乙烯基改性聚碳硅烷热分解动力学研究  

Study on Thermal Decomposition Kinetic Parameters of Vinyl-Polycarbosilane

作　　者：李博弘[1] 曹先启[1] 陈泽明[1,2] 贾晓莹[1] 王超[1,2] 王勃[1,2] 王文博[1] 徐鑫[1] 

机构地区：[1]黑龙江省科学院石油化学研究院,黑龙江哈尔滨150040 [2]黑龙江省科学院高技术研究院,黑龙江哈尔滨150020

出　　处：《化学与粘合》2017年第2期102-104,共3页Chemistry and Adhesion

摘　　要：使用红外分析仪分析了乙烯基聚碳硅烷(PVCS)热分解前后的结构,采用热重分析法(TG),在空气气氛下分别以10,20,30,40,50℃/min的升温速率对PVCS的热分解进行了分析。实验结果表明PVCS在空气中1000℃失重率为6.7%~9.3%,主要热失重的温度范围为310~800℃;采用Kissinger方程和Flynn-Wall-Ozawa方程对PVCS热分解动力学常数进行了计算,分别得出PVCS的热分解活化能为158.39k J/mol和164.65kJ/mol。The molecular structures of vinyl-polycarbosilane （PVCS） before and after thermal decomposition were analyzed by IR. The pyrolysis characteristics and dynamics of PVCS was studied with the thelxnogravimetrie analysis at different heating rates （10, 20, 30, 40 and 50℃/min）. The result showed that the thermal weight loss of vinyl-polyearhosilane in air at 1000℃ was 6.7% to 9.3% . The thermal decomposition temperature was 310℃ to 800℃. The thermal decomposition kinetic constant of PVCS was calculated by Kissinger＇s equation and Flynn-Wall-Ozawa＇s equation. And the thermal decomposition activation energy of PVCS was 158.39kJ/mol and 164.65kJ/mol.

关 键 词：乙烯基聚碳硅烷 热分解 动力学 先驱体聚合物 

分 类 号：TQ323.7[化学工程—合成树脂塑料工业] O634.41[理学—高分子化学]