Red washable timber and preparation method thereof

A water-resistant and red technology, applied in wood treatment, wood processing equipment, wood treatment details, etc., can solve the problems of easy fading or discoloration, lower dyeing rate, dim shade, etc., achieve bright colors, increase adsorption speed, improve The effect of dye uptake

Inactive Publication Date: 2011-11-16
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But at this time, hydrophilic dyes such as direct dyes, acid dyes, basic dyes and reactive dyes will greatly reduce the dyeing rate on wood after acetylation modification. Easy to fade or change color, and the color is dull, not beautiful

Method used

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  • Red washable timber and preparation method thereof
  • Red washable timber and preparation method thereof
  • Red washable timber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1: In a 250mL three-necked flask equipped with a stirrer, a thermometer and a reflux device, add 20g of Chinese fir powder, 150mL of acetic anhydride, and 30.0g of pyridine, then heat up and react at about 120°C for 1h to 10h. After cooling, the solvent was recovered by suction filtration, washed twice with cold water and once with 95% ethanol, and dried at room temperature to obtain acetylated fir powder.

[0027] Add 200 mL of water, 10.0 g of acetylated fir powder with a weight gain of 15.6%, 0.08 g of 200% Disperse Red 145, 1.0 mL of HAc-NaAc buffer solution, and a pH value of about 4.9 into a stainless steel staining cup, then tighten the staining cup and place In the high temperature and high pressure dyeing machine. Starting from room temperature, the temperature was raised to 100°C at 2°C / min, kept for 60 minutes, and cooled to 60°C at 2°C / min. Take out the staining cup, pour the wood powder in the cup into the Buchner funnel, filter it with suction, ri...

Embodiment 2

[0028] Embodiment 2: According to embodiment 1, add 200mL water in stainless steel dyeing cup, 10.0g the acetylated modified Chinese fir powder of weight gain 5.5%, 0.08g 200% Disperse Red 153 replaces 200% Disperse Red 145, obtains red acetylation Fir powder. The dye uptake rate is 93.6%, and the color fastness to washing of the dyed acetylated fir powder is grade 4. The red acetylated fir powder can be pressed into red water-resistant wood boards after high-pressure pressing.

Embodiment 3

[0029] Embodiment 3: according to embodiment 1, add 200mL water in the stainless steel staining cup, 10.0g the above-mentioned acetylated modified Chinese fir powder of weight gain 45.2%, 2.0g 200% disperse red 177 replaces 200% disperse red 145, start from room temperature , heat up to 100°C at 2°C / min, hold for 12 minutes, and cool down to 60°C at 2°C / min. A pink acetylated fir powder was obtained. The dye uptake rate is 54.2%, and the color fastness to washing of the dyed acetylated fir powder is grade 3. The red acetylated fir powder can be pressed into red water-resistant wood boards after high-pressure pressing.

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Abstract

The invention provides red washable timber and a preparation method thereof. According to the method, timber is subjected to an acetylation treatment to obtain acetylation modified timber, then the acetylation modified timber is immersed into water with pH value of 3.0-10.5, azo or anthraquinone red disperse dyestuff with weight of 0.01% to 20% of weight of the timber is added into the water, and the timber is subjected to dyeing in a dyeing tank at a temperature of 60 DEG C to 140 DEG C. After dyeing, the timber is subjected to water rinse and air drying treatments to obtain the red washable timber. Colors of the timber comprises orange, carmine, rhodamine, bright red, violet red, jujube red, pale red, deep red and the like. The timber has the characteristics of washing fastness, anti-insect, anti-corrosion, cracking deformation resistance and the like, and is suitable for manufacture of indoor high-grade floor and simulated redwood high-grade furniture, construction of outdoor high-grade decoration project like archaize building. The timber especially can be used as beauty decoration materials in a wet environment which has a high water resistance requirement to the materials, and has good application prospect.

Description

technical field [0001] The invention belongs to the technical field of wood modification and aesthetic decoration, and in particular relates to a red washable wood and a preparation method thereof. Background technique [0002] The goal of improving the quality of wood is to achieve the beauty and durability of the wood. Dyeing is one of the means to realize the beauty of wood. It not only improves the original physical and chemical properties of the wood surface, makes the wood get a firmer color, but also imitates the color of precious tree species, improves the visual effect of the wood, and makes the wood texture more beautiful. Clear and pleasing to the eye, enhance the decorative effect of the appearance of wood products, highlight and strengthen the original visual characteristics of wood. Chemical modification of wood is an important means to achieve wood durability. After chemical modification, certain characteristics of wood are often improved or enhanced, especia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27K5/02
Inventor 赵莹曹福祥张贵谭晓燕万晓巧
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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