• 专利标题:   Preparing graphene material comprises e.g. coating graphene oxide slurry on surface of substrate, setting first layer of template, and drying graphene oxide slurry between substrate and first layer template to form first layer of graphene oxide coating.
  • 专利号:   CN115159511-A, CN115159511-B
  • 发明人:   ZHOU S, HU J, YANG S, GE X
  • 专利权人:   HANGZHOU FUXI TECHNOLOGY CO LTD
  • 国际专利分类:   C01B032/184, C01B032/194, C09K005/14
  • 专利详细信息:   CN115159511-A 11 Oct 2022 C01B-032/184 202200 Chinese
  • 申请详细信息:   CN115159511-A CN10938687 05 Aug 2022
  • 优先权号:   CN10938687

▎ 摘  要

NOVELTY - Preparing graphene material comprises coating graphene oxide slurry on surface of substrate, and setting the first layer of template after coating; drying graphene oxide slurry between substrate and first layer template to form the first layer of graphene oxide coating; coating graphene oxide slurry on the first layer template, and setting the second layer template after coating; drying the graphene oxide slurry between the first layer template and the second layer template to form a second layer of graphene oxide coating; repeating the steps of coating the graphene oxide slurry, setting the template and drying to a predetermined thickness to obtain the graphene oxide blank; carrying out heat treatment to graphene oxide blank, obtaining a graphene material composed of multiple graphene layers, with layered gaps between the upper and lower adjacent graphene layers and plurality of graphene columns distributed between the layered gaps; where, the template is foam material. USE - The graphene material useful for preparing graphene heat-conducting pad. ADVANTAGE - The method: is simple. DETAILED DESCRIPTION - Preparing graphene material comprises coating graphene oxide slurry on surface of substrate, and setting the first layer of template after coating; drying graphene oxide slurry between substrate and first layer template to form the first layer of graphene oxide coating; coating graphene oxide slurry on the first layer template, and setting the second layer template after coating; drying the graphene oxide slurry between the first layer template and the second layer template to form a second layer of graphene oxide coating; repeating the steps of coating the graphene oxide slurry, setting the template and drying to a predetermined thickness to obtain the graphene oxide blank; carrying out heat treatment to graphene oxide blank, obtaining a graphene material composed of multiple graphene layers, with layered gaps between the upper and lower adjacent graphene layers and plurality of graphene columns distributed between the layered gaps; where, the template is foam material; template is provided with through hole passing through the template along the thickness direction. An INDEPENDENT CLAIM is also included for the graphene heat-conducting pad, is prepared by immersing graphene material in macromolecule polymer, taking out and waiting for curing, cutting the graphene material into slices along thickness direction, to obtain a graphene thermal pad; in graphene thermal pad, the weight of graphene is 30-70 wt.%, the weight of graphene is 40-60 wt.%.