One, from the appearance of the material: PET electric heating film is a transparent electric heating film, while the PI electric heating film belongs to the opaque electric heating film;
Two, the difference in temperature resistance: PET is a low-temperature electric heating film, can withstand a low temperature for a long time, the maximum temperature of the PET electric heating film temperature of up to 80 degrees Celsius! But for security reasons, this time the electric heating film must come with a thermostat, and PET electric heating film is generally made of electric heating film temperature of 50 ± 5 ℃; PI film for high-temperature electric heating film, can withstand long-term temperatures up to 250 ℃, but for security reasons, the PI electric heating film normal temperature is set to 120 ± 5 ℃.
PI heating film is made of polyimide (Polyimide, referred to as PI) material made of a kind of electric heating material. Polyimide is a high-performance engineering plastic with excellent properties such as high temperature resistance, corrosion resistance and radiation resistance, so it is widely used in high-temperature, high-pressure, high-precision industrial applications.
PI heating film is a polyimide material processed into a thin film and plated with a layer of metal lines on its surface to form the structure of a resistor, which can generate heat when energized. Due to the excellent performance of the PI material itself, PI heating film has the advantages of rapid warming, uniform heating, bendable, strong pressure resistance, etc. Therefore, it is widely used in the fields of industrial heating, electric heating equipment, medical equipment, automotive electronics, etc. More heating pads heating pads ：smxfrp
PET electric heating film is a thin heating pad, which is a thin heating pad that generates heat by encapsulating a metal resistance circuit in the middle of two layers of insulating PET through a special process. The heating film is largely different from the electric underfloor heating type of heating film.
PET heating film is suitable for low-temperature products, and its low price differs most from polyimide heating film and silicone rubber heating sheet. Let's go together to see what special advantages of PET heating film have special hotspots.
1, the use of high temperature, PET metal heating film element of the continuous working temperature is generally 100 degrees.
2, surface heating, high thermal efficiency, energy saving and power saving. Electric heating film is a surface heating material, which forms the maximum thermal conductive surface with the heated body, and this heating method has good electrical conductivity. Electric heating film itself is not too high temperature, no reddening and burning phenomenon, radiation heat loss is very small. Therefore, the thermal efficiency of the electric heating device made of electric heating film is high, generally around 90%.
3, long service life, the service life of the heating film heating element is 10 times the traditional electric wire heating element.
4, optional shape, wide range of use. Metal heating film thickness is generally about 0.25mm, can be made into a flat type, can also be made into a certain shape, can make the product miniaturization, lightweight, bookkeeping.
5, no open flame, safe and reliable. The heating membrane element is safe and reliable when heated. Low-voltage electric heating device made of heating film is used tightly, there is no danger of electric shock.
6, the heat branch circuit is arbitrary, not only can get uniform heat distribution, but also according to the need to arbitrarily design the circuit, so that the surface of the heat source to get different temperature distribution.
7, the circuit system is compact, and the metal heating film element can combine the rapid heating circuit, heat preservation circuit and temperature control circuit, so as to realize the automatic control of the electric heating element.
8, accurate temperature control, small thermal inertia, temperature control accuracy ± 2%.
9, easy installation and wiring. The wire can be fixed on the element by brazing or riveting, and the element can be pasted or mechanically fixed on the heating body.
To understand the knowledge of PET heating film, we can use it better. It is also inseparable from it in daily life. It is suitable for electric heating gloves, electric heating clothes, pet heating pads and some other low-temperature heating fields.