• 专利标题:   Flexible heating film comprises conductive structure comprising carbon nanotubes and/or graphene, and polyimide backbone that is chemically linked to aminated conductive structure via anhydride bonds.
  • 专利号:   CN114106385-A
  • 发明人:   ZHENG T, ZHANG M, ZHANG Y, MAO O, ZUO B
  • 专利权人:   JIANGSU CNANO TECHNOLOGY CO LTD
  • 国际专利分类:   C08J007/044, C08L079/08, C09D179/08, C09D005/24, H01B001/24, H01B013/00, H05B003/14, H05B003/34, H05B003/36
  • 专利详细信息:   CN114106385-A 01 Mar 2022 C08J-007/044 202242 Chinese
  • 申请详细信息:   CN114106385-A CN11337785 12 Nov 2021
  • 优先权号:   CN11337785

▎ 摘  要

NOVELTY - Flexible heating film comprises a conductive structure comprising carbon nanotubes and/or graphene, and a polyimide backbone which is chemically linked to an aminated conductive structure via anhydride bonds. USE - As flexible heating film. ADVANTAGE - The flexible heating film generates heat more uniformly and has excellent performance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing the flexible heating film comprising (a) dispersing graphene in vitriol oil, slowly adding p-nitroaniline at 56-65degrees Celsius, stirring for 1-3 hours, slowly adding stannous chloride, reacting for 4-6 hours, filtering and washing to neutrality and drying to obtain aminated graphene, or dispersing carbon nanotubes in polyphosphoric acid, slowly adding p-nitrobenzoic acid, stirring and reacting for 1-3 hours at 110-130degrees Celsius, slowly adding stannous chloride, and reacting at 50degrees Celsius for 4-6 hours, filtering and washing to neutrality and drying to obtain aminated carbon nanotubes, (b) adding solvent, aminated graphene and/or aminated carbon nanotubes in step (a), dispersant and surfactant in a sand mill, leaving still for 1.5-3 hours to obtain aminated conductive paste, and (c) dissolving 4,4-diaminodiphenyl ether in the prepared slurry, controlling the temperature at 0-2degrees Celsius, slowly adding pyromellitic anhydride and reacting at room temperature 0.5-2 hours to obtain a composite, coating the composite on a polyimide film or a polyethylene film, and drying in an oven at 100-200degrees Celsius to obtain the product.