Ultrafiltration ceramic flat sheet membrane and preparation method thereof

• Main Authors: XUE YOUXIANG, MA TIANSHUANG, LI XIAOYONG, SHEN PENG, CHEN DAMING, SONG TAO, ZHAO SHIKAI, XU CHUANWEI, XU DANDAN
• Format: Patent
• Language: Chinese; English
• Published: 06.04.2021
• Subjects: PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING

The invention discloses an ultrafiltration ceramic flat sheet membrane and a preparation method thereof. The method comprises the following steps that a microfiltration ceramic flat sheet membrane serves as a base body, aluminum sol is adsorbed into micropores of a microfiltration ceramic flat sheet membrane separation membrane layer in an impregnation mode, and the membrane is formed through drying and sintering. The method can overcome the defects and deficiencies of the existing method for preparing the ultrafiltration ceramic flat sheet membrane, simplifies the process, reduces the preparation difficulty, prepares the complete ultrafiltration membrane with the pore diameter of less than 50nm, and is suitable for large-scale industrial production. 本发明公开了一种超滤陶瓷平板膜及制备方法，所述方法的实现包括过程如下：以微滤陶瓷平板膜为基体，通过浸渍的方式，将铝溶胶吸附于微滤陶瓷平板膜分离膜层的微孔中，经干燥，烧结成膜。本发明方法能克服现行制备超滤陶瓷平板膜方法的缺点和不足，简化工艺，降低制备难度，制备出孔径小于50nm的完整超滤膜，且适用于大规模工业化生产。