Preparation method of transparent conductive small ball, transparent conductive small ball and application

A technology of transparent conductive and small balls, which is applied in the field of electronics, can solve the problems of limited optical transparency of conductive small balls, cumbersome preparation process of conductive small balls, unfavorable development of optoelectronic devices, etc., and achieves short preparation process, excellent mechanical properties, The effect of green environmental protection in the preparation process

Active Publication Date: 2020-05-26
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation process of the above conductive balls is cumbersome, time-consuming, and expensive, and the method of coating the above-mentioned dark-colored conductive materials will limit the optical transparency of the prepared conductive balls, which is not conducive to the development of optoelectronic devices.

Method used

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  • Preparation method of transparent conductive small ball, transparent conductive small ball and application
  • Preparation method of transparent conductive small ball, transparent conductive small ball and application
  • Preparation method of transparent conductive small ball, transparent conductive small ball and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～7

[0043] A kind of transparent conductive bead, and its preparation process is as follows:

[0044] S1: Preparation of polymerizable deep eutectic solvent: Mix hydrogen bond acceptor choline chloride and hydrogen bond donor acrylic acid at a molar ratio of 1:2, heat and stir at 90°C for about 3 hours to form a uniform, colorless polymerizable polymeric deep eutectic solvent;

[0045] S2: Preparation of mixed solution: Add photoinitiator (1173 mixed with TPO at a mass ratio of 1:1) and cross-linking agent polyethylene glycol diacrylate to a polymerizable deep eutectic solvent to obtain a mixed solution. The mass fractions of photoinitiator and crosslinking agent relative to polymerizable deep eutectic solvent are shown in Table 1 respectively;

[0046] S3: Injection preparation: Inhale the mixed solution into a 1ml syringe. An ultraviolet light source is installed on one side of the syringe. The horizontal distance from the ultraviolet light source to the syringe is 17cm, the ve...

Embodiment 8～9

[0051] A transparent conductive ball, the preparation process of which is basically the same as that of Example 1, the difference is that the components of the polymerizable deep eutectic solvent used are different, see Table 2 for details.

[0052] Table 2

[0053] Example hydrogen bond acceptor hydrogen bond donor Molar ratio (hydrogen bond acceptor: hydrogen bond donor) Example 8 betaine monohydrate acrylic acid 1:2 Example 9 ammonium chloride acrylic acid 1:2

Embodiment 10～14

[0055] A transparent conductive pellet, the preparation process of which is basically the same as that of Example 1, the difference is that the process parameters of the injection preparation and polymerization molding processes are different, see Table 3 for details.

[0056] table 3

[0057]

[0058] The diameter of the transparent conductive beads prepared in Examples 1 to 14 is about 2 mm.

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Abstract

The invention discloses a preparation method of a transparent conductive small ball, the transparent conductive small ball and application. The preparation method comprises the following steps of: (1)uniformly mixing a polymerizable eutectic solvent, a photoinitiator and a cross-linking agent to form a mixed solution, with the dosage of the photoinitiator being 1-3% of the polymerizable eutecticsolvent and the dosage of the cross-linking agent being 1-3% of the polymerizable eutectic solvent, and (2) adopting a continuous controllable fluid method injection molding technology, and making theformed liquid drops into transparent conductive small balls under ultraviolet irradiation. The preparation method is rapid, simple and convenient, equipment is easy to obtain, cost is low, no surfactant is needed, and the preparation method is completely environmentally friendly.

Description

technical field [0001] The invention relates to the field of electronics, in particular to a preparation method of transparent conductive beads, transparent conductive beads and applications thereof. Background technique [0002] Conductive spheres can be used in electronic devices, such as flexible pressure sensing devices, human-machine interfaces, optoelectronic devices, and conductive films. The current method of preparing conductive beads is usually to endow them with conductivity by conductive materials (carbon materials, metal nanoparticles, nanowires or conductive polymers, etc.), which are realized by various methods such as spraying, solvent evaporation or microfluidics, such as China Patent CN104342646A discloses the preparation of conductive micro-gold balls by cyanide-free gold plating. However, the preparation process of the above conductive balls is cumbersome, time-consuming, and expensive, and the method of coating the above-mentioned dark-colored conductiv...

Claims

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Application Information

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IPC IPC(8): C08F220/06C08F2/48H01L33/42
CPCC08F2/48C08F220/06H01L33/42H01L2933/0016
Inventor 何明辉仝瑞平蔡玲陈广学田君飞
Owner SOUTH CHINA UNIV OF TECH
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