通过甲基丙烯酸甲酯本体聚合发泡的新方法,制备了多孔PMMA/SiO2纳米复合材料.对所得复合材料的压缩力学性能进行了研究,分析了实验结果.实验结果表明,复合材料的压缩应力-应变曲线具有多孔泡沫材料明显的三阶段特征即线弹性段、塑性屈服平台段及致密段;随着复合材料中纳米颗粒含量的增加,材料的压缩弹性模量和抗压强度也随之增大;而对于同一纳米颗粒含量的复合材料来说,随着变形速率的增大,材料的抗压强度随之增大.
参考文献
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