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A kind of water-based graphene/carbon nanotube composite electrothermal conversion ink and its preparation method

A carbon nanotube composite, water-based graphene technology, applied in inks, household appliances, applications, etc., can solve the problems of resin curing failure, increase in water content, difficult to increase solid content, etc., to improve conductivity uniformity, improve product quality, etc. efficiency, improve the effect of factory safety

Inactive Publication Date: 2018-10-09
安徽华惠福科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in this method, the temperature of the resin is too high (70-90°C) during the preparation of the dispersion, and there are common deficiencies such as resin curing failure at high temperature; if not treated at high temperature, the common different dispersions prepared separately have low solid content, and it is difficult to improve the solid content. content, resulting in an increase in water content, poor overall conductivity of the material, etc.; in the process of high-temperature concentration, common carbon materials have agglomeration phenomenon, especially the agglomeration of flake graphene materials into graphite; at the same time, the process of preparing the dispersion is tedious and expensive Larger capacity, economic adaptability and other issues

Method used

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  • A kind of water-based graphene/carbon nanotube composite electrothermal conversion ink and its preparation method
  • A kind of water-based graphene/carbon nanotube composite electrothermal conversion ink and its preparation method

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Experimental program
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Effect test

Embodiment 1

[0055] refer to figure 1 , a preparation method of water-based graphene / carbon nanotube composite electrothermal conversion ink, comprising the steps of:

[0056] S1, by weight 5 parts of graphene microsheets (carbon content greater than 99%, lateral size is 10-20 μm, graphene sheet thickness is 2.0-3.35nm), 1.25 parts of water-based nonionic low-polymerization polymer dispersant , 93.75 parts of water are automatically fed into the 500L stirring tank, the stirring paddle is turned on, the stirring speed is 200rpm, and the stirring time is 20min; The temperature is 25°C; the first dispersion is obtained after the dispersion is completed;

[0057] Wherein the graphene microflakes are one or more of graphene produced by gas phase plasma, graphene flakes produced by arc method, reduced graphene oxide, and graphene nanosheets;

[0058] S2. Put multi-walled carbon nanotubes (with a diameter of 0.1-50nm, an aspect ratio of 0.1-50, and a carbon content greater than 99%) in a strong...

Embodiment 2

[0062] S1, S2, S4 are identical with embodiment 1, and S3 changes into:

[0063] Automatically feed 2 parts of the second dispersion, 30 parts of water-based hydroxyl-modified nano-acrylic emulsion, 0.5 parts of sodium dodecylbenzenesulfonate and 33 parts of ultrapure water into the stirring tank by weight, and turn on the stirring paddle to stir The rotation speed is 200rpm, the stirring time is 20min, then add 30 parts of carbon black powder with a particle size of 50nm, 2 parts of water-based anionic dispersant, 2.5 parts of dimethylethanolamine, turn on the stirring paddle, the stirring speed is 200rpm, and the stirring time is 20min ; Then turn on the high-speed dispersion disc for high-speed dispersion, the dispersion speed is 1200rpm, the dispersion time is 20min, and the ambient temperature during the high-speed dispersion process is 25°C; after the dispersion is completed, filter to obtain the third dispersion.

Embodiment 3

[0065] S1, S2, S3 are identical with embodiment 1, and S4 changes into:

[0066] Mix 20 parts of the first dispersion, 50 parts of the third dispersion, and 30 parts of water-based resin in parts by weight, start stirring, the stirring speed is 200rpm, and the stirring time is 20min, then turn on the high-speed dispersion, the dispersion speed is 1200rpm, and the dispersion time is 20min; then grind until the particle size is 5μm, and the grinding speed is 800rpm; then add 0.2 parts of leveling agent, 0.2 parts of defoamer, 0.2 parts of pH regulator, 0.2 parts of preservative, 0.2 parts of anti-sedimentation agent and stir, and the stirring speed is 200rpm , the stirring time is 20min, and then the high-speed dispersion disc is turned on for high-speed dispersion. The dispersion speed is 1200rpm, the dispersion time is 20min, and the ambient temperature is 25°C during the high-speed dispersion process to obtain water-based graphene / carbon nanotube composite electrothermal conve...

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Abstract

The invention discloses water-based graphene / carbon nanotube composite electric-heating conversion printing ink and a preparation method thereof. The preparation method comprises the following steps: uniformly stirring a graphene microchip, a water-based non-ionic high-polymer dispersant and water, and then dispersing so as to obtain a first dispersion; putting one-dimensional nano-powder into inorganic strong acid, carrying out heating reflux, carrying out ultrasonic treatment, washing with water, and drying, so as to obtain a second dispersion; uniformly mixing the second dispersion with carbon black powder, a water-based anionic dispersant, sodium dodecyl benzene sulfonate, a water-based hydroxyl-modified nano-acrylic emulsion and dimethylethanolamine, and then dispersing so as to obtain a third dispersion; and mixing the first dispersion, the third dispersion and water-based resin, grinding, adding a flatting agent, a defoamer, a pH adjusting agent, a preservative and an anti-settling agent, and uniformly mixing, so as to obtain the water-based graphene / carbon nanotube composite electric-heating conversion printing ink. The invention further discloses the water-based graphene / carbon nanotube composite electric-heating conversion printing ink.

Description

technical field [0001] The invention relates to the technical field of electrothermal conversion ink, in particular to a water-based graphene / carbon nanotube composite electrothermal conversion ink and a preparation method thereof. Background technique [0002] In winter, the northern environment is mainly dry and cold. Conventional heating methods, especially boiler heating methods, are likely to cause air pollution and frequent smog. In recent years, the government has had to take a series of compulsory measures to dismantle a large number of highly polluting coal-fired boiler equipment in order to reduce the source of environmental pollution and alleviate the smog phenomenon in the north. At the same time, in order to improve the living environment of residents, the government has introduced corresponding subsidy policies, such as subsidies for installation costs and subsidies for electricity fees, to comprehensively promote and implement the "coal-to-electricity" transfo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D11/52C09D11/107C09D11/03
CPCC09D11/03C09D11/107C09D11/52
Inventor 王正标
Owner 安徽华惠福科技有限公司
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