• 专利标题:   Porous reductive oxidation nanomaterial obtained by mixing carbon nanotubes and graphite, using organic matter with pi bond structure as stabilizer to organically modify surface of carbon nanotube and graphene through conjugation effect.
  • 专利号:   CN111589435-A
  • 发明人:   WANG X, ZHANG X, WANG B, CHEN J, DING Y
  • 专利权人:   UNIV BEIHANG
  • 国际专利分类:   B01J021/18, B01J032/00, C01B032/168, C01B032/174, C01B032/19, C01B032/194, C01G023/053, C08K003/04, C08L063/00, C25B011/12
  • 专利详细信息:   CN111589435-A 28 Aug 2020 B01J-021/18 202074 Pages: 8 Chinese
  • 申请详细信息:   CN111589435-A CN10029210 10 Jan 2020
  • 优先权号:   CN10029210

▎ 摘  要

NOVELTY - Porous reductive oxidation (carbon nanotube/graphene) nanomaterial, is claimed. The material is obtained by mixing carbon nanotubes and graphite, preparing a porous reduction oxidation (carbon nanotube/graphene) hybrid system by the improved Hummers method and chemical reduction method, and using organic matter with pi bond structure as stabilizer to organically modify the surface of carbon nanotube and graphene through conjugation effect to obtain a porous, multi-dimensional reduction and oxidation (carbon nanotube/graphene) nanomaterial dispersion system that can be stably dispersed in an organic solvent and its freeze-dried powder, where the ratio of each component of the nanomaterial system is: the weight ratio of carbon nanotubes and graphene is 1:100-100:5, and the stabilizer accounts for 0.1-5 wt.% of the total amount of carbon nanotubes and graphene. USE - Used as porous reductive oxidation nanomaterial. ADVANTAGE - THe nanomaterial improves the microwave loss performance, avoids agglomeration of the filler in the matrix, improves the impedance matching and loss ability of the material, has low density, low thickness, strong absorption and wide frequency band, and has great application potential. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) preparing porous reductive oxidation (carbon nanotube/graphene) cathode material comprising (i) the porous reduced oxidized carbon nanotube/graphene nanomaterial is directly or freeze-dried and then dispersed in an organic lithium compound solution, stir for 3-8 hours and centrifuge to dry, (ii) according to the weight ratio (70-90): (5- 10): (5-20) the modified porous reduction oxidation (carbon nanotube/graphene) nanomaterial, conductive agent and adhesive are uniform mixing and rolled into porous carbon film and (iii) use conductive adhesive to bond the porous carbon film and the copper foil, heat and cure to obtain a porous reduction oxidation (carbon nanotube/graphene) cathode; and (2) a preparing a reductive oxidation (carbon nanotubes and graphene)/polymer composite absorbing material comprises taking a certain amount of reductive oxidation (carbon nanotubes and graphene) organic solvent dispersion, blended with polymer, uniformly dispersed, then it is placed at room temperature or heated to remove the solvent, and heated to cure to prepare a reductive oxidation (carbon nanotube and graphene)/polymer composite absorbing material, where polymers comprises epoxy resin, polyimide resin, silicone resin and rubber and the content of porous reduction oxidation (carbon nanotube/graphene) in the composite absorbing material is 0.5-10 wt.%.