Printing electric heating membrane calandria based on vitrified enamel plate and preparation technique thereof

An electric heating film and heating body technology, which is applied in ohmic resistance heating, ohmic resistance heating parts, electric heating devices, etc., can solve the problems that hinder the popularization and application of electric heating films, low thermal conductivity of substrate materials, and high cost of electric heating film materials. The effect of strong thermal shock resistance, good safety performance and high mechanical strength

Inactive Publication Date: 2008-10-01
宁波市塞纳电热电器有限公司
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Problems solved by technology

[0005] However, the traditional electrothermal film substrate materials are mostly brittle materials such as glass and ceramics, which are difficult to install; the thermal conductivity of the substrate material is low, so the power density is low; the resistivity of the conductive component of the film layer is high, in order to reduce the resistance of the resistance layer To increase the power, it has to inc

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  • Printing electric heating membrane calandria based on vitrified enamel plate and preparation technique thereof

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Embodiment Construction

[0034] Choose 0.8mm thick enamel steel plate with a size of 550mm×310mm. After processing the process hole, spray enamel glaze on both sides, and then sinter at a temperature of 850-900°C to form an enamel plate.

[0035] Preparation of glass powder: Select 68% bismuth oxide, 14% silicon oxide, 4% boron oxide, 1% aluminum oxide and 13% zinc oxide according to the mass ratio, mix them evenly and then smelt and quench them in water. The melting temperature is 1500°C. Glass powder with an average particle size of 3 μm was obtained by ball milling.

[0036] Preparation of medium slurry: put glass powder and organic binder in a container in a mass ratio of 80%:20%, stir and disperse, then perform three-roll rolling, and then undergo vacuum defoaming treatment to obtain a slurry that can be used for screen printing media slurry.

[0037] Prepare resistance paste: put glass powder, ultra-fine silver powder, ultra-fine palladium powder and resistance binder in a mass ratio of 36%: 39...

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Abstract

The present invention provides a printing electrothermal film heating body based on an enamelled steel sheet, and its preparation technology, the heating body is composed of an enamelled steel sheet, a dielectric layer, a resistance layer, an electrode layer and a covering layer of the electrothermal film surface, the enamelled steel sheet is composed of a steel sheet and an enamelled steel layer of its surface, the dielectric layer, the resistance layer, the electrode layer and the covering layer are obtained by printing, drying, sintering of dielectric paste, resistor paste, electrode paste and dielectric paste, the dielectric paste is rolled by glass powder and organic adhesive, the resistor paste is rolled by glass powder, ultrafine silver powder, ultrafine palladium powder and resistor adhesive, the electrode paste is rolled by glass powder, ultrafine silver powder, flake silver powder and resistor adhesive, the glass powder is composed of bismuth oxide, silica, boron oxide, alumina, zinc oxide. The heating body has advantages of low cost, quick heat, warming-up, high heat efficiency and high mechanical strength etc.

Description

Technical field: [0001] The invention relates to a printed electric heating film heating body based on an enamel plate and its preparation technology, that is, the dielectric paste, resistance paste and electrode paste are printed on the enamel of the enamel plate by a screen printing process to form an electric heating film pattern, and sintered Curing to form a heating body that can generate electricity and generate heat. The invention also relates to the ingredient formulation and preparation technology of the dielectric slurry, resistance slurry and electrode slurry suitable for the enamel plate, and the interlayer structure design and preparation technology of the electrothermal film. Background technique: [0002] Electric heating film is an important category of electric heating elements. It is a new type of electric heating element that has developed rapidly in recent years. It can be applied to almost all medium and low temperature electric heating fields, especiall...

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Application Information

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IPC IPC(8): H05B3/22H05B3/10H05B3/03
Inventor 林建江堵永国章国庆张为军蔡建立
Owner 宁波市塞纳电热电器有限公司
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