公开(公告)号：US20240309225A1

公开(公告)日：2024-09-19

申请号：US18027853

申请日：2022-09-06

Applicant: HARBIN ENGINEERING UNIVERSITY

Inventor： Rongrong CHEN ,  Shurui ZHANG ,  Jun WANG ,  Jiahui ZHU ,  Jingyuan LIU ,  Jing YU ,  Qi LIU ,  Haotian WANG ,  Peili LIU

IPC: C09D5/16 ,  C08G18/10 ,  C08G18/60 ,  C09D175/08

CPC classification number: C09D5/1675 ,  C08G18/10 ,  C08G18/603 ,  C09D175/08

Abstract: The present disclosure provides an antifouling coating and a use method and use thereof. In the antifouling coating of the present disclosure, polyaspartic acid ester is an isocyanate curing agent containing a secondary amine structure. An ester group and aliphatic properties in the polyaspartic acid ester can increase wear resistance of the coating. The polyaspartic acid ester is combined with a polyisocyanate-containing prepolymer in a component A to endow the antifouling coating with desirable toughness and elasticity, such that the antifouling coating has excellent impact and abrasion resistance. In the component A, a polydimethylsiloxane structure is introduced into the hydroxypropyl silicone oil-based isocyanate prepolymer. The polydimethylsiloxane structure can generate microphase separation with a polyurea hard segment and migrate to a surface of the coating, thereby reducing surface energy of the coating to reduce an adhesion between fouling organisms and an interface.

公开(公告)号：US20240132731A1

公开(公告)日：2024-04-25

申请号：US18475634

申请日：2023-09-27

Applicant: HARBIN ENGINEERING UNIVERSITY

Inventor： Jun WANG ,  Zhixin WANG ,  Dalei SONG ,  Rongrong CHEN ,  Qi LIU ,  Jingyuan LIU ,  Jing YU ,  Jiahui ZHU ,  Gaohui SUN

IPC: C09D5/16 ,  C09D183/08

CPC classification number: C09D5/1637 ,  C09D5/1681 ,  C09D183/08

Abstract: Provided are a surface zwitterionized silicone antifouling coating and a preparation method thereof. In the disclosure, hydroxyl-terminated polydimethylsiloxane and N-aminoethyl-3-aminopropyl methyl dimethoxysilane are used as raw materials, and tetramethylammonium hydroxide pentahydrate is used as a catalyst, thereby preparing a series of polydimethylsiloxane resins containing amino side chains in different proportions; then side chain amino modified polydimethylsiloxane is crosslinked and cured by using 3-glycidyloxypropyltrimethoxysilane as a curing agent; after that, the cured silicone coating is soaked in a solution of 1,3-propane sultone in acetone for ionization.

公开(公告)号：US20230338901A1

公开(公告)日：2023-10-26

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 ,  C02F1/44 ,  C02F1/50

CPC classification number: B01D67/0079 ,  B01D69/02 ,  B01D71/42 ,  C02F1/44 ,  C02F1/50 ,  B01D2323/02 ,  B01D2325/36 ,  C02F2103/08

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：US20230126942A1

公开(公告)日：2023-04-27

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: C09D5/16 ,  C09D175/04

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.