• 专利标题:   Processing of graphene paper involves pouring graphite flakes and stripping liquid to kettle, heating mixtures, discharging upper suspension to storage tank, centrifuging graphene suspension, obtaining crude film and drying washed film.
  • 专利号:   CN105883775-A
  • 发明人:   DAI J
  • 专利权人:   DAI J
  • 国际专利分类:   C01B031/04
  • 专利详细信息:   CN105883775-A 24 Aug 2016 C01B-031/04 201674 Pages: 5 Chinese
  • 申请详细信息:   CN105883775-A CN10750682 09 Dec 2014
  • 优先权号:   CN10750682

▎ 摘  要

NOVELTY - Processing of graphene paper involves pouring graphite flakes and stripping liquid into kettle, mixing to obtain evenly mixed material, heating at 50-150 degrees C in pressure of 1-3 atmosphere, stirring with stirrer at 1000-2000 rpm for 3-6 hours, discharging upper suspension through discharge port to storage tank, standing still for more than 24 hours to obtain initial product, passing graphene suspension from storage tank to centrifuge, centrifuging to obtain supernatant, drying to obtain crude film, washing film by spraying ethanol and distilled water, and drying in freeze-dryer. USE - Processing of graphene paper (claimed). ADVANTAGE - The method produces graphene paper with high efficiency. DETAILED DESCRIPTION - Processing of graphene paper involves (a) pouring graphite flakes and stripping liquid according to the weight ratio of 1:2-10 into the kettle having a stirrer, stirring is started by the motor of kettle to obtain evenly mixed material where the stripping liquid comprises 100 pts. wt. ethanol, 30-60 pts. wt. cyclopentadiene and 10-20 pts. wt. trivalent iron salt, (b) heating the kettle at 50-150 degrees C in pressure of 1-3 atmosphere, stirring with a stirrer at 1000-2000 rpm for 3-6 hours, (c) discharging the upper suspension through discharge port to storage tank after stopping the reaction, standing still for more than 24 hours to obtain the initial product, (d) passing the graphene suspension from storage tank to centrifuge, centrifuging at 1000-6000 rpm for 10 minutes-2 hours, taking the supernatant which is spin coated, drying to obtain crude film and (e) washing the film by spraying ethanol and distilled water and drying in a freeze-dryer.