factory price of synthetic mica or tape for Coating and Ink Pigments

Technical grade sheet mica is used in electrical components, electronics, in atomic force microscopy and as

window sheets.   Other uses include diaphragms for oxygen-breathing equipment, marker dials for navigation

compasses, optical filters, pyrometers, thermal regulators, stove and kerosene heater windows, radiation

aperture covers for microwave ovens, and micathermic heater elements. Mica is birefringent and is therefore

commonly used to make quarter and half wave plates. Specialized applications for sheet mica are found in

aerospace components in air-, ground-, and sea-launched missile systems, laser devices, medical electronics

and radar systems. Mica is mechanically stable in micrometer-thin sheets which are relatively transparent to

radiation (such as alpha particles) while being impervious to most gases. It is therefore used as a window on

radiation detectors such as Geiger-Müller tubes.

In 2008, mica splittings represented the largest part of the sheet mica industry in the United States. Consumption

of muscovite and phlogopite splittings was about 308 t in 2008. Muscovite splittings from India accounted for

essentially all US consumption. The remainder was primarily imported from Madagascar.

Small squared pieces of sheet mica are also used in the traditional Japanese Kodo ceremony to burn incense: A

burning piece of coal is placed inside a cone made of white ash. The sheet of mica is placed on top, acting as a

separator between the heat source and the incense, in order to spread the fragrance without burning it.

Sheet mica is used principally in the electronic and electrical industries. Its usefulness in these applications is

derived from its unique electrical and thermal properties and its mechanical properties, which allow it to be cut,

punched, stamped, and machined to close tolerances. Specifically, mica is unusual in that it is a good electrical

insulator at the same time as being a good thermal conductor. The leading use of block mica is as an electrical

insulator in electronic equipment. High-quality block mica is processed to line the gauge glasses of high-pressure

steam boilers because of its flexibility, transparency, and resistance to heat and chemical attack. Only high-quality

muscovite film mica, which is variously called India ruby mica or ruby muscovite mica, is used as a dielectric in

capacitors. The highest quality mica film is used to manufacture capacitors for calibration standards. The next

lower grade is used in transmitting capacitors. Receiving capacitors use a slightly lower grade of high-quality

muscovite.

Mica sheets are used to provide structure for heating wire (such as in Kanthal or Nichrome) in heating elements

and can withstand up to 900 °C (1,650 °F).