Synthesis, characterization, and thermal properties of new silarylene-siloxane-acetylene polymers

被引：8
作者：
Wang, Rui [1 ,2 ]
Fang, Lei [1 ,2 ]
Xu, Caihong [1 ]
机构：
[1] Chinese Acad Sci, Inst Chem, BNLMS, Beijing 100190, Peoples R China
[2] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
来源：
EUROPEAN POLYMER JOURNAL | 2010年 / 46卷 / 03期
关键词：
Synthesis; Thermal properties; Silicon-containing polymer; Acetylene; Coupling reaction; HIGH-TEMPERATURE ELASTOMERS; HEAT-RESISTANT PROPERTIES; METAL-OXIDE COMPOSITES; DIACETYLENE POLYMERS; OPTICAL-PROPERTIES; SILICON; CERAMICS; COPOLYMERS; CONVERSION; POLY<(SILYLENE)DIACETYLENES>;
D O I：
10.1016/j.eurpolymj.2009.12.010
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
New silarylene-siloxane-acetylene polymers have been synthesized by coupling reactions employing 1,3-bis(p-ethynylphenyl)-1,1,3,3-tetraphenyldisiloxane (3) as the key monomer. Their thermal properties have been evaluated by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). All of the new polymers showed good thermal stability, with their temperatures at 5% weight loss (To) being higher than 540 degrees C under nitrogen and higher than 460 degrees C in air. Their char yields at 1000 degrees C under N-2 were above 80%. Broad exothermic peaks, attributable to reaction of the acetylenic units, were observed by DSC analysis in the temperature range 270-450 degrees C. (C) 2009 Elsevier Ltd. All rights reserved.
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收藏
页码：465 / 471
页数：7
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