• 专利标题:   Preparing a graphene/alginate composite material involves carrying out ultrasonic dispersion of graphene oxide in aqueous solution to obtain dispersed graphene oxide solution, adding stabilizer to graphene oxide aqueous solution.
  • 专利号:   CN107501635-A
  • 发明人:   LIU Y, HE C, TANG X, LIN L, XU C
  • 专利权人:   THIRD INST OCEANOGRAPHY STATE OCEANIC AD
  • 国际专利分类:   C08J003/24, C08J005/18, C08K003/04, C08L025/18, C08L039/06, C08L005/04, C09K005/14
  • 专利详细信息:   CN107501635-A 22 Dec 2017 C08L-005/04 201811 Pages: 6 Chinese
  • 申请详细信息:   CN107501635-A CN10666593 07 Aug 2017
  • 优先权号:   CN10666593

▎ 摘  要

NOVELTY - Preparing a graphene/alginate composite material involves carrying out ultrasonic dispersion of graphene The graphene/sodium alginate is mixed with aqueous solution at 40-50 degrees C for drying to evaporate the solvent film to the graphene/alginate composite film. The stabilizer is added to the dispersed graphene oxide aqueous solution at room temperature for ultrasonic dispersion to obtain a stabilizer/graphene oxide aqueous solution. The sodium alginate is dissolved in an aqueous solution to obtain an aqueous sodium alginate solution. USE - Method for preparing a graphene/alginate composite material (claimed). ADVANTAGE - The method enables to prepare a graphene/alginate composite material with good mechanical property, heat-resistant property, flame retardant property and improved conductivity, and suitable for industrial production. DETAILED DESCRIPTION - Preparing a graphene/alginate composite material involves carrying out ultrasonic dispersion of graphene The graphene/sodium alginate is mixed with aqueous solution at 40-50 degrees C for drying to evaporate the solvent film to the graphene/alginate composite film. The stabilizer is added to the dispersed graphene oxide aqueous solution at room temperature for ultrasonic dispersion to obtain a stabilizer/graphene oxide aqueous solution. The sodium alginate is dissolved in an aqueous solution to obtain an aqueous sodium alginate solution. The stabilizer/graphene oxide solution and sodium alginate aqueous solution are mixed and stirred at high speed for 1-3 hours. The reducing agent is added. The reaction temperature of oil bath reaction is 90-100 degrees C and reaction time is 2-4 hours. The graphene/alginate composite film is added into 4% aqueous solution of calcium chloride for crosslinking for 30 minutes. The residual calcium ions are removed with water and placed at room temperature to obtain graphene/alginate composite material.