Wood modification chemical liquid and method for treating wood through wood modification chemical liquid

A technology of wood modification and liquid medicine, applied in wood treatment, wood treatment details, impregnated wood, etc., can solve the problem of release of small molecule volatiles, and achieve enhanced dimensional stability, excellent resistance to bacteria and decay, and sustainable sources. and environmentally friendly

Active Publication Date: 2016-06-22
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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  • Wood modification chemical liquid and method for treating wood through wood modification chemical liquid
  • Wood modification chemical liquid and method for treating wood through wood modification chemical liquid
  • Wood modification chemical liquid and method for treating wood through wood modification chemical liquid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 1. Prepare modified liquid: add H to distilled water 2 o 2 , prepared into a 0.8M solution and stirred evenly, 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% respectively. Adjust the pH value of the solution to 3.0, then slowly add 0.1M catalyst ferrous sulfate solution, stir evenly, add 0.2% sodium thiosulfate, stir for 1 hour, add 1.0% additive magnesium nitrate, stir evenly, and obtain the modifier solution.

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

[0035] 3. Dry polymerization: The soaked poplar wood is first pl...

Embodiment 2

[0041] Modification process poplar according to the method of embodiment 1, subsequently untreated poplar (material) and modified poplar are placed in soft rot fungus environment simultaneously and accept anticorrosion performance test (test standard is European standard EN807), during the test Some samples were taken out at intervals to weigh the absolute dry mass, and the mass loss rate was calculated. The results are shown in Table 2. It can be seen from Table 2 that the mass loss rate of the poplar wood material after 32 weeks of testing was greater than 50%, while the highest mass loss rate of the three modified poplar woods was only 7%. This result shows that the modified wood prepared in Example 1 has excellent soft rot resistance, and can be used in environments that are in contact with soil, such as utility poles, wooden piles, and the like.

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

[0043] ...

Embodiment 3

[0046] 1. Prepare modified liquid: prepare 0M, 0.1M, 0.2M, 0.3M and 0.4M copper hydroxide suspensions, and then gradually add glucose during the stirring process, which corresponds to the concentration of glucose added to the concentration of copper hydroxide solution 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 obtained solution, and stir Uniformly, the modifier solution is prepared.

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

[0048] 3. Dry polymerization: Put the soaked radiata pine in the atmosphere to dry natu...

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Abstract

The invention discloses wood modification chemical liquid and a method for treating wood through the wood modification chemical liquid. The wood modification chemical liquid is prepared from, by mass, 0.5%-5% of an activator, 5%-50% of low molecular sugar, 0-3% of a catalyst, 0-0.5% of a stabilizer and 0.5%-5% of additives and water. According to the wood modification treatment method, through vacuum and pressurization conditions, the wood modification chemical liquid is injected into wood materials, an active functional group in a modifier and a wood cell wall hydroxyl group are subjected to a grafting reaction under the high-temperature and dry conditions, and thus the active functional group is fixed in the wood cell wall. According to the wood modification chemical liquid and the method for treating the wood through the wood modification chemical liquid, the activator is an environment-friendly chemical, and in the process that the activator activates the low molecular sugar, the activator is decomposed into water and oxygen, or the activator can be subjected to separation recycling, so that the negative effect is not brought to the prepared wood modifier and the environment, and the problems of emission of formaldehyde, phenol, acetic acid and other micromolecule volatile matter existing in the prior wood modification art are effectively solved.

Description

technical field [0001] The invention relates to a wood modifier and a method for treating wood with the same. Background technique [0002] At present, my country's timber dependence on foreign countries has exceeded 50%, seriously affecting my country's timber security. Under the new situation of reduced supply of high-quality timber resources in the world and a complete ban on logging of natural forests in my country, the main raw material of my country's timber industry has turned to artificial fast-growing forest timber. Although my country has the largest artificial forest in the world, the material of the artificial forest is soft, low in density, low in strength, unattractive in texture and color, and prone to deformation, cracking and fungal rot in the environment. These defects make it difficult to be used to produce high-quality wooden products. In order to solve the problem of poor material quality of plantation forests, one method is to use active monomers or pr...

Claims

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Application Information

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Patent Type & Authority Applications(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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