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- 2015
多孔颗粒状HAPw/n-ZnO复合材料的制备工艺研究
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Abstract:
摘要 目的:将粉末状羟基磷灰石晶须纳米氧化锌(HAPw/ n-ZnO)复合材料制备成多孔颗粒状。方法:以HAPw/n-ZnO复合材料为原料,加入硅溶胶在不同温度下煅烧并借X射线衍射(XRD)分析确定硅溶胶与HAPw/n-ZnO发生化学反应的温度。再加入控制粒径100~250 μm的造孔剂聚甲基丙烯酸甲酯(PMMA)及30wt%的硅溶胶为粘接剂,以魔芋萄甘聚糖(KGM)凝胶冷压过模成型烧结后粉碎过筛,应用X射线衍射、扫描电镜、万能试验机、阿基米德排水法测试分析。结果:硅溶胶与HAPw/n-ZnO在高于600 ℃时会发生反应;烧结600 ℃保温2 h孔隙率最为理想;造孔剂含量为40 VOL%时孔隙率为64.2%,抗压缩强度为0.9 MPa。结论:造孔剂法可制备多孔HAPw/n-ZnO复合材料
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