• 专利标题:   Preparing graphene heat-conducting silicone grease comprises e.g. adding graphite into ultrapure water, stirring, using mechanical stripping process to obtain graphene slurry, filtering to get filter cake, adding transfer solvent, stirring, and utilizing transfer solvent to wash graphene slurry.
  • 专利号:   CN116218224-A
  • 发明人:   MA Y, LI Y, FENG J, LI X, LIU H
  • 专利权人:   CHENGDU FANGDA CARBON RES INST CO LTD, CHENGDU FANGDA TANTAN COMPOSITE MATERIAL
  • 国际专利分类:   C01B032/19, C01B032/194, C08K003/04, C08K003/22, C08L083/04, C08L083/08, C09K005/14
  • 专利详细信息:   CN116218224-A 06 Jun 2023 C08L-083/04 202355 Chinese
  • 申请详细信息:   CN116218224-A CN11695055 28 Dec 2022
  • 优先权号:   CN11695055

▎ 摘  要

NOVELTY - Preparing graphene heat-conducting silicone grease comprises (1) adding graphite into ultrapure water, stirring evenly, and using mechanical stripping process to obtain graphene slurry; (2) filtering the obtained graphene slurry to get the filter cake, adding transfer solvent and stirring, utilizing transfer solvent to wash graphene slurry, filtering to obtain high-concentration graphene transfer liquid; (3) adding an oily dispersant to high-concentration graphene transfer liquid, stirring evenly, and ultrasonically homogenizing to obtain a graphene suspension; (4) adding the obtained oily graphene suspension and filler to silicone oil, placing it in vacuum stirred tank for 2-24 hours to continuously stir to obtain graphene thermally conductive silicone grease precursor; and (5) placing the graphene thermally conductive silicone grease precursor in constant temperature vacuum oven and heating for 1-10 hours to obtain graphene thermally conductive silicone grease. USE - The method is useful for preparing graphene heat-conducting silicone grease. ADVANTAGE - The method: keeps the original sheet structure of graphene, graphene in oil-based solvents will be more easily uniformly dispersed in silicone oil to form silicone grease.