Synthesis, curing behavior and thermal properties of silicon-containing hybrid polymers with Si-CC units

被引：18

作者：

Chen, Mingfeng ^{[1
]}

Xiong, Pulan ^{[1
]}

Zhou, Quan ^{[1
]}

Ni, Lizhong ^{[1
]}

Wang, Gengchao ^{[1
]}

机构：

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

来源：

POLYMER INTERNATIONAL | 2014年 / 63卷 / 08期

基金：

中国国家自然科学基金;

关键词：

silicon-containing hybrid polymer; heat-resistant polymer; curing behavior; thermal stability; COMPOSITES; PYROLYSIS; RESIN;

D O I：

10.1002/pi.4661

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Three novel kinds of linear silicon-containing hybrid polymers with Si-C C units were synthesized by polycondensation reactions using the Grignard reagent method. All the polymers were thermosetting, highly heat-resistant, moldable and easily soluble in common organic solvents. The structure, curing behavior, thermal and oxidative properties were characterized using Fourier transform infrared spectroscopy, H-1 NMR, C-13 NMR, gel permeation chromatography, differential scanning calorimetry and thermogravimetric analysis. The results obtained can provide theoretical guidance for determining the curing of the resin system. In addition, the cured polymers exhibit excellent thermal and oxidative stabilities with temperatures of 5% weight loss (T-d5) above 480 degrees C and 450 degrees C in nitrogen and air respectively; the residues at 1000 degrees C were above 70.0% and 45.0% respectively. The thermal and oxidative stabilities of the polymers are attributed to a crosslinking reaction between the Si-H and C C bonds or C C bonds. These polymers have the potential for use as high-temperature-resistant resins and ceramic precursors. (C) 2013 Society of Chemical Industry

引用

页码：1531 / 1536

页数：6

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