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A kind of colored liquid metal printing ink and preparation method thereof

A liquid metal, printing ink technology, applied in ink, household appliances, applications, etc., can solve problems such as poor compatibility, unsatisfactory uniformity and stability of color liquid metal materials, etc.

Active Publication Date: 2020-07-07
BEIJING DREAM INK TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problem in the prior art that the color of traditional liquid metal is single, and the existing disclosed preparation method of colored liquid metal material is not suitable for the application of printing ink, the present invention provides a color liquid metal-based composite printing material, by first preparing a highly dispersed It is a new process of adding non-toxic color paste to liquid metal together with a binder. At the same time, high-efficiency grinding and dispersing methods such as planetary ball mills are used to replace the original method of directly using pigments to fill liquid metal to improve color saturation. , to solve the shortcomings of poor compatibility between pigments and liquid metal, and unsatisfactory uniformity and stability of colored liquid metal materials

Method used

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  • A kind of colored liquid metal printing ink and preparation method thereof
  • A kind of colored liquid metal printing ink and preparation method thereof
  • A kind of colored liquid metal printing ink and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

experiment example

[0049] Experimental example wettability test

[0050] The liquid metal formed by gallium and indium at a mass ratio of 1:2, the contact angle measurement data on different substrates are as follows: 156 degrees on polyethylene plastic, 148 degrees on polyvinyl chloride plastic, 149 degrees on polyethylene terephthalate, 148 degrees on nitrile rubber, and 155 degrees on glass substrates, which cannot be printed on the above substrates by screen printing. The contact angle data of other alloys on different substrates are shown in Table 1.

[0051] Directly adding pigment (pigment orange 36, 5g) to gallium indium alloy 60g has no significant change in contact angle, and it cannot be printed by screen printing.

[0052] Add color paste (prepared with the step 1 method of embodiment 1) in gallium indium alloy 60g, the contact angle measurement result is: 145 degrees on polyethylene plastics, 140 degrees on polyvinyl chloride plastics, polyethylene terephthalate 140 degrees on est...

Embodiment 1

[0058] The formula composition of high wettability color liquid metal printing ink is shown in the following table:

[0059]

[0060]

[0061] Comb and block type in the formulation represent comb-like polymer dispersant and block polymer dispersant respectively.

[0062] The preparation method of the high wettability color liquid metal printing ink of this embodiment comprises the following steps:

[0063] Step 1: Preparation of color paste, add dispersant and coupling agent to the solvent according to the above formula, stir with disperser until uniformly dissolved, add defoamer and thickener (in two batches, add half first) to remove foam, add the pigment powder into the above dispersion liquid, fully disperse at 1000r / min for 60min, after the pigment is wetted and dispersed evenly, transfer the mixed slurry to a horizontal sand mill, use zirconia particles as the grinding medium in the Grind for 2 hours under the condition of 5000r / min, add the remaining thickener, ...

Embodiment 2

[0068] The formula composition of high wettability color liquid metal printing ink is shown in the following table:

[0069]

[0070]

[0071] The preparation method of the high wettability color liquid metal printing ink of this embodiment comprises the following steps:

[0072] Step 1: Preparation of color paste, add dispersant and coupling agent to the solvent according to the above formula, stir with a disperser until uniformly dissolved, add half of the defoamer and thickener to remove foam, and add the pigment powder to the above In the dispersion liquid, fully disperse at 800r / min for 40min. After the pigment is wetted and dispersed evenly, transfer the mixed slurry to a horizontal sand mill, and use zirconia particles as the grinding medium to grind at 3000r / min for 2h. , add the remaining thickener, make the viscosity of the color paste obtained by filtration be 3900cp, and obtain the color paste by filtration.

[0073] Step 2: Prepare the liquid metal alloy, h...

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Abstract

The invention provides colored liquid metal printing ink. The printing ink is prepared from, in percentage by weight, 40%-70% of liquid metal, 2%-10% of pigment, 10%-30% of a wettability improver, 1%-5% of a dispersant, 0.5%-3% of a coupling agent, 1%-10% of a binder, 0.5%-3% of an adhesion promoter, 1%-5% of a solvent and the balance of other aids, wherein the liquid metal is a conductive nanofluid formed by low-melting-point metal or alloy or metal nanoparticles with the melting point being 300 DEG C or below and a fluid dispersant. The concept and the preparation method of the colored liquid metal printing ink are proposed for the first time, the existing application method that pigment powder is directly adopted in liquid metal is changed, color paste rather than pigment is adopted to provide colors for the liquid metal, and the color saturation and stability of a colored liquid metal composite are further improved, so that the composite has both good conductivity of liquid metal and rich colors of pigment.

Description

technical field [0001] The invention belongs to the technical field of printing materials, in particular to a printing ink containing liquid metal and a preparation method thereof. Background technique [0002] Printing techniques include screen printing, letterpress printing, flexographic printing, gravure printing, and offset printing, among others. Printing with conductive ink is one of the important methods to achieve large-area size, fast, low-cost, and high-efficiency processing of circuit patterns, because it does not produce a lot of waste liquid like the etching process, and is considered to be a more environmentally friendly, greener, and more Material-saving technology. Printing with ink can realize mass production, and the scrap rate is relatively low, and the product performance is stable. It is the preferred process for various electronic devices. Printing technology can not only meet the requirements of preparing circuits on traditional rigid materials, but ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D11/52C09D11/03
CPCC09D11/03C09D11/52
Inventor 汪鸿章董仕晋刘尚娟武小玲于洋刘静
Owner BEIJING DREAM INK TECH CO LTD
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