An environmentally friendly and stable surface-impregnated wood and its preparation method

A technology of impregnating wood and stable type is applied in the field of environment-friendly and stable wood and its preparation. Effect

Active Publication Date: 2021-01-05
广东祥通供应链管理有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method adopts the method of asymmetric one-side impregnation, uses beeswax to impregnate the outer surface of the string-cut board with beeswax, and then modulates the moisture content of the dipped string-cut board, which overcomes the pollution problems and problems existing in the prior art. Technical problem of large chord-radial shrinkage ratio of modified wood

Method used

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  • An environmentally friendly and stable surface-impregnated wood and its preparation method
  • An environmentally friendly and stable surface-impregnated wood and its preparation method
  • An environmentally friendly and stable surface-impregnated wood and its preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0033] In this embodiment, poplar is dipped in beeswax on the surface, and the poplar used is a string-cut board, β 1 is 20°, β 2 It is 65°, the chord radial shrinkage ratio is 1.88, and the initial moisture content is 8%.

[0034] 1. Wax melting treatment: heat the solid beeswax to the target temperature of 45°C for 25 minutes.

[0035] 2. Wax dipping treatment: immerse the surface layer of the outer panel of poplar wood into liquid beeswax to a depth of 2 mm for 2 minutes to obtain an impregnated layer on the outer panel surface, such as figure 1 shown.

[0036] 3. Waxing treatment: raise the temperature of the hot plate to the target temperature of 120°C, and keep the temperature of the cold plate at 20°C. Place the inner surface layer of the wood treated in step 2 on the cold plate, close the hot plate, and apply a pressure of 0.2MPa to ensure that the hot plate and the impregnated layer of the outer wood surface are closely attached during the whole process, and the ho...

Embodiment 2

[0042] In this embodiment, poplar is dipped in beeswax on the surface, and the poplar used is a string-cut board, β 1 is 25°, β 2 It is 67°, the chord radial shrinkage ratio is 1.93, and the initial moisture content is 10%.

[0043] 1. Wax melting treatment: heat the solid beeswax to the target temperature of 65°C for 30 minutes.

[0044] 2. Wax dipping treatment: immerse the surface layer of the outer panel of poplar wood into the liquid beeswax to a depth of 3mm, and soak for 3 minutes to obtain an impregnated layer on the surface of the outer panel, such as figure 1 shown.

[0045] 3. Waxing treatment: raise the temperature of the hot plate to the target temperature of 140°C, and keep the temperature of the cold plate at 25°C. Place the inner surface layer of the wood treated in step 2 on the cold plate, close the hot plate, and apply a pressure of 0.2 MPa to ensure that the hot plate and the impregnated layer of the outer wood surface are closely attached during the who...

Embodiment 3

[0050] In this embodiment, the surface layer of rubber wood is impregnated with beeswax, and the rubber wood used is a string cut board, β 1 is 28°, β 2 It is 75°, the shrinkage ratio of chord and radial direction is 2.16, and the initial moisture content is 12%.

[0051] 1. Wax melting treatment: heat the solid beeswax to the target temperature of 70°C for 35 minutes.

[0052] 2. Wax dipping treatment: immerse the surface layer of the outer panel of poplar wood into liquid beeswax to a depth of 4 mm, and soak for 5 minutes to obtain an impregnated layer on the surface of the outer panel, such as figure 1 shown.

[0053] 3. Waxing treatment: raise the temperature of the hot plate to the target temperature of 150°C, and keep the temperature of the cold plate at 30°C. Place the inner surface layer of the wood treated in step 2 on the cold plate, close the hot plate, and apply a pressure of 0.2 MPa to ensure that the hot plate and the impregnated layer of the outer wood surfac...

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Abstract

The invention discloses an environment-friendly stable surface-impregnated wood material and a preparation method thereof. The two lateral surfaces of the environment-friendly stable surface-impregnated wood material are an outer plate surface-impregnated layer and an inner plate surface layer, the ratio of the chordwise dry shrinkage rate of the outer plate surface-impregnated layer to the radialdry shrinkage rate of the inner plate surface layer is 1.3-1.7, and the ratio of the density of the outer plate surface-impregnated layer to the density of the inner plate surface layer is 1.1-1.5; the ratio of the water content of the inner plate surface layer to the water content of the outer plate surface-impregnated layer is 1.2-2.2, the water content of the inner plate surface layer is 7-15%, the water content of the outer plate surface-impregnated layer is 4-9%, an included angle beta 1 formed between the outer plate surface-impregnated layer and a tangent line passing through the intersection points of the outermost annual ring of the outer plate surface-impregnated layer and the outer plate surface-impregnated layer is greater than or equal to 0 degree and smaller than or equal to30 degrees, and an included angle beta 2 formed between the inner plate surface layer and a tangent line passing through the intersection points of the innermost annual ring of the inner plate surface layer and the inner plate surface layer is greater than or equal to 60 degrees and smaller than or equal to 90 degrees. The method can improve the dimensional stability and decorative performance ofthe wood material.

Description

technical field [0001] The invention belongs to the technical field of wood modification and wood product production technology, and more specifically relates to an environmentally friendly and stable wood and a preparation method thereof. Background technique [0002] Wood is a kind of natural porous hygroscopic material, and the moisture content of wood will change with the change of environmental relative humidity during use. And because wood is an anisotropic natural material, when the moisture content of wood changes, the wood will have different dimensional changes in the chord direction, radial direction and grain direction. Usually the longitudinal direction is the smallest, and the total dry shrinkage rate is about 0.1-0.3%, which has little effect on the deformation of wood and can be ignored in wood processing. The radial direction is in the middle, about 4.5-8%, and the chord direction is about 8-12%. For most woods, the ratio of the chord-direction shrinkage ra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27K3/02B27K3/08B27K3/10B27K1/00B27K1/02
CPCB27K1/00B27K1/02B27K3/02B27K3/08B27K3/10
Inventor 涂登云朱志鹏陈川富王先菊周桥芳
Owner 广东祥通供应链管理有限公司
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