文献类型：期刊文献

英文题名：Thermal stability of the copolymers of silicon-containing arylacetylene resin and acetylene-functional benzoxazine

作者：Zhang, Jian[1,2];Huang, Jianxiang[2];Du, Wei[3];Huang, Farong[2];Du, Lei[2]

机构：[1]XiAn Univ Technol, Dept Appl Chem, Xian 710048, Peoples R China;[2]E China Univ Sci & Technol, Minist Educ, Key Lab Ultrafine Mat, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China;[3]Shanghai Composites Sci & Tech Co Ltd, Shanghai, Peoples R China

年份：2011

卷号：96

期号：12

起止页码：2276

外文期刊名：POLYMER DEGRADATION AND STABILITY

收录：;EI(收录号：20114514505948);WOS:【SCI-EXPANDED(收录号:WOS:000297877100030)】；

基金：We gratefully acknowledged the financial support of the National High Technology Research and Development Program of China (Grant No. 2002AA305103) and Scientific Research Program Funded by Shaanxi Provincial Education Department (Program No.11JK0842).

语种：英文

外文关键词：Silicon-containing arylacetylene resins; Acetylene-functional benzoxazine; Thermal property; Degradation; Ablation

摘要：Acetylene-functional benzoxazine resin (AFBEN) was used to modify silicon-containing aryacetylene resin (SCAAR). The thermal stability, degradation and ablation mechanisms were investigated. Based on the results of Py/GC/MS methods, we concluded that the cross-linking reactions of poly (dimethylsilyleneethynylene-phenyleneethynylene)(DMSEPE, a class of SCAAR) were due to (1) the Diels-Alder reaction between Ph-C C and C C, (2) the ring trimerization of C C and (3) radical polymerization of C C to form polyene structure. During the curing of AFBEN, polyene was the main product of the polymerization of ethynyl in AFBEN and the activation of the para positions of the aniline ring increased due to the introduction of ethynyl. XRD and XPS results showed that SiO(2) and SiC formed on the surface of the composites in the process of ablation. (C)2011 Elsevier Ltd. All rights reserved.