What does the mica in the cable do

Mica tape is a kind of refractory insulation material, according to mica can be divided into: synthetic mica tape, phlogopite tape, muscovite tape. Its best quality performance is synthetic mica, muscovite is the worst, for small specifications of the cable must be selected synthetic mica tape for wrapping, it should be noted that long-term storage of mica tape is easy to absorb moisture, so the temperature and humidity of the surrounding environment must be considered when storing mica tape.
Mica tape insulation products, with good high temperature resistance and combustion resistance. Mica tape has good flexibility in normal times and is suitable for application as the main refractory insulation layer in various fire-resistant cables. In the case of open flame combustion, there is basically no volatilization of harmful smoke, so the product is not only effective in cables, but also very safe.
How is mica tape in fire-resistant cable fireproof?
Insulation, high temperature resistance, and good heat insulation are the characteristics of mica. The main role of mica tape in fire-resistant cables: first, to protect the inside of the cable from the influence of external high temperature within a certain period of time; The second is to make the cable still rely on mica at high temperature to have certain insulation properties.