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Modified treatment method of wood and bamboo, modified wood, modified bamboo and floor

A treatment method and modification technology, applied in the direction of wood treatment, wood treatment details, impregnated wood, etc., can solve the problems of non-corrosion resistance, low strength, reduced application field and use value, etc., and achieve the effect of good dimensional stability

Inactive Publication Date: 2014-08-13
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, many defects such as rapid growth, low density, low strength, and non-rot resistance of these woods limit and reduce their application fields and use value.

Method used

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  • Modified treatment method of wood and bamboo, modified wood, modified bamboo and floor
  • Modified treatment method of wood and bamboo, modified wood, modified bamboo and floor
  • Modified treatment method of wood and bamboo, modified wood, modified bamboo and floor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3

[0021] Embodiment 1-3 (to the modification of bamboo)

[0022] The specific methods for the modification and performance testing of bamboo are as follows.

[0023] a, immerse the bamboo (sheet) with thickness 5mm under the liquid level of the heat treatment tank that soybean oil is housed, heat the heat treatment tank, make vegetable oil reach different temperatures (see Table 1 for details), keep warm for 2h; In the case of cooling, immediately release the vegetable oil in the heat treatment tank, and take out the sheet; c, pre-pressing: heat-press the sheet after oil heat treatment on a hot press at a pressure of 1-2Mpa and a temperature of 110-130°C, and the hot-pressing time 10-20min; d. Surface deoiling treatment: place the pre-pressed sheet in a reaction kettle filled with 75°C absolute ethanol (analytical grade) and soak for 2h, then release ethanol; vacuumize the reaction kettle, after 30min The sheet was taken out, dried at 60°C to obtain the finished product, and th...

Embodiment 4-6

[0025] Embodiment 4-6 (to the modification of bamboo)

[0026] Change the step b in the embodiment 1-3 to "after the vegetable oil is naturally cooled to room temperature, discharge the vegetable oil in the heat treatment tank, and then take out the sheet" to obtain corresponding embodiments 4-6. The detection data of each embodiment is shown in Table 2.

[0027] In Tables 1 and 2, the product mildew resistance level test method: EN24-06-2008 wooden product mildew resistance test method; dimensional stability (expansion resistance) test method: GB / T15780-1995 bamboo material physical and mechanical properties test method. From the contrast of embodiment and corresponding comparative example, especially compare with embodiment 2,5 and comparative example 1, as can be seen, after the bamboo is processed by the method of the present invention, the anti-mildew grade and flexural modulus of bamboo have been improved , but has little effect on the static bending strength of bamboo....

Embodiment 7-12

[0028] Embodiment 7-12 (to the modification of wood)

[0029] Modification and performance testing of wood. The specific method is as follows.

[0030] a, immerse different woods (see Table 3) with a thickness of 20 mm under the liquid level of a heat treatment tank equipped with soybean oil, heat the heat treatment tank, make the vegetable oil reach different temperatures, and keep warm for 2 hours; b, when the vegetable oil is not cooled The vegetable oil in the heat treatment tank is released immediately under the situation of the heat treatment tank, and the sheet is taken out to obtain the oil heat treatment material, and its oil content, mechanical properties, etc. are measured, and the specific data are shown in Table 3; , hot pressing on a hot press at a temperature of 110-130 ° C, hot pressing time 10-20 min; d, surface deoiling treatment: place the pre-pressed sheet in a reaction kettle filled with 75 ° C absolute ethanol (analytical pure) Immerse in water for 2 ho...

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Abstract

The invention provides modified wood, modified bamboo and a modified treatment method of the wood and the bamboo. The wood and the bamboo processed by virtue of the method have the beneficial effects that mechanical properties are basically unchanged, anti-corrosive and anti-mold properties are good, the size stabilities are good, the machinability is good, and bonding strengths are high. The modified treatment method comprises the following steps: soaking a sheet below a liquid level of a thermal processing tank containing plant oil, heating the thermal processing tank until the temperature of the plant oil is 130-220 DEG C, and maintaining the temperature for 1-3 hours; draining the plant oil, and taking the sheet out; carrying out hot pressing on the sheet on a hot press for 10-20 minutes, wherein the pressure is 1-3MPa, and the temperature is 110-140 DEG C; soaking the pre-pressed sheet into a reaction kettle containing organic solvents at 60-80 DEG C for 1-3 hours, extracting the organic solvents in the reaction kettle, carrying out vacuumizing for 30-60 minutes, and leaching the plant oil on the surface of the sheet. The invention further provides a floor. The floor is good in corrosion resistance, mold resistance and size stability and has excellent mechanical properties and is made of the modified wood and the modified bamboo.

Description

technical field [0001] The invention relates to a method for treating wood, especially poplar, Chinese fir, masson pine and bamboo, so as to significantly change its anti-corrosion and anti-mildew properties, dimensional stability, workability, Interface bonding properties. Background technique [0002] The implementation of the national "natural forest protection project" and "fast-growing and high-yield forest base construction project" has made poplar, fir, masson pine and other artificial fast-growing forests become the main industrial timber tree species in my country. However, many defects such as rapid growth, low density, low strength, and no corrosion resistance of these woods limit and reduce their application fields and use value. Wood heat treatment is a relatively mature modification technology among many wood modification methods. It refers to placing wood under the condition of partial or complete isolation of oxygen, using high-temperature superheated steam,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27K5/00B27K3/02B27M3/04
Inventor 程大莉蒋身学许斌何文张齐生
Owner NANJING FORESTRY UNIV
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