Modification method applicable to eucalyptus timbers

A technology of wood and eucalyptus, which is applied in wood treatment, wood heating, impregnation of wood, etc., can solve the problems of destroying the mechanical strength of wood, reducing wood utilization rate, poor dimensional stability, etc., to improve infiltration ability, shrink resistance, and strength Effect

Active Publication Date: 2017-02-22
兴业县金达木材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the rapid growth characteristics of eucalyptus, its wood is prone to cracking, deformation and other defects during the drying process, resulting in poo

Method used

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  • Modification method applicable to eucalyptus timbers
  • Modification method applicable to eucalyptus timbers
  • Modification method applicable to eucalyptus timbers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The present embodiment carries out the improvement of eucalyptus wood by following method:

[0025] (1) Soak the eucalyptus aerial wood at room temperature in a weak acid solution with a hydrogen ion concentration of 0.1mol / L (wherein, the acid in the weak acid solution is oxalic acid), and soak the wood when the water content is 80%;

[0026] (2) After taking out the soaked wood of step (1), put it into a saponin solution with a mass concentration of 2% for soaking. After soaking for 30 minutes, the volume ratio of the saponin solution and the treatment solution is 20:1. In the saponin solution, add the treatment solution that is 1% sodium silicate, 0.1% ethylene glycol and 1% ethanol by mass concentration to obtain mixed solution, adjust the pH value of mixed solution to be 2, when in mixed solution When the moisture content of the soaked wood reaches 110%, take out the wood, seal and wrap the wood tightly with a plastic film, and place it in steam at 100°C for fumiga...

Embodiment 2

[0030] The present embodiment carries out the improvement of eucalyptus wood by following method:

[0031] (1) Soak the eucalyptus aerial wood at room temperature in a weak acid solution with a hydrogen ion concentration of 0.5mol / L (wherein, the acids in the weak acid solution are oxalic acid and acetic acid), and soak the wood when the water content is 90%;

[0032] (2) put into the saponin solution that mass concentration is 5% after taking out the soaked wood of step (1) and soak, after soaking for 40min, according to the volume ratio of saponin solution and treatment liquid, be the ratio of 30:1 In the saponin solution, add the treatment liquid that is 3% sodium silicate, 0.5% ethylene glycol and 3% ethanol by mass concentration and obtain mixed solution, adjust the pH value of mixed solution to be 4, when in mixed solution When the moisture content of the soaked wood reaches 120%, take out the wood, seal and wrap the wood tightly with a plastic film, and place it in stea...

Embodiment 3

[0036] The present embodiment carries out the improvement of eucalyptus wood by following method:

[0037] (1) Under room temperature, eucalyptus aerial wood is soaked in the weak acid solution (wherein, the acid of weak acid solution is oxalic acid, acetic acid and citric acid) that hydrogen ion concentration is 0.4mol / L, when soaking to moisture content 82%, obtain soak wood;

[0038] (2) After taking out the soaked wood of step (1), put it into a saponin solution with a mass concentration of 3% for soaking. After soaking for 35 minutes, the volume ratio of the saponin solution and the treatment solution is 22:1. In the saponin solution, add the treatment solution that is 2% sodium silicate, 0.3% ethylene glycol and 2% ethanol by mass concentration to obtain mixed solution, adjust the pH value of mixed solution to be 3, when in mixed solution When the moisture content of the soaked wood reaches 114%, take out the wood, seal and wrap the wood tightly with a plastic film, and...

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Abstract

The invention relates to the technical field of timber treatment, and in particular to a modification method applicable to eucalyptus timbers. The timber treatment method disclosed by the invention mainly utilizes sodium silicate and ethanol to carry out hydrolysis and condensation polymerization reactions under the effect of polyethylene glycol as a catalyst, so that nano-sized particles are aggregated and a sol system is formed; moreover, before timbers are treated by being soaked in a treating solution, an acid-deficient solution is first utilized to treat the eucalyptus timbers, an escin solution is also used for soaking the eucalyptus timbers, and thereby the wall breakability and wettability of timber cell walls are increased; after treatment in the treating solution, gel molecules can be further regularly arranged by treatment methods of fumigation and microwave drying, and thereby the purpose of modifying the eucalyptus timbers and increasing the stability of the timbers is achieved.

Description

[0001] 【Technical field】 [0002] The invention relates to the technical field of wood processing, in particular to a modification method suitable for eucalyptus wood. [0003] 【Background technique】 [0004] Eucalyptus is native to Australia. Since it was discovered and named in 1770, there are more than 940 species in the world. my country began to introduce eucalyptus in 1890, and it has a history of 126 years. The planting volume ranks third in the world, second only to Brazil and India. Eucalyptus has become one of the three major afforestation tree species in my country. At present, eucalyptus is widely distributed in most parts of southern my country, especially in Guangxi. Since eucalyptus is one of the most important artificial fast-growing and high-yielding forest species in China, it plays an important role in my country's "forest-paper integration" project. However, due to the rapid growth characteristics of eucalyptus, its wood is prone to cracking, deformation a...

Claims

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Application Information

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IPC IPC(8): B27K5/00B27K5/06B27K5/02B27K3/34B27K3/52
CPCB27K3/34B27K3/52B27K5/001B27K5/0055B27K5/02B27K5/06
Inventor 何国常
Owner 兴业县金达木材有限公司
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