CN110370408A - A kind of board using poplar board colouring method - Google Patents
A kind of board using poplar board colouring method Download PDFInfo
- Publication number
- CN110370408A CN110370408A CN201910676432.7A CN201910676432A CN110370408A CN 110370408 A CN110370408 A CN 110370408A CN 201910676432 A CN201910676432 A CN 201910676432A CN 110370408 A CN110370408 A CN 110370408A
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- CN
- China
- Prior art keywords
- board
- poplar
- added
- colouring method
- poplar board
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- B27K3/025—Controlling the process
-
- 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
- B27K3/52—Impregnating agents containing mixtures of inorganic and organic compounds
-
- 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)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
The invention discloses a kind of board using poplar board colouring methods, the following steps are included: board using poplar board to be dyed is impregnated in certain density sodium hydroxide solution, appropriate wetting agent is added, in 80-100 DEG C of processing 20-180min, removal part aqueous impurity simultaneously keeps single plate structure loose, takes out and washes and dry；A small amount of hot water is added in color developing agent A and is tuned into pulpous state, appropriate sodium nitrite is added, stirring is mixed well, this mixture is added slowly with stirring in 0-10 DEG C of inorganic acid solution, 5-30min is stirred to react；Pretreated board using poplar board is immersed in chromogenic reagent solution, bath raio 1:15-20 is warming up to 10-20 DEG C, adjusts pH value to 8-10 with alkaline agent, dyes 10-120min, taking-up is dried.The colouring method is easy to operate, is easy industrialization, board using poplar board 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 board using poplar board colouring method.
Background technique
The features such as poplar is a kind of fast-growing tree species, it is adaptable wide, growth period in year is long, speed of production is fast,
Wood is tough and tensile, and mechanical strength is higher, has many advantages, such as that light-weight, elasticity is good, fiber is long and easy processing.
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 board using poplar board colouring methods, and the colouring method is easy to operate, are easy industry
Change, board using poplar board can be dyed to the color of rare timber, improve its added value.
A kind of board using poplar board colouring method, it is characterised in that the following steps are included:
A. veneer pre-processes: board using poplar board to be dyed being impregnated in the sodium hydroxide solution of 3-20g/L, bath raio 1:15-
20, the wetting agent that mass fraction accounts for sodium hydroxide solution 0.15-2% is added, in 80-100 DEG C of processing 20-180min, removes part
Water-solubility impurity simultaneously keeps single plate structure loose, takes out and washes and dry；
B. the preparation of chromogenic reagent solution: being added a small amount of hot water for color developing agent A and be tuned into pulpous state, adds sodium nitrite, and stirring is adjusted
It is even, then this mixture is added slowly with stirring in 0-10 DEG C of inorganic acid solution, is stirred to react 5-30min；
C. it dyeing: pretreated board using poplar board is immersed in chromogenic reagent solution, bath raio 1:15-20 is warming up to 10-20 DEG C,
PH value is adjusted to 8-10 with alkaline agent, dyes 10-120min, taking-up is dried.
Wetting agent is or mixtures thereof non-ionic or anionic wetting agent in the step a.
Color developing agent A is aromatic primary amine analog derivative in the step b, and general structure is, wherein
Substituent R is-H ,-CH3、-OCH3、-Cl、-NO21 or 2.
Inorganic acid is hydrochloric acid, sulfuric acid or hydrobromic acid in the step b.
The molar ratio of inorganic acid and color developing agent A are 2.1-2.4:1 in the step b.
The molar ratio of sodium nitrite and color developing agent A are 1.03-1.15:1 in the step b.
Alkaline agent is sodium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate, sodium bicarbonate, disodium hydrogen phosphate in the step c
Or sodium acetate.
The present invention dyes board using poplar board with aromatic primary amine analog derivative, and principle is fragrance in acid condition
Primary amine derivative can be reacted with sodium nitrite generates diazonium salt, this compound can be with wood surface and interior under certain pH conditions
Coupling reaction occurs for the natural polyphenol class compound that portion itself is contained, and generates coloured azo compound and develops the color, to reach
To dyeing purpose.Meanwhile the pretreatment of board using poplar board also can promote and contain in timber other than timber swelling can be made to discongest
Part natural polyphenol compound hydrolysis generates small molecule polyphenol compound, to be easier to and be adsorbed onto wood surface or penetrate into
The diazonium salt of wood internal occurs coupling reaction and develops the color.The effect of wetting agent is to speed up pretreatment fluid wetting wood single-plate surface
And it is permeated to wood internal.
Advantages of the present invention:
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, poplar 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. veneer pre-processes: the sodium hydroxide that 1.0g board using poplar board (thickness is about 1.2mm) to be dyed is impregnated in 6g/L is molten
In liquid, the wetting agent that mass fraction accounts for sodium hydroxide solution 0.5% is added in bath raio 1:15, in 95 DEG C of processing 40min, removes part
Water-solubility impurity simultaneously keeps single plate structure loose, takes out and washes and dry；
B. the preparation of chromogenic reagent solution: a small amount of hot water is added in 0.02g 2- methyl-5-nitro aniline and is tuned into pulpous state, is added
0.01g sodium nitrite, stirring are mixed well, and then this mixture is added slowly with stirring to 4 DEG C containing mass fraction is
In 0.05% hydrochloric acid solution, it is stirred to react 20min；
C. it dyes: pretreated board using poplar board being immersed in chromogenic reagent solution, bath raio 1:20 is warming up to 16 DEG C, uses hydrogen-oxygen
Change sodium and adjust pH value to 7.9,8.7 and 9.4, dyes 30min, taking-up is dried.
Embodiment 2
A. veneer pre-processes: 1.0g board using poplar board to be dyed is impregnated in the sodium hydroxide solution of 12g/L, bath raio 1:15,
The wetting agent that mass fraction accounts for sodium hydroxide solution 0.7% is added, in 90 DEG C of processing 25min, removes part aqueous impurity and makes
Single plate structure is loose, takes out and washes and dry；
B. the preparation of chromogenic reagent solution: a small amount of hot water is added in 0.03g m-chloroaniline and is tuned into pulpous state, adds 0.018g nitrous
Sour sodium, stirring are mixed well, and then this mixture is added slowly with stirring to 3 DEG C of 20mL and contains the salt that mass fraction is 0.1%
In acid solution, it is stirred to react 20min；
C. it dyes: pretreated board using poplar board being immersed in chromogenic reagent solution, bath raio 1:20 is warming up to 15 DEG C, uses hydrogen-oxygen
Change potassium and adjust pH value to 9.1, dyes 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 1,2
With 3) and example 2(sample 4) obtained dyeing sample colour examining, as shown in table 1.
1 dyeability data value of table
| Sample | PH value | ΔL | Δa | Δb | Δc | ΔE | K/S |
| 1 | 7.9 | -23.05 | 17.93 | -4.57 | 4.39 | 29.56 | 2.3875 |
| 2 | 8.7 | -19.67 | 20.09 | -2.39 | 7.44 | 28.22 | 1.7627 |
| 3 | 9.4 | -19.24 | 20.40 | -2.49 | 7.61 | 28.15 | 1.6590 |
| 4 | 9.1 | -17.16 | 17.27 | -0.56 | 7.48 | 24.35 | 1.7718 |
Claims (7)
1. a kind of board using poplar board colouring method, which comprises the following steps:
A. veneer pre-processes: board using poplar board to be dyed being impregnated in the sodium hydroxide solution of 3-20g/L, bath raio 1:15-
20, the wetting agent that mass fraction accounts for sodium hydroxide solution 0.15-2% is added, in 80-100 DEG C of processing 20-180min, removes part
Water-solubility impurity simultaneously keeps single plate structure loose, takes out and washes and dry；
B. the preparation of chromogenic reagent solution: being added a small amount of hot water for color developing agent A and be tuned into pulpous state, adds sodium nitrite, and stirring is adjusted
It is even, then this mixture is added slowly with stirring in 0-10 DEG C of inorganic acid solution, is stirred to react 5-30min；
C. it dyeing: pretreated board using poplar board is immersed in chromogenic reagent solution, bath raio 1:15-20 is warming up to 10-20 DEG C,
PH value is adjusted to 8-10 with alkaline agent, dyes 10-120min, taking-up is dried.
2. a kind of board using poplar board colouring method according to claim 1, it is characterised in that wetting agent is non-in the step a
Or mixtures thereof ionic or anionic wetting agents.
3. a kind of board using poplar board colouring method according to claim 1, it is characterised in that color developing agent A is in the step b
Aromatic primary amine analog derivative, general structure are, wherein substituent R is-H ,-CH3、-OCH3、-Cl、-NO2
1 or 2.
4. a kind of board using poplar board colouring method according to claim 1, it is characterised in that inorganic acid is salt in the step b
Acid, sulfuric acid or hydrobromic acid.
5. a kind of board using poplar board colouring method according to claim 1, it is characterised in that inorganic acid and aobvious in the step b
The molar ratio of toner A is 2.1-2.4:1.
6. a kind of board using poplar board colouring method according to claim 1, it is characterised in that in the step b sodium nitrite with
The molar ratio of color developing agent A is 1.03-1.15:1.
7. a kind of board using poplar board colouring method according to claim 1, it is characterised in that alkaline agent is hydrogen-oxygen in the step c
Change sodium, potassium hydroxide, sodium carbonate, potassium carbonate, sodium bicarbonate, disodium hydrogen phosphate or sodium acetate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910676432.7A CN110370408A (en) | 2019-07-25 | 2019-07-25 | A kind of board using poplar board colouring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910676432.7A CN110370408A (en) | 2019-07-25 | 2019-07-25 | A kind of board using poplar board colouring method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110370408A true CN110370408A (en) | 2019-10-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910676432.7A Pending CN110370408A (en) | 2019-07-25 | 2019-07-25 | A kind of board using poplar board colouring method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110370408A (en) |
Citations (2)
| 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 |
| 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 CN201910676432.7A patent/CN110370408A/en active Pending
Patent Citations (2)
| 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 |
| 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 (1)
| Title |
|---|
| 赵国俊主编: "《染料生产工艺学》", 31 October 1989, 成都科技大学出版社 * |
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