用非等温差示扫描量热法研究甜菜碱对聚异戊二烯橡胶硫化动力学的影响  

Effect of betaine on vulcanization kinetics of polyisoprene rubber by non-isothermal differential scanning calorimetry

作　　者：罗文杰[1] 汪志芬[1] 李思东[2] 方林[1] 潘雪梅[1] 何明[1] 高扬建树[1] 

机构地区：[1]海南大学材料与化工学院,海口570228 [2]广东海洋大学理学院,广东湛江524088

出　　处：《合成橡胶工业》2013年第5期346-349,共4页China Synthetic Rubber Industry

基　　金：海南省自然科学基金资助项目(511109)

摘　　要：通过非等温差示扫描量热(DSC)法研究了甜菜碱(BE)对聚异戊二烯橡胶(IR)硫化反应动力学的影响,采用Ozawa法、Kissinger法和Crane方程确定了体系的表观反应活化能、反应级数等硫化反应动力学参数。结果表明,不同BE含量IR体系的DSC曲线与纯IR体系相似,均存在1个放热峰;BE的加入降低了IR体系硫化放热峰的温度和硫化反应活化能,具有一定的促进硫化作用,但对反应级数影响不大。The effect of betaine （BE） on vulcanization reaction kinetics of polyisoprene rubber（IR）system was investigated by non-isothermal differential scanning calorimetry （DSC）,the vulcanization reaction kinetics parameters,such as apparent activation energy,reaction order were confirmed by using the Ozawa,Kissinger and Crane equations.The results showed that the dynamic DSC curves for the IR systems containing different BE amounts with an exothermic peak were similar to that of the neat IR system.The addition of BE in BE/IR systems decreased the temperature of vulcanization exothermic peak and apparent activation energy of vulcanization,that indicated BE could promote the vulcanization reaction of IR system,but not affect evidently reaction order.

关 键 词：甜菜碱 聚异戊二烯橡胶 硫化 反应动力学 差示扫描量热法 

分 类 号：TQ333.3[化学工程—橡胶工业]