2-硫代苯并噻唑/对苯二胺硫化中间体的表征及其对硫化的影响

IF 1.2 4区工程技术 Q4 POLYMER SCIENCE

Rubber Chemistry and Technology Pub Date : 2022-11-18 DOI:10.5254/rct.22.78973

S. Wen, Bin Wang, Aiqin Wu, Qing-zhi Zhang, Wenrong Zhao, Weijie Jia

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引用次数: 0

摘要

采用超高效液相色谱-串联四极杆飞行时间质谱法对2-硫代苯并噻唑/对苯二胺硫化中间体进行了表征。预生成的2-硫代苯并噻唑/对苯二胺中间体对硫交联反应有明显的加速作用。因此，硫化活性物质的产生可以证明对苯二胺抗氧化剂可以通过与促进剂的反应对硫化过程产生影响。根据对不同固化阶段样品的分析，推测中间体最有可能在硫化诱导期产生。该研究还为氧化锌对硫化的影响提供了间接证据。该中间体可以在溶液和硫化胶中检测到。它的形成可能是锌离子介导的可逆机制，涉及自由基过程。

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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CHARACTERIZATION OF 2-THIOBENZOTHIAZOLE/P-PHENYLENEDIAMINE VULCANIZATION INTERMEDIATE AND ITS INFLUENCE ON VULCANIZATION

A 2-thiobenzothiazole/p-phenylenediamine vulcanization intermediate has been characterized by means of ultra-high-performance liquid chromatography–tandem quadrupole time-of-flight mass spectrometry. Pregenerated 2-thiobenzothiazole/p-phenylenediamine intermediate has a clear effect on accelerating the sulfur crosslinking reaction. Therefore, the generation of vulcanization active species can act as a proof that p-phenylenediamine antioxidant could exert an influence on the vulcanization process via a reaction with the accelerator. Based on an analysis of samples from different curing stages, it is speculated that the intermediate is most likely generated in the vulcanization induction period. This research also provides indirect evidence of the effect of zinc oxide on vulcanization. The intermediate can be detected in both solution and vulcanizate. Its formation is likely to be a zinc ion–mediated reversible mechanism involving a radical course.

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来源期刊

Rubber Chemistry and Technology 工程技术-高分子科学

CiteScore

3.50

自引率

20.00%

发文量

审稿时长

3.6 months

期刊介绍： The scope of RC&T covers: -Chemistry and Properties- Mechanics- Materials Science- Nanocomposites- Biotechnology- Rubber Recycling- Green Technology- Characterization and Simulation. Published continuously since 1928, the journal provides the deepest archive of published research in the field. Rubber Chemistry & Technology is read by scientists and engineers in academia, industry and government.