A brief introduction about natural mica

Natural mica is a general term for minerals of the mica family, and is a silicate with a layered structure of potassium, aluminum, magnesium, iron, lithium and other metals, including biotite, phlogopite, muscovite, lepidolite, sericite, green mica, and iron lithium Mica and so on. It is actually not the name of a certain kind of rock, but the general name of mica group minerals. It is a silicate with a layered structure of potassium, aluminum, magnesium, iron, lithium and other metals. Different minerals contain different elements and their formation pathways. There are also slight differences, so there are some differences in their appearance, color, and internal properties.

Mica is a non-metallic mineral, which contains a variety of ingredients, mainly including SiO 2, the content is generally about 49%, and the content of Al 2 O 3 is about 30%. Has good elasticity and toughness. Insulation, high temperature resistance, acid and alkali resistance, corrosion resistance, strong adhesion and other characteristics, is an excellent additive. It is widely used in electrical appliances, welding rods, rubber, plastics, papermaking, paints, coatings, pigments, ceramics, cosmetics, new building materials and other industries with a wide range of uses. With the continuous development of science and technology, people have opened up new application areas.

Its characteristics and main chemical composition: Muscovite crystals are hexagonal plates and columns, the joint surface is flat, and the aggregates are flakes or scales, so it is called fragmented mica. Natural mica is white, transparent and translucent, and has a pure texture and no spots. Mica has the advantages of higher temperature resistance (up to 1200℃ or higher), higher resistivity (1000 times higher), more acid and alkali resistance, transparency, separability and elasticity. It is a synthetic mica insulating sheet for spacecraft. The core basic materials such as synthetic mica insulating sheets for monitoring satellites and synthetic mica polarized sheets for radar phase shifters also have good application prospects in the medical and health fields.

As a common layered structure aluminosilicate natural mineral, mica has special visible light transmission and ultraviolet shielding properties, and has the advantages of high electrical insulation, acid and alkali resistance, and high temperature stability. It is a flexible and transparent electronic device in the future. Ideal material in fields such as. However, the low yield and high price of natural mica greatly limit its application.