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Carbon nanotube ultra-black coating and preparation method thereof

A technology of carbon nanotubes and coatings, which is applied in the field of carbon nanotube ultra-black coatings and its preparation, can solve the problems of high reflectivity of ultra-black coatings, and achieve the effects of increasing black chroma, improving flexibility, and increasing absorbance

Active Publication Date: 2020-12-01
SHENZHEN XIWAN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of this application is to provide a carbon nanotube ultra-black coating and its preparation method, aiming to solve the problem that the reflectivity of existing ultra-black coatings with carbon black as black pigment is still high

Method used

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  • Carbon nanotube ultra-black coating and preparation method thereof
  • Carbon nanotube ultra-black coating and preparation method thereof
  • Carbon nanotube ultra-black coating and preparation method thereof

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preparation example Construction

[0045] The first aspect of the present application provides a method for preparing a carbon nanotube super black coating, the method may further comprise the steps:

[0046] S01. Carbon black is dispersed in the first dispersion liquid of the first dispersant, organic auxiliary agent and deionized water to obtain the first mixed system, and the first mixed system is mechanically ground to obtain the carbon black dispersion liquid, wherein, the first mixed system A dispersant is an aqueous dispersion resin;

[0047] S02. Configure the second dispersion liquid mixed with the second dispersant and deionized water, and disperse the carbon nanotubes in the second dispersion liquid to obtain the second mixed system. After the second mixed system is ground, add deionized Diluted with water to obtain a carbon nanotube dispersion;

[0048] S03. Mixing the carbon black dispersion and the carbon nanotube dispersion to obtain a carbon nanotube super black coating.

[0049] The preparati...

Embodiment 1

[0095] A preparation method of carbon nanotube ultra-black paint, comprising the following steps:

[0096] (1) Add 40g water-based polyacrylate, 5g ethylene glycol into 10g deionized water and stir to obtain the first dispersion liquid, add 6g carbon black in batches to the first dispersion liquid and stir and mix, the obtained first dispersion liquid The mixed system was sand milled and dispersed for 5 hours.

[0097] (2) 10g sodium hydroxymethyl cellulose is added into 9g water to carry out dispersion treatment to obtain the second dispersion liquid, disperse treatment after adding 0.6g carbon nanotubes in the second dispersion liquid, obtain the second mixed system, the second mixed system Grind under a three-roll mill, add 5 g of water and stir evenly to form a carbon nanotube dispersion. Wherein, the method for grinding the second mixed system under the three-roll mill is as follows: the roller gap of the three-roll mill is adjusted to be 20 μm, and the three-roll mill i...

Embodiment 2

[0100] A preparation method of carbon nanotube ultra-black paint, comprising the following steps:

[0101] (1) Add 40g water-based polyacrylate, 5g ethylene glycol into 10g deionized water and stir to obtain the first dispersion liquid, add 6g carbon black in batches to the first dispersion liquid and stir and mix, the obtained first dispersion liquid The mixed system was sand milled and dispersed for 5 hours.

[0102] (2) 10g sodium hydroxymethyl cellulose is added into 9g water and carry out dispersion treatment to obtain the second dispersion liquid, disperse treatment after adding 1g carbon nanotube in the second dispersion liquid, obtain the second mixing system, the second mixing system is in Grind under a three-roll mill, add 5 g of water and stir evenly to form a carbon nanotube dispersion. Wherein, the method for grinding the second mixed system under the three-roll mill is as follows: the roller gap of the three-roll mill is adjusted to be 20 μm, and the three-roll mi...

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Abstract

The invention relates to the technical field of coating materials, and provides a carbon nanotube ultra-black coating and a preparation method thereof. The preparation method of the carbon nanotube ultra-black coating provided by the invention comprises the following steps: dispersing carbon black in a first dispersion liquid containing a first dispersing agent, an organic auxiliary agent and deionized water to obtain a first mixed system, and mechanically grinding the first mixed system to obtain a carbon black dispersion liquid, wherein the first dispersing agent is aqueous dispersion resin,preparing a second dispersion liquid mixed with a second dispersant and deionized water, dispersing carbon nanotubes in the second dispersion liquid to obtain a second mixed system, grinding the second mixed system, adding deionized water for dilution to obtain a carbon nanotube dispersion liquid, and carrying out mixing treatment on the carbon black dispersion liquid and the carbon nanotube dispersion liquid to obtain the ultra-black coating. Compared with an ultra-black coating singly taking carbon black as a pigment, the reflectivity of the carbon nanotube ultra-black coating provided by the invention is reduced.

Description

technical field [0001] The application belongs to the technical field of coating materials, in particular to a carbon nanotube ultra-black coating and a preparation method thereof. Background technique [0002] Ultra-black materials, also called "invisible" materials, are a newly emerging "blackest" material. The ultra-black material only reflects 0.035% of the light, reaching a level that cannot be distinguished by the naked eye. It is as black as a black hole. This "super black" coating material is named "Vantablack". The emergence of ultra-black materials marks a major breakthrough in practical nanotechnology for optical instruments. In practical use, it can improve the sensitivity of optical instruments for use in astronomical cameras, telescopes, and infrared scanning systems. Its ability to reduce astigmatism will improve the "vision" of astronomical telescopes when viewing the faintest stars, and can be used for calibration. The camera for the oldest matter in the u...

Claims

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Application Information

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IPC IPC(8): C09D133/04C09D101/28C09D5/32C09D7/61
CPCC08K2201/003C08K2201/004C08K2201/011C09D5/32C09D133/04C09D7/61C09D7/66C08L1/284C08K3/041C08K3/04
Inventor 李昌林
Owner SHENZHEN XIWAN TECH CO LTD
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