Preparation method for nanometer conductive ink

A nano-conductive and ink technology, which is applied in the field of nano-materials, can solve the problems that nano-metal particle inks cannot be prepared, cannot be used as conductive inks, and reduce circuit reliability. It achieves high conductivity, wide application, and low-temperature sintering. Effect

Inactive Publication Date: 2012-11-07
侯李明
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this invention still has the problems of high cost and high curing temperature, and the simple two alloys are prone to galvanic reaction in a humid environment, which reduces the reliability of the circuit
[0006] U.S. Patent US2010 / 0171064 A1 discloses a nano-metal alloy with a core-shell structure as a nano-metal ink. The core is a magnetic material including iron, cobalt, nickel and its alloys. The outer layer is a highly conductive metal. The invention can prepare Nanoparticles with uniform particle size, and can prevent printing margins. However, due to the use of magnetic metals, the invention has poor conductivity and cannot be used in some special occasions that are sensitive to magnetic fields
[0007] Chinese patent 01138495.6 discloses a conductive ink composition using an epoxy thermal curing system, prepared with silver, copper, or silver-clad copper as a conductive medium, but this invention cannot be used as a conductive ink due to the viscosity of the system and the size of the conductive particles
However, it cannot be used for the formation of nano-metal particles and the preparation of inks.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Embodiment 1: Take 500ml 0.1mol / L copper sulfate solution, add ammonia water to adjust the pH value to 4, and add it to the reaction vessel; another 150ml 0.1mol / L sodium hypophosphite, add 350ml ethanol solution, weigh 10g of Polyvinylpyrrolidone (PVP) was dissolved in it, stirred evenly and then added to the constant flow pump. The reaction vessel was heated to 130° C., and the constant flow pump was turned on to add dropwise at a rate of 2 ml / min, with high-speed stirring at a rate of 1000 rpm. After the dropwise addition was completed, the stirring was continued for 30 min, and cooled to room temperature. The solution was separated with a high-speed centrifuge, and 700ml of supernatant was removed each time and the remaining sediment was washed with distilled water for 3 times, and finally diluted to 1000ml, wherein the speed of the high-speed centrifuge was set at 12000 rpm. Weigh 3g of silver nitrate, add 200ml of deionized water, then add 30ml of ammonia water a...

Embodiment 2

[0046] Embodiment 2: Take 500ml of 0.1mol / l copper sulfate solution, add ammonia water to adjust the pH to 4, and then add it to the reaction vessel. Add 350ml of ethanol solution to 5ml of hydrazine hydrate, weigh 2.5g of polyvinylpyrrolidone (PVP) and 25ml of oleic acid to dissolve in it, stir well and add to the constant flow pump. The reaction vessel was heated to 60° C., and the constant flow pump was turned on to add dropwise at a rate of 2 ml / min, with high-speed stirring at a rate of 800 rpm. After the dropwise addition was completed, the stirring was continued for 15 min, the heating was stopped and the mixture was cooled to room temperature. The solution was separated with a high-speed centrifuge, removing 700ml of supernatant each time and washing the remaining sediment 3 times with distilled water, and finally diluted to 1000ml, wherein the speed of the high-speed centrifuge was set at 15000 rpm. Dissolve 2g of gold salt containing long-chain alkyl acids in 10ml o...

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Abstract

The invention relates to a preparation method for nanometer conductive ink, and particularly relates to a preparation method for a novel nanometer metal conductive ink which is low in production cost, good in stability and excellent in electrical conductivity, and has a core-shell structure. The nanometer conductive ink is simple in process, short in process time, and suitable for mass production.

Description

technical field [0001] The invention belongs to the technical field of nanomaterials, and in particular relates to a method for preparing a nano-metal conductive ink, in particular to a preparation of a novel nano-metal conductive ink with a core-shell structure with low preparation cost, good stability and excellent electrical conductivity method. Background technique [0002] With the development of electronic information technology, the demand for electronic products and data communication devices with smaller, higher integration and lower cost requirements is gradually increasing, and conductive ink in the traditional sense cannot meet the requirements of technological development. Nano conductive ink is an ideal solution. Due to its good conductivity, low sintering temperature, fine lines, it can form electronic circuits by additive method, and has little impact on the environment. It has been used in military industry, aerospace, radio frequency identification (RFID) ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/00C09D11/02C09D11/52
Inventor 刘锋侯李明杨兆国
Owner 侯李明
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