国家/地区 中国（3）
IPC部 C（3）
IPC大类 C01（3）
IPC小类 C01B（3）
IPC
发明人 DUAN P（3）
公开年 2021（3）
申请年
专利权人

Producing concrete water reducing agent comprises e.g. adding graphene oxide solution and acrylamide polymer into methyl alkenyl polyoxyethylene ether and sodium styrene sulfonate solution, stirring, adjusting pH, cooling, adding calcium lignosulfonate and rutin, and mixing.

ZHANG Z, DUAN P

Preparing graphene doped with nitrogen and sulfur, comprises e.g. mixing graphene, nitrogen-sulfur doping source and agate ball, ball milling, washing, filtering, and freeze-drying to obtain nitrogen and sulfur double-doped graphene.

DUAN P, SHAN Y, YIN L, ZHANG X

Preparing porous graphene dispersion by electrochemical method, comprises e.g. preparing electrolyte, electrolytically peeling graphite material in electrolyte, and ultrasonically processing obtained graphite intercalation compound.

DING G, DUAN P, HE P, XIE X