Preparation method and application method of high-concentration silver nanowire stable ink for storage

A silver nanowire, high-concentration technology, applied in inks, applications, household utensils, etc., can solve the problems that must be prepared and used immediately, and achieve the effect of easy storage, simple use and high concentration

Active Publication Date: 2019-03-05
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The above studies are all aimed at improving the mechanical, optical, and electrical properties of transparent conductive films and devices by adjusting the composition of silver nanowire inks. However, silver nanowire inks based on water or ethanol are prone to irreversible agglomeration when placed for a long time. It is used now, and no patent or literature has been seen to mention the stability of the silver nanowire ink storage process; for industrial production and application, it is particularly important to prepare ink that can be stored stably and taken at any time without deterioration, which is exactly what the present invention wants The problem to be solved is to invent a method for preparing and using a high-concentration silver nanowire stable ink for storage
[0003] There is no report of high-concentration silver nanowire stable ink in the literature and patents

Method used

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  • Preparation method and application method of high-concentration silver nanowire stable ink for storage
  • Preparation method and application method of high-concentration silver nanowire stable ink for storage
  • Preparation method and application method of high-concentration silver nanowire stable ink for storage

Examples

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Embodiment example 1

[0040] A method for preparing a high-concentration silver nanowire stable ink for storage, comprising the following steps:

[0041] 1. Preparation of silver nanowires with a diameter of less than 60nm and a length of 10-300μm by polyol method:

[0042] ①Preparation of ferric chloride ethylene glycol solution: weigh 0.013g ferric chloride (FeCl 3 ) was dissolved in 80ml ethylene glycol (EG), and stirred evenly;

[0043] ②Preparation of mixed PVP ethylene glycol solution: weigh 0.0800g PVP (Mw=55000) and 0.0830g PVP (Mw=360000), put them into 22ml ethylene glycol solution, and stir on a heating plate at 130°C dissolve;

[0044] ③ Preparation of silver nitrate ethylene glycol solution: weigh 0.1800g AgNO 3 , Put it into 3ml of ethylene glycol solution, in an ice bath (2-10°C) sonicate for 5min to fully dissolve it;

[0045] ④Synthesis of silver nanowires:

[0046] Heat treatment of mixed PVP ethylene glycol solution: heat the solution in step ② in a heating mantle, set the t...

Embodiment example 2

[0053] A method for preparing a high-concentration silver nanowire stable ink for storage, comprising the following steps:

[0054] On the basis of the implementation of Case 1, change step 2 to: add 1500mg PVP1300000 to the mixture of 15ml ethylene glycol, 30ml N-methylpyrrolidone and 5ml glycerin, stir for 5h to prepare the precursor solution; at the same time, add step 3 Change to: disperse 30mg of silver nanowires in 3ml of precursor solution, stir for 30min to make it uniformly dispersed, and prepare 10mg / ml silver nanowire stable ink.

Embodiment example 3

[0056] A method for preparing a high-concentration silver nanowire stable ink for storage, comprising the following steps:

[0057] On the basis of the implementation of Case 1, change step 2 to: add 1500mg PVP1300000 to the mixture of 20ml ethylene glycol, 25ml N-methylpyrrolidone and 5ml glycerin, stir for 5h to prepare the precursor solution; at the same time, add step 3 Change to: disperse 60mg of silver nanowires in 3ml of precursor liquid, stir for 30min to make the dispersion uniform, and prepare 20mg / ml silver nanowire stable ink.

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Abstract

The invention provides a preparation method and a use method of high-concentration silver nano-wire stabilized ink used for storage. The silver nano-wire stabilized ink with the solid content of 0.05-10wt% is obtained by using a silver nano-wire prepared through a salt assisted polyol technology as a conductive filler and PVP as a surfactant and a viscosity adjusting agent, adding an organic solvent and stirring for 30-35min. The silver nano-wire is purified through simply cleaning the prepared stabilized ink. The purified silver nano-wire can be used to produce high-performance transparent electrodes. The preparation method has the advantages of simplicity, easy implementation, good repeatability, high-concentration nano-wire storage benefiting and large scale production.

Description

technical field [0001] The invention relates to a preparation method and a use method of conductive ink. Background technique [0002] The transparent electrodes widely used in the new generation of flexible electronic devices determine the performance of the device, and the preparation of silver nanowire ink is the core of making transparent electrodes, and its research and development work has received extensive attention. Chinese invention patent CN102391737 has developed a formula of water-soluble silver nanowire ink, which is used to solve the problem of the adhesion between silver nanowires and the substrate in the prepared high-performance transparent conductive film. Chinese invention patent CN101921505 discloses a preparation method of nano-silver conductive ink applied to a radio frequency identification system. The paper Langmuir.2012,28:7101-7106, developed a conductive ink based on silver nanowires and polyethylene oxide, which is applied to electromagnetic shi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D11/52
Inventor 叶长辉陈超贾永高季书林
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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