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An infrared electric and hot film technology, applied in the direction of electric heating devices, ohmic resistance heating, electrical components, etc., can solve the problems of wasting electric energy, low heat conversion efficiency, uneven temperature distribution, etc., and achieve good ductility, low solid content, Effect of Uniformity Improvement
Inactive Publication Date: 2016-05-25
王宇 +1
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Problems solved by technology
[0003] However, the large-scale application of electrothermal film is still limited by the quality of the heating carbon paste
The existing heating carbon paste is mainly due to the uniform performance, which leads to uneven temperature distribution during heating, which affects the service life of the electrothermal film; and its heat conversion efficiency is low, wasting electric energy
Method used
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Embodiment 1
[0018] This embodiment provides a kind of exothermic carbon paste, its raw material formula includes the following components by weight:
[0019]
[0020] Wherein, the organic vehicle includes epoxy resin, polyurethane, acrylic resin and ethylene glycol oxalate, and their mass ratio is 10:8:15:40.
[0021] The production method of the heating carbon slurry is as follows: After fully mixing the above-mentioned raw material components, filter it with a 300-mesh filter cloth under a hydraulic environment, then fully grind it, and finally stir it to fully mix it. The carbon paste prepared by using this process formula and method has been well improved in terms of fineness and uniformity, and there will be no curling of the polyester film caused by excessive local temperature, which is conducive to improving the performance of the electric heating film. life. In addition, the carbon paste has PTC characteristics (that is, positive temperature coefficient characteristics). As it...
Embodiment 2
[0023] This embodiment provides a heating carbon slurry, which is roughly the same as the heating carbon slurry in Example 1, except that its raw material formula is:
[0024]
[0025] Wherein, the organic vehicle includes epoxy resin, polyurethane, acrylic resin and ethylene glycol oxalate, and their mass ratio is 20:15:20:60. In this embodiment, adding ethylene glycol butyl ether acetate (a coalescence aid) can promote the polymerization of the polymer material in the organic vehicle.
Embodiment 3
[0027] This embodiment provides a heating carbon slurry, which is roughly the same as the heating carbon slurry in Example 1, except that its raw material formula is:
[0028]
[0029] Wherein, the organic carrier includes epoxy resin, polyurethane, acrylic resin and ethylene glycol oxalate, and their mass ratio is 20:12:18:70.
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Abstract
The invention relates to heating carbon paste and a far-infrared electro-thermal film based on the heating carbon paste. The heating carbon paste comprises, by weight, 15-20 parts of carbon powder, 10-20 parts of graphite, 5-10 parts of calcium carbide powder, 35-70 parts of organic carriers and 1-5 parts of dispersing agents, wherein the organic carriers include epoxy resin, polyurethane, acrylic acid resin and diethyl ethanedioate. The far-infrared electro-thermal film based on the heating carbon paste comprises a basic film body, a heating carbon paste strip, at least two current-carrying strips and a polyester film body covering the current-carrying strips. The current-carrying strips are arranged in parallel at intervals, and the heating carbon paste strip is formed by coating the heating carbon paste. The heating carbon paste is formed by mixing the carbon powder, the graphite, the calcium carbide powder, the organic carriers and the dispersing agents in proportion, so that on one hand, the heating carbon paste has the advantage that solid content is low by means of the organic carriers composed of the epoxy resin, the polyurethane, the acrylic acid resin and the diethyl ethanedioate, fineness and uniformity are improved, and on the other hand, the heating carbon paste has good ductility and can be evenly coated.
Description
technical field [0001] The invention relates to an electric heating film, in particular to a far-infrared electric heating film. Background technique [0002] The electric heating film is a translucent polyester film that can generate heat after being energized. The surface material is polyester film. The ink line in the middle of the film is a heating carbon paste. Carbon slurry. Since the 1980s, with the resolution of problems such as technology and material costs, the application range of electrothermal film has become wider and wider, from electronics, medical care, to aerospace to agriculture, and has penetrated into almost all fields. The far-infrared electric heating film generates heat through carbon paste, and emits matching far-infrared bands, which has the effect of physical therapy on the human body; at the same time, its feature of being able to adjust the temperature at will can also give play to its advantages. Through temperature adjustment, energy waste can...
Claims
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Application Information
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