学接枝），研究了不同改性条件对白炭黑分散性和改性白炭黑填充橡胶复合材料性能的影响。实验结果表明，ITPB 成功接枝到白炭黑上，改性白炭黑的使用提高了橡胶的交联密度，促进了橡胶的硫化速度，克服了白炭黑本身延迟硫化的缺点。当 ITPB 液体橡胶与白炭黑的比例为 1:20 时，橡胶的综合性能最好，ITPB 改性白炭黑在橡胶中的分散效果更好，滚动阻力略有改善，拉伸强度达到 12.6 兆帕。该材料具有优异的综合性能，有望应用于铁路、汽车和电气领域。

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

Polymers POLYMER SCIENCE-

CiteScore

8.00

自引率

16.00%

发文量

4697

审稿时长

1.3 months

期刊介绍： Polymers (ISSN 2073-4360) is an international, open access journal of polymer science. It publishes research papers, short communications and review papers. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. Therefore, there is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced. Polymers provides an interdisciplinary forum for publishing papers which advance the fields of (i) polymerization methods, (ii) theory, simulation, and modeling, (iii) understanding of new physical phenomena, (iv) advances in characterization techniques, and (v) harnessing of self-assembly and biological strategies for producing complex multifunctional structures.