CN113637356B - Ink-jet printing ink for aluminum plate and preparation method thereof - Google Patents
Ink-jet printing ink for aluminum plate and preparation method thereof Download PDFInfo
- Publication number
- CN113637356B CN113637356B CN202110903750.XA CN202110903750A CN113637356B CN 113637356 B CN113637356 B CN 113637356B CN 202110903750 A CN202110903750 A CN 202110903750A CN 113637356 B CN113637356 B CN 113637356B
- Authority
- CN
- China
- Prior art keywords
- ink
- jet printing
- inorganic pigment
- parts
- resin
- 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
Classifications
-
- 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
- C09D11/30—Inkjet printing inks
-
- 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
- C09D11/30—Inkjet printing inks
- C09D11/32—Inkjet printing inks characterised by colouring agents
-
- 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
- C09D11/30—Inkjet printing inks
- C09D11/36—Inkjet printing inks based on non-aqueous solvents
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
- Ink Jet Recording Methods And Recording Media Thereof (AREA)
Abstract
The invention belongs to the technical field of ink, and discloses ink-jet printing ink for an aluminum plate and a preparation method thereof, wherein the ink-jet printing ink comprises matrix resin, an alcohol ether solvent and an inorganic pigment; the viscosity of the matrix resin is 100-200cp at normal temperature; a method of preparing an ink-jet printing ink comprising the steps of: the inorganic pigment is mixed with a matrix resin and a solvent, and then is ground to obtain the pigment. The low-viscosity resin is selected as the matrix resin of the ink-jet printing ink, and the low-carbon alcohol ether solvent with lipophilicity and hydrophilicity is adopted, so that the alcohol ether solvent can reduce the surface tension of a system and improve the wettability and permeability of the ink, thereby improving the adhesive force of the ink and the matrix material; meanwhile, the inorganic pigment is used as a coloring agent of the ink, the good weather resistance of the inorganic pigment is fully utilized, and the prepared ink has good weather resistance and good adhesive force when being printed on an aluminum plate in an ink-jet manner, is clear in printed patterns and normal in color development, and can be suitable for outdoor decoration.
Description
Technical Field
The invention belongs to the technical field of ink, and particularly relates to ink-jet printing ink for an aluminum plate and a preparation method thereof.
Background
At present, two methods of aluminum plate decoration mainly comprise roller coating and UV ink-jet printing, wherein: roller painting decoration of different pattern models requires a roller for carving corresponding patterns, color contraposition is difficult, only 2-3 colors of printing ink can be used for simple decoration, the printing needs to be in direct contact with an aluminum plate, and a base material with a concave-convex surface cannot be decorated, so that the decoration range is limited; the UV ink-jet printing has high precision, ink can be jetted according to needs, the ink utilization rate is high, and basically no ink waste exists. The color development is bright without carving a roller, the individualized design pattern is obtained when the pattern is seen, the design period is shortened, but the color development of the UV ink mainly depends on active dye, the UV ink is not high-temperature resistant, the UV ink is easy to fade under outdoor long-term ultraviolet irradiation, the weather resistance is poor, the fatal defect of the UV ink is also caused, and meanwhile, the UV ink-jet printing needs to use an ultraviolet lamp for irradiation and solidification in the printing process, so the process is complex and the energy consumption is high.
The ceramic ink adopting the inorganic pigment has high boiling point of about 280-400 ℃; the surface tension is small, about 25 dynes; and generally does not contain resin components, if the ink is directly used for printing on an aluminum plate, patterns are easy to scatter and unclear, and after the ink is dried, the patterns do not have adhesive force and are easy to fall off, so that the ceramic ink-jet printing ink cannot be applied to the aluminum plate.
Aiming at the problems that the roller coating decoration method has good weather resistance, but the decoration patterns are not abundant and irregular base materials such as concave-convex surfaces and the like cannot be decorated; the UV ink-jet decorative patterns are rich, irregular base materials such as concave-convex surfaces and the like can be decorated, but the weather resistance is poor; the ceramic ink is applied to the current situation that an aluminum plate is easy to fall off and patterns are not clear.
Therefore, it is urgently needed to develop an ink-jet printing ink which has good weather resistance, strong adhesion and clear pattern and is suitable for aluminum plates.
Disclosure of Invention
The invention provides an ink-jet printing ink for an aluminum plate and a preparation method thereof, which aim to solve one or more technical problems in the prior art and at least provide a beneficial choice or creation condition.
To overcome the above technical problems, a first aspect of the present invention provides an ink for ink jet printing.
Specifically, the ink-jet printing ink comprises a matrix resin, an alcohol ether solvent and an inorganic pigment; the viscosity of the matrix resin is 100-200cp at normal temperature.
The invention selects a resin with relatively low viscosity at normal temperature as matrix resin, the viscosity of the resin is in positive correlation with the molecular weight of the resin, and the resin with relatively low molecular weight has low viscosity, good fluidity and relatively low drying rate, and is not easy to block a spray head during ink-jet printing; the alcohol ether solvent is an oxygen-containing solvent, mainly is low-carbon alcohol ether of ethylene glycol and propylene glycol, and has not only ether bond but also hydroxyl group, the former has lipophilicity and can dissolve hydrophobic compound, the latter has hydrophilicity and can dissolve water-soluble compound, so that it has good compatibility with matrix resin with small molecular weight, and under the combined action of the two, it can retain good levelling property of ink, and the alcohol ether solvent can also reduce surface tension of system, and can improve wettability and permeability of resin matrix so as to raise adhesive force of ink and matrix material to be printed. In addition, the alcohol ether solvent has better setting performance, and can ensure the definition of the pattern after ink-jet printing.
The invention adopts inorganic pigment as the colorant of the ink, and the inorganic pigment has good weather resistance because of the characteristics of inorganic material, and can be well adhered to the matrix material under the action of matrix resin and alcohol ether solvent.
As a further improvement of the above aspect, the inorganic pigment has an electrical conductivity of <0.15ms/cm, a water content of <0.3%, a particle size distribution of D50=0.1-0.15 μm, D90=0.2-0.3 μm, D100<1 μm.
Specifically, when the inorganic pigment is applied to ink-jet printing ink, on one hand, the inorganic pigment is required to adapt to the requirements of ink-jet printing, particularly the material and the size of a nozzle; on the other hand, good compatibility with the resin matrix solution is required. The invention controls the conductivity of the inorganic pigment to be less than 0.15ms/cm, the water content to be less than 0.3 percent and the particle size distribution to be in a narrower range, the average particle size D50=0.1-0.15 mu m, D90=0.2-0.3 mu m, D100 is less than 1 mu m, the particle size distribution is narrow, so as to improve the ink-jet printing quality of the inorganic pigment and the adhesive force of the inorganic pigment ink and the matrix material. Specifically, the conductivity reflects the salt content in the ink, and excessively high salt content is easy to form crystals at a spray head of an ink-jet printer, which affects the stability of the performance of the ink, and easily blocks the spray head, which affects the smoothness of the ink during printing; the water content reflects the water content of the inorganic pigment, and the water content is too high, so that inorganic pigment powder is not easy to disperse, and the stability of the ink performance is also influenced; the particle size distribution directly influences the color development effect of the inorganic pigment, so that the smoothness of ink-jet printing is adapted, a spray head is not blocked, the particle size of the inorganic pigment needs to be ensured in a smaller particle size distribution range, the inorganic pigment with the excessively small particle size is easy to agglomerate and is difficult to disperse in a resin matrix, the spray head of an ink-jet printer is blocked, and the color development and the adhesion performance of the inorganic pigment are reduced; inorganic pigments with excessively large particle sizes not only affect the color development effect, but also easily block the spray head. Therefore, the conductivity, the water content and the particle size distribution of the inorganic pigment are cooperatively matched, so that the inorganic pigment can be well dispersed in the matrix resin, and the compatibility of the inorganic pigment and the matrix resin is ensured on the basis of ensuring the clearness of an ink-jet printing pattern, thereby further improving the adhesion performance of the ink-jet printing ink and the matrix material.
As a further improvement of the scheme, the matrix resin is one or more selected from polyurethane acrylic resin, fluorocarbon resin, silicone resin and aldehyde ketone resin. In particular, the matrix resin has good adhesion and weather resistance, and lays a foundation for the weather resistance and the adhesion of the ink-jet printing ink.
Preferably, the alcohol ether solvent is selected from one or more of 1-ethoxy-2-propanol, 1-methoxy-2-propanol, cyclohexanone, propylene glycol diacetate and dipropylene glycol butyl ether.
As a further improvement of the above, the ink-jet printing ink further comprises a dispersant. Specifically, the dispersant is a surfactant having two opposite properties of lipophilicity and hydrophilicity in a molecule, and can uniformly disperse the inorganic pigment which is insoluble in the resin matrix.
Preferably, the dispersant is one or more selected from hydroxyl functional carboxylate containing affinity pigment groups, polymer salt containing acid groups, structured acrylate copolymer, modified polyurethane high polymer and alkyl ammonium salt of high molecular weight copolymer. These dispersants are effective in preventing settling and agglomeration of inorganic pigments, thereby forming stable ink jet printing ink systems.
As a further improvement of the above scheme, the viscosity of the solvent at normal temperature is 3-8cp; the boiling point of the solvent is 150-250 ℃. Specifically, in order to better adapt to matrix resin, solvents with too high or too low viscosity and boiling point cannot be optimally matched with the matrix resin with the viscosity of 100-200cp at normal temperature, and the solvents with proper viscosity and boiling point are selected, so that an ink system with better adhesive force can be obtained.
As a further improvement of the above scheme, the ink-jet printing ink comprises, in parts by weight: 5-15 parts of matrix resin, 5-35 parts of inorganic pigment, 5-10 parts of dispersant, 30-70 parts of solvent and 0-3 parts of auxiliary agent.
Specifically, the optimal proportioning relation among the raw materials and the synergistic interaction among the raw materials are controlled, so that the prepared ink-jet printing ink has good weather resistance and adhesion performance, and has the advantages of clear printed patterns and smooth printing process, and the ink-jet printing ink which is not in the formula range cannot simultaneously meet the optimization of various performances of the ink and the printing.
Preferably, the inorganic pigment is selected from one or more of carbon black, cobalt black, copper chromium black, cobalt blue, cobalt green, titanium yellow, praseodymium yellow, iron oxide red, bismuth yellow and titanium white.
As a further improvement of the above aspect, the ink-jet printing ink further includes an auxiliary agent; the auxiliary agent comprises one or more of a leveling agent, a defoaming agent, an anti-settling agent, an adhesive and a bactericide. The auxiliary agents mainly play their own effects, and further improve the performances of leveling, defoaming, anti-settling, adhesion, sterilization and the like of the ink.
Preferably, the leveling agent is selected from one or more of BYK-352, BYK-354, BYK-3550, BYK-333, BYK-361N and AFCONA-3239.
Preferably, the defoaming agent is selected from one or more of BYK-066N, BYK-065, BYK-067A, AFCONA-2018 and Surfynol DF-110L.
Preferably, the anti-settling agent is selected from one or more of BYK-411, BYK-415, polyethylene wax and modified bentonite.
Preferably, the binding agent is at least one selected from PVP-K-15, PVP-K-35.
Preferably, the bactericide is at least one selected from a Sanyu oily antibacterial mildewcide and a Clariant Nipaguard BPX preservative.
In a second aspect, the present invention provides a method of preparing an ink for ink jet printing.
Specifically, the preparation method of the ink-jet printing ink comprises the following steps:
and grinding the inorganic pigment, and mixing the inorganic pigment with matrix resin and a solvent to prepare the ink-jet printing ink.
Preferably, a method for preparing an ink for ink jet printing, comprising the steps of:
grinding the inorganic pigment, and then carrying out acid washing, alkali washing, water washing and drying to obtain the inorganic pigment for the ink;
mixing matrix resin, a part of solvent and a part of dispersant, and heating and stirring until the matrix resin is completely dissolved to obtain a resin solution;
and adding the inorganic pigment for the ink, the rest of the dispersant and the rest of the solvent into the resin solution, mixing, performing secondary grinding, diluting to adjust the viscosity, and performing circulating filtration to obtain the ink-jet printing ink.
Specifically, the invention adopts a grinding process of multiple graded grinding to realize the particle size distribution of the inorganic pigment in a narrow range. Firstly, adopting a water-adding ball milling mode to carry out coarse grinding on the inorganic pigment, so that the particle size distribution of the inorganic pigment is D90 less than 2 mu m, and D100 less than 4 mu m; and then finely ground by secondary grinding to give an inorganic pigment having a particle size distribution of D50=0.1-0.15 μm, D90=0.2-0.3 μm, and D100<1 μm.
The secondary grinding of the inorganic pigment refers to: firstly, performing primary grinding by adopting a roller ball mill, wherein the volume of the roller ball mill is 176L, and the actual filling rate of the raw material is 75 percent of the volume, namely 132L; the ball milling medium is 95 percent zirconia balls; the size of the ball milling medium is 5-10% of 2mm balls, 10-25% of 3mm balls, 50-70% of 4mm balls and 10-30% of 6mm balls; grinding until the particle size of the inorganic pigment is D50 less than 0.8 μm and D100 less than 2 μm. Then, a sand mill is adopted for secondary grinding, and grinding media are 95% yttrium-stabilized zirconia balls; the size of the ball milling medium is 0.2-0.4mm; sanding to particle size of inorganic pigment D50=0.1-0.15 μm, D90=0.2-0.3 μm, D100<1 μm. The invention adopts a specific grinding process, and can realize the particle size distribution of the inorganic pigment in a narrower range compared with a primary grinding process, thereby further improving the stability of the ink performance and the definition of a printed pattern and being beneficial to improving the adhesive force of the ink and a matrix material.
The inorganic pigment of the invention adopts a secondary grinding process of ball milling before sand grinding, wherein: the working principle of the sand mill is that a solid-liquid phase mixed material which is subjected to pre-dispersion and wetting treatment by a stirrer is input into a cylinder by a material pump, and the material and a grinding medium in the cylinder are stirred by a disperser rotating at a high speed, so that solid particles in the material and the grinding medium generate stronger collision, friction and shearing action mutually, the purposes of accelerating the grinding of particles and dispersing aggregates are achieved, the heat is serious in the grinding process, low-temperature circulating water is required to be introduced for forced cooling, the grinding process does a lot of idle work, the energy consumption is increased, if the ink formed by direct one-time grinding is easy to have wide particle size distribution, long-time grinding is required when coarse particles are large, fine particles are increased, the energy consumption is increased, the pattern effect of inorganic pigments is influenced, and the color development is shallower.
Meanwhile, the invention is also improved in the aspect of ball milling process, the ball milling process utilizes flexible grinding of grinding media and grinding fluid, the grinding media used is ten times of that of a sand mill, over-grinding is not easy to occur, the number of fine particles is small, the heating in the grinding process is low, a cooling device is not required to be added, but the existing ball mill cannot meet the requirement of inorganic pigment particle size distribution, so the invention is improved in the aspect of grinding parameters of the ball mill. The method comprises the following specific steps: ball milling media with different grades are adopted, namely 5-10% of 2mm balls, 10-25% of 3mm balls, 50-70% of 4mm balls and 10-30% of 6mm balls; the invention adopts zirconium balls with smaller diameter, the specific gravity of the zirconium balls is 6, the specific gravity of the high-alumina balls is 3.6, the weight of the zirconium balls added into the ball mill with the same volume is 1.6 times that of the aluminum balls, the impact force and the efficiency in the ink grinding process are far higher than those of the high-alumina balls, the ink ground by the ball mill can meet the ink jet requirement only through sanding in a short time, and the energy consumption is saved on the premise of realizing narrow particle size distribution of inorganic pigment.
Preferably, the steps of acid washing, alkali washing and water washing are mainly used for adjusting and controlling the pH value and the conductivity of the inorganic pigment to reach the pH value of 6.5-8.5 and the conductivity of less than 0.15ms/cm. The water content is mainly realized by drying, so that the water content of the inorganic pigment is lower than 0.3 percent.
Preferably, the process conditions of heating and stirring after mixing the matrix resin, the solvent and part of the dispersant are as follows: stirring at 900-1100r/min, heating at 85-95 deg.C, and stirring for 15-25min.
Preferably, the inorganic pigment for ink, the residual dispersant and the solvent are added to the resin solution, mixed, diluted to adjust viscosity, and subjected to circulation filtration, which means that the circulation filtration is performed by using a filter bag and a filter element with precision of 3 μm, 2 μm and 1 μm, respectively, to further ensure that the maximum size of the ink is less than 1 μm.
A third aspect of the invention provides an ink jet printed aluminum sheet.
Specifically, an ink-jet printing aluminum plate comprises an aluminum plate and an ink-jet layer, wherein the ink-jet layer is formed by printing the ink-jet printing ink.
Compared with the prior art, the technical scheme of the invention at least has the following technical effects or advantages:
the low-viscosity resin with the viscosity of 100-200cp at normal temperature is selected as the matrix resin of the ink-jet printing ink, has good fluidity and low drying rate, and is not easy to block a nozzle during ink-jet printing; the low-carbon alcohol ether solvent with lipophilicity and hydrophilicity is added into the matrix resin, so that the good leveling property of the ink can be kept, the surface tension of a system can be reduced by the alcohol ether solvent, and the wettability and the permeability of the ink can be improved, so that the adhesive force between the ink and the matrix material can be improved; meanwhile, the alcohol ether solvent has better setting performance and can ensure the definition of the pattern after ink-jet printing. The invention adopts inorganic pigment as the colorant of the ink, and can be well adhered to the matrix material under the action of matrix resin and alcohol ether solvent by utilizing the good weather resistance of the inorganic pigment.
The ink-jet printing ink prepared by the invention can overcome the respective defects of the existing roller coating decoration and UV ink-jet, has simple production process, can be carried out under the existing production conditions, and does not need to newly add production equipment. The ink-jet printing ink prepared by the invention is printed on an aluminum plate, has strong adhesive force and rich printed patterns, does not need a plate-making engraving roller, can realize the spray printing of different patterns on each block, and meets the requirement of personalized customization. When the ink-jet printing ink prepared by the invention is applied to an aluminum plate, the ink-jet printing ink has good weather resistance such as acid and alkali resistance, aging resistance, high temperature resistance, freezing resistance and the like, has good adhesive force, and can be used for outdoor decoration, and the printed patterns are clear and have normal color development.
Detailed Description
The present invention is described in detail below by way of examples to facilitate understanding of the present invention by those skilled in the art, and it is to be specifically noted that the examples are provided only for the purpose of further illustrating the present invention and are not to be construed as limiting the scope of the present invention.
Example 1
An ink for ink-jet printing comprises 15 parts of matrix resin, 40 parts of solvent, 35 parts of inorganic pigment, 6 parts of dispersant and 1.3 parts of auxiliary agent. Wherein: the viscosity of the matrix resin at normal temperature is 200cp, and the matrix resin comprises: 5 parts of polyurethane acrylic resin and 10 parts of fluorocarbon resin; the solvent comprises: 14.5 parts of 1-ethoxy-2-propanol, 14 parts of dipropylene glycol butyl ether, 8.5 parts of 1-methoxy-2-propanol and 3 parts of propylene glycol diacetate; the dispersant comprises: EFKA-4310 parts, BYK-9132 parts; 35 parts of inorganic pigment cobalt blue; the auxiliary agent comprises: 0.1 part of flatting agent BYK-333, 0.2 part of defoaming agent BYK-065, 0.1 part of defoaming agent BYK-066N, 0.5 part of anti-settling agent BYK-411, 0.2 part of adhesive PVP-K, and 0.2 part of mildew preventive Clariant Nipaguard BPX.
A method of making an ink-jet printing ink comprising the steps of:
treatment of inorganic pigments: taking 35 parts of cobalt blue pigment, adding 17.5 parts of water and 0.1 part of auxiliary agent sodium tripolyphosphate, carrying out wet ball milling to ensure that the particle size of the inorganic pigment is D90 less than 2 mu m and D100 less than 4 mu m, and repeatedly washing by adopting hydrochloric acid, sodium hydroxide and deionized water to ensure that the pH value of the inorganic pigment is 7 and the conductivity is 0.10ms/cm; and finally, drying to ensure that the water content of the inorganic pigment is 0.2 percent, thus obtaining the inorganic pigment for the ink.
Preparation of resin solution: taking 5 parts of polyurethane acrylic resin, 10 parts of fluorocarbon resin, 6.5 parts of 1-ethoxy-2-propanol, 4 parts of dipropylene glycol butyl ether, 2.5 parts of 1-methoxy-2-propanol, 3 parts of propylene glycol diacetate, EFKA-4310.1 parts and 0.06 part of BYK-9132, adding the mixture into a beaker, heating to 90 ℃ at the stirring speed of 1000r/min, stirring for 20min until the resin is completely dissolved, and cooling for later use.
Preparation of ink-jet printing ink: adding the prepared inorganic pigment for ink and EFKA-4310.9 parts, BYK-9132.94 parts, BYK-333.1 parts, BYK-065.2 parts, BYK-066N 0.1 parts, BYK-411 0.5 parts, PVP-K-35.2 parts and Clariant Nipaguard BPX 0.2 parts into the prepared resin solution, and performing first-stage ball milling until the average particle size D50 is less than 0.8 mu m and the D100 is less than 2 mu m; and then, transferring the raw material subjected to primary grinding into a sand mill for secondary grinding, adding 8 parts of 1-ethoxy-2-propanol, 10 parts of dipropylene glycol butyl ether and 6 parts of 1-methoxy-2-propanol, grinding for 2 hours, finally diluting, adjusting the viscosity, and performing circulating filtration to ensure that the particle size distribution of the inorganic pigment is D50=0.1-0.15 μm, D90=0.2-0.3 μm and D100<1 μm, thus preparing the blue ink for ink-jet printing.
Example 2
An ink for ink-jet printing comprises 10 parts of matrix resin, 70 parts of solvent, 5 parts of inorganic pigment, 6.6 parts of dispersant and 0.6 part of auxiliary agent. Wherein: the viscosity of the matrix resin at normal temperature is 100cp, and the matrix resin comprises: 3.3 parts of aldehyde ketone resin and 6.7 parts of fluorocarbon resin; the solvent comprises: 33 parts of 1-ethoxy-2-propanol, 27 parts of 1-methoxy-2-propanol and 10 parts of propylene glycol diacetate; the dispersant comprises: SOLSPERSE-280002.6 parts, BYK-106 parts; 5 parts of an inorganic pigment iron oxide red pigment; the auxiliary agent comprises: 0.2 part of leveling agent BYK-361N, 0.05 part of defoaming agent BYK-067A, 0.15 part of defoaming agent Surfynol DF-110L, 0.1 part of anti-settling agent modified bentonite and 0.1 part of adhesive PVP-K-15.
A method of making an ink-jet printing ink comprising the steps of:
treatment of inorganic pigments: taking 5 parts of iron oxide red pigment, adding 2.5 parts of water and 0.015 part of auxiliary agent sodium tripolyphosphate, carrying out wet ball milling to ensure that the particle size of the inorganic pigment is D90 less than 2 mu m and D100 less than 4 mu m, and repeatedly washing by adopting hydrochloric acid, sodium hydroxide and deionized water to ensure that the pH value of the inorganic pigment is 7.5 and the conductivity is 0.12ms/cm; and finally, drying to ensure that the water content of the inorganic pigment is 0.25 percent, thereby preparing the inorganic pigment for the ink.
Preparation of resin solution: taking 3.3 parts of aldehyde ketone resin, 6.7 parts of fluorocarbon resin, 33 parts of 1-ethoxy-2-propanol, 20 parts of 1-methoxy-2-propanol, 1.3 parts of SOLSPERSE-28000 and 2 parts of BYK-106, adding into a beaker, heating to 90 ℃ under the condition of stirring speed of 1000r/min, stirring for 20min until the resin is completely dissolved, and cooling for later use.
Preparation of ink-jet printing ink: adding the prepared inorganic pigment for ink, SOLSPERSE-28000.3 parts, BYK-106 parts, BYK-361N 0.2 parts, BYK-067A 0.05 parts, surfynol DF-110L 0.15 parts, modified bentonite 0.1 parts and PVP-K-15.1 parts into the prepared resin solution, and carrying out primary ball milling until the average particle size D50 is less than 0.8 mu m and the D100 is less than 2 mu m; and then, transferring the raw material subjected to primary grinding into a sand mill for secondary grinding, adding 7 parts of 1-methoxy-2-propanol and 10 parts of propylene glycol diacetate, grinding for 2.5 hours, finally diluting to adjust the viscosity, and performing circulating filtration to ensure that the particle size distribution of the inorganic pigment is D50=0.1-0.15 μm, D90=0.2-0.3 μm and D100<1 μm, thus preparing the red ink for ink-jet printing.
Example 3
An ink for ink-jet printing comprises 12 parts of matrix resin, 50 parts of solvent, 20 parts of inorganic pigment, 10 parts of dispersant and 0.8 part of auxiliary agent. Wherein: the viscosity of the matrix resin at normal temperature is 150cp, and the matrix resin comprises: 12 parts of polyurethane acrylic resin; the solvent comprises: 30 parts of 1-ethoxy-2-propanol and 20 parts of 1-methoxy-2-propanol; the dispersant comprises: BYK-106 parts and BYK-9132 parts; 20 parts of inorganic pigment praseodymium yellow material; the auxiliary agent comprises: 0.2 part of flatting agent AFCONA-3239, 0.2 part of defoaming agent AFCONA-2018, 0.1 part of anti-settling agent polyethylene wax, 0.2 part of binding agent PVP-K-15, and 0.1 part of mildew preventive three-rich oil antibacterial mildew preventive.
A method of making an ink-jet printing ink comprising the steps of:
treatment of inorganic pigments: taking 20 parts of praseodymium yellow pigment, adding 10 parts of water and 0.06 part of auxiliary agent sodium tripolyphosphate, carrying out wet ball milling to ensure that the particle size of the inorganic pigment is D90<2 mu m and D100<4 mu m, and repeatedly washing by adopting hydrochloric acid, sodium hydroxide and deionized water to ensure that the pH value of the inorganic pigment is 8 and the conductivity is 0.08ms/cm; and finally, drying to ensure that the water content of the inorganic pigment is 0.15 percent, thereby preparing the inorganic pigment for the ink.
Preparation of resin solution: taking 12 parts of polyurethane acrylic resin, 25 parts of 1-ethoxy-2-propanol, 15 parts of 1-methoxy-2-propanol, 3 parts of BYK-106 and 2 parts of BYK-9132, adding the mixture into a beaker, heating the mixture to 90 ℃ at the stirring speed of 1000r/min, stirring the mixture for 20min until the resin is completely dissolved, and cooling the mixture for later use.
Preparation of ink-jet printing ink: adding the prepared inorganic pigment for ink and BYK-106 parts, BYK-9132 parts, a flatting agent AFCONA-3239.2 parts, a defoaming agent AFCONA-2018.2 parts, an anti-settling agent polyethylene wax 0.1 part, a binding agent PVP-K-15.2 parts and a mildew preventive three-component oily antibacterial mildew preventive 0.1 part into the prepared resin solution, and performing primary ball milling until the average particle size D50 is less than 0.8 mu m and the D100 is less than 2 mu m; and then, transferring the raw material subjected to primary grinding into a sand mill for secondary grinding, adding 6 parts of 1-ethoxy-2-propanol and 4 parts of 1-methoxy-2-propanol, grinding for 3 hours, finally diluting to adjust the viscosity, and performing circulating filtration to ensure that the particle size distribution of the inorganic pigment is D50=0.1-0.15 μm, D90=0.2-0.3 μm and D100<1 μm, thus preparing the yellow ink for ink-jet printing.
Example 4
Example 4 differs from example 1 in that: the inorganic pigment of example 4 had an electrical conductivity of 0.2ms/cm, and the composition and content of other ink-jet printing inks and the method of preparing the ink-jet printing ink were the same as those of example 1.
Example 5
Example 5 differs from example 1 in that: the inorganic pigment of example 5 had a water content of 0.4%, and the composition and content of the other ink-jet printing inks and the method of preparing the ink-jet printing ink were the same as those of example 1.
Example 6
The composition and content of the ink for ink jet printing of example 6 were the same as those of example 1.
A method of preparing an ink jet printing ink comprising the steps of:
treatment of inorganic pigments: taking 35 parts of cobalt blue pigment, adding 17.5 parts of water and 0.1 part of auxiliary agent sodium tripolyphosphate, carrying out wet ball milling to ensure that the particle size of the inorganic pigment is D90=0.15 mu m and D100 is less than 3 mu m, and repeatedly washing by adopting hydrochloric acid, sodium hydroxide and deionized water to ensure that the pH value of the inorganic pigment is 7 and the conductivity is 0.10ms/cm; and finally, drying to ensure that the water content of the inorganic pigment is 0.2 percent, thereby preparing the inorganic pigment for the ink.
Preparation of resin solution: taking 5 parts of polyurethane acrylic resin, 10 parts of fluorocarbon resin, 6.5 parts of 1-ethoxy-2-propanol, 4 parts of dipropylene glycol butyl ether, 2.5 parts of 1-methoxy-2-propanol, 3 parts of propylene glycol diacetate, EFKA-4310.1 parts and 0.06 part of BYK-9132, adding the mixture into a beaker, heating to 90 ℃ at the stirring speed of 1000r/min, stirring for 20min until the resin is completely dissolved, and cooling for later use.
Preparation of ink-jet printing ink: adding cobalt blue pigment and EFKA-4310.9 parts, BYK-9132.94 parts, BYK-333.0.1 part, BYK-065.2 parts, BYK-066N 0.1 part, BYK-411.0.5 part, PVP-K-35.2 parts and Clariant Nipaguard BPX 0.2 part into the prepared resin solution, carrying out primary ball milling, wherein ball milling media are high-alumina balls with the same size, finally diluting and adjusting viscosity, carrying out circulating filtration, and obtaining the inorganic pigment with the particle size distribution of D50=0.6-0.8 μm, D90=1-2 μm and D100<4 μm, thus obtaining the ink-jet printing blue ink.
Comparative example 1
Comparative example 1 differs from example 1 in that: the viscosity of the matrix resin of comparative example 1 was 80cp, and the composition and content of the other ink-jet printing inks and the preparation method of the ink-jet printing ink were the same as in example 1.
Comparative example 2
Comparative example 2 differs from example 1 in that: the viscosity of the matrix resin of comparative example 2 was 250cp, and the composition and content of the other ink-jet printing inks and the preparation method of the ink-jet printing ink were the same as in example 1.
Comparative example 3
Comparative example 3 differs from example 1 in that: comparative example 3 the solvent was a low boiling point ester solvent, methyl oleate, the composition and content of other ink-jet printing inks, and the preparation method of the ink-jet printing ink were the same as in example 1.
Comparative example 4
The ink mainly comprises inorganic pigment, auxiliary agent, high boiling point hydrocarbon solvent and no resin.
Comparative example 5
Commercially available UV inks are used, which mainly consist of organic dyes, polymerizable prepolymers, photosensitive monomers, and photoinitiators.
And (3) performance detection:
the ink-jet printing inks of the examples and comparative examples were printed on the surface of an aluminum plate to prepare ink-jet printed aluminum plate samples, and each sample was subjected to a weather resistance and adhesion test, in which: the detection method of the acid resistance is based on HG/T4343-20125.4.11; the alkali resistance detection method is carried out according to the regulation of GB/T9265; the aging resistance is determined according to JC/T287-20136.4.13; the detection method of the adhesive force is carried out according to the regulation of GB/T9286; the high temperature resistance and freezing resistance were observed by subjecting the samples to 50 deg.C, 600 deg.C, -20 deg.C and-30 deg.C, respectively, and the specific test results are shown in Table 1.
Table 1: performance comparison table of various ink-jet printing aluminum plate samples
From the results of the property comparison in table 1, it can be seen that: the samples of examples 1-3 have good aging resistance, good adhesion, clear printed pattern and normal color development.
Example 4 compared with example 1, the inorganic pigment has higher conductivity, clear pattern can be achieved in the early stage of printing, color development is normal, but after continuous operation for about one week, crystals are on the surface of the nozzle, and the nozzle starts to be blocked; compared with the embodiment 1, the water content of the inorganic pigment is higher in the embodiment 4, the pattern can be clear in the early stage of printing, the color development is normal, and after the operation is carried out for about one month, a filter is blocked, and a spray head has a wire pulling phenomenon; example 6 compared with example 1, the inorganic pigment obtained by the primary grinding process has uneven particle size, wide particle size distribution and light pattern color, and the pattern has intermittent stringing phenomenon during continuous printing. Therefore, the conductivity, the water content and the particle size distribution of the inorganic pigment need to be controlled within a specific parameter range at the same time, so that the inorganic pigment can be well dispersed in the matrix resin, and the adhesion performance of the ink-jet printing ink and the matrix material is further improved on the basis of ensuring the clearness of the ink-jet printing pattern.
Comparative example 1 compared to example 1, with a lower viscosity matrix resin, the printed pattern was slightly dispersed, the color was developed normally, and in the continuous printing test, the head had ink hanging; comparative example 2 compared to example 1, with a higher viscosity matrix resin, the pattern was clear, the color development was normal, and the continuous printed pattern was ink-deficient and defective.
Comparative example 3 compared to example 1, with the use of the low-boiling-point ester solvent, the resin was not completely dissolved in the ester solvent, resulting in agglomeration of the inorganic pigment, clogging of the nozzle, and failure to print normally.
Comparative example 4 used a commercially available inorganic pigment ceramic ink, which did not adhere to an aluminum plate and the pattern was scattered; comparative example 5 uses commercially available UV inks, all of which have much lower weatherability than examples 1-3.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. And obvious variations or modifications therefrom are intended to be within the scope of the invention.
Claims (6)
1. The ink-jet printing ink is characterized by comprising the following raw materials in parts by weight: 5-15 parts of matrix resin, 5-35 parts of inorganic pigment, 5-10 parts of dispersant, 30-70 parts of alcohol ether solvent and 0-3 parts of auxiliary agent;
the viscosity of the matrix resin is 100-200cp at normal temperature;
the inorganic pigment has an electrical conductivity of <0.15ms/cm, a water content of <0.3%, a particle size distribution of D50=0.1-0.15 μm, D90=0.2-0.3 μm, and D100<1 μm;
the matrix resin is selected from one or more of polyurethane acrylic resin, fluorocarbon resin and aldehyde ketone resin;
the alcohol ether solvent is selected from one or more of 1-ethoxy-2-propanol, 1-methoxy-2-propanol, propylene glycol diacetate and dipropylene glycol butyl ether;
the ink-jet printing ink is prepared by adopting a preparation method comprising the following steps:
grinding the inorganic pigment, and then carrying out acid washing, alkali washing, water washing and drying to obtain the inorganic pigment for the ink;
mixing matrix resin, part of solvent and part of dispersant, heating and stirring until the matrix resin is dissolved to obtain resin solution;
adding the inorganic pigment for the ink, the rest of the dispersant and the rest of the solvent into the resin solution, mixing, performing secondary grinding, diluting to adjust the viscosity, and performing circulating filtration to obtain the ink-jet printing ink;
the secondary grinding comprises the following steps: firstly, performing primary grinding by adopting a roller ball mill, wherein the ball milling medium is 95% zirconia balls; the size of the ball milling medium is 5-10% of 2mm balls, 10-25% of 3mm balls, 50-70% of 4mm balls and 10-30% of 6mm balls; grinding until the particle size of the inorganic pigment is D50 less than 0.8 mu m and D100 less than 2 mu m; then, a sand mill is adopted for secondary grinding, and grinding media are 95% yttrium-stabilized zirconia balls; the size of the ball milling medium is 0.2-0.4mm; sanding to obtain inorganic pigment with particle diameter D50=0.1-0.15 μm, D90=0.2-0.3 μm, and D100<1 μm.
2. The ink jet printing ink of claim 1, wherein the inorganic pigment is selected from one or more of carbon black, cobalt black, copper chromium black, cobalt blue, cobalt green, titanium yellow, praseodymium yellow, iron oxide red, bismuth yellow, and titanium white.
3. The ink for inkjet printing according to claim 1, wherein the alcohol ether solvent has a boiling point of 150 to 250 ℃.
4. The ink-jet printing ink of claim 1, wherein the dispersant is selected from one or more of hydroxy-functional carboxylate containing affinity pigment groups, polymer salt containing acid groups, structured acrylate copolymer, modified polyurethane polymer, alkyl ammonium salt of high molecular weight copolymer.
5. The ink-jet printing ink as claimed in claim 1, wherein the auxiliary agent comprises one or more of a leveling agent, an antifoaming agent, an anti-settling agent, a binder, and a bactericide.
6. An ink jet printing aluminum plate, comprising an aluminum plate and an ink jet layer printed with the ink jet printing ink of any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110903750.XA CN113637356B (en) | 2021-08-06 | 2021-08-06 | Ink-jet printing ink for aluminum plate and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110903750.XA CN113637356B (en) | 2021-08-06 | 2021-08-06 | Ink-jet printing ink for aluminum plate and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113637356A CN113637356A (en) | 2021-11-12 |
| CN113637356B true CN113637356B (en) | 2023-01-24 |
Family
ID=78419958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110903750.XA Active CN113637356B (en) | 2021-08-06 | 2021-08-06 | Ink-jet printing ink for aluminum plate and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113637356B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101125979A (en) * | 2006-08-18 | 2008-02-20 | 无锡市雅丽涂料有限公司 | Thermosetting fluorine-carbon resin for metal coiled material and coating thereof |
| CN110172271A (en) * | 2019-05-14 | 2019-08-27 | 佛山市沃特布恩新型材料有限公司 | A kind of dedicated nano-magnetic printing inks of aluminium sheet coiled material solid paint and preparation method thereof |
| CN110922825A (en) * | 2019-12-11 | 2020-03-27 | 天津科瑞达涂料化工有限公司 | Weather-proof anticorrosive PVDF (polyvinylidene fluoride) fluorocarbon coating for special metal substrate |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112080173A (en) * | 2020-09-15 | 2020-12-15 | 珠海华彩新材料科技有限公司 | High-temperature-resistant inorganic inkjet ink and application thereof |
-
2021
- 2021-08-06 CN CN202110903750.XA patent/CN113637356B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101125979A (en) * | 2006-08-18 | 2008-02-20 | 无锡市雅丽涂料有限公司 | Thermosetting fluorine-carbon resin for metal coiled material and coating thereof |
| CN110172271A (en) * | 2019-05-14 | 2019-08-27 | 佛山市沃特布恩新型材料有限公司 | A kind of dedicated nano-magnetic printing inks of aluminium sheet coiled material solid paint and preparation method thereof |
| CN110922825A (en) * | 2019-12-11 | 2020-03-27 | 天津科瑞达涂料化工有限公司 | Weather-proof anticorrosive PVDF (polyvinylidene fluoride) fluorocarbon coating for special metal substrate |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113637356A (en) | 2021-11-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100406527C (en) | Black pigment ink for ink-jet printer and method for preparing the same | |
| EP1544261B1 (en) | Ink composition for ink-jet recording, recording method using same, and record | |
| CN107400413B (en) | Nano water-based pigment ink-jet ink and preparation method thereof | |
| CN108276830A (en) | A kind of ceramic ink jet printing water-based ink and preparation method thereof | |
| JP2001164165A (en) | Composition and preparation process of aqueous ink | |
| KR20120043931A (en) | Ink composition for flexo printing | |
| CN101891984A (en) | Printing ink combination, printing ink and method for forming image on ceramic surface | |
| CN104004414A (en) | Ink set for ink jet recording, and recording apparatus | |
| CN117903630B (en) | Black ceramic ink without glaze-ink separation and preparation method and application method thereof | |
| CN107880648A (en) | A kind of waterborne digital printing dye sublimation ink-jet ink | |
| CN113881283A (en) | Water-based pigment ink | |
| CN108641481A (en) | Environment-friendly water-based digital jet ink used for decorative paper and its preparation method and application | |
| CN101519554B (en) | Microbead latex ink and preparation method thereof | |
| CN1821321A (en) | Water paint ink for ink jet printer | |
| CN106189512A (en) | A kind of aqueous UV ink for inkjet printing and preparation method thereof | |
| CN105440785A (en) | Gravure water-based ink for ivory board and printing method | |
| CN1553942A (en) | Ink for ink jet recording | |
| CN108084797B (en) | Foaming printing ink for ink-jet printing | |
| CN113637356B (en) | Ink-jet printing ink for aluminum plate and preparation method thereof | |
| JP2013166894A (en) | Inkjet ink composition, image forming method, and printed article | |
| CN107325654B (en) | A kind of air brushing coating and preparation method thereof adapting to Latex ink | |
| CN115521413B (en) | Water-based dispersing agent, water-based ceramic ink, and preparation method and application thereof | |
| TWI422650B (en) | Solvent-based, non-coating sublimation inkjet ink composition | |
| CN105440798A (en) | Ink for ink-jet printer and preparing method thereof | |
| CN105440799B (en) | A kind of water-based jet ink 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 |