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Modification treatment method for woods

A treatment method and wood modification technology, which is applied in the processing field of wood or similar materials, can solve the problems of reduced application field and use value, non-corrosion resistance, low density, etc., and achieve improved interface bonding performance, good dimensional stability, The effect of improving the performance of post-painting

Inactive Publication Date: 2015-01-07
谭海韵
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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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] A method for modifying wood, which includes the following steps: a. Oil heat treatment: immerse the wood sheet under the liquid level of a heat treatment tank with soybean oil, and heat the heat treatment tank so that the temperature of the soybean oil is between 180°C In between, keep warm for 1h; b. After the soybean oil is naturally cooled to room temperature, release the soybean oil in the heat treatment tank, and take out the sheet; c. Pre-press: press the sheet on a hot press with a pressure of 2Mpa and a temperature of 120°C. Hot pressing time 10min; d. Surface deoiling treatment: immerse the pre-pressed sheet in a reaction kettle filled with ethanol, set the temperature at 60°C, soak for h, release the ethanol in the reaction kettle, and vacuumize for 40min. The soybean oil was leached out of the surface of the sheet.

Embodiment 2

[0013] A method for modifying wood, which includes the following steps: a. Oil heat treatment: immerse the sheet of wood under the liquid level of a heat treatment tank with rapeseed oil, and heat the heat treatment tank so that the temperature of the rapeseed oil is at 190 Between ℃, keep warm for 3 hours; b. After the rapeseed oil is naturally cooled to room temperature, release the rapeseed oil in the heat treatment tank, and take out the sheet; c. Pre-press: press the sheet at a pressure of 2Mpa and a temperature of 120°C in a hot press Hot pressing on the machine, hot pressing time 20min; d. Surface deoiling treatment: immerse the pre-pressed sheet in a reactor filled with hexane, set the temperature at 90°C, and soak for 3 hours, and release the hexane in the reactor , evacuated for 50 minutes, and the rapeseed oil on the surface of the sheet was extracted.

Embodiment 3

[0015] A method for modifying wood, which includes the following steps: a. Oil heat treatment: immerse the sheet of wood under the liquid level of a heat treatment tank with corn oil, and heat the heat treatment tank so that the temperature of the corn oil is between 185°C 1-3h; b. After the corn oil is naturally cooled to room temperature, release the corn oil in the heat treatment tank and take out the sheet; c. Pre-press: Heat the sheet on a hot press at a pressure of 2Mpa and a temperature of 120°C. Pressing, hot pressing time 15min; d, surface deoiling treatment: immerse the pre-pressed sheet in a reaction kettle filled with acetone, set the temperature at 80°C, and soak for 1-3h, release the acetone in the reaction kettle, Vacuum for 45min to extract the corn oil on the surface of the sheet.

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Abstract

The invention relates to a modification treatment method for woods. The modification treatment method comprises the following steps: a. carrying out oil heat treatment; b. after vegetable oil is naturally cooled to a room temperature, releasing the vegetable oil in a heat treatment tank and taking out sheet materials; c. pre-pressing; and d. carrying out surface oil removing treatment. According to the modification treatment method for the woods, the rotting-resisting and anti-mold properties, the size stability, the machinability and the interface bonding performance of the woods can be remarkably improved under the precondition that the mechanical properties of the woods are kept.

Description

technical field [0001] The invention belongs to the technical field of processing wood or similar materials, and in particular relates to a method for modifying wood. Background technique [0002] Artificial fast-growing forests such as poplar, fir, and masson pine have 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, nitrogen, and oil as heat transfer media. A physical modification method of high-temperature heat treatment for a certain period of time has been successfully applied to floors, furniture, building decoration materials and other fields. [0003] ...

Claims

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Application Information

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IPC IPC(8): B27K3/02B27K5/00
CPCB27K3/02B27K3/34B27K5/00B27K5/007
Inventor 不公告发明人
Owner 谭海韵
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