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A kind of carbon black dispersion liquid and preparation method and application thereof

A dispersion liquid and carbon black technology, applied in the field of ink, can solve the problems that are not conducive to industrial production, affect the application of carbon black, and destroy the structure of carbon black, and achieve the effects of easy operation, small changes in viscosity and particle size, and clear text

Active Publication Date: 2021-06-11
深圳市墨库图文技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the introduction of strong oxidizing substances requires high equipment requirements, which is not conducive to industrial production
Moreover, oxidation modification will cause great damage to the structure of carbon black itself, which will affect the application of carbon black in ink.

Method used

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  • A kind of carbon black dispersion liquid and preparation method and application thereof

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preparation example Construction

[0028] Preferably, the preparation method of the carbon nanowires at least includes the following steps:

[0029] 1) Preparation of precursor carbon source

[0030] Dissolve 0.1 g of terephthalic acid in 100 mL of N,N-dimethylformamide solvent, maintain ultrasound and add 30 mL of concentrated ammonia water dropwise, and a white precipitate appears in the solution. The product was suction filtered, precipitated, and dried at 80°C to obtain the precursor carbon source.

[0031] 2) carbonization

[0032] Put the precursor carbon source prepared in step 1) into a quartz boat, raise the temperature up to 1500°C at a rate of 10°C / min, and carry out carbonization treatment in a constant temperature inert atmosphere at 1500°C, and lower the temperature of the tube furnace to room temperature. The product was taken out and dispersed in concentrated nitric acid, heated to boiling, refluxed for 5-40 h, and suction filtered to obtain the carbon nanowire material.

[0033] Concentrated...

Embodiment 1

[0065] Present embodiment 1 provides a kind of carbon black dispersion liquid, and described carbon black dispersion liquid, its raw material by weight, comprises:

[0066] 10 parts of carbon black modified by carbon nanowires;

[0067] 45 parts of solvent deionized water;

[0068] 0.5 part of additive benzoic acid;

[0069] The carbon nanowires are 0.1wt% of carbon black.

[0070] The average diameter of the carbon nanowires is 10-20nm, and the average length is 120nm.

[0071] The silane coupling agent is 3-aminopropyltriethoxysilane.

[0072] The preparation method of described carbon black dispersion liquid, comprises the following steps:

[0073] S1: Weigh 10 parts of carbon black modified by carbon nanowires, 0.5 parts of benzoic acid, and 45 parts of deionized water;

[0074] S2: adding 10 parts of carbon black modified by carbon nanowires into deionized water, and ultrasonicating for 30 minutes;

[0075] S3: Add 0.5 parts of benzoic acid at a rotational speed of ...

Embodiment 2

[0083] Present embodiment 2 provides a kind of carbon black dispersion liquid, and described carbon black dispersion liquid, its raw material by weight, comprises:

[0084] 10 parts of carbon black modified by carbon nanowires;

[0085] 75 parts of solvent deionized water;

[0086] 0.5 part of additive benzoic acid;

[0087] The carbon nanowires are 0.1wt% of carbon black.

[0088] The average diameter of the carbon nanowires is 10-20 nm, and the average length is 120 nm.

[0089] The silane coupling agent is 3-aminopropyltriethoxysilane.

[0090] The preparation method of described carbon black dispersion liquid, comprises the following steps:

[0091] S1: Weigh 10 parts of carbon black modified by carbon nanowires, 0.5 parts of benzoic acid, and 75 parts of deionized water;

[0092] S2: adding 10 parts of carbon black modified by carbon nanowires into deionized water, and ultrasonicating for 30 minutes;

[0093] S3: Add 0.5 parts of benzoic acid at a rotational speed o...

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Abstract

The invention relates to the field of ink, in particular to a carbon black dispersion and a preparation method thereof. The carbon black dispersion liquid at least includes carbon black modified by carbon nanowires, and the carbon nanowires are connected to the carbon black through a silane coupling agent. The surface of carbon nanowires is rich in acidic oxygen-containing groups, which can be easily dispersed in aqueous solvents. Moreover, the preparation process of the carbon black dispersion has mild conditions and will not damage the structure of the carbon black. The inkjet ink prepared by the method of the present invention is processed from the nano water-based carbon black dispersion liquid for inkjet. The inkjet ink is tested to print smoothly without clogging on the inkjet printer, and the printed text on ordinary copy paper is sharp and clear, which meets the requirements of thermal foaming printing. ink requirements.

Description

technical field [0001] The invention relates to the field of ink, in particular to a carbon black dispersion, a preparation method thereof and an ink containing the carbon black dispersion. Background technique [0002] Carbon black has excellent colorability, weather resistance and chemical stability, and is rich in sources. It is a very important black colorant, but the primary particle size of carbon black is small (10-500nm), the surface energy is high, and it is easy to aggregate into larger particles. It is difficult to stably disperse the particles in different systems, and these defects limit the full performance of carbon black. At present, the hydrophilic modification technology of carbon black mainly includes dispersant dispersion technology and oxidation modification technology. [0003] The dispersant dispersion technology is to make the dispersant adsorb on the surface of carbon black to charge it through the action of mechanical external force, and form a dou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D11/324
CPCC09D11/324
Inventor 叶门辉邱伟伟
Owner 深圳市墨库图文技术有限公司