CN115975434B - Super black paste and preparation method and application thereof - Google Patents
Super black paste and preparation method and application thereof Download PDFInfo
- Publication number
- CN115975434B CN115975434B CN202211653642.2A CN202211653642A CN115975434B CN 115975434 B CN115975434 B CN 115975434B CN 202211653642 A CN202211653642 A CN 202211653642A CN 115975434 B CN115975434 B CN 115975434B
- Authority
- CN
- China
- Prior art keywords
- carbon black
- wetting
- black
- extra
- slurry
- Prior art date
- 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.)
- Active
Links
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 239000006229 carbon black Substances 0.000 claims abstract description 79
- 239000000049 pigment Substances 0.000 claims abstract description 43
- 239000004814 polyurethane Substances 0.000 claims abstract description 43
- 239000002649 leather substitute Substances 0.000 claims abstract description 38
- 150000001721 carbon Chemical class 0.000 claims abstract description 30
- 229920005749 polyurethane resin Polymers 0.000 claims abstract description 25
- 239000002736 nonionic surfactant Substances 0.000 claims abstract description 20
- 150000001412 amines Chemical class 0.000 claims abstract description 17
- 239000002245 particle Substances 0.000 claims abstract description 15
- 238000004040 coloring Methods 0.000 claims abstract description 14
- 239000003960 organic solvent Substances 0.000 claims abstract description 14
- 238000010521 absorption reaction Methods 0.000 claims abstract description 5
- 238000009736 wetting Methods 0.000 claims description 31
- 238000003756 stirring Methods 0.000 claims description 25
- 238000000227 grinding Methods 0.000 claims description 24
- 239000002002 slurry Substances 0.000 claims description 20
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical group CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 17
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 11
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 11
- 150000002191 fatty alcohols Chemical class 0.000 claims description 6
- 239000011164 primary particle Substances 0.000 claims description 4
- 125000000373 fatty alcohol group Chemical group 0.000 claims description 3
- 238000002715 modification method Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 230000000704 physical effect Effects 0.000 abstract description 3
- 229920002635 polyurethane Polymers 0.000 abstract description 2
- 238000003892 spreading Methods 0.000 abstract description 2
- 230000007480 spreading Effects 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 25
- 238000001035 drying Methods 0.000 description 15
- 239000000463 material Substances 0.000 description 15
- 238000012360 testing method Methods 0.000 description 10
- 238000002156 mixing Methods 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 7
- 238000000576 coating method Methods 0.000 description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 239000004744 fabric Substances 0.000 description 5
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 4
- 239000011324 bead Substances 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 238000007790 scraping Methods 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- 229910052726 zirconium Inorganic materials 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000005189 flocculation Methods 0.000 description 2
- 230000016615 flocculation Effects 0.000 description 2
- 239000010985 leather Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000010345 tape casting Methods 0.000 description 2
- 235000008738 Clausena lansium Nutrition 0.000 description 1
- 241000757020 Pontederia Species 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000003311 flocculating effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000010951 particle size reduction Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000013112 stability test Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
Landscapes
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
Abstract
The invention relates to the technical field of PU synthetic leather dry coloring, and provides a super black paste, a preparation method and application thereof. The extra black paste provided by the invention comprises the following components: 30-35 parts of modified carbon black; 25-30 parts of organic amine modified polyurethane resin; 35-45 parts of organic solvent; the modified carbon black is obtained by modifying high-pigment carbon black through a nonionic surfactant. The invention modifies the high-pigment carbon black, can improve the wettability of the high-pigment carbon black in an oily system, reduce the oil absorption value of the high-pigment carbon black and improve the carbon black content of the black paste; the invention adopts the organic amine modified polyurethane resin to improve the dispersibility and color spreading of the high pigment carbon black, and the high molecular weight polyurethane structure has better steric hindrance effect, so that the dispersed high pigment carbon black particles are not easy to aggregate, and the stability of the black paste is improved. The PU synthetic leather product prepared from the extra black paste provided by the invention has better blackness and physical properties.
Description
Technical Field
The invention relates to the technical field of PU synthetic leather dry coloring, in particular to a super black paste, a preparation method and application thereof.
Background
PU synthetic leather is a plastic product simulating the composition and structure of natural leather. Luggage, clothing, shoes, ornaments, sports goods and the like made of PU synthetic leather are well-established in the market. Black is the dominant color of PU synthetic leather, and in the field of black synthetic leather coloring, the traditional dry-method color patch coloring has a plurality of defects: the blanking personnel are more, and the labor cost is high; the pipeline cannot be conveyed in a closed way, and dust and VOC are generated; the dispersing and stirring time is very long, the efficiency is low, and the energy consumption is high; the long-time stirring dispersion slurry is higher in temperature, so that the physical properties of the product are reduced, the color is unstable, and the traditional dry-method color piece cannot meet the requirements of modern green production due to the problems.
At present, a coloring method of black paste for PU synthetic leather dry method appears in the market, and the black paste mainly comprises medium pigment carbon black, polyurethane resin, solvent DMF and dispersing agent. However, the blackness of the PU synthetic leather prepared by the method cannot reach the blackness of the traditional dry-process color piece coloring due to the adoption of the medium-pigment carbon black, but the high-pigment carbon black is difficult to disperse uniformly, and black paste cannot be obtained. The prior art does not have a proper black paste for dry coloring of PU synthetic leather.
Disclosure of Invention
Aiming at the problems, the invention aims to provide the extra black paste, the preparation method and the application thereof, and the extra black paste provided by the invention adopts high pigment carbon black, is uniformly dispersed, and the PU synthetic leather prepared from the extra black paste has high blackness, and can be compared favorably with the blackness of dry-process color piece coloring.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides extra black paste which comprises the following components in parts by weight:
30-35 parts of modified carbon black;
25-30 parts of organic amine modified polyurethane resin;
35-45 parts of organic solvent;
the modified carbon black is obtained by modifying high-pigment carbon black through a nonionic surfactant.
Preferably, the primary particle diameter of the high pigment carbon black is 10-20 nm, and the specific surface area is 520-600 m 2 Per gram, the oil absorption value is 90-110 mL/100g; the nonionic surfactant is fatty alcohol polyoxyethylene ether.
Preferably, the HLB value of the fatty alcohol-polyoxyethylene ether is 6-7.
Preferably, the organic solvent is N, N-dimethylformamide.
Preferably, the modification method is as follows: grinding and mixing the high pigment carbon black and the nonionic surfactant.
Preferably, the mass ratio of the nonionic surfactant to the high pigment carbon black is 3-6: 100.
the invention also provides a preparation method of the extra black paste, which comprises the following steps:
and mixing the modified carbon black, the organic amine modified polyurethane resin and the organic solvent to obtain the extra black paste.
Preferably, the mixing comprises sequentially wetting and grinding.
The invention also provides application of the extra black paste in dry coloring of PU synthetic leather.
The invention provides extra black paste which comprises the following components in parts by weight: 30-35 parts of modified carbon black; 25-30 parts of organic amine modified polyurethane resin; 35-45 parts of organic solvent; the modified carbon black is obtained by modifying high-pigment carbon black through a nonionic surfactant. The invention modifies the high-pigment carbon black by a nonionic surfactant, can improve the wettability of the high-pigment carbon black in an oily system, reduce the oil absorption value of the high-pigment carbon black and improve the carbon black content of the black paste; the invention adopts the organic amine modified polyurethane resin to improve the dispersibility and color spreading of the high pigment carbon black, and the high molecular weight polyurethane structure has better steric hindrance effect, so that the dispersed high pigment carbon black particles are not easy to aggregate, and the stability of the black paste is improved.
When the extra black paste provided by the invention is used for coloring a PU synthetic leather system, the extra black paste has better application matching property, and finally, the PU synthetic leather product has better blackness and physical properties.
The extra black paste provided by the invention is liquid, can realize sealed pipeline transportation and automatic material distribution, effectively reduces VOC and dust emission, and realizes clean production; compared with a solid color chip, the liquid black paste has higher dispersity of high-pigment carbon black, can reduce material stirring and dispersing time in the coloring process of PU synthetic leather, improves production efficiency, saves energy and reduces emission.
Detailed Description
The invention provides extra black paste which comprises the following components in parts by weight:
30-35 parts of modified carbon black;
25-30 parts of organic amine modified polyurethane resin;
35-45 parts of organic solvent;
the modified carbon black is obtained by modifying high-pigment carbon black through a nonionic surfactant.
In the present invention, each of the substances is commercially available as known to those skilled in the art unless otherwise specified.
The extra black paste comprises 30-35 parts by mass, preferably 30 parts by mass, of modified carbon black. In the present invention, the method of modification is preferably: grinding and mixing high-pigment carbon black and nonionic surfactant; in a specific embodiment of the present invention, the high pigment carbon black is preferably milled, and the nonionic surfactant is added dropwise to the high pigment carbon black while milling, and milling is continued; the primary particle diameter of the high pigment carbon black is preferably 10-20 nm, and the specific surface area is preferably 520-600 m 2 Preferably, the oil absorption value is 90-110 mL/100g; in a specific embodiment of the present invention, the Gao Sesu carbon black is preferably cabot carbon black MONARCH1400; the nonionic surfactant is preferably fatty alcohol polyoxyethylene ether, and the HLB value of the fatty alcohol polyoxyethylene ether is preferably 6-7; the fatty alcohol-polyoxyethylene ether is preferably AEO-3; the mass ratio of the nonionic surfactant to the high pigment carbon black is preferably 3-6: 100, more preferably 5:100; the grinding rotating speed is preferably 500-800 r/min; the grinding time is preferably 30-45 min, and the grinding time is counted from the completion of the dripping of the nonionic surfactant; the grinding equipment is preferably a ball mill; the grinding balls for the ball mill are preferably agate, and the diameter of the agate is preferably 2-3 cm; the dropping rate of the nonionic surfactant is preferably 10 to 15kg/min. The invention grinds the high pigment carbon black, and can lead the nonionic surfactant to be uniformly adsorbed on the surface of the high pigment carbon black.
Based on the mass parts of the modified carbon black, the extra black paste comprises 20-30 parts of organic amine modified polyurethane resin, preferably 20 or 30 parts; in a specific embodiment of the present invention, the organic amine-modified polyurethane resin is preferably available from Santa Clara Polymer materials Co., ltd., model SY-1419.
Based on the mass parts of the modified carbon black, the extra black paste comprises 35-50 parts of organic solvent, preferably 40 or 50 parts; the organic solvent is preferably N, N-dimethylformamide.
The invention also provides a preparation method of the extra black paste, which comprises the following steps:
and mixing the modified carbon black, the organic amine modified polyurethane resin and the organic solvent to obtain the extra black paste.
In the present invention, the mixing includes sequentially wetting and grinding; the wetting is preferably to carry out first wetting on the organic amine modified polyurethane resin and the organic solvent under the stirring condition to obtain first wetting slurry, carrying out second wetting on the first wetting slurry and the modified carbon black under the stirring condition to obtain second wetting slurry, and adding the second wetting slurry into a high-pressure homogenizer for third wetting to obtain third wetting slurry; the rotating speed of the first wetting is preferably 1000-1200 r/min, and the time is preferably 10-20 min; the rotating speed of the second wetting is preferably 2000-2500 r/min, and the time is preferably 30-35 min; the pressure of the third wetting is preferably 100-110 Mpa, and the time of the third wetting is preferably 30-40 min; after obtaining a third wet slurry, grinding the third wet slurry until the particle size D97 of the modified carbon black is below 5 mu m; the grinding equipment is preferably a bar-nitro sand mill; the grinding balls for the bar-type sand mill are preferably zirconium beads, and the diameter of the zirconium beads is preferably 4-6 mm; the number of grinding is preferably 2 to 3 times; the rotational speed of the grinding is preferably 1500-1600 r/min. The invention wets and disperses the modified carbon black, which is beneficial to the particle size reduction of the modified carbon black, the smaller the particle size of the carbon black dispersed in the color paste is, the closer to the original particle size, the larger the specific surface area is, and the higher the blackness of the color paste is.
The invention also provides an application of the extra black paste prepared by the technical scheme or the preparation method of the extra black paste in the field of PU synthetic leather dry coloring. The invention has no special requirement on the application mode, and the common mode of the technicians in the field is selected; in a specific embodiment of the invention, the method of application preferably comprises the steps of:
(1) Mixing polyurethane resin, a solvent and extra black paste to obtain a mixed material;
(2) Pouring the mixed material on the surface of release paper for doctor-blading, and then drying (marked as first drying) to obtain a PU synthetic leather coating;
(3) After the PU synthetic leather coating is coated by a knife, the coating is attached by base cloth, and the shaped PU synthetic leather is obtained after drying (marked as second drying);
(4) And stripping the base cloth and the release paper of the shaped PU synthetic leather to obtain the PU synthetic leather.
In the invention, the mass ratio of the polyurethane resin to the solvent to the extra black paste is preferably 100: 80-100: 5 to 7; the mixing is preferably carried out under stirring conditions; the stirring time is preferably 5min, and the stirring speed is preferably 1500r/min; the mixed materials are preferably poured uniformly from left to right; the blade coating tool is preferably a scraper bar; the thickness of the PU synthetic leather coating is preferably 15-20 mu m, more preferably 15 mu m; the time of the first drying is preferably 5-6 min, and the temperature of the first drying is preferably 130-140 ℃; the first drying apparatus is preferably an oven; the second drying time is preferably 5-6 min, and the second drying temperature is preferably 130-140 ℃; the second drying apparatus is preferably an oven. The invention aims to ensure firm adhesion of the PU coating and the base cloth by controlling the secondary knife coating.
In order to further illustrate the present invention, the following examples are provided to describe in detail a specific black paste, its preparation method and application, but they should not be construed as limiting the scope of the invention.
The modified carbon black used in the embodiment of the invention is obtained by modifying high pigment carbon black through fatty alcohol polyoxyethylene ether AEO-3; the high pigment carbon black is cabot carbon black MONARCH1400, the primary particle diameter is 13nm, and the specific surface area is 560m 2 Suction/gThe oil value is 90mL/100g; the HLB value of the fatty alcohol polyoxyethylene ether AEO-3 is 6-7; the modification method comprises the following steps: grinding the high-pigment carbon black in a ball mill with the rotating speed of 500r/min, then grinding the high-pigment carbon black while grinding the high-pigment carbon black, dropwise adding fatty alcohol polyoxyethylene ether AEO-3 into the high-pigment carbon black, and continuously grinding for 30min; the mass ratio of the fatty alcohol polyoxyethylene ether AEO-3 to the high pigment carbon black is 5:100; the dropping speed is 10kg/min; the grinding equipment is a ball mill of agate stone with the diameter of 2-3 cm.
The organic amine modified polyurethane resin used in the embodiment of the invention is from Sanyue high molecular materials Co., ltd, and the model is SY-1419.
Example 1
According to the parts by weight, sequentially adding 30 parts of organic amine modified polyurethane resin and 40 parts of DMF (dimethyl formamide) into a stirrer, stirring for 10min at the rotating speed of 1000r/min, adding 30 parts of modified carbon black into a stirring kettle at the rotating speed of 2000r/min, and stirring for 30min to obtain a mixed material;
adding the mixed materials into a high-pressure homogenizer for dispersion for 30min, wherein the pressure is 100Mpa, and finally, grinding the mixed materials by a bar-type sand mill with zirconium beads of 4-6 mm for 2 times at the rotating speed of 1500r/min to obtain the extra black paste.
Example 2
According to the parts by weight, sequentially adding 20 parts of organic amine modified polyurethane resin and 50 parts of DMF (dimethyl formamide) into a stirrer, stirring for 10min at the rotating speed of 1000r/min, adding 30 parts of modified carbon black into a stirring kettle at the rotating speed of 2000r/min, and stirring for 30min to obtain a mixed material;
adding the mixed materials into a high-pressure homogenizer for dispersion for 30min, wherein the pressure is 100Mpa, and finally, grinding the mixed materials by a bar-type sand mill with zirconium beads of 4-6 mm for 2 times at the rotating speed of 1500r/min to obtain the extra black paste.
Comparative example 1
The black paste was prepared by the method of example 1, except that the conditions were the same as in example 1, except that: the organic amine modified polyurethane resin is changed into polyurethane resin.
Comparative example 2
The black paste was prepared by the method of example 1, except that the conditions were the same as in example 1, except that: modified carbon black is changed to cabot carbon black MONARCH1400.
Application example 1
(1) 100 parts of polyurethane resin and 80 parts of solvent DMF (dimethyl formamide), and 5 parts of extra black paste in the embodiment 1 are put into a stirrer to be stirred for 5min at a stirring speed of 1500r/min, so as to obtain a mixed material;
(2) Uniformly pouring the mixed material on the uppermost surface of release paper from left to right, scraping the mixed material from top to bottom by using a 15 mu m scraping rod, and then drying the mixed material in a 130 ℃ oven for 5 minutes to obtain primary PU synthetic leather;
(3) Scraping and coating the primary PU synthetic leather from top to bottom by using a 15 mu m scraping rod, attaching by using base cloth, and drying in a baking oven at 130 ℃ for 5 minutes to obtain the shaped PU synthetic leather;
(4) And stripping the base cloth and the release paper of the shaped PU synthetic leather to obtain the PU synthetic leather.
Application example 2
The PU synthetic leather was obtained by referring to the method of application example 1, except that the conditions were the same as in application example 1, except that: the extra black paste in example 1 was changed to the extra black paste in example 2.
Comparative example 1 was used
The PU synthetic leather was obtained by referring to the method of application example 1, except that the conditions were the same as in application example 1, except that: the extra black paste in example 1 was changed to the black paste in comparative example 1.
Comparative example 2 was used
The PU synthetic leather was obtained by referring to the method of application example 1, except that the conditions were the same as in application example 1, except that: the extra black paste in example 1 was changed to the black paste in comparative example 2.
Comparative example 3 was used
The PU synthetic leather was obtained by referring to the method of application example 1, except that the conditions were the same as in application example 1, except that: the extra black paste in example 1 was changed to a patch, and the model was confluent-color mirror black 1800.
Comparative example 4 was used
The PU synthetic leather was obtained by referring to the method of application example 1, except that the conditions were the same as in application example 1, except that: the extra black paste in example 1 was changed to a patch, and the model was wampee black 200X.
Comparative example 5 was used
The PU synthetic leather was obtained by referring to the method of application example 1, except that the conditions were the same as in application example 1, except that: the extra black paste in example 1 was changed to commercial paste, and the model was Jiaxing Sanbao SBU 9580A extra black.
Performance test of PU synthetic leather
1. Particle size test
The particle size of the modified carbon black or the carbon black in the color paste is tested by a laser particle size distribution instrument, and the test results of examples 1-2 and comparative examples 1-2 are specifically shown in Table 1:
TABLE 1 particle size of pigments in color pastes obtained in examples 1 to 2 and comparative examples 1 to 2
| Name of product | Example 1 | Example 2 | Comparative example 1 | Comparative example 2 |
| Particle diameter D97 (mum) | 1.2 | 3.5 | 7.8 | 5.5 |
| Volume average diameter (nm) | 200 | 500 | 1000 | 800 |
As can be seen from Table 1, the modified carbon black in the extra-black paste provided by the invention has small particle size and is not easy to agglomerate.
2. Storage stability test
The color paste was stored at 60 ℃ for 1 week, the state change was observed, and the particle size of the pigment was tested, and the test results are specifically shown in table 2:
TABLE 2 storage stability results of color pastes obtained in examples 1 to 2 and comparative examples 1 to 2
| Name of product | Example 1 | Example 2 | Comparative example 1 | Comparative example 2 |
| Particle diameter D97 (mum) | Below 5 | Below 8 | 32 or less | 30 or less |
| Status of | Normal state | Slightly flocculating | Flocculation | Flocculation |
As can be seen from Table 2, the storage stability of the modified carbon black in the extra black paste provided by the invention is obviously better than that of comparative examples 1-2.
3. Blackness test
The PU synthetic leathers obtained in application examples 1 to 2 and application comparative examples 1 to 5 were placed in a spectrocolorimeter to test the L value of the leather sample, wherein the smaller the L value is, the higher the blackness is, and the test results are specifically shown in Table 3:
TABLE 3 blackness of PU synthetic leathers obtained by application examples 1 to 2 and application comparative examples 1 to 5
As shown in Table 3, the PU synthetic leather prepared from the extra black paste provided by the invention has high blackness, and can be compared favorably with the blackness of dry-process color piece coloring.
4. Hand feel test
The softness of the PU synthetic leather obtained in application examples 1 to 2 and application comparative examples 1 to 5 was evaluated, and the softness was classified into 5 grades, the higher the grade, the better the softness, and the test results are specifically shown in Table 4:
TABLE 4 flexibility of PU synthetic leathers obtained in application examples 1 to 2 and comparative examples 1 to 5
As can be seen from Table 4, the PU synthetic leather prepared from the extra black paste provided by the invention has good softness, and is obviously better than the effect of using a color chip and black paste on the market.
5. Stirring time test
With 10g of the color chip of comparative example 3, 10g of the color chip of comparative example 4 and 10g of the extra black paste obtained in example 1, respectively, 200g of polyurethane resin and 160g of DMF were mixed in a 500ml beaker and stirred to a particle-free homogeneous state at a stirring speed of 1200r/Min, the test results for the required stirring time being specified in Table 5:
TABLE 5 stirring time of commercially available color chips with the extra black paste of example 1
| Name of product | Color chip of comparative example 3 | Color chip of comparative example 4 | Extra black paste obtained in example 1 |
| Stirring time | 15min | 15min | 3min |
As shown in Table 5, the extra black paste provided by the invention has good compatibility with polyurethane resin system, and can shorten the stirring time by about 75% compared with the color chips.
The foregoing is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. It should be noted that modifications and adaptations to the present invention may occur to one skilled in the art without departing from the principles of the present invention and are intended to be comprehended within the scope of the present invention.
Claims (6)
1. The extra black paste is characterized by comprising the following components in parts by weight:
30-35 parts of modified carbon black;
25-30 parts of organic amine modified polyurethane resin;
35-45 parts of an organic solvent;
the modified carbon black is obtained by modifying high-pigment carbon black through a nonionic surfactant;
the primary particle diameter of the high pigment carbon black is 10-20 nm, and the specific surface area is 520-600 m 2 Per gram, the oil absorption value is 90-110 mL/100g; the mass ratio of the nonionic surfactant to the high-pigment carbon black is 3-6:100;
the modification method comprises the following steps: grinding the high-pigment carbon black, dropwise adding a nonionic surfactant into the high-pigment carbon black while grinding, and continuously grinding; the dropping speed of the nonionic surfactant is 10-15 kg/min;
the preparation method of the extra black paste comprises the following steps:
carrying out first wetting on the organic amine modified polyurethane resin and an organic solvent under a stirring condition to obtain first wetting slurry, carrying out second wetting on the first wetting slurry and modified carbon black under the stirring condition to obtain second wetting slurry, and adding the second wetting slurry into a high-pressure homogenizer for third wetting to obtain third wetting slurry; the third wet slurry was ground until the modified carbon black had a particle diameter D97 of 5 μm or less.
2. The extra black paste according to claim 1, wherein the nonionic surfactant is a fatty alcohol polyoxyethylene ether.
3. The extra black paste according to claim 2, wherein the fatty alcohol polyoxyethylene ether has an HLB value of 6 to 7.
4. The extra black paste according to claim 1, wherein the organic solvent is N, N-dimethylformamide.
5. The method for preparing the extra black paste according to any one of claims 1 to 4, which is characterized by comprising the following steps:
carrying out first wetting on the organic amine modified polyurethane resin and an organic solvent under a stirring condition to obtain first wetting slurry, carrying out second wetting on the first wetting slurry and modified carbon black under the stirring condition to obtain second wetting slurry, and adding the second wetting slurry into a high-pressure homogenizer for third wetting to obtain third wetting slurry; the third wet slurry was ground until the modified carbon black had a particle diameter D97 of 5 μm or less.
6. The application of the extra black paste prepared by any one of claims 1-4 or the preparation method of claim 5 in dry coloring of PU synthetic leather.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211653642.2A CN115975434B (en) | 2022-12-22 | 2022-12-22 | Super black paste and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211653642.2A CN115975434B (en) | 2022-12-22 | 2022-12-22 | Super black paste and preparation method and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115975434A CN115975434A (en) | 2023-04-18 |
| CN115975434B true CN115975434B (en) | 2023-12-19 |
Family
ID=85969438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211653642.2A Active CN115975434B (en) | 2022-12-22 | 2022-12-22 | Super black paste and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115975434B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107189534A (en) * | 2017-06-21 | 2017-09-22 | 杭州中富彩新材料科技有限公司 | A kind of large arch dam shading, antiultraviolet polyurethane loomage coating colouring agent and preparation method thereof |
| CN111574889A (en) * | 2020-06-08 | 2020-08-25 | 清远市实创涂料科技有限公司 | High-performance nano black color paste and preparation method and application thereof |
-
2022
- 2022-12-22 CN CN202211653642.2A patent/CN115975434B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107189534A (en) * | 2017-06-21 | 2017-09-22 | 杭州中富彩新材料科技有限公司 | A kind of large arch dam shading, antiultraviolet polyurethane loomage coating colouring agent and preparation method thereof |
| CN111574889A (en) * | 2020-06-08 | 2020-08-25 | 清远市实创涂料科技有限公司 | High-performance nano black color paste and preparation method and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115975434A (en) | 2023-04-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107286732B (en) | Water-based plastic inner printing composite gravure printing ink and preparation method thereof | |
| CN103342922B (en) | All vegetable oil high-speed planographic printing ink | |
| CN102796420B (en) | Water-based ink color painting pigment with shading effect used on rice paper | |
| CN107474683A (en) | A kind of preparation method of anticorrosive paint | |
| CN112694793B (en) | Aqueous pigment dispersion and method for preparing high-stability superfine pigment color paste by using same | |
| CN105400297B (en) | A kind of mill base and preparation method thereof | |
| CN108641481A (en) | Environment-friendly water-based digital jet ink used for decorative paper and its preparation method and application | |
| CN106675092A (en) | Environment-friendly type composite disperse dye and preparation method and application thereof | |
| CN115975434B (en) | Super black paste and preparation method and application thereof | |
| CN109535824B (en) | Vegetable dye printing ink and preparation method thereof | |
| CN105440785A (en) | Gravure water-based ink for ivory board and printing method | |
| CN103468058A (en) | Weak-solvent ink-jet ink for industrial piezoelectric jetting head and preparation method thereof | |
| CN102969076A (en) | High-performance superconductivity carbon paste and preparation method thereof | |
| CN106700652A (en) | Environmental-friendly combined disperse dye as well as preparation method and application thereof | |
| CN106634305A (en) | Fluorescent automobile specific paint and preparation method thereof | |
| CN110607090A (en) | High-molecular dispersing agent for water-based paint and preparation method thereof | |
| CN105802337A (en) | Ink based on synthetic macromolecule polymer and preparing method thereof | |
| CN108727900A (en) | A kind of storage stability and the good disperse dye ink and preparation method of redispersibility | |
| CN1356360A (en) | Pigment disperser composition | |
| CN104530811A (en) | Aluminum profile red powder coating even reinforcing agent and preparation method thereof | |
| CN114958083A (en) | Printing process of environment-friendly printing ink and printing ink | |
| CN112159606A (en) | Water-based nano universal color paste and preparation method thereof | |
| CN115821596A (en) | Anti-flooding white slurry and preparation method and application thereof | |
| CN115505299B (en) | Wear-resistant silver paint for ceramic substrate and preparation method thereof | |
| CN112442293A (en) | Moisture regain resistant painting pigment and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |