国家/地区 中国（2）
IPC部 B（2）
IPC大类 B29（2） C08（2）
IPC小类 B29B（2）
IPC B29B007/74（2）
发明人
公开年 2022（2）
申请年 2022（2）
专利权人

High temperature resistant packer sealing rubber cylinder is useful in oil field, comprises e.g. 100H type tetrapropylene fluorine rubber, 100S type tetrapropylene fluoride rubber, N990 carbon black, N774 carbon black, calcium stearate, and triallylisocyanurate.

YANG Z, LI Y, LUO B, FU W, LV Z, CHEN K, LONG X, CAO X, LI H, REN J

Continuously rolling and molding polyvinyl chloride/graphene composite film useful for producing high molecular material film and sheet, comprises e.g. passing mixture into internal mixer through cold mixer under pressure of the floating weight, and plasticizing by two counter-rotating rotors.

GUO Y, ZHAO K, CHEN H, WANG A, ZHANG D, LI W, WU L, HU W