以硫化反应活化能评价胶料中不溶性硫黄的热稳定性  

Evaluation of Thermal Stability of Insoluble Sulfur in Compound by Vulcanization Reaction Activation Energy

作　　者：李梁 高杨 张进 LI Liang;GAO Yang;ZHANG Jin(Sennics Co.,Ltd,Shanghai 200126,China)

机构地区：[1]圣奥化学科技有限公司,上海200126

出　　处：《橡胶工业》2022年第5期384-388,共5页China Rubber Industry

摘　　要：利用胶料的硫化反应活化能(E_(a))评价胶料中不溶性硫黄(IS)的热稳定性。结果表明:含有不同热稳定性的IS胶料的硫化曲线有细微差别,但IS的热稳定性对胶料的硫化速度的影响无明显规律;胶料的E_(a)大小顺序与IS的热稳定性高低顺序相反,热稳定越高的IS,其胶料的E_(a)越小,热稳定性越低的IS,其胶料的Ea越大;胶料的游离硫元素含量及表面粘性测试结果表明,胶料中IS的热稳定性与原材料IS的热稳定性和胶料的E_(a)测试结果相应,利用胶料的E_(a)与原材料IS的热稳定性之间的关系,可以评价胶料中IS的热稳定性。The thermal stability of insoluble sulfur(IS)in compounds was evaluated by the vulcanization reaction activation energy(E_(a))of the compounds.The results showed that the vulcanization curves of the compounds with IS having different thermal stability were slightly different,but the thermal stability of IS had no obvious effect on the vulcanization speed of the compound.The order of the E_(a) from large to small of the compound was opposite to that of the thermal stability from high to low of IS.The higher the thermal stability of IS was,the smaller the E_(a) of the compound was,and the lower the thermal stability of IS was,the larger the E_(a) of the compound was.The test results of the free sulfur element content and surface tackiness of the compound showed that the thermal stability of IS in the compound corresponded with the test results of the thermal stability of raw material IS and the E_(a) of the compound.The thermal stability of IS in the compound could be evaluated by using the E_(a) of the compound and the thermal stability of raw material IS.

关 键 词：不溶性硫黄 热稳定性 硫化反应 活化能 硫元素含量 

分 类 号：TQ330.385[化学工程—橡胶工业] TQ330.72