Fireproof tree. simple recipes

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FACTORY TECHNOLOGIES AT HOME - SIMPLE RECIPES
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Fireproof tree. Simple recipes and tips

Factory technologies - simple recipes

Directory / Factory technology at home - simple recipes

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Here are the recipes for the compositions to give the tree fire resistance (fire resistance).

The simplest, but not the most reliable means is to impregnate the tree for 4-5 days in a solution prepared according to the following recipe:

Alum 6 wt. hours;
Zinc vitriol 2 wt. part 4
Copper sulfate 1 wt. hours;
Water 20 wt. h.

The tree is left for one day in a solution of soda soluble glass (4-5 parts by weight of water per 1 part by weight of soluble glass), after which it is dried in air and again placed in an aqueous solution composed of equal parts of ammonium chloride, chloride magnesium and calcium chloride, and finally dried again in air. The amount of water is taken at the discretion. A tree treated in this way does not catch fire even with strong fire.

The wood is boiled for 2-3 hours in a strong solution of potassium sulphate, after drying it is immersed in a heated mixture of coal tar and clay, sprinkled with a mixture of asbestos and kaolin and the adhesive layer is leveled. After that, the wood is heated in a steam boiler, which achieves the connection of the fire-resistant surface with the wood.

Gerard recommends a flame retardant composition, a composition made from 10 wt. h. phosphoric ammonium salt and 1 wt. hours of boric acid in 100 wt. hours of water.

According to the Ferrel method, the tree is impregnated with an aqueous solution of ammonium sulphate with the addition of oxalic acid. To a solution of aluminum sulphate, containing about 4,5 g of ordinary alumina sulphate per 1260 liters of water, add about 57 g of dry commercial oxalic acid.

Such a composition protects the wood and its color from damage and stains, even if the impregnation is carried out in iron utensils and the wood contains a significant amount of tannin.

According to the research of the Technological Museum in Vienna, the following recipes for fire-retardant compositions turned out to be very practical:

Ammonium sulphate 70 wt. hours;
Borax 50 wt. hours;
Glue 1 wt. hours;
Water 879 wt. h.

In this recipe, ammonium salts play the role, giving the tree a special fire resistance.

Glue 5 wt. hours;
Zinc chloride 2 wt. hours;
Ammonia 80 wt. hours;
Borax 57 wt. hours;
Water 568 wt. h.

In this case, the property of fire resistance is attached to the brown tree.

A certain fire resistance can also be achieved by repeatedly applying solutions of appropriate salts to the surface of the wood. But in this way, the fire-resistant composition cannot penetrate deep into the wood materials and, remaining on the surface, significantly weakens its fire-resistant properties. Fire resistance can be achieved only if the tree is soaked through with saline solutions. For this purpose, the tree is placed in a hermetically sealed vacuum apparatus, in which it is first heated. Air and steam are then removed with an air pump, after which a fire-resistant composition impregnating wood is admitted into the vacuum apparatus under a pressure of 8 atmospheres.

Author: Korolev V.A.

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