国家/地区 中国（13）
IPC部 B（13）
IPC大类 B01（13） C02（7）
IPC小类 B01D（13）
IPC B01D067/00（13）
发明人 LI W（2） LIU H（2） WANG M（2）
公开年 2022（12）
申请年 2022（13）
专利权人

Preparing tubular membrane used in water treatment, involves mixing polymer material with additives and solvents, defoaming to obtain filter separation layer casting solution, spinning filter separation film liquid on core rod by electrostatic spinning, melting thermoplastic resin, thermally shaping.

ZHANG H, XU X, ZHAN Y

Preparing dual-drive type super-hydrophilic photothermal film comprises performing primary heat pressing super-hydrophilic photo-thermal conversion nanofiber film to improve integrity, folding, and performing secondary heat-pressing and shaping.

HONG Y, SUN W, ZHANG G, CAO J, ZHU T, LIU D

Hydrophobic and lipophilic film with photothermal and electrothermal effect used in oil-water separation, comprises middle layer film, upper layer film and lower layer film arranged on both sides of middle layer film, where intermediate film is polyvinylidene fluoride film.

CHEN Z, WU Y, XIE H, SU X, WU W, ZHOU J, LI K

Continuous preparation of polyvinylidene fluoride hollow fiber film for e.g. textile, involves soaking hollow fiber membrane obtained by using polyvinylidene fluoride, rigid polymer, nanomaterial as inorganic additive and water-soluble polyethylene oxide, in water, shaking and washing.

XUE H, WANG C, WANG Q, CHEN K, WANG M, XIAO C, JI D

Preparing nano-filtration purifying membrane for emergency drinking, comprises mixing polyvinylidene fluoride, dopamine hydrochloride, polyethyleneimine, quaternized polyethyleneimined and dimethyl acetamide and reacting.

ZHAO L, JIANG W, ZHANG S, KANG P, GU L, XU M

Hydrophobic polyvinylidene fluoride-graphene oxide nano fiber film used for membrane distillation process, comprises polyethylidene diene fluoride nano fiber film obtained by electrostatic spinning method, and reducing graphene oxide nano particles.

JIN W, JI W, GAO K, LIU G

Preparation of film useful for photothermal film distillation device, involves e.g. uniformly dripping Tris solution containing dopamine hydrochloride on hydrophobic polyvinylidene fluoride film, placing in vacuum suction filter bottle, adding graphene oxide-thiourea solution, and suction-filtering.

WANG Y, LIU H, HU Z, LI W

Preparing graphene oxide-titanium dioxide/poly(vinylidene fluoride) composite ultrafiltration membrane comprises e.g. preparing different graphene oxide-titanium dioxide nanocomposites, dispersing it in dimethylacetamide, stirring with poly(vinylidene fluoride) and polyethylene glycol, and casting.

WANG M, YANG B, LIU H, XU H, YUE Q, JI X

Preparation of modified polyvinylidene fluoride film for treating organophosphorus pesticide wastewater, involves dissolving pure polyvinylidene fluoride material in dimethylformamide, and coating surface of braided tube with obtained polyvinylidene fluoride solution, forming film and drying.

LI J, LI W, JI H

Preparing pollution-resistant micro-filtration membrane useful in water and oil-permeable microfiltration process, comprises e.g. reacting fluorine-based, silicon-based or fluorosilicon-modified polyacrylate random copolymers, tetrahydrofuran solvent and immersing microfiltration membrane in ethanol.

HOU J, XUE L, YUE Z, ZHOU L, YAO Z, CHEN P, GU K, LEI Y, XING J, XIE S, PENG Y, CHEN X