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 |
DOI号: |
分类号: TQ174 |
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. |
基金项目: |
国家“863”计划课题(2012AA03A606)、江苏高校优势学科建设工程资助项目(PAPD) |
作者简介: |
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 |
参考文献: |
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