Carbon-serial conductive coating with ultralow content of carbon tubes and preparation method thereof

A conductive coating and ultra-low carbon technology, applied in conductive coatings, coatings and other directions, can solve the problems of poor decorative performance of pigments, complicated preparation methods, and high carbon tube content, and achieve strong decorative performance, improve decorative performance, and carbon tube content. low effect

Active Publication Date: 2015-03-25
DONGFENG COMML VEHICLE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to overcome the defects and problems existing in the prior art, such as high carbon tube content, poor decorative performance of pigments, high production cost, and complicated preparation methods, and provide a decorative pigment with low carbon tube content. Ultra-low carbon tube content carbon-based conductive coating with strong performance, low production cost and simple preparation method and preparation method thereof

Method used

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  • Carbon-serial conductive coating with ultralow content of carbon tubes and preparation method thereof

Examples

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preparation example Construction

[0028] A preparation method of the above-mentioned ultra-low carbon tube content carbon-based conductive coating, the preparation method comprises the following steps in turn:

[0029] Primary dispersion: firstly add the carbon nanotube array to the base paint, then perform primary dispersion with primary high-speed dispersion equipment with ball milling media to obtain a primary dispersion, and then use a filter to filter out the ball milling media in the primary dispersion to obtain intermediate mixing Coating, the mass percent concentration of carbon nanotubes in the intermediate mixed coating is 0.5-1.5wt%;

[0030] Secondary dispersion: first add the above intermediate mixed paint into the base paint, and then use a secondary high-speed dispersion equipment with ball milling media for secondary dispersion to obtain a secondary dispersion, and then use a filter to filter out the ball milling in the secondary dispersion medium to obtain the conductive coating, the mass perc...

Embodiment 1

[0047] A preparation method of ultra-low carbon tube content carbon-based conductive paint, said preparation method comprising the following steps in sequence:

[0048] Primary dispersion: Add 0.5g of carbon nanotube arrays to 100g of basic paint, and disperse with a primary high-speed dispersion device with ball milling media to obtain a primary dispersion. The speed of the dispersion device is 2000rpm, and the dispersion time is 2h. The ball milling medium in the primary dispersion is filtered by a net to obtain an intermediate mixed coating, and the mass percentage concentration of carbon nanotubes in the intermediate mixed coating is 0.5wt%;

[0049] Secondary dispersion: first mix the above-mentioned intermediate mixed paint with 400g of the base paint, and then carry out secondary dispersion with a secondary high-speed dispersion equipment with ball milling media to obtain a secondary dispersion, and then use a filter to filter out the secondary dispersion The medium is ...

Embodiment 2

[0052] The basic content is the same as in Example 1, the difference is that in the secondary dispersion, the intermediate mixed paint is mixed with 317g of the base paint, and the mass percentage concentration of carbon nanotubes in the finally obtained conductive paint is 0.12wt%, and the paint film after spraying The sheet resistance is 3×10 8 Ω.

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Abstract

The invention relates to a carbon-serial conductive coating with ultralow content of carbon tubes. The coating comprises a basic coating and a conductive additive which is doped in the basic coating, wherein the conductive additive is a carbon nanotube array which is uniformly distributed in the basic coating; the mass percent concentration of the carbon nanotubes in the conductive coating is 0.1-0.5wt%; the surface resistance of a film formed by air-spraying the conductive coating is less than or equal to 10<9>ohm. The preparation method comprises the following steps: firstly, adding the carbon nanotube array into the basic coating for primary dispersion to obtain an intermediate mixed coating; then adding the intermediate mixed coating into the basic coating for secondary dispersion so as to obtain the conductive coating. The design provided by the invention can be applied to electrostatic spraying with relatively low content of carbon tube and relatively strong decorative performance of pigments, the carbon nanotube array is uniformly dispersed in the basic coating. The coating is simple in preparation method and relatively low in production cost.

Description

technical field [0001] The invention relates to a conductive coating and a preparation method thereof, in particular to a carbon-based conductive coating with an ultra-low carbon tube content and a preparation method thereof, which is particularly suitable for reducing the content of carbon tubes and improving the decorative performance of pigments on the basis of electrostatic spraying . Background technique [0002] Conductive coating refers to a functional coating that is coated on a non-conductive substrate to conduct current and eliminate static charge accumulation. According to different conductivity properties, conductive coatings can be divided into: coatings used as conductors, such as heating paint for heating in winter and anti-frost for automobile glass, anti-fouling coatings for ships; used as radiation shielding, such as radio wave, electromagnetic wave shielding; It can be used as antistatic coating, such as chemical plant floor, oil tanker inner wall, etc. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D7/12C09D5/24
CPCC09D5/24C09D7/80
Inventor 王睿李卫钟小华刘安心田小龙
Owner DONGFENG COMML VEHICLE CO LTD
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