Electrothermal film from the appearance of the division, there are transparent electrothermal film and opaque electrothermal film according to its substrate can be divided into organic electrothermal film and inorganic electrothermal film. The organic electrothermal film is composed of polymer electrothermal film and additive electrothermal film. At present, more practical applications are to add carbon black, graphite or a mixture of the two. Coating and screen printing are commonly used in film making. In the inorganic film, the transparent tin dioxide electrothermal film is the representative of the film forming process, such as thermal spray, vapor deposition and sputtering method. The inorganic electrothermal film based on superfine electrothermal alloy can be produced by screen printing process. Ceramic electrothermal film is the conductive material such as metal fine powder or toner added to ceramic or glass material, after drying fired into the film. Most of the electrothermal film and the use of the need for carrier carrier application of carrier materials are glass, ceramics and mica. The thickness of the electrothermal film is very thin, for example, tin oxide electrothermal filmElectrothermal film from the appearance of the division, there are transparent electrothermal film and opaque electrothermal film according to its substrate can be divided into organic electrothermal film and inorganic electrothermal film. The organic electrothermal film is composed of polymer electrothermal film and additive electrothermal film. At present, more practical applications are to add carbon black, graphite or a mixture of the two. Coating and screen printing are commonly used in film making. In the inorganic film, the transparent tin dioxide electrothermal film is the representative of the film forming process, such as thermal spray, vapor deposition and sputtering method. The inorganic electrothermal film based on superfine electrothermal alloy can be produced by screen printing process. Ceramic electrothermal film is the conductive material such as metal fine powder or toner added to ceramic or glass material, after drying fired into the film. Most of the electrothermal film and the use of the need for carrier carrier application of carrier materials are glass, ceramics and mica.The thickness of the electrothermal film is very thin.
Electrothermal foil is a kind of electrothermal material with slightly thicker thickness. For example, the electrothermal foil made of electrothermal alloy is 10-50um thick. A flexible electrothermal material is formed by sandwiching the metal foil between two layers of heat-resistant insulating material such as polyester film or polytetrafluoroethylene film. In addition, ultrafine electrothermal alloy powders are printed on pre-selected metal substrates that have been insulated and then sintered at high temperatures.
Electrothermal film and electrothermal foil have the following advantages: (1) surface heating efficiency is high;Electrothermal foil is a kind of electrothermal material with slightly thicker thickness. For example, the electrothermal foil made of electrothermal alloy is 10-50um thick. A flexible electrothermal material is formed by sandwiching the metal foil between two layers of heat-resistant insulating material such as polyester film or polytetrafluoroethylene film. In addition, ultrafine electrothermal alloy powders are printed on pre-selected metal substrates that have been insulated and then sintered at high temperatures.
Electrothermal film and electrothermal foil have the following advantages:
(1) surface heating efficiency is high;
(2) Safety without open fire;
(3) Good heating uniformity;
(4) Good corrosion resistance;
(5) The heating rate is fast;
Most electrothermal films have self-limiting temperature characteristics.
The electrothermal film composed of various elements is placed in the enamel surface as insulating material through chemical reduction reaction, and the electrothermal elements like the printed circuit can also be prepared directly. Another thick-film heating material, ceramic steel, is made of thin sheets of electrothermal alloy steel that are enamelled and sintered at high temperatures.
