过氧化物动态硫化三元乙丙橡胶/聚丙烯的动力学行为  

Kinetics behavior on peroxide dynamic vulcanization of EPDM/PP

作　　者：王超[1] WANG Chao(Yanshan Branch of Beijing Research Institute of Chemical Industry,National Engineering Research Center for Synthesis of Novel Rubber and Plastic Materials,Beijing 102500,China)

机构地区：[1]中国石油化工股份有限公司北京化工研究院燕山分院橡塑新型材料合成国家工程研究中心,北京102500

出　　处：《弹性体》2022年第1期16-21,共6页China Elastomerics

摘　　要：通过无转子硫化仪研究了三元乙丙橡胶(EPDM)/聚丙烯(PP)动态硫化特性及动力学,并考察了硫化体系及硫化温度对EPDM/PP动态硫化特性及动力学参数的影响。结果表明,过氧化物动态硫化EPDM/PP过程主要由主硫化阶段及后硫化阶段2个一级动力学反应组成;通过对两段硫化反应速率常数的拟合发现硫化剂BIBP、助硫化剂HVPBd及HVA2最佳用量分别为0.7%、2%及0.5%,并拟合出EPDM/PP动态硫化两段一级反应的活化能E_(a),分别为119.67 kJ/mol及132.54 kJ/mol。获得的数据可为动态硫化制备EPDM/PP TPV工艺条件的选择提供理论支持。Dynamic vulcanization characteristics and dynamics of EPDM/PP were studied by no-rotor vulcanizer,and the influence of curing system and curing temperature on dynamic curing characteristics and kinetic parameters of EPDM/PP was investigated.The results show that the process of dynamic vulcanization EPDM/PP by peroxides mainly consists of two first-order kinetic reactions:main vulcanization stage and post vulcanization stage.It was found that the optimum dosage of BIBP,HVPBd and HVA2 were determined to be 0.7%,2%and 0.5%,respectively by fitting the rate constants of two stages of vulcanization reaction.The activation energy of EPDM/PP two stage first order reaction of dynamic vulcanization were 119.67 kJ/mol and 132.54 kJ/mol,respectively.The results provided theoretical support for the selection of process conditions for dynamic curing EPDM/PP TPV.

关 键 词：动态硫化热塑性弹性体 硫化特性 动力学参数 活化能 

分 类 号：TQ334[化学工程—橡胶工业]