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Wood surface modification method

A wood surface and modification technology, applied in wood treatment, wood processing appliances, wood treatment details, etc., can solve the problems of small volume, low efficiency and large equipment investment.

Inactive Publication Date: 2018-03-27
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, there are some technical difficulties in traditional heat treatment technology, mainly including: there are many uncertain factors in the heat treatment process and it is difficult to grasp, such as treatment temperature, treatment time, heating rate, waste oil or waste water treatment, and the relationship between each link in the three-stage treatment process. connection between
Unreasonable heat treatment process parameters will cause a series of adverse consequences to wood, such as increased wood surface roughness, reduced mechanical properties, weakened finishing properties, etc.
The conventional heat treatment process generally requires the equipment to have good pressure resistance and sealing performance, which puts forward high requirements on the manufacturing process and performance of the equipment, which inevitably brings about large equipment investment, small volume, low efficiency and high energy consumption. question

Method used

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  • Wood surface modification method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Taking Poplar as an example to illustrate the specific steps:

[0031] (1) Set the modification target: set the total color difference of the modified wood (ΔE * ) is 30.0;

[0032] (2) Raw material color measurement: Utilize scanner to scan poplar wood surface, import image in Adobe Photoshop software, measure color parameter;

[0033] (3) Laser parameter setting: set the feed speed of the laser head to 150mm / s, the scanning width to 0.1mm, and the laser power to 13w;

[0034] (4) Modification effect evaluation: scan the poplar wood surface after modification, import the image into Adobe Photoshop software, measure the color parameters after modification, compare the difference between the total color difference of the color before and after modification and the target value 30, after The total color difference of poplar surface color after measurement is 29.98, the error is small, the modification effect is good, the color is uniform, the texture is clear, and the g...

Embodiment 2

[0036] Take eucalyptus as an example to illustrate the specific steps:

[0037] (1) Set the modification target: set the total color difference of the modified wood (ΔE * ) is 25.0;

[0038] (2) Raw material color measurement: use a scanner to scan the surface of eucalyptus wood, import the image into Adobe Photoshop software, and measure the color parameters;

[0039] (3) Laser parameter setting: set the feed speed of the laser head to 200mm / s, the scanning width to 0.2mm, and the laser power to 15w;

[0040] (4) Evaluation of modification effect: scan the surface of the modified eucalyptus, import the image into Adobe Photoshop software, measure the color parameters after modification, compare the difference between the total color difference of the color before and after modification and the target value of 25.0, and after The total color difference of poplar wood surface after measurement is 25.01, the error is small, the modification effect is good, the color is uniform...

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Abstract

The invention relates to a wood surface modification method and belongs to the field of wood treatment. The wood surface modification method specifically includes the following four steps of setting of a modified target, raw material surface layer color measurement, laser parameter setting and evaluation of modification effects. The designated portion of the wood surface is modified through laser,meanwhile the modification effects are controllable, the selectivity of laser modification is achieved, and the different functional demands for the materials are met. By means of the wood surface modification method provided by the technical scheme, the color of the modified wood surface layer is uniform, the texture of the modified wood surface layer is prominent, the appearance quality is remarkably improved, meanwhile the wettability of the wood surface is obviously changed, and the surface hydrophobic property is improved.

Description

technical field [0001] The invention relates to the technical field of wood treatment, in particular to a wood surface modification method. Background technique [0002] Wood heat treatment uses water vapor, inert gas, hot oil or water as the heat transfer medium to treat wood under high temperature conditions of 160-230°C, so that the wood components undergo physical and chemical changes, and remove or alleviate the internal heat of the wood. Growth stress and drying stress, improving wood performance, is one of the effective methods to improve wood physical and chemical properties. After heat treatment, the dimensional stability of the wood is enhanced, the equilibrium moisture content is reduced, the weather resistance and biodegradation resistance are enhanced, and the appearance color will also change, which improves the performance and aesthetics of the wood, and can be widely used in outdoor and interior decoration and other fields. . [0003] However, there are som...

Claims

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Application Information

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IPC IPC(8): B27K5/00
CPCB27K5/005
Inventor 李荣荣徐伟熊先青方露谭鑫施昱阳
Owner NANJING FORESTRY UNIV
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