阻燃SEBS共混材料的热分解动力学  

Thermal Decomposition Kinetics of Flame Retarded SEBS Blends

作　　者：徐建波[1] 周涛[1] 郑红娟[1] 张爱民[1] 

机构地区：[1]四川大学高分子研究所高分子材料工程国家重点实验室

出　　处：《高分子材料科学与工程》2008年第7期113-116,共4页Polymer Materials Science & Engineering

基　　金：国家863资助项目(2003AA333020)

摘　　要：采用TG分析测试阻燃SEBS共混材料的热分解过程,并用Friedman微分法和非线性回归进行动力学分析,探讨其热分解机理。分析结果表明,膨胀型与金属氢氧化物阻燃的SEBS共混材料的热分解过程为多步平行反应,极限氧指数随分解活化能的提高而提高。极限氧指数LOI测试表明,两体系能有效阻燃SEBS共混材料。Thermal decomposition reactions of flame retarded SEBS blends were studied. Thermogravimetry and limited oxygen index analysis has been used to test the thermal and flame-retarded properties of samples. Friedman-analysis and multivariate-nonlinear regression has been adopted to kinetic analyze samples. The results show that the thermal decomposition of SEBS blends mixed intumescent or hydrate flame retarded systems is multiple independent parallel reaction. The limiting oxygen index of blends which composed approximately increased when the activation energy of decomposition increased. The tests of limiting oxygen index shows intumescent or hydrate flame retarded system can retarded SEBS blends flame efficiency.

关 键 词：热塑性弹性体SEBs 热分解 阻燃 

分 类 号：O631.31[理学—高分子化学]