Synergistic effect of a new binary accelerator system on curing characteristics and properties of styrene–butadiene rubber vulcanizates

IF 2.4 3区 化学 Q3 POLYMER SCIENCE Iranian Polymer Journal Pub Date : 2024-07-02 DOI:10.1007/s13726-024-01344-3
Fahima M. Helaly, Adel A. Koriem, Samaa R. Salem, Sanaa M. El-Sawy, Fikry A. Abdel-Mohdy, Aman I. Khalaf
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Abstract

Enhancing the vulcanization rate of elastomers is a common objective for optimizing their performance. Styrene–butadiene rubber (SBR) was vulcanized employing several conventional systems designed with various amounts of sulfur and activators/accelerators. Herein, it was an attempt to synthesize a copolymer from glycidyl methacrylate (GMA) and diethylaminoethyl methacrylate (DEAEMA)-(GMA-co-DEAEMA) and study its effect as a secondary accelerator on the curing characteristics and vulcanizate properties of SBR. The copolymer GMA-co-DEAEMA (III) was grafted with three different functional groups (R) including thioglycolic acid, 2-aminothiophenol, and 2-amino-5-mercaptothiazole, to yield III/S/1, IIII/S/2, and III/S/3 copolymers, respectively. The three-modified copolymers with an added conventional accelerator N-cyclohexyl-2-benzothiazole sulfenamide (CBS) were used to accelerate the efficiency of the vulcanizing agent (sulfur). Additional characterization of the synthesized copolymer and the obtained cured elastomer were carried out through different techniques, including mass and Fourier-transform infrared spectroscopy and thermogravimetric analysis (TGA), in addition to the rheological and mechanical studies. The results revealed that all the subject copolymers, when applied as a secondary accelerator for the SBR vulcanization reaction, enhanced the rate and the state of the cross-linking process. The findings of this study eruditely recommended that large rubber articles, like tires, could be cured more efficiently and cost-effectively when employing the presented copolymer as a secondary accelerator.

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新型二元促进剂体系对丁苯橡胶硫化胶硫化特性和性能的协同效应
提高弹性体的硫化速度是优化其性能的一个共同目标。丁苯橡胶(SBR)的硫化采用了几种传统体系,这些体系设计了不同数量的硫和活化剂/促进剂。本文尝试合成一种甲基丙烯酸缩水甘油酯(GMA)和甲基丙烯酸二乙氨基乙酯(DEAEMA)的共聚物(GMA-co-DEAEMA),并研究其作为辅助促进剂对丁苯橡胶硫化特性和硫化性能的影响。共聚物 GMA-co-DEAEMA (III) 接枝了三种不同的官能团 (R),包括硫代乙醇酸、2-氨基苯硫酚和 2-氨基-5-巯基噻唑,分别得到 III/S/1、III/S/2 和 III/S/3 共聚物。添加了传统促进剂 N-环己基-2-苯并噻唑亚磺酰胺(CBS)的三种改性共聚物可用于提高硫化剂(硫)的效率。除了流变学和力学研究外,还通过不同的技术对合成的共聚物和获得的固化弹性体进行了表征,包括质谱和傅立叶变换红外光谱以及热重分析(TGA)。研究结果表明,所有受试共聚物在用作 SBR 硫化反应的二级促进剂时,都能提高交联过程的速率和状态。这项研究的结果建议,在使用所介绍的共聚物作为辅助促进剂时,可以更高效、更经济地硫化大型橡胶制品(如轮胎)。
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来源期刊
Iranian Polymer Journal
Iranian Polymer Journal 化学-高分子科学
CiteScore
4.90
自引率
9.70%
发文量
107
审稿时长
2.8 months
期刊介绍: Iranian Polymer Journal, a monthly peer-reviewed international journal, provides a continuous forum for the dissemination of the original research and latest advances made in science and technology of polymers, covering diverse areas of polymer synthesis, characterization, polymer physics, rubber, plastics and composites, processing and engineering, biopolymers, drug delivery systems and natural polymers to meet specific applications. Also contributions from nano-related fields are regarded especially important for its versatility in modern scientific development.
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