• 专利标题:   Preparing ultra-high frequency graphene conductive paste useful for e.g. electronic label and public traffic management commercial retail, comprises e.g. dispersing graphene oxide and ultrasonic dispersion surfactant in water, and microwave processing porous graphene oxide dispersion liquid.
  • 专利号:   CN114792576-A, CN114792576-B
  • 发明人:   LI C, HAN P, ZHAO J, MA Y, LENG J, WEI H, LI J, CHEN S, LIU Z
  • 专利权人:   SHANDONG HUAGUAN SMART CARD CO LTD
  • 国际专利分类:   C01B032/184, G06K019/077, H01B001/24, H01B013/00
  • 专利详细信息:   CN114792576-A 26 Jul 2022 H01B-001/24 202282 Chinese
  • 申请详细信息:   CN114792576-A CN10707811 22 Jun 2022
  • 优先权号:   CN10707811

▎ 摘  要

NOVELTY - Preparing ultra-high-frequency graphene conductive paste comprises dispersing graphene oxide and ultrasonic dispersion surfactant in aqueous solution for 15-25 minutes, etching the porous graphene oxide dispersion liquid with 3-6 wt.% hydrogen peroxide solution, where the ratio of secondary alkyl sodium sulfate to water is (1-5):(20-25):(80-100), microwave processing porous graphene oxide dispersion liquid, adding reduction agent to reduce, collecting precipitate, drying to obtain porous reduction graphene oxide, dissolving the porous reduced graphene oxide in water for 1-3 minutes, and ultrasonically dispersing for 1-3 minutes to obtain the final product. USE - The paste is useful for electronic label i.e. RFID electronic label (claimed), public traffic management commercial retail, logistics management and anti-fake field. ADVANTAGE - The paste has high frequency and low dielectric properties, and avoids the generation of the sawtooth around the antenna. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: ultra-high-frequency graphene conductive paste; and electronic label.