文献类型：期刊文献

中文题名：硅炔杂化树脂改性有机硅树脂及其复合材料的性能

英文题名：Properties of Silicone Resin Modified with Silicone-Acetylene Resin and Its Composites

作者：徐彬[1];周权[1];倪礼忠[1]

机构：[1]华东理工大学材料科学与工程学院特种功能高分子材料及相关技术教育部重点实验室,上海200237

年份：2012

卷号：25

期号：2

起止页码：148

中文期刊名：功能高分子学报

外文期刊名：Journal of Functional Polymers

收录：CSTPCD;;北大核心:【北大核心2011】；CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：有机硅树脂;树脂改性;耐高温复合材料

外文关键词：silicone resin resin modification high temperature resistant composites

摘要：用一种硅炔杂化树脂聚(甲基硅烷-二乙炔基苯)(PSP)改性有机硅树脂(HS),通过FT-IR和TGA研究了树脂体系的固化反应及耐热性,并对制备的复合材料进行力学性能、耐热性能和介电性能研究。结果表明:当HS与PSP的质量比为5∶5时综合性能最优,树脂体系在氮气氛围下质量损失5%时的温度(Td5)为691°C,1 000°C时质量保留率为88%;HS-PSP树脂短切玻纤复合材料冲击强度为21kJ/m2,弯曲强度为65MPa,200°C时的弯曲强度高温保留率为78%,介电常数为4.6,介电损耗因数为7.9×10-3,体积电阻为6.7×1013Ω。改性后的复合材料具有优异的力学、耐热和介电性能。
Silicone resin was modified with polymer of methyl-di-phenylaeetylene silane（PSP）. The cur- ing mechanism,heat resistance and mechanical properties of silicone resin and its composites were studied by FT-IR and TGA. Results show that when the mass ratio of HS to PSP is 5 ： 5,the temperature of 5% mass loss （Tds） of the cured blends is 691℃, residual of mass is 88% based on the initial mass at 1 000 ℃ in nitrogen. The impact strength is 21 kJ/m2 , the flexural strength is 65 MPa, the retention rate of flexur- al strength is 78%at 200 ℃, the dielectric constant is 4.6, the dielectric loss factor is 7.9× 10^-3 and the insulation resistance is 6.7 ×10^13Ω Composites have excellent properties of mechanics, high temperature- resistance and dielectric.