摘要
以高硅氧短切纤维毡为增强体,分别以酚醛树脂和酚醛泡沫为基体,制备了高硅氧/酚醛与高硅氧/酚醛泡沫两种复合材料,采用红外光谱分析、扫描电镜分析、热失重分析等方法对其结构和性能进行了表征。结果表明,两种材料具有相似的基体化学结构和相近的固化反应温度,均具有良好的耐热性能,性能测试结果表明,复合材料中基体由酚醛树脂变成酚醛泡沫后,力学性能明显降低,同时,密度由1.65 g/cm3降低至0.5 g/cm3,热导率由0.5 W/(m·K)降低至0.09 W/(m·K)。
High silica glass fiber （hSGF） reinforced phenolic （PF）and phenolic foam （PFa） composites were prepared, and the structure and properties of the composites were characterized by Infrared spectroscopy, scanning electron microscopy （SEM） and thermogravimetric analysis （TGA）. The results show that the hSGF/PFa composites have similar chemical structure and curing reaction temperature in comparison to hSGF/phenolic resin （PF） composites, and both have good heat resistance. The properties of the composites were investigated. The density and the thermal conductivity decrease from 1.65 g/cm^3 and 0.5 W/（m·K） to 0.5 g/cm^3 and 0.09 W/（ m·K）, respectively, with decrease of the mechanical strength, when the matrix was changed from PF to PFa.
作者
李寅
吴文敬
王晓静
吴亮
李阳
LI Yin;WU Wenjing;WANG Xiaojing;WU Liang;LI Yang(Aerospace Research Institute of Materials ＆ Processing Technology,Beijing 100076)
出处
《宇航材料工艺》
CAS
CSCD
北大核心
2018年第5期26-29,共4页
Aerospace Materials & Technology
关键词
酚醛泡沫
复合材料
密度
隔热
Phenolic foam
Composites
Density
Insulation
