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A kind of bleaching method of tulip tree wood for furniture

A technology of tulip tree and wood, applied in the field of wood bleaching, can solve the problem that it is difficult to meet the whiteness requirements of users

Inactive Publication Date: 2016-02-17
梅州市汇胜木制品有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And because tulip tree wood imported from the United States is a material with serious discoloration, it is difficult to meet the whiteness requirements required by users with existing traditional methods

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The bleaching method of this embodiment comprises two steps: the bleaching of low-concentration hydrogen peroxide as the main agent, and the bleaching of peracetic acid as the main agent. The first step of the main bleaching process is to prepare a bleaching solution with hydrogen peroxide, a bleach stabilizer, an activating assistant, and water. The weight ratio of each component in a 1000ml solution is: hydrogen peroxide 50g, sodium silicate 8g, sodium hydroxide 4g, and the balance being water. Immerse the wood of Liriodendron tulipifera to be bleached into the bleaching solution, raise the temperature to 70°C, and treat it for 90 minutes. Take it out, wash it with clean water, and air-dry it to the equilibrium moisture content. Use a colorimeter for color measurement, and according to the use requirements of chromaticity (whiteness, color difference), the materials are divided into two categories: those that meet the use requirements and those that fail to meet the u...

Embodiment 2

[0032] The first step of the main bleaching process is to prepare a bleaching solution with low-concentration hydrogen peroxide, bleach stabilizer, activating auxiliary agent and water. The weight ratio of each component in 1000ml solution is: hydrogen peroxide 70g, sulfuric acid Magnesium 3g, sodium hydroxide 8g, balance is water. Immerse the wood of Liriodendron chinensis to be bleached in the bleaching solution, raise the temperature to 80°C, and treat it for 60 minutes. Take it out, wash it with clean water, and air-dry it to the equilibrium moisture content. Use a colorimeter to measure the color, and according to the use requirements of the color, the materials are divided into two categories: those that meet the requirements and those that do not meet the requirements. Continue to process the materials that do not meet the requirements, and adopt the second step method. The second step bleaching solution is a mixture of glacial acetic acid, hydrogen peroxide, concentra...

Embodiment 3

[0034] In the bleaching method of this embodiment, the sample is soaked in 0.3% aqueous sodium hydroxide solution for 24 hours and then taken out. After cleaning with clear water, the sample is treated with ultrasonic waves. The medium is water, the frequency is 30 kHz, the temperature is 40 ° C, and the time 30min. The first step of the main bleaching treatment is to prepare a bleaching solution with hydrogen peroxide, bleach stabilizer, activating auxiliary agent and water. The weight ratio of each component in 1000ml solution is: 60g hydrogen peroxide, sodium silicate 6g, sodium carbonate 10g, and the balance is water. Immerse the wood of Liriodendron tulipifera to be bleached into the bleaching solution, raise the temperature to 75°C, and treat it for 80 minutes. Take it out, wash it with clean water, and air-dry it to the equilibrium moisture content. Use a colorimeter to measure the color, and according to the use requirements of the color, the materials are divided int...

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Abstract

The invention is aimed at the bleaching method of tulip tree wood for furniture with large color difference. The bleaching method comprises the following steps: first, the low-concentration hydrogen peroxide is used as the main agent and a bleach stabilizer, an activating auxiliary agent, and water to prepare a bleaching solution for bleaching; The reaction obtains peracetic acid as the main bleaching agent and carries out the second step of bleaching. Liriodendron tulipifera material with large color difference can be bleached with hydrogen peroxide / glacial acetic acid in the second step after low-concentration hydrogen peroxide bleaching to obtain higher whiteness. The production and treatment process is environmentally friendly and pollution-free, and the operating environment is safe. After treatment, the color-changing Liriodendron tulipifera wood has a high whiteness value, stable wood color, easy to dry, and not easy to return to color, and has good processing properties such as coloring and coating.

Description

technical field [0001] The invention relates to the technical field of material and product production, in particular to a wood bleaching method. Background technique [0002] As a natural biological material, due to chemical, biological and physical factors in the growth environment, its components are easy to degrade and change, such as site conditions, injury to living trees, formation of dead knots, pests and diseases, etc. Before it is made into a product, it has to go through some processes: drying, chemical treatment, surface treatment, transportation and many other links will lead to different degrees of color difference. This limits its scope of use and shortens its service life. [0003] Liriodendron wood imported from the United States is a material with serious discoloration. The sapwood of this wood is milky white, which may be mixed with stripes of heartwood, which is light yellowish brown to olive green, sometimes purple. It is brown, and it belongs to the t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27K5/02B27K3/52
Inventor 邬瑞东张碧莲吴智慧杨如娥李红林少校
Owner 梅州市汇胜木制品有限公司
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