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中文摘要: 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21 kJ/m2，弯曲强度为65 MPa，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6.7×1013 Ω。改性后的复合材料具有优异的力学、耐热和介电性能。
Abstract: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 (Td5) of the cured blends is 691 °C, residual of mass is 88％ based on the initial mass at 1 000 °C in nitrogen. The impact strength is 21 kJ/m2, the flexural strength is 65 MPa, the retention rate of flexural strength is 78% at 200 °C, the dielectric constant is 4.6, the dielectric loss factor is 7.9×10-3 and the insulation resistance is 6.7×1013 Ω. Composites have excellent properties of mechanics, high temperature resistance and dielectric.
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徐彬,周权,倪礼忠.硅炔杂化树脂改性有机硅树脂及其复合材料的性能[J].功能高分子学报,2012,25(2):.
XU Bin,ZHOU Quan,NI Li zhong.Properties of Silicone Resin Modified with Silicone Acetylene Resin and Its Composites[J].Journal of Functional Polymers,2012,25(2):.
徐彬,周权,倪礼忠.硅炔杂化树脂改性有机硅树脂及其复合材料的性能[J].功能高分子学报,2012,25(2):.
XU Bin,ZHOU Quan,NI Li zhong.Properties of Silicone Resin Modified with Silicone Acetylene Resin and Its Composites[J].Journal of Functional Polymers,2012,25(2):.
