公开(公告)号：US20200062657A1

公开(公告)日：2020-02-27

申请号：US16466066

申请日：2017-05-10

Applicant: Nanjing University of Technology

Inventor： Wanqin JIN ,  Jiawei ZHU ,  Zhengkun LIU

IPC: C04B35/622 ,  C04B35/26 ,  C04B26/28 ,  C04B26/10

Abstract: The invention relates to a method for preparing a composite metal oxide hollow fibre. A certain stoichiometry of composite metal oxide raw material and a polymer binding agent are added to an organic solvent, and mixed mechanically to obtain an evenly dispersed spinning solution having a suitable viscosity. After defoaming treatment, the spinning solution is extruded through a spinneret and, after undergoing a certain dry spinning process, enters an external coagulation bath; during this period, a phase inversion process occurs and composite metal oxide hollow fibre blanks are formed. The blanks are immersed in the external coagulation bath and the organic solvent is displaced; after natural drying, the blanks undergo a heat treatment process; during this period, polymer burn off, in situ reaction, and in situ sintering processes occur to obtain the composite metal oxide hollow fibre.

公开(公告)号：US20170266623A1

公开(公告)日：2017-09-21

申请号：US15307000

申请日：2015-08-27

Applicant: NANJING UNIVERSITY OF TECHNOLOGY

Inventor： Wanqin JIN ,  Kang HUANG ,  Gongping LIU

IPC: B01D67/00 ,  B01D71/02 ,  B01D69/10 ,  B01D69/08

CPC classification number: B01D67/0041 ,  B01D69/02 ,  B01D69/06 ,  B01D69/08 ,  B01D69/10 ,  B01D71/021

Abstract: A method for preparing a graphene composite membrane on the surface of a tubular support. In the method, a tubular ceramic membrane is used as the support, a layer of graphene material is uniformly prepared on the surface of the support by vacuum suction, and the defect-free tubular graphene composite membrane is obtained by the drying process.