What are the plastic mica board materials?

Definition of plastic mica board

Plastic mica board is a rigid plate-like insulating material made of exfoliated mica and suitable adhesives after baking. It has plasticity within a certain temperature range. Suitable for insulating pipes, rings or other zero parts with low glue content are suitable for insulating parts of motors with high temperature rise (such as traction motors and hoisting motors) or high rotational speeds.

The plastic mica board is made of imported special high temperature resistant muscovite or phlogopite raw materials and adhesives. It has excellent electrical insulation function and high temperature resistance function, especially suitable for steel, metallurgy and other industries

Various high-temperature insulations such as power frequency furnaces, intermediate frequency furnaces, electric arc furnaces, etc., as well as asbestos substitutes, are specially designed for the use of electrothermal machinery with high requirements for the following functions: excellent thermal insulation function, refractory temperature up to 1000 degrees Celsius. Low thermal conductivity, excellent electrical insulation, oil and corrosion resistance, asbestos substitute, environmentally friendly, non-toxic, easy to process.

Use of plastic mica board

Plastic mica board is suitable for insulating tubes, rings and other parts for various electrical appliances with a working temperature of 130 °C Silicone plastic mica board is suitable for insulation pipes, rings and other parts of various electrical appliances with a working temperature of 180 °C. 5150 Silicone soft mica board is suitable for motor slot insulation and gasket insulation with a working temperature of 180 °C.

The production of plastic mica board, the center is the preparation of epoxy composite glue, it should have a long storage coordination, mica board factory should have plasticity within a certain temperature and storage time, the epoxy resin dissolves in solvent. Mix the two solutions mentioned above evenly, and control them at (160±2)° C., the molding time is 4-6 min, and the solid content is (60±2)%. The production equipment has a workbench with side ventilation; an air-heat oven with a multi-layer grid frame; a multi-layer hydraulic press; a knife, a shearing machine, etc.

R & D and production process Put phone paper on the sticking table, and stick the mica sheet by 1/3 edge method. After each layer is pasted, use a brush to dip the glue on the mica patch evenly, and then carry out the first step. two layer stickers. Sheets, wholesale of mica boards, coating with glue, until the number of layers and thicknesses are affixed to the rules. Send it to the oven grid plate for baking, the oven temperature is (130±5) ℃, and the time is 5-10min, as long as it does not slide, so as to ensure good plasticity.

Varieties of Plastic Mica Boards

For the plastic mica board with more glue, the glue content accounts for 15%~25% of the product quality. Its different products are 5230 alkyd plastic mica board and 5231 shellac plastic mica board, which are suitable for the production of insulating parts with complex shapes or recommended uses. And 5250 is often used as high temperature insulating parts. For plastic mica boards with a small amount of glue, the binder content accounts for 8% to 15% of the mass of different products. Its products include 5235 alkyd plastic mica board and 5236 shellac plastic mica board, which are suitable for making insulation parts with high temperature rise (such as traction motors and hoisting motors) or fast rotating speed.

Design requirements and principles of plastic mica board The epoxy plastic high temperature resistant mica board is a hard board at room temperature, and it is plastic at a certain heating temperature. It can be molded into various shapes of insulating parts. The glue content of epoxy plastic high temperature resistant mica is divided into two categories, 15% to 25% and 8% to 15%. Thickness specifications above 0.4ram are mechanically pasted, and thin ones are pasted by hand.