CN108299951B - Nano-level black color paste and preparation method and application thereof - Google Patents
Nano-level black color paste and preparation method and application thereof Download PDFInfo
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- CN108299951B CN108299951B CN201810217850.5A CN201810217850A CN108299951B CN 108299951 B CN108299951 B CN 108299951B CN 201810217850 A CN201810217850 A CN 201810217850A CN 108299951 B CN108299951 B CN 108299951B
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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
- C09D17/00—Pigment pastes, e.g. for mixing in paints
- C09D17/004—Pigment pastes, e.g. for mixing in paints containing an inorganic pigment
- C09D17/005—Carbon black
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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
- C09D17/00—Pigment pastes, e.g. for mixing in paints
- C09D17/002—Pigment pastes, e.g. for mixing in paints in organic medium
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/04—Pigments
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/445—Use of auxiliary substances before, during or after dyeing or printing
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/52—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing synthetic macromolecular substances
- D06P1/5207—Macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- D06P1/525—Polymers of unsaturated carboxylic acids or functional derivatives thereof
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/673—Inorganic compounds
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
- Paints Or Removers (AREA)
Abstract
The invention provides nanoscale black color paste and a preparation method and application thereof, and relates to the technical field of chemical textile. The nanometer black color paste comprises the following components in percentage by weight: 15-25% of carbon black, 5-30% of a dispersant and 50-75% of a solvent, wherein the solvent is preferably dimethylacetamide. The color paste has the advantages of uniform color, good covering power, low viscosity and no blocking. A preparation method of nano black paste comprises the following steps: carbon black, a dispersant and a solvent are mixed. The preparation method is simple to operate and can be used for large-scale production.
Description
Technical Field
The invention relates to the technical field of chemical textile, in particular to a nano black color paste and a preparation method and application thereof.
Background
The dyeing technique is a technique for dyeing an object to be dyed with a dye. Generally refers to a technique for dyeing textiles. Modern textile dyeing began in the 18 th century and was gradually established with the development of chemical fibers, dyes and chemicals, and equipment. With the continuous improvement of the quality of life of people and the continuous development of modern new materials, the appearance of new fibers is faster and faster, and the varieties are more and more. The "new" and "many" of fibers and textiles place new demands on textile dyeing.
The color paste is a semi-product formed by dispersing pigment or pigment and filling material in the paint vehicle. The pure oil is taken as the adhesive to be called oily color paste. Resin paint is used as adhesive and is called resin color paste. The pigment and filler pulp which is formed by dispersing water as a medium and adding a surfactant becomes the water-based color paste. The color paste used at present is suitable for a fiber dyeing process, the color paste can crack at high temperature, and the cracked substances are accumulated day by day to cause the corrosion damage of production equipment.
Disclosure of Invention
The invention aims to provide a nanoscale black color paste which is uniform in color, good in covering power, low in viscosity and free of plate blockage.
The invention also aims to provide a preparation method of the nano black color paste, which is simple to operate and can be used for large-scale production.
The invention also aims to provide application of the nano black color paste in fiber dyeing.
The technical problem to be solved by the invention is realized by adopting the following technical scheme:
the nanometer black color paste comprises the following components in percentage by weight: 15-25% of carbon black, 5-30% of a dispersant and 50-75% of a solvent, wherein the solvent is preferably dimethylacetamide.
A preparation method of nano black paste comprises the following steps: carbon black, a dispersant and a solvent are mixed.
The application of the nano black color paste in the aspect of fiber dyeing is disclosed.
The nano-scale black color paste, the preparation method and the application thereof have the beneficial effects that:
the nano-scale black color paste prepared by the invention adopts carbon black as a raw material and has the characteristics of low viscosity, high temperature resistance and good stability. The prepared color paste has the characteristics of heat resistance, light resistance, high temperature resistance, no color change, strong tinting strength, low viscosity and good covering power. The carbon black adopted by the invention is not subjected to organic surface modification, so that the cracking of organic matters is avoided, and the equipment is prevented from being corroded. Acrylic copolymer is selected as a dispersing agent, and dimethylacetamide is selected as a solvent, the dispersing agent can strongly disperse stable carbon black in the dimethylacetamide solvent, and the pigment color spreading is assisted, so that the color paste shows good gloss. The preparation method of the nanoscale black color paste provided by the invention is simple to operate and can be used for large-scale production.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below. It is appreciated that the following drawings depict only certain embodiments of the invention and are therefore not to be considered limiting of its scope. For a person skilled in the art, it is possible to derive other relevant figures from these figures without inventive effort.
FIG. 1 is a graph showing the results of tests on a synthetic fiber dyeing line provided in test example 1 of the present invention;
FIG. 2 is a block board condition diagram of a color paste provided in embodiment 1 of the present invention;
FIG. 3 is a graph showing the blocking of color pastes according to comparative examples 1 and 2.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
The nano-scale black color paste and the preparation method and application thereof of the embodiment of the invention are specifically explained below.
The embodiment of the invention provides a nano black color paste, which comprises the following components in percentage by weight: 15-25% of carbon black, 5-30% of a dispersant and 50-75% of a solvent, wherein the solvent is preferably dimethylacetamide. Further, in a preferred embodiment of the present invention, the carbon black is 20 wt%, the dispersant is 15-20 wt%, and the solvent is 60-65 wt%. Preferably, the weight percentage of the dispersing agent is 16%, 17% and 19%, and the weight percentage of the solvent is 61%, 62%, 63% and 64%.
The nano-scale black color paste provided by the invention can be used for dyeing polyimide fibers. The polyimide fiber is characterized by long-term temperature resistance (300 ℃), higher short-term high temperature resistance and stable size (30 minutes at 280 ℃, and the dry heat shrinkage rate is less than 0.3%). Compared with other similar fibers, the special chemical structure of the fiber is more resistant to acid, alkali corrosion and hydrolysis, so that the production process has severer conditions on color paste. The invention adopts carbon black as a raw material, and the carbon black is light, loose and superfine black powder. And has the characteristics of low viscosity, high temperature resistance and good stability.
In the prior art, in order to realize the nano dispersion of the carbon black, the surface of the carbon black is subjected to organic surface modification, so that at high temperature, organic matters are cracked at high temperature, and a lysate corrodes equipment to cause equipment damage. The carbon black adopted by the invention is not subjected to organic surface modification, so that the cracking of organic matters is avoided, and the equipment is prevented from being corroded.
The particle size of the carbon black adopted by the invention is 8-30 nm, preferably 20-24 nm. The particle size of the carbon black is in nanometer level, which is helpful for the dispersion of the carbon black and avoids the agglomeration of the carbon black. The oil absorption of the carbon black is 70 to 100cc/100gm, the volatility is 1 to 3%, and the color strength is 100 to 150. Further, in a preferred embodiment of the present invention, the oil absorption of the carbon black is 90 to 100cc/100gm, the volatility is 2 to 3%, and the tinting strength is 100 to 130. Under the condition, the carbon black has heat resistance, light resistance, migration resistance, strong tinting strength and no discoloration.
The invention selects acrylic copolymer as dispersant and dimethyl acetamide as solvent, and prepares high-concentration pulpy nano-scale color paste under the condition of mechanical stirring, and the acrylic copolymer and the dimethyl acetamide ensure that the carbon black has excellent dispersibility and stability.
Furthermore, the PDI (poly-dispersion index) of the acrylic copolymer selected by the invention has narrow distribution, the ammonia value is less than 20mg KOH/g, and the density is close to 0.9366(25/4 ℃). The dispersing agent can strongly disperse and stabilize carbon black in a dimethyl acetamide solvent, and helps pigment color development, so that the color paste shows good gloss.
The preparation method of the nano black color paste provided by the embodiment of the invention comprises the following steps:
weighing carbon black, acrylic copolymer serving as a dispersing agent and dimethyl acetamide according to the weight percentage, and adding the carbon black, the acrylic copolymer serving as the dispersing agent and the dimethyl acetamide into the dispersing agent for dispersing. Preferably, the dimethyl acetamide solvent is added firstly, and then the acrylic copolymer polymer serving as the dispersing agent and the carbon black are added, so that the dispersion stability of the carbon black is higher.
The nano black color paste provided by the invention has the characteristics of heat resistance, light resistance, high temperature resistance, no color change, strong tinting strength, low viscosity and good covering power, has good compatibility with the original rubber resin, does not block the board, and can be used in the field of fiber dyeing.
The features and properties of the present invention are described in further detail below with reference to examples.
Example 1
The embodiment provides a nanoscale black color paste which is mainly prepared by the following steps:
weighing 20% of carbon black, 8% of dispersant acrylic copolymer and 72% of dimethylacetamide solvent according to weight percentage. The carbon black had an average particle diameter of 24nm, an oil absorption of 100cc/100gm, a volatility of 2.5% and a color strength of 124. The PDI distribution of the acrylic copolymer is narrow, the ammonia value is less than 20mg KOH/g, and the density is close to 0.9366(25/4 ℃).
And uniformly mixing the carbon black, the acrylic copolymer serving as a dispersing agent and a dimethylacetamide solvent by adopting the dispersing agent to obtain the color paste.
Example 2
The embodiment provides a nanoscale black color paste which is mainly prepared by the following steps:
weighing 20% of carbon black, 12% of dispersant acrylic copolymer and 68% of dimethylacetamide solvent according to weight percentage. The carbon black had an average particle diameter of 22nm, an oil absorption of 100cc/100gm, a volatility of 2% and a color strength of 122. The PDI distribution of the acrylic copolymer is narrow, the ammonia value is less than 20mg KOH/g, and the density is close to 0.9366(25/4 ℃).
And uniformly mixing the carbon black, the acrylic copolymer serving as a dispersing agent and a dimethylacetamide solvent by adopting the dispersing agent to obtain the color paste.
Example 3
The embodiment provides a nanoscale black color paste which is mainly prepared by the following steps:
weighing 20% of carbon black, 25% of dispersant acrylic copolymer and 55% of dimethylacetamide solvent according to weight percentage. The carbon black had an average particle diameter of 24nm, an oil absorption of 100cc/100gm, a volatility of 1% and a color strength of 110. The PDI distribution of the acrylic copolymer is narrow, the ammonia value is less than 20mg KOH/g, and the density is close to 0.9366(25/4 ℃).
And uniformly mixing the carbon black, the acrylic copolymer serving as a dispersing agent and a dimethylacetamide solvent by adopting the dispersing agent to obtain the color paste.
Example 4
The embodiment provides a nanoscale black color paste which is mainly prepared by the following steps:
weighing 20% of carbon black, 16% of dispersant acrylic copolymer and 64% of dimethylacetamide solvent according to weight percentage. The carbon black had an average particle diameter of 24nm, an oil absorption of 100cc/100gm, a volatility of 2.5% and a color strength of 125. The PDI distribution of the acrylic copolymer is narrow, the ammonia value is less than 20mg KOH/g, and the density is close to 0.9366(25/4 ℃).
And uniformly mixing the carbon black, the acrylic copolymer serving as a dispersing agent and a dimethylacetamide solvent by adopting the dispersing agent to obtain the color paste.
Example 5
The embodiment provides a nanoscale black color paste which is mainly prepared by the following steps:
weighing 20% of carbon black, 28% of dispersant acrylic copolymer and 52% of dimethylacetamide solvent according to weight percentage. The carbon black had an average particle diameter of 20nm, an oil absorption of 90cc/100gm, a volatility of 3% and a color strength of 135. The PDI distribution of the acrylic copolymer is narrow, the ammonia value is less than 20mg KOH/g, and the density is close to 0.9366(25/4 ℃).
And uniformly mixing the carbon black, the acrylic copolymer serving as a dispersing agent and a dimethylacetamide solvent by adopting the dispersing agent to obtain the color paste.
Comparative example 1
The comparative example provides a color paste, which is mainly prepared by the following steps:
weighing 20% of carbon black, 4% of dispersant acrylic copolymer and 76% of dimethylacetamide solvent according to weight percentage. The average particle diameter of the carbon black was 350 nm.
And uniformly mixing the carbon black, the acrylic copolymer serving as a dispersing agent and a dimethylacetamide solvent by adopting the dispersing agent to obtain the color paste.
Comparative example 2
The comparative example provides a color paste, which is mainly prepared by the following steps:
weighing 20% of carbon black, 3% of dispersant acrylic copolymer and 77% of dimethylacetamide solvent according to weight percentage. The average particle diameter of carbon black was 1 μm. The PDI distribution of the acrylic copolymer is narrow, the ammonia value is more than 20mg KOH/g, and the density is close to 0.8(25/4 ℃).
And uniformly mixing the carbon black, the acrylic copolymer serving as a dispersing agent and a dimethylacetamide solvent by adopting the dispersing agent to obtain the color paste.
Test example 1
Selecting the color paste prepared in the examples 1-5 and the comparative examples 1-2, and carrying out viscosity test on the color paste. The results are as follows:
table 1 viscosity results
The test results of the examples 1 to 5 are basically the same, and compared with the comparative example 1 and the comparative example 2, the color paste provided by the examples 1 to 5 has the advantages of low viscosity, good subsequent spinnability and no plate blockage.
Test example 2
Since the color pastes provided in examples 1 to 5 have substantially the same properties, the analysis is performed here by taking example 1 as an example. The pastes provided in comparative example 1, comparative example 2 and example 1 were tested on a synthetic fibre dyeing line and the results are shown in figure 1 as A, B and C.
As can be seen from FIG. 1, the fibers dyed by the color pastes of comparative example 1 and comparative example 2 have obvious color difference between the color development and the black color under the same sunlight source, and the fiber colors are brown and gray respectively. The fiber dyed by the color paste provided by the embodiment 1 has no obvious color difference with black under the same sunlight source, has uniform color, good covering power and good spinnability, does not block the board as shown in figure 2, and meets the hue requirement of the product.
In the subsequent cleaning process of the spinning equipment, the phenomenon that the stock solution dyed by the color paste provided in example 1 is difficult to agglomerate and clean is found. In the experimental spinnability process, after the crude rubber resin is added into the color paste provided by the comparative example 1 and the comparative example 2, the thickening phenomenon of the resin is obvious, but the apparent viscosity does not change too much, the subsequent spinnability is poor, and the blocking plate is serious, as shown in figure 3.
In conclusion, the carbon black is adopted as the raw material, and has the characteristics of low viscosity, high temperature resistance and good stability. The prepared color paste has the characteristics of heat resistance, light resistance, high temperature resistance, no color change, strong tinting strength, low viscosity and good covering power. The carbon black adopted by the invention is not subjected to organic surface modification, so that the cracking of organic matters is avoided, and the equipment is prevented from being corroded. Acrylic copolymer is selected as a dispersing agent, and dimethylacetamide is selected as a solvent, the dispersing agent can strongly disperse stable carbon black in the dimethylacetamide solvent, and the pigment color spreading is assisted, so that the color paste shows good gloss.
The embodiments described above are some, but not all embodiments of the invention. The detailed description of the embodiments of the present invention is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Claims (6)
1. The application of the nano black color paste in fiber dyeing is characterized in that the nano black color paste comprises the following components in percentage by weight: 15-25% of carbon black, 5-30% of a dispersant and 50-75% of a solvent, wherein the solvent is dimethylacetamide;
the dispersant is an acrylic copolymer, the amine value of the acrylic copolymer is less than 20mg KOH/g, and the density is 0.9366 g/cm3The carbon black is not organically surface-modified.
2. The application of the nano black color paste in fiber dyeing according to claim 1, wherein the carbon black accounts for 20 wt%, the dispersant accounts for 15-20 wt%, and the solvent accounts for 60-65 wt%.
3. The application of the nano black color paste in fiber dyeing according to claim 1, wherein the particle size of the carbon black is 8-30 nm, and the oil absorption of the carbon black is 70-100 cc/100 gm.
4. The application of the nano black color paste in fiber dyeing according to claim 3, wherein the particle size of the carbon black is 20-24 nm, and the oil absorption of the carbon black is 90-100 cc/100 gm.
5. The application of the nano-scale black color paste in fiber dyeing according to claim 3, wherein the volatility of the carbon black is 1-3%, and the tinting strength of the carbon black is 100-150%.
6. The application of the nano-scale black color paste in fiber dyeing according to claim 5, wherein the volatility of the carbon black is 2-3%, and the tinting strength of the carbon black is 100-130%.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE662759A (en) * | 1964-04-20 | 1965-10-20 | ||
| CN101984158A (en) * | 2010-10-29 | 2011-03-09 | 江苏双良氨纶有限公司 | Method for producing polyether black spandex fibers |
| CN102230236A (en) * | 2011-05-17 | 2011-11-02 | 上海瑞贝卡纤维材料科技有限公司 | Color paste for modified acrylic fiber wet raw liquor coloring system and preparation method thereof |
| CN103013230A (en) * | 2012-12-20 | 2013-04-03 | 广州市番禺科迪色彩有限公司 | Preparation method of solvent-based nano-carbon black paste |
-
2018
- 2018-03-16 CN CN201810217850.5A patent/CN108299951B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE662759A (en) * | 1964-04-20 | 1965-10-20 | ||
| CN101984158A (en) * | 2010-10-29 | 2011-03-09 | 江苏双良氨纶有限公司 | Method for producing polyether black spandex fibers |
| CN102230236A (en) * | 2011-05-17 | 2011-11-02 | 上海瑞贝卡纤维材料科技有限公司 | Color paste for modified acrylic fiber wet raw liquor coloring system and preparation method thereof |
| CN103013230A (en) * | 2012-12-20 | 2013-04-03 | 广州市番禺科迪色彩有限公司 | Preparation method of solvent-based nano-carbon black paste |
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