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A kind of wood modification liquid and its method for treating wood

A technology of wood modification and treatment method, applied in wood treatment, wood treatment details, impregnated wood, etc., can solve the problem of small molecule volatiles release, etc., achieve enhanced dimensional stability, sustainable source and environmental protection, excellent bacteria resistance The effect of the decay ability

Active Publication Date: 2017-10-27
谢延军 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to effectively solve the problem of release of small molecule volatiles such as formaldehyde, phenol, and acetic acid in the existing wood modification technology, the present invention provides an environmentally friendly and efficient wood modification liquid and a method of using it to treat wood

Method used

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  • A kind of wood modification liquid and its method for treating wood
  • A kind of wood modification liquid and its method for treating wood
  • A kind of wood modification liquid and its method for treating wood

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 1. Prepare modified liquid: add H to distilled water 2 O 2 , Formulated into a 0.8M solution and stirred uniformly, and then gradually added sucrose during the stirring process to form a transparent sucrose solution, wherein the added amounts of sucrose were 0%, 10%, 15%, 20% and 30%. Adjust the pH of the solution to 3.0, then slowly add 0.1M catalyst ferrous sulfate solution, stir evenly, add 0.2% sodium thiosulfate, and stir for 1 hour, add 1.0% additive magnesium nitrate, stir evenly to prepare the modifier Solution.

[0034] 2. Vacuum pressure impregnation: using traditional vacuum pressure equipment used in wood preservative treatment, the modifier solution prepared in step 1 is impregnated with poplar wood (specification 2000×200×25mm) using the full-cell method 3 ), control the vacuum degree to -0.01MPa, the vacuum time is 1 hour, the pressure is 1.0MPa, and the pressure holding time is 5 hours.

[0035] 3. Drying polymerization: Put the soaked poplar wood in the atmo...

Embodiment 2

[0041] The modified poplar wood was modified according to the method of Example 1, and then the untreated poplar (material) and the modified poplar were simultaneously placed in a soft rot fungus environment for anti-corrosion performance test (the test standard is European standard EN 807), the test process Take out part of the sample at regular intervals to weigh the absolute dry mass and calculate the mass loss rate. The results are shown in Table 2. It can be seen from Table 2 that after 32 weeks of testing, the mass loss rate of poplar wood materials is greater than 50%, while the highest mass loss rate of the three modified poplar woods is only 7%. The results indicate that the modified wood prepared in Example 1 has excellent soft decay resistance and can be used in environments in contact with soil, such as telephone poles and wooden piles.

[0042] Table 2 Comparison of quality loss rate during soft rot of untreated poplar (material) and modified poplar

[0043]

[0044] ...

Embodiment 3

[0046] 1. Preparation of modified chemical solution: prepare 0M, 0.1M, 0.2M, 0.3M and 0.4M copper hydroxide suspension, and then gradually add glucose during the stirring process, which corresponds to the concentration of the copper hydroxide solution. It is 0%, 5%, 10%, 15% and 20% to form a uniform solution. When the color of the solution becomes brick red, separate the precipitated cuprous oxide, add 1.5% magnesium nitrate to the resulting solution and stir Evenly, the modifier solution is prepared.

[0047] 2. Vacuum pressure impregnation: using traditional vacuum pressure equipment used in wood preservative treatment, the modifier solution prepared in step 1 is soaked with radiata pine (specification 2000×200×25mm) by the full-cell method 3 ), control the vacuum degree to -0.01MPa, the vacuum time is 1 hour, the pressure is 1.0MPa, and the pressure holding time is 5 hours.

[0048] 3. Dry polymerization: Put the soaked radiata pine in the atmosphere and dry it naturally to a m...

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Abstract

The invention discloses a wood modification liquid and a method for treating wood by using the same. The wood modification liquid consists of 0.5-5% activator, 5-50% low-molecular sugar, 0-3% It is made of catalyst, 0-0.5% stabilizer, 0.5-5% additive and water. The method of the wood modification treatment is: inject the wood modification liquid into the wood material under vacuum and pressurized conditions, and make the active functional groups in the modifier and the hydroxyl groups of the wood cell wall undergo a graft reaction under high-temperature drying conditions, thereby Fixed in the wood cell wall. The activator described in the present invention is a green environmental protection agent. In the process of activating the low molecular sugar, the activator can decompose itself into water and oxygen, or can be separated and recycled, and will not have negative effects on the wood modifier and the environment. It effectively solves the problem of release of small molecule volatiles such as formaldehyde, phenol, and acetic acid in the existing wood modification technology.

Description

Technical field [0001] The invention relates to a wood modifier and a method for treating wood using it. Background technique [0002] At present, my country's timber dependence has exceeded 50%, which seriously affects my country's timber safety. Under the new situation that the supply of high-quality timber resources in the world is declining and my country's natural forests are completely banned from logging, the main raw materials of my country's timber industry have turned to artificial fast-growing forest timber. Although my country has the largest plantation in the world, the plantation wood is soft, low in density, low in strength, and unsightly in texture and color. It is prone to deformation, cracking and fungal pests in the environment. These defects make it difficult to be used for high-quality production. Wood products. In order to solve the problem of poor plantation materials, one type of method is to use reactive monomers or prepolymer resins to impregnate the wo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27K3/52B27K3/10B27K5/04
Inventor 谢延军郭文君贺晓艳肖泽芳
Owner 谢延军
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