文献类型：期刊文献

英文题名：Silicon alkyne hybrid polymers containing Si-H and Si-CH3: Synthesis, characterization, and thermal and oxidative properties

作者：Liu, Shuaishuai[1];Zhou, Quan[1];Peng, Zhengqiang[1];Song, Ning[1];Ni, Lizhong[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Special Funct Polymer Mat & Related Techn, Minist Educ, Shanghai 200237, Peoples R China

年份：2018

卷号：30

期号：3

起止页码：259

外文期刊名：HIGH PERFORMANCE POLYMERS

收录：;EI(收录号：20181304946414);WOS:【SCI-EXPANDED(收录号:WOS:000429810900001)】；

语种：英文

外文关键词：Silicon alkyne hybrid; thermal oxidation resistance; curing behavior

摘要：A silicon-containing polymer (HMSA), synthesized with n-BuLi, trichloroethylene, dichloromethylsilane, and dimethyldichlorosilane, with three different proportions of Si-H, and its influence on thermal oxidation have been studied. The structures of HMSA were characterized by Fourier transform infrared spectra, H-1-Nuclear Magnetic Resonance (H-NMR), C-13-NMR, Si-29-NMR, and gel permeation chromatography. Thermal and oxidative stabilities were studied by differential scanning calorimetry and thermogravimetric analysis, and the cross-linking reaction mechanisms of the HMSA were discussed. All the polymers exhibited excellent thermal and oxidation resistance; particularly, HMSA-1 showed high heat-resistant and thermo-oxidative stability; the temperatures of 5% weight loss (Td(5)) were 636.3 and 645.5 degrees C, and the residues at 1000 degrees C were 87.07 and 86.23% in nitrogen and air, respectively. This system had excellent thermal and oxidative stability, and through the structure design, control of heat oxidation resistance was realized.