国家/地区 中国（3）
IPC部 H（2）
IPC大类 H01（2）
IPC小类 H01L（2）
IPC H01L041/18（2） H01L041/37（2）
发明人 REN D（3）
公开年 2022（2）
申请年 2021（3）
专利权人 ZHEJIANG LAB（2）

Preparing nanocomposite powder of graphene-calcium carbonate, comprises digesting quicklime, filtering and removing residue, introducing carbon dioxide mixed gas, controlling reaction temperature, adding crystal form control agent, separating, adding stearic acid rare earth and reacting.

REN D, WANG H, WANG S, WANG X, LI L, ZHENG Z, QI X, CAI X

Composite piezoelectric material for use in self-focusing type composite film of ultrasonic transducer, has organic piezoelectric phase, inorganic piezoelectric phase particle and doped phase that are sequentially arranged.

LI C, CHEN R, YIN Y, SHI J, REN D

Flexible piezoelectric composite material for flexible multi-layer actuator, has polymer piezoelectric material, non-polymer type piezoelectric material and graphene oxide composite, where non-polymer piezoelectric material is piezoelectric ceramic.

REN D, SHI J, YIN Y, CHEN R, LI C