Complex wood bundle, complex recombinant wood and preparation method thereof

A technology for reconstituting wood and wood bundles, applied in wood treatment, flat products, impregnated wood, etc., can solve problems such as cracking, deformation, and easy occurrence of wire skipping, and achieve the effect of good mechanical properties

Active Publication Date: 2019-12-20
INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems existing in the prior art, the present invention provides a complexed wood bundle, a complexed recombined wood and a preparation method thereof, which solves the problems of the recombined wood in the prior art that are prone to wire jumping, deformation, cracking, etc., and maintains good mechanical properties

Method used

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  • Complex wood bundle, complex recombinant wood and preparation method thereof
  • Complex wood bundle, complex recombinant wood and preparation method thereof
  • Complex wood bundle, complex recombinant wood and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] A preparation method of complexed wood beams, comprising:

[0058] Step 1: Prepare an appropriate amount of wooden beams;

[0059] 11) the eucalyptus saw is cut into the wood section of 2000mm length;

[0060] 12) above-mentioned wooden segment is rotary-cut into the veneer of 8mm thickness;

[0061] 13) The above-mentioned veneers are disentangled to form wood bundles, the average diameter of the wood bundles is 1.3mm, and the maximum diameter is less than 5.0mm, and the wood bundle conduits, the cell walls of parenchyma cells or the intercellular layer of fibers are arranged A series of irregular cracks, see image 3 (a);

[0062] 14) drying the above-mentioned wood bundles to a moisture content of 6%;

[0063] Step 2: introduce plant polyphenols into wood beams to obtain polyphenol wood beams;

[0064] 21) Dissolving tannin in water and stirring evenly to form an aqueous tannin solution with a concentration of 1.0 g / L;

[0065] 22) Pressurize and impregnate the...

Embodiment 2

[0073] A preparation method of complexed recombined wood, using the complexed wood bundle prepared in embodiment 1 as raw material, comprising:

[0074] Step 1: Sizing

[0075] The urea-formaldehyde resin with a molecular weight of 600 is coated on the surface of the complex wood beam by roller coating, and the sizing amount is 8%;

[0076] Step 2: Dry

[0077] Dry the impregnated composite wood bundles in a drying kiln at a drying temperature of 60°C and control the drying moisture content at 14%

[0078] Step 3: Assembly

[0079] The dried complexed wood bundles are assembled along the grain to form complexed recombined wood slabs;

[0080] Step 4: Gluing and Molding

[0081] Put the above-mentioned recombined wood slabs into the cold press, and make complex recombined wood squares by cold pressing, the pressure is 60MPa, and the cold pressing temperature is normal temperature; it is sent into the curing tunnel for curing, the curing temperature is 135 °C, and the curing...

Embodiment 3

[0087] A preparation method of complexed wood beams, comprising:

[0088] Step 1: Prepare an appropriate amount of wooden beams;

[0089] 11) Poplar sawn is cut into the wood section of 2000mm length;

[0090] 12) peeling the above-mentioned wood section into a veneer with a thickness of 6mm;

[0091] 13) The above-mentioned veneer is decomposed to form a wood bundle, the average diameter of the single wood fiber bundle is 1.3mm, and the maximum diameter is less than 5.0mm, and the wood bundle vessel, the cell wall of the parenchyma cell or the intercellular layer of the fiber A series of irregular cracks are set in

[0092] 14) drying the above-mentioned wood bundles to a moisture content of 30%;

[0093] Step 2: introduce plant polyphenols into wood beams to obtain polyphenol wood beams;

[0094] 21) Dissolving myrica rubra extract in water and stirring evenly to form a plant polyphenol aqueous solution with a concentration of 2.5g / L;

[0095] 22) Implant the above-ment...

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Abstract

The invention relates to a complex wood bundle, complex recombinant wood and a preparation method thereof, and belongs to the technical field of wood processing. The preparation method of the complexwood bundle comprises the following steps: step 1, preparing a proper amount of wood bundles; step 2, introducing plant polyphenols into the wood bundles to obtain polyphenol wood bundles; step 3, introducing metal salt into the polyphenol wood bundles to obtain polyphenol metal salt wood bundles; and step 4, drying the polyphenol metal salt wood bundles to obtain the complex wood bundle. By the complex recombined wood prepared from the complex wood bundle, the problems that the recombined wood in the prior art is prone to wire skipping, deformation, cracking and the like are solved, and goodmechanical properties are maintained.

Description

technical field [0001] The invention relates to the technical field of wood processing, in particular to a complexed wood beam, complexed recombined wood and a preparation method thereof. Background technique [0002] my country is the country with the most abundant fast-growing forest resources in the world. Using fast-growing forest wood to produce high-performance wood-based composite materials to make up for the shortage of high-quality wood in my country has become a major industry problem faced by my country's forestry industry. Recombined wood not only improves and enhances the physical and mechanical properties of fast-growing forest wood, but also endows it with new functions such as hydrophobicity, flame retardancy, anti-corrosion, mildew resistance, and termite resistance. It is also one of the main directions for the development of efficient utilization of fast-growing forest resources in my country in the future. [0003] Wire jumping, deformation, cracking and ...

Claims

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Application Information

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IPC IPC(8): B27K3/02B27K3/08B27K5/04B27K3/12B27N3/20
CPCB27K3/0207B27K3/0214B27K3/08B27K3/12B27K5/04B27N3/203
Inventor 余养伦于文吉祝荣先吕斌
Owner INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY
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