Natural mica sheet is a kind of high temperature resistant insulating material, which can be used in 800℃ for a long time. Good mechanical properties, heat resistance and electrical insulation, large volume resistivity, good dielectric loss. It has the advantages of no layer, no crack and no deformation.
The mica sheet is composed of polysilicon Muscovite, quartz, garnet and rutile, with albitite, zoisite and chlorite. The garnet is rich in Fe and Mg, and the Si of polysilicon Muscovite is up to 3.369, which is also a high pressure combination.