CN111574883A - Preparation method of photo-curing integrated white coating ink - Google Patents

Preparation method of photo-curing integrated white coating ink Download PDF

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CN111574883A
CN111574883A CN202010522728.6A CN202010522728A CN111574883A CN 111574883 A CN111574883 A CN 111574883A CN 202010522728 A CN202010522728 A CN 202010522728A CN 111574883 A CN111574883 A CN 111574883A
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photo
curing
integrated
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acrylate
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王成龙
闫凯
郑今欢
刘国金
柴丽琴
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Zhejiang University of Technology ZJUT
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Zhejiang University of Technology ZJUT
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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
    • C09D11/00—Inks
    • C09D11/02—Printing inks
    • C09D11/10—Printing inks based on artificial resins
    • C09D11/101—Inks specially adapted for printing processes involving curing by wave energy or particle radiation, e.g. with UV-curing following the printing
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/48—Polyethers
    • C08G18/4825—Polyethers containing two hydroxy groups
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/67—Unsaturated compounds having active hydrogen
    • C08G18/671—Unsaturated compounds having only one group containing active hydrogen
    • C08G18/672—Esters of acrylic or alkyl acrylic acid having only one group containing active hydrogen
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72—Polyisocyanates or polyisothiocyanates
    • C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
    • C08G18/75—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
    • C08G18/751—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring
    • C08G18/752—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group
    • C08G18/753—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group containing one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group having a primary carbon atom next to the isocyanate or isothiocyanate group
    • C08G18/755—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group containing one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group having a primary carbon atom next to the isocyanate or isothiocyanate group and at least one isocyanate or isothiocyanate group linked to a secondary carbon atom of the cycloaliphatic ring, e.g. isophorone diisocyanate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72—Polyisocyanates or polyisothiocyanates
    • C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
    • C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
    • C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
    • C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
    • C08G18/7671—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups containing only one alkylene bisphenyl group
    • 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
    • C09D11/00—Inks
    • C09D11/02—Printing inks
    • C09D11/03—Printing inks characterised by features other than the chemical nature of the binder
    • 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
    • C09D11/00—Inks
    • C09D11/02—Printing inks
    • C09D11/03—Printing inks characterised by features other than the chemical nature of the binder
    • C09D11/037—Printing inks characterised by features other than the chemical nature of the binder characterised by the pigment
    • 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
    • C09D11/00—Inks
    • C09D11/02—Printing inks
    • C09D11/10—Printing inks based on artificial resins
    • C09D11/102—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions other than those only involving unsaturated carbon-to-carbon bonds

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

Abstract

The invention discloses a preparation method of photo-curing integrated white coating ink, which comprises the following steps: (1) modified white pigment for standby; (2) reacting oligomer polyol with diisocyanate compound in nitrogen atmosphere to obtain polyurethane prepolymer; subsequently, ultrasonically dispersing the modified white pigment prepared in the step 1 by using a solvent, adding the dispersed modified white pigment into the polyurethane prepolymer for reaction, and finally adding an end-capping agent for end capping to obtain an integrated white coating; (3) and adding a photo-initiation system and an acrylate monomer in a certain proportion into the integrated white paint, and fully and uniformly stirring to obtain the integrated photo-curing paint ink. The invention utilizes the surface modification of the white pigment to ensure that the ink forms a pigment-cured film cross-linked structure in the curing process. Not only improves the photopolymerization performance of the ink, but also improves the color fastness of the coating ink.

Description

Preparation method of photo-curing integrated white coating ink
Technical Field
The invention belongs to the field of preparation of photocureable ink, and particularly relates to a preparation method of photocureable integrated white coating ink.
Background
The photo-curing digital printing technology utilizes photo-initiator, auxiliary agent, oligomer and the like to carry out cross-linking curing reaction, so that the coloring agent forms a curing film to be attached to the surface of the fabric. In view of the inherent properties of pigment printing, this technique suffers from the common drawback of pigment printing: the pigment particles are fixed on the fabric only by virtue of the physical coating effect of the macromolecular film-forming substance, and the pigment particles and the film-forming substance lack firm binding force, so that the friction resistance and the washing fastness of the photo-cured pigment digital ink-jet printing fabric can not reach the level of reactive dye printing.
Therefore, the surface of the pigment is modified to improve the dispersion stability of the pigment in an ink system and the color fastness of the digital ink-jet printing fabric. In order to solve the above problems, researchers have conducted a lot of research, chinese patent CN103834232A and chinese patent CN104194494A disclose a high-fastness inkjet printing pigment ink for textile and high-fastness inkjet printing pigment ink, respectively, which uses pigment/branched polymer nano-composite particle dispersion as colorant, and chinese patent CN106349750A discloses a reactive organic pigment composite particle for blue light curing digital printing and a preparation method thereof, wherein the color fastness is improved to a certain extent, but the pigment particle is substantially coated and fixed in a physical form, and a series of reactive organic pigment composite particles are prepared by coating gamma-methacryloxypropyltrimethoxysilane (KH570) on the surface of the organic pigment particle by a sol-gel method and coating the organic pigment particle by different degrees. The method improves the reactivity of the organic pigment and a polymerization system to a certain extent, but the surface coating layer and the organic pigment still exist in a physical coating form.
Disclosure of Invention
The invention aims to provide a preparation method of photo-curing integrated white coating ink, which utilizes the surface modification of white pigment to ensure that the ink forms a pigment-curing film cross-linked structure in the curing process. Not only improves the photopolymerization performance of the ink, but also improves the color fastness of the coating ink.
In order to solve the technical problems, the following technical scheme is adopted:
a preparation method of photo-curing integrated white coating ink is characterized by comprising the following steps:
step 1: adding the white pigment into an ethanol-water solution for ultrasonic dispersion, and simultaneously adding a silane coupling agent containing amino into the ethanol-water solution for hydrolysis for 30 min; adding the dispersed white pigment dispersion solution into a hydrolysis solution of a silane coupling agent containing amino for reaction, performing centrifugal dispersion on the obtained product, and drying to obtain a modified white pigment for later use;
step 2: reacting oligomer polyol with diisocyanate compound in nitrogen atmosphere to obtain polyurethane prepolymer; subsequently, ultrasonically dispersing the modified white pigment prepared in the step 1 by using a solvent, adding the dispersed modified white pigment into the polyurethane prepolymer for reaction, and finally adding an end-capping agent for end capping to obtain an integrated white coating;
and step 3: and adding a photo-initiation system and an acrylate monomer in a certain proportion into the integrated white paint, and fully and uniformly stirring to obtain the integrated photo-curing paint ink.
Preferably, the white pigment is one of titanium dioxide, silicon dioxide and calcium carbonate. The white pigment is an inorganic pigment, is in a thermodynamically unstable state due to high specific surface energy, is easy to agglomerate in a photocuring process, and is only simply physically coated with a cured film and lacks of firm valence bond combination. Therefore, the white inorganic pigment is modified to improve the agglomeration phenomenon and to generate a strong bonding force with the cured film.
Preferably, the silane coupling agent containing an amino group in step 1 is one of gamma-aminopropyltriethoxysilane, gamma-aminopropyltrimethoxysilane, gamma-aminopropyldimethoxysilane, gamma-aminopropyldiethoxysilane, N-beta (aminoethyl) -gamma-aminopropyltrimethoxysilane and N-beta (aminoethyl) -gamma-aminopropyltriethoxysilane in an amount of 10-80% based on the white pigment. The use level of the amino-containing silane coupling agent can directly influence the modification effect on the white pigment, the use level of the amino-containing silane coupling agent is small, and the white pigment is not completely modified; if the amount is too large, the self-condensation reaction of the amino-containing silane coupling agent can occur, which also affects the modification effect.
Preferably, the reaction temperature in the step 1 is 60-80 ℃, and the reaction time is 1 h; drying at 30-40 deg.c.
Preferably, in step 2, the oligomer polyol is one of polyethylene glycol, polypropylene glycol and polytetrahydrofuran glycol.
Preferably, the diisocyanate compound is one of isophorone diisocyanate, toluene diisocyanate, diphenylmethane diisocyanate and hexamethylene diisocyanate.
Preferably, the oligomer polyol and the diisocyanate compound are used in a molar ratio of: (1:1.9) - (1:2.2). The content of isocyanate groups in the oligomer is controlled by adjusting the ratio of the oligomer polyol to the diisocyanate compound, so that the combination condition of the modified white pigment and the oligomer is controlled, and the curing efficiency in the light curing process is controlled.
Preferably, the modified white pigment is used in an amount of 0.1% to 2% by weight of the polymerization system.
Preferably, the reaction temperature of the polyurethane prepolymer in the step 2 is 60-80 ℃, and the reaction time is 3-4 h. Because the reactivity of the isocyanate groups at the two ends of the diisocyanate compound is different, the reaction of the isocyanate group at one end is controlled while the reaction of the isocyanate group at the other end is not controlled, and the synthesis rate of the prepolymer and the viscosity of the system are adjusted.
Preferably, the reaction temperature of the integrated coating in the step 2 is 45-50 ℃, and the reaction time is 2-3 h.
Preferably, the end capping reagent in step 2 is one of hydroxyethyl acrylate, ethyl acrylate, methyl acrylate and butyl acrylate.
Preferably, in step 3, the photoinitiator is one or more of camphorquinone/tertiary amine initiator system, sulfurized anthrone derivative initiator system, dye/hydrogen donor initiator system, and organometallic initiator system.
Preferably, in the step 3, the acrylate monomer is one or more of hydroxyethyl acrylate, isobornyl acrylate, methyl methacrylate, methyl acrylate, ethyl acrylate, butyl acrylate and octyl acrylate, and the dosage and the mass ratio of the integrated white paint are (1:1) - (6: 4).
In addition, the invention also makes a further improvement:
more preferably, the aminosilane-containing coupling agent is subjected to hydrolysis reaction, and the volume ratio of the ethanol-aqueous solution is 8:2 (v/v). So that the amino-containing silane coupling agent can generate a group that bonds to the white pigment.
Further preferably, the pH of the amino silane-containing coupling agent-modified white pigment is 7, and the hydrolysis reaction of the amino silane-containing coupling agent is suppressed under acidic conditions, which is disadvantageous in the generation of reactive groups. Under alkaline conditions, modification of the white pigment by the amino-containing silane coupling agent is not facilitated.
More preferably, the amount of the photoinitiating system is 1% of the ink system.
Due to the adoption of the technical scheme, the method has the following beneficial effects:
based on photocuring, the invention provides photocuring integrated coating ink due to inherent defects of high specific surface energy of pigment, and the ink forms a pigment-cured film cross-linked structure in the curing process by modifying the surface of white pigment. Not only improves the photopolymerization performance of the ink, but also improves the color fastness of the coating ink.
Drawings
The invention will be further described with reference to the accompanying drawings in which:
FIG. 1 is a graph of polymerization rate in photocuring polymerization performance for examples 1-3;
FIG. 2 is a graph showing the heat release in photocuring polymerization performance of examples 1 to 3;
in fig. 1 and 2, 1 indicates example 1, 2 indicates example 2, and 3 indicates example 3, instead of distinguishing the curves of different colors.
Detailed Description
The technical solution of the present invention will be further specifically described below by way of specific examples. It is to be understood that the practice of the invention is not limited to the following examples, and that any variations and/or modifications may be made thereto without departing from the scope of the invention.
In the present invention, all parts and percentages are by weight, unless otherwise specified, and the equipment and materials used are commercially available or commonly used in the art. The methods in the following examples are conventional in the art unless otherwise specified.
Example 1
A preparation method of photo-curing integrated coating ink comprises the following steps:
(1) 1g of white titanium dioxide is added into 24ml of ethanol and 6ml of deionized water solution for ultrasonic dispersion for 30min, and 0.6g of 3-aminopropyltriethoxysilane is added into 80ml of ethanol and 20ml of deionized water solution for hydrolysis reaction for 30 min. Adding the divided white titanium dioxide after the hydrolysis reaction is finished, adjusting the pH to 7, adjusting the temperature to 70 ℃ for reaction for 1h, and centrifugally washing for three times (10000 revolutions per minute and 10 minutes per time) after the reaction is finished. And (5) drying for later use.
(2) Weighing 2.22g of isophorone diisocyanate, adding the isophorone diisocyanate into a three-neck flask filled with nitrogen, weighing 5g of polypropylene glycol, slowly dropping the polypropylene glycol into the three-neck flask, gradually heating to 80 ℃, dropping 1-2 drops of catalyst, reacting for 3 hours, cooling to 45 ℃, weighing 0.15g of modified titanium dioxide in the step 1, ultrasonically dispersing the modified titanium dioxide with 10ml of acetone, and adding the modified titanium dioxide into the polymerization system for reacting for 3 hours after the dispersion is completed. And (3) adding hydroxyethyl acrylate to seal the end for 0.5h after the reaction is finished, thus obtaining the integrated white coating.
(3) Weighing 2g of the white coating in the step 2, adding 0.002g of camphorquinone and 0.002g of ethyl dimethylaminobenzoate, stirring and ultrasonically treating for 15min to prepare the photo-curing integrated coating ink, and storing in dark.
Example 2
A preparation method of photo-curing integrated coating ink comprises the following steps:
(1) 1g of white silicon dioxide is added into 24ml of ethanol and 6ml of deionized water solution for ultrasonic dispersion for 30min, and 0.7g of 3-aminopropyltrimethoxysilane is added into 80ml of ethanol and 20ml of deionized water solution for hydrolysis reaction for 30 min. Adding the divided white silicon dioxide after the hydrolysis reaction is finished, adjusting the pH to 7, adjusting the temperature to 70 ℃ for reaction for 1h, and centrifugally washing for three times (10000 revolutions per minute and 10 minutes per time) after the reaction is finished. And (5) drying for later use.
(2) Weighing 2.22g of diphenylmethane diisocyanate, adding the diphenylmethane diisocyanate into a three-neck flask filled with nitrogen, weighing 4.5g of polypropylene glycol, slowly dripping the polypropylene glycol into the three-neck flask, gradually heating to 70 ℃, dripping 1-2 drops of catalyst, reacting for 4 hours, cooling to 50 ℃, weighing 0.2g of modified silicon dioxide in the step 1, ultrasonically dispersing by using 10ml of acetone, and adding the mixture into the polymerization system to react for 2 hours after the dispersion is finished. And (3) adding methyl acrylate to seal the end for 0.5h after the reaction is finished, thus obtaining the integrated white coating.
(3) And (3) weighing 1g of the white coating in the step (2), adding 0.002g of camphorquinone and 0.002g of ethyl dimethylaminobenzoate, stirring and ultrasonically treating for 15min to prepare the photo-curing integrated coating ink, and storing in a dark place.
Example 3
A preparation method of photo-curing integrated coating ink comprises the following steps:
(1) 1g of white calcium carbonate is added into 24ml of ethanol and 6ml of deionized water solution for ultrasonic dispersion for 30min, and 0.4g of 3-aminopropyltriethoxysilane is added into 80ml of ethanol and 20ml of deionized water solution for hydrolysis reaction for 30 min. Adding the divided white calcium carbonate after the hydrolysis reaction is finished, adjusting the pH to 7, adjusting the temperature to 70 ℃ for reaction for 1h, and centrifugally washing for three times (10000 revolutions per minute and 10 minutes per time) after the reaction is finished. And (5) drying for later use.
(2) Weighing 2.22g of isophorone diisocyanate, adding the isophorone diisocyanate into a three-neck flask filled with nitrogen, weighing 4.5g of polyethylene glycol, slowly dropping the polyethylene glycol into the three-neck flask, gradually heating to 80 ℃, dropping 1-2 drops of catalyst, reacting for 3 hours, cooling to 45 ℃, weighing 0.3g of modified calcium carbonate in the step 1, ultrasonically dispersing the modified calcium carbonate with 10ml of acetone, and adding the modified calcium carbonate into the polymerization system for reacting for 3 hours after the dispersion is finished. And (3) adding hydroxyethyl acrylate to seal the end for 0.5h after the reaction is finished, thus obtaining the integrated white coating.
(3) And 3g of the white coating obtained in the step 2 is weighed, 0.002g of anthrone sulfide derivative initiating system is added, stirring and ultrasonic treatment are carried out for 15min, and the photo-curing integrated coating ink is prepared and stored in a dark place.
The above is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions or modifications made on the basis of the present invention to solve the same technical problems and achieve the same technical effects are all covered in the protection scope of the present invention.

Claims (10)

1. A preparation method of photo-curing integrated white coating ink is characterized by comprising the following steps:
step 1: adding the white pigment into an ethanol-water solution for ultrasonic dispersion, and simultaneously adding a silane coupling agent containing amino into the ethanol-water solution for hydrolysis for 30 min; adding the dispersed white pigment dispersion solution into a hydrolysis solution of a silane coupling agent containing amino for reaction, performing centrifugal dispersion on the obtained product, and drying to obtain a modified white pigment for later use;
step 2: reacting oligomer polyol with diisocyanate compound in nitrogen atmosphere to obtain polyurethane prepolymer; subsequently, ultrasonically dispersing the modified white pigment prepared in the step 1 by using a solvent, adding the dispersed modified white pigment into the polyurethane prepolymer for reaction, and finally adding an end-capping agent for end capping to obtain an integrated white coating;
and step 3: and adding a photo-initiation system and an acrylate monomer in a certain proportion into the integrated white paint, and fully and uniformly stirring to obtain the integrated photo-curing paint ink.
2. The method for preparing the photo-curing integrated white paint ink according to claim 1, wherein the method comprises the following steps: the white pigment is one of titanium dioxide, silicon dioxide and calcium carbonate.
3. The method for preparing the photo-curing integrated white paint ink according to claim 1, wherein the method comprises the following steps: the silane coupling agent containing amino in the step 1 is one of gamma-aminopropyltriethoxysilane, gamma-aminopropyltrimethoxysilane, gamma-aminopropyldimethoxysilane, gamma-aminopropyldiethoxysilane, N-beta (aminoethyl) -gamma-aminopropyltrimethoxysilane and N-beta (aminoethyl) -gamma-aminopropyltriethoxysilane, the dosage of the silane coupling agent is 10-80% of the white pigment, and the percentage is weight percentage.
4. The method for preparing the photo-curing integrated white paint ink according to claim 1, wherein the method comprises the following steps: in the step 1, the reaction temperature is 60-80 ℃, and the reaction time is 1 h; drying at 30-40 deg.c.
5. The method for preparing the photo-curing integrated white paint ink according to claim 1, wherein the method comprises the following steps: in the step 2, the oligomer polyalcohol is one of polyethylene glycol, polypropylene glycol and polytetrahydrofuran glycol; the diisocyanate compound is one of isophorone diisocyanate, toluene diisocyanate, diphenylmethane diisocyanate and hexamethylene diisocyanate, and the molar ratio of the oligomer polyol to the diisocyanate compound is as follows: (1:1.9) - (1:2.2).
6. The method for preparing the photo-curing integrated white paint ink according to claim 1, wherein the method comprises the following steps: in the step 2, the reaction temperature of the polyurethane prepolymer is 60-80 ℃, and the reaction time is 3-4 h.
7. The method for preparing the photo-curing integrated white paint ink according to claim 1, wherein the method comprises the following steps: the reaction temperature of the integrated coating in the step 2 is 45-50 ℃, and the reaction time is 2-3 h.
8. The method for preparing the photo-curing integrated white paint ink according to claim 1, wherein the method comprises the following steps: the end-capping reagent in the step 2 is one of hydroxyethyl acrylate, ethyl acrylate, methyl acrylate and butyl acrylate.
9. The method for preparing the photo-curing integrated white paint ink according to claim 1, wherein the method comprises the following steps: in step 3, the photoinitiation system is one or more than one of a camphorquinone/tertiary amine initiation system, a sulfurized anthrone derivative initiation system, a dye/hydrogen donor initiation system and an organic metal initiation system.
10. The method for preparing the photo-curing integrated white paint ink according to claim 1, wherein the method comprises the following steps: in the step 3, the acrylate monomer is one or more of hydroxyethyl acrylate, isobornyl acrylate, methyl methacrylate, methyl acrylate, ethyl acrylate, butyl acrylate and octyl acrylate, and the using amount and the mass ratio of the integrated white coating are (1:1) - (6: 4).
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Cited By (3)

* Cited by examiner, † Cited by third party
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CN112480720A (en) * 2020-11-26 2021-03-12 上海颜钛实业有限公司 Preparation method of aluminum paste pigment and product prepared by preparation method
CN112829489A (en) * 2021-01-06 2021-05-25 常州雅得印刷有限公司 Printing process for UV flash three-dimensional pyrograph packaging box
WO2024007865A1 (en) * 2022-07-04 2024-01-11 徐建中 White dyne liquid

Citations (3)

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