CN110922813A - Anionic veneer dyeing material and preparation process thereof - Google Patents
Anionic veneer dyeing material and preparation process thereof Download PDFInfo
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- CN110922813A CN110922813A CN201911234967.5A CN201911234967A CN110922813A CN 110922813 A CN110922813 A CN 110922813A CN 201911234967 A CN201911234967 A CN 201911234967A CN 110922813 A CN110922813 A CN 110922813A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D15/00—Woodstains
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Abstract
The invention discloses an anionic veneer dyeing material and a preparation process thereof, wherein the anionic veneer dyeing material comprises the following components in parts by weight: 20-25 parts of resin; 30-35 parts of an anionic dye; cetyl trimethylammonium chloride, 1.5-1.8 parts; 2-3 parts of lignosulfonate; 2.1-2.5 parts of bisphenol-A polyoxyethylene ether; 2-3 parts of a closed water-based isocyanate crosslinking agent; 15-20 parts of deionized water; the preparation process comprises the following steps: A. pouring the resin, the hexadecyl trimethyl ammonium chloride and the lignosulfonate into a negative pressure vacuum tank to obtain a product B; C. and pouring the product B, half of anionic dye, bisphenol-A polyoxyethylene ether, the rest anionic dye, the blocked water-based isocyanate crosslinking agent and deionized water into a high-pressure stirring tank, and uniformly stirring to obtain a finished product. The invention has the characteristics of effectively improving the color fastness and improving the dyeing efficiency.
Description
Technical Field
The invention relates to a dyeing material, in particular to an anionic veneer dyeing material and a preparation process thereof.
Background
In the growing process of the wood, the wood is influenced by the external environment and may have defects such as color change, wormholes and the like, the wood is not suitable for being used as a plate independently, in order to reasonably utilize the wood, researchers cut the wood into veneers, then treat the defects on the surface of the wood by using a dyeing technology, and a beautiful and exquisite novel decorative material can be manufactured after coloring. Veneer dyeing, solid wood dyeing, standing wood dyeing and other methods are commonly used for veneer dyeing; the veneer dyeing means that the veneer obtained by rotary cutting or slicing is uniformly dyed by an impregnation method, the thickness of the veneer is generally 0.2-1 mm, and the dyed veneer can be used as a component material of artificial board veneers, furniture veneers and artificial simulated wood. However, because the existing veneer dyeing material has general permeability, when the veneer is dyed by dipping and dyeing, only the surface layer of the veneer is often dyed, and the color fastness performance of the existing dye is also general, so that the dyed veneer can fade after being used for a short period of time; meanwhile, the time required for dyeing the veneer by using the existing dye is longer. Therefore, the prior art has the problems of poor color fastness performance and low dyeing efficiency.
Disclosure of Invention
The invention aims to provide an anionic veneer dyeing material and a preparation process thereof. The invention has the characteristics of effectively improving the color fastness and improving the dyeing efficiency.
The technical scheme of the invention is as follows: an anionic veneer dyeing material is prepared from the following components in parts by weight: 20-25 parts of resin; 30-35 parts of an anionic dye; cetyl trimethylammonium chloride, 1.5-1.8 parts; 2-3 parts of lignosulfonate; 2.1-2.5 parts of bisphenol-A polyoxyethylene ether; 2-3 parts of a closed water-based isocyanate crosslinking agent; 15-20 parts of deionized water.
The anionic veneer dyeing material is prepared from the following components in parts by weight: 22 parts of resin; 32 parts of anionic dye; cetyl trimethylammonium chloride, 1.6 parts; lignosulfonate, 2.5 parts; 2.3 parts of bisphenol-A polyoxyethylene ether; 2.5 parts of a closed water-based isocyanate crosslinking agent; deionized water, 18 parts.
In the anionic bark dyeing material, the resin includes an anionic aqueous polyurethane resin and an anionic acrylic resin, and the weight ratio of the anionic aqueous polyurethane resin to the anionic acrylic resin is 2: 1-3:1.
In the anionic wood veneer dyeing material, the anionic dye is an acid dye neutralizer.
A preparation process of an anionic veneer dyeing material comprises the following steps:
A. pouring the resin into a negative pressure vacuum tank, heating and stirring the organic resin, and uniformly stirring to obtain a product A;
B. pouring cetyl trimethylammonium chloride and lignosulfonate into a negative pressure vacuum tank to be mixed with the product A, and uniformly stirring to obtain a product B;
C. mixing product B and half of anionic dye in a high-pressure stirring tank, and stirring for 40-50min to obtain product C;
D. pouring bisphenol-A polyoxyethylene ether into a high-pressure stirring tank to be mixed with the product C, and uniformly stirring to obtain a product D;
E. pouring the residual anionic dye into a high-pressure stirring tank to be mixed with the product D, and uniformly stirring to obtain a product E; the pressure of the high-pressure stirring tank is 3.1-3.3MPa, the temperature in the high-pressure stirring tank is 50-60 ℃, and the stirring time is 15-25 min;
F. pouring the closed water-based isocyanate crosslinking agent and deionized water into a high-pressure stirring tank to be mixed with the product E, and uniformly stirring to obtain a finished product; the pressure of the high-pressure stirring tank is 4.2-4.5MPa, the temperature in the high-pressure stirring tank is 80-85 ℃, and the stirring time is 80-100 min.
In the process of the anionic veneer dyeing material, in the step A, the temperature in the negative pressure vacuum tank is 40-50 ℃, and the stirring time is 50-60 min.
In the process of the anionic veneer dyeing material, in the step B, the temperature in the negative pressure vacuum tank is 50-60 ℃, and the stirring time is 10-15 min.
In the process for the anionic veneer dyeing material, in the step C and the step D, the pressure of a high-pressure stirring tank is 2.2-2.5MPa, the temperature in the high-pressure stirring tank is 65-70 ℃, and the stirring time is 40-50 min.
Compared with the prior art, the dyeing material of the invention consists of resin, anionic dye, hexadecyl trimethyl ammonium chloride, lignosulfonate, bisphenol-A polyoxyethylene ether, closed type water-based isocyanate crosslinking agent and deionized water, wherein the resin is formed by mixing anionic type water-based polyurethane resin and anionic type acrylic resin according to a specific proportion, the resin is matched with various auxiliary agents, and the specific preparation process and steps of the dyeing material are reasonably optimized (by adopting a mode of heating and mixing the resin under negative pressure and mixing the auxiliary agent and the anionic dye under high pressure, the auxiliary agent and the anionic dye can be better permeated into the resin, and the combination fastness among the auxiliary agent, the anionic dye and the resin can be improved), so that the anionic dye can be well dissolved in the resin, the anionic dye is wrapped by the resin, the adhesion performance of the anionic dye can be effectively improved, the color fastness performance of the dye can be improved, the performance of the penetrant is exerted to the optimal state by reasonably optimizing the proportion and the adding sequence of bisphenol-A polyoxyethylene ether (penetrant), namely, the penetrant and the anionic dye can be firmly combined together, so that the penetrant can drive the anionic dye to permeate synchronously, the permeability of the dye can be effectively improved, and the dyeing efficiency can be improved (the dyeing efficiency can be improved by more than 30%); and resin and a closed water-based isocyanate crosslinking agent are matched, so that the anionic dye can be firmly attached to the interior of the wood veneer, and the wood veneer has good yellowing resistance. In conclusion, the invention has the characteristics of effectively improving the color fastness and improving the dyeing efficiency.
Detailed Description
The present invention is further illustrated by the following examples, which are not to be construed as limiting the invention.
Example 1. An anionic veneer dyeing material is prepared from the following components in parts by weight: 20-25 parts of resin; 30-35 parts of an anionic dye; cetyl trimethylammonium chloride, 1.5-1.8 parts; 2-3 parts of lignosulfonate; 2.1-2.5 parts of bisphenol-A polyoxyethylene ether; 2-3 parts of a closed water-based isocyanate crosslinking agent; 15-20 parts of deionized water.
The anionic dye is an acid dye neutralizer.
The acid dye neutralization body is an acid complex dye, the acid complex dye does not contain sulfonic groups, but contains hydrophilic groups such as sulfonamide groups and the like, and the ratio of metal atoms in molecules to dye molecules is 1:2, so the acid dye neutralization body is also called as a 1:2 metal complex dye.
The resin comprises anionic waterborne polyurethane resin and anionic acrylic resin, and the weight ratio of the anionic waterborne polyurethane resin to the anionic acrylic resin is 2: 1-3:1.
A preparation process of an anionic veneer dyeing material comprises the following steps:
A. pouring the resin into a negative pressure vacuum tank, heating and stirring the organic resin, and uniformly stirring to obtain a product A;
B. pouring cetyl trimethylammonium chloride and lignosulfonate into a negative pressure vacuum tank to be mixed with the product A, and uniformly stirring to obtain a product B;
C. mixing product B and half of anionic dye in a high-pressure stirring tank, and stirring for 40-50min to obtain product C;
D. pouring bisphenol-A polyoxyethylene ether into a high-pressure stirring tank to be mixed with the product C, and uniformly stirring to obtain a product D;
E. pouring the residual anionic dye into a high-pressure stirring tank to be mixed with the product D, and uniformly stirring to obtain a product E; the pressure of the high-pressure stirring tank is 3.1-3.3MPa, the temperature in the high-pressure stirring tank is 50-60 ℃, and the stirring time is 15-25 min.
F. Pouring the closed water-based isocyanate crosslinking agent and deionized water into a high-pressure stirring tank to be mixed with the product E, and uniformly stirring to obtain a finished product; the pressure of the high-pressure stirring tank is 4.2-4.5MPa, the temperature in the high-pressure stirring tank is 80-85 ℃, and the stirring time is 80-100 min.
In the step A, the temperature in the negative pressure vacuum tank is 40-50 ℃, and the stirring time is 50-60 min.
In the step B, the temperature in the negative pressure vacuum tank is 50-60 ℃, and the stirring time is 10-15 min.
In the step C and the step D, the pressure of the high-pressure stirring tank is 2.2-2.5MPa, the temperature in the high-pressure stirring tank is 65-70 ℃, and the stirring time is 40-50 min.
The high-pressure stirring tank comprises a tank body, a rotating shaft is arranged at the central position of the bottom of the tank body, a rotating motor positioned below the tank body is arranged at the lower end of the rotating shaft, and a rotating blade positioned in the tank body is arranged at the upper end of the rotating shaft; the jar body upper end is equipped with the upper cover, and the upper cover top is equipped with agitator motor, and the agitator motor output is equipped with the (mixing) shaft that is located the jar internal, is equipped with the stirring vane who is the annular distribution on the (mixing) shaft, and stirring vane is located the jar internal. The upper cover is provided with a feed inlet, the upper part in the tank body is also provided with a feed hopper with a conical structure, the position of the feed hopper corresponds to that of the rotating blade, and the feed hopper is positioned above the stirring blade.
And the upper end enclosure is also provided with a pressurizing mechanism for controlling the air pressure in the tank body.
The outer wall of the tank body is also provided with a jacket, and an electric heating wire is arranged in the jacket and used for controlling the temperature in the tank body.
The stirring blades and the rotating blades rotate in opposite directions, so that the materials can be stirred in multiple dimensions.
Rotatory blade's rotation can make liquid be the vortex form, with inside the material drops into the agitator from the feeder hopper, just contacts with the liquid of vortex form mutually, the quick dissolution of the material of being convenient for improves stirring efficiency, improves stirring effect.
Example 2. An anionic veneer dyeing material is prepared from the following components in parts by weight: 22 parts of resin; 32 parts of anionic dye; cetyl trimethylammonium chloride, 1.6 parts; lignosulfonate, 2.5 parts; 2.3 parts of bisphenol-A polyoxyethylene ether; 2.5 parts of a closed water-based isocyanate crosslinking agent; deionized water, 18 parts.
The anionic dye is an acid dye neutralizer.
The acid dye neutralization body is an acid complex dye, the acid complex dye does not contain sulfonic groups, but contains hydrophilic groups such as sulfonamide groups and the like, and the ratio of metal atoms in molecules to dye molecules is 1:2, so the acid dye neutralization body is also called as a 1:2 metal complex dye.
The resin comprises anionic waterborne polyurethane resin and anionic acrylic resin, and the weight ratio of the anionic waterborne polyurethane resin to the anionic acrylic resin is 2: 1.
a preparation process of an anionic veneer dyeing material comprises the following steps:
A. pouring the resin into a negative pressure vacuum tank, heating and stirring the organic resin, and uniformly stirring to obtain a product A;
B. pouring cetyl trimethylammonium chloride and lignosulfonate into a negative pressure vacuum tank to be mixed with the product A, and uniformly stirring to obtain a product B;
C. pouring the product B and half of the amount of anionic dye into a high-pressure stirring tank for mixing, and stirring for 45min to obtain a product C;
D. pouring bisphenol-A polyoxyethylene ether into a high-pressure stirring tank to be mixed with the product C, and uniformly stirring to obtain a product D;
E. pouring the residual anionic dye into a high-pressure stirring tank to be mixed with the product D, and uniformly stirring to obtain a product E; the pressure of the high-pressure stirring tank is 3.2MPa, the temperature in the high-pressure stirring tank is 55 ℃, and the stirring time is 20 min.
F. Pouring the closed water-based isocyanate crosslinking agent and deionized water into a high-pressure stirring tank to be mixed with the product E, and uniformly stirring to obtain a finished product; the pressure of the high-pressure stirring tank is 4.3MPa, the temperature in the high-pressure stirring tank is 83 ℃, and the stirring time is 90 min.
In the step A, the temperature in the negative pressure vacuum tank is 45 ℃, and the stirring time is 55 min.
In the step B, the temperature in the negative pressure vacuum tank is 55 ℃, and the stirring time is 12 min.
In the step C and the step D, the pressure of the high-pressure stirring tank is 2.3MPa, the temperature in the high-pressure stirring tank is 67 ℃, and the stirring time is 45 min.
The high-pressure stirring tank comprises a tank body, a rotating shaft is arranged at the central position of the bottom of the tank body, a rotating motor positioned below the tank body is arranged at the lower end of the rotating shaft, and a rotating blade positioned in the tank body is arranged at the upper end of the rotating shaft; the jar body upper end is equipped with the upper cover, and the upper cover top is equipped with agitator motor, and the agitator motor output is equipped with the (mixing) shaft that is located the jar internal, is equipped with the stirring vane who is the annular distribution on the (mixing) shaft, and stirring vane is located the jar internal. The upper cover is provided with a feed inlet, the upper part in the tank body is also provided with a feed hopper with a conical structure, the position of the feed hopper corresponds to that of the rotating blade, and the feed hopper is positioned above the stirring blade.
And the upper end enclosure is also provided with a pressurizing mechanism for controlling the air pressure in the tank body.
The outer wall of the tank body is also provided with a jacket, and an electric heating wire is arranged in the jacket and used for controlling the temperature in the tank body.
The stirring blades and the rotating blades rotate in opposite directions, so that the materials can be stirred in multiple dimensions.
Rotatory blade's rotation can make liquid be the vortex form, with inside the material drops into the agitator from the feeder hopper, just contacts with the liquid of vortex form mutually, the quick dissolution of the material of being convenient for improves stirring efficiency, improves stirring effect.
Table 1 shows a comparison of properties between the dyed veneers obtained by dyeing the veneer dyed material of example 2 using the same dyeing process and the dyed veneers obtained using the conventional veneer dyed material on the market. As can be seen from the table, the wood veneer dyed with the dyeing material of the invention has not only good color fastness to light and color change resistance, but also good yellowing resistance.
TABLE 1
Claims (8)
1. The anionic veneer dyeing material is characterized by comprising the following components in parts by weight: 20-25 parts of resin; 30-35 parts of an anionic dye; cetyl trimethylammonium chloride, 1.5-1.8 parts; 2-3 parts of lignosulfonate; 2.1-2.5 parts of bisphenol-A polyoxyethylene ether; 2-3 parts of a closed water-based isocyanate crosslinking agent; 15-20 parts of deionized water.
2. The anionic veneer dyeing material according to claim 1, which is characterized by comprising the following components in parts by weight: 22 parts of resin; 32 parts of anionic dye; cetyl trimethylammonium chloride, 1.6 parts; lignosulfonate, 2.5 parts; 2.3 parts of bisphenol-A polyoxyethylene ether; 2.5 parts of a closed water-based isocyanate crosslinking agent; deionized water, 18 parts.
3. The anionic wood veneer dyeing material according to claim 1 or 2, characterized in that: the resin comprises anionic waterborne polyurethane resin and anionic acrylic resin, and the weight ratio of the anionic waterborne polyurethane resin to the anionic acrylic resin is 2: 1-3:1.
4. The anionic wood veneer dyeing material according to claim 1 or 2, characterized in that: the anionic dye is an acid dye neutralizer.
5. Process for the preparation of an anionic wood veneer dyeing material according to any one of claims 1 to 4, characterized in that it comprises the following steps:
A. pouring the resin into a negative pressure vacuum tank, heating and stirring the organic resin, and uniformly stirring to obtain a product A;
B. pouring cetyl trimethylammonium chloride and lignosulfonate into a negative pressure vacuum tank to be mixed with the product A, and uniformly stirring to obtain a product B;
C. mixing product B and half of anionic dye in a high-pressure stirring tank, and stirring for 40-50min to obtain product C;
D. pouring bisphenol-A polyoxyethylene ether into a high-pressure stirring tank to be mixed with the product C, and uniformly stirring to obtain a product D;
E. pouring the residual anionic dye into a high-pressure stirring tank to be mixed with the product D, and uniformly stirring to obtain a product E; the pressure of the high-pressure stirring tank is 3.1-3.3MPa, the temperature in the high-pressure stirring tank is 50-60 ℃, and the stirring time is 15-25 min;
F. pouring the closed water-based isocyanate crosslinking agent and deionized water into a high-pressure stirring tank to be mixed with the product E, and uniformly stirring to obtain a finished product; the pressure of the high-pressure stirring tank is 4.2-4.5MPa, the temperature in the high-pressure stirring tank is 80-85 ℃, and the stirring time is 80-100 min.
6. The process of claim 5, wherein the anionic wood veneer dyeing material comprises the following steps: in the step A, the temperature in the negative pressure vacuum tank is 40-50 ℃, and the stirring time is 50-60 min.
7. The process of claim 5, wherein the anionic wood veneer dyeing material comprises the following steps: in the step B, the temperature in the negative pressure vacuum tank is 50-60 ℃, and the stirring time is 10-15 min.
8. The process of claim 5, wherein the anionic wood veneer dyeing material comprises the following steps: in the step C and the step D, the pressure of the high-pressure stirring tank is 2.2-2.5MPa, the temperature in the high-pressure stirring tank is 65-70 ℃, and the stirring time is 40-50 min.
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| CN201911234967.5A CN110922813A (en) | 2019-12-05 | 2019-12-05 | Anionic veneer dyeing material and preparation process thereof |
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| CN201911234967.5A CN110922813A (en) | 2019-12-05 | 2019-12-05 | Anionic veneer dyeing material and preparation process thereof |
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Cited By (1)
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| CN106010184A (en) * | 2016-06-22 | 2016-10-12 | 合肥科天水性科技有限责任公司 | Waterborne furniture primer and preparation method thereof and wood finishing construction technology |
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