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Title:
GRAPHENE-BASED HIGH-CONDUCTIVITY INK FOR RFID ELECTRONIC TAG, AND PREPARATION METHOD THEREFOR AND APPLICATION THEREOF
Document Type and Number:
WIPO Patent Application WO/2022/120571
Kind Code:
A1
Abstract:
Disclosed in the present invention are a graphene-based high-conductivity ink for an RFID electronic tag, and a preparation method therefor and an application thereof. The raw materials comprise a conductive agent, a resin matrix, and solvents; the conductive agent is a graphene powder or a combination thereof with other conductive agents; the solvents comprise water and an organic solvent miscible with water. The preparation comprises: mixing the graphene powder with water for dispersion to obtain an aqueous dispersion of graphene, and concentrating the aqueous dispersion into a first concentrated slurry; adding the organic solvent, mixing, evaporating part of the water and part of the organic solvent to obtain a second concentrated slurry, adding the remaining raw materials, and mixing to obtain a graphene-based high-conductivity ink for an RFID electronic tag. The graphene-based high-conductivity ink for an RFID electronic tag prepared by the method above is used to prepare an RFID antenna by means of printing. The ink prepared by the method has a high content of graphene and good dispersity, the amount of the organic solvent is greatly reduced, the amount of precious metal is reduced while ensuring certain conductive performance, and an RFID antenna can be manufactured by means of printing.

Inventors:
LIN HONGZHEN (CN)
CHENG SHUANG (CN)
WANG JIAN (CN)
LI LINGE (CN)
LI FUJIN (CN)
Application Number:
PCT/CN2020/134533
Publication Date:
June 16, 2022
Filing Date:
December 08, 2020
Export Citation:
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Assignee:
SUZHOU CSTAR MATERIAL TECH CO LTD (CN)
International Classes:
C09D11/03; C09D11/52; C09D11/033; G06K17/00
Foreign References:
CN107964283A2018-04-27
RU2665397C12018-08-29
CN111073396A2020-04-28
CN104277592A2015-01-14
US20150072162A12015-03-12
Attorney, Agent or Firm:
SUZHOU CREATOR PATENT & TRADEMARK AGENCY, LTD. (CN)
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