预封孔法制备高渗透性陶瓷微滤膜  

Preparation of Highly Permeable Ceramic Microfiltration Membrane via a Pre-sealing Method

作　　者：秦伍 张翼[2] QIN Wu;ZHANG Yi(Guangdong Dowstone Technology Co.,Ltd.,Jiangmen 529400,China;School of Materials Science and Hydrogen Energy,Foshan University,Foshan 528000,China)

机构地区：[1]广东道氏技术股份有限公司,江门529441 [2]佛山科学技术学院材料科学与氢能学院,佛山528000

出　　处：《中国陶瓷》2022年第1期20-28,共9页China Ceramics

基　　金：广东省科技厅项目(2016YT03G125)。

摘　　要：研究利用PVA与硼酸的界面交联络合反应在支撑体表面形成一层较致密的水凝胶层,预先封住支撑体的孔,然后在“PVA-硼酸”交联隔层表面通过一步成膜形成陶瓷过滤膜前驱体,从而设计出由陶瓷过滤膜前驱体、“PVA-硼酸”交联隔层与支撑体组成的三明治结构。将“PVA-硼酸”交联隔层的厚度控制在10μm左右能够使烧成后陶瓷过滤膜顶层与支撑体紧密结合。采用预封孔法制备的氧化铝膜的渗透通量相比于其他方法制备的陶瓷过滤膜通量提高了一到两倍。In this study, the interfacial crosslinking reaction between PVA and boric acid was used to form a relatively dense hydrogel layer on the surface of the support, and the pores of the support were sealed in advance. Then, the ceramic filter membrane precursor was formed on the surface of the “PVA-boric acid” crosslinking layer through one-step film formation. Thus, a sandwich structure composed of ceramic filter membrane precursor, “PVA-boric acid” cross-linked barrier layer and support body is designed. The thickness of the “PVA-boric acid” cross-linked layer is about 10 μm, which can make the top layer of the ceramic filter membrane closely bond with the support. Compared with the ceramic membrane prepared by other methods, the permeability flux of the alumina membrane prepared by the pre-sealing method is increased by one to two times.

关 键 词：陶瓷 微滤膜 制备 渗透通量 孔径 

分 类 号：TQ174.75[化学工程—陶瓷工业]