Asbestos paper BT (+700С) 0,65 mm heat-insulating GOST 23779-95

Asbestos paper BT (+700C) 0,65 mm thermal insulation GOST 23779-95 is used for insulating hot surfaces (boilers, pipelines, steam lines, heating elements), in the production and heat treatment of metals, castings, etc. Asbestos paper is produced in rolls 950 mm high, weighing > 60-80 kg .

- temperature of insulated surfaces up to +500 °C;

- asbestos content 98-99%;

- elastic, durable;

- does not emit harmful gases into the environment;

- resistant to aging, decay and other biological influences.

Asbestos paper is an insulating electrical material made from chrysotile asbestos fiber with the addition of an organic binder, most often starch; cotton fiber is also added to the composition for strengthening. Available in rolls of 0.2 - 1.5 mm. According to its intended purpose, asbestos paper can be used for thermal insulation (up to 500 °C), electrical insulation (inter-turn insulation of coils, production of laminated plastics), waterproofing (anti-corrosion coating, roofing and gasket material), diaphragm (production of diaphragms for the electrolysis of aqueous solutions of chloride salts of alkali metals), calender (stuffing on calender shafts in the production of condenser paper).

Asbestos paper is a sheet or roll material measuring approximately 1000x800mm, made from asbestos with a small addition of adhesives (usually starch, up to 5% by weight of asbestos) and consisting of 98-99% asbestos.

To obtain asbestos paper, asbestos is wet fluffed, and then sheets are made from the prepared mass on a sheet-forming machine.

Depending on the degree of fluffing of asbestos and compaction of the mass on a sheet-forming machine, the volumetric weight of asbestos paper ranges from 450 to 950 kg/m3.

At temperatures above 500°C, the fibers are destroyed as a result of asbestos dehydration (removal of water of crystallization), so a temperature of 500°C is the limit up to which asbestos paper can be used.

The strength of paper is characterized by the so-called breaking length, which shows at what length (in m) a sample of paper will break under its own weight. This value is determined by calculation based on the results of tensile testing of standard paper samples using a dynamometer.

The thickness of asbestos paper is from 0.3 to 1.5 mm, its weight per 1 m2 is 650-1900 g, normal humidity is not higher than 3%.

Asbestos paper can be corrugated or smooth.

Corrugated asbestos paper is made by passing smooth paper between two heated corrugated drums. Corrugated paper is used to make asbestos cardboard.

At the moment, asbestos paper is the best thermal insulation and sealing material, having such properties as fire resistance, alkali resistance, mechanical strength and durability.

Asbestos paper, depending on its purpose, is classified into several types.

Thus, thermal insulating asbestos paper is intended for thermal insulation of devices; it can withstand temperatures up to 500°C.

Waterproofing asbestos paper is used as a protective coating that prevents corrosion processes; Also, when carrying out roofing work, it can act as a cushioning material.

Electrical insulating asbestos paper is used to insulate coils; In addition, it is in demand in the manufacture of laminated plastics.

The scope of application of the diaphragm variety of asbestos paper is the production of diaphragms used in the electrolysis of certain chemicals.

Finally, asbestos calender paper is used in the production of capacitor paper, where it is used as a packing material for calender rolls.

  From us you can buy BT (+700C)  0,65 mm thermal insulating asbestos paper GOST 23779-95 at the best price in Ukraine. A wide range of products allows us to quickly and efficiently fulfill any orders, helping to complete any construction work on time.