文献类型：期刊文献

英文题名：Synthesis and Properties of Arylacetylene Resins with Siloxane Units

作者：Gao, Fei[1];Zhang, Lingling[1];Tang, Lemin[1];Zhang, Jian[1];Zhou, Yan[1];Huang, Farong[1];Du, Lei[1]

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

年份：2010

卷号：31

期号：4

起止页码：976

外文期刊名：BULLETIN OF THE KOREAN CHEMICAL SOCIETY

收录：;EI(收录号：20101912920448);WOS:【SCI-EXPANDED(收录号:WOS:000277928900038)】；

基金：We gratefully acknowledge the financial support from the National High Technology Research and Development Program of China (Grant No.2002305205) and the National Basic Research Program of China (Grant No 18020006).

语种：英文

外文关键词：Arylacetylene resin with siloxane units; Diethynylbenzene; Siloxane; Organic-inorganic polymer; Ceramic

摘要：A series of arylacetylene resins with siloxane units were synthesized by the condensation reactions of m-diethynyl-benzene magnesium reagents with various alpha,omega-bis(chloro)dimethylsiloxanes These resins are liquids and arc miscible with common organic solvents at room temperature The structures of the resins were characterized by FT-IR. H-1 NMR, C-13 NMR, Si-29 NMR, and gel permeation chromatography (G PC). The thermal behaviors of the resins were examined with differential scanning calorimetry (DSC). These resins have good processability. They can be thermally crosslinked through the ethynyl groups to produce cured resins The thermal and thermooxidative stabilities of the cured resins were studied by thermogravimetric analysis (TGA). The cured resins possess high thermal and thermooxidative stability Their decomposition occurs at above 500 degrees C in both N-2 and air With increasing the length of siloxane units in the resins, the thermal stability of the cured resins decreases in N-2 When the cured resins were sintered above 1450 degrees C under argon, hard and glassy SiOC ceramics were obtained These SiOC ceramics have the decomposition temperatures at 5% weight loss above 800 degrees C in air