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Simulating Vulcanization Process During Tire Production to Explore Sulfur Migration During Pyrolysis by Bingyan Sun; Jiantao Li; Li Xiang; Fawei Lin; Lei Che; Wangyang Tian; Beibei Yan; Guanyi Chen is a Engineering article available to read on EtoBox.

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This paper systematically investigated sulfur transformation during pyrolysis of waste tires by simulating vulcanization process. Three formulas with rubbers, carbon black, ZnO, and typical vulcanization accelerators were prepared by vulcanization and compounded process as simulated tires. Stepwise temperature programmed pyrolysis was conducted in thermogravimetric analyzer and fixed bed reactor. Vulcanization promoted the weight loss rate for thermal degradation of vulcanized rubbers at 300-400 • C, but weakened it at 400-500 • C. The addition of vulcanization accelerators made these effects even more pronounced. Accordingly, more pyrolytic oil was obtained at 300-400 • C for vulcanized rubbers which should contribute to the partial destruction of polymer chains by vulcanization. Besides, vulcanized rubbers attained higher proportion of aromatics but less cyclenes than compounded rubbers. Vulcanized rubbers with ethyl ziram accelerator inhibited H 2 S release, while vulcanized rubbers with N-tert-Butyl-2-benzothiazolesulfenamide inhibited the formation of CH 3 SH. The detailed sulfur compounds in gas, oil, and solid char were analyzed. Vulcanization seemed to exhibit positive effe

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Author

Bingyan Sun; Jiantao Li; Li Xiang; Fawei Lin; Lei Che; Wangyang Tian; Beibei Yan; Guanyi Chen

Publisher

Elsevier BV

Published

2022

Language

EN

Field

Engineering (Physical Sciences)