抗氧剂1520对溴化丁基橡胶热降解行为的影响  

The Effect of Antioxidant 1520 on the Thermal Degradation Behavior of Brominated Butyl Rubber

作　　者：肖琪[1,2] 李树新[2] 陈琼枫 武海川 

机构地区：[1]北京化工大学材料科学与工程学院,北京100029 [2]北京石油化工学院材料科学与工程学院,特种弹性体复合材料北京市重点实验室,北京102617 [3]辽宁石油化工大学化学化工与环境学部,辽宁抚顺113001

出　　处：《石油化工高等学校学报》2014年第5期1-6,共6页Journal of Petrochemical Universities

基　　金：国家重点基础研究发展计划(2012CB626800)

摘　　要：采用溶液法制备溴化丁基橡胶(BIIR),添加液体抗氧剂1520。为考察抗氧剂1520对BIIR热降解行为的影响,用热重分析仪在不同的升温速率下对橡胶进行热分解测定,采用Kissinger法和Flynn-Wall-Ozawa法计算非等温热分解反应的表观活化能,并用Coats-Redfern方程推断抗氧剂1520加入前后BIIR的热分解机理函数。结果表明,通过Kissinger法和Flynn-Wall-Ozawa法得到的结果一致,抗氧剂1520的加入明显提高了BIIR的热降解反应表观活化能。用Coats-Redfern方程推断出抗氧剂1520的加入使得BIIR的热分解反应机理由相界面反应机理转变为更复杂的三级化学反应机理。BIIR was synthesized by solution method and antioxidant 1520 was added in the process.In order to investigate the impact of antioxidant 1520 on the thermal degradation behavior of BIIR,the TG was used to investigate the thermal decomposition of BIIR under different heating rate.Kissinger method and Flynn-Wall-Ozawa method were used to calculate the apparent activation energy of the non-isothermal decomposition reactions of BIIR,and Coats-Redfern equation was used to deduce the thermal decomposition mechanism of BIIR added antioxidant 1520 before and after.The results showed that the activation energy calculated by Kissinger and Flynn-Wall-Ozawa methods was consistent,and the addition of antioxidant 1520 significantly improved the thermal degradation reaction apparent activation energy of BIIR.It can be deduced from the Coats-Redfern equation that the addition of antioxidant 1520 made the thermal decomposition reaction mechanism of BIIR change from the phase interface reaction mechanism into more complex chemical reaction mechanism of tertiary.

关 键 词：抗氧剂1520 溴化丁基橡胶 热重法 动力学分析 

分 类 号：TE626-8[石油与天然气工程—油气加工工程]