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首页> 外文期刊>Journal of Hazardous Materials >Depolymerization of tire and natural rubber using supercritical fluids
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Depolymerization of tire and natural rubber using supercritical fluids

机译:使用超临界流体对轮胎和天然橡胶进行解聚

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摘要

The recycling post-consumer polymers into useful feedstocks is important for both environmental and economic reasons; however, the processing of highly crosslinked polymers such as tire rubber constitutes a significant technical challenge. In this work, supercritical H_2O and CO_2 were used to controllably depolymerize tire and natural rubber. Molecular weight analysis of the degraded material indicates that reaction time can be used to control the degree of breakdown; materials in the molecular weight range of 10~3-10~4 were obtained. Also, both material composition and supercritical fluid affect the rate at which material is depolymerized. Functional analysis of the processed material shows carbonyl and aromatic groups.
机译:出于环境和经济原因,将消费后的聚合物循环利用为有用的原料非常重要;然而,高度交联的聚合物如轮胎橡胶的加工构成了重大的技术挑战。在这项工作中,使用超临界H_2O和CO_2可控地解聚轮胎和天然橡胶。降解材料的分子量分析表明,反应时间可用于控制分解程度。获得分子量范围为10〜3-10〜4的材料。同样,材料组成和超临界流体都影响材料解聚的速率。所加工材料的功能分析显示羰基和芳族基团。

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