170 Silicone Resin Bonded Mica

When high temperature resistance is required, Silicon resin bonded mica might be the solution for you.

Mica has exceptional physical characteristics. Naturally it can be found throughout the world, most notably in the presence of Paleozoic rocks. Accessible deposits are located primarily in India, on the American continent, in southern Africa and Russia.

Mica’s chemical composition places it in the aluminium silicates group. Two types are extracted:

• Muscovite, in which there is a predominance of potassium.
• Phlogopite in which the presence of magnesium can be detected.

Its natural properties mean:

• Mica can withstand temperature in excess of 1000°C / 1830°F (Phlogopite), it is flame-retardant, non-flammable, does not give off fumes and conducts very little heat, especially perpendicular to its lamination.
• Mica has a dielectric strength greater than 25 kV/mm, has good resistance to arcing and electrical erosion and is permeable to microwaves.
• Mica is tolerant of water and most chemical agents, such as solvents, acids, bases and mineral oils.
• Mica has good compressive strength. It behaves well in the presence of tensile and bending stresses and has a high modulus of elasticity.

Resin Bonded Mica is available in a number of grades and can be machined or stamped to suit your needs:

• Mica Sheet from 0.1 to 100mm thick
• Gasket Mica for high temperature applications e.g. Turbo charger gaskets
• Commutator Mica, very accurate thicknesses mica sheets.
• Slip plane mica, either reinforced with glass or not.

Typical Applications

• High temperature Electrical Insulation
• Heating equipment
• Microwave wave guide covers
• Induction Heating processes
• Asbestos Replacement
• Ceramic Replacement
• Fire resistance board

Cogemicanite 505 M is a Mica laminate designed for providing outstanding electrical insulation at high temperature. The main application is in heating elements for industrial and household appliances. Available from 0.2 to 1.2mm thick we can supply sheets, pressed and cnc machined pieces.

Cogetherm is a mica laminate designed for electromechanical and thermomechanical applications available from 1.5 to 100mm thick it offers a versitile solution in high temperature applications.