Research on the pyrolysis process of crumb tire rubber in waste cooking oil
Research on the pyrolysis process of crumb tire rubber in waste cooking oil
复制标题
废食用油中废轮胎胶热解工艺研究
DOI：
10.1016/j.renene.2018.02.133
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发表时间：
2018-09-01
期刊：
影响因子：
8.7
通讯作者：
Zhao, Mengzhen
中科院分区：
文献类型：
--
作者：
Dong, Ruikun;Zhao, Mengzhen
将废食用油用于废轮胎橡胶的热裂解，不仅提高了制备过程的安全性和可控性，而且有效地回收了这两种废弃资源。本研究以WCO为溶剂，对CTR进行高温裂解制备废橡胶油（WRO）。通过热重分析、傅里叶变换红外光谱、凝胶渗透色谱和动态剪切流变仪研究了CTR在热能积累过程中分子结构和流变性能的变化。通过离析试验研究了CTR与沥青裂解前后的相容性。结果表明，随着温度的升高，CTR中解聚和断裂的橡胶大分子继续裂解成分子量较小的分子，同时释放出更多的天然橡胶和炭黑。WRO的流变性能发生了很大变化，零剪切粘度降低，流动性改善，塑性增强。CTR在热解过程中发生了复杂的化学反应，但除了释放出的天然橡胶外，没有产生新的官能团。离析试验表明，采用WCO热解可以改善CTR与原沥青的相容性。(C)2018爱思唯尔有限公司版权所有。
The use of waste cooking oil (WCO) in crumb tire rubber (CTR) pyrolysis not only improves the safety and controllability of the preparation process, but also recycles these two waste resources effectively. In this study, WCO was used as the solvent to pyrolyse CTR at high temperature to prepare waste rubber oil (WRO). The changes of CTR in molecular structure and rheological properties during thermal energy accumulation were explored through thermogravimetric analysis, Fourier transform infrared spectrometer, gel permeation chromatography and dynamic shear rheometer. The compatibility of CTR with virgin asphalt before and after pyrolysis was described by segregation test. Results show that, with the rise of temperature, depolymerized and broken rubber macromolecule in CTR continue to crack into molecules with less molecular weight, while more of natural rubber and carbon black are released. The rheological properties of WRO have changed greatly, i.e. the decreased zero shear viscosity, the improved flowability and the better plasticity. Complex chemical reactions occur during the pyrolysis of CTR, but no new functional group is generated except for the released natural rubber. The segregation test shows that, the compatibility of CTR with virgin asphalt can be improved by adopting WCO for pyrolysis. (C) 2018 Elsevier Ltd. All rights reserved.