国家/地区 中国（5）
IPC部 C（5） F（5） B（3）
IPC大类 C08（5）
IPC小类 C09D（5）
IPC C09D005/08（5）
发明人
公开年 2022（2）
申请年 2021（2）  2022（2） 
专利权人

Preparing internal spiral polyvinyl chloride drainage pipe, comprises e.g. bending and spiraling steel wire, extruding, injecting into brushing mechanism, carrying out spiral groove processing, forming inner spiral groove, spraying, extruding, painting and performing preliminary drying.

LIU Z

Preparing pipe material comprises cleaning mineral-inorganic composite materials, grinding, melting, casting and forming in combination with pipe mold by means of centrifugal casting, demolding and cooling, heating and densifying, and coating anti-corrosion coating.

WANG P

Preparing graphene oxide-epoxy ceramic composite material that is used for preventing corrosion of inner wall of pipeline, involves modifying graphene oxide by nano-zinc oxide, so that carboxyl group on surface of graphene oxide is bonded to hydroxyl group.

SUN T, YAN W, YAN Y

Corrosion resistant polyethylene water supply pipe material comprises base layer and anticorrosive graphene coating comprising polyethylene, color master batch, epoxy resin and dispersant.

LIU J, WANG J, LI H

High-temperature-resistant graphite alkenyl mono-component epoxy anti-corrosive coating used for high temperature pipeline includes epoxy resin, toughening agent, graphene, silane coupling agent, dispersant, pigment and dicyandiamide.

MA X