Anti-pollution nano-composite hollow fiber membrane and preparation method thereof

• Main Authors: BAO SHIBIAO, TANG YUPAN, SONG YANWEI
• Format: Patent
• Language: Chinese; English
• Published: 27.08.2021
• Subjects: PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING

The invention belongs to the technical field of ultrafiltration membranes, and particularly relates to a preparation method of an anti-pollution nano-composite hollow fiber membrane. The preparation method comprises the following steps: S1, preparation of a gel solution: S11, adding N-methyl-2-pyrrolidone into graphite oxide, and carrying out ultrasonic treatment for 2 hours to form a stable graphite oxide suspension; S12, dissolving a certain amount of 1-methylnicotinamide chloride in N-methyl-2-pyrrolidone, and then adding a part of a sulfonated polyethylene sulfone polymer to form a dilute polymer solution; S13, stirring and mixing the graphite oxide suspension obtained in the step A1 and the dilute polymer solution obtained in the step A2 so as to allow graphite oxide nanosheets to be uniformly dispersed in the dilute polymer solution, and then adding the residual sulfonated polyphenyl sulfone polymer; and S14, after the 1-methylnicotinamide chloride, the graphite oxide and the sulfonated polyphenylsulfon