固体火箭技术2016，Vol.39Issue(1)：111-115,5.DOI:10.7673/j.issn.1006-2793.2016.01.020
硼改性硅炔杂链聚合物的合成及其耐热氧化稳定性
Synthesis and thermal oxidation stability of boron modified silicon-alkyne heterochain polymer
摘要
Abstract
A kind of boron-modified silicone alkyne hybrid polymer ( HPBS) was prepared. The polymer was synthesized with ethynylmagnesium bromide, methyldichlorosilane and boron chloride by using Grignard reagent method. The structure of HPBS was characterized by GPC, FT-IR, 1 H-NMR and 13 C-NMR. Differential scanning calorimetry ( DSC) and FT-IR were used to study the curing behaviors. The thermal and oxidation stability of the cured polymer was investigated by thermal gravimetry analysis ( TGA) and XRD. The results show that HPBS can be thermally crosslinked. The temperature of 5% weight loss ( Td5 ) of HPBS were 621℃and 556 ℃ in nitrogen and air, respectively;and the residues at 1 000℃ were 85.9% and 72.6%, respectively. The inorganic ele-ments of silicon and boron can be converted into oxidation resistant materials such as B2 O3 , SiO2 , B4 C and SiC at high tempera-tures. The HPBS resin shows excellent heat resistance and oxidation stability.关键词
硼改性/硅炔聚合物/耐热性能/抗氧化性能Key words
boron-modified/silicon-alkyne polymer/thermal stability/oxidation stability分类
航空航天引用本文复制引用
周华,陈麒,周权,倪礼忠..硼改性硅炔杂链聚合物的合成及其耐热氧化稳定性[J].固体火箭技术,2016,39(1):111-115,5.基金项目
国家自然科学基金(51073053) （51073053）
中国博士后科学基金(2013M541486) （2013M541486）
上海市博士后科研资助计划。 （）
