摘要
本文从对于在聚乙烯的气、固相氯化反应过程中,反应的控制步骤是氯气进入氯化聚乙烯粒子的内扩散的论证出发,导出了一种简化的数学模型,该模型描述了氯化过程中氯化聚乙烯的溶剩值随反应时间的变化;通过实验证明,在100℃到130℃温度区间内,该模型可以很好地与实测数据相吻合;最后,根据阿累尼乌斯公式,研究了温度对反应速率的影响,并求得了反应的活化能和指前因子。
The model for the diffusion of chlorine gas into a chlorinated polyethylene particle has been proposed by investigating the solvent properties of the particle. A simplified methe-matical model has been established to describe the interior diffusion process.The experimental data, based on the weight ratio of unreacted nucleus of polyethylene to the whole CPE particle varied with the reaction time, has shown good agreement with the model. The effect of chlorination temperature on the reaction has also been investigated according to the Arrihenius equation in the present study.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
1989年第1期85-89,共5页
Polymer Materials Science & Engineering
