• 专利标题:   Preparing graphene-based polyethylene glycol phase change material comprises immersing polyurethane sponge in dispersion of carbon black in deionized water, performing first electrical discharge machining, mixing, acid washing, and drying.
  • 专利号:   CN112680195-A, CN112680195-B, US11339316-B1
  • 发明人:   CHEN Y, LUO X, DING S, LIN C, GAO Z, CHEN X, GAO J
  • 专利权人:   UNIV GUANGDONG TECHNOLOGY, UNIV GUANGDONG TECHNOLOGY
  • 国际专利分类:   C01B032/184, C08J007/12, C08K003/04, C08K003/22, C08L071/02, C08L075/04, C09K005/06, C08J009/40, C08K009/12
  • 专利详细信息:   CN112680195-A 20 Apr 2021 C09K-005/06 202143 Pages: 18 Chinese
  • 申请详细信息:   CN112680195-A CN11556014 24 Dec 2020
  • 优先权号:   CN11556014

▎ 摘  要

NOVELTY - Preparing graphene-based polyethylene glycol phase change material comprises (i) dispersing carbon black in deionized water, immersing polyurethane sponge in a dispersion of carbon black in deionized water, taking out the polyurethane sponge and drying to obtain a combination of polyurethane sponge and carbon black; (ii) performing first electrical discharge machining on the combination of polyurethane sponge and carbon black to obtain the first intermediate product; (iii) ultrasonically mixing first intermediate product, polyethylene glycol and magnesium oxide to obtain second intermediate product; (iv) performing second electrical discharge machining on the second intermediate product to obtain the third intermediate product; (v) performing acid washing to third intermediate product to obtain the fourth intermediate product, and drying the fourth intermediate product; and (vi) injecting polyethylene glycol into fourth intermediate product, stirring in mold and drying. USE - The method is useful for preparing graphene-based polyethylene glycol phase change material. ADVANTAGE - The method meets the requirements of high efficiency, low cost, high stability, simple process, and no secondary pollution. The device has a simple structure and can realize the rapid and large-area preparation of the graphene-based polyethylene glycol phase change material. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for: a device for preparing the graphene-based polyethylene glycol phase change material.