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A kind of preparation method of eucalyptus flame-retardant wood-based panel

A technology for wood-based panels and eucalyptus, which is applied in the field of wood processing, can solve the problems affecting the quality of plywood, incomplete broken veneer strips, large internal stress, etc., and achieves the effects of abundant raw materials, low cost, and improved flame retardant performance.

Active Publication Date: 2016-03-23
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

However, because eucalyptus has growth defects such as large internal stress and oblique texture, and there are too many young timber, a large number of incomplete broken veneer strips will be produced during rotary cutting during the production process of eucalyptus plywood.
The broken veneer strips currently produced are not effectively utilized, part of which is filled into the plywood, but affects the quality of the plywood; the rest is only used as fuel

Method used

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  • A kind of preparation method of eucalyptus flame-retardant wood-based panel

Examples

Experimental program
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Effect test

Embodiment 1

[0032] Prepare the eucalyptus flame-retardant wood-based panel with a slab size of about 2600 × 1300 × 30mm by the method of the present invention, and the specific steps include:

[0033] (1) Collect the broken veneer strips produced during the processing of eucalyptus as the raw material of this embodiment, select the broken veneer strips with a thickness of 2.0mm, and then cut them into widths of 10-20mm and lengths of 300-400mm Specifications of broken veneer slats.

[0034] (2) Dissolve ammonium polyphosphate in water to form a solution as a flame retardant. Under normal temperature and pressure, soak the shredded veneers cut in step (1) in the flame retardant until the flame retardant completely penetrates into the shredded veneer. veneer strips; then dry to adjust the moisture content of the broken veneer strips to 8-10%.

[0035] (3) Using melamine-modified urea-formaldehyde resin glue as an adhesive, and sizing the broken veneer strips that have completed step (2) wi...

Embodiment 2

[0043] Prepare the eucalyptus flame-retardant wood-based panel with a slab size of about 2600 × 1300 × 30mm by the method of the present invention, and the specific steps include:

[0044] (1) Collect the broken veneer strips produced during the processing of eucalyptus as the raw material of this embodiment, select the broken veneer strips with a thickness of 3.0mm, and then cut them into widths of 15-20mm and lengths of 300-400mm Specifications of broken veneer slats.

[0045] (2) Dissolve ammonium dihydrogen phosphate in water to form a solution as a flame retardant. Under normal temperature and pressure, soak the broken veneer strips cut in step (1) in the flame retardant until the flame retardant completely penetrates into the flame retardant. Crushed veneer strips; then drying to adjust the moisture content of the broken veneer strips to 8-10%.

[0046] (3) Select phenolic resin glue as an adhesive, and spray glue on the broken veneer strips that have completed step (2)...

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PUM

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Abstract

The invention discloses a manufacturing method for a eucalyptus flame-retardant artificial board. According to the method, crushed veneer strips collected when eucalyptuses are processed serve as raw materials, and the crushed veneer strips are clipped according to needed lengths and widths after being classified according to thicknesses of the crushed veneer strips; then, flame retardant is soaked, and adhesion agents are applied; according to needed lengths, widths and heights of board blanks, the crushed veneer strips are laid in parallel in the length direction in single-layer and multi-layer modes to form the board blanks; at last, pre-pressing and hot-pressing are carried out on the board blanks which are formed in a laid mode, and the needed eucalyptus flame-retardant artificial board is obtained. Because widths of the raw materials of the eucalyptus flame-retardant artificial board are small, the flame retardant can conveniently permeate the eucalyptus flame-retardant artificial board, and flame-retardant performance of the artificial board is improved; in mat formation molding, the crushed veneer strips are laid randomly, so that natural defects of the raw materials are scattered in the board blanks, and the artificial board is excellent in physical and mechanical properties; because of the unique mat formation mode, shear stress of the board blanks in the width and length directions is increased, and strength of the board is enhanced. The method is easy to implement.

Description

technical field [0001] The invention relates to the field of wood processing, in particular to a method for preparing a eucalyptus flame-retardant wood-based panel. Background technique [0002] With the reduction of large-diameter high-quality logs and the implementation of my country's natural forest protection project, the development and utilization of fast-growing and high-yield forests has become an effective way to promote the sustainable development of my country's timber industry. After half a century of rapid development, eucalyptus has become the most important plantation tree species in southern my country. [0003] Eucalyptus has application potential in wood, forest pulp, fiberboard, glued wood, tannin, clear oil, honey, rutin, fuel, feed, etc. After entering the 21st century, with the popularization and use of card-free rotary cutters, the rotary-cut veneer industry with Sufeng Eucalyptus as raw material has developed rapidly, which has promoted the industria...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27D1/08B27D1/10B27K5/04
Inventor 陈志林胡拉傅峰吕建雄周永东
Owner INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY