Method and device for preparing graphene-based polyethylene glycol phase change material

US11339316B1 · kind B1 · utility

Assignee

• GUANGDONG UNIVERSITY OF TECHNOLOGY · CN

Inventors

• Yun Chen · Tangxia, CN
• Xiangyuan Luo · 流花街道, CN
• Shuquan Ding · Tangxia, CN
• Canguang Lin · 流花街道, CN
• Zengguang Gao · 流花街道, CN
• Xin Chen · Tangxia, CN
• Xun Chen · Tangxia, CN
• Jian Gao · Singapore, SG

Key dates

• Filing date: Dec 22, 2021
• Grant date: May 24, 2022
• Expiry date: Dec 22, 2041

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2375/04
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

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.