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Graphene conductive paste and preparation method and RFID electronic tag

A technology of conductive paste and graphene, which is applied in the direction of conductive materials dispersed in non-conductive inorganic materials, cable/conductor manufacturing, circuits, etc., can solve the problems of poor dispersion of conductive paste, achieve good wear resistance, increase Effect of improving bonding strength and dispersibility

Active Publication Date: 2021-08-06
SHANDONG HUAGUAN SMART CARD
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Problems solved by technology

[0005] In order to solve the above problems, a graphene conductive paste and its preparation method and RFID electronic tag are provided to overcome the technical problem of poor dispersibility of the graphene conductive paste in the prior art, so as to obtain a conductive paste with good stability and excellent electrical conductivity. Slurry and RFID tags

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  • Graphene conductive paste and preparation method and RFID electronic tag
  • Graphene conductive paste and preparation method and RFID electronic tag

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Embodiment 1

[0039] This embodiment provides a graphene conductive paste, which is composed of the following components in parts by weight: 6 parts of graphene, 4 parts of silane modified expanded graphite, epoxy resin modified siloxane 1.5 parts, 0.8 parts of polyethylene glycol (dispersant) and 90-96 parts of deionized water solvent (solvent), viscosity modifier is sodium carboxymethyl cellulose;

[0040] Among them, during the modification of expanded graphite, the weight ratio of silane coupling agent to expanded graphite is 1:4, and during the modification of siloxane, the weight ratio of bisphenol A epoxy resin to siloxane is 5:9.

[0041] With above-mentioned raw material component, adopt following method to prepare and obtain graphene conductive paste:

[0042] S1. Modification of expanded graphite: react silane coupling agent and expanded graphite with a weight ratio of 1:4 in aqueous hydrochloric acid solution with a concentration of 0.5% at a temperature of 50-60°C for 80-100min...

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Abstract

The application discloses a graphene conductive paste, a preparation method thereof, and an RFID electronic tag. The graphene conductive paste includes the following components calculated in parts by weight: 4-8 parts of graphene, 3 parts of modified carbon conductive agent ‑5 parts, 1‑2 parts of modified siloxane, 0.5‑1 part of dispersant and 90‑96 parts of solvent; modified carbon conductive agent is made by modifying carbon conductive agent with silane coupling agent, silane coupling agent The weight ratio with the carbon conductive agent is 1:(3-5); modified siloxane is made by modifying siloxane with epoxy resin, and the weight ratio of epoxy resin and siloxane is (4-5). 6): 9. The graphene conductive paste provided by the application effectively improves the dispersion, stability and conductivity of graphene in the graphene conductive paste by modifying the carbon conductive agent and siloxane, and at the same time, it is used in the RFID electronic tag The adhesion strength and wear resistance of the graphene conductive paste and the substrate are also improved during the printing process, effectively improving the printing performance of the conductive paste.

Description

technical field [0001] The application relates to a graphene conductive paste, a preparation method and an RFID electronic tag, belonging to the technical field of conductive paste. Background technique [0002] At present, some foreign manufacturers of radio frequency identification technology RFID have restarted the key technology and industrialization research of printing RFID electronic tags with graphene paste, such as the British BGTM company. However, due to the completely different appearance and conductive properties of graphene from traditional conductive filler silver powder, the formula and process of graphene-based conductive paste are also completely different. Moreover, the conductive paste based on graphene has the problems of difficult dispersion, easy agglomeration, and poor printing adaptability in actual production. [0003] First of all, in order to meet environmental protection standards, printing pastes are more inclined to choose water-soluble pastes...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B1/24H01B13/00G06K19/077
CPCG06K19/0772G06K19/07773H01B1/24H01B13/00
Inventor 刘振禹马有明陈韶华亓秀昌刘进赵娟韩鹏
Owner SHANDONG HUAGUAN SMART CARD
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