Carbon nano tube composite carbon crystal paint and method for preparing carbon crystal electric heating material from same

A carbon nanotube composite and composite coating technology, used in heating element materials, electric heating devices, polyester coatings, etc., can solve the problems of cumbersome methods, difficult to obtain large size, high cost, low equipment requirements, and electrothermal conversion. High efficiency and small surface temperature difference

Inactive Publication Date: 2010-12-15
龚亮 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although in recent years, the production and research and development of carbon crystal electrothermal materials have made great progress, but the preparation method mainly adopts the technology of pulping and papermaking by mixing short carbon fibers and pulp, which is cumbersome and costly. In addition, the prepared The width of carbon crystal electrothermal materials is narrow, generally no more than 600mm, and it is difficult to obtain large sizes

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1) Preparation of carbon crystal composite coatings containing carbon nanotubes: select single-walled carbon nanotubes with a diameter of 2 to 4 nm and a length of 10 to 20 μm, select carbon fibers as polyacrylonitrile-based, T300 series, and have a fiber length of 1 to 20 μm. 5mm, without glue. Soak carbon nanotubes and short carbon fibers in the prepared alcohol for 1 hour respectively, then put the above raw materials into clean containers respectively, and dry them at 80°C. The short carbon fiber is pulverized in a high-energy ball mill to obtain short carbon fiber powder with a relatively uniform length of 2-5 μm. Proportional carbon nanotube content 2% adds short carbon fiber powder, adds 1% surfactant hexadecyltrimethylammonium bromide, carbon nanotube and the short carbon fiber powder of gained are mixed in the blender to obtain carbon Vegetarian crystal powder. Dilute the resin coating with acetone, add the above-mentioned mixed carbon crystal powder and inf...

Embodiment 2

[0021] (1) Preparation of the carbon crystal composite coating containing carbon nanotubes: with embodiment 1;

[0022] (2) Preparation of carbon crystal electric heating material: select a polypropylene film of appropriate size, and use a spraying machine to evenly spray the prepared carbon crystal composite coating on the template. The foil is pasted on the coating as the lead-in electrode, and the planar heating element is obtained after the coating is cured. On the top and bottom of the obtained planar heating element, 3 layers of polypropylene film were laid simultaneously, and compositely pressed at 180° C., 6 MPa, for 1 hour to obtain the final carbon crystal electrothermal material.

Embodiment 3

[0024] (1) Preparation of the carbon crystal composite coating containing carbon nanotubes: with embodiment 1;

[0025] (2) Preparation of carbon crystal electric heating material: select a nitrile rubber sheet of appropriate size, and use a spraying machine to evenly spray the prepared carbon crystal composite coating on the template. The copper foil is pasted on the coating as the lead-in electrode, and the planar heating element is obtained after the coating is cured. On the top and bottom of the obtained planar heating element, two layers of nitrile rubber were laid at the same time, and compositely pressed at 145° C., 4 MPa, and 0.5 hours to obtain the final carbon crystal electric heating material.

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Abstract

The invention discloses a carbon nano tube composite carbon crystal paint and a method for preparing a carbon crystal electric heating material from the same, wherein the carbon crystal composite paint is prepared from carbon nano tubes, modified ball milling short carbon fibers, resin paints, infrared emission powder and the like; and the carbon crystal electric heating material is prepared by spraying or scratching the paint into a film on a planar template (paper base template, plastic template and the like), and compositing with an aging proof high molecular material to obtain the planar electric heating material. The carbon crystal composite paint and the carbon crystal electric heating material have strong far-infrared radiation, high electric heating conversion efficiency, small surface temperature difference, good corrosion resistance, weather resistance and aging resistance and high safety, can be compatible with concrete, can be used as a heating product for buildings, and can also be processed into various electric heating products, such as an electric heating plate, an electric heating carpet, a dry wardrobe, a foot warmer, a food warmer and the like.

Description

Technical field: [0001] The invention relates to a carbon crystal composite coating containing carbon nanotubes and a method for preparing a carbon crystal electrothermal material from the composite coating, in particular to a method for preparing a carbon crystal electrothermal material used for floor heating and electric heating plates. Background technique: [0002] As a one-dimensional nanomaterial, carbon nanotubes have excellent mechanical, electrical, and chemical properties, especially carbon nanotubes have a very large aspect ratio, and are easy to form a conductive network in composite materials, greatly improving electrical and thermal conductivity. In recent years, with the advancement of technology, there have been a large number of reports on the application of carbon nanotubes in conductive coatings and stealth absorbing coatings. Carbon fiber is also a high-performance one-dimensional material with good thermal conductivity, electrical conductivity and chemic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D201/00C09D167/08C09D133/00C09D161/20C09D163/00C09D175/04C09D7/12H05B3/14H05B3/20
CPCY02P20/10
Inventor 龚亮唐谊平
Owner 龚亮
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