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：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：US20230312939A1

公开(公告)日：2023-10-05

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.

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.