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Conductive ink and preparation method thereof

An ink, transparent and conductive technology, applied in inks, household appliances, applications, etc., can solve the problems of inability to pattern the transparent conductive layer coating process, inability to use screen printing, low light transmittance, etc., to improve the probability of overlapping , The effect of reducing surface roughness and high optical transmittance

Inactive Publication Date: 2016-10-26
珠海纳金科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is also obtained by photocuring after screen printing, but due to the high resin content, high ink solid content (over 60%), and the thicker film layer obtained by screen printing according to the current screen thickness, the square resistance will eventually be biased. Large, low light transmittance, high haze
Chinese patent application 201510526785.0 discloses a preparation method of transparent conductive nano-silver ink and transparent conductive film. The ink also has the characteristics of low light transmittance and high haze, and the transparent conductive layer cannot be patterned by coating process
Chinese patent application 201510296650.X discloses an anti-sedimentation, self-leveling nano-silver wire conductive ink and a method for preparing a transparent conductive film from it. The ink can be used for wire bar roll coating, but cannot be used for screen printing

Method used

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  • Conductive ink and preparation method thereof
  • Conductive ink and preparation method thereof
  • Conductive ink and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Prepare transparent conductive ink as follows:

[0048] Get 250g PEDOT / PSS (Germany Heraeus PH1000) in 2000mL beaker, under the stirring of 500r / min, add the isopropanol solution of 250g nano-silver wire (wherein the concentration of nano-silver wire is 10mg / mL, average wire diameter is 40nm, The average line length is 40μm, the aspect ratio is 1000, figure 1 It is a 10,000-fold magnification of the scanning electron microscope of the nano-silver wire. figure 2 It is the 100,000-fold magnification of the scanning electron microscope of the silver nanowire), after dispersing for 10 minutes, add 50g of dimethyl sulfoxide, 20g of alkali-soluble thickener (Rohm and Haas ASE-60), and surfactant (Tego dispersers740w) in sequence 5g, leveling agent (Tego Glid410) 5g, water-based polyurethane 5g, continue to disperse for 10min, then add isopropanol: deionized water=1: 1 mixed solvent 415g, continue to disperse for 10min, then add 5g ammoniacal liquor, adjust the pH value at ...

Embodiment 2

[0052] Prepare transparent conductive ink as follows:

[0053] Get 350gPEDOT / PSS (Germany Heraeus PH1000) in 2000mL beaker, under the stirring of 500r / min, add the isopropanol solution of 150g nano-silver wire (wherein the concentration of nano-silver wire is 10mg / mL, the average wire diameter is 30nm, The average line length is 30 μm, the aspect ratio is 1000), after dispersing for 10 minutes, add 50 g of dimethyl sulfoxide, 20 g of hydroxypropyl methylcellulose, 5 g of surfactant (TRITONx100), and 5 g of leveling agent (Tego Glid410) , 5g of water-based acrylic resin, continue to disperse for 10min, then add 415g of mixed solvent of isopropanol: deionized water=1:1, continue to disperse for 10min, then add 4g of diethanolamine, adjust the pH value between 8 and 9, and ultrasonically vibrate 5min, after mixing evenly, a transparent conductive ink for screen printing was prepared.

[0054] Prepare transparent conductive film according to the following method:

[0055] Using ...

Embodiment 3

[0057] Prepare transparent conductive ink as follows:

[0058] Take 350g PEDOT / PSS (purchased from Shanghai Chunyuan Phytochemical Co., Ltd.) in a 2000mL beaker, add 150g nano-silver wire propylene glycol methyl ether solution under stirring at 500r / min (wherein the nano-silver wire concentration is 10mg / mL, the average wire Diameter is 30nm, average line length is 30μm, aspect ratio 1000), after dispersing for 10min, add dimethyl sulfoxide 50g, hydrophobically modified non-polyurethane thickener (L100 of Rockwood) 20g, surfactant ( BYK-151) 5g, leveling agent (TegoGlid410) 5g, water-based acrylic resin 5g, continue to disperse for 10min, then add ethylene glycol: deionized water = 1: 1 mixed solvent 415g, continue to disperse for 10min, then add 5g of triethanolamine , adjust the pH value between 8 and 9, ultrasonically oscillate for 5 minutes, and mix evenly to prepare a transparent conductive ink for silk screen printing.

[0059] Prepare transparent conductive film accord...

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Abstract

The invention belongs to the field of conductive ink and discloses transparent conductive ink and a preparation method thereof. The transparent conductive ink is prepared from, by weight, 0.5-50 parts of nano silver wire dispersion liquid, 15-35 parts of poly(3,4-ethylenedioxy thiophene)-poly(styrene sulfonic acid), 5-40 parts of an organic solvent, 5-40 parts of deionized water, 1-8 parts of dimethyl sulfoxide, 0.1-5 parts of a viscosity modifier, 0.01-1 part of a pH regulator, 0.01-2 parts of a surfactant, 0.01-1 part of a leveling agent and 0.1-0.5 part of an adhesion promoter. The solid content of the transparent conductive ink is no more than 2%; due to addition of dimethyl sulfoxide in a formulation of the conductive ink, conductivity of a PEDOT / PSS and nano silver wire combined system is effectively improved; a prepared transparent conductive film has advantages of high optical transmittance, low haze and low surface square resistance and is excellent in adhesion, conductivity and environmental stability.

Description

technical field [0001] The invention belongs to the field of conductive ink, in particular to a transparent conductive ink for screen printing and a preparation method thereof. Background technique [0002] With the increasing material level, consumers' requirements for electronic products are rapidly developing in terms of thinner, lighter, more flexible, and more visualized. Flexible display technology enables the display to have the characteristics of being able to bend or curl into any shape, and has the characteristics of being light, thin and easy to carry. Personal consumer electronics products on the existing market mainly use hard inorganic oxide materials such as indium tin oxide (ITO) as products such as mobile phone touch screens, solar energy, electromagnetic shielding, LED displays, electroluminescent devices, membrane switches, and cold light sheets. The core part of indium tin oxide is difficult to apply in flexible optoelectronic devices due to its brittlen...

Claims

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Application Information

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IPC IPC(8): C09D11/0235C09D11/033C09D11/03C09D11/102C09D11/52
CPCC09D11/0235C09D11/03C09D11/033C09D11/102C09D11/52
Inventor 吴浩松丁轶雷震
Owner 珠海纳金科技有限公司
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