宇航材料工艺2017，Vol.47Issue(3)：42-45,52,5.DOI:10.12044/j.issn.1007-2330.2017.03.010
新型SiBCN杂化树脂的固化及裂解机理
Curing and Pyrolysis Mechanism of Novel SiBCN Hybrid Resin
姚祺 1肖鲁 2韩大为 1左小彪 1冯志海1
作者信息
- 1. 航天材料及工艺研究所,北京100076
- 2. 北京宇航系统工程研究所,北京100076
- 折叠
摘要
Abstract
A novel SiBCN hybrid resin was prepared from 1,7-bis(dimethylsilyl)-m-carborane and viny-containing polysilazane.Composition,curing behavior,thermal stability,thermal pyrolysis reaction and process were studied by FT-IR,DSC,TGA and PyGC-MS.The curing and pyrolysis reaction activation energy were calculated by Kissinger equation and Flynn-Wall-Ozawa(FWO) methods.The pyrolysis mechanism of cured SiBCN was also analyzed.The results showed that there is one exothermic peak during the curing reaction,and its curing reaction activation energy is 113.55 kJ/mol.SiBCN possessed an excellent thermal stability with the T5d and the residue weight of 73.1％ at 900℃ in N2.The decomposition reaction activation energy of the resin and the thermal stability increased following by the reaction conversion.When the pyrolysis temperature reached 300℃,NH3 apperad resulting from the transamination reaction,whereas CH4,CH2=CH2 and alkene produced at 500℃ and further species of the pyrolysis gas such as alkanes and alkenes occured at 650℃.关键词
SiBCN杂化树脂/固化特性/热稳定性/PyGC-MS/裂解动力学Key words
SiBCN hybrid resin/Curing behavior/Thermal stability/PyGC-MS/Thermal pyrolysis kinetics分类
通用工业技术引用本文复制引用
姚祺,肖鲁,韩大为,左小彪,冯志海..新型SiBCN杂化树脂的固化及裂解机理[J].宇航材料工艺,2017,47(3):42-45,52,5.
