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Eucalyptus veneer veneered wood-based composite board and preparation method thereof

A composite board and veneer technology, which is applied in the jointing of wooden veneers, wood layered products, wood processing equipment, etc., can solve the problems of insufficient local pressure bearing capacity, extrusion fracture, low compressive strength of composite boards, etc.

Active Publication Date: 2020-02-07
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Eucalyptus veneer is commonly known as eucalyptus panel and eucalyptus core board. It is a thin wood material made of eucalyptus by rotary cutting machine. When cored, due to the pore structure of the honeycomb panel and the easy breakage of eucalyptus, the compressive strength of the composite panel is low. With the increase of the area of ​​the composite panel, the local pressure-bearing capacity is insufficient and it is easy to be squeezed Fracture phenomenon

Method used

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  • Eucalyptus veneer veneered wood-based composite board and preparation method thereof
  • Eucalyptus veneer veneered wood-based composite board and preparation method thereof
  • Eucalyptus veneer veneered wood-based composite board and preparation method thereof

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preparation example Construction

[0043] The present invention also provides a preparation method of eucalyptus veneer veneer wood-based composite board, comprising the following steps:

[0044] After mixing the inorganic adhesive, wood fiber and water, the wood fiber inorganic slurry is obtained;

[0045] Spraying the wood fiber inorganic slurry on the buckwheat husk surface to obtain filler;

[0046] Filling the filler into the pores of the core of the honeycomb panel, and performing the first hot pressing to obtain the honeycomb composite layer;

[0047] The eucalyptus veneer layer is bonded to both sides of the honeycomb composite layer, and the second hot pressing is carried out to obtain the eucalyptus veneer veneer wood-based composite board.

[0048] The invention mixes the inorganic adhesive, wood fiber and water to obtain the wood fiber inorganic slurry.

[0049] The present invention does not have any special limitation on the mixing method, and a mixing method well known to those skilled in the a...

Embodiment 1

[0068] 1) Mix and stir the inorganic adhesive with 40-mesh wood fiber and water to prepare a uniform wood fiber inorganic slurry with a viscosity of 130MPa·s. The weight ratio of inorganic adhesive to wood fiber is 70:30.

[0069] 2) spraying the wood fiber inorganic slurry onto the buckwheat husks with a spray gun, and stirring the wood fiber inorganic slurry while spraying, so that the wood fiber inorganic slurry is evenly sprayed on the surface of the buckwheat husks to obtain the buckwheat husks, wood fibers and inorganic adhesive The filler is mixed, and the weight ratio of wood fiber inorganic slurry to buckwheat husk is 40:60.

[0070] 3) Lay the steel backing plate on the billet forming platform, lay the paper honeycomb core on the steel backing plate, and then fill the above-mentioned fillers into the honeycomb holes, the filling amount is 500kg / m 3 . Put a steel backing plate on the top of the filled honeycomb panel core, send it to the hot press for the first hot p...

Embodiment 2

[0079] 1) Mix and stir the inorganic adhesive with 50 mesh wood fiber and water to prepare a uniform wood fiber inorganic slurry with a viscosity of 110MPa·s. The weight ratio of inorganic adhesive to wood fiber is 60:40.

[0080] 2) spraying the wood fiber inorganic slurry onto the buckwheat husks with a spray gun, and stirring the wood fiber inorganic slurry while spraying, so that the wood fiber inorganic slurry is evenly sprayed on the surface of the buckwheat husks to obtain the buckwheat husks, wood fibers and inorganic adhesive The filler is mixed, and the weight ratio of wood fiber inorganic slurry to buckwheat husk is 35:65.

[0081] 3) Lay the steel backing plate on the billet forming platform, lay the aluminum honeycomb core on the steel backing plate, and then fill the above-mentioned fillers into the honeycomb holes, the filling amount is 300kg / m 3 . Put a steel backing plate on top of the filled honeycomb panel core, send it to the hot press for the first hot p...

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Abstract

The invention provides a eucalyptus veneer veneered wood-based composite board and a preparation method thereof, and belongs to the technical field of composite boards. The eucalyptus veneer veneeredwood-based composite board provided by the invention is characterized by comprising a honeycomb composite layer and eucalyptus veneer layers adhered to two sides of the honeycomb composite layer, wherein the matrix of the honeycomb composite layer is a honeycomb plate core; the pores of the honeycomb plate core are filled with fillers; and the fillers comprise buckwheat hulls, wood fibers and inorganic adhesives. According to the eucalyptus veneer veneered wood-based composite board, a honeycomb core layer of the composite board is filled with the buckwheat hulls, the wood fibers and the inorganic adhesives, so that the compression resistance of the board is improved, and the sound insulation effect of the composite board is further improved.

Description

technical field [0001] The invention belongs to the field of composite boards, in particular to a eucalyptus veneer wood-based composite board and a preparation method thereof. Background technique [0002] Wood-inorganic composite board is a kind of composite board prepared by a certain forming process with wood material and inorganic adhesive as the main raw material. It has excellent properties such as waterproof and flame retardant, and can be widely used in furniture, door panels, indoor and outdoor decoration, wall Body materials and other fields. However, the density of wood-inorganic composite materials is relatively high, and the cost of handling and logistics is relatively high. In order to reduce the cost, by introducing the honeycomb panel structure into the wood-inorganic composite panel, the weight of the panel can be reduced, and the use of wood raw materials can be reduced. At the same time, the honeycomb panel structure can also improve the sound absorption...

Claims

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Application Information

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IPC IPC(8): B32B15/20B32B15/10B32B21/14B32B21/06B32B3/08B32B3/12B32B7/12B32B7/08B32B33/00B32B37/12B32B37/06B32B38/00B27D1/04
CPCB32B15/20B32B15/10B32B21/14B32B21/06B32B3/08B32B3/12B32B7/12B32B7/08B32B33/00B32B37/1284B32B37/10B32B37/06B32B38/00B27D1/04B32B2037/1269B32B2307/102B32B2307/50B32B2419/00
Inventor 李新功杨奕旭吴义强郑霞陈东山
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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