热重法对废旧计算机外壳塑料ABS的热解研究表明,热解过程可分为四个阶段:293~453K为第一热稳定阶段;453~630K为第一热失重阶段;630~800K为第二热失重阶段;800~1073K为第二热稳定阶段.升温速率对热解有较显著的影响,随着升温速率的增加,Ti、Tf和Tm随之提高,但各阶段的最终失重率并无大的改变.热解动力学研究表明,废旧塑料ABS在第二个失重阶段的热解反应级数约为1.5,热解活化能受升温速率和转化率的影响,活化能值在155.48~167.87 KJ·mol-1之间,这个失重段内的活化能平均值为161.22 KJ·mol-1.频率因子(以lnA值计)在11.09~12.12之间.
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