CN114163875B - Red nanometer color paste and preparation method and application thereof - Google Patents

Red nanometer color paste and preparation method and application thereof Download PDF

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CN114163875B
CN114163875B CN202111305257.4A CN202111305257A CN114163875B CN 114163875 B CN114163875 B CN 114163875B CN 202111305257 A CN202111305257 A CN 202111305257A CN 114163875 B CN114163875 B CN 114163875B
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pigment
treatment
red
color paste
acid
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CN114163875A (en
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钟衍明
明亚强
郑冲详
林建鑫
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Shenzhen Moku New Materials Group Co.,Ltd.
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Shenzhen Inkbank Digital Consumable Co ltd
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D17/00Pigment pastes, e.g. for mixing in paints
    • C09D17/003Pigment pastes, e.g. for mixing in paints containing an organic pigment
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B67/00Influencing the physical, e.g. the dyeing or printing properties of dyestuffs without chemical reactions, e.g. by treating with solvents grinding or grinding assistants, coating of pigments or dyes; Process features in the making of dyestuff preparations; Dyestuff preparations of a special physical nature, e.g. tablets, films
    • C09B67/0001Post-treatment of organic pigments or dyes
    • C09B67/0017Influencing the physical properties by treatment with an acid, H2SO4
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B67/00Influencing the physical, e.g. the dyeing or printing properties of dyestuffs without chemical reactions, e.g. by treating with solvents grinding or grinding assistants, coating of pigments or dyes; Process features in the making of dyestuff preparations; Dyestuff preparations of a special physical nature, e.g. tablets, films
    • C09B67/0001Post-treatment of organic pigments or dyes
    • C09B67/0022Wet grinding of pigments
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D11/00Inks
    • C09D11/02Printing inks
    • C09D11/10Printing inks based on artificial resins
    • C09D11/101Inks specially adapted for printing processes involving curing by wave energy or particle radiation, e.g. with UV-curing following the printing
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D11/00Inks
    • C09D11/30Inkjet printing inks
    • C09D11/32Inkjet printing inks characterised by colouring agents
    • C09D11/322Pigment inks
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D11/00Inks
    • C09D11/30Inkjet printing inks
    • C09D11/32Inkjet printing inks characterised by colouring agents
    • C09D11/328Inkjet printing inks characterised by colouring agents characterised by dyes

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)

Abstract

The application relates to the technical field of UV (ultraviolet) nanometer color paste, in particular to a red nanometer color paste, a preparation method and application thereof, wherein in the preparation method, acid washing treatment is firstly carried out on a red pigment to obtain an acid treatment pigment, then salt milling treatment is carried out on the acid treatment pigment, sodium chloride and an organic solvent in a mixing manner to obtain a salt milling pigment, and then ball milling treatment is carried out on the salt milling pigment and other components of the color paste to obtain the red nanometer color paste; according to the preparation method, the pigment is subjected to acid washing and salt milling treatment, so that impurities on the surface of the pigment can be removed, the tinting strength of the red pigment can be improved through salt milling treatment, color paste with high tinting strength and high saturation can be obtained, and the obtained red nanometer color paste is not easy to precipitate and delaminate due to the adoption of a ball milling treatment process, so that the preparation method is favorable for wide application.

Description

Red nanometer color paste and preparation method and application thereof
Technical Field
The application belongs to the technical field of UV (ultraviolet) nanometer color paste, and particularly relates to a red nanometer color paste, a preparation method and application thereof.
Background
The UV photo-curing ink has the advantages of energy conservation, high efficiency, strong adaptability to a substrate, ultralow VOC emission and the like, and particularly the green and environment-friendly UV ink is rapidly developed along with the stricter national requirements on environmental protection. The color paste is prepared by mixing toner and solvent or diluent, adding dispersant and stabilizer to make it become liquid, stirring uniformly by a disperser, and then feeding into a nano grinder and shearing zirconium beads at high speed to reach the requirement of finished products.
In the field of UV (ultraviolet) ink-jet, PR122 and V19 are the most common two red pigments, and the bright red with excellent color is very rare, and some of the red pigments are only color-matched, so that the obtained red color paste is incorrect in chromaticity, and is easy to precipitate and delaminate, so that the obtained red color paste is low in saturation and unfavorable to use.
Disclosure of Invention
The purpose of the application is to provide a red nanometer color paste, a preparation method and application thereof, and aims to solve the problems of inaccurate chromaticity, low saturation and easy precipitation and layering of the red color paste in the prior art.
In order to achieve the purposes of the application, the technical scheme adopted by the application is as follows:
in a first aspect, the present application provides a method for preparing a red nano color paste, including the following steps:
acid leaching treatment is carried out on the red pigment, and then filtering, washing and drying are carried out, so that the acid-treated pigment is obtained;
salt milling is carried out on the acid-treated pigment, sodium chloride and an organic solvent to obtain a first mixture, the first mixture is mixed with water, heated and stirred, filtered, washed and dried to obtain a salt milled pigment;
carrying out second mixing treatment on the salt mill pigment, the acrylic ester monomer, the dispersing agent, the stabilizing agent and the synergistic dispersing agent to obtain a second mixture;
and ball milling and filtering the second mixture to obtain the red nanometer color paste.
In a second aspect, the present application provides a red nano-paste, which is prepared by a method for preparing a red nano-paste.
In a third aspect, the present application provides a UV red ink comprising a red nanosize paste.
The preparation method of the red nanometer color paste provided by the first aspect of the application comprises the steps of firstly carrying out acid washing treatment on a red pigment to obtain an acid treatment pigment, then mixing the acid treatment pigment with sodium chloride and an organic solvent to carry out salt milling treatment to obtain a salt milling pigment, and then mixing the salt milling pigment with other components of the color paste to carry out ball milling treatment to obtain the red nanometer color paste; according to the preparation method, the pigment is subjected to acid washing and salt milling treatment, so that impurities on the surface of the pigment can be removed, the tinting strength of the red pigment can be improved through salt milling treatment, color paste with high tinting strength and high saturation can be obtained, and the obtained red nanometer color paste is not easy to precipitate and delaminate due to the adoption of a ball milling treatment process, so that the preparation method is favorable for wide application.
According to the red nanometer color paste provided by the second aspect of the application, the red nanometer color paste is prepared by the preparation method of the red nanometer color paste, and the preparation method of the red nanometer color paste is adopted for preparing the color paste, so that the obtained color paste has the characteristics of high tinting strength, high saturation and difficult occurrence of precipitation and layering.
The third aspect of the application provides a UV red ink, this red ink is including the red nanometer mill base that provides, because red nanometer mill base tinting strength is strong, saturation is high, gives ink excellent smoothness and standby performance, does not have layering and stability is good.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved by the present application more clear, the present application is further described in detail below with reference to the embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
In this application, the term "and/or" describes an association relationship of an association object, which means that there may be three relationships, for example, a and/or B may mean: a alone, a and B together, and B alone. Wherein A, B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship.
In the present application, "at least one" means one or more, and "a plurality" means two or more. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, "at least one (individual) of a, b, or c," or "at least one (individual) of a, b, and c," may each represent: a, b, c, a-b (i.e., a and b), a-c, b-c, or a-b-c, wherein a, b, c may be single or multiple, respectively.
It should be understood that, in various embodiments of the present application, the sequence number of each process does not mean that the sequence of execution is sequential, and some or all of the steps may be executed in parallel or sequentially, where the execution sequence of each process should be determined by its functions and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.
The terminology used in the embodiments of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the examples and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
The weights of the relevant components mentioned in the embodiments of the present application may refer not only to specific contents of the components, but also to the proportional relationship between the weights of the components, and thus, any ratio of the contents of the relevant components according to the embodiments of the present application may be enlarged or reduced within the scope disclosed in the embodiments of the present application. Specifically, the mass in the specification of the embodiment of the present application may be a mass unit well known in the chemical industry field such as μ g, mg, g, kg.
The terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated for distinguishing between objects such as substances from each other. For example, a first XX may also be referred to as a second XX, and similarly, a second XX may also be referred to as a first XX, without departing from the scope of embodiments of the present application. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.
An embodiment of the present application provides a method for preparing a red nanometer color paste, including the following steps:
s01, carrying out acid leaching treatment on the red pigment, and then filtering, washing and drying to obtain an acid treated pigment;
s02, carrying out salt grinding treatment on the acid-treated pigment, sodium chloride and an organic solvent to obtain a first mixture, mixing the first mixture with water, heating, stirring, filtering, washing and drying to obtain a salt-ground pigment;
s03, carrying out second mixing treatment on the salt mill pigment, the acrylic ester monomer, the dispersing agent, the stabilizing agent and the synergistic dispersing agent to obtain a second mixture;
s04, performing ball milling treatment and filtering treatment on the second mixture to obtain the red nanometer color paste.
The preparation method of the red nanometer color paste provided by the first aspect of the application comprises the steps of firstly carrying out acid washing treatment on a red pigment to obtain an acid treatment pigment, then mixing the acid treatment pigment with sodium chloride and an organic solvent to carry out salt milling treatment to obtain a salt milling pigment, and then mixing the salt milling pigment with other components of the color paste to carry out ball milling treatment to obtain the red nanometer color paste; according to the preparation method, the pigment is subjected to acid washing and salt milling treatment, so that impurities on the surface of the pigment can be removed, the tinting strength of the red pigment can be improved through salt milling treatment, color paste with high tinting strength and high saturation can be obtained, and the obtained red nanometer color paste is not easy to precipitate and delaminate due to the adoption of a ball milling treatment process, so that the preparation method is favorable for wide application.
In step S01, the red pigment is subjected to acid leaching treatment, and then is subjected to filtration, washing and drying to obtain an acid-treated pigment. The red pigment is treated by acid liquor, so that impurities of the pigment can be removed.
In some embodiments, the step of acid leaching the red pigment comprises: stirring and mixing the red pigment and the acid liquor for 1-2 hours, and then adding water with the temperature of 5-6 ℃ for stirring for 1-2 hours. The red pigment and the acid liquor are stirred and mixed for 1-2 hours, so that the acid liquor is ensured to be completely soaked in the color, the impurity removal is facilitated, and if the soaking time is too short, the removal of impurities on the surface of the pigment is not facilitated, and the subsequent salt grinding treatment is influenced. Further, water with the temperature of 5-6 ℃ is added for washing, the temperature of the water is controlled to be lower, and the acid liquor reaction can not be initiated after the water is mixed with the acid liquor.
In some embodiments, the red pigment is selected from at least one of Basoff L3630, D3656HD, L3660HD, nicotiana ST, SR1C, craien D3G-CN, D3G-70-CN.
In some embodiments, the acid solution is selected from at least one of sulfuric acid, hydrochloric acid. In a specific embodiment, the acid solution is selected from a sulfuric acid solution with a mass percentage concentration of 96%.
In some embodiments, the mass ratio of red pigment to acid solution is 1:10-13. The mass ratio of the red pigment to the acid liquor is controlled, so that the acid liquor is ensured to remove impurities of the pigment, and if the addition amount of the acid liquor is too small, the soaking and washing treatment effect on the pigment is poor.
In some embodiments, the acid treated pigment is obtained by further filtration, washing and drying. Filtering the acid-leached red pigment mixed solution, washing with warm water until the washing solution becomes neutral, and drying at 70-75 ℃ to obtain the acid-treated pigment.
In step S02, the acid-treated pigment, sodium chloride and an organic solvent are subjected to salt milling treatment to obtain a first mixture, and the first mixture is mixed with water, heated and stirred, filtered, washed and dried to obtain the salt-milled pigment.
In some embodiments, the step of salt milling the acid treated pigment with sodium chloride, an organic solvent comprises: mixing the acid-treated pigment with sodium chloride and an organic solvent, and placing the mixture into a kneader for salt grinding treatment, wherein the temperature of the salt grinding treatment is 70-75 ℃, the rotating speed of the salt grinding treatment is 30-50 rpm, and the time of the salt grinding treatment is 12-13 hours.
Among them, the kneader is a machine that exhibits superior performance for kneading a high-viscosity substance and an ultra-high-viscosity substance. The highest kneading effect is achieved through the two rigid stirring paddles and the strong shearing force generated between the stirring paddles and the kneading groove, cooling, heating and vacuum decompression can be performed, and the kneading in a water drawing mode is realized through heating and vacuum decompression.
In some embodiments, the temperature of the salt mill treatment is controlled to be 70-75 ℃, the rotating speed of the salt mill treatment is 30-50 rpm, and the time of the salt mill treatment is 12-13 hours; the red pigment obtained by salt milling is ensured to have strong tinting strength, high saturation and positive chromaticity, is of normal redness, has strong dispersibility in the subsequent ink product preparation process, cannot be easily precipitated and layered, and is beneficial to subsequent use. If the temperature and the rotating speed of the salt mill treatment are too low or the treatment time is too short, the tinting strength of the red pigment is poor, the saturation is low, and the phenomena of precipitation and layering can occur when the salt mill is thrown away; if the temperature and the rotating speed of the salt mill treatment are too high or the treatment time is too long, the salt mill treatment of the red pigment is easy to be excessive, and the coloring is not facilitated.
In some embodiments, the mass ratio of acid treated pigment, sodium chloride, and organic solvent is 1:10 to 12:1.5 to 2. The addition proportion of the acid treatment pigment and sodium chloride is controlled to be moderate, which is favorable for moderately treating the acid treatment pigment, so that the acid treatment pigment has strong coloring strength and higher saturation.
Further, the first mixture is mixed with water, heated and stirred, and then filtered, washed and dried to obtain the salt mill pigment.
In some embodiments, in the step of mixing the first mixture with water and performing the heat-stirring treatment, the temperature of the heat-stirring treatment is 80 to 85 ℃, the rotation speed of the heat-stirring treatment is 700 to 900rpm, and the time of the heat-stirring treatment is 1 to 2 hours.
Further, in the step of filtering, washing and drying, the slurry was repeatedly filtered, washed with water to remove sodium chloride and a solvent, and then dried at 80℃for 24 hours to obtain a salt-milled pigment.
In step S03, the salt mill pigment, the acrylic ester monomer, the dispersing agent, the stabilizing agent and the synergistic dispersing agent are subjected to second mixing treatment to obtain a second mixture.
In some embodiments, the added parts of the salt mill pigment, acrylate monomer, dispersant, stabilizer, co-dispersant are selected from the following:
in some embodiments, the acrylate monomer is selected from at least one of dipropylene glycol diacrylate, isobornyl acrylate, 3, 5-trimethylcyclohexyl acrylate, neopentyl glycol propoxylate diacrylate, ethyl 2-ethyleneoxy-ethoxy acrylate.
In some embodiments, the dispersant is selected from at least one of Lu Borun Solsperse76400, lubo Solsperse78000, lubo Solsperse J200, ephrapanel Efka4350, ephrapanel Efka7701, ephrapanel Efka7731, ephrapanel Efka7732, picke chemistry BYK-LPN23134, DISPERBYK-2001.
In some embodiments, the stabilizer is selected from at least one of genrad 20 of RAHN, genrad 18 of RAHN, genrad 16 of RAHN.
In some embodiments, the synergistic dispersant is selected from at least one of Lu Borun Solsperse22000, shenzhen additive wetting Tilo-5002.
In some embodiments, the step of subjecting the salt grind pigment, acrylate monomer, dispersant, stabilizer, and co-dispersant to a second mixing process comprises: the acrylic ester monomer, the dispersing agent, the stabilizing agent and the synergistic dispersing agent are stirred for 0.5 to 1 hour at the rotating speed of 200 to 400rpm, and then the salt mill pigment is added for stirring for 2 to 2.5 hours at the rotating speed of 300 to 600 rpm. The mixing treatment can ensure that the components are uniformly dispersed.
In the step S04, ball milling treatment and filtering treatment are carried out on the second mixture, and the red nanometer color paste is obtained.
In some embodiments, in the step of ball milling the second mixture, mixing zirconium beads with the second mixture, and performing ball milling in a ceramic nano sand mill, wherein the filling amount of the zirconium beads is 70-90%, the types of the zirconium beads are 0.25-0.3mm and 0.1-0.15mm, the gaps of a sand mill separator are 0.15mm and 0.05mm, the air humidity is less than or equal to 65RH%, the temperature is less than or equal to 35 ℃, the inlet rotational speed is 600-900rpm, the inlet flow is 3-10kg/min, the grinding rotational speed is 650-750rpm, the grinding flow is 8-15kg/min, the cavity pressure is less than or equal to 0.14mpa, the grinding temperature is less than or equal to 45 ℃ and the grinding time is 6-12 hours.
In some implementations, the ball milling treatment may be selected from the group consisting of a coarse milling treatment and a fine milling treatment in sequence. Wherein, in the step of rough grinding treatment, zirconium beads with the model of 0.25-0.3mm are adopted, and the clearance of a sand mill separator is controlled to be 0.15mm for treatment. In the fine grinding treatment step, zirconium beads with the model number of 0.1-0.15mm are adopted, and the clearance of a sand mill separator is controlled to be 0.05mm for treatment.
In some embodiments, the filtering process is performed by selecting 1-1.5 μm filter element with model number of PP3-1006F10V, from Hangzhou Difan technology, with filtering flow rate of 1-2kg/min and filtering pressure of less than or equal to 0.2mpa.
The second aspect of the embodiment of the application provides a red nanometer color paste, which is prepared by a preparation method of the red nanometer color paste.
According to the red nanometer color paste provided by the second aspect of the application, the red nanometer color paste is prepared by the preparation method of the red nanometer color paste, and the preparation method of the red nanometer color paste is adopted for preparing the color paste, so that the obtained color paste has the characteristics of high tinting strength, high saturation and difficult occurrence of precipitation and layering.
In some embodiments, the average particle size of the red nano color paste is 100-120 nm, and the average particle size of the red nano color paste is controlled to be moderate, so that the stability in the mixing process is high, and precipitation and layering are not easy to occur.
A third aspect of the embodiments provides a UV red ink, which includes a red nano-paste.
The third aspect of the application provides a UV red ink, this red ink is including the red nanometer mill base that provides, because red nanometer mill base tinting strength is strong, saturation is high, gives ink excellent smoothness and standby performance, does not have layering and stability is good.
The following description is made with reference to specific embodiments.
Example 1
Red nanometer color paste and preparation method thereof
The components and the added parts of the red nanometer color paste provided in the example 1 are shown in the example 1 in the table 1.
The preparation method of the red nanometer color paste comprises the following steps:
stirring and mixing the red pigment and the acid liquor for 1-2 hours, adding water at 5-6 ℃ for stirring for 1-2 hours, and filtering, washing and drying to obtain the acid-treated pigment, wherein the mass ratio of the red pigment to the acid liquor is 1:10;
carrying out salt grinding treatment on the acid-treated pigment, sodium chloride and an organic solvent to obtain a first mixture; wherein, the salt grinding treatment is to mix acid treatment pigment with sodium chloride and organic solvent, and put into a kneader for salt grinding treatment, wherein, the temperature of the salt grinding treatment is 70-75 ℃, the rotating speed of the salt grinding treatment is 30-50 rpm, and the time of the salt grinding treatment is 12-13 hours; the mass ratio of the acid treatment pigment to the sodium chloride to the organic solvent is 1:10:1.5;
mixing the first mixture with water, heating, stirring, filtering, washing and drying to obtain a salt mill pigment; wherein the temperature of the heating and stirring treatment is 80-85 ℃, the rotating speed of the heating and stirring treatment is 700-900 rpm, and the time of the heating and stirring treatment is 1-2 hours;
stirring acrylate monomer, dispersant, stabilizer and synergistic dispersant at 200-400rpm for 0.5-1 hr, adding salt mill pigment and stirring at 300-600rpm for 2-2.5 hr to obtain the second mixture;
ball milling treatment and filtering treatment are carried out on the second mixture to obtain red nanometer color paste; wherein, the ball milling treatment is sequentially carried out with coarse milling treatment and fine milling treatment. Wherein, in the step of rough grinding treatment, zirconium beads with the model of 0.25-0.3mm are adopted, and the clearance of a sand mill separator is controlled to be 0.15mm for treatment. In the fine grinding treatment step, zirconium beads with the model of 0.1-0.15mm are adopted, and the clearance of a sand mill separator is controlled to be 0.05mm for treatment; the air humidity is less than or equal to 65RH%, the temperature is less than or equal to 35 ℃, the inlet rotational speed is 600-900rpm, the inlet flow is 3-10kg/min, the grinding rotational speed is 650-750rpm, the grinding flow is 8-15kg/min, the cavity pressure is less than or equal to 0.14mpa, the grinding temperature is less than or equal to 45 ℃, and the grinding time is 6-12 h;
in the step of filtering treatment, a 1-1.5 μm filter element with the model number of PP3-1006F10V of Hangzhou Difan technology limited is selected, the filtering flow is 1-2kg/min, and the filtering pressure is less than or equal to 0.2mpa.
The types and parts of the specific components of the red nanometer color paste of examples 2 to 4 are shown in table 1, and the preparation method is the same as that of example 1.
Comparative example 1
Red nanometer color paste and preparation method thereof
Wherein, each component and the added parts of the red nanometer color paste provided in the comparative example 1 are shown in the example 1 in the table 1.
The preparation method comprises the following steps: providing each component according to the red nano-paste provided in comparative example 1;
mixing the components to obtain a first mixture;
performing ball milling treatment on the first mixture for the first time to obtain UV nano black slurry; wherein, the ball milling treatment comprises the following steps: providing a sand mill, and performing ball milling treatment by adopting zirconium beads, wherein the filling amount of the zirconium beads is 60%, and the particle size of the zirconium beads is 0.8mm; the gap of the separator of the sand mill is 0.05mm; the rotational speed of the entering machine is 500rpm; the flow rate of the inlet machine is 2kg/min; the grinding rotation speed is 600rpm; the grinding flow is 5kg/min; the grinding temperature is 25 ℃; the grinding time was 15h.
The types and parts of specific components of the red nanometer color paste of comparative examples 2 to 3 are shown in table 1, and the preparation method is the same as that of comparative example 1.
TABLE 1
Property measurement and result analysis
(1) Stability test
The stability test adopts high-temperature aging at 60 ℃ for 14 days, the particle size and viscosity after aging are tested, and if the particle size change is less than 10% and the viscosity change is less than 5%, the color paste has better stability; the test results are shown in Table 2, the color pastes obtained in examples 1-4 have viscosity changes of less than 5% and little difference after aging for 14 days; the particle size change was less than 10%, and it was found that the color pastes obtained in examples 1 to 3 were excellent in stability. The color pastes obtained in comparative examples 1 to 3 are layered after aging for 14 days, and the color paste obtained in comparative example 1 and comparative example 2 has large change and poor stability, which is unfavorable for use.
TABLE 2
(2) Ink property test
The color pastes obtained in examples 1 to 4 and comparative examples 1 to 4 were subjected to ink formulation to prepare inks, and the on-press smoothness and standby performance thereof were measured, respectively.
Test method
(1) On-machine testing fluency: ricoh GEN 5 flat-bed machine-hansen card. The original driving of 100% ink quantity, 6 pass/high speed/bidirectional/slight feathering, printing test patterns (1000 multiplied by 10) for 10 square meters, and judging OK if the number of broken lines of each color is less than or equal to 3 (cleaning OK once), otherwise, disqualifying.
(2) Konica 1024i 6pl web machine-hansen card. The ink quantity of 100% is driven originally, 4 pass/high speed/bi-directional/feathering is achieved, the total printing test chart (1000 multiplied by 10) is 10 square meters, the number of broken lines of each color is less than or equal to 3 (cleaning OK once), OK is judged, otherwise, the ink is disqualified.
Standby performance: and printing the test strips after the fluency test is finished, printing the test strips again after a period of time, wherein the number of broken lines of the front test strip and the rear test strip is less than or equal to 3, and the length of the middle period of time is the standby performance.
Analysis of results
The color pastes obtained in examples 1 to 4 and comparative examples 1 to 3 were subjected to ink formulation to prepare inks, and the on-press fluency and standby performance of the inks were measured respectively, and the results are shown in Table 3, wherein the number of broken lattices after the ink of examples 1 to 4 was 0 to 1, and the number of broken lattices after the ink of comparative examples 1 to 3 was 4 to 5, which were unacceptable; the ink of examples 1 to 4 had a standby time of 45 minutes to 2 hours, and was long enough to be used for standing; the ink obtained in comparative examples 1 to 3 had a standby time of only 15 to 20 minutes, and was not advantageous for use.
TABLE 3 Table 3
In summary, the preparation method of the red nanometer color paste provided by the application comprises the steps of firstly carrying out acid washing treatment on a red pigment to obtain an acid treatment pigment, then mixing the acid treatment pigment with sodium chloride and an organic solvent to carry out salt milling treatment to obtain a salt milling pigment, and then mixing the salt milling pigment with other components of the color paste to carry out ball milling treatment to obtain the red nanometer color paste; according to the preparation method, the pigment is subjected to acid washing and salt milling treatment, so that impurities on the surface of the pigment can be removed, the tinting strength of the red pigment can be improved through salt milling treatment, color paste with high tinting strength and high saturation can be obtained, and the obtained red nanometer color paste is not easy to precipitate and delaminate due to the adoption of a ball milling treatment process, so that the preparation method is favorable for wide application.
The foregoing description of the preferred embodiments of the present application is not intended to be limiting, but is intended to cover any and all modifications, equivalents, and alternatives falling within the spirit and principles of the present application.

Claims (8)

1. The preparation method of the red nanometer color paste is characterized by comprising the following steps of:
acid leaching treatment is carried out on the red pigment, and then filtering, washing and drying are carried out until the washing liquid becomes neutral, thus obtaining the acid-treated pigment; wherein the red pigment is selected from at least one of Pasteur L3630, D3656HD and L3660HD, nicotiana ST and SR1C, and Craien D3G-CN and D3G-70-CN;
salt milling is carried out on the acid-treated pigment, sodium chloride and an organic solvent to obtain a first mixture, and after the first mixture is mixed with water and is subjected to heating and stirring treatment, filtering, washing and drying are carried out to obtain a salt-milled pigment; the temperature of the salt mill treatment is 70-75 ℃, the rotating speed of the salt mill treatment is 30-50 rpm, and the time of the salt mill treatment is 12-13 hours; the mass ratio of the acid treatment pigment to the sodium chloride to the organic solvent is 1:10-12:1.5-2;
carrying out second mixing treatment on the salt mill pigment, the acrylic ester monomer, the dispersing agent, the stabilizing agent and the synergistic dispersing agent to obtain a second mixture;
ball milling treatment and filtering treatment are carried out on the second mixture to obtain red nanometer color paste;
the step of acid leaching the red pigment comprises the following steps: stirring and mixing the red pigment and the acid liquor for 1-2 hours, and then adding water at 5-6 ℃ for stirring for 1-2 hours;
wherein, the salt mill pigment, the acrylic ester monomer, the dispersing agent, the stabilizing agent and the synergistic dispersing agent are added in parts by weight and are selected from the following:
10-25 parts of salt mill pigment;
50-90 parts of acrylate monomer;
3-20 parts of a dispersing agent;
0.1-1 part of stabilizer;
0.1-2 parts of synergistic dispersing agent;
the acrylic ester monomer is at least one selected from dipropylene glycol diacrylate, isobornyl acrylate, 3, 5-trimethyl cyclohexyl acrylate, neopentyl glycol propoxylate diacrylate and ethyl 2-ethyleneoxy ethoxy acrylate.
2. The method for preparing the red nanometer color paste according to claim 1, wherein,
the acid liquor is at least one of sulfuric acid and hydrochloric acid; and/or the number of the groups of groups,
the mass ratio of the red pigment to the acid liquor is 1:10-13.
3. The method for preparing red nano color paste according to claim 1, wherein the step of salt milling the acid-treated pigment with sodium chloride and an organic solvent comprises: mixing the acid-treated pigment with sodium chloride and an organic solvent, and putting the mixture into a kneader for salt milling treatment.
4. The method for preparing red nano color paste according to claim 1, wherein in the step of mixing the first mixture with water and performing heating and stirring treatment, the temperature of the heating and stirring treatment is 80-85 ℃, the rotating speed of the heating and stirring treatment is 700-900 rpm, and the time of the heating and stirring treatment is 1-2 hours.
5. The method for preparing the red nano color paste according to claim 1, wherein the dispersing agent is at least one selected from Lu Borun Solsperse76400, road-rinse Solsperse78000, road-rinse Solsperse j200, efka4350, efka7701, efka7731, efka7732, BYK-LPN23134, DISPERBYK-2001;
the stabilizer is at least one selected from GENORAD20 of RAHN, GENORAD18 of RAHN and GENORAD16 of RAHN;
the synergistic dispersing agent is at least one selected from Lu Borun Solsperse22000 and Shenzhen additive wetting Tilo-5002.
6. The method for preparing red nano color paste according to claim 1, wherein the step of performing the second mixing treatment on the salt mill pigment, the acrylate monomer, the dispersing agent, the stabilizer and the synergistic dispersing agent comprises the following steps: stirring the acrylate monomer, the dispersing agent, the stabilizing agent and the synergistic dispersing agent for 0.5-1 hour at the rotating speed of 200-400rpm, adding the salt mill pigment, and stirring for 2-2.5 hours at the rotating speed of 300-600 rpm; and/or the number of the groups of groups,
in the ball milling treatment step of the second mixture, zirconium beads and the second mixture are mixed in a ceramic nano sand mill for ball milling treatment, wherein the filling amount of the zirconium beads is 70-90%, the types of the zirconium beads are 0.25-0.3mm and 0.1-0.15mm, the gaps of a sand mill separator are 0.15mm and 0.05mm, the air humidity is less than or equal to 65RH%, the temperature is less than or equal to 35 ℃, the rotational speed of an entering machine is 600-900rpm, the flow rate of the entering machine is 3-10kg/min, the grinding rotational speed is 650-750rpm, the grinding flow rate is 8-15kg/min, the cavity pressure is less than or equal to 0.14mPa, the grinding temperature is less than or equal to 45 ℃, and the grinding time is 6-12 h; and/or the number of the groups of groups,
in the step of filtering treatment, a 1-1.5 μm filter element with the model of PP3-1006F10V of Hangzhou Di Van is selected, the filtering flow is 1-2kg/min, and the filtering pressure is less than or equal to 0.2mPa.
7. The red nanometer color paste is characterized by being prepared by the preparation method of the red nanometer color paste in any one of claims 1-6.
8. A UV red ink, wherein the UV red ink comprises the red nano-paste of claim 7.
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CN111057416A (en) * 2019-12-25 2020-04-24 珠海市东昌颜料有限公司 Color paste with low odor, low viscosity and good stability and application thereof
CN112300636A (en) * 2020-10-23 2021-02-02 深圳市墨库图文技术有限公司 UV nano red paste, preparation method thereof and UV ink
CN113429832A (en) * 2021-07-14 2021-09-24 深圳市墨库图文技术有限公司 PCB character ink-jet nano color paste and preparation method and application thereof

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Publication number Priority date Publication date Assignee Title
CN1781995A (en) * 2004-12-03 2006-06-07 东洋油墨制造株式会社 Colored composition
CN111057416A (en) * 2019-12-25 2020-04-24 珠海市东昌颜料有限公司 Color paste with low odor, low viscosity and good stability and application thereof
CN112300636A (en) * 2020-10-23 2021-02-02 深圳市墨库图文技术有限公司 UV nano red paste, preparation method thereof and UV ink
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