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  • 专利标题:   Preparing graphene/aqueous polyurethane composite material involves mixing graphite powder, concentrated vitriol and sodium nitrate mixture, and then stirring obtained mixture.
  • 专利号:   CN104861643-A, CN104861643-B
  • 发明人:   YANG J, ZHANG Y, WU M, WU Q, ZHANG J
  • 专利权人:   UNIV ANHUI
  • 国际专利分类:   C08G018/66, C08K003/04, C08K009/02, C08L075/06, C08L075/08
  • 专利详细信息:   CN104861643-A 26 Aug 2015 C08L-075/08 201602 Pages: 10 Chinese
  • 申请详细信息:   CN104861643-A CN10289998 29 May 2015
  • 优先权号:   CN10289998

▎ 摘　　要

NOVELTY - Graphene/aqueous polyurethane composite material preparation involves mixing graphite powder, concentrated vitriol and sodium nitrate mixture. The obtained mixture is stirred. The obtained stirred mixture is added with potassium permanganate. the obtained mixture is kept for reaction for 2-3 hours. The obtained mixture is stirred at 25-40 degrees C for 24 hours. The obtained mixture is added with distilled water. The obtained mixture is stirred for 15-30 minutes. The obtained mixture is centrifuged. The obtained mixture is washed. USE - Method for preparing graphene/aqueous polyurethane composite material (claimed). ADVANTAGE - The method enable to prepare graphene/aqueous polyurethane composite material in an eco-friendly manner, and has heat stability. DETAILED DESCRIPTION - Graphene/aqueous polyurethane composite material preparation involves mixing graphite powder, concentrated vitriol and sodium nitrate mixture. The obtained mixture is stirred. The obtained stirred mixture is added with potassium permanganate. the obtained mixture is kept for reaction for 2-3 hours. The obtained mixture is stirred at 25-40 degrees C for 24 hours. The obtained mixture is added with distilled water. The obtained mixture is stirred for 15-30 minutes. The obtained mixture is centrifuged. The obtained mixture is washed. The obtained washed mixture is added with sodium nitrate and potassium permanganate. The obtained mixture is stirred. The obtained stirred mixture is added with ethylene diamine. The obtained mixture is heated at 50-100 degrees C for 8-24 hours. The obtained mixture is dried. The obtained dried mixture is added with graphene dispersing water solution. The obtained mixture is heated at 60-100 degrees C for 0.5-5 hours. The obtained mixture is added with chain extender. The obtained mixture is heated at 40-80 degrees C for 10 minutes. The obtained mixture is added with proper acetone and polyurethane prepolymer. The obtained mixture is cooled at 30-40 degrees C. The obtained mixture is added with neutralizing agent. The obtained mixture is stirred for 10-30 minutes.