公开(公告)号：US11806674B1

公开(公告)日：2023-11-07

申请号：US18124024

申请日：2023-03-21

Applicant: Harbin Engineering University

Inventor： Jun Wang ,  Jiaqi Yu ,  Qi Liu ,  Hongsen Zhang ,  Jingyuan Liu ,  Rongrong Chen ,  Jing Yu ,  Jiahui Zhu ,  Rumin Li ,  Peili Liu

IPC: B01D67/00 ,  B01D69/02 ,  B01D71/42 ,  C22B60/02

CPC classification number: B01D67/0079 ,  B01D69/02 ,  B01D71/42 ,  B01D2323/02 ,  B01D2325/36 ,  C22B60/0265

Abstract: A high flux antibacterial polyacrylonitrile-based uranium-extraction-from-seawater-seawater desalination cogeneration membrane and a preparation method thereof are disclosed. To satisfy demand of uranium-extraction-from-seawater-seawater desalination cogeneration application, polyacrylonitrile, chitosan and amidoxime modified polyacrylonitrile are taken as raw materials and a proportion of raw materials of a casting membrane are optimized in a membrane forming process. The conversion rate of polyacrylonitrile is adjusted so that formation of an amidoxime modified polyacrylonitrile powder in a casting membrane liquid mixing system is regulated and controlled, thereby significantly improving the mechanical properties, the flux, the hydrophilicity, the antibacterial property and the uranium adsorptive property. A compound cogeneration membrane composed of a top membrane, a clipping membrane and a bottom membrane are also prepared according to actual function characteristics of seawater and the membrane material, and the uranium-extraction-from-seawater-seawater desalination performance of the membrane material is integrally improved.

公开(公告)号：US12227671B2

公开(公告)日：2025-02-18

申请号：US17951125

申请日：2022-09-23

Applicant: Harbin Engineering University

Inventor： Jun Wang ,  Jiawei Tang ,  Rongrong Chen ,  Qi Liu ,  Jingyuan Liu ,  Jing Yu ,  Jiahui Zhu ,  Gaohui Sun ,  Peili Liu

IPC: C09D175/04 ,  C09D5/16

Abstract: A polypyrrole-graphene/polyurethane antifouling coating as well as a preparation method and an application thereof are provided. The polypyrrole-graphene/polyurethane antifouling coating includes component A and component B, wherein the component A mainly includes the following raw materials in parts by weight: 500 parts of group-hydrolyzable polyurethane prepolymer, 25-50 parts of bentonite, 25-50 parts of titanium dioxide, 60-120 parts of zinc oxide, 15-30 parts of talcum powder, and 15-30 parts of polypyrrole-graphene nanofiller; and the component B mainly includes the following raw materials in parts by weight: 5-7 parts of leveling agent, 5-7 parts of defoamer, 6-15 parts of chain extender, 10-25 parts of silane coupling agent, and 1-2 parts of catalyst. The two-component polyurethane coating of the present invention has relatively good adhesion, collision resistance and cracking resistance, and the antifouling property and the antifouling durability can be improved.

公开(公告)号：US11795330B1

公开(公告)日：2023-10-24

申请号：US18127678

申请日：2023-03-29

Applicant: Harbin Engineering University

Inventor： Qi Liu ,  Yue Sun ,  Peili Liu ,  Rongrong Chen ,  Jun Wang ,  Gaohui Sun

IPC: C09D5/08 ,  C09D175/04

CPC classification number: C09D5/084 ,  C09D175/04

Abstract: A polypyrrole-coated graphene corrosion inhibitor container and its preparation method and a composite coating and its application are provided. The polypyrrole encapsulated graphene corrosion inhibitor container includes graphene oxide and a polyvinylo layer encapsulated on the surface of the graphene oxide. The invention is based on a polymerization reaction by mixing a polypyrrole acid solution, a graphene oxide dispersion, and an initiator to obtain a polypyrrole encapsulated graphene corrosion inhibitor container. The polypyrrole encapsulated graphene corrosion inhibitor container regulates the release rate of the corrosion inhibitor by wrapping the polypyrrole around the graphene oxide so that it is released rapidly in alkaline solutions and at a slower rate in neutral media. The results of the practical example show that the polypyrrole encapsulated graphene corrosion inhibitor container can regulate the release rate of the corrosion inhibitor and has excellent corrosion protection properties and corrosion protection durability.