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A thermally transferred graphene antenna and its preparation method and application

A graphene and thermal transfer printing technology, applied in antennas, resonant antennas, antenna parts, etc., can solve the problems that three-dimensional objects cannot be conformal, graphene antennas can only be printed on flat substrates, etc.

Active Publication Date: 2021-02-19
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the deficiencies in this field, the present invention provides a method for preparing a graphene antenna, which adopts a thermal transfer printing method, and makes an RFID label on this basis, aiming to solve the problem that the current graphene antenna can only be printed on Problems with flat substrates that cannot conform to three-dimensional objects

Method used

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  • A thermally transferred graphene antenna and its preparation method and application
  • A thermally transferred graphene antenna and its preparation method and application
  • A thermally transferred graphene antenna and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0040] The pattern of the graphene antenna is a graphene printing layer, and the graphene printing layer is transferred to the target substrate together with the thermal transfer film. The specific steps include:

[0041] Step 01: Print the graphene conductive ink on the thermal transfer paper by screen printing to form a graphene printing layer, the printing speed is 5-100 mm / s, and the graphene printing layer is in the shape of the designed antenna ;

[0042] Step 02: Use thermal curing to dry and cure the graphene printing layer, the curing temperature is 50-120°C, and the time is 10-120 minutes;

[0043] Step 03: Thermally transfer the structure obtained in Step 02 at a temperature of 150-300°C for 1-10 minutes, so that the graphene printing layer is detached from the thermal transfer paper substrate and transferred to the target substrate.

[0044] In this embodiment, the printing technology of screen printing is adopted to prepare the graphene printing layer, but it is ...

Embodiment 2

[0050]The pattern of the graphene antenna is formed by micro-nano processing of the graphene printing layer by micro-nano processing technology, and the patterned graphene printing layer is transferred to the substrate together with the thermal transfer film, which specifically includes the following steps:

[0051] Step 01: Print the graphene conductive ink on the thermal transfer paper by scraping to form a graphene printing layer, and the printing speed is 5-100 mm / s;

[0052] Step 02: Dry and solidify the graphene printing layer by thermal curing, the curing temperature is 50-120 degrees Celsius, and the curing time is 10-120 minutes;

[0053] Step 03: Use laser engraving technology to pattern the graphene printing layer, and etch out the designed antenna pattern;

[0054] Step 04: Thermally transfer the structure obtained in step 03 at a temperature of 150-300°C for 1-10 minutes, so that the graphene printing layer is detached from the thermal transfer paper substrate and...

Embodiment 3

[0061] The prepared graphene antenna is connected to the RFID chip through conductive silver paste to form an RFID tag based on the printed graphene antenna. Among them, the RFID chip can be purchased from the market or designed and manufactured by itself according to the actual scene requirements.

[0062] Such as image 3 As shown, the graphene antenna-based RFID tag prepared by the present invention consists of a graphene antenna 4 and an RFID chip 6 in two parts.

[0063] Embodiment 3 uses conductive silver paste to connect graphene antenna 4 with RFID chip 6, but also can use other conductive adhesives, comprise metal conductive adhesive and non-metallic conductive adhesive; RFID chip 6 can not be placed on even Between the two arms of the pole antenna, but the pins of the chip must be electrically connected to the antenna to form a conductive path. Using micro-nano processing technology, if the size is appropriate, the RFID chip 6 can be placed directly between the two...

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Abstract

The invention discloses a thermal transfer graphene antenna and a preparation method thereof. The preparation method comprises: printing graphene conductive ink on thermal transfer paper, forming a graphene printing layer and then performing thermal transfer to make graphene The printed layer is released from the thermal transfer paper and transferred to the target substrate. The process for preparing the graphene antenna of the present invention is energy-saving and environmentally friendly, and can be applied to industrialized production in combination with a large-scale production technology such as a roll-to-roll technology. The graphene antenna pattern prepared by the present invention can be individually designed to meet the needs of different usage scenarios. The invention also discloses an RFID tag, which is obtained by electrically connecting the graphene antenna and the RFID chip. The graphene antenna prepared by the invention can be transferred to any target substrate including an uneven three-dimensional substrate, and is perfectly conformal to the substrate, thereby expanding the application of the RFID tag in the field of the Internet of Things.

Description

technical field [0001] The invention relates to the technical field of printed electronics, in particular to a heat-transferred graphene antenna and a preparation method and application thereof. Background technique [0002] In recent years, printed electronics has attracted more and more researchers' interest. Printed electronics has a wide range of applications, such as antennas, transparent electrodes, solar cells, thin-film transistors, light-emitting devices, etc. [0003] The most commonly used conductive inks for printed electronics today are metal-based conductive inks. Metallic conductive inks have very high electrical conductivity and very good mechanical properties. But there are also many very prominent disadvantages, for example, although silver has a very high electrical conductivity, its price is very high. Although aluminum and copper are cheaper than silver, they are easily oxidized in air to form non-conductive oxides. Moreover, metal conductive ink usu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/22H01Q1/36H01Q1/38H01Q9/20G06K19/077
CPCG06K19/07773H01Q1/2225H01Q1/368H01Q1/38H01Q9/20
Inventor 徐明生王维佳
Owner ZHEJIANG UNIV
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