公开(公告)号：US20230374242A1

公开(公告)日：2023-11-23

申请号：US18042380

申请日：2022-03-23

Applicant: EAST CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Ling ZHAO ,  Yichong CHEN ,  Tao LIU ,  Shun YAO ,  Yijie LING ,  Zhimei XU ,  Dongdong HU

IPC: C08J9/12

CPC classification number: C08J9/122 ,  C08J2203/06 ,  C08J2323/16 ,  C08J2323/20 ,  C08J2201/02

Abstract: Provided are a dielectric material and a method for manufacturing the same. The dielectric material includes: subjecting a foamed sphere obtained by a primary foaming to a second foaming in a second moulding chamber filled with CO2 at a second temperature in the range of 20° C. below Tm to 5° C. below Tm and under a second pressure of 15-20 MPa for 30-3600 min to obtain the dielectric material, wherein the primary foaming comprises specific steps of: foaming a foaming material sphere with a diameter of 20-800 mm in a first moulding chamber filled with CO2 at a first temperature in the range of 80° C. below Tm to 20° C. below Tm and under a first pressure of 15-20 MPa to obtain the foamed sphere. Further provided is a dielectric material manufactured by the method above.