• 专利标题:   Preparation of polyethylene/graphene conductive composite material by adding graphene oxide in water and ethanol solvent, ultrasonically dispersing, adding polyethylene powder under mechanical stirring, and evaporating solvent.
  • 专利号:   CN102585335-A, CN102585335-B
  • 发明人:   HU H, LIU Q, WEN M, ZHAO Z, ZHENG W
  • 专利权人:   UNIV JILIN
  • 国际专利分类:   C08K003/04, C08L023/06, H01B001/24
  • 专利详细信息:   CN102585335-A 18 Jul 2012 C08L-023/06 201267 Pages: 11 Chinese
  • 申请详细信息:   CN102585335-A CN10067339 14 Mar 2012
  • 优先权号:   CN10067339

▎ 摘  要

NOVELTY - Preparation of polyethylene/graphene conductive composite material comprises adding graphene oxide in water and ethanol solvent; ultrasonically dispersing; adding polyethylene powder under mechanical stirring; evaporating solvent; continuously vacuum drying to remove the residual solvent; obtaining polyethylene powder coated with a layer of graphene oxide in a core-shell structure; adding composite particles in hydrazine hydrate solution; heating; mechanically stirring; filtering; washing with deionized water; and vacuum drying. USE - Preparation of polyethylene/graphene conductive composite material (claimed). ADVANTAGE - The method provides composite material with lower percolation threshold value and higher conductivity. DETAILED DESCRIPTION - Preparation of polyethylene/graphene conductive composite material comprising polyethylene powder and graphene oxide at 100:0.05-1.60 mass ratio, where polyethylene powder is coated with graphene oxide, comprises adding graphene oxide in water and ethanol solvent at 50:1 mass ratio; ultrasonically dispersing for 2-3 hours; adding polyethylene powder at 90-95 degrees C under mechanical stirring; evaporating solvent in an oven of 80 degrees C for 24 hours; continuously vacuum drying in an oven at 95 degrees C for 24 hours to remove the residual solvent; obtaining polyethylene powder coated with a layer of graphene oxide in a core-shell structure; adding composite particles in hydrazine hydrate solution, where mass ratio of hydrazine hydrate to graphene oxide coated polyethylene is 7-8:10; heating at 90-95 degrees C; mechanically stirring for 4-6 hours; filtering; washing with deionized water; and vacuum drying to obtain powdered polyethylene/graphene conductive composite material.