Masses of pitch. simple recipes

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FACTORY TECHNOLOGIES AT HOME - SIMPLE RECIPES
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Masses of pitch. Simple recipes and tips

Factory technologies - simple recipes

Directory / Factory technology at home - simple recipes

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Various varieties pitch are suitable material for cheap grades of pelastic masses.

Which grade of pitch to use depends on the price and local conditions. The most important pitch is coal. Other grades (named according to the material from which they are obtained): wood pitch, lignite, naphthol, anthracene, petroleum, etc. In general, all grades of pitch are solid products with a color from brown to black, soften at 100 ° C . Some grades of pitch at normal temperatures have a semi-solid consistency.

When preparing masses from pitch, you can use a mixture of different types of pitch and thereby select the desired consistency. There are no exact recipes for such mixtures. This is because all grades of pitch are highly variable products in terms of hardness, color, etc.

The mass used in the electrical industry can be obtained by melting 1 wt. hours of coal tar pitch with the addition of 2 wt. hours of burnt gypsum. The mass is thoroughly mixed, and when it becomes homogeneous, it is poured hot into molds. For special purposes, this mass can be applied to some fabric base.

The electrical insulating mass thus obtained has an amber to light rosin color. It can be processed on a lathe, as well as polished. This mass is sufficiently resistant to moisture and moderate heat, without losing its insulating ability.

Author: Korolev V.A.

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