What is the difference between PI polyimide tape and PET high temperature tape? Which one is better?

PET high temperature tape has a temperature resistance of -40C° to 150 C°. Mainly used in electronics, automobiles, medical and other fields. The PI high-temperature tape is better in high temperature resistance, with a temperature resistance of -269 C° to 400C°. PI high-temperature tape may be a better choice. It has been widely used in aviation, aerospace, microelectronics,

The materials used by the two are different, their temperature resistance is also different, and their prices are also different.
PET high-temperature tape is made of PET film as the base material. PET, also known as polyethylene terephthalate, is the most important variety of thermoplastic polyester. Its English name is Polyethylene terephthalate, commonly known as polyester resin. It is a condensation polymer of terephthalic acid and ethylene glycol. Together with PBT, it is collectively called thermoplastic polyester, or saturated polyester. It has the characteristics of heat resistance and high temperature resistance, but the PET film cannot withstand ultra-high temperatures. It can withstand low temperatures of -40 degrees and high temperature resistance of about 100 degrees. If it exceeds 150 degrees, the PET high temperature tape will shrink and deform. PET high-temperature tape is mainly used in electronics, automobiles, medical and other fields. The pi high-temperature tape is superior in high temperature resistance and can withstand temperatures of -269 degrees or even 400 degrees. pi is also called polyimide (Polyimide). Its main chain contains imide groups (─C(O) ─N─C (O)─) polymer, so pi high temperature tape is also called polyimide high temperature tape. As a special engineering material, polyimide needs to use a higher temperature range in extreme high and low temperature environments. When bonding materials, PI high temperature tape may be a better choice. It has been widely used in aviation, aerospace, microelectronics, nanometer, liquid crystal, separation membrane, laser and other fields.
In recent years, many countries around the world have been researching, developing and utilizing polyimide. In terms of price, pi high-temperature tape is much higher than pet high-temperature tape. Therefore, many high-temperature tape manufacturers use pet high-temperature tape to pretend to be pi high-temperature tape, deceiving customers and causing customers to suffer losses. If you have needs, be sure to choose a manufacturer with many years of production experience. Hebei Fanshui is a professional manufacturer of tapes with 15 years of experience.