• 专利标题:   Producing graphene by physical methods comprises e.g. taking expandable graphite as raw material, then high temperature adhesive forming to predetermined size, placing formed graphite sheet in liquid phase and applying vacuum shear stress.
  • 专利号:   CN109019576-A
  • 发明人:   JIAO Y
  • 专利权人:   QITAIHE BAOTAILONG GRAPHENE NEW MATERIAL
  • 国际专利分类:   C01B032/19, C01B032/194
  • 专利详细信息:   CN109019576-A 18 Dec 2018 C01B-032/19 201910 Pages: 7 Chinese
  • 申请详细信息:   CN109019576-A CN11029218 05 Sep 2018
  • 优先权号:   CN11029218

▎ 摘  要

NOVELTY - Producing graphene by physical methods comprises (i) taking expandable graphite as a raw material, and then high temperature adhesive forming to predetermined size, (ii) placing formed graphite sheet in a liquid phase, then applying vacuum shear stress, and peeling off the graphite sheet, (iii) washing the stripped graphite sheet, separating from the liquid phase, drying, and then dispersing into a dispersion medium for secondary stripping and dispersing, (iv) condensing or diluting dispersed slurry to obtain graphene conductive paste with different concentrations, (v) removing dispersed slurry from a small amount of functional groups generated during the shearing process, and further dissolving and separating the dispersion after removing a small amount of functional groups, and (vi) performing vacuum drying to obtain graphene powder. USE - The method is useful for producing graphene by physical methods. ADVANTAGE - The method: has simple process and low production cost; and is easy to operate and suitable for industrial production.