Material for RFID (Radio Frequency Identification) antenna conductive pattern

A conductive pattern and radio frequency identification technology, applied in the field of RFID antennas, can solve the problems of high cost and large pollution, and achieve the effects of low cost, high conductivity and high oxidation resistance.

Pending Publication Date: 2018-05-29
HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This solution requires the addition of defoamers, thickeners, and resin binders, resulting in large pollution and high costs

Method used

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  • Material for RFID (Radio Frequency Identification) antenna conductive pattern
  • Material for RFID (Radio Frequency Identification) antenna conductive pattern
  • Material for RFID (Radio Frequency Identification) antenna conductive pattern

Examples

Experimental program
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Effect test

Embodiment 1

[0058] A preparation of a Cu@Ag core-shell structure nanomaterial for radio frequency identification RFID antenna conductive pattern and manufacturing RFID antenna with the material, specifically comprising the following steps:

[0059] (1) Mix 10g PVP and 10g NaH 2 PO 2 ·H 2 O was dissolved in 160ml of ethylene glycol, and heated to 90°C by magnetic stirring to obtain solution A; 10g of CuSO 4 ·5H 2 O was dissolved in 40ml of ethylene glycol, heated to 90°C by magnetic stirring to obtain solution B, and solution B was poured into solution A, and reacted by magnetic stirring for 10 minutes to obtain a Cu nanoparticle solution; the obtained Cu nanoparticle solution was centrifuged, ethanol Repeatedly washing with deionized water three times to obtain Cu nanoparticles, the preferred particle size is about 50nm.

[0060] (2) 2g Cu nanoparticles and 0.64g trisodium citrate were dissolved in 100ml deionized water to obtain solution C; 0.75gAg 2 SO 4 Dissolve in 250ml deionize...

Embodiment 2

[0069] A preparation of a Cu@Ag core-shell structure nanomaterial for radio frequency identification RFID antenna conductive pattern and manufacturing RFID antenna with the material, specifically comprising the following steps:

[0070] (1) Mix 10g PVP and 10g NaH 2 PO 2 ·H 2 O was dissolved in 160ml ethylene glycol, heated to 70°C with magnetic stirring to obtain solution A; 10g CuSO 4 ·5H 2 O was dissolved in 40ml of ethylene glycol, and heated to 70°C by magnetic stirring to obtain solution B. Pour solution B into solution A and react with magnetic stirring for 10 minutes to obtain a Cu nanoparticle solution; the obtained Cu nanoparticle solution was centrifuged and alcohol Repeated washing with deionized water three times to obtain Cu nanoparticles, with a preferred particle size of about 70nm.

[0071] (2) 2g Cu nanoparticles and 0.64g trisodium citrate were dissolved in 100ml deionized water to obtain solution C; 0.75gAg 2 SO 4Dissolve in 250ml deionized water to o...

Embodiment 3

[0074] A preparation of a Cu@Ag core-shell structure nanomaterial for radio frequency identification RFID antenna conductive pattern and manufacturing RFID antenna with the material, specifically comprising the following steps:

[0075] (1) Mix 10g PVP and 10g NaH 2 PO 2 ·H 2 O was dissolved in 160ml ethylene glycol, heated to 70°C with magnetic stirring to obtain solution A; 10g CuSO 4 ·5H 2 O was dissolved in 40ml of ethylene glycol, heated to 70°C by magnetic stirring to obtain solution B, and solution B was poured into solution A, and reacted by magnetic stirring for 10 minutes to obtain a Cu nanoparticle solution; the Cu nanoparticle solution obtained in (1) After repeated washing with centrifugation, alcohol and deionized water three times, Cu nanoparticles are obtained, with a preferred particle size of about 70nm.

[0076] (2) 2g Cu nanoparticles and 0.64g trisodium citrate were dissolved in 100ml deionized water to obtain solution C; 0.75gAg 2 SO 4 Dissolve in 2...

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Abstract

The invention provides a material for an RFID (Radio Frequency Identification) antenna conductive pattern. The material for the RFID antenna conductive pattern has the following specific characteristics that the material is metal nano-particles which are of core-shell structures, wherein the inner cores are Cu particles of about 50 nm, and an Ag layer coats the surfaces of Cu through a composite method of displacement and chemical deposition; Cu@Ag nano-particles, absolute ethyl alcohol and deionized water are mixed to prepare conductive printing ink with the solid content of about 70 percent;the material is obtained through metal stencil printing and sintering. Antenna patterns with different thicknesses can be manufactured by the material by adopting metal stencil printing so as to meetdifferent impedance requirements of antennae of various frequency bands. The Cu@Ag nano-particles have the characteristics of low impedance, high conductivity, controllable Ag layer thickness and thelike; compared with Cu conductive printing ink, the Cu@Ag nano-particles have high oxidation resistance; compared with pure Ag or Au conductive printing ink, the cost is greatly reduced; optimal sintering performance can be realized by controlling the thickness of the Ag layer; moreover, a preparation process of the material is simple and convenient; a printing ink solvent is environment-friendlyand renewable, and has a very great application prospect in the field of conductive printing ink for the RFID antenna.

Description

technical field [0001] The invention belongs to the technical field of materials, and relates to a material used for radio frequency identification (RFID) antenna conductive pattern and its preparation, and an RFID antenna made of the material. Background technique [0002] The radio frequency tag is the physical carrier of the electronic product code (EPC), which is attached to the trackable item and can be circulated globally and identified, read and written. RFID (Radio Frequency Identification) technology, as a key technology to build the "Internet of Things", has attracted people's attention in recent years. RFID technology has many advantages such as high precision, strong ability to adapt to the environment, long reading distance, and convenient application. , it will involve all aspects of human life and has great market value. [0003] The methods for making RFID antennas generally include stamping etching, vacuum deposition, conductive ink and bronzing. The meta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/52C09D11/033H01Q1/22H01Q1/36H01Q1/38B22F1/00B22F1/02B22F9/24B82Y30/00
CPCH01Q1/2225H01Q1/364H01Q1/38C09D11/033C09D11/52C23C18/44B82Y30/00B22F9/24B22F1/054B22F1/17
Inventor 计红军周均博李明雨
Owner HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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