公开(公告)号：US11850555B2

公开(公告)日：2023-12-26

申请号：US17218181

申请日：2021-03-31

Applicant: NANJING TECH UNIVERSITY

Inventor： Shipeng Sun ,  Zhenyuan Wang ,  Zhengjun Fu ,  Mengmeng Tang ,  Dandan Shao ,  Weihong Xing

IPC: B01D67/00 ,  B01D69/06 ,  B01D71/56 ,  B01D71/64 ,  B01D71/68 ,  B01D61/02 ,  B01D61/14 ,  B01D69/08 ,  B01D69/12 ,  B01D71/78 ,  C02F1/44 ,  D01D5/24 ,  D01D5/34 ,  D01F1/08 ,  B01D71/06 ,  B01D53/22 ,  B01D61/00 ,  B01D61/36 ,  D01D5/06

CPC classification number: B01D67/0016 ,  B01D61/025 ,  B01D61/027 ,  B01D61/147 ,  B01D67/0002 ,  B01D67/0013 ,  B01D69/06 ,  B01D69/08 ,  B01D69/088 ,  B01D69/12 ,  B01D69/125 ,  B01D71/06 ,  B01D71/56 ,  B01D71/68 ,  B01D71/78 ,  C02F1/448 ,  D01D5/24 ,  D01D5/34 ,  D01F1/08 ,  B01D53/228 ,  B01D61/002 ,  B01D61/02 ,  B01D61/14 ,  B01D61/145 ,  B01D61/362 ,  B01D2323/12 ,  B01D2323/38 ,  C02F1/441 ,  C02F1/442 ,  C02F1/444 ,  C02F1/445 ,  D01D5/06

Abstract: A dual-layer membrane and a method for preparing thereof. By adding a modifying monomer containing an active group and a characteristic group to a dope solution or spinning solution during the preparation of the dual-layer membrane, the grafting reaction occurs between the active group of the monomer and the polymer in the dope solution or spinning solution, and the intermolecular interaction with other polymers is enhanced by the characteristic group of the monomer, to improve the miscibility between the polymers. The method is suitable for preparing both a dual-layer flat sheet membrane and a dual-layer hollow fiber membrane, and can realize the preparation of a dual-layer membrane with an interpenetrated structure at the interface under mild preparation conditions.

公开(公告)号：US10287214B2

公开(公告)日：2019-05-14

申请号：US15509825

申请日：2014-09-09

Applicant: NANJING TECH UNIVERSITY

Inventor： Weihong Xing ,  Zhaoxiang Zhong ,  Feng Han ,  Feng Zhang ,  Nanping Xu

IPC: C04B35/565 ,  C04B35/634 ,  C04B38/06 ,  C04B38/00 ,  C04B35/80 ,  C04B35/63 ,  C04B35/632 ,  C04B35/64 ,  C04B35/626

Abstract: A preparation method of a SiC porous ceramic material and porous ceramic material manufactured by using the method, comprising: mixing a SiC aggregate, a sintering aid (zirconium oxide), a pore-forming agent (activated carbon) and a polymer binder with a reinforcing agent (SiC whiskers) according to a certain proportion, and obtaining a porous ceramic material via forming, drying and high-temperature sintering. The porous ceramic material has a high strength, a high porosity, a good thermal shock resistance and a low sintering temperature, and can server as a filter material of high-temperature flue gas and a carrier material in vehicle exhaust purification.

公开(公告)号：US20170283329A1

公开(公告)日：2017-10-05

申请号：US15509825

申请日：2014-09-09

Applicant: NANJING TECH UNIVERSITY

Inventor： Weihong Xing ,  Zhaoxiang Zhong ,  Feng HAN ,  Feng ZHANG ,  Nanping XU

IPC: C04B35/80 ,  C04B35/634 ,  C04B38/00 ,  C04B35/64 ,  C04B38/06 ,  C04B35/63 ,  C04B35/632

CPC classification number: C04B35/806 ,  C04B35/565 ,  C04B35/62615 ,  C04B35/62685 ,  C04B35/6303 ,  C04B35/632 ,  C04B35/63416 ,  C04B35/64 ,  C04B38/0003 ,  C04B38/0006 ,  C04B38/067 ,  C04B38/068 ,  C04B2235/3244 ,  C04B2235/3826 ,  C04B2235/422 ,  C04B2235/5244 ,  C04B2235/5276 ,  C04B2235/5427 ,  C04B2235/5436 ,  C04B2235/6021 ,  C04B2235/6562

Abstract: A preparation method of a SiC porous ceramic material and porous ceramic material manufactured by using the method, comprising: mixing a SiC aggregate, a sintering aid (zirconium oxide), a pore-forming agent (activated carbon) and a polymer binder with a reinforcing agent (SiC whiskers) according to a certain proportion, and obtaining a porous ceramic material via forming, drying and high-temperature sintering. The porous ceramic material has a high strength, a high porosity, a good thermal shock resistance and a low sintering temperature, and can server as a filter material of high-temperature flue gas and a carrier material in vehicle exhaust purification.

公开(公告)号：US10927229B2

公开(公告)日：2021-02-23

申请号：US16099182

申请日：2017-06-30

Applicant: NANJING TECH UNIVERSITY

Inventor： Yong Wang ,  Weihong Xing ,  Nanping Xu

IPC: C08J9/28 ,  C08J9/00 ,  C08L81/06 ,  C08G75/20 ,  C08G75/23 ,  C08L87/00

Abstract: The present invention relates to a method for preparing nanoporous polysulfone-based polymers, including: a copolymer of a polysulfone polymer and a polar polymer is immersed into a compound swelling agent, and maintained for at least 1 minute above room temperature; the compound swelling agent is a “solvent pair” composed of the mixture of solvent A and solvent B; the solvent A has high affinity with the polysulfone polymer; and the solvent B has high affinity with the polar polymer; the treated copolymer is taken out from the compound swelling agent and then dried to remove the solvent to obtain the nanoporous polysulfone-based polymers.