Wood-plastic profiles and manufacturing method therefor

A technology of wood-plastic profiles and manufacturing methods, applied in wood treatment, manufacturing tools, wood processing appliances, etc., can solve the problems of high glue consumption, poor heat resistance, toxicity, etc., achieve good environmental protection, and reduce deforestation , Promote the effect of a virtuous circle

Active Publication Date: 2008-05-21
SHANGHAI XINGJIA NUOHUA MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among the existing technologies for using fast-growing trees, there is a reinforced wood-based panel production process in which fast-growing trees are processed into sheet materials, dried, sprayed with adhesives, stirred, and then molded, dried, and demoulded. Such as Chinese patent ZL02114510.5, high-density wooden panels can be produced with this process; however, the adhesive used in this process is polyurethane, and the high-density wooden panels produced by polyurethane as adhesive have the following defects: on the one hand, they are made High cost, including the high cost of adhesives and the excessive amount of glue used in high-density wooden boards made according to its process, reaching 16-19%; on the other hand, polyurethane adhesiv

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Poplar is used as raw material;

[0028] Cut the poplar into veneers with a thickness of 0.5mm and a length of 2000mm by a rotary slicer, place them in an industrial cooking pot, add water and then add an appropriate amount of hydrogen peroxide to make the concentration of hydrogen peroxide in the cooking pot reach 2%, and cook for 45 minutes;

[0029] When the water temperature is controlled to 60°C, take out the veneer and place it in the sun to reduce the moisture content of the veneer to 8%;

[0030] Put the veneer in the dipping basket, hang it into the dipping pool, the dipping pool is filled with water-soluble phenolic resin adhesive, the solid content of the adhesive is 20%, the veneer is immersed in the water-soluble phenolic resin adhesive for 3 minutes, and then Hanging above the drain pool for 45 minutes;

[0031] Put the drained veneer on the drying tunnel truck and send it to the drying tunnel for drying. The temperature of the drying tunnel is controlled...

Embodiment 2

[0036] Using paulownia tree as raw material;

[0037] Cut the paulownia tree into veneers with a thickness of 2mm and a length of 800mm by a planer, place it in an industrial cooking pot, add water and then add an appropriate amount of hydrogen peroxide to make the concentration of hydrogen peroxide in the cooking pot reach 1%, and cook for 50 minutes;

[0038] When the water temperature is controlled to 60°C, take it out and place it in a carbonization furnace for 3 hours of high-temperature and high-pressure carbonization treatment, so that the color of the veneers reaches dark brown. Put these veneers on the drying tunnel and send them to the drying tunnel for drying. The temperature of the drying tunnel is controlled at 75°C to reduce the moisture content of the veneer to 9%;

[0039] Put the veneer in the dipping basket, hang it into the dipping pool, the dipping pool is filled with water-soluble phenolic resin adhesive, the solid content of the adhesive is 17%, the venee...

Embodiment 3

[0045] Use fast-growing wood as the raw material of wood-based panel corner waste as raw material;

[0046] Place waste wood-based panels in an industrial cooking pot, add water to cook for 30 minutes, pour out the waste water, add water and add a little coloring agent to soak for 1 hour, so that the color of the veneer is red;

[0047] Take out the veneer and place it in the sun to reduce the moisture content of the veneer to 6%;

[0048] Put the veneer in the dipping basket, hang it into the dipping pool, the dipping pool is filled with water-soluble phenolic resin adhesive, the solid content of the adhesive is 19%, the veneer is immersed in the water-soluble phenolic resin adhesive for 5 minutes, and then Hanging above the drain pool for 60 minutes;

[0049] Put the drained veneer on the drying tunnel truck and send it to the drying tunnel for drying. The temperature of the drying tunnel is controlled at 70°C to reduce the moisture content of the veneer to 10%;

[0050] L...

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Abstract

The invention provides a wood-plastic sectional material that is synthesized by fast-growing wood veneer, corner offal of artificial boards that take the fast-growing wood as raw material and water-soluble phenol aldehyde resin adhesive and produced through production procedures of material selection-treatment-drying-gumming-gelatin-mould pressing-solidifying-post solidify. The density of the sectional material is 900-1300kg/m<3>, the hardness is 55-120MPa, the scale length is 500-5000mm, the width is 100-1300mm, the thickness is 15-200mm, 24-hour absorbing water thickness expansion rate is 0.6-3 percent and the formaldehyde release quantity is less than 1.5MG/L. The invention enhances the utilization of the fast-growing wood and the wood-plastic sectional material produced has high density and is a high quality material with the advantages of waterproof, heatproof, oil proof, age resistant, fungus resistant, chemical mediator resistant and better security, thereby being applicable to being used for making furniture, floor, decoration material, building moulding board, structure parts, motherboard of containers, track ties, and so on. The invention can also promote the utilization of the fast-growing wood and virtuous circle of the utilization of the wood, thereby having great environmental protection value.

Description

【Technical field】 [0001] The invention relates to the technical field of wood composite materials, especially the veneer of fast-growing wood—including other wood-based panel scraps using fast-growing wood veneer as raw materials, and water-soluble phenolic resin—including modified water-soluble phenolic resin Synthetic wood-plastic profiles. 【Background technique】 [0002] Wood is a primitive material widely used in people's life and industrial and agricultural production. Because of its wide use and large amount of use, more and more forests are being cut down. Although timber belongs to renewable materials, people also widely plant trees and afforestation, but the growth of trees takes time, because the growth of trees cannot keep up with people's consumption of timber, therefore, the current forest resources are less and less. [0003] The increasing scarcity of forest resources has caused people to pay considerable attention to the fast-growing species of trees, such ...

Claims

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Application Information

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IPC IPC(8): B27D1/04B27D1/06B27D1/08B27K5/00B27M1/06
Inventor 高晨
Owner SHANGHAI XINGJIA NUOHUA MATERIALS TECH
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