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Burnishing and modifying treatment method for maple wood

A treatment method and technology of maple, which is applied in the direction of wood treatment, wood treatment details, wood processing appliances, etc. It can solve the problems of wood color stability and durability, waste water and waste gas pollution, harmful substances, etc., and achieve mildew resistance. Good anti-corrosion effect, full color and beautiful effect

Active Publication Date: 2017-03-15
ZHEJIANG FORESTRY ACAD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The bleaching pretreatment applied to wood dyeing in the prior art all has the pollution problem of waste water and waste gas, and the chemical dyes and natural dyes of wood dyeing all have certain harmful substances, which are harmful to the human body, and cannot meet the requirements of wooden tableware, children's wooden tableware, etc. Toys and other industries have requirements for wood safety and harmlessness; and the color stability and persistence of natural dyes dyed wood are not strong, which affects subsequent applications

Method used

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  • Burnishing and modifying treatment method for maple wood
  • Burnishing and modifying treatment method for maple wood

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] 1) Color enhancement modification treatment

[0013] The maple wood is made into a sample with a specification of 500×120×20 mm (length×width×thickness). The steps of the method for color enhancement and modification of maple wood in this embodiment are as follows.

[0014] Maple cooking treatment: use water vapor as the heating medium, remove the air content in the treatment tank to within 5%; the first stage, quickly raise the temperature to 100°C, the pressure is 0MPa, and the holding time is 2h; the second stage, raise the temperature to 110°C, 0.2 MPa, holding time 4h; the third stage, cooling to less than 90°C, drying to moisture content of 3%, and naturally cooling to room temperature. Maple supercritical treatment: Cooked maple is placed in supercritical equipment for production, the pressure is 20MPa, the temperature is 50°C, the medium is carbon dioxide, and the supercritical treatment time is 5min. Color-enhancing modification treatment: put supercritically ...

Embodiment 2

[0019] 1) Color enhancement modification treatment

[0020] The maple wood is made into a sample with a specification of 500×120×20 mm (length×width×thickness). The steps of the method for color enhancement and modification of maple wood in this embodiment are as follows.

[0021] Maple cooking treatment: use water vapor as the heating medium, remove the air content in the treatment tank to less than 5%; the first stage, quickly raise the temperature to 120°C, the pressure is 0.2MPa, and the holding time is 4h; the second stage, heat up to 120°C, 0.5MPa, holding time 8h; the third stage, cooling to less than 90 ℃, drying to moisture content of 2%, naturally cooling to room temperature. Supercritical treatment of maple wood: the cooked maple wood is placed in supercritical equipment for production, the pressure is 30MPa, the temperature is 70°C, the medium is carbon dioxide, and the supercritical treatment time is 10min. Color-enhancing modification treatment: put supercritica...

Embodiment 3

[0026] 1) Color enhancement modification treatment

[0027] The maple wood is made into a sample with a specification of 500×120×20 mm (length×width×thickness). The steps of the method for color enhancement and modification of maple wood in this embodiment are as follows.

[0028] Maple cooking treatment: use water vapor as the heating medium, remove the air content in the treatment tank to less than 5%; the first stage, quickly raise the temperature to 110°C, the pressure is 0.1MPa, and the holding time is 3h; the second stage, heat up to 110°C, 0.35MPa, holding time 6h; in the third stage, cool down to less than 90°C, dry to a moisture content of 4%, and cool naturally to room temperature. Maple supercritical treatment: Cooked maple is placed in supercritical equipment for production, the pressure is 25MPa, the temperature is 60°C, the medium is carbon dioxide, and the supercritical treatment time is 7.5min. Color-enhancing modification treatment: put the supercritically tr...

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Abstract

The invention provides a burnishing and modifying treatment method for maple wood, and belongs to the field of wood dyeing for wood modification. The burnishing and modifying treatment method for the maple wood comprises the following three steps of boiling treatment, supercritical treatment and high-temperature heat-treatment burnishing treatment. During the boiling treatment through water vapor, the temperature is required to below 105 DEG C, and the pressure is required to be proper. During supercritical treatment, the pressure is required to be equal to or higher than 20 MPa, the temperature is required to be over 50 DEG C, and the supercritical treatment time is required to be equal to or longer than 5 min. The temperature for high-temperature heat-treatment burnishing treatment is required to be determined according to the maple wood color required in application. According to the burnishing and modifying treatment method for the maple wood, the water vapor and carbon dioxide are used as media for drying and blanching of the maple wood and burnishing and modifying through high-temperature treatment, so that the maple wood dyeing effect is achieved, and environmental friendliness and safety are guaranteed. The maple wood burnished through the method is good in mold-proof effect and anti-corrosion effect, resistant to deformation, safe and nontoxic, and can be used for preparing wooden tableware, wooden toys for children and other products.

Description

technical field [0001] The invention belongs to the field of wood dyeing in wood modification, and relates to a high-temperature heat-treated maple color-enhancing modification treatment method. Background technique [0002] As we all know, the traditional method of dyeing wood with chemical dyes such as acid dyes, reactive dyes, and basic dyes has certain disadvantages. With the gradual enhancement of public environmental awareness and health awareness, the method of dyeing wood with natural plants has received more attention. CN103203787A discloses a patented technology of "a dyeing method for bamboo and wood tableware using sucrose as a dyeing agent". The method uses sucrose as a dyeing agent to carry out dipping dyeing and drying in a drying oven at 130-190°C to prepare caramel-colored bamboo and wood tableware. CN102785276A discloses "the method for dyeing wood with natural plants", using the boiling water extraction filtrate of natural plants such as hematoxylin, turme...

Claims

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Application Information

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IPC IPC(8): B27K5/02B27K5/04B27K5/00
Inventor 庄晓伟陈顺伟潘炘蒋应梯董凌宇刘海华
Owner ZHEJIANG FORESTRY ACAD
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