According to incomplete statistics, there are currently more than a dozen products called electrothermal membranes. In addition to similar products with electrothermal membrane structures named under other names, there are more than 20 sub-level names for electrothermal membranes. Based on the characteristics of various electric heating films, the electric heating films are classified into four types: printing ink type, carbon fiber type, metal wire (sheet) type, and polymer conductive material type (hereinafter referred to as the quarter method). The "Low Temperature Radiation Electrothermal Film" standard divides electrothermal films into two types: metal-based and non-metal-based (hereinafter referred to as the dichotomy). Non-metal-based electrothermal films are further subdivided into carbon fibers, carbon-based inks and polymers. Level type.
There is no essential difference between the dichotomy method and the dichotomy method, but the dichotomy method uses a non-metal-based electric heating film as the first stage, and three other electric heating films except the metal-based one as its second stage, that is, the second stage. The dichotomy will weaken the position of the heating element material in the classification of the type is not necessarily the most scientific, and with the advancement of materials science and technology, the next type of non-metal-based electric heating film will continue to increase, and metal-based electric heating It is very unlikely that the film will be subdivided into the next level in the short term. This will cause serious imbalances in the two types of electrothermal film family members, that is, the non-metal-based electrothermal film has a large family and has reached the third generation, The fourth generation, and metal-based electric heating film still has only one member. Moreover, the dichotomy method is based on the national standard "Experimental Method of Infrared Radiant Heaters" (GB / T7287-2008). The infrared radiant heater method is used for electric heating films according to the radiant matrix classification. This may not be appropriate. It is also questionable by itself. For example, the "semiconductor heaters" in the non-metal-based infrared heater types obviously include "ceramic, enamel, high-silicon, zircon sand heaters", etc., and are listed as non-metallic. Why is it impossible for the base type "polyester film heater" to be a packaged metal-based heating material, that is, a "metal-based heater"
Except for the above-mentioned two-division method and the fourth-division method, most other electric heating film names are the names given by manufacturers to their products from different angles, and some of the electric heating films are covered with insulating materials to define the electric heating film, such as: polyimide Electric heating film, silicon (rubber) rubber heating film, mica heating film, PET heating film; some are defined by the power density of the heating film, such as low temperature, medium temperature, high temperature heating film; some define the heating film from the concept of radiant heat, such as: Radiant electric heating film, far-infrared electric heating film; some are called nano electric heating film and carbon nano electric heating film; others such as "ecological electric heating film" and "electric heating film" define the electric heating film from the environmental protection characteristics of the heating film and the application method of the floor heating. There are also called "silicon, carbon crystal electrothermal film" and the recent appearance of "high (super) carbon crystal electrothermal film", etc. It can basically be concluded that this type of electrothermal film should be a carbon fiber electrothermal film. If the subdivision type should also be Finally, the carbon fiber electric heating film is added after the attributive.
