Study on the Pyrolysis Behavior of Polycarbosilane  

作　　者：陈文怡 ZHOU Jian 

机构地区：[1]Materials Research and Testing Center, Wuhan University of Technology [2]State Key Lab of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2015年第4期679-683,共5页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the Natural Science Foundation of Hubei Province(No.2013CFB340)

摘　　要：The pyrolysis behavior of polycarbosilane （PCS） and chemical reaction mechanism during the pyrolysis process were studied by thermogravimetric-mass spectrometry （TG-MS） combined with X-ray diffraction and infrared spectroscopic analysis methods. The experimental results indicate that the main gas phase products generated during pyrolysis of PCS in nitrogen atmosphere include H2, -CH3 and CH4. The heating rate has a large effect on the pyrolysis process of PCS, the lower heating rate releases more small molecule gases and gets bigger rate of pyrolysis mass loss, demonstrating that the lower heating rate is beneficial to fully pyrolysis of PCS and obtain ceramics products with better microstructure.The pyrolysis behavior of polycarbosilane （PCS） and chemical reaction mechanism during the pyrolysis process were studied by thermogravimetric-mass spectrometry （TG-MS） combined with X-ray diffraction and infrared spectroscopic analysis methods. The experimental results indicate that the main gas phase products generated during pyrolysis of PCS in nitrogen atmosphere include H2, -CH3 and CH4. The heating rate has a large effect on the pyrolysis process of PCS, the lower heating rate releases more small molecule gases and gets bigger rate of pyrolysis mass loss, demonstrating that the lower heating rate is beneficial to fully pyrolysis of PCS and obtain ceramics products with better microstructure.

关 键 词：POLYCARBOSILANE pyrolysis behavior thermogravimetric-mass spectrometry heating ratemass loss 

分 类 号：TQ264.17[化学工程—有机化工]