膜科学与技术

粉体颗粒参数对多孔陶瓷支撑体性能的影响研究

作者：周永欣，林钰青，陈献富，邱鸣慧，范益群

单位：南京工业大学化学化工学院, 材料化学工程国家重点实验室, 南京 210009

关键词：多孔陶瓷；氧化铝；支撑体；颗粒参数

出版年,卷(期):页码： 2016,36(2):81-85

摘要：

分别采用三种规则形状的氧化铝为骨料，添加一定量的烧结助剂，通过干压成型法制备多孔支撑体. 考察了粉体颗粒参数（形状、粒径分布）对支撑体机械性能、微结构以及渗透性能的影响. 研究表明：以椭球形氧化铝为骨料，添加0.6wt.%的烧结助剂，1600℃烧成的多孔陶瓷膜支撑体三点弯曲强度达到80MPa以上，孔径为3.34 μm，孔隙率为34.8%，纯水渗透率在50 m3• m-1•h-1•bar-1以上.

A porous supportconsisting of spherical or ellipsoidal alumina as aggregate and a certain number of sintering aids was prepared by dry-pressing process. The effect of parameters of powder particle（particle shape,particle size distribution） on the porous support was investigated. The support, comprising ellipsoidal alumina as aggregate and 0.6wt.% of sintering aids, sintered at 1600℃,possessed great potential application with 3.34μm in pore size,34.8% open porosity as well as >80 MPa mechanical strength. The pure water flux value was above 50 m3• m-2•h-1•bar-1.

作者简介: 周永欣(1990-), 男, 江苏省盐城人, 硕士, 从事膜分离材料的研究与应用. *通讯联系人

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