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Preparation method of high-strength compact wood

A high-strength, wood technology, applied in wood compression, wood treatment, wood heating and other directions, can solve the problems of insufficient mechanical properties, time-consuming and energy-consuming processing and preparation, and high processing costs, achieving low preparation costs, small proportion of pores, The effect of improving the degree of removal

Inactive Publication Date: 2021-04-30
佛山(华南)新材料研究院
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on this, in order to solve the problems of insufficient mechanical properties in wood processing in the prior art, time-consuming and energy-consuming processing and high processing costs, the present invention provides a method for preparing high-strength dense wood, and the specific technical scheme is as follows:

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  • Preparation method of high-strength compact wood
  • Preparation method of high-strength compact wood
  • Preparation method of high-strength compact wood

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preparation example Construction

[0024]A method of preparing a high intensity dense wood in an embodiment of the present invention, comprising the steps of:

[0025]The wood raw material is placed in a vacuum pressurized tank, soaking under the basic treatment solution under vacuum conditions, the wood raw material is fully impregnated;

[0026]The alkaline treatment solution of the soaking wood is heated, and then removed after cooling;

[0027]Wood after heating treatment is cooked;

[0028]Drying treatment after the cooking treatment is dried to obtain a dry wood;

[0029]The dry wood is placed in a hot press to perform hot press processing, heat insulation treatment, and cooling treatment to obtain high-strength dense wood.

[0030]In one of the embodiments, the wood raw material is one or more of poplar, pine, eucalyptus, aquatic willow, and pair.

[0031]In one of the embodiments, the wood raw material has a size of 100 mm × 50 mm × 50 mm.

[0032]In one of the embodiments, the alkaline treatment solution is a mixed solution of sodi...

Embodiment 1

[0053]200 g of sodium hydroxide and 100 g sulfite were dissolved in deionized water, and the solution was 2000 ml, and the alkaline treatment solution was configured;

[0054]Eucalyptical sizes of 100 mm × 50 mm × 50 mm was placed in a vacuum pressurizing tank and soaked in the alkaline treatment solution, vacuuming to -0.9 MPa, maintained for 30 min;

[0055]The alkaline treatment solution of the soaked eucalyptus is then placed in 100 ° C for water bath heating treatment, and after 7 h, the cooling is removed;

[0056]The eucalyptus after heating of the water bath is placed in deionized water, heated to 100 ° C, replace it once every 1h, a co-cooking treatment for 8 h, and then removed after cooling;

[0057]The eucalyptus after the cooking treatment was placed at 20 ° C, the relative humidity was 85% constant temperature and humidity tank, and the aqueous content of the eucalyptus was 20%;

[0058]The dried eucalyptus is placed on a pressure plate of 100 ° C, and the pressure plate is closed, s...

Embodiment 2

[0060]200 g of sodium hydroxide and 100 g sulfite were dissolved in deionized water, and the solution was 2000 ml, and the alkaline treatment solution was configured;

[0061]Putting the specification size of 100 mm × 50 mm × 50 mm into a vacuum pressurizing tank and soaked in the alkaline treatment solution, vacuuming to -0.9 mPa, maintained for 30 min;

[0062]The alkaline treatment solution of the soaking poplar is placed in 100 ° C for water bath heating treatment, and after 7 h, the cooling is removed;

[0063]Yang is placed in a water bath to be placed in deionized water, heated to 100 ° C, replacement of deionized water at once every 1h, coastal treatment for 8 h, and obtains a base to give a base treatment poplar;

[0064]The moisture content of 200 ° C after the cooking treatment was placed at 20 ° C, and the relative humidity was 85%, and the water content was 20%;

[0065]The dried poplar is placed on a pressure plate of 100 ° C, and the pressure plate is closed, so that the upper plate...

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Abstract

The invention provides a preparation method of high-strength compact wood, which comprises the following steps: putting a wood raw material into a vacuum pressurizing tank, and soaking in an alkaline treatment solution under a vacuum condition until the wood raw material is fully soaked; heating the alkaline treatment solution for soaking the wood under normal pressure, and cooling to obtain the alkaline treatment wood; allowing the wood subjected to heating treatment to be subjected to cooking treatment; drying the cooked wood to obtain dried wood; and placing the dried wood in a hot press for hot pressing treatment, heat preservation treatment and cooling treatment to obtain the high-strength compact wood. The high-strength compact wood prepared through the method has high density, the tensile strength of the high-strength compact wood is obviously improved, and the high-strength compact wood further has the advantages of being simple in preparation process, low in energy consumption and low in cost on the whole.

Description

Technical field[0001]The present invention relates to the field of wood processing, and in particular, there is a method of preparing high strength dense wood.Background technique[0002]Wood is a green, renewable, easy-to-process natural material. However, most of the mechanical properties of most unprocessed natural wood are maintained. Wood compression is one of the effective methods of wood modification processing to improve the mechanical properties of wood. Wood compression means that the wood cell wall is soften under the common action of heat and water, and then a certain pressure is applied to the wood cells, reducing the volume of the cellular cavity of the wood cells and the volume of the tube holes in the woods. The role, thereby improving the mechanical properties of the wood. However, the wood compression method in the prior art has a problem of insufficient wood mechanical properties after processing, and the compression is high. In addition, there is also a combination...

Claims

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Application Information

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IPC IPC(8): B27K3/08B27K5/00B27K5/04B27K3/32B27M1/02
CPCB27K3/08B27K5/001B27K5/04B27K3/32B27M1/02B27K5/065B27K5/007B27J7/00
Inventor 罗屹东吴江伟李玉柱
Owner 佛山(华南)新材料研究院
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