SU1500474A1 - Preparation for protecting wood from getting rotten - Google Patents

Abstract

The invention relates to the protection of wood from rotting and can be used in the construction and repair of buildings, structures and objects of various types that are prone to rotting. The purpose of the invention is to reduce the negative effects of the drug on the physicomechanical properties of wood. The necessary stable solutions of the preparation are obtained by successively dissolving the components under normal conditions with the following ratio, wt%: copper sulfate 10-22, ammonium chloride 22-26, sodium hydride tetraborate or sodium, potassium or ammonium pentaborate 11-22, soda calcined 37-45. Usually use solutions of 5-20% concentration. The preparation is introduced into the wood by any of the known methods of impregnating or treating wood. The choice of protection method is made taking into account the planned indicators of material security. 2 tab.

Description

The invention relates to the protection of wood from rotting and can be used in the construction and repair of buildings, structures and objects pasHolx) type, prone to decay.

The purpose of the invention is to reduce the negative effects of the drug on the physicomechanical properties of wood.

Example 1 Sulfate, copper 15, sodium pentabrate 22, ammonium chloride 26, soda ash 37

(wt.%).

Copper sulphate 22, sodium tetraborate 11, ammonium chloride 22, soda ash 45

(wt.%).

Example 3. Copper sulphate 10, ammonium pentabrate 21, ammonium chloride 25, soda ash 44 (wt.%).

PRI me R 4 (prototype). Copper sulphate 10, ammonium pentabrate 45, ammonium chloride 45 (wt.%).

Example 5 (prototype). Copper sulphate 70, ammonium pentabrate 14, ammonium chloride 16 Chmas.%).

Example 6 (prototype). Copper sulfate 346, ammonium pentabrate 31, ammonium chloride 23 (wt.%).

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Solutions of the proposed drug and the drug, selected as a prototype, have a bluish color of different intensity. .

The necessary stable solutions of the preparation are obtained by successively dissolving all components under normal conditions in the indicated ratios. Rast Q thieves are usually used at a concentration of 5–20%.

To introduce the drug into the wood can be any of the known methods of impregnation or wood processing. Selection

The use of the invention in comparison with the prototype ensures the reduction of the negative impact on the physico-mechanical properties of the impregnated wood, makes it possible to protect, in accordance with the regulatory and technical documentation, the most widely used wet and hard-to-absorb wood in practice: this is especially important for bearing parts and structures or responsible service structures. In this case, the drug according to the invention them

The method of protection is produced taking into account the plan 1 | 5 em higher toxicity to the planned indicators of material security. For example, to protect wood in XII-XIII class conditions, it is necessary to impregnate in autoclaves under atmospheric pressure with a consumption rate of 8–12 kg / m, whereas in class III conditions, it is sufficient to process wood from the surface, ensuring the consumption of 2 kg / m.

The effect of the preparations on the physicomechanical properties of wood is determined according to GOST 16483-10-73 and GOST 16483-73. Each test variant according to GOST tests: 20 samples.

The results of the experiment are presented in table. 1.j ,.

Toxicity of drugs in relation to the fungus Coniophora with. evaluated according to GOST 16712-71. For each vari-ant of experience, as provided by GOST, 9 samples of pine sapwood with a size of 20 / 20x5 mm are tested. The results of the experiment are presented in table. 2

moving mushrooms.

Claims (1)

Invention Formula 20 . A preparation to protect the wood from rotting, containing copper sulfate, ammonium chloride, sodium dehydration tetraborate or sodium, potassium or ammonium pentaborate, differs by 25 u and in order to reduce the negative effect of the preparation on the physicomechanical properties of wood, it additionally contains soda ash at 30 the following ratio of components, wt.%: Copper sulphate Ammonium chloride Dehydrated tetra- 35 sodium borate or sodium, potassium or ammonium pentaborate Calcium soda T a b 10-22 22-26 11-22 faces 37-45 1 The use of the invention in comparison with the prototype provides a reduction in the negative impact on the physico-mechanical properties of the impregnated wood, makes it possible to protect, in accordance with the regulatory and technical documentation, the most widely used in practice: wet and hard-to-penetrate wood, which is especially important for bearing parts and structures or responsible service structures. In this case, the preparation according to the invention of the fungus. Invention Formula 0 Wood preservative; rotting, containing copper sulfate, ammonium chloride, sodium hydroxide tetraborate or sodium, potassium or ammonium pentaborate, differs by 5 u and, in order to reduce the negative effect of the drug on the physicomechanical properties of wood, it additionally contains soda ash at 0 the following ratio of components, wt.%: Copper sulphate Ammonium chloride Dehydrated tetra-sodium borate or sodium, potassium or ammonium pentaborate Calcium soda T a b 10-22 22-26 11-22 faces 37-45 1 Physical and mechanical properties of wood 80.1 About 80.2 About 81.2 ABOUT 79.8 o 76.6 About 80.2 ABOUT 87.5 78.3 87.2 77.0 85.6 69.9 83.3 91.3 66.1 73.5 61.5 73.6 - 15004746 T and l and c and 2 Threshold absorption of the drug Drug by example 1 2 3 4 5 6 Threshold absorption 1.8 2.8 2.4 2.9 3.9 3.4 --u.-