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A kind of graphene conductive ink and its preparation method and RFID label

A technology of RFID tags and conductive inks, applied in inks, instruments, computing, etc., can solve problems such as poor adhesion, affecting sensitivity and yield, curling, etc.

Active Publication Date: 2021-07-06
SHANDONG HUAGUAN SMART CARD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it has been found in actual production that when the existing commercial graphene conductive paste is attached to the substrate by the gravure printing method, the adhesion after curing is poor, and defects such as cracks and curling are prone to occur; After roller calendering, the outline of the ink layer is easily deformed, which affects the sensitivity and yield of RFID

Method used

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  • A kind of graphene conductive ink and its preparation method and RFID label
  • A kind of graphene conductive ink and its preparation method and RFID label
  • A kind of graphene conductive ink and its preparation method and RFID label

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Embodiment 1

[0036] The present embodiment provides a kind of graphene conductive ink, and this graphene conductive ink is made up of the component of following parts by weight:

[0037] 27 parts of graphene nanosheet powder (average particle size 30 microns, sheet thickness 1-15 nanometers), 50 parts of liquid oil, 3 parts of gel factor, 16 parts of epoxy resin E50, 1-hydroxycycloethyl phenyl ketone 0.3 parts, 1.7 parts of hydroxyethyl acrylate, 1 part of polyether modified polysiloxane, 1 part of BYK-088.

[0038] The above-mentioned raw material components are prepared by the following method to obtain graphene conductive ink:

[0039] Step 1. Under the conditions of turning on ultrasonic dispersion and magnetic stirring at the same time, add the graphene nanosheet powder to the liquid oil in 8 times to obtain a mixed system, wherein the ultrasonic frequency is 20kHz, and the magnetic stirring rate is 1800r / min;

[0040] Step 2. After the addition, heat the mixed system to 100°C, add t...

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Abstract

The application provides a graphene conductive ink, the ink includes the following components by weight: 20-30 parts of graphene, 40-60 parts of liquid oil, 1-3 parts of gel factor, 10-20 parts of binder 0.5-2 parts of photocuring agent and 1-5 parts of auxiliary agent, the liquid oil is vegetable oil and / or mineral oil which is liquid at 10-30°C; the gelling factor is selected from phytosterol, lecithin , tristearin, ethyl cellulose, one or more of fatty alcohols. The graphene conductive ink provided by this application is made into an oil-gel form by using the preparation method provided by this application under the action of specific liquid oil and gel factor, and then supplemented with specific binders, light curing agents and additives , so that the dispersion and stability of graphene in the final conductive ink have been significantly improved, and the components used are green and environmentally friendly, harmless to the environment and human health, and have better printing adaptability in gravure printing.

Description

technical field [0001] The present application relates to the technical field of graphene, in particular to a graphene conductive ink, a preparation method thereof and an RFID tag. 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, the hydrophobicity of graphene makes it easy to agglomerate through strong van der Waals force, and its electrical conductivi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D11/52C09D11/06C09D11/102C09D11/107C09D11/106C09D11/03C09D11/101G06K19/077
CPCC09D11/03C09D11/06C09D11/101C09D11/102C09D11/106C09D11/107C09D11/52G06K19/077
Inventor 刘振禹陈韶华马有明赵娟刘进魏洪标
Owner SHANDONG HUAGUAN SMART CARD
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