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Manufacturing method of paint-free technical wood

A manufacturing method, technology of technological wood, applied in the field of wood processing, can solve problems such as pollution, achieve the effects of reducing costs, increasing hardness and smoothness, and high mechanical properties

Inactive Publication Date: 2016-04-20
中山市大涌镇生产力促进中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The purpose of the invention is to: (1) solve the pollution problem in the dyeing process of existing technological wood

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Adopt this inventive method to manufacture the technology wood with fast-growing poplar veneer as raw material, and its preparation method comprises the following steps:

[0026] A. Material selection: Cut the fast-growing poplar wood into veneers with a thickness of 3mm, and put them into the drying equipment to control the drying temperature at 90°C to dry the wood to a moisture content of 11%.

[0027] B. Preparation of reactive dye modified urea-formaldehyde resin: the molar ratio of formaldehyde and urea is 1.5:1, the process of alkali-acid-alkali is adopted, and the urea is input in three times, and the mass ratio of the three input urea is 5:3:2, The time interval between each input is 0.6h. After the last input of urea, add a water-soluble reactive maroon X-R (ReactiverussetishX-R) solution accounting for 35% of the mixed mass of formaldehyde and urea, and then make them fully hydrated by ultrasonic and mechanical stirring. Reaction, the reaction temperature is ...

Embodiment 2

[0037] Adopt this inventive method to manufacture the technology wood with fast-growing eucalyptus veneer as raw material, and its preparation method comprises the following steps:

[0038] A. Material selection: Cut the fast-growing eucalyptus wood into veneers with a thickness of 5mm, and then select the veneers without obvious defects and put them into the drying kiln for drying, so that the moisture content of the wood after drying is below 12%.

[0039]Preparation of reactive dye-modified urea-formaldehyde resin: the molar ratio of formaldehyde to urea is 1.2:1, and the alkali-acid-alkali process is adopted. The urea is added in three times, and the mass ratio of the three times is 5:3:2. The input time interval is 0.7h. After the last input of urea, add a water-soluble reactive yellow X-R (ReactiveyellowX-R) solution accounting for 25% of the mixed mass of formaldehyde and urea, and then make them fully react by ultrasonic and mechanical stirring. The temperature is 50°C...

Embodiment 3

[0051] Adopt this inventive method to manufacture the technical wood with pine veneer as raw material, its preparation method comprises the following steps:

[0052] A. Material selection:

[0053] After the fast-growing pine wood is peeled and cut into 2.5mm thick veneers, it is put into the drying equipment and the drying temperature is controlled at 90°C, so that the wood is dried to a moisture content below 12%.

[0054] Preparation of reactive dye modified urea-formaldehyde resin:

[0055] The molar ratio of formaldehyde to urea is 2.0:1, and the process of alkali-acid-alkali is adopted. The urea is added in three times, and the mass ratio of the three times is 5:3:2. The time interval between each input is 0.8h. After adding urea once, add water-soluble reactive brilliant red X-3B (ReactiveredX-3B) solution accounting for 30% of the mixed mass of formaldehyde and urea, and then make them fully react by ultrasonic and mechanical stirring. The reaction temperature is 80°C...

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Abstract

The invention provides a manufacturing method of paint-free technical wood, which is realized by the following technical scheme: (1) selecting materials, wherein the water content of sliced wood veneer of fast growing wood is controlled at 12% or below; (2) preparing active dye modified urea resin; (3) impregnating, namely impregnating the 0.8-5mm sliced wood veneer of fast growing wood with different-color active dye modified urea resin; (4) carrying out low-temperature drying until the impregnated sliced wood veneer is a little sticky when touched with hands; (5) assembling and compressing, and shaping while controlling the compression rate; (6) curing resin; (7) adjusting water content; and (8) sawing and polishing. By adopting the manufacturing method, the steps of secondary drying and gluing of the technical wood are omitted, the production energy consumption and production cost of the technical wood are reduced, the formaldehyde release of the overlay of the technical wood is reduced by curing action, and late painting is not needed as resin is crystallized on the surface of the sliced wood veneer. The manufacturing method can be widely applied to the fields of furniture veneers, floor veneers, decorative wall paper and the like, and has good application value and great economical and social benefits.

Description

technical field [0001] The invention belongs to the field of wood processing, and in particular relates to a method for manufacturing paint-free technological wood. Background technique [0002] Science and technology wood is to use the principle of bionics, to use ordinary wood or fast-growing wood as raw materials, and to carry out various modification and physical treatment on ordinary wood or fast-growing wood by modern high-tech means and special processing technology (mainly to change its original texture. and color), making it a new all-wood decorative material with more excellent performance and more obvious advantages. At present, technological wood has been widely used in shopping malls, hotels, restaurants, home decoration and furniture industries, etc. The products derived from technological wood include various decorative boards based on plywood, medium density fiberboard and high density fiberboard. Kinds of wood moldings, wooden floors, all kinds of furniture...

Claims

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Application Information

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IPC IPC(8): B27K3/34B27K3/02B27D1/00C08G12/12
CPCB27K3/34B27D1/00B27K3/0214C08G12/12
Inventor 李建堂陈敏杰胡芳园张婷婷涂登云
Owner 中山市大涌镇生产力促进中心
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