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Preparation method of particle-free post-treatment conductive silver ink

A post-processing and silver ink technology, which is applied in the field of particle-free post-processing conductive silver ink preparation, can solve the problems of silver mirror reaction, sedimentation, and affecting the film-forming quality of conductive ink, so as to improve adhesion, facilitate operation, and reduce Precipitated Risk Effects

Inactive Publication Date: 2018-09-21
苏州向心力纳米科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Chinese patent application CN201110444509.1 discloses a preparation method of a transparent conductive film based on silver nanowires, which realizes a wide range of adjustment of the haze of the conductive film, but the polymer binders used in this patent are all insoluble resins, Long-term storage will easily lead to different degrees of settlement, and in severe cases, silver mirror reaction will occur, which seriously affects the film-forming quality of conductive ink

Method used

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  • Preparation method of particle-free post-treatment conductive silver ink
  • Preparation method of particle-free post-treatment conductive silver ink
  • Preparation method of particle-free post-treatment conductive silver ink

Examples

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Effect test

Embodiment 1

[0026] A preparation method for particle-free post-treatment silver ink, comprising the following steps:

[0027] a) metal silver salt is added and dissolved in ethylene glycol to prepare a silver-containing precursor solution with a silver ion concentration of 0.2mol / L;

[0028] b) Add PVP (Mw=10000) to the precursor solution containing nano-silver, mix well and react at a temperature of 198° C. for 20 minutes. After the reaction, the product is cooled to room temperature, and then ethanol is added to centrifuge the product at 2500 r / min for 15 minutes. Repeat three times, and obtain the purified product of nano-silver after drying;

[0029] c) adding solvent, cross-linking agent and surface additive respectively to the nano-silver purification product, and mixing and stirring at room temperature for 40min to obtain mixed component A;

[0030] d) Put the mixed component A into an ultrasonic disperser, and ultrasonically disperse at a frequency of 20 kHz for 45 minutes at roo...

Embodiment 2

[0040] A preparation method for particle-free post-treatment silver ink, comprising the following steps:

[0041] a) metal silver salt is added and dissolved in ethylene glycol to prepare a silver-containing precursor solution with a silver ion concentration of 0.4mol / L;

[0042] b) Add PVP (Mw=10000) to the precursor solution containing nano-silver, mix it uniformly and react at a temperature of 200°C for 20 minutes, after the reaction, cool the product to room temperature, then add ethanol and centrifuge the product at 2500r / min for 15 minutes, Repeat three times, and obtain the purified product of nano-silver after drying;

[0043] c) adding a solvent, a cross-linking agent and a surface additive respectively to the nano-silver purified product, and mixing and stirring at room temperature for 50 min to obtain a mixed component A;

[0044] d) Put the mixed component A into an ultrasonic disperser, and ultrasonically disperse at a frequency of 25 kHz for 35 minutes at room t...

Embodiment 3

[0054] A preparation method for particle-free post-treatment silver ink, comprising the following steps:

[0055] a) metal silver salt is added and dissolved in ethylene glycol to obtain a silver-containing precursor solution with a silver ion concentration of 0.6mol / L;

[0056] b) Add PVP (Mw=10000) to the precursor solution containing nano-silver, mix it uniformly and react at a temperature of 203°C for 20 minutes, after the reaction, cool the product to room temperature, then add ethanol and centrifuge the product at 2500r / min for 15 minutes, Repeat three times, and obtain the purified product of nano-silver after drying;

[0057] c) adding solvent, cross-linking agent and surface additive respectively to the nano-silver purification product, and mixing and stirring at room temperature for 80min to obtain mixed component A;

[0058] d) Put the mixed component A into an ultrasonic disperser, and ultrasonically disperse at a frequency of 35 kHz for 35 minutes at room tempera...

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Abstract

The invention relates to the field of electronic information products, in particular to a preparation method of a particle-free post-treatment conductive silver ink. The conductive silver ink has beenwidely used in electronic information industry production. The conductive silver ink is prepared from an organic silver material and a high polymer material. The particle-free post-treatment conductive silver ink has the advantages of simple post-treatment process, good electrical conductivity, good stability and simple preparation method, and is environmentally friendly. The preparation method of the invention also has advantages of mild preparation condition and simple preparation process, is convenient to operate, and is suitable for large-scale production.

Description

technical field [0001] The invention relates to the field of electronic information products, in particular to a preparation method of particle-free post-treatment conductive silver ink. Background technique [0002] In the field of electronic information, conductive film is a widely used product. One of its characteristics is its high electrical conductivity. Especially with the emergence of flexible wearable devices in recent years, the demand for flexible conductive films is increasing, which has attracted a lot of attention. [0003] Functional inks are suitable for printing processes, and can be used to prepare devices such as radio frequency, solar cells, and flexible displays by inkjet printing, screen printing, spray coating, spin coating, pulling, and direct writing. Metallic silver has excellent electrical conductivity, and a lot of research has focused on how to add metallic silver to functional inks to make them have excellent electrical conductivity. Among th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/52C09D11/03
CPCC09D11/03C09D11/52
Inventor 杨勇刘润辉尹耀星
Owner 苏州向心力纳米科技有限公司