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Compound timber corrosionproof process liquid, its preparing method and method for modifying timber using the process liquid

A wood preservative and treatment liquid technology, which is applied in the direction of wood impregnation, impregnated wood, wood processing utensils, etc., can solve the problems of vulnerability to environmental and microbial damage, human health and environmental safety hazards, and large variation in material properties. Cold water loss resistance, good fixation effect, and the effect of increasing the average weight gain

Inactive Publication Date: 2008-04-16
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] As a biological material composed of natural polymer compounds, wood has the advantages of high strength-to-weight ratio, low processing energy consumption, and relatively small environmental pollution. insufficiency of damage
[0003] Although the traditional wood preservative treatment can effectively improve the corrosion resistance of wood and prolong the service life of wood to a certain extent, but the traditional wood preservative treatment has serious shortcomings in improving the physical and mechanical strength of wood. In addition, most of the traditional wood preservatives use copper, chromium, arsenic and other elements as the main active components, and these metal components have potential hazards to human health and environmental safety, so that the use of preservative treated materials, especially artificial forest preservative treated wood subject to certain restrictions

Method used

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  • Compound timber corrosionproof process liquid, its preparing method and method for modifying timber using the process liquid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The wood to be treated is selected from the sapwood of Chinese fir (Cunninghamia lanceolata), collected from Sichuan, and made into a cube of 19mm (L) × 19mm (T) × 19mm (R), with a diameter of 50mm and a thickness of 1.4mm. (L)×35mm(T)×5mm(R) cuboid three different specifications to be processed.

[0039] Prepare composite wood preservative treatment liquid of the present invention and impregnate wood according to the following steps:

[0040] 1. Preparation of materials:

[0041] 1000 g of sodium montmorillonite (Na-MMT) with 200 mesh and cation exchange capacity (CEC) of 100 mmol / 100 g; cetyltrimethylammonium bromide (CTMAB) with cation exchange capacity 1.5 times that of montmorillonite; A 70% solution of dimethyl didecyl ammonium chloride (DDAC).

[0042] 2. Disperse the sodium-based montmorillonite into a water suspension with a mass percentage of 5% (W / W), stir for 3 hours to disperse evenly, and then let it stand for aging. The aging time is not less than 1 hou...

experiment example 1

[0056] Carry out weight gain rate analysis to the wood that embodiment 1 and comparative example 1, 2 process.

[0057] As shown in table 1, the average weight gain rate of the wood / montmorillonite composite material processed by the composite wood preservative treatment liquid of embodiment 1 is significantly higher than the wood test material processed by the single component DDAC preservative liquid at the same concentration The average weight gain rate indicates that the organic montmorillonite has entered the wood along with the DDAC preservative solution, so that the weight gain rate of the composite material is obviously higher.

[0058] Table 1 Weight gain rate of different treatment test materials

[0059]

experiment example 2

[0061] Carry out X-ray diffraction analysis to the wood treated in Example 1 and Comparative Examples 1 and 2.

[0062] The X-ray diffractometer is XRD-6000 produced by Shimadzu Corporation of Japan. The test conditions are: continuous spectrum scanning, CuKa copper target radiation (λ=0.154mm), radiation tube current 30mA, tube voltage 40kV, scanning range 2θ=1.5~40, step size 0.1°, scanning speed Vt=2° / min.

[0063] The XRD analysis results of the DDAC and organomontmorillonite composite liquid treatment material of embodiment 1, the distilled water blank treatment material of organomontmorillonite and comparative example 1, and the DDAC treatment material of comparative example 2 are shown in Fig. The surface characteristic diffraction peak positions are shown in Table 2

[0064] Table 2 The positions of characteristic diffraction peaks of different treated materials on the 001 crystal plane

[0065]

Measurement parameters

MMT

CTMAB m...

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Abstract

The invention provides a composite preservative treatment liquid for modifying the wood, preparation method thereof and treatment method for modifying the wood using the said treatment liquid. The said treatment liquid comprises wood preservation liquid and organic montmorillonite with dispersion degree of 1.5-3.0%, wherein the organic montmorillonite is formed by reacting the aqueous suspension of sodium based montmorillonite (Na-MMT) with concentration of 3-8% and cetyl trimethyl ammonium bromide (CTMAB) at 60-90 degree. The wood is soaked by the said composite preservative treatment liquid, wood / montmorillonite composite material with good preservative anchor effect can be obtained, therefore the wood not only has good antiseptic property and increased physical mechanical property, hardness and dimensional stability.

Description

technical field [0001] The present invention relates to an infiltration liquid for impregnating wood, a preparation method of the infiltration liquid and a treatment method for impregnating wood with the infiltration liquid, in particular to a wood preservative liquid, its preparation method and a method for modifying wood by using the wood preservative liquid Approach. Background technique [0002] As a biological material composed of natural polymer compounds, wood has the advantages of high strength-to-weight ratio, low processing energy consumption, and relatively small environmental pollution. Insufficient damage due to infringement. [0003] Although the traditional wood preservative treatment can effectively improve the corrosion resistance of wood and prolong the service life of wood to a certain extent, but the traditional wood preservative treatment has serious shortcomings in improving the physical and mechanical strength of wood. In addition, most of the tradit...

Claims

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Application Information

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IPC IPC(8): B27K3/52
Inventor 曹金珍姜卸宏
Owner BEIJING FORESTRY UNIVERSITY
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