Electric heating electric heating plate and preparation method thereof
An electric heating plate, electric heating technology, applied in electric heating devices, ohmic resistance electrodes, ohmic resistance heating and other directions, can solve the problems of low conductivity of carbon crystal powder, shortened life of film layer, low degree of graphitization, etc., to reduce energy consumption , The effect of reducing brittleness and high safety performance
Inactive Publication Date: 2019-04-05
北京华遵科技有限公司
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Problems solved by technology
[0005] 1. The conductivity of carbon crystal powder is low, the degree of graphitization is low, and there are many impurities
Leads to poor electrical conductivity in the binder
[0006] 2. Carbon crystal powder is a mixture of thick graphite flakes and granular carbon black. After a period of time, the attenuation is serious and the service life is short.
[0007] 3. The bonding material for epoxy resin board printing is epoxy resin, which is brittle and easily causes the film to break, and the life of the film is reduced, resulting in a decline in product quality.
[0008] 4. Medium temperature (160°C), long time (30min) baking, long time, high energy consumption
Method used
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Embodiment 1
[0045] Step (1) Preparation of conductive carbon color paste
[0046] Get 20 parts of graphene slurry (5% graphene slurry prepared by intercalation method), 10 parts of modified carbon fiber short-fiber powder (2-4 μ m in particle size), 20 parts of carbon crystal powder (graphite sheet class carbon crystal powder and carbon The mass ratio of black carbon crystal powder is 2:1), 10 parts of dispersant (BYK-161), 40 parts of solvent (DMF, acetone, DBE mixing ratio 3:3:4) were added to a 20L planetary mixer in sequence, and the In the stirring state, turn on the cooling water circulation (temperature is 20-35° C.), stir at 20 rpm for 30 minutes, and disperse at a high speed of 8000 rpm for 30 minutes to obtain a carbon mixture. The diaphragm is pumped to a homogenizer for high-speed grinding and shearing for 20 minutes to obtain a conductive carbon color paste with a particle size of ≤20 μm.
[0047] Step (2) preparation of conductive carbon ink
[0048]
[0049] Among them...
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Abstract
The invention discloses an electric heating electric heating plate and a preparation method thereof. The preparation method comprises the steps of: (1) uniformly stirring the graphene slurry, the modified carbon fiber short fiber powder, the carbon crystal powder, a dispersing agent and a solvent according to a certain ratio, and then grinding the mixture to obtain a conductive carbon color paste;(2) uniformly mixing the conductive carbon color paste, thermoplastic resin, thermosetting resin, a curing agent, a dispersant, a defoamer, a leveling agent, an inorganic filler and a solvent to obtain conductive carbon ink; (3) performing silk-screen printing of the conductive carbon ink at the surface of the epoxy fiberglass cloth, printing the conductive carbon ink, sticking a copper strip, transmitting the epoxy fiberglass cloth into an oven for baking, performing hot-pressing of an epoxy prepreg, and performing the wiring process to obtain an electric heating electric heating plate. Theelectric heating electric heating plate is high in conductivity, uniform in heating and high in safety, and the preparation method is simple, low in energy consumption and low in cost.
Description
technical field [0001] The invention belongs to the technical field of electric heating plates, in particular to an electric heating electric heating plate and a preparation method thereof. Background technique [0002] At present, the main heating method in northern my country is to burn coal for direct or indirect heating, but the carbon dioxide, dust and other pollutants produced during the coal combustion process will cause serious air pollution. The problem is becoming more and more prominent. With the energy reform, the introduction of the policy of replacing coal with electricity has promoted the development of electric heating. [0003] Electrothermal materials refer to the materials used to manufacture electric heating elements in various resistance heating equipment. At present, there are existing electric heating materials, such as carbon crystal electric heating materials. The preparation process of the conventional carbon crystal electric heating plate include...
Claims
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IPC IPC(8): H05B3/14H05B3/02H05B3/03B41M1/12B41M1/34
CPCB41M1/12B41M1/34H05B3/02H05B3/03H05B3/145
Inventor 焦鹏飞徐雷雷王松杜永红
Owner 北京华遵科技有限公司