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A kind of low toxicity wood preservative and preparation method thereof

A wood preservative, low toxicity technology, applied in wood impregnation, wood treatment, impregnated wood and other directions, can solve problems such as unreported, and achieve the effect of wide source, uniform color, good color and luster

Inactive Publication Date: 2019-06-11
SOUTHWEST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, the reports are mainly to apply copper-based preservatives and boron-based preservatives to the field of wood preservation respectively, or to mix and compound the two, but to compound copper, boron and organic compounds to establish a chelating mechanism between copper, boron and organic compounds. Combined reaction system, the research or product of generating multifunctional low-toxic protein ammonium copper boron salt preservative has not been reported yet

Method used

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  • A kind of low toxicity wood preservative and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 4 parts of copper sulfate, 5 parts of borax, and 18 parts of poultry feather protein pyrolysis solution are used. The preparation method of the pyrolysis liquid is as follows: pretreatment with sodium sulfite after washing fresh chicken feathers, the pretreatment time is 16h, then carry out pyrolysis in a sodium hydroxide (NaOH) solution with a concentration of 8%, after the pretreatment, the feathers and The weight part of sodium hydroxide solution is 1:4, the pyrolysis temperature is 150°C, and the pyrolysis time is 6h, and then a pyrolysis solution is formed; copper sulfate and borax are measured according to the formula ratio, and after mixing at 25°C Dissolve together in water, and fully dissolve to obtain a blue suspension of copper sulfate and borax, then add poultry feather protein pyrolysis solution and stir at the same time to form a brown turbid solution, that is, the low-toxicity wood preservative is obtained.

[0028] In the present invention, after the pre...

Embodiment 2

[0030] Adopt 7 parts of copper sulfate, 5 parts of borax, and 20 parts of pyrolysis solution; the preparation method of pyrolysis solution is: pretreat with sodium sulfite after washing the fresh feathers and duck feathers, the pretreatment time is 30h, and then in the concentration of 6% Carry out pyrolysis in sodium hydroxide (NaOH) solution, the weight portion of feather and sodium hydroxide solution after pretreatment is 1:6, and pyrolysis temperature is 160 ℃, and pyrolysis time is 8h, then forms pyrolysis liquid; Take copper sulfate and borax according to the above formula ratio, and dissolve them in water together at 30°C. After fully dissolving, a blue suspension of copper sulfate and borax is obtained, and then add poultry feather protein pyrolysis solution and stir at the same time to form a brown color. Cloudy liquid, promptly obtains described low toxicity wood preservative.

[0031] In the present invention, after the preparation of the pyrolysis solution is compl...

Embodiment 3

[0033] Use 5 parts of copper sulfate, 8 parts of borax, and 5 parts of pyrolysis solution; the preparation method of pyrolysis solution is: wash the fresh feathers and goose feathers and pretreat them with sodium sulfite, the pretreatment time is 28h, and then add hydrogen at a concentration of 7%. Carry out pyrolysis in sodium oxide (NaOH) solution, the weight portion of feather and sodium hydroxide solution after pretreatment is 1:8, and pyrolysis temperature is 140 ℃, and pyrolysis time is 4h, then forms pyrolysis liquid; Measure copper sulfate and borax at 25°C, mix them and dissolve them together in water. After fully dissolving, a blue suspension of copper sulfate and borax is obtained. Then add poultry feather protein pyrolysis solution and stir at the same time to form brown turbidity. liquid, that is, to obtain the low toxicity wood preservative.

[0034] In the present invention, after the preparation of the pyrolysis solution is completed, hydrochloric acid or aceti...

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Abstract

The invention discloses a preparation method of a low-toxicity wood preservative and application of the preservative in wood preservation treatment, and belongs to the field of wood protection. The preservative is a protein ammonium-copper-boron salt preservative solution; a poultry feather protein pyrolysis liquid is adopted as a fixing agent; and the preparation method of the preservative comprises the following steps: mixing borax with copper sulfate, further adding the pyrolysis liquid, and compounding, thereby obtaining a protein ammonium-copper-boron salt preservative. A preservation treatment method comprises procedures of normal-temperature normal-pressure dipping and drying. Tests show that the copper sulfate, the borax and feather proteins have chemical reactions to generate amino acid metal salts and amino acid salts, a polymer network which is not dissoluble in water is formed inside wood, and then the fixation properties of copper and boron in the wood can be improved to a certain extent. Compared with a blank test part, a wood test part after the preservation treatment is turned blue, but the overall color darkening degree is not high enough to cover the texture of the wood, that is, the color of the wood is relatively slightly affected by the preservative. Corrosion resistance tests show that the preservative is relatively good in preservation effect.

Description

technical field [0001] The invention belongs to the field of wood protection, and in particular relates to a wood preservative, a preparation method of the preservative and its application in wood preservation. Background technique [0002] Traditionally used wood preservatives are likely to cause harm and pollution to humans and the surrounding environment due to their toxicity. For example, commonly used wood preservatives include creosote, pentachlorophenol, chromated copper arsenate (CCA), etc., among which coal Creosote and pentachlorophenol are highly toxic to the environment and humans and animals. Arsenic and chromium also threaten human health and environmental quality. Therefore, in order to meet the needs of environmental protection, research and development of anti-corrosion materials with environmental protection performance and strong anti-loss performance Preservatives are the trend of wood preservative research today. [0003] In contrast, while copper has a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27K3/52
CPCB27K3/52B27K2240/20
Inventor 夏炎赵毅力罗蓓沈华杰邱坚
Owner SOUTHWEST FORESTRY UNIVERSITY
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