国家/地区 中国（3）
IPC部 C（3）
IPC大类 C09（3） F16（2）
IPC小类 C09D（3）
IPC C09D005/08（2） C09D007/61（2）
发明人 LIU Z（3）
公开年 2023（2）
申请年 2021（2） 
专利权人

Graphene coating used in preparation of graphene positive temperature coefficient (PTC) heat sink in heater, comprises aqueous silicone resin, graphene material, nano-inorganic ceramic material and alcohol solvent.

LI M, LIU Z, LI S, CAI Z

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

Wear-resistant and corrosion-resistant pipe fitting comprises ultra-high molecular weight polyethylene, leveling agent, silicone oil, nano particles.

WANG W, LIU Z, SUN L