甜菜碱对异戊橡胶热降解性能的影响  

The Influence of Betaine on Thermal Degradation Properties of Polyisoprene Rubber

作　　者：游建华[1] 李乐凡[1] 罗文杰[1] 林华[1] 汪志芬[1] 方林[1] 

机构地区：[1]海南大学,海南海口570228

出　　处：《橡胶科技》2013年第9期18-21,共4页Rubber Science and Technology

基　　金：海南省自然科学基金项目(511109);海南大学青年基金项目(qnjj1172)

摘　　要：采用热重分析法研究氮气气氛下甜菜碱对异戊橡胶(IR)热降解性能的影响。结果表明:添加甜菜碱不会改变IR的热降解机理;添加甜菜碱的IR胶料的起始降解温度、最大降解温度和反应活化能均比未添加甜菜碱的IR胶料高,表明甜菜碱提高了IR胶料的热稳定性。The effects of betaine on thermodegradation properties of the polyisoprene rubber （IR） were studied by thermogravimetry analysis （TG） in nitrogen atmosphere. The results showed that after added with betaine, the thermal degradation mechanism of IR has not changed, the initial temperature of mass loss, the peak temperature of mass loss and the reaction activation energy of IR are higher than those of compound IR without betaine. The thermal stability of IR is improved by betaine.

关 键 词：甜菜碱 异戊橡胶 热降解 动力学 热重分析 差热分析 

分 类 号：TQ333.3[化学工程—橡胶工业]