Method for producing antiseptic oriented strand board through full-eucalyptus leftover materials

Abstract

The invention provides a method for producing an antiseptic oriented strand board through full-eucalyptus leftover materials. The method comprises the procedures of material preparing, drying, peel and impurity removing, sorting and storing, surface layer and core layer gluing, classified paving, preheating press forming, sanding facing and the like. A surface layer is coated with an isocyanate wood dust powder composite adhesive, a core layer is coated with an antiseptic composite urea-formaldehyde resin adhesive, and core layer wood shavings are of three-layer structures including a core layer middle layer, a core layer upper surface layer and a core layer lower surface layer. The core layer middle layer is longitudinally laid, and the core layer upper surface layer, the core layer lower surface layer and the surface layer are transversely laid. According to the oriented strand board prepared through the method, the static bending intensity in the parallel direction ranges from 34 MPa to 38 MPa, and the parallel elasticity modulus ranges from 4,610 MPa to 4,780 MPa; and the vertical elasticity modulus ranges from 1,500 MPa to 1,774 MPa, the water absorption thickness swelling rate in 24 h ranges from 11% to 16%, and the vertical nail holding force reaches up to 89,000 N. Meanwhile, through adding of an antiseptic agent, the problem that panels are prone to suffering from corrosion of wood-destroying fungi, moulds and white ants is thoroughly solved, and the service life of the panels is prolonged.

Description

technical field [0001] The invention belongs to the field of artificial board manufacture, in particular to a method for producing anticorrosive oriented strand board from whole eucalyptus wood scraps. Background technique [0002] Oriented strand board is one of the new varieties of particle board. When the shavings are paved and formed, the upper and lower surface layers of the oriented strand board will arrange the rubber-mixed shavings longitudinally according to the fiber direction, and the core layer shavings will be arranged horizontally to form a three-layer structure board embryo, which is then hot-pressed into an oriented strand board. The particle shape of this particle board requires a larger aspect ratio, and the thickness is slightly thicker than that of ordinary particle board. [0003] Oriented strand board is a log that is peeled and cut into slices with a certain geometric shape along the direction of the wood grain. The size of the slices is usually 40-14...

AI Technical Summary

Problems solved by technology

[0014] The oriented strand board disclosed in the above-mentioned literature discloses the method of pressing the oriented strand board into oriented strand board by using the remaining rotary cut veneer scraps in the plywood production process as raw materials or the broken veneer strips produced during the production of plywood as raw materials, but there is no use of fast-growing eucalyptus board The leftover wood in the production process is used as the raw material to produce the whole eucalyptus wood leftover oriented strand board, and there is no production of oriented strand board with anti-corrosion performance

Because oriented strand board is a kind of wood material, it is easy to be attacked by bacteria, insects, marine borers and other organisms, and it is easy to rot. limit

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