Synthesis and kinetics of non-isothermal degradation of acetylene terminated silazane  

作　　者：Wei Jian Han Li Ye Ji Dong Hu Tong Zhao 

机构地区：[1]Laboratory of Advanced Polymer Materials,Center for Molecular Science,Institute of Chemistry,Chinese Academy of Sciences, Beijing 100190,China [2]Graduate University of the Chinese Academy of Sciences,Beijing 100190,China

出　　处：《Chinese Chemical Letters》2011年第2期139-142,共4页中国化学快报（英文版）

摘　　要：Novel acetylene terminated silazane compounds,with three types of substituent,were synthesized by the aminolysis of dichlorosilane with 3-aminophenylacetylene（3-APA）.Thermal property of the compounds is studied by thermogravimetry analysis （TGA）.It shows that the acetylene terminated silazane has high temperature resistance.The char yield at 1000℃is 77.6,81.9 and 68.7 wt%for methyl,vinyl,and phenyl substituted silazane,respectively.The pyrolysis kinetics of the silazane is investigated by non-isothermal thermogravimetric measurement.The pyrolysis undergoes three stages,which is resolved by PEAKFTT.The kinetic parameters are calculated by the Kissinger method.The role of functionalities on the thermal resistance is discussed.The vinyl-silazane exhibits higher thermal stability because of higher cross-linking density.Novel acetylene terminated silazane compounds,with three types of substituent,were synthesized by the aminolysis of dichlorosilane with 3-aminophenylacetylene（3-APA）.Thermal property of the compounds is studied by thermogravimetry analysis （TGA）.It shows that the acetylene terminated silazane has high temperature resistance.The char yield at 1000℃is 77.6,81.9 and 68.7 wt%for methyl,vinyl,and phenyl substituted silazane,respectively.The pyrolysis kinetics of the silazane is investigated by non-isothermal thermogravimetric measurement.The pyrolysis undergoes three stages,which is resolved by PEAKFTT.The kinetic parameters are calculated by the Kissinger method.The role of functionalities on the thermal resistance is discussed.The vinyl-silazane exhibits higher thermal stability because of higher cross-linking density.

关 键 词：Silazane Thermal properties Pyrolysis kinetics 

分 类 号：TQ241.22[化学工程—有机化工] TQ225.241