公开(公告)号：US11339316B1

公开(公告)日：2022-05-24

申请号：US17559112

申请日：2021-12-22

Applicant: GUANGDONG UNIVERSITY OF TECHNOLOGY

Inventor： Yun Chen ,  Xiangyuan Luo ,  Shuquan Ding ,  Canguang Lin ,  Zengguang Gao ,  Xin Chen ,  Xun Chen ,  Jian Gao

IPC: C09K5/06 ,  C08K3/04 ,  C08K9/12 ,  C08J9/40

Abstract: A method and device for preparing a graphene-based polyethylene glycol phase change material. The method includes: (S1) dispersing carbon black in deionized water to form a carbon black dispersion; immersing polyurethane sponge in the carbon black dispersion; and taking out polyurethane sponge followed by drying to obtain a polyurethane sponge-carbon black combination; (S2) subjecting the polyurethane sponge-carbon black combination to a first electrical discharge machining to obtain a first intermediate; (S3) ultrasonically mixing the first intermediate, polyethylene glycol, and MgO to obtain a second intermediate; (S4) subjecting the second intermediate to a second electrical discharge machining to obtain a third intermediate; (S5) subjecting the third intermediate to acid washing to obtain a fourth intermediate, and drying the fourth intermediate; (S6) injecting polyethylene glycol into the fourth intermediate followed by stirring in a mold and drying to prepare the graphene-based polyethylene glycol phase change material.