Xylolite coloring. simple recipes

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FACTORY TECHNOLOGIES AT HOME - SIMPLE RECIPES
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Xylolite coloring. Simple recipes and tips

Factory technologies - simple recipes

Directory / Factory technology at home - simple recipes

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Xylolite masses usually take on the natural color of the sawdust used. Poplar, alder and pine give white xylolite. Walnut, mahogany and others give a mass that has a fairly accurate coloration of the named trees, only in slightly lighter colors.

However, for various purposes it is desirable to obtain colored masses. This is achieved in two ways: either in the preparation of xylolithic masses, a dye powder is added, or the sawdust is pre-painted in the appropriate color.

The latter method has the advantage that a more even color is obtained. In addition, such a xylolite mass has higher qualities, since the addition of coloring mineral substances to the mass, as already indicated above, worsens the quality of the mass. So-called cement paints are used as mineral paints. The number of the latter varies depending on the desired shade from 5 to 20% or more. Sometimes aniline dyes and various dye extracts are used for coloring.

Wood coloring requires two operations: staining and staining. The mordant gives the tree the ability to absorb dyes from the solution and retain them so that they cannot be removed by washing. A solution of alumina sulfate is usually used as a mordant. Usually, a solution of 1 to 2% of this salt in water is prepared, sawdust is impregnated in it, and dried again. For many especially beautiful goods, tin salt is used as a mordant, but it is very expensive and is used for especially valuable products.

Staining is carried out by immersing the pickled sawdust in a hot solution of a dye, for example, log extract, mahogany extract, etc. After dyeing, the sawdust is dried again. For coloring, they are used: yellow - an extract of a yellow tree, red - an extract of mahogany, green - first dyed yellow, and then blue.

In blue - they are first etched with a solution of ferrous sulfate, to which a little nitric acid is added, and then stained with a solution of yellow blood salt; in this case, a blue colored compound of Prussian blue is formed in the tree; when dried, the sawdust acquires an even darker color.

In black, they are etched with a solution of ferrous sulfate and painted with an extract from ink nuts, to which a little log extract and a small amount of two-chromium potassium salt are added.

You can also use aniline dyes. For this purpose, a solution of ordinary glue is prepared as follows. Allow 2-3%% of glue to swell in 10 liters of water and then dissolve it by heating over low heat. The solution is diluted with 90 liters of water and sawdust is impregnated with it. After drying (you need to make sure that the sawdust does not stick together), the sawdust treated in this way is immersed in a paint solution and then dried.

Author: Korolev V.A.

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