文献类型：期刊文献

英文题名：Synthesis and characterization of novel silicon-containing aromatic bispropargyl ether resins and their composites

作者：Li, Fangfang[1];Wang, Canfeng[1];Shen, Xuening[1];Huang, Farong[1];Du, Lei[1]

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

年份：2011

卷号：43

期号：7

起止页码：594

外文期刊名：POLYMER JOURNAL

收录：;EI(收录号：20112814142322);WOS:【SCI-EXPANDED(收录号:WOS:000292377500002)】；

语种：英文

外文关键词：bispropargyl ether bisphenol; composite; silicon-containing aromatic bispropargyl ether resin; thermal stability

摘要：A series of silicon-containing aromatic bispropargyl ether resins-poly(dimethylsilylene-co-propynylene ether resorcinol) [-Si(CH3)(2)-C C-CH2-O-Ar-O-CH2-C C-](n) (polymer a), poly(dimethylsilylene-co-propynylene ether bisphenol A) [-Si(CH3)(2)-C C-CH2-O-Ar-C(CH3)(2)-Ar-O-CH2-C C-](n) (polymer b) and poly(dimethylsilylene-co-propynylene ether hexafluorobisphenol A) [-Si(CH3)(2)-C C-CH2-O-Ar-C(CF3)(2)-Ar-O-CH2-C C-](n) (polymer c)-were synthesized from bispropargyl ethers bisphenol and dimethyldichlorosilane by a Grignard reaction. The polymers were characterized by Fourier transform infrared, hydrogen-1 nuclear magnetic resonance, gel-permeation chromatography, rheological analysis, differential scanning calorimetry and thermogravimetric analysis. The results showed that the obtained polymers could be cured at similar to 240 degrees C and displayed good heat resistance and processing properties. Degradation temperatures of the three cured polymers at 5% weight loss (T-d5) were above 400 degrees C, and thermal stabilities increased in the order polymer c < polymer b < polymer a. Carbon fiber (T300)-reinforced composites were prepared by a solution-impregnation process using tetrahydrofuran as solvent. The flexural strength, flexural modulus and shear strength of the composites of polymer c reached 408 MPa, 53.3 GPa and 24.8 MPa, respectively, which were higher than those of polymers a and b. Polymer Journal (2011) 43, 594-599; doi:10.1038/pj.2011.39; published online 27 April 2011