"Family" in the home heating, electric heater electric film mica fever tablets, has been popular in the market at home and abroad for many years, and has always been the favorite of consumers. For this type of electric heater, its heart is the electric film mica fever tablets can also be referred to as the core technology. What electric film mica fever tablets what? What classification? The following highlights.

In fact, due to the electric heater sought after by the market and the world face to be shipped spawned a variety of electric film the mica fever tablets, dubbed "electric film mica fever tablets are a variety of heating elements manufacturer, resulting in a good and the bad, the fish in the situation, certain misleading to consumers and application of the finished product manufacturers, and even caused some misunderstanding on the electric membrane technology
1) winding alloy heating wire electric film

Since its introduction in 1893, the widely used since the more traditional heating methods. Because electric wire linear heat source, heat smaller thermal radiation wave form of a three-dimensional diffusion part of the electrical energy into light, strong open flames. Based on the energy conservation law, the energy conversion efficiency of only 60% -70%. The temperature rise of up to 1100 ° C, the heating wire is easy to break, poor seismic performance.

Heating wire is pressure, extension, pull, stretch way made of electric wire, electric rods, hot plate, Heater, but can not use power arbitrarily cut. The heating wire production technology has been very mature, supporting the production of household appliances, mostly low-end products, low competitiveness. Some electric wire supporting household appliances, has been difficult to enter the high-end market in Europe and America.

(2) carbon film mica heating plate

Carbon films belong to the same category of electric film, organic opaque electric film. Constitute another polymer organic electric film heating film and add electric film. More practical application is the use in the addition of carbon black, graphite or a mixture of the two film-forming substances, commonly known as black film. The process of the film by coating, and screen printing is commonly used. Most electric film forming carrier, and use require the application of more carrier materials are glass, ceramics and mica.

Carbon film mica electric board has the following disadvantages:

1. Physical safety performance hazards. The black film production process is the coating, and screen printing the surface of the insulating substrate, electric film is the thickest one, the thickness of 0.3-0.5 mm. The film and mica layer at the heat expansion coefficient, after repeated heating and cooling, and ultimately between the film and the mica substrate to form a bubble layer, resulting in the easy to fall off of the film.

Power density can not be bigger, the high cost of the whole cost. The monolithic power density is generally less than 0.5W per square centimeter, the surface temperature can only reach 200 degrees, which require manufacturers to do the high-power heater Dimensions have to do great increase in cost.

Tin oxide electric film mica heating plate

Tin oxide conductive film is coated with the surface of the composite sintered and conductive coatings processing, in the vapor state, sintered tin oxide high temperature splashing and composite processing is made.

Electrothermal film of tin oxide mica heating plate. Tin oxide is sintered and cloud motherboard, the current is flowing through the tin oxide layer and fever, but the characteristics of the mica sheet mica fine crystal organization glue structure, not being are tight, low ductility and toughness, loose, especially with the constant expansion and contraction, form a slight gap between the mica fine crystal organization, these slight gap on the current circulation is a great obstacle, a direct result of burnout .