采用固相烧结法制备了莫来石纤维增强多孔玻璃基复合材料,研究了莫来石纤维含量与多孔玻璃微观结构、密度、抗折强度及应力储能模量之间的关系.采用 XRD、SEM 等检测手段对复合材料的物相组成及断面的微观形貌进行测试,阿基米德法测其密度与开气孔率,使用万能材料试验机测试其抗折强度,使用动态热机械分析仪(DMA)对其应力储能模量进行测试.结果表明,随着莫来石纤维含量的增加,多孔玻璃的孔径大小趋于均匀,闭孔结构增多,但过多莫来石纤维的加入,会产生许多微孔,抗折强度和密度都随莫来石纤维含量的增加而增大,加入10%(质量分数)的莫来石纤维时,比强度达到最大值为0.012m2/s2.在加入莫来石纤维后,应力储能模量明显降低,韧性得到改善.
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