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Carbon-system far-infrared radiation electric hot plate and manufacturing method thereof

A technology of far-infrared radiation and electric heating plate, applied in the direction of electric heating device, ohmic resistance heating, ohmic resistance heating parts, etc. Poor heat dissipation and other problems, to achieve good far-infrared radiation effect, good electrical conductivity, good thermal insulation effect

Active Publication Date: 2018-09-25
广州东铝轻合金有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These electrothermal film products have the following problems: 1. The electrothermal coating or slurry is in a fluid state, has strong fluidity, cannot be formed by itself, and cannot be used alone. It must be used on a polymer substrate, which has low strength and poor flame retardancy. , which is not conducive to safety and fire prevention; 2. Electrothermal coating or slurry is covered on the polymer film, and the heat dissipation of the polymer film itself is poor, which affects the conductive heating and infrared radiation effect of the electrothermal material, resulting in waste of electric energy; 3. Electrothermal coating or electrothermal paste The thickness of the material coated on the polymer film is relatively thin, on the order of microns, and does not have the heat storage function. The heat will be dissipated immediately when the power is turned off, which will affect the stability of the heating temperature; Use under high voltage has certain safety hazards

Method used

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  • Carbon-system far-infrared radiation electric hot plate and manufacturing method thereof
  • Carbon-system far-infrared radiation electric hot plate and manufacturing method thereof
  • Carbon-system far-infrared radiation electric hot plate and manufacturing method thereof

Examples

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Effect test

Embodiment 1

[0042] The carbon-based far-infrared radiation electric heating plate of the present invention mainly includes a substrate, and the thickness of the substrate is generally 5-30 mm. The substrate can be made into different shapes as needed, such as rectangular, square, circular, elliptical, irregular, etc. There may be patterns on the substrate, or there may be no patterns. The size of the substrate can be adjusted as needed. Positive and negative electrodes are provided inside the substrate, and the positive and negative electrodes are located on the same plane perpendicular to the thickness, preferably at 1 / 2 of the thickness of the substrate, and wires are provided on the positive and negative electrodes. The outer layer of the substrate can be further wrapped with an insulating layer or / and a protective layer as an intermediate layer. For example, only the insulating layer can be wrapped on the outer layer of the substrate, or only the protective layer can be wrapped on the...

Embodiment 2

[0047] The structure of the electric heating plate is the same as in Example 1. The substrate is made of a carbon-based far-infrared radiation electric heating composition. The amount of each raw material is 20 parts by weight of graphene, 30 parts of carbon black, 8 parts of conductive fiber, 60 parts of composite ceramic powder, and 50 parts of binding agent. The conductive fiber is graphite fiber, the composite ceramic powder is a mixture of corundum, quartz, titanium dioxide and limestone, and the binder is epoxy resin.

[0048] The preparation method is as follows:

[0049] 1. Add graphite fiber with corundum (100 microns) grinding media for ball milling, the number of ball milling revolutions is 200 revolutions / min, and the time is 1 hour.

[0050] 2. Wash the ball-milled graphite fiber with distilled water for later use; add KH550 to distilled water to prepare a 3vol.% silane coupling agent solution, adjust the pH of the solution to 4, add graphite fiber and graphene to the s...

Embodiment 3

[0058] The structure of the electric heating plate is the same as in Example 1. The substrate is made of a carbon-based far-infrared radiation electric heating composition. The amount of each raw material is 15 parts by weight of graphene, 10 parts of carbon black, 6 parts of conductive fiber, 50 parts of composite ceramic powder, and 35 parts of binding agent. The conductive fiber is graphite fiber, the composite ceramic powder is a mixture of corundum, quartz, titanium dioxide and limestone, and the binder is phenolic resin.

[0059] The preparation method is as follows:

[0060] 1. Add graphite fiber with titanium dioxide (20 microns) grinding media for ball milling, the number of ball milling revolutions is 200 revolutions / min, and the time is 1 hour.

[0061] 2. Wash the ball-milled graphite fiber with distilled water for later use; add KH550 to distilled water to prepare a silane coupling agent solution with a concentration of 3vol.%, adjust the pH of the solution to 6, add gr...

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Abstract

The invention discloses a carbon-system far-infrared radiation electric hot plate and a manufacturing method thereof. The electric hot plate comprises a carbon-system far-infrared radiant electric hotsubstrate. The substrate is made of a carbon-system far-infrared radiant electric hot composition. The carbon-system far-infrared radiant electric hot composition comprises a carbon-system three-dimensional conductive network body, a composite ceramic powder and a binder. The carbon-system three-dimensional conductive network body is formed by a conductive fiber whose surface is grafted with graphene and carbon black whose surface is grafted with acrylamide through electrostatic adsorption. The electric hot plate possesses a high far-infrared radiation effect and a high release negative ion effect. An infrared radiation wavelength is 8-10nm and the wavelength is similar to an organism. The conductivity of the electric hot plate is good, and the electric hot plate has a high electro-thermal conversion rate, a small resistance, a fast temperature rise speed, a high heat storage capability and good heat dissipation performance, and can be used under a 36V voltage. A good heating effect is reached and safety is high. Besides, the electric hot plate has excellent characteristics of flame retardance, acid resistance, alkali resistance, antibacterial mould prevention, ageing resistance,environmental protection, decorativeness and the like.

Description

[0001] The invention relates to a carbon-based far-infrared radiation electric heating paint, an electric heating plate made of the carbon-based far-infrared radiation electric heating paint and a preparation method thereof, and belongs to the technical field of electric heating products. Background technique [0002] With the implementation of the electric energy substitution plan, electric heating products have received increasing attention. At present, the development of electric heating products is just in its infancy, with a single product form, mainly electric heating film products. For example, the patent CN201710462979 discloses a composition for a water-based electric heating coating, a water-based electric heating coating and a preparation method thereof. The patent uses carbon nanotubes, graphene and nano carbon black as main components to prepare electric heating film products. Patent CN201510627276 discloses a preparation method of graphene modified and enhanced far-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B3/20H05B3/14H05B3/03
CPCH05B3/03H05B3/145H05B3/20
Inventor 冷金凤王康
Owner 广州东铝轻合金有限公司
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