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Energy-saving and high-efficiency method for dying crude wood

A log and high-efficiency technology, applied in the field of wood dyeing, can solve the problems of complex process and high working conditions, and achieve the effect of simple process, simplified production steps, and easy operation of the process.

Inactive Publication Date: 2013-11-06
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Most of the above-mentioned patents are veneer dyeing and need to be carried out under high temperature or high pressure. The required working conditions are high, and multi-step pretreatment is required, and the process is complicated.

Method used

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  • Energy-saving and high-efficiency method for dying crude wood

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) To imitate the color of red beech wood, weigh a certain amount of wood red and dissolve it in hot water to prepare a dye solution with a concentration of 1%;

[0036] (2) Put the prepared above-mentioned dye solution in an ultrasonic machine for ultrasonic treatment for 30 minutes, and add the penetrant Pingpinga O and the dyeing accelerator NaCl. After adding the dye solution, the mass fraction of the penetrating agent Pingpinga O is 0.1%. The concentration of dye NaCl is 35g / L;

[0037] (3) Place the fresh poplar log in the middle of the pulse pressure impregnation machine, adjust the impregnation pressure to 0.3MPa, and impregnate the prepared dye solution into the inside of the poplar at room temperature to achieve its dyeing. For a long Two meters, 22 cm diameter poplar logs, the treatment time is 30 minutes.

[0038] (4) Place the dyed poplar logs for two days, then saw them into the required boards, and complete the drying treatment in a conventional drying ...

Embodiment 2

[0040] (1) To imitate the color of red beech wood, weigh a certain amount of wood red and dissolve it in hot water to prepare a dye solution with a concentration of 3%;

[0041] (2) Put the prepared above-mentioned dye liquor in an ultrasonic machine for ultrasonic treatment for 40 minutes, and add the penetrant Pingpinga O and the dyeing accelerator NaCl. After adding the dye liquor, the mass fraction of the penetrating agent Pingpinga O is 0.1%. The concentration of dye NaCl is 35g / L;

[0042] (3) Place the fresh poplar logs in the middle of the pulse pressure impregnation machine, adjust the impregnation pressure to 0.5 MPa, and impregnate the prepared dye solution into the inside of the poplar wood at room temperature to achieve its dyeing. For a long 2 meters, 22 cm diameter poplar logs, the treatment time is 40 minutes;

[0043] (4) Place the dyed poplar logs for two days, then saw them into the required boards, and complete the drying treatment in a conventional drying...

Embodiment 3

[0045] (1) To imitate the color of red beech wood, weigh a certain amount of wood red and dissolve it in hot water to prepare a dye solution with a concentration of 4%;

[0046] (2) Put the prepared above-mentioned dye solution in a sonicator for ultrasonic treatment for 50 minutes, and add the penetrant Pingpinga O and the dyeing accelerator NaCl. After adding the dye solution, the mass fraction of the penetrating agent Pingpinga O is 0.1%. The concentration of dye NaCl is 35g / L;

[0047] (3) Place the fresh poplar log in the middle of the pulse pressure impregnation machine, adjust the impregnation pressure to 0.6 MPa, and dip the prepared dye solution into the inside of the poplar at room temperature to achieve its dyeing. For a long 50 minutes for poplar logs two meters in diameter and 22 centimeters in diameter;

[0048] (4) Place the dyed poplar logs for two days, then saw them into the required boards, and complete the drying treatment in a conventional drying kiln at ...

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Abstract

The invention discloses an energy-saving and high-efficiency method for dying crude wood, comprising the following steps of: (1) selecting crude wood; (2) preparing a dye solution for dying; (3) dyeing the crude wood; and (4) drying the dyed crude wood and preparing dyed wood. The invention has the advantages that: firstly, in the process, fresh crude wood is used in the dyeing process so as to avoid energy source consumption due to dried dyeing and secondary drying; secondly, the granularity and the polymerization degree of dye molecules subjected to ultrasonic treatment are greatly reduced so as to be conductive for the dye molecules to enter inside the wood for deeply dyeing; thirdly, the dyed crude wood can be sawn into boards in different thicknesses according to requirements; fourthly, the wood subjected to dyeing treatment by using the process is uniform in colors inside and outside and retains natural structures and grains of the crude wood; and fifthly, the dyeing process is simple and easy to operate.

Description

technical field [0001] The invention relates to a wood dyeing technology, in particular to a high-efficiency log dyeing method, which belongs to the category of wood dyeing. Background technique [0002] Wood staining is to apply various dyes and pigments on the surface of the wood or penetrate into the interior of the wood by a certain process. At present, in terms of wood staining, the commonly used methods are thermal diffusion method, high pressure impregnation method and decompression-pressure method. The above two methods are aimed at mostly dried thin boards or boards with a certain thickness, and most of them need to be carried out at a certain temperature. The dyeing depth is limited and uneven, and has the advantages of large energy consumption, large amount of waste water, long dyeing time, and no Suitable for today's environmental protection and high efficiency requirements. [0003] Due to the sharp decline of natural large-diameter high-quality materials and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27K5/02
Inventor 蒲俊文郎倩武国峰陈鹤予姜亦飞
Owner BEIJING FORESTRY UNIVERSITY
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