Method for reinforcing fast-growing floor board

A technology for enhancing processing and floor materials, applied in wood processing, wood processing details, wood processing equipment, etc., can solve the problems of not being able to increase the density of wood, and not be able to effectively curb the rebound of the board, and achieve the effect of low density and high elasticity

Active Publication Date: 2014-03-26
徐州欧美国林人造板有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, there are still many shortcomings in the fast-growing boards treated by these methods. The conventional wood compaction or heat treatment methods are carried out separately, that is, the compaction treatment or carbonization treatment is carried out separately.
Densification treatment alone cannot effectively curb the rebound of the board after densification. It is often used in furniture and other occasions, but it cannot be used for flooring; carbonization treatment alone cannot increase wood density, and it is often used for moisture-proof and anti-corrosion treatment of high-density wood instead of fast-growing wood. sex
[0007] At present, there is no report on the use of fast-growing boards as flooring materials after treatment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1: only densification

[0027] Fast-growing poplar (Poplus deltoides) is used as the substrate, with a format of 600mm×150mm and a thickness of 12mm. Use a hot press to carry out compaction at a temperature of 100°C, a pressure of 1 MPa, and spray 1 g of water on the surface of the board for 5 minutes (press immediately after spraying water, the purpose is to generate water vapor on the surface of the board, plasticize the wood, and facilitate compaction and setting. The rebound is better than not spraying water), the degree of compression is 13.5% after compaction, and 55% in the middle of the thickness direction is not compressed. The surface hardness of the board after compaction reaches 15.84Mpa (the surface hardness is 11.5Mpa when untreated). The plate is aged for 30 days under the conditions of 20° C. and 65% humidity, and the thickness rebound rate of the plate is lower than 4%.

Embodiment 2

[0028] Example 2: carbonization after densification

[0029] Fast-growing poplar is used as the base material, with a format of 600mm×150mm and a thickness of 12mm. After compaction at 100°C, 1MPa and 1g of water spray for 5min (densification conditions and compression degree are the same as in Example 1), immediately carbonize at 240°C and 1.0MPa for 60s. The surface color of the carbonized board becomes darker, and the surface hardness of the board reaches 19.4Mpa, which is 68.7% higher than that of untreated fast-growing poplar. After aging for 30 days at 20°C and 65% humidity, the rebound rate of the plate thickness is close to 0.

Embodiment 3

[0030] Example 3: Comprehensive treatment of "densification + carbonization + nitriding"

[0031] Fast-growing poplar is used as the base material, with a format of 600mm×150mm and a thickness of 12mm. Use a hot press to densify at 100°C, 1MPa, and spray 1g of water for 5 minutes and then carry out carbonization treatment at 240°C (the conditions of densification and carbonization and the degree of compression are the same as in Example 2), and then perform plasma nitriding treatment (using radio frequency plasma Body processor, plasma atmosphere is nitrogen, vacuum degree: 50Pa; power: 300W; time: 7min). After treatment, the board hardness reaches 21MPa, which is 82.6%, 32.6% and 8.2% higher than that of untreated fast-growing poplar wood, dense wood (Example 1) and dense carbonized wood (Example 2). After aging for 30 days at 20°C and 65% humidity, the thickness rebound rate of the board is close to 0.

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PUM

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Abstract

The invention belongs to the field of wood processing, and discloses a method for reinforcing a fast-growing floor board. The method comprises the steps of orderly performing densification, carbonization and nitridation on the fast-growing board. The fast-growing floor board processed by the method has the advantages of high surface hardness, excellent wear resistance and the like, and the fast-growing floor board is elastic, can absorb sound and provides comfortable feet experience; and simultaneously, wood is effectively saved, and optimal economic benefit is implemented.

Description

technical field [0001] The invention belongs to the field of wood processing and relates to a fast-growing floor material strengthening treatment method. Background technique [0002] With the increasing shortage of natural precious wood resources, fast-growing wood will replace natural wood to make solid wood flooring and solid wood composite flooring. It will be widely developed all over the world. China is rich in fast-growing forest resources. The reserved area of ​​fast-growing forests in the country is 62 million hectares, and the timber stock volume is nearly 2 billion M 3 , ranking first in the world. However, fast-growing wood has the defects of low density, easy deformation, and soft material. It cannot be directly used for the production of solid wood flooring. It must be modified and strengthened before it can be used for ground paving. In order to improve the density and hardness of fast-growing wood, there are precedents in the industry for compacting fast-gr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27K5/00
Inventor 徐信武沈斌华何理清李小科冯文军汤正捷周坤杨刚
Owner 徐州欧美国林人造板有限公司
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