国家/地区 中国（14）
IPC部 B（14） C（7）
IPC大类 B01（14） C02（7）
IPC小类 B01D（14）
IPC B01D061/02（14）
发明人 GAO T（2）
公开年 2020（7） 2021（6）
申请年 2020（14）
专利权人 PALL HEBEI E.（2）

Graphene oxide titanium dioxide-dopamine polyetherimide nanofiltration membrane comprises organic ultrafiltration membrane support and functional layer prepared by ultrasonically mixing graphene oxide solution and titanium dioxide-dopamine aqueous solution, filtering to form membrane, and filtering.

LAN W, FANG F, HONG Y, CHEN Y

Preparing layer-by-layer covalent cross-linked graphene oxide film useful in treating water, comprises e.g. assembling polyacrylonitrile film and graphene oxide layer-by-layer using symmetrical diamine substance as cross-linking agent.

ZHAO X, LI H, QI H, TIAN Y

Reverse osmosis membrane comprises polyethylene microporous membrane, polysulfone layer coated on polyethylene microporous membrane and polyamide layer coated on polysulfone layer.

UNANNOUNCED I

Preparing graphene oxide composite nanofiltration membrane by spraying method involves preparing oxidized graphene by using nano-graphite as raw material, using modified Hummers method to prepare graphene oxide.

WEI Y, WANG J, CHEN J, FENG H

New zwitterionic functionalized graphene used for preparing nanofiltration membrane used in chemical industry and domestic sewage desalination.

CUI S, ZHANG X, BU J

Flexible anti-fouling composite filter membrane comprises mixture of graphene oxide modified basalt fiber, plant nano cellulose, lignin adhesive and polyaspartic acid, which forms a layer of flexible anti-fouling composite fiber film.

LI S, LI L, GAO F

Preparation of continuous spinning nanofiltration base film involves mixing hydrophilic inorganic nanoparticles and film-forming polymer, and preparing hollow fiber nanofiltration film by granulating and filling spinneret with inert gas.

HUANG H, CHEN C, LIN C, GAO S

Graphene oxide complex nanofiltration membrane modified by borate intercalation prepared by modifying graphene oxide using borate as intercalation molecule and connecting with hydrolyzed polypropylene cyanide membrane with polyethyleneimine.

YAN X, CHENG S, BAO R, WANG G, LI J

Self-supporting reduced graphene oxide nanofiltration membrane preparation uniformly coating polymer solution on flat plate, and then drying to obtain polymer substrate.

ZHU X, ZHENG J

Preparing solvent-resistance charged composite nanofiltration membrane, comprises e.g. hydrolyzing poly(p-phenylene terephthalamide) by amide, anchoring 2-bromo-2-methylpropionyl bromide on the surface of graphene oxide, and post-processing.

LIAO J, RUAN W, DU B, WEI H