CN110434967A - A kind of wood veneer dyeing method - Google Patents
A kind of wood veneer dyeing method Download PDFInfo
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- CN110434967A CN110434967A CN201910676433.1A CN201910676433A CN110434967A CN 110434967 A CN110434967 A CN 110434967A CN 201910676433 A CN201910676433 A CN 201910676433A CN 110434967 A CN110434967 A CN 110434967A
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- wood
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- dyeing method
- wood veneer
- pretreatment fluid
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/02—Processes; Apparatus
- B27K3/04—Impregnating in open tanks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
- B27K5/003—Treating of wood not provided for in groups B27K1/00, B27K3/00 by using electromagnetic radiation or mechanical waves
- B27K5/0065—Ultrasonic treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
- B27K5/02—Staining or dyeing wood; Bleaching wood
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
The invention discloses a kind of wood veneer dyeing methods, the following steps are included: coupling agent A, a small amount of sodium hydroxide and ethyl alcohol are tuned into pulpous state, a small amount of boiling water is added to stir to dissolve, adds remaining sodium hydroxide and water is configured to pretreatment fluid, then appropriate inorganic salts are added, are stirred evenly；Veneer to be dyed is impregnated in pretreatment fluid, appropriate wetting agent is added in bath raio 1:15-20, the ultrasonication 30-180min at 30-60 DEG C, takes out wood chip；Color developing agent B is dissolved in inorganic acid solution, 0-10 DEG C is ice-cooling to, is gradually added into sodium nitrite under stirring, be stirred to react 1-30min at 0-10 DEG C；Pretreated wood chip is immersed in chromogenic reagent solution, bath raio 1:15-20, be warming up to 10-20 DEG C, adjusted pH value to 5-8, dye 10-120min, taking-up is dried.The colouring method is easy to operate, is easy industrialization, wood single-plate can be dyed to the color of rare timber, improve its added value.
Description
Technical field
The invention belongs to wood staining field, in particular to a kind of wood veneer dyeing method.
Background technique
Wood staining is to make dyestuff in conjunction with timber to change its original color using chemically or physically chemical method,
To meet the needs of consumer is to timber appearance color, fast growing wood surface quality can be improved, improve its visual effect and dress
Performance is adornd, rare timber is copied.
Currently, wood staining generallys use traditional exhaust process, common dyestuff is water soluble organic dye mostly, including
Acid dyes, reactive dye, direct dyes, dye of positive ion etc..Acid dyes is a kind of anionic dye, mainly by azo
Class, anthraquinone dyes form, and a large amount of carboxyl, hydroxyl or sulfonic group are contained in molecular structure；Containing anti-in reactive dyestuff molecule
Answering property group can form Covalent bonding together with the hydroxyl in timber；Direct dyes can be directly acted on not specially treated
The dyestuff of timber, and the combination of lignocellulosic mainly rely on intermolecular Van der Waals force and hydrogen bond；The dye of positive ion, also known as
Basic dye, its main feature is that it is bright in colour, have higher colouring power.But the water solubility of these dyestuffs is larger, dye-uptake is low, dyestuff
Leachability is high, so that final products color is unstable, through-dyeing is bad.
Summary of the invention
For existing issue, the invention proposes a kind of wood veneer dyeing methods, and the colouring method is easy to operate, are easy
Wood single-plate, can be dyed the color of rare timber, improve its added value by industrialization.
A kind of wood veneer dyeing method, it is characterised in that the following steps are included:
A. the preparation of pretreatment fluid: being tuned into pulpous state for coupling agent A, a small amount of sodium hydroxide and ethyl alcohol, and a small amount of boiling water stirring is added to make it
Dissolution, adds remaining sodium hydroxide and water is configured to the pretreatment fluid for being 0.50-2.0% containing coupling agent A mass fraction, hydrogen
Oxidation na concn is 3.0-6.0g/L, inorganic salts sodium chloride, potassium chloride or sodium sulphate is then added, so that nothing in pretreatment fluid
The content of machine salt is 5-80g/L, is stirred evenly；
B. wood single-plate pre-processes: veneer to be dyed being impregnated in pretreatment fluid, bath raio 1:15-20, quality point is added
Number accounts for the wetting agents of pretreatment fluid 0.15-2.0%, the ultrasonication 30-180min at 30-60 DEG C, enables coupling agent A
Be adsorbed onto wood surface and penetrate into wood internal, with wood structure great amount of hydroxy group, carboxyl occur interact and adsorb
Wood surface and inside are deposited to, wood chip is taken out；
C. the preparation of chromogenic reagent solution: color developing agent B is dissolved in inorganic acid solution, is ice-cooling to 0-10 DEG C, under stirring gradually
Sodium nitrite is added, is stirred to react 1-30min at 0-10 DEG C；
D. it dyes: pretreated wood chip being immersed in chromogenic reagent solution, bath raio 1:15-20 is warming up to 10-20 DEG C, uses vinegar
Sour sodium, disodium hydrogen phosphate or sodium dihydrogen phosphate adjust pH value to 5-8, and coupling colour development 10-120min, taking-up is dried.
Coupling agent A is 2- hydroxyl -3- naphthanilide analog derivative in the step a, and general structure is as follows:, wherein Ar is benzene, and substituent R is-H ,-CH3、-Cl、-OCH3、-NO2In
One, two or three.
Wetting agent is or mixtures thereof non-ionic or anionic wetting agent in the step b.
Ultrasonic frequency is in 20k-130kHz in the step b.
Color developing agent B is aromatic primary amine analog derivative in the step c, and general structure is, wherein
Substituent R ' it is-H ,-CH3、-OCH3、-Cl、-NO21 or 2.
The molar ratio of color developing agent B and coupling agent A is 1.0-1.2:1 in the step c.
Inorganic acid is hydrochloric acid, sulfuric acid or hydrobromic acid in the step c.
The molar ratio of inorganic acid and color developing agent B are 2.1-2.4:1 in the step c.
The molar ratio of sodium nitrite and color developing agent B are 1.03-1.2:1 in the step c.
The present invention dyes wood single-plate with aromatic primary amine analog derivative, and principle is: using contain coupling agent A first
Pretreatment fluid handle wood single-plate, pretreatment fluid infiltrates wood single-plate first, compound A by wood surface adsorption force and
It is adsorbed on wood single-plate surface, is involved under capillary tension effect by means of ultrasound, compound A can lead under alkaline condition
The pit, conduit and capillary system for crossing timber penetrate into wood internal, and by means of chemically or physically chemical action and wood
The functional groups such as hydroxyl, carboxyl inside material occur interaction and adsorb and deposit to wood internal；In acid condition, fragrance primary
Amine derivant can be reacted with sodium nitrite generates diazonium salt, this compound can be with wood surface or infiltration under certain pH conditions
Coupling colour development reaction occurs for the coupling agent A to wood internal, generates coloured azo compound and anchors at wood surface and interior
Portion, to reach dyeing purpose.In pretreatment fluid be added inorganic salts effect be promote coupling agent A wood surface absorption with
And it is permeated to wood internal.The effect of wetting agent is to speed up pretreatment fluid wetting wood single-plate surface and permeates to wood internal.
The invention has the following advantages that
1. this method is smaller on influences such as this body structure of timber and mechanical properties, fugitive color, through-dyeing be not good for products obtained therefrom, right
Subsequent technique has no adverse effects.
2. after this method dyes, even dyeing inside and outside veneer remains the original wood grain sense of timber, passes through choosing
Different aromatic primary amine analog derivatives is selected, veneer directly can be dyed to the color of rare timber, to improve the additional of timber
Value.
3. simple, at low cost, the easy industrialization of the method for the present invention technological operation.
Specific embodiment
The present invention is further illustrated below by specific embodiment.
Embodiment 1
A. the preparation of pretreatment fluid: by 0.2g azoic coupling component AS(structural formula:), it is few
Amount sodium hydroxide and ethyl alcohol are tuned into pulpous state, add a small amount of boiling water to stir to dissolve, add remaining sodium hydroxide and water is configured to
Then the pretreatment fluid for being 1% containing azoic coupling component AS mass fraction, naoh concentration 5.0g/L add 1g sodium chloride, stir
Uniformly；
B. wood single-plate pre-processes: board using poplar board (thickness is about 1.2mm) to be dyed is impregnated in pretreatment fluid, bath raio
For 1:20, the wetting agent jfc of 0.1g is added, the 40kHz ultrasonication 60min at 40 DEG C enables azoic coupling component AS to be adsorbed onto
Wood surface and the great amount of hydroxy group penetrated into wood internal, with wood structure, carboxyl occur to interact and adsorb to deposit to
Wood chip is taken out in wood surface and inside；
C. the preparation of chromogenic reagent solution: weighing -5 nitroaniline of 0.12g 2- methyl, and the hydrochloric acid that 6ml mass fraction is 1% is added
Solution and 14ml water are ice-cooling to 4 DEG C, 0.06g sodium nitrite are gradually added under stirring, is stirred to react 20min at 4 DEG C；
D. it dyes: pretreated wood chip being immersed in chromogenic reagent solution, bath raio 1:20 is warming up to 15 DEG C, with phosphoric acid hydrogen two
Sodium adjusts pH value to 6.5, and coupling colour development 40min, taking-up is dried.
Embodiment 2
A. the preparation of pretreatment fluid: by 0.2g Naphthol AS-D (structural formula:),
A small amount of sodium hydroxide and ethyl alcohol are tuned into pulpous state, and a small amount of boiling water is added to stir to dissolve, and add remaining sodium hydroxide and water is prepared
At the pretreatment fluid for being 1% containing Naphthol AS-D mass fraction, then naoh concentration 5.7g/L adds 1.2g chlorination
Potassium stirs evenly；
B. wood single-plate pre-processes: board using poplar board (thickness is about 1.2mm) to be dyed is impregnated in pretreatment fluid, bath raio
For 1:20, the wetting agent jfc of 0.1g is added, 40kHz ultrasonication 50min, enables Naphthol AS-D to adsorb at 50 DEG C
Occur to interact to wood surface and the great amount of hydroxy group penetrated into wood internal, with wood structure, carboxyl and adsorbs deposition
To wood surface and inside, wood chip is taken out；
C. the preparation of chromogenic reagent solution: weighing 0.092g m-chloroaniline, be added hydrochloric acid solution that 5.5ml mass fraction is 1% and
14.5ml water is ice-cooling to 5 DEG C, 0.055g sodium nitrite is gradually added under stirring, is stirred to react 25min at 5 DEG C；
D. it dyes: pretreated wood chip being immersed in chromogenic reagent solution, bath raio 1:20 is warming up to 13 DEG C, with sodium acetate tune
PH value is saved to 6.2, coupling colour development 30min, taking-up is dried.
Using not preprocessed and dyeing board using poplar board as standard sample, with Datacolor colour photometer to example 1(sample 1)
With example 2(sample 2) obtained dyeing sample colour examining, as shown in table 1.
1 dyeability data value of table
| Sample | ΔL | Δa | Δb | Δc | ΔE | K/S |
| 1 | -13.76 | 13.84 | -3.07 | 7.42 | 19.76 | 1.7539 |
| 2 | -15.34 | 13.79 | -1.28 | 4.05 | 20.66 | 1.7785 |
Claims (9)
1. a kind of wood veneer dyeing method, which comprises the following steps:
A. the preparation of pretreatment fluid: being tuned into pulpous state for coupling agent A, a small amount of sodium hydroxide and ethyl alcohol, and a small amount of boiling water stirring is added to make it
Dissolution, adds remaining sodium hydroxide and water is configured to the pretreatment fluid for being 0.50-2.0% containing coupling agent A mass fraction, hydrogen
Oxidation na concn is 3.0-6.0g/L, inorganic salts sodium chloride, potassium chloride or sodium sulphate is then added, so that nothing in pretreatment fluid
The content of machine salt is 5-80g/L, is stirred evenly；
B. wood single-plate pre-processes: veneer to be dyed being impregnated in pretreatment fluid, bath raio 1:15-20, quality point is added
Number accounts for the wetting agents of pretreatment fluid 0.15-2.0%, the ultrasonication 30-180min at 30-60 DEG C, enables coupling agent A
Be adsorbed onto wood surface and penetrate into wood internal, with wood structure great amount of hydroxy group, carboxyl occur interact and adsorb
Wood surface and inside are deposited to, wood chip is taken out；
C. the preparation of chromogenic reagent solution: color developing agent B is dissolved in inorganic acid solution, is ice-cooling to 0-10 DEG C, under stirring gradually
Sodium nitrite is added, is stirred to react 1-30min at 0-10 DEG C；
D. it dyes: pretreated wood chip being immersed in chromogenic reagent solution, bath raio 1:15-20 is warming up to 10-20 DEG C, uses vinegar
Sour sodium, disodium hydrogen phosphate or sodium dihydrogen phosphate adjust pH value to 5-8, and coupling colour development 10-120min, taking-up is dried.
2. a kind of wood veneer dyeing method according to claim 1, it is characterised in that coupling agent A is in the step a
2- hydroxyl -3- naphthanilide analog derivative, general structure are as follows:,
Middle Ar is benzene, and substituent R is-H ,-CH3、-Cl、-OCH3、-NO2In one, two or three.
3. a kind of wood veneer dyeing method according to claim 1, it is characterised in that wetting agent is non-in the step b
Or mixtures thereof ionic or anionic wetting agents.
4. a kind of wood veneer dyeing method according to claim 1, it is characterised in that ultrasonic frequency in the step b
In 20k-130kHz.
5. a kind of wood veneer dyeing method according to claim 1, it is characterised in that color developing agent B is in the step c
Aromatic primary amine analog derivative, general structure are, wherein substituent R ' be-H ,-CH3、-OCH3、-Cl、-
NO21 or 2.
6. a kind of wood veneer dyeing method according to claim 1, it is characterised in that in the step c color developing agent B with
The molar ratio of coupling agent A is 1.0-1.2:1.
7. a kind of wood veneer dyeing method according to claim 1, it is characterised in that inorganic acid is salt in the step c
Acid, sulfuric acid or hydrobromic acid.
8. a kind of wood veneer dyeing method according to claim 1, it is characterised in that inorganic acid and aobvious in the step c
The molar ratio of toner B is 2.1-2.4:1.
9. a kind of wood veneer dyeing method according to claim 1, it is characterised in that in the step c sodium nitrite with
The molar ratio of color developing agent B is 1.03-1.2:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910676433.1A CN110434967A (en) | 2019-07-25 | 2019-07-25 | A kind of wood veneer dyeing method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910676433.1A CN110434967A (en) | 2019-07-25 | 2019-07-25 | A kind of wood veneer dyeing method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS527405A (en) * | 1975-06-30 | 1977-01-20 | Ibigawa Electric Ind Co Ltd | Method of dying woods |
| CN104369243A (en) * | 2014-12-12 | 2015-02-25 | 北京林业大学 | Ultrasonic-assisted wood veneer dyeing method |
| CN106078990A (en) * | 2016-08-12 | 2016-11-09 | 梅州市汇胜木制品有限公司 | The imitative precious colouring method of a kind of timber |
| CN108994996A (en) * | 2018-08-06 | 2018-12-14 | 中南林业科技大学 | The Inner dyeing method of timber |
-
2019
- 2019-07-25 CN CN201910676433.1A patent/CN110434967A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS527405A (en) * | 1975-06-30 | 1977-01-20 | Ibigawa Electric Ind Co Ltd | Method of dying woods |
| CN104369243A (en) * | 2014-12-12 | 2015-02-25 | 北京林业大学 | Ultrasonic-assisted wood veneer dyeing method |
| CN106078990A (en) * | 2016-08-12 | 2016-11-09 | 梅州市汇胜木制品有限公司 | The imitative precious colouring method of a kind of timber |
| CN108994996A (en) * | 2018-08-06 | 2018-12-14 | 中南林业科技大学 | The Inner dyeing method of timber |
Non-Patent Citations (2)
| Title |
|---|
| 何瑾馨编: "《染料化学》", 30 June 2004, 中国纺织出版社 * |
| 赵国俊主编: "《染料生产工艺学》", 31 October 1989, 成都科技大学出版 * |
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