Citation: Wei Jian Han, Li Ye, Ji Dong Hu, Tong Zhao. Synthesis and kinetics of non-isothermal degradation of acetylene terminated silazane[J]. Chinese Chemical Letters, ;2011, 22(2): 139-142. doi: 10.1016/j.cclet.2010.10.001 shu

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

Wei Jian Han ^a,b, ,
Li Ye ^a,b ,
Ji Dong Hu ^a ,
Tong Zhao ^a

a Laboratory of Advanced Polymer Materials, Center for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China;
b Graduate University of the Chinese Academy of Sciences, Beijing 100190, China

Received Date: 4 May 2010

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 PEAKFIT. 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.
- Silazane,
- Thermal properties,
- Pyrolysis kinetics
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