微波辐射凝固天然橡胶硫化胶热降解动力学的研究  

Study on the Thermal Degradation Kinetics of Vulcanizated Natural Rubber Coagulated by Microwave Radiation

作　　者：李一民[1] 廖建和[1] 赵艳芳[1] 廖禄生[1] 黄桂春[2] 陈桂雄[2] 

机构地区：[1]海南大学材料与化工学院,儋州571737 [2]海南天然橡胶产业集团股份有限公司,海口570100

出　　处：《材料导报》2011年第22期51-55,73,共6页Materials Reports

基　　金：海南大学校基金(2009036);海南省自然科学基金(509007)

摘　　要：采用热分析法(TA)研究了微波辐射凝固天然橡胶(NR-m)和自然微生物凝固天然橡胶(NR-n)的硫化胶在氮气气氛中的热降解行为,为探索微波凝固天然胶乳这种新加工工艺提供了科学依据。采用Achar法和Coats-Redfern′s法求出NR-m和NR-n硫化胶热降解反应中的机理函数,确定热降解反应中可能遵循的动力学机理,并得到了各步反应中的平均表观活化能Ea以及频率因子A等动力学参数。Thermal degradation behavior of vulcanizates of microwave radiation coagulation natural rubber（NR- m） and natural coagulation natural rubber （NR-n） in Na-ambient were investigated by thermal analysis, to provide a scientific basis for a new process technology that is microwave radiation coagulation of natural latex. The mechanism functions of thermal decomposition of NR-m and NR-n vulcanizates were calculated by Achar method and Coats-Red- fernfs method to determine which kinetics mechanism the thermal degradation reaction may follow and to obtain kinetics parameters of each degradation step, such as the apparent activation energy Ea and the frequency factor A.

关 键 词：天然橡胶 微波辐射 硫化胶 热降解 机理函数 

分 类 号：TQ330.52[化学工程—橡胶工业]