文献类型：会议论文

英文题名：Synthesis, characterization and thermooxidative properties of hybrid block poly(silane-b-arylacetylene)

作者：Xu, Ying Jie[1]; Qi, Hui Min[1]; Zhu, Ya Ping[1]; Wang, Fan[1]

机构：[1] Key Laboratory of Specially Functional Polymeric Materials and Related Technology, East China University of Science and Technology, Ministry of Education, School of Materials Science and Engineering East China University of Science and Technology, Shanghai 200237, China

会议论文集：Advanced Materials and Technologies

会议日期：June 14, 2014 - June 15, 2014

会议地点：Xiamen, China

语种：英文

外文关键词：Curing - Polycondensation - organic-inorganic materials - Condensation reactions - Polysilanes - Zinc chloride

摘要：Organic-inorganic hybrid block Poly(silane-b-arylacetylene) (PSbA) have been synthesized through condensation polymerization between chloro-terminated polysilane and diethynylbenzene Grignard reagent, and chloro-terminated polysilane was synthesized through condensation polymerization of dichloromethylvinylsilane in the presence of Mg metal and Lewis acid (ZnCl2, LiCl). The structures of PSbAs were characterized by FTIR, 1H, 13C, 29Si. NMR, and GPC. The PSbAs are orange viscous liquid and can be soluble in common organic solvents at room temperature. The thermal cure behavior of PSbAs was determined by DSC, and the thermal and oxidative stability of the cured PSbAs were investigated using TGA. The results showed that the cured PSbAs exhibit high thermal and thermooxidative stability. The degradation temperatures at 5% weight loss for the cured PSbAs are 470-533°C under N2 and 378-456°C under air, and the residue yields at 1000°C are 77.9-82.8% under N2 and 40.4-50.5% under air. ? (2014) Trans Tech Publications, Switzerland.