• 专利标题:   Preparing in-plane isotropic highly oriented densified graphene film, by formulating graphene oxide into uniform graphene oxide aqueous solution, assembling solution into self-supporting graphene oxide film, immersing in ethanol and drying.
  • 专利号:   CN111807355-A
  • 发明人:   CHENG Q, WAN S
  • 专利权人:   UNIV BEIHANG
  • 国际专利分类:   C01B032/19, C01B032/198
  • 专利详细信息:   CN111807355-A 23 Oct 2020 C01B-032/19 202097 Pages: 12 Chinese
  • 申请详细信息:   CN111807355-A CN10793966 10 Aug 2020
  • 优先权号:   CN10793966

▎ 摘  要

NOVELTY - Method for preparing in-plane isotropic highly oriented densified graphene film, involves (a) formulating graphene oxide into a uniform graphene oxide aqueous solution by agitating ultrasonic method, (b) assembling the graphene oxide aqueous solution into a self-supporting graphene oxide film by vacuum filtration, and (c) immersing the self-supporting graphene oxide film in an ethanol solution and a mixed solution of hydroiodic acid and ethanol in sequence under the traction of external force, washing and drying to obtain the in-plane isotropic highly oriented dense graphene butane sultone-reduced graphene oxide film. USE - The method is useful for preparing in-plane isotropic highly oriented densified graphene film. ADVANTAGE - The graphene film has high orientation of 0.913, porosity of 11.5%, corresponding tensile strength of 508 MPa, Young's modulus of 15.8 GPa, toughness of 7.8 MJ/m3, conductivity of 1202S/ cm, and shielding coefficient for electromagnetic waves with a frequency of 0.3-18 GHz to approximately 35.1 dB.