作　　者： ; ; ; ;

机构地区： 哈尔滨工业大学化工学院应用化学系

出　　处： 《固体火箭技术》 2008年第5期531-534,共4页

摘　　要： 研究了不同浸渍工艺对2D高硅氧织物增强甲基硅树脂复合材料结构与性能的影响。结果表明,复合材料的密度及抗氧化性随着浸渍循环次数和热裂解温度的增加而增加;当热裂解温度不高于400℃时,复合材料仍具有较好的假塑性;但当热裂解温度高于400℃时,复合材料表现为典型的脆性断裂。当浸渍过程中热裂解温度为400℃、循环次数为2次时,500℃热处理20 m in的复合材料的室温弯曲强度最高,为49.8 MPa,比未处理的提高了150%。 The effects of different polymer infiltration pyrolysis （PIP）process on microstructure and mechanical properties of 2D silica glass/methyl silicone composites were investigated. The results show that density and oxidization resistance of the composite increase with PIP cycle times and the pyrolysis temperature. When the pyrolysis temperature is less than 400℃, the composite possesses excellent pseudoplastic properties ; when the pyrolysis temperature is above 400℃, the composite presents typical brittle fracture. The investigation results indicate that when the pyrolysis temperature is 400℃ and PIP cycle times is 2, the flexural strength of the composites at room-temperature can be up to the maximum 49.8 MPa,which is 150% higher than that of the untreated composite.

关 键 词： 聚合物浸渍裂解 复合材料 甲基硅树脂 结构与性能

领　　域： [一般工业技术]