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首次报道了采用超声、高速剪切分散的方法制备二氧化双环戊二烯与二氧化硅纳米复合材料。对制得的材料进行了力学性能测试、电镜扫描、热失重测试分析。结果表明,纳米复合材料的力学性能有很大的提高,其中当二氧化硅添加的质量分数为4%时,复合材料的冲击强度达到了36.57J/M,比纯树脂提高了252%。扫描电镜分析表明:复合材料的断口呈复杂的鱼鳞状,说明复合材料形成的新表面多,吸收的冲击能多。热失重分析表明:复合材料的高温热稳定性有明显提高,二氧化硅添加的质量分数为4%的复合材料在400℃时失重率比纯树脂减少了25%。
For the first time reported the synthesis of dicyclopentadiene dioxide and silica nanocomposites by ultrasonic, high-speed shear dispersion method. The mechanical properties of the prepared material testing, scanning electron microscopy, weight loss test analysis. The results show that the mechanical properties of the nanocomposites have been greatly improved. When the mass fraction of silica is 4%, the impact strength of the composites reaches 36.57J / M, which is 252% higher than the pure resin. Scanning electron microscopy analysis showed that: the fracture of the composite material showed a complex fish scale shape, indicating that the composite material formed more new surfaces and absorbed more impact energy. Thermogravimetric analysis showed that the thermal stability of composites increased obviously. The weight loss of composites with 4% silica added at 400 ℃ was 25% less than that of pure resins.