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Waterborne hinokitiol wood preservative and preparation method thereof

A technology for wood preservative and hinokitiol, which is applied in the field of water-borne plant-derived wood preservative and its preparation, and can solve the problems of poor water solubility, difficult application and the like

Inactive Publication Date: 2013-06-26
NORTHEAST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the problem that although hinokitiol derived from natural rot-resistant wood can impart strong rot-resistant ability to wood, it is difficult to apply because of its poor water solubility, and provides a water-borne hinokitiol wood preservative and its Preparation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0009] Specific embodiment 1: Take 4 g of sodium hydroxide, dissolve it with water and dilute to 2000 mL, stir thoroughly to make an aqueous solution; add 10 g of hinokitiol, stir fully to dissolve. Treat the easily discolored Liriodendron tulipifera wood with this mixture, insert Aspergillus niger or Penicillium citrinum into the wood surface after treatment, and cultivate it at 20℃ and relative humidity RH 65%. After one week, the surface was observed to be free of mold growth, that is, the growth of the two molds was completely inhibited.

specific Embodiment approach 2

[0010] Specific embodiment 2: Take 16g of sodium hydroxide, dissolve it with water and dilute to 2000mL, stir well to make an aqueous solution; add 20g of hinokitiol, stir well to dissolve; then add larch bark tannin with a phenolic hydroxyl content of 0.4mol, Stir to dissolve. Treat perishable poplar wood with this mixture, and insert Trametes versicolor and Gloeophyllum trabeum to the surface of the wood after treatment. At 20℃, relative humidity RH 65% After three months of cultivation, the weight loss rates of untreated wood blocks were 72.99% and 66.18%, while the weight loss rates of treated wood blocks were only 1.87% and 0.60%. The corrosion resistance of the treated wood reached a strong corrosion resistance level.

specific Embodiment approach 3

[0011] Specific embodiment three: Take 40g of sodium hydroxide, dissolve it with water and dilute to 2000mL, stir well to make an aqueous solution; add 40g of hinokitiol, fully stir to dissolve; then add the rubber tannin extract with phenolic hydroxyl content of 0.6mol, and stir Dissolve. Treat perishable poplar wood with this mixture, and insert Trametes versicolor and Gloeophyllum trabeum to the surface of the wood after treatment. At 20℃, relative humidity RH 65% After three months of cultivation, the weight loss rates of untreated wood blocks were 72.99% and 66.18% respectively, while the treated wood blocks did not lose weight, and the corrosion resistance of the treated wood reached a strong corrosion resistance level.

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Abstract

The invention relates to a waterborne hinokitiol wood preservative and a preparation method thereof, and is used for solving the problems that hinokitiol giving a natural corrosion resistance to wood has poor water solubility and is difficult to use. The wood preservative comprises the components according to mol ratio: 0.2-2 mol of hinokitiol, 1 mol of a solubility promoter, and 0.01-1 mol of a tannin extract (the molar ratio calculated according to the content of phenolic hydroxyl group). The wood preservative is used for processing the wood, and when the mass concentration of hinokitiol is about 1%, the resistance of the processed wood to Aspergillus niger, Penicillium citrinum, Trichoderma is up to 100%, and the fungal growth is completely inhibited; and moreover, the molding resistance of the processed wood to Coriolus versicolor and Gloeophyllum trabeum can achieve strong molding resistance level.

Description

Technical field [0001] The invention relates to a water-borne plant source wood preservative and a preparation method thereof. Background technique [0002] Wood preservatives can prolong the use of wood, and the wood preservative industry is an important way to save forest resources. However, the existing wood preservatives, such as creosote, copper-based water-borne preservatives, etc., cannot be degraded or have a long degradation cycle after use, which will cause serious pollution to the environment. One way to solve this problem is to use plant-derived wood preservatives. In the process of plant growth, in order to resist the harm of microorganisms and insects in the surrounding environment, the plant itself produces some secondary metabolites, so that the plant has a natural resistance to decay. Many Cupressaceae woods (such as Hinoki, Western red cedar, etc.) have excellent natural corrosion resistance, and the main substance that gives wood natural corrosion resistance ...

Claims

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Application Information

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IPC IPC(8): A01N35/06A01N25/02A01P3/00A01P1/00B27K3/52
Inventor 李淑君苏文强韩世岩许士玉杨冬梅张凤杨思徐乐乐陈晨
Owner NORTHEAST FORESTRY UNIVERSITY
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