Electric heating film, electric heating plate and corresponding manufacturing methods

A manufacturing method and electrothermal film technology, applied in the direction of electrothermal devices, ohmic resistance heating, electrical components, etc., can solve the problems of long warm-up time, low electrothermal conversion efficiency, short service life, etc., and achieve high electrothermal conversion efficiency, that is, heat capacity Small, long-lasting effect

Active Publication Date: 2015-07-15
CHENGDU YANGZHONG NEW ENERGY TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the filamentary or linear shape used in the electric heating film used at home and abroad and the heating element of the electric heating element used in the traditional electric heating appliance, resulting in a small heating area, slow heat exchange, and preheating. Long time, very uneven heating, red and luminous heating body, electromagnetic radiation, low electrothermal conversion efficiency, high energy consumption, easy oxidation of metal heating, fast power attenuation, low insulation level, short service life and many other shortcomings. The invention provides an electric heating film, an electric heating plate and a corresponding manufacturing method

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  • Electric heating film, electric heating plate and corresponding manufacturing methods
  • Electric heating film, electric heating plate and corresponding manufacturing methods
  • Electric heating film, electric heating plate and corresponding manufacturing methods

Examples

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Embodiment 1

[0026] An electrothermal film, comprising a base material 6 for carrying and insulation, and a heat-generating coating applied on the base material 6, the heat-generating coating comprises an adhesive and a carbon heat-generating material, and the carbon heat-generating material is Carbon powder with a mesh number between 5000 and 10000 meshes, the carbon powder is made by mixing carbon black powder and graphite powder, and the mass ratio of the carbon black powder and graphite powder is between 1:1 to 1:4 between.

[0027] In this embodiment, the heating material is carbon-based and preferably a mixture of carbon black and graphite. The reason is that the resistance of carbon black usually has a positive temperature coefficient, and the surface graphite usually has a negative temperature coefficient below 700°C. Mixing in a ratio of 1:1 to 1:4 can keep the temperature coefficient of the heating film of the carbon heating material with different powers within an appropriate ra...

Embodiment 2

[0030] This embodiment provides a manufacturing method for the electrothermal film described in Embodiment 1, such as figure 2 As shown, the manufacturing method includes the following steps performed in sequence:

[0031] A, batching step: mix carbon black powder and graphite powder according to the ratio of mass parts between 1:1 and 1:4 to obtain powder;

[0032] B, pulverizing step: above-mentioned powder material is pulverized to between 5,000 to 10,000 meshes to obtain ultrafine powder;

[0033] C, uniform mixing step: after adding viscose to above-mentioned ultrafine powder, uniform mixing obtains heating coating slurry;

[0034] D. Coating and baking step: coating the heating coating slurry on the substrate 6 and baking the heating coating slurry to obtain the electric heating film 5 .

[0035] As a preferred measure of the manufacturing method, in step C, it also includes adding isopropyl alcohol and anhydrous ethanol to the ultrafine powder and mixing them uniform...

Embodiment 3

[0038] This embodiment is further limited on the basis of Embodiment 1. As a further preferred limitation on the components of the electrothermal film, the heat-generating coating further includes fillers and stabilizers. The fillers, stabilizers, adhesives, and carbon heat-generating materials Mix uniformly, the filler is one or more of talc powder, titanium dioxide powder, silica powder, muscovite powder, sericite powder, ore powder; the adhesive agent is inorganic adhesive agent, organic adhesive agent , one or more of organic silicon adhesive and organic fluorine adhesive; the stabilizer is one or more of heat stabilizer, antioxidant, coupling agent and cross-linking agent.

[0039] The adhesive is a silicone adhesive, and the mass ratio of the adhesive to the carbon heating material is between 1:2 and 1:3; the filler is talcum powder, and the mass ratio of the filler to the carbon heating material is between 1:2 and 1:3; The ratio is not greater than 10; the stabilizer is...

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Abstract

The invention discloses an electric heating film, an electric heating plate and corresponding manufacturing methods. The electric heating film comprises a substrate and a heating coating, wherein the heating coating comprises an adhesive and a carbon heating material; the carbon heating material is the mixture of carbon black power and graphite powder. Moreover, the invention discloses an electric heating plate using the electric heating film, and manufacturing methods for the electric heating film and the electric heating plate. The electric heating film and the electric heating plate, obtained by the manufacturing methods, are very uniform in heating, free from electromagnetic radiation and harmless to humans, emits no visible light at a temperature of below 500 DEG C and is very high in electricity-heat conversion efficiency; because the heating body is made of a carbon powder material and cannot be oxidized by the oxygen in the air, the service life is long; according to the electric heating film obtained according to the formula and the electric heating plate containing the electric heating film, under the condition of meeting the using power, heat is emitted from a surface and the electric heating film and the electric heating plate are very thin and very small in mass, and the instantaneous heating capacity is very small, so that heating is fast, and the purpose of plugging and heating is achieved.

Description

technical field [0001] The invention relates to the technical field of electric heating, in particular to an electric heating film, an electric heating plate and a corresponding manufacturing method. Background technique [0002] Electric heating film is an emerging electric heating element in recent years. The base material is usually PET special polyester film or other organic films or organic sheets. The heating element is an ink wire or a thin electric heating wire or a thin carbon fiber wire, and the electrode group is a metal current-carrying strip. The heating element of the electric heating film is laid on the base material at intervals, and the two ends are connected to the electrode group to form a plurality of resistance wires in parallel or in series, and the electric heating film with wire heating is formed after being energized. This kind of electric heating film has a lower heating temperature and a narrower temperature range. For example, many of the po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B3/38
Inventor 李杨忠
Owner CHENGDU YANGZHONG NEW ENERGY TECH
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