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脱硫与再硫化对硫交联类型/等级的影响：废轮胎胶粉的回收利用

The Influence of Devulcanization and Revulcanization on Sulfur Cross-Link Type/Rank: Recycling of Ground Tire Rubber.

作者信息

Innes James Robert, Siddique Nehnah, Thompson Glen, Wang Xiaolei, Coates Phil, Whiteside Ben, Benkreira Hadj, Caton-Rose Fin, Lu Canhui, Wang Qi, Kelly Adrian

机构信息

Polymer IRC, University of Bradford, Richmond Road, Bradford BD71DP, U.K.

State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, China.

出版信息

ACS Omega. 2024 Sep 25;9(40):41797-41806. doi: 10.1021/acsomega.4c06159. eCollection 2024 Oct 8.

DOI:10.1021/acsomega.4c06159
PMID:39398171
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11465549/
Abstract

Devulcanized rubber could be a valuable material feedstock to help in the manufacture of sustainable rubber products. However, the differences in the chemistry and structure of devulcanized rubber have limited industrial uptake. This work demonstrates how devulcanization affects the concentration and ratios of mono-, di-, and polysulfidic cross-links. These residual cross-links make devulcanized rubber chemically dissimilar from virgin rubber, affecting (re)vulcanization. The hypothesis that the sulfur rank of revulcanized material can be modified by the sulfur/accelerator ratio was evaluated by two different cure packages. Despite substantial differences in the accelerator/sulfur ratio, both recycled rubber compounds favored the formation of polysulfidic cross-links.

摘要

脱硫橡胶可能是一种有价值的原料，有助于制造可持续的橡胶产品。然而，脱硫橡胶在化学性质和结构上的差异限制了其在工业上的应用。这项工作展示了脱硫过程如何影响单硫、二硫和多硫交联键的浓度和比例。这些残留的交联键使脱硫橡胶在化学性质上与原生橡胶不同，从而影响（再）硫化。通过两种不同的硫化体系评估了硫化材料的硫类型可通过硫/促进剂比例进行改变的假设。尽管促进剂/硫比例存在显著差异，但两种再生橡胶配方都有利于多硫交联键的形成。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1f4a/11465549/7ecbde36c1d1/ao4c06159_0007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1f4a/11465549/6c5419c0e919/ao4c06159_0001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1f4a/11465549/5d92b7d9951c/ao4c06159_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1f4a/11465549/8324e89beb42/ao4c06159_0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1f4a/11465549/14719791b0f2/ao4c06159_0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1f4a/11465549/6ece0441d0d0/ao4c06159_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1f4a/11465549/2e8e68829e7b/ao4c06159_0006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1f4a/11465549/7ecbde36c1d1/ao4c06159_0007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1f4a/11465549/6c5419c0e919/ao4c06159_0001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1f4a/11465549/5d92b7d9951c/ao4c06159_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1f4a/11465549/8324e89beb42/ao4c06159_0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1f4a/11465549/14719791b0f2/ao4c06159_0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1f4a/11465549/6ece0441d0d0/ao4c06159_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1f4a/11465549/2e8e68829e7b/ao4c06159_0006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1f4a/11465549/7ecbde36c1d1/ao4c06159_0007.jpg

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本文引用的文献

1
Devulcanization Technologies for Recycling of Tire-Derived Rubber: A Review.用于回收轮胎衍生橡胶的脱硫技术综述
Materials (Basel). 2020 Mar 10;13(5):1246. doi: 10.3390/ma13051246.
2
Upscaling of a Batch De-Vulcanization Process for Ground Car Tire Rubber to a Continuous Process in a Twin Screw Extruder.将用于废旧汽车轮胎橡胶的间歇式脱硫工艺放大至双螺杆挤出机中的连续工艺。
Materials (Basel). 2016 Aug 24;9(9):724. doi: 10.3390/ma9090724.
3
Progress in used tyres management in the European Union: a review.欧盟废旧轮胎管理进展：综述。
Waste Manag. 2012 Oct;32(10):1742-51. doi: 10.1016/j.wasman.2012.05.010. Epub 2012 Jun 9.