氯丁橡胶热分解动力学研究

Study on the thermal degradation kinetics of chloroprene rubber

摘要: 对国产和进口氯丁橡胶(CR)热分解动力学进行研究,结果表明,CR的热降解过程分 3步进行,N2气氛下的明显起始分解温度为 260℃,推得热分解反应级数为一级,热分解反应活化能为 148kJ·mol-1,分解反应的频率因子为 2×10-11.

Abstract: Thermal degradation kinetics of chloroprene rubber(CR) in nitrogen has been studied using thermogravimitry. It was found that the thermal degradation process of CR is a three-step reaction in nitrogen. The thermal degradation starting temperature of CR is 260 ℃. The results show that the thermal degradation reaction of CR is first order with respect to CR mass. The values of activation energy(E) and the preexponential factor(A) are 148 kJ·mol~(-1) and 2×10~(-11),respectively.