WO2022067690A1 - Ink for led display screen and led display screen - Google Patents

Ink for led display screen and led display screen Download PDF

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Publication number
WO2022067690A1
WO2022067690A1 PCT/CN2020/119455 CN2020119455W WO2022067690A1 WO 2022067690 A1 WO2022067690 A1 WO 2022067690A1 CN 2020119455 W CN2020119455 W CN 2020119455W WO 2022067690 A1 WO2022067690 A1 WO 2022067690A1
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WIPO (PCT)
Prior art keywords
ink
led display
display screen
agent
present application
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PCT/CN2020/119455
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French (fr)
Chinese (zh)
Inventor
李小明
徐勋明
夏建平
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深圳市艾比森光电股份有限公司
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Priority to PCT/CN2020/119455 priority Critical patent/WO2022067690A1/en
Publication of WO2022067690A1 publication Critical patent/WO2022067690A1/en

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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
    • C09D11/102—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions other than those only involving unsaturated carbon-to-carbon bonds
    • 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
    • C09D11/106—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C09D11/107—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds from unsaturated acids or derivatives thereof

Definitions

  • the present application relates to the technical field of LED display screens, in particular to an ink for LED display screens and an LED display screen.
  • LED (Light Emitting Diode) display has the characteristics of high brightness, bright colors, high luminous efficiency, high contrast, short response time, wide operating temperature range, low energy consumption, etc. It is widely used in stage display equipment, advertising display equipment, data Visual display equipment as well as commercial display equipment.
  • the LED display is formed by splicing multiple PCB (Printed Circuit Board) boards, and the LED lamp beads are welded on the PCB board by surface mount technology (SMT, Surface Mounted Technology). Due to the inconsistent ink color of different PCB boards, the display will have color difference after splicing, which will affect the display effect of the LED display; at the same time, due to the small welding area, the bonding force between the LED lamp beads and the PCB board is weak, and the impact resistance is poor.
  • SMT Surface Mounted Technology
  • the present application provides an ink for an LED display screen, which has strong covering power, can effectively eliminate the color difference of the LED display screen, and has good adhesion performance to both the PCB board and the LED lamp beads of the LED display screen. , which can effectively strengthen the LED lamp beads and improve the anti-collision ability of the LED lamp beads.
  • a first aspect of the present application provides an ink for an LED display screen, and the ink for an LED display screen includes each raw material in the following mass percentages:
  • Acrylic resin 50%-60%
  • Epoxy resin 10%-20%
  • Curing agent 2%-5%
  • the ink for LED display in this application is cross-linked by a curing agent through the combination of acrylic resin and epoxy resin.
  • the lamp beads have good adhesion performance; the filler has high hardness, which can improve the mechanical properties of the ink layer formed by the ink; the pigment can eliminate the color difference of the PCB board; the above combination can effectively solve the color difference of the LED display and LED lamp beads.
  • the problem of poor impact resistance is provided.
  • the pigment includes carbon black; the average particle size of the pigment is 1 nm-100 nm. Carbon black has good stability and tinting strength. In the particle size range of 1nm-100nm, the pigment has good dispersibility, which can ensure that the ink is uniform and will not block the inkjet machine during the spraying process.
  • the filler includes one or more of titanium dioxide, silicon dioxide, calcium sulfate, calcium carbonate, aluminum oxide and aluminum nitride; the particle size of the filler is 1 nm-500 nm.
  • the filler can enhance the hardness of the ink layer formed by the ink and improve the mechanical properties of the ink layer.
  • the above particle size range can ensure the impact resistance of the ink and the uniform dispersion of the filler in the ink.
  • the viscosity of the acrylic resin at 25°C is 300mPa ⁇ s-3000mPa ⁇ s
  • the viscosity of the epoxy resin at 25°C is 1000mPa ⁇ s-3000mPa ⁇ s.
  • Acrylic resin and epoxy resin are used as the matrix resin of the ink, and their viscosity is directly related to the viscosity of the ink. Under the viscosity of the above range, the ink can ensure that the ink has good spraying performance.
  • the curing agent includes one or more of modified amine curing agents, dicyandiamide curing agents and imidazole curing agents.
  • the curing agent is a latent curing agent.
  • the latent curing agent has a certain storage stability at room temperature. After heating and heating, the curing agent can quickly release the reactive activity to cure the resin, which is beneficial to control the reaction process and ensure the stability of the ink.
  • the adjuvant includes one or more of a toughening agent, a diluent, an antifoaming agent, a leveling agent and a dispersing agent.
  • a toughener can enhance the toughness of the ink layer formed by the ink, improve the elastic modulus, reduce the thermal expansion coefficient, and make the ink layer have high impact resistance and good heat resistance; adding a diluent can reduce the viscosity of the ink and improve the fluidity.
  • defoamer can effectively reduce the probability of bubbles generated during the preparation and use of the ink, and improve the uniformity of the ink;
  • addition of a leveling agent can reduce the surface tension of the ink and promote the ink to form a smooth, smooth and uniform surface during the curing process.
  • Adding dispersant can promote the uniform dispersion of pigments and fillers in the ink and prevent particle agglomeration.
  • the ink for the LED display screen includes each raw material in the following mass percentages:
  • Acrylic resin 50%-60%
  • Epoxy resin 10%-20%
  • Curing agent 2%-5%
  • Toughening agent 5%-10%
  • Leveling agent 0.5%-2%
  • Dispersant 0.5%-2%.
  • Adding the above content of additives can ensure the uniform dispersion of the pigment in the ink, and maintain the fluidity of the ink, which is conducive to the formation of a uniform ink layer.
  • the particle size of the ink particles for the LED display screen is 1 ⁇ m-10 ⁇ m.
  • the tinting strength and covering effect of the ink are good, which can effectively eliminate the color difference of the PCB board of the LED display screen, and will not block the inkjet device, ensuring a smooth inkjet process.
  • the viscosity of the ink for LED display at 25° C. is 300 mPa ⁇ s-1500 mPa ⁇ s.
  • the ink has good fluidity, so that the inkjet machine can smoothly spray the ink on the gap between the LED lamp beads and evenly cover the surface of the PCB board, and the ink has good cohesion, which will not cause flying ink. .
  • the tensile shear strength of the ink for the LED display screen tested on 45# steel is 8MPa ⁇ s-40MPa ⁇ s.
  • the ink can effectively strengthen the LED lamp beads and improve the anti-collision ability of the lamp beads.
  • the ink for the LED display screen provided in the first aspect of the application has good covering power, can effectively eliminate the color difference of the PCB board of the LED display screen, and the ink has good adhesion performance to the PCB board and the LED lamp beads, and is not easy to fall off after spraying ;
  • the ink layer formed after curing of the ink has good toughness and impact resistance. Spraying the ink on the gap between the LED lamp beads can strengthen the LED lamp beads and improve the anti-collision performance of the LED lamp beads; the ink has good fluidity and small particles.
  • a second aspect of the present application provides an LED display screen, comprising an ink layer formed from the ink for an LED display screen described in the first aspect of the present application.
  • the thickness of the ink layer formed by the ink for the LED display screen is 0.1 mm-1 mm.
  • the ink for LED display screen provided by this application, the ink layer formed after curing has strong toughness and impact resistance, and the application in LED display screen can significantly improve the anti-collision performance of LED lamp beads and increase the firmness of LED display screen.
  • the ink layer can effectively eliminate the color difference of the PCB board of the LED display, and can improve the ink color consistency of the LED display.
  • FIG. 1 is a schematic structural diagram (front view) of an LED display screen according to an embodiment of the application.
  • FIG. 2 is a schematic structural diagram (top view) of an LED display screen according to an embodiment of the present application.
  • the application provides an ink for an LED display screen, and the ink for an LED display screen includes the following raw materials in mass percentages:
  • Acrylic resin 50%-60%
  • Epoxy resin 10%-20%
  • Curing agent 2%-5%
  • the acrylic resin comprises one of methyl acrylate, ethyl acrylate, methyl methacrylate, ethyl methacrylate, propyl methacrylate, n-butyl acrylate and n-butyl methacrylate
  • Appropriate content of acrylic resin can ensure the durability of the ink, improve the adhesion of the ink, and reduce the cost of the ink.
  • the mass percentage content of acrylic resin in the ink for LED display screen is 50%-60%, specifically, but not limited to 50%, 51%, 53%, 54.5%, 55%, 57%, 60%.
  • the solid content of the acrylic resin is 30%-80%. Specifically, it may be, but not limited to, 30%, 40%, 50%, 60%, 70%, and 80%. Selecting the acrylic resin with appropriate solid content can ensure that the content of acrylic resin in the ink system is sufficient, and at the same time, it is conducive to fully mixing and reacting with other components, thereby obtaining an ink with good performance and uniform components.
  • the viscosity of the acrylic resin has a great influence on the fluidity of the ink.
  • the viscosity of the acrylic resin at 25° C. is 300 mPa ⁇ s to 3000 mPa ⁇ s.
  • the viscosity of the acrylic resin at 25°C can specifically be, but not limited to, 300mPa ⁇ s, 400mPa ⁇ s, 500mPa ⁇ s, 600mPa ⁇ s, 700mPa ⁇ s, 900mPa ⁇ s, 1100mPa ⁇ s, 1600mPa ⁇ s, 2000mPa ⁇ s, 2500mPa ⁇ s, 3000mPa ⁇ s.
  • the epoxy resin plays the role of enhancing the adhesion of the ink to the LED display PCB board and the LED lamp beads, and improving the stability of the ink layer.
  • the epoxy resin includes one or more of bisphenol A epoxy resin, bisphenol F epoxy resin, aliphatic epoxy resin, polycyclic aromatic epoxy resin and novolac epoxy resin. variety.
  • the epoxy equivalent of the epoxy resin is 150 g/eq-200 g/eq.
  • the epoxy resin accounts for 10%-20% by mass of the ink for the LED display screen. Specifically, but not limited to, 10%, 13%, 14%, 15%, 17%, 20%.
  • the adhesion and heat resistance of the ink can be improved by adding appropriate content of epoxy resin.
  • the viscosity of the epoxy resin at 25° C. is 1000 mPa ⁇ s-3000 mPa ⁇ s, for example, 1000 mPa ⁇ s, 1300 mPa ⁇ s, 1500 mPa ⁇ s, 2000 mPa ⁇ s, 2500 mPa ⁇ s, and 3000 mPa ⁇ s.
  • the curing agent can be cross-linked with epoxy resin and acrylic resin to form a three-dimensional network structure.
  • the curing agent is a latent curing agent, including one or more of a modified amine curing agent, a dicyandiamide curing agent, and an imidazole curing agent.
  • the modified amine curing agent may include one or more of boron trifluoride monoethylamine, boron trifluoride aniline, boron trifluoride benzylamine and boron trifluoride pyridine.
  • the imidazole-based curing agent may include one or more of imidazole, 2-methylimidazole, 2-ethylimidazole, 2, 4-dimethylimidazole, and 2-ethyl 4-methylimidazole.
  • the dicyandiamide curing agent may include one or more of dicyandiamide and aniline-modified dicyandiamide.
  • Latent curing agent has storage stability at room temperature, and can release reactive activity after heating, so as to achieve the purpose of rapid curing of ink.
  • the mass percentage content of the curing agent in the ink for the LED display screen is 2%-5%. Specifically, it can be, but not limited to, 2%, 2.5%, 3%, 4%, 4.5%, and 5%.
  • the LED display will generate a lot of heat during use.
  • the use of a curing agent with a higher melting point and glass transition temperature can ensure that the ink layer is not easy to soften and fall off at a higher temperature, thereby extending the service life of the LED display.
  • the melting point and glass transition temperature of the curing agent are above 70°C.
  • the melting point of the curing agent is 80°C-170°C
  • the glass transition temperature is 80°C-140°C.
  • the stability of the curing agent at 40° C. is 3 weeks to 4 weeks. Longer stability can ensure that the ink has stable fluidity during the spraying process, thereby forming a uniform ink layer.
  • the average particle size (D50) of the curing agent is 1 ⁇ m-10 ⁇ m, specifically, the average particle size may be, but not limited to, 1 ⁇ m, 2 ⁇ m, 5 ⁇ m, 7 ⁇ m, 9 ⁇ m, and 10 ⁇ m.
  • Appropriate particle size curing agent can ensure that the ink does not block the nozzle, so that the ink can be ejected smoothly.
  • the pigment is used to eliminate the color difference of the PCB board of the LED display screen.
  • the pigment is a carbon black pigment.
  • the mass percentage content of the pigment in the ink for the LED display screen is 1%-3%, specifically, but not limited to, 1%, 1.2%, 1.5%, 1.8%, 2%, 2.2%, 2.5% %, 2.7%, 3%.
  • the average primary particle size of the pigment is 1 nm-100 nm, specifically, but not limited to, 1 nm, 10 nm, 15 nm, 20 nm, 30 nm, 35 nm, 40 nm, 50 nm, 60 nm, 70 nm, and 100 nm.
  • Pigments with an appropriate particle size range have good tinting strength and covering effect, which can effectively eliminate the color difference of the PCB board of the LED display screen, and will not block the nozzle, so that the ink can be ejected smoothly.
  • the pigment may also be surface-treated with a surfactant to avoid agglomeration of the pigment.
  • the particle size of the modified pigment is also in the range of 1 nm-100 nm.
  • the DBP oil absorption value of the pigment affects the dispersibility of the pigment in the ink.
  • the DBP oil absorption value of the pigment is 10cc/100g-250cc/100g.
  • the DBP oil absorption value may be, but not limited to, 10cc/100g, 40cc/100g, 50cc/100g, 65cc/100g, 85cc/100g, 125cc/100g, 175cc/100g or 185cc/100g, 200cc/100g, 250cc/100g .
  • adding fillers can improve the mechanical properties of the ink layer, increase the strength of the ink layer, and improve the impact resistance of the ink layer.
  • the filler includes one or more of titanium dioxide, silicon dioxide, calcium sulfate, calcium carbonate, aluminum oxide, and aluminum nitride.
  • the mass percentage content of the filler in the ink for the LED display screen is 5%-10%. Specifically, it can be, but not limited to, 5%, 6%, 6.5%, 7%, 7.5%, 8%, 9%, and 10%.
  • the filler is spherical or quasi-spherical particles.
  • the spherical filler can effectively disperse the stress of the ink layer during the impact process, thereby improving the stability of the ink layer and ensuring that the LED lamp is not knocked off.
  • the particle size of the filler is 1 nm-500 nm. Further, the particle size of the filler is 1 nm-100 nm.
  • the filler within the above particle size range can be uniformly dispersed in the ink, and will not block the ink nozzle, ensuring the uniform spraying of the ink.
  • the filler may also be surface-modified by a surfactant (eg, sodium dodecylbenzenesulfonate, sodium laurate, etc.) and/or a coupling agent, so as to avoid agglomeration of the filler.
  • a surfactant eg, sodium dodecylbenzenesulfonate, sodium laurate, etc.
  • a coupling agent eg, sodium dodecylbenzenesulfonate, sodium laurate, etc.
  • the particle size of the modified filler is also in the range of 1 nm-500 nm.
  • the adjuvant includes one or more of a toughening agent, a diluent, a defoaming agent, a leveling agent and a dispersing agent.
  • the toughening agent includes one or more of polyurethane type epoxy resin, dimer acid type epoxy resin and rubber type epoxy resin.
  • the toughening agent accounts for 5%-10% by mass of the ink for the LED display screen. Specifically, it can be, but not limited to, 5%, 6%, 6.5%, 7%, 7.5%, 8%, 9%, and 10%. Toughening agent with appropriate viscosity can adjust the fluidity of ink and obtain ink with uniform composition.
  • the viscosity of the toughening agent at 25°C is 300mPa ⁇ s-2000mPa ⁇ s, specifically, but not limited to, 300mPa ⁇ s, 500mPa ⁇ s, 600mPa ⁇ s, 700mPa ⁇ s, 800mPa ⁇ s, 1000mPa ⁇ s, 1500mPa ⁇ s, 2000mPa ⁇ s.
  • adding a diluent can reduce the viscosity of the ink and improve the fluidity of the ink, which is beneficial to the spraying of the ink.
  • the diluent includes cyclohexane-1,2-dicarboxylate diglycidyl ester, tetrahydrophthalic acid diglycidyl ester, tolyl glycidyl ether, o-tolyl glycidyl ether, new One or more of pentanediol diglycidyl ether, hexanediol diglycidyl ether, polypropylene glycol diglycidyl ether and ethylene glycol diglycidyl ether.
  • the diluent accounts for 10%-15% by mass of the ink for the LED display screen. Specifically, it can be, but not limited to, 10%, 11%, 12%, 13%, 14%, and 15%.
  • the addition of the above-mentioned diluent by mass percentage can ensure that the ink has good fluidity, which is beneficial to the spraying of the ink.
  • the viscosity of the diluent at 25° C. is 1 mPa ⁇ s-500 mPa ⁇ s. Further, the viscosity of the diluent at 25° C. is 5 mPa ⁇ s-100 mPa ⁇ s. Using the diluent in the above viscosity range can effectively reduce the viscosity of the resin and increase the fluidity of the ink.
  • the defoaming agent can effectively reduce the probability of generating air bubbles during the preparation and use of the ink, and improve the reliability of the ink layer.
  • the defoaming agent includes one or more of a silicone defoaming agent and a non-silicone defoaming agent.
  • the defoaming agent includes a polyether-modified silicone defoaming agent.
  • the defoaming agent may include polyether-modified polysiloxane.
  • the above defoamer has strong antifoaming ability, non-toxicity and good dispersibility, which can effectively reduce the probability of generating bubbles during the preparation and use of the ink, and improve the reliability of the ink layer.
  • the defoaming agent accounts for 0.5%-2% by mass of the ink for the LED display screen. Specifically, it can be, but not limited to, 0.5%, 0.7%, 0.8%, 1%, 1.2%, 1.4%, 1.5%, 1.8%, 2%.
  • the viscosity of the defoaming agent is 10cs-2000cs. Further, the viscosity of the defoaming agent is 50cs-1000cs.
  • the leveling agent includes one or more of a fluorocarbon-based leveling agent, an acrylic-based leveling agent, and a silicone-based leveling agent.
  • the leveling agent may include a polyether-modified silicone leveling agent.
  • the leveling agent may include polyether-modified polydimethylsiloxane.
  • the leveling agent accounts for 0.5%-2% by mass of the ink for the LED display screen.
  • the viscosity of the leveling agent at 25° C. is 500 mPa ⁇ s to 1000 mPa ⁇ s, and the density is 1.04 g/cm 3 to 1.07 g/cm 3 .
  • Using the leveling agent in the above viscosity and density range can effectively reduce the surface tension of the ink and promote the formation of a smooth ink layer.
  • the dispersant includes one or more of acrylate-type dispersants, polyurethane-type dispersants, and polyester-type dispersants. Further, the dispersant is a polyester dispersant. Further, the dispersant is modified polycaprolactone. The above dispersants have anchoring groups, which can entangle and adsorb with the resin, and coat the pigment and filler particles at the same time, thereby improving the color stability and uniformity of the ink. In the embodiment of the present application, the mass percentage content of the dispersant in the ink for LED display screen is 0.5%-2%.
  • the viscosity of the dispersant at 25° C. is 40,000 mPa ⁇ s to 60,000 mPa ⁇ s. Specifically, but not limited to, 40000 mPa ⁇ s, 45000 mPa ⁇ s, 50000 mPa ⁇ s, 55000 mPa ⁇ s, and 60000 mPa ⁇ s. Dispersants of appropriate viscosity can improve the dispersibility of pigments and fillers in resins.
  • the LED display ink provided in this application has good adhesion to the PCB board and LED lamp beads, the ink composition is uniform, the stability is good, and it has good covering power, which can significantly eliminate the color difference of the PCB board of the LED display screen. ;
  • the ink layer formed after curing of the ink has strong toughness and impact resistance, and spraying on the gap between the LED lamp beads can effectively strengthen the LED lamp beads and greatly improve the anti-collision performance of the LED lamp beads.
  • the viscosity of the obtained ink for LED display screen is 300 mPa ⁇ s-1500 mPa ⁇ s. Specifically, but not limited to, 300 mPa ⁇ s, 500 mPa ⁇ s, 600 mPa ⁇ s, 750 mPa ⁇ s, 800 mPa ⁇ s, 1000 mPa ⁇ s, 1200 mPa ⁇ s, and 1500 mPa ⁇ s.
  • the particle size of the ink for the LED display screen is 1 ⁇ m-10 ⁇ m, specifically, but not limited to, 1 ⁇ m, 2 ⁇ m, 5 ⁇ m, and 10 ⁇ m.
  • the OD value of the covering ratio of the ink for the LED display screen is greater than 3. Further, the OD value of the covering ratio of the ink is greater than 4.
  • the ink for the LED display screen can be formed into ink layers of different thicknesses according to actual needs.
  • the ink for LED display screen can be used to form an ink layer with a thickness of 0.1 mm-1 mm. Specifically, it can be, but not limited to, 0.1 mm, 0.3 mm, 0.5 mm, 0.7 mm, 0.8 mm, and 1 mm.
  • the ink layer within the above thickness range can completely cover the gaps and edges of the LED display lamp beads, and eliminate the color difference of the PCB board.
  • the tensile shear strength of the ink for LED display on 45# steel is greater than or equal to 8MPa ⁇ s.
  • the tensile shear strength of the ink for LED display screen tested on 45# steel is 8MPa ⁇ s-40MPa ⁇ s, which can be, but not limited to, 8MPa ⁇ s, 10MPa ⁇ s, 12MPa ⁇ s, 15MPa ⁇ s, 19MPa ⁇ s, 24MPa ⁇ s, 27MPa ⁇ s, 32MPa ⁇ s, 35MPa ⁇ s, 40MPa ⁇ s.
  • the application also provides a preparation method of ink for LED display screen, comprising the following steps:
  • Acrylic resin 50%-60%
  • Epoxy resin 10%-20%
  • Curing agent 2%-5%
  • the mixing may be specifically stirring and mixing, and the stirring temperature is less than or equal to 45°C; in some embodiments of the present application, the stirring temperature is 15°C-45°C. Specifically, but not limited to, 45°C, 40°C, 37°C, 30°C, 25°C, and 15°C.
  • Mixing the raw materials at a suitable temperature can ensure that the organic components in the ink are not easily volatilized, the curing agent will not release the activity in advance, and the components can be uniformly dispersed.
  • the stirring speed in the stirring and mixing process is 500r/min-2000r/min; the stirring time is 20min-80min. In some embodiments of the present application, the stirring speed is 800r/min-1000r/min, and the stirring time is 40min-60min.
  • the adjuvant may include one or more of a toughening agent, a diluent, an antifoaming agent, a leveling agent and a dispersing agent.
  • a toughening agent e.g., a diluent
  • an antifoaming agent e.g., a diluent
  • a leveling agent e.g., a dispersing agent
  • the equipment used in the grinding process includes one of a disc grinder, a rotary shaft grinder and a three-roll grinder.
  • the grinding process can be as follows: the mixture is put into a three-roll mill for grinding, the grinding speed is 400r/min-600r/min, and the time is 30min-60min. In a specific embodiment, the grinding speed is 460r/min, and the time is 35min.
  • the preparation method of ink for LED display screen includes: firstly mixing acrylic resin, epoxy resin, curing agent and toughening agent for the first time to obtain a first mixture; and then adding the first mixture to the first mixture.
  • a diluent, a defoaming agent, a leveling agent, a dispersant, a pigment and a filler are added and mixed for a second time to obtain a second mixture; the second mixture is ground uniformly to obtain an ink for an LED display screen.
  • step-by-step mixing to prepare ink for LED display screen can make the components in the ink more uniformly dispersed.
  • the preparation method of the ink for LED display screen provided by the present application is simple, and can be produced on a large scale.
  • the present application also provides an LED display screen 100, the LED display screen 100 includes a PCB board 10 and a plurality of LED lamp beads 20 disposed on the PCB board 10, and the plurality of LED lamp beads 20 are spaced apart
  • the ink layer 30 is provided on the side surface of the PCB board 10 where the lamp beads 20 are arranged.
  • the ink layer 30 covers the gaps between the plurality of LED lamp beads 20 and the edge of the PCB board. Formed by spray.
  • the plurality of LED lamp beads 20 may be arranged on the PCB board 10 in an array as shown in FIG. 2 , or may be arranged in other manners as required.
  • spraying the ink for the LED display screen onto the surface of the PCB board may specifically be: spraying the ink for the LED display screen on the surface of the PCB board by using an inkjet machine with a pneumatically driven or piezoelectrically driven inkjet valve. After spraying, the curing operation can be carried out.
  • the curing temperature can be 80°C-130°C, and the curing time can be 20min-60min.
  • the curing temperature can be, but is not limited to, 80°C, 85°C, 90°C, 95°C, 98°C, 100°C, 105°C, 110°C, 115°C, 120°C, and 130°C
  • the curing time can be, but is not limited to, 20min, 30min, 35min, 40min, 45min, 50min, 60min.
  • the thickness of the ink layer 30 is 0.1 mm-1 mm. Specifically, it may be, but not limited to, 0.1 mm, 0.3 mm, 0.5 mm, 0.6 mm, 0.8 mm, and 1 mm.
  • the arrangement of the ink layer 30 eliminates the color difference of the PCB board and improves the anti-collision capability of the LED lamp beads, and simultaneously solves the problem of the color difference of the PCB board and the problem of the LED lamp beads falling off.
  • the setting of the ink layer 30 makes the thrust of the LED lamp beads reach 3.0kg-6.0kg. Specifically, for example, 3.0 kg, 3.5 kg, 4.0 kg, 5 kg, and 6 kg.
  • An ink for an LED display screen and a preparation method thereof is composed of raw materials in the mass ratio shown in Table 1.
  • Acrylic 55% Bisphenol A epoxy resin: 15% Dicyandiamide: 4% Rubber type epoxy resin (toughening agent): 5% Cyclohexane-1,2-dicarboxylate diglycidyl ester: 10% Polyether modified silicone defoamer: 1% Polyether modified silicone leveling agent: 1% Polyester dispersant: 1%
  • the preparation method of ink for LED display screen is as follows:
  • a preparation method of an LED display ink layer :
  • the above-mentioned LED display ink was sprayed on the gap between the LED display lamp beads and the edge of the PCB board using an inkjet machine with a piezoelectrically driven inkjet valve, and the ink was cured at a temperature of 95 ° C for 50 minutes, and the LED display ink was obtained after curing. layer, the thickness of the ink layer is 0.2mm.
  • An ink for an LED display screen and a preparation method thereof is composed of raw materials in the mass ratio shown in Table 2.
  • the preparation method of ink for LED display screen is as follows:
  • a preparation method of an LED display ink layer :
  • the above-mentioned LED display ink was sprayed on the gap between the LED display lamp beads and the edge of the PCB board, and the ink was cured at a temperature of 105 ° C for 45 minutes, and the LED display ink layer was obtained after curing. , the thickness of the ink layer is 0.3mm.
  • An ink for an LED display screen and a preparation method thereof is composed of raw materials in the mass ratio shown in Table 3.
  • the preparation method of ink for LED display screen is as follows:
  • a preparation method of an LED display ink layer :
  • the above-mentioned LED display ink was sprayed on the gap between the LED display lamp beads and the edge of the PCB board, and the ink was cured at a temperature of 115 ° C for 40 minutes, and the LED display ink layer was obtained after curing. , the thickness of the ink layer is 0.4mm.
  • An ink for an LED display screen and a preparation method thereof is composed of raw materials with the mass ratio shown in Table 4.
  • Acrylic 55% Bisphenol F type epoxy resin: 15% Boron trifluoride pyridine: 3% Dimer acid type epoxy resin (toughening agent): 6% Tolyl glycidyl ether: 10% Polyether modified silicone defoamer: 1% Fluorocarbon leveling agent: 1.5% Polyester dispersant: 1% Nano calcium carbonate: 6% Carbon Black Pigment: 1.5%
  • the preparation method of ink for LED display screen is as follows:
  • a preparation method of an LED display ink layer :
  • the above-mentioned LED display ink was sprayed on the gap between the LED display lamp beads and the edge of the PCB board using an inkjet machine driven by a piezoelectric inkjet valve, and the ink was cured at a temperature of 130 ° C for 30 minutes, and the LED display ink was obtained after curing. layer, the thickness of the ink layer is 0.35mm.
  • Table 5 The performance parameter table of the ink for LED display screen and the ink layer obtained in Example 1-4

Abstract

An ink for an LED display screen and an LED display screen, the ink comprising various raw materials having the following mass percentages: an acrylic resin: 50%-60%; an epoxy resin: 10%-20%; a curing agent: 2%-5%; a pigment: 1%-3%; a filler: 5%-10%; and an auxiliary agent: 16%- 31%. The LED display screen comprises an ink layer formed from the ink.

Description

LED显示屏用油墨和LED显示屏LED display ink and LED display 技术领域technical field
本申请涉及LED显示屏技术领域，具体涉及一种LED显示屏用油墨和LED显示屏。The present application relates to the technical field of LED display screens, in particular to an ink for LED display screens and an LED display screen.
背景技术Background technique
LED(Light Emitting Diode)显示屏具有高亮度发光、色彩鲜艳、发光效率高、对比度高、响应时间短、工作温度范围广、能耗低等特点，广泛应用于舞台显示设备、广告显示设备、数据可视化显示设备以及商业显示设备。LED显示屏是由多个PCB(Printed Circuit Board)板拼接形成，LED灯珠是通过表面贴装技术(SMT,Surface Mounted Technology)焊接在PCB板上。由于不同的PCB板墨色不一致，拼接后会导致显示屏具有色差，影响LED显示屏的显示效果；同时，由于焊接面积小，LED灯珠与PCB板的结合力弱，防撞击能力差，在LED显示屏运输和使用等过程中，很容易发生LED灯珠脱落的情况。因此有必要寻找一种能有效解决上述LED显示屏色差、提升LED灯珠的防撞击能力的方法。LED (Light Emitting Diode) display has the characteristics of high brightness, bright colors, high luminous efficiency, high contrast, short response time, wide operating temperature range, low energy consumption, etc. It is widely used in stage display equipment, advertising display equipment, data Visual display equipment as well as commercial display equipment. The LED display is formed by splicing multiple PCB (Printed Circuit Board) boards, and the LED lamp beads are welded on the PCB board by surface mount technology (SMT, Surface Mounted Technology). Due to the inconsistent ink color of different PCB boards, the display will have color difference after splicing, which will affect the display effect of the LED display; at the same time, due to the small welding area, the bonding force between the LED lamp beads and the PCB board is weak, and the impact resistance is poor. During the transportation and use of the display screen, it is easy for the LED lamp beads to fall off. Therefore, it is necessary to find a method that can effectively solve the above-mentioned chromatic aberration of the LED display screen and improve the anti-collision ability of the LED lamp beads.
发明内容SUMMARY OF THE INVENTION
为解决上述问题，本申请提供了一种LED显示屏用油墨，其遮盖力强，能有效消除LED显示屏色差，并且该油墨对LED显示屏的PCB板和LED灯珠都具有良好粘接性能，可以有效加固LED灯珠，提升LED灯珠的防撞击能力。In order to solve the above problems, the present application provides an ink for an LED display screen, which has strong covering power, can effectively eliminate the color difference of the LED display screen, and has good adhesion performance to both the PCB board and the LED lamp beads of the LED display screen. , which can effectively strengthen the LED lamp beads and improve the anti-collision ability of the LED lamp beads.
本申请第一方面提供了一种LED显示屏用油墨，所述LED显示屏用油墨包括以下质量百分含量的各原料：A first aspect of the present application provides an ink for an LED display screen, and the ink for an LED display screen includes each raw material in the following mass percentages:
丙烯酸树脂：50％-60％；Acrylic resin: 50%-60%;
环氧树脂：10％-20％；Epoxy resin: 10%-20%;
固化剂：2％-5％；Curing agent: 2%-5%;
颜料：1％-3％；Pigment: 1%-3%;
填料：5％-10％；Filler: 5%-10%;
助剂：16％-31％。Auxiliary: 16%-31%.
本申请中的LED显示屏用油墨通过丙烯酸树脂和环氧树脂的组合，经过固化剂交联后所形成的油墨层具有良好的韧性和抗冲击性，并且油墨对LED显示屏的PCB板和LED灯珠都具有良好的粘接性能；填料具有较高硬度，能够提升油墨所形成的油墨层的力学性能；颜料能够消除PCB板的色差；通过以上组合可有效解决LED显示屏色差和LED灯珠防撞击能力差的问题。The ink for LED display in this application is cross-linked by a curing agent through the combination of acrylic resin and epoxy resin. The lamp beads have good adhesion performance; the filler has high hardness, which can improve the mechanical properties of the ink layer formed by the ink; the pigment can eliminate the color difference of the PCB board; the above combination can effectively solve the color difference of the LED display and LED lamp beads. The problem of poor impact resistance.
可选的，所述颜料包括炭黑；所述颜料的平均粒径为1nm-100nm。炭黑具有良好的稳定性和着色力，在1nm-100nm的粒径范围中，颜料具有较好的分散性，能够保证油墨均匀并且在喷涂过程不会堵塞喷墨机。Optionally, the pigment includes carbon black; the average particle size of the pigment is 1 nm-100 nm. Carbon black has good stability and tinting strength. In the particle size range of 1nm-100nm, the pigment has good dispersibility, which can ensure that the ink is uniform and will not block the inkjet machine during the spraying process.
可选的，所述填料包括二氧化钛、二氧化硅、硫酸钙、碳酸钙、氧化铝和氮化铝中的一种或多种；所述填料的粒径为1nm-500nm。填料可以增强油墨所形成的油墨层的硬度，改善油墨层的力学性能。上述粒径范围能保证油墨的耐冲击性以及填料在油墨中的均匀分散。Optionally, the filler includes one or more of titanium dioxide, silicon dioxide, calcium sulfate, calcium carbonate, aluminum oxide and aluminum nitride; the particle size of the filler is 1 nm-500 nm. The filler can enhance the hardness of the ink layer formed by the ink and improve the mechanical properties of the ink layer. The above particle size range can ensure the impact resistance of the ink and the uniform dispersion of the filler in the ink.
可选的，所述丙烯酸树脂在25℃下的粘度为300mPa·s-3000mPa·s，所述环氧树脂在25℃下的粘度为1000mPa·s-3000mPa·s。丙烯酸树脂和环氧树脂作为油墨的基体树脂，其粘度与油墨的粘度直接相关，在以上范围的粘度下，能保证油墨具有良好的喷涂性能。Optionally, the viscosity of the acrylic resin at 25°C is 300mPa·s-3000mPa·s, and the viscosity of the epoxy resin at 25°C is 1000mPa·s-3000mPa·s. Acrylic resin and epoxy resin are used as the matrix resin of the ink, and their viscosity is directly related to the viscosity of the ink. Under the viscosity of the above range, the ink can ensure that the ink has good spraying performance.
可选的，固化剂包括改性胺类固化剂、双氰胺类固化剂和咪唑类固化剂中的一种或多种。进一步地，固化剂为潜伏型固化剂。潜伏型固化剂在室温下具有一定的贮存稳定性，在加热升温后固化剂能够迅速释放出反应活性使树脂固 化，有利于控制反应进程，保证油墨的稳定性。Optionally, the curing agent includes one or more of modified amine curing agents, dicyandiamide curing agents and imidazole curing agents. Further, the curing agent is a latent curing agent. The latent curing agent has a certain storage stability at room temperature. After heating and heating, the curing agent can quickly release the reactive activity to cure the resin, which is beneficial to control the reaction process and ensure the stability of the ink.
可选的，助剂包括增韧剂、稀释剂、消泡剂、流平剂和分散剂中的一种或多种。添加增韧剂可以增强油墨所形成的油墨层的韧性，提高弹性模量，降低热膨胀系数，使油墨层具有高抗冲击性及良好耐热性；加入稀释剂可以降低油墨的粘度、提高流动性；使用消泡剂可以有效降低油墨在制备和使用过程中产生气泡的概率，提高油墨的均一性；加入流平剂能够降低油墨表面张力，促使油墨在固化过程中形成平整、光滑、均匀的表面。添加分散剂可促进颜料、填料在油墨中均一分散，防止颗粒团聚。Optionally, the adjuvant includes one or more of a toughening agent, a diluent, an antifoaming agent, a leveling agent and a dispersing agent. Adding a toughener can enhance the toughness of the ink layer formed by the ink, improve the elastic modulus, reduce the thermal expansion coefficient, and make the ink layer have high impact resistance and good heat resistance; adding a diluent can reduce the viscosity of the ink and improve the fluidity. ; The use of defoamer can effectively reduce the probability of bubbles generated during the preparation and use of the ink, and improve the uniformity of the ink; the addition of a leveling agent can reduce the surface tension of the ink and promote the ink to form a smooth, smooth and uniform surface during the curing process. . Adding dispersant can promote the uniform dispersion of pigments and fillers in the ink and prevent particle agglomeration.
可选地，本申请一实施方式中，所述LED显示屏用油墨包括以下质量百分含量的各原料：Optionally, in an embodiment of the present application, the ink for the LED display screen includes each raw material in the following mass percentages:
丙烯酸树脂：50％-60％；Acrylic resin: 50%-60%;
环氧树脂：10％-20％；Epoxy resin: 10%-20%;
固化剂：2％-5％；Curing agent: 2%-5%;
颜料：1％-3％；Pigment: 1%-3%;
填料：5％-10％；Filler: 5%-10%;
增韧剂：5％-10％；Toughening agent: 5%-10%;
稀释剂：10％-15％；Thinner: 10%-15%;
消泡剂：0.5％-2％；Defoamer: 0.5%-2%;
流平剂：0.5％-2％；Leveling agent: 0.5%-2%;
分散剂：0.5％-2％。Dispersant: 0.5%-2%.
添加以上含量的助剂能够保证颜料在油墨中均匀分散，并且维持油墨的流动性，有利于形成均一的油墨层。Adding the above content of additives can ensure the uniform dispersion of the pigment in the ink, and maintain the fluidity of the ink, which is conducive to the formation of a uniform ink layer.
可选的，所述LED显示屏用油墨颗粒粒径为1μm-10μm。油墨颗粒粒径为1μm-10μm时油墨的着色力和遮盖效果好，能有效消除LED显示屏的PCB板的 色差，并且不会堵塞喷墨器，保证喷墨过程顺畅。Optionally, the particle size of the ink particles for the LED display screen is 1 μm-10 μm. When the particle size of the ink particles is 1μm-10μm, the tinting strength and covering effect of the ink are good, which can effectively eliminate the color difference of the PCB board of the LED display screen, and will not block the inkjet device, ensuring a smooth inkjet process.
可选的，所述LED显示屏用油墨在25℃下的粘度为300mPa·s-1500mPa·s。在上述粘度范围中，油墨具有较好的流动性，使喷墨机能够顺利将油墨喷涂在LED灯珠的间隙，均匀覆盖在PCB板表面，并且油墨具有较好的内聚力，不会造成飞墨。Optionally, the viscosity of the ink for LED display at 25° C. is 300 mPa·s-1500 mPa·s. In the above viscosity range, the ink has good fluidity, so that the inkjet machine can smoothly spray the ink on the gap between the LED lamp beads and evenly cover the surface of the PCB board, and the ink has good cohesion, which will not cause flying ink. .
可选的，所述LED显示屏用油墨在45#钢上测试拉伸剪切强度为8MPa·s-40MPa·s。拉伸剪切强度大于或等于8MPa·s时，油墨能有效加固LED灯珠，提高灯珠的防撞能力。Optionally, the tensile shear strength of the ink for the LED display screen tested on 45# steel is 8MPa·s-40MPa·s. When the tensile shear strength is greater than or equal to 8MPa·s, the ink can effectively strengthen the LED lamp beads and improve the anti-collision ability of the lamp beads.
本申请第一方面提供的LED显示屏用油墨，具有良好的遮盖力，可以有效消除LED显示屏的PCB板的色差，并且油墨对PCB板和LED灯珠具有良好粘接性能，喷涂后不易脱落；该油墨固化后所形成的油墨层具有良好的韧性和耐冲击性，将油墨喷涂在LED灯珠间隙能够加固LED灯珠，提高LED灯珠的防撞性能；该油墨流动性好，颗粒小，不易堵塞喷墨机的喷嘴，并且分散均匀，稳定性良好；该油墨所用的原料易得，制备成本低；采用本申请提供的LED显示屏用油墨可以同时解决LED显示屏色差和LED灯珠防撞能力差的问题。The ink for the LED display screen provided in the first aspect of the application has good covering power, can effectively eliminate the color difference of the PCB board of the LED display screen, and the ink has good adhesion performance to the PCB board and the LED lamp beads, and is not easy to fall off after spraying ; The ink layer formed after curing of the ink has good toughness and impact resistance. Spraying the ink on the gap between the LED lamp beads can strengthen the LED lamp beads and improve the anti-collision performance of the LED lamp beads; the ink has good fluidity and small particles. , it is not easy to block the nozzle of the inkjet machine, and the dispersion is uniform and the stability is good; the raw materials used in the ink are easy to obtain, and the preparation cost is low; the use of the LED display ink provided by the application can solve the color difference of the LED display screen and the LED lamp beads at the same time. The problem of poor collision avoidance.
本申请第二方面提供了一种LED显示屏，包括本申请第一方面所述的LED显示屏用油墨形成的油墨层。A second aspect of the present application provides an LED display screen, comprising an ink layer formed from the ink for an LED display screen described in the first aspect of the present application.
可选的，所述LED显示屏用油墨形成的油墨层厚度为0.1mm-1mm。通过在LED显示屏表面设置上述厚度的油墨层，能够完全消除PCB板的色差并且油墨层能有效加固LED灯珠，提升灯珠的防撞效果。Optionally, the thickness of the ink layer formed by the ink for the LED display screen is 0.1 mm-1 mm. By setting the ink layer of the above thickness on the surface of the LED display screen, the color difference of the PCB board can be completely eliminated, and the ink layer can effectively strengthen the LED lamp beads and improve the anti-collision effect of the lamp beads.
本申请提供的LED显示屏用油墨，固化后所形成的油墨层具有较强的韧性和耐冲击性能，应用在LED显示屏中能显著提高LED灯珠的防撞性能，增加LED显示屏的牢固性，延长LED显示屏的使用寿命；并且油墨层能有效消除LED显示屏的PCB板的色差，可以提高LED显示屏的墨色一致性。采用本申请 提供的LED显示屏可以不用再额外设置防撞胶，降低了LED显示屏的生产成本，提高了生产效率。The ink for LED display screen provided by this application, the ink layer formed after curing has strong toughness and impact resistance, and the application in LED display screen can significantly improve the anti-collision performance of LED lamp beads and increase the firmness of LED display screen. In addition, the ink layer can effectively eliminate the color difference of the PCB board of the LED display, and can improve the ink color consistency of the LED display. By using the LED display screen provided by the present application, it is not necessary to additionally set up anti-collision glue, which reduces the production cost of the LED display screen and improves the production efficiency.
附图说明Description of drawings
图1为本申请实施例的LED显示屏的结构示意图(主视图)；1 is a schematic structural diagram (front view) of an LED display screen according to an embodiment of the application;
图2为本申请实施例的LED显示屏的结构示意图(俯视图)。FIG. 2 is a schematic structural diagram (top view) of an LED display screen according to an embodiment of the present application.
具体实施方式Detailed ways
以下所述是本申请的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本申请原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也视为本申请的保护范围。The following description is the preferred embodiment of the present application. It should be pointed out that for those skilled in the art, without departing from the principles of the present application, several improvements and modifications can be made, and these improvements and modifications may also be regarded as The protection scope of this application.
本申请提供了一种LED显示屏用油墨，LED显示屏用油墨包括以下质量百分含量的各原料：The application provides an ink for an LED display screen, and the ink for an LED display screen includes the following raw materials in mass percentages:
丙烯酸树脂：50％-60％；Acrylic resin: 50%-60%;
环氧树脂：10％-20％；Epoxy resin: 10%-20%;
固化剂：2％-5％；Curing agent: 2%-5%;
颜料：1％-3％；Pigment: 1%-3%;
填料：5％-10％；Filler: 5%-10%;
助剂：16％-31％。Auxiliary: 16%-31%.
本申请实施方式中，丙烯酸树脂包括由丙烯酸甲酯、丙烯酸乙酯、甲基丙烯酸甲酯、甲基丙烯酸乙酯、甲基丙烯酸丙酯、丙烯酸正丁酯和甲基丙烯酸正丁酯中的一种或多种丙烯酸酯单体聚合形成的丙烯酸树脂。适当含量的丙烯酸树脂能够保证油墨的耐久性，提高油墨的粘接力，并且降低油墨的成本。本申请实施方式中，丙烯酸树脂占LED显示屏用油墨的质量百分含量为50％-60％，具体可以但不限于为50％、51％、53％、54.5％、55％、57％、60％。本申请一 些实施方式中，丙烯酸树脂固体含量为30％-80％。具体可以但不限于为30％、40％、50％、60％、70％、80％。选择适当固含量的丙烯酸树脂可保证油墨体系中丙烯酸树脂的含量充足，同时有利于与其他组分充分混合反应，进而得到性能好、组分均一的油墨。In the embodiment of the present application, the acrylic resin comprises one of methyl acrylate, ethyl acrylate, methyl methacrylate, ethyl methacrylate, propyl methacrylate, n-butyl acrylate and n-butyl methacrylate An acrylic resin formed by the polymerization of one or more acrylate monomers. Appropriate content of acrylic resin can ensure the durability of the ink, improve the adhesion of the ink, and reduce the cost of the ink. In the embodiment of the present application, the mass percentage content of acrylic resin in the ink for LED display screen is 50%-60%, specifically, but not limited to 50%, 51%, 53%, 54.5%, 55%, 57%, 60%. In some embodiments of the present application, the solid content of the acrylic resin is 30%-80%. Specifically, it may be, but not limited to, 30%, 40%, 50%, 60%, 70%, and 80%. Selecting the acrylic resin with appropriate solid content can ensure that the content of acrylic resin in the ink system is sufficient, and at the same time, it is conducive to fully mixing and reacting with other components, thereby obtaining an ink with good performance and uniform components.
本申请中，丙烯酸树脂的粘度对油墨的流动性有很大影响。本申请实施方式中，丙烯酸树脂在25℃下的粘度为300mPa·s-3000mPa·s。丙烯酸树脂在25℃下的粘度具体可以但不限于为300mPa·s、400mPa·s、500mPa·s、600mPa·s、700mPa·s、900mPa·s、1100mPa·s、1600mPa·s、2000mPa·s、2500mPa·s、3000mPa·s。In this application, the viscosity of the acrylic resin has a great influence on the fluidity of the ink. In the embodiment of the present application, the viscosity of the acrylic resin at 25° C. is 300 mPa·s to 3000 mPa·s. The viscosity of the acrylic resin at 25°C can specifically be, but not limited to, 300mPa·s, 400mPa·s, 500mPa·s, 600mPa·s, 700mPa·s, 900mPa·s, 1100mPa·s, 1600mPa·s, 2000mPa·s, 2500mPa·s, 3000mPa·s.
本申请中，环氧树脂起到增强油墨对LED显示屏PCB板和LED灯珠的粘接性能、提高油墨层稳定性的作用。本申请实施方式中，环氧树脂包括双酚A型环氧树脂、双酚F型环氧树脂、脂肪族环氧树脂、多环芳香族环氧树脂和酚醛型环氧树脂中的一种或多种。本申请实施方式中，环氧树脂的环氧当量为150g/eq-200g/eq。本申请实施方式中，环氧树脂占LED显示屏用油墨的质量百分含量为10％-20％。具体可以但不限于为10％、13％、14％、15％、17％、20％。通过加入适当含量的环氧树脂能够提升油墨的粘结力和耐热性能。本申请实施方式中，环氧树脂在25℃下的粘度为1000mPa·s-3000mPa·s，例如为1000mPa·s、1300mPa·s、1500mPa·s、2000mPa·s、2500mPa·s、3000mPa·s。In this application, the epoxy resin plays the role of enhancing the adhesion of the ink to the LED display PCB board and the LED lamp beads, and improving the stability of the ink layer. In the embodiment of the present application, the epoxy resin includes one or more of bisphenol A epoxy resin, bisphenol F epoxy resin, aliphatic epoxy resin, polycyclic aromatic epoxy resin and novolac epoxy resin. variety. In the embodiment of the present application, the epoxy equivalent of the epoxy resin is 150 g/eq-200 g/eq. In the embodiment of the present application, the epoxy resin accounts for 10%-20% by mass of the ink for the LED display screen. Specifically, but not limited to, 10%, 13%, 14%, 15%, 17%, 20%. The adhesion and heat resistance of the ink can be improved by adding appropriate content of epoxy resin. In the embodiment of the present application, the viscosity of the epoxy resin at 25° C. is 1000 mPa·s-3000 mPa·s, for example, 1000 mPa·s, 1300 mPa·s, 1500 mPa·s, 2000 mPa·s, 2500 mPa·s, and 3000 mPa·s.
本申请中，固化剂可以与环氧树脂和丙烯酸树脂交联形成三维网状结构。本申请实施方式中，固化剂为潜伏型固化剂，包括改性胺类固化剂、双氰胺类固化剂和咪唑类固化剂中的一种或多种。其中，改性胺类固化剂可以包括三氟化硼单乙胺、三氟化硼苯胺、三氟化硼苄胺和三氟化硼吡啶中的一种或多种。咪唑类固化剂可以包括咪唑、2-甲基咪唑、2-乙基咪唑、2、4-二甲基咪唑和2-乙基4-甲基咪唑中的一种或多种。双氰胺类固化剂可以包括双氰胺、苯胺改性双氰胺中的一种或多种。潜伏型固化剂在室温下具有贮存稳定性，加热升温 后则能够释放出反应活性，从而达到使油墨迅速固化的目的。本申请实施方式中，固化剂占LED显示屏用油墨的质量百分含量为2％-5％。具体可以但不限于为2％、2.5％、3％、4％、4.5％、5％。In this application, the curing agent can be cross-linked with epoxy resin and acrylic resin to form a three-dimensional network structure. In the embodiments of the present application, the curing agent is a latent curing agent, including one or more of a modified amine curing agent, a dicyandiamide curing agent, and an imidazole curing agent. The modified amine curing agent may include one or more of boron trifluoride monoethylamine, boron trifluoride aniline, boron trifluoride benzylamine and boron trifluoride pyridine. The imidazole-based curing agent may include one or more of imidazole, 2-methylimidazole, 2-ethylimidazole, 2, 4-dimethylimidazole, and 2-ethyl 4-methylimidazole. The dicyandiamide curing agent may include one or more of dicyandiamide and aniline-modified dicyandiamide. Latent curing agent has storage stability at room temperature, and can release reactive activity after heating, so as to achieve the purpose of rapid curing of ink. In the embodiment of the present application, the mass percentage content of the curing agent in the ink for the LED display screen is 2%-5%. Specifically, it can be, but not limited to, 2%, 2.5%, 3%, 4%, 4.5%, and 5%.
LED显示屏在使用过程中会产生大量热量，使用较高熔点和玻璃化转变温度的固化剂能够保证油墨层在较高温度下不易发生软化、脱落，从而延长LED显示屏的使用寿命。本申请实施方式中，固化剂的熔点和玻璃化转变温度在70℃以上。进一步地，固化剂的熔点为80℃-170℃，玻璃化转变温度为80℃-140℃。本申请实施方式中，固化剂在40℃下的安定性为3周-4周。较长的安定性可以保证油墨在喷涂过程中具有稳定的流动性，进而形成均一的油墨层。本申请一些实施方式中，固化剂的平均粒径(D50)为1μm-10μm，具体地，平均粒径可以但不限于为1μm、2μm、5μm、7μm、9μm、10μm。适当粒径的固化剂能够保证油墨不堵塞喷嘴，使油墨顺利喷出。The LED display will generate a lot of heat during use. The use of a curing agent with a higher melting point and glass transition temperature can ensure that the ink layer is not easy to soften and fall off at a higher temperature, thereby extending the service life of the LED display. In the embodiment of the present application, the melting point and glass transition temperature of the curing agent are above 70°C. Further, the melting point of the curing agent is 80°C-170°C, and the glass transition temperature is 80°C-140°C. In the embodiment of the present application, the stability of the curing agent at 40° C. is 3 weeks to 4 weeks. Longer stability can ensure that the ink has stable fluidity during the spraying process, thereby forming a uniform ink layer. In some embodiments of the present application, the average particle size (D50) of the curing agent is 1 μm-10 μm, specifically, the average particle size may be, but not limited to, 1 μm, 2 μm, 5 μm, 7 μm, 9 μm, and 10 μm. Appropriate particle size curing agent can ensure that the ink does not block the nozzle, so that the ink can be ejected smoothly.
本申请中，颜料用来消除LED显示屏的PCB板的色差。本申请实施方式中，颜料为炭黑颜料。本申请实施方式中，颜料占LED显示屏用油墨的质量百分含量为1％-3％，具体可以但不限于为1％、1.2％、1.5％、1.8％、2％、2.2％、2.5％、2.7％、3％。本申请实施方式中，颜料的平均原生粒径为1nm-100nm，具体可以但不限于为1nm、10nm、15nm、20nm、30nm、35nm、40nm、50nm、60nm、70nm、100nm。适当粒径范围的颜料具有良好的着色力和遮盖效果，能有效消除LED显示屏的PCB板的色差，并且不会堵塞喷嘴，使油墨顺利喷出。本申请实施方式中，颜料还可以通过表面活性剂进行表面处理，以避免颜料团聚。其中，改性后的颜料的粒径也在1nm-100nm的范围内。In this application, the pigment is used to eliminate the color difference of the PCB board of the LED display screen. In the embodiment of the present application, the pigment is a carbon black pigment. In the embodiment of the present application, the mass percentage content of the pigment in the ink for the LED display screen is 1%-3%, specifically, but not limited to, 1%, 1.2%, 1.5%, 1.8%, 2%, 2.2%, 2.5% %, 2.7%, 3%. In the embodiments of the present application, the average primary particle size of the pigment is 1 nm-100 nm, specifically, but not limited to, 1 nm, 10 nm, 15 nm, 20 nm, 30 nm, 35 nm, 40 nm, 50 nm, 60 nm, 70 nm, and 100 nm. Pigments with an appropriate particle size range have good tinting strength and covering effect, which can effectively eliminate the color difference of the PCB board of the LED display screen, and will not block the nozzle, so that the ink can be ejected smoothly. In the embodiment of the present application, the pigment may also be surface-treated with a surfactant to avoid agglomeration of the pigment. Wherein, the particle size of the modified pigment is also in the range of 1 nm-100 nm.
本申请中，颜料的DBP吸油值会影响颜料在油墨中的分散性。本申请实施方式中，颜料的DBP吸油值为10cc/100g-250cc/100g。具体地，DBP吸油值可以但不限于为10cc/100g、40cc/100g、50cc/100g、65cc/100g、85cc/100g、 125cc/100g、175cc/100g或185cc/100g、200cc/100g、250cc/100g。In this application, the DBP oil absorption value of the pigment affects the dispersibility of the pigment in the ink. In the embodiment of the present application, the DBP oil absorption value of the pigment is 10cc/100g-250cc/100g. Specifically, the DBP oil absorption value may be, but not limited to, 10cc/100g, 40cc/100g, 50cc/100g, 65cc/100g, 85cc/100g, 125cc/100g, 175cc/100g or 185cc/100g, 200cc/100g, 250cc/100g .
本申请中，添加填料可以改善油墨层的力学性能，增加油墨层强度，提高油墨层的防撞击能力。本申请实施方式中，填料包括二氧化钛、二氧化硅、硫酸钙、碳酸钙、氧化铝、氮化铝中的一种或多种。本申请实施方式中，填料占LED显示屏用油墨的质量百分含量为5％-10％。具体可以但不限于为5％、6％、6.5％、7％、7.5％、8％、9％、10％。本申请实施方式中，填料为球形或类球形颗粒。球体形态的填料能够有效分散撞击过程中油墨层的应力，从而提高油墨层的稳固性，保证LED灯不被撞落。本申请实施方式中，填料的粒径为1nm-500nm。进一步地，填料的粒径为1nm-100nm。上述粒径范围内的填料能够均匀分散在油墨中，并且不会堵塞油墨喷嘴，保证了油墨的均匀喷涂。本申请实施方式中，填料还可以通过表面活性剂(如十二烷基苯磺酸钠、月桂酸钠等)和/或偶联剂进行表面改性，以避免填料团聚。其中，改性后的填料的粒径也在1nm-500nm的范围内。In this application, adding fillers can improve the mechanical properties of the ink layer, increase the strength of the ink layer, and improve the impact resistance of the ink layer. In the embodiment of the present application, the filler includes one or more of titanium dioxide, silicon dioxide, calcium sulfate, calcium carbonate, aluminum oxide, and aluminum nitride. In the embodiment of the present application, the mass percentage content of the filler in the ink for the LED display screen is 5%-10%. Specifically, it can be, but not limited to, 5%, 6%, 6.5%, 7%, 7.5%, 8%, 9%, and 10%. In the embodiment of the present application, the filler is spherical or quasi-spherical particles. The spherical filler can effectively disperse the stress of the ink layer during the impact process, thereby improving the stability of the ink layer and ensuring that the LED lamp is not knocked off. In the embodiment of the present application, the particle size of the filler is 1 nm-500 nm. Further, the particle size of the filler is 1 nm-100 nm. The filler within the above particle size range can be uniformly dispersed in the ink, and will not block the ink nozzle, ensuring the uniform spraying of the ink. In the embodiment of the present application, the filler may also be surface-modified by a surfactant (eg, sodium dodecylbenzenesulfonate, sodium laurate, etc.) and/or a coupling agent, so as to avoid agglomeration of the filler. Wherein, the particle size of the modified filler is also in the range of 1 nm-500 nm.
本申请实施方式中，助剂包括增韧剂、稀释剂、消泡剂、流平剂和分散剂中的一种或多种。In the embodiment of the present application, the adjuvant includes one or more of a toughening agent, a diluent, a defoaming agent, a leveling agent and a dispersing agent.
本申请中，添加增韧剂可以提高油墨层的韧性，增加弹性模量，并降低热膨胀系数，使油墨层具有高抗冲击性及良好耐热性。本申请实施方式中，增韧剂包括聚氨酯型环氧树脂、二聚酸型环氧树脂和橡胶型环氧树脂中的一种或多种。本申请实施方式中，增韧剂占LED显示屏用油墨的质量百分含量为5％-10％。具体可以但不限于为5％、6％、6.5％、7％、7.5％、8％、9％、10％。适当粘度的增韧剂能够调节油墨的流动性，得到组分均一的油墨。本申请实施方式中，增韧剂在25℃下的粘度为300mPa·s-2000mPa·s，具体可以但不限于为300mPa·s、500mPa·s、600mPa·s、700mPa·s、800mPa·s、1000mPa·s、1500mPa·s、2000mPa·s。In this application, adding a toughening agent can improve the toughness of the ink layer, increase the elastic modulus, and reduce the thermal expansion coefficient, so that the ink layer has high impact resistance and good heat resistance. In the embodiments of the present application, the toughening agent includes one or more of polyurethane type epoxy resin, dimer acid type epoxy resin and rubber type epoxy resin. In the embodiment of the present application, the toughening agent accounts for 5%-10% by mass of the ink for the LED display screen. Specifically, it can be, but not limited to, 5%, 6%, 6.5%, 7%, 7.5%, 8%, 9%, and 10%. Toughening agent with appropriate viscosity can adjust the fluidity of ink and obtain ink with uniform composition. In the embodiment of the present application, the viscosity of the toughening agent at 25°C is 300mPa·s-2000mPa·s, specifically, but not limited to, 300mPa·s, 500mPa·s, 600mPa·s, 700mPa·s, 800mPa·s, 1000mPa·s, 1500mPa·s, 2000mPa·s.
本申请中，添加稀释剂可以降低油墨的粘度、提高油墨流动性，有利于油墨的喷涂。本申请实施方式中，稀释剂包括环己烷-1,2-二羧酸二缩水甘油酯、四氢邻苯二甲酸双缩水甘油酯、甲苯基缩水甘油醚、邻甲苯基缩水甘油醚、新戊二醇二缩水甘油醚、已二醇二缩水甘油醚、聚丙二醇二缩水甘油醚和乙二醇二缩水甘油醚中的一种或者多种。本申请实施方式中，稀释剂占LED显示屏用油墨的质量百分含量为10％-15％。具体可以但不限于为10％、11％、12％、13％、14％、15％。添加上述质量百分含量的稀释剂能够保证油墨具有较好的流动性，有利于油墨的喷涂。本申请实施方式中，稀释剂在25℃下的粘度为1mPa·s-500mPa·s。进一步地，稀释剂在25℃下的粘度为5mPa·s-100mPa·s。使用上述粘度范围内的稀释剂能够有效降低树脂粘度，增加油墨的流动性。In the present application, adding a diluent can reduce the viscosity of the ink and improve the fluidity of the ink, which is beneficial to the spraying of the ink. In the embodiment of the present application, the diluent includes cyclohexane-1,2-dicarboxylate diglycidyl ester, tetrahydrophthalic acid diglycidyl ester, tolyl glycidyl ether, o-tolyl glycidyl ether, new One or more of pentanediol diglycidyl ether, hexanediol diglycidyl ether, polypropylene glycol diglycidyl ether and ethylene glycol diglycidyl ether. In the embodiment of the present application, the diluent accounts for 10%-15% by mass of the ink for the LED display screen. Specifically, it can be, but not limited to, 10%, 11%, 12%, 13%, 14%, and 15%. The addition of the above-mentioned diluent by mass percentage can ensure that the ink has good fluidity, which is beneficial to the spraying of the ink. In the embodiment of the present application, the viscosity of the diluent at 25° C. is 1 mPa·s-500 mPa·s. Further, the viscosity of the diluent at 25° C. is 5 mPa·s-100 mPa·s. Using the diluent in the above viscosity range can effectively reduce the viscosity of the resin and increase the fluidity of the ink.
本申请中，消泡剂能够有效降低油墨在制备和使用过程中产生气泡的概率，提高油墨层的可靠性。本申请实施方式中，消泡剂包括有机硅消泡剂和非有机硅消泡剂中的一种或多种。进一步地，消泡剂包括聚醚改性有机硅消泡剂。更进一步地，消泡剂可以包括聚醚改性聚硅氧烷。以上消泡剂的抑泡能力强并且无毒、分散性好，可以有效降低油墨在制备和使用过程中产生气泡的概率，提高油墨层的可靠性。本申请实施方式中，消泡剂占LED显示屏用油墨的质量百分含量为0.5％-2％。具体可以但不限于为0.5％、0.7％、0.8％、1％、1.2％、1.4％、1.5％、1.8％、2％。本申请实施方式中，消泡剂的粘度为10cs-2000cs。进一步地，消泡剂的粘度为50cs-1000cs。In the present application, the defoaming agent can effectively reduce the probability of generating air bubbles during the preparation and use of the ink, and improve the reliability of the ink layer. In the embodiments of the present application, the defoaming agent includes one or more of a silicone defoaming agent and a non-silicone defoaming agent. Further, the defoaming agent includes a polyether-modified silicone defoaming agent. Still further, the defoaming agent may include polyether-modified polysiloxane. The above defoamer has strong antifoaming ability, non-toxicity and good dispersibility, which can effectively reduce the probability of generating bubbles during the preparation and use of the ink, and improve the reliability of the ink layer. In the embodiment of the present application, the defoaming agent accounts for 0.5%-2% by mass of the ink for the LED display screen. Specifically, it can be, but not limited to, 0.5%, 0.7%, 0.8%, 1%, 1.2%, 1.4%, 1.5%, 1.8%, 2%. In the embodiment of the present application, the viscosity of the defoaming agent is 10cs-2000cs. Further, the viscosity of the defoaming agent is 50cs-1000cs.
本申请中，加入流平剂可以降低油墨表面张力，提高其流平性，促使油墨形成平整、光滑、均匀的油墨层。本申请实施方式中，流平剂包括氟碳类流平剂、丙烯酸类流平剂和有机硅类流平剂中的一种或多种。进一步地，流平剂可以包括聚醚改性有机硅流平剂。更进一步地，流平剂可以包括聚醚改性聚二甲基硅氧烷。本申请实施方式中，流平剂占LED显示屏用油墨的质量百分含量 为0.5％-2％。具体可以但不限于为0.5％、0.7％、0.8％、1％、1.2％、1.4％、1.5％、1.8％、2％。本申请实施方式中，流平剂在25℃下的粘度为500mPa·s-1000mPa·s、密度为1.04g/cm 3-1.07g/cm 3。使用以上粘度和密度范围内的流平剂能有效降低油墨表面张力，促使油墨形成平整的油墨层。 In this application, adding a leveling agent can reduce the surface tension of the ink, improve its leveling, and promote the ink to form a flat, smooth and uniform ink layer. In the embodiments of the present application, the leveling agent includes one or more of a fluorocarbon-based leveling agent, an acrylic-based leveling agent, and a silicone-based leveling agent. Further, the leveling agent may include a polyether-modified silicone leveling agent. Still further, the leveling agent may include polyether-modified polydimethylsiloxane. In the embodiment of the present application, the leveling agent accounts for 0.5%-2% by mass of the ink for the LED display screen. Specifically, but not limited to, 0.5%, 0.7%, 0.8%, 1%, 1.2%, 1.4%, 1.5%, 1.8%, 2%. In the embodiment of the present application, the viscosity of the leveling agent at 25° C. is 500 mPa·s to 1000 mPa·s, and the density is 1.04 g/cm 3 to 1.07 g/cm 3 . Using the leveling agent in the above viscosity and density range can effectively reduce the surface tension of the ink and promote the formation of a smooth ink layer.
本申请中，添加分散剂能够保证油墨中各组分均匀分散，提升油墨的稳定性。本申请实施方式中，分散剂包括丙烯酸酯型分散剂、聚氨酯型分散剂和聚酯型分散剂中的一种或多种。进一步地，分散剂为聚酯型分散剂。更进一步地，分散剂为改性聚己内酯。以上分散剂具有锚定基团，锚定基团可与树脂缠绕吸附，并同时包覆颜料和填料颗粒，从而提高油墨的颜色稳定性和均一性。本申请实施方式中，分散剂占LED显示屏用油墨的质量百分含量为0.5％-2％。具体可以但不限于为0.5％、0.7％、0.8％、1％、1.2％、1.4％、1.5％、1.8％、2％。本申请实施方式中，分散剂在25℃下的粘度为40000mPa·s-60000mPa·s。具体可以但不限于为40000mPa·s、45000mPa·s、50000mPa·s、55000mPa·s、60000mPa·s。适当粘度的分散剂能够改善颜料和填料在树脂中的分散性。In this application, adding a dispersant can ensure the uniform dispersion of each component in the ink and improve the stability of the ink. In the embodiments of the present application, the dispersant includes one or more of acrylate-type dispersants, polyurethane-type dispersants, and polyester-type dispersants. Further, the dispersant is a polyester dispersant. Further, the dispersant is modified polycaprolactone. The above dispersants have anchoring groups, which can entangle and adsorb with the resin, and coat the pigment and filler particles at the same time, thereby improving the color stability and uniformity of the ink. In the embodiment of the present application, the mass percentage content of the dispersant in the ink for LED display screen is 0.5%-2%. Specifically, it can be, but not limited to, 0.5%, 0.7%, 0.8%, 1%, 1.2%, 1.4%, 1.5%, 1.8%, 2%. In the embodiment of the present application, the viscosity of the dispersant at 25° C. is 40,000 mPa·s to 60,000 mPa·s. Specifically, but not limited to, 40000 mPa·s, 45000 mPa·s, 50000 mPa·s, 55000 mPa·s, and 60000 mPa·s. Dispersants of appropriate viscosity can improve the dispersibility of pigments and fillers in resins.
本申请提供的LED显示屏用油墨对PCB板和LED灯珠具有良好的粘接性，油墨组分均匀，稳定性好，并且具有良好的遮盖力，可以显著消除LED显示屏的PCB板的色差；该油墨固化后所形成的油墨层具有强的韧性和耐冲击性，喷涂在LED灯珠间隙可以有效加固LED灯珠，大大提高LED灯珠的防撞性能。The LED display ink provided in this application has good adhesion to the PCB board and LED lamp beads, the ink composition is uniform, the stability is good, and it has good covering power, which can significantly eliminate the color difference of the PCB board of the LED display screen. ; The ink layer formed after curing of the ink has strong toughness and impact resistance, and spraying on the gap between the LED lamp beads can effectively strengthen the LED lamp beads and greatly improve the anti-collision performance of the LED lamp beads.
本申请实施方式中，所得LED显示屏用油墨的粘度为300mPa·s-1500mPa·s。具体可以但不限于为300mPa·s、500mPa·s、600mPa·s、750mPa·s、800mPa·s、1000mPa·s、1200mPa·s、1500mPa·s。本申请实施方式中，LED显示屏用油墨的颗粒粒径为1μm-10μm，具体可以但不限于为1μm、2μm、5μm、10μm。本申请实施方式中，LED显示屏用油墨的遮盖率OD值大 于3。进一步地，油墨的遮盖率OD值大于4。本申请实施方式中，LED显示屏用油墨可根据实际需要形成不同厚度的油墨层。例如，本申请一些实施方式中，LED显示屏用油墨可用于形成厚度为0.1mm-1mm的油墨层。具体地，可以但不限于是0.1mm、0.3mm、0.5mm、0.7mm、0.8mm、1mm。上述厚度范围内的油墨层能够完全覆盖在LED显示屏灯珠的间隙和边缘，并消除PCB板的色差。In the embodiment of the present application, the viscosity of the obtained ink for LED display screen is 300 mPa·s-1500 mPa·s. Specifically, but not limited to, 300 mPa·s, 500 mPa·s, 600 mPa·s, 750 mPa·s, 800 mPa·s, 1000 mPa·s, 1200 mPa·s, and 1500 mPa·s. In the embodiments of the present application, the particle size of the ink for the LED display screen is 1 μm-10 μm, specifically, but not limited to, 1 μm, 2 μm, 5 μm, and 10 μm. In the embodiment of the present application, the OD value of the covering ratio of the ink for the LED display screen is greater than 3. Further, the OD value of the covering ratio of the ink is greater than 4. In the embodiments of the present application, the ink for the LED display screen can be formed into ink layers of different thicknesses according to actual needs. For example, in some embodiments of the present application, the ink for LED display screen can be used to form an ink layer with a thickness of 0.1 mm-1 mm. Specifically, it can be, but not limited to, 0.1 mm, 0.3 mm, 0.5 mm, 0.7 mm, 0.8 mm, and 1 mm. The ink layer within the above thickness range can completely cover the gaps and edges of the LED display lamp beads, and eliminate the color difference of the PCB board.
本申请实施方式中，LED显示屏用油墨在45#钢上测试拉伸剪切强度大于或等于8MPa·s。进一步地，LED显示屏用油墨在45#钢上测试拉伸剪切强度为8MPa·s-40MPa·s，具体可以但不限于为8MPa·s、10MPa·s、12MPa·s、15MPa·s、19MPa·s、24MPa·s、27MPa·s、32MPa·s、35MPa·s、40MPa·s。In the embodiment of the present application, the tensile shear strength of the ink for LED display on 45# steel is greater than or equal to 8MPa·s. Further, the tensile shear strength of the ink for LED display screen tested on 45# steel is 8MPa·s-40MPa·s, which can be, but not limited to, 8MPa·s, 10MPa·s, 12MPa·s, 15MPa·s, 19MPa·s, 24MPa·s, 27MPa·s, 32MPa·s, 35MPa·s, 40MPa·s.
本申请还提供了一种LED显示屏用油墨的制备方法，包括以下步骤：The application also provides a preparation method of ink for LED display screen, comprising the following steps:
S01：将如下质量百分含量的各组分混合均匀，得到混合物：S01: Mix the components of the following mass percentages to obtain a mixture:
丙烯酸树脂：50％-60％；Acrylic resin: 50%-60%;
环氧树脂：10％-20％；Epoxy resin: 10%-20%;
固化剂：2％-5％；Curing agent: 2%-5%;
颜料：1％-3％；Pigment: 1%-3%;
填料：5％-10％；Filler: 5%-10%;
助剂：16％-31％；Auxiliary: 16%-31%;
S02：将所述混合物进行研磨后得到LED显示屏用油墨。S02: After grinding the mixture, the ink for LED display screen is obtained.
本申请实施方式中，步骤S01中，混合具体可以是搅拌混合，搅拌温度小于或等于45℃；本申请一些实施方式中，搅拌温度为15℃-45℃。具体可以但不限于为45℃、40℃、37℃、30℃、25℃、15℃。将各原料在适宜的温度下混合，能够保证油墨中的有机组分不易挥发，固化剂不会提前释放活性，并且各组分能够均匀分散。本申请实施方式中，搅拌混合过程中的搅拌速度为 500r/min-2000r/min；搅拌时间为20min-80min。本申请一些实施方式中，搅拌速度为800r/min-1000r/min，搅拌时间为40min-60min。通过控制搅拌速度和时间，能够使丙烯酸树脂和环氧树脂充分混合，形成稳定结构。In the embodiments of the present application, in step S01, the mixing may be specifically stirring and mixing, and the stirring temperature is less than or equal to 45°C; in some embodiments of the present application, the stirring temperature is 15°C-45°C. Specifically, but not limited to, 45°C, 40°C, 37°C, 30°C, 25°C, and 15°C. Mixing the raw materials at a suitable temperature can ensure that the organic components in the ink are not easily volatilized, the curing agent will not release the activity in advance, and the components can be uniformly dispersed. In the embodiment of the present application, the stirring speed in the stirring and mixing process is 500r/min-2000r/min; the stirring time is 20min-80min. In some embodiments of the present application, the stirring speed is 800r/min-1000r/min, and the stirring time is 40min-60min. By controlling the stirring speed and time, the acrylic resin and the epoxy resin can be fully mixed to form a stable structure.
本申请一些实施方式中，助剂可包括增韧剂、稀释剂、消泡剂、流平剂和分散剂中的一种或多种。具体选择如前文所述，此处不再赘述。In some embodiments of the present application, the adjuvant may include one or more of a toughening agent, a diluent, an antifoaming agent, a leveling agent and a dispersing agent. The specific selection is as described above and will not be repeated here.
本申请实施方式中，步骤S02中，研磨过程所用的设备包括圆盘式研磨机、转轴式研磨机和三辊研磨机中的一种。研磨过程具体可为：将混合物放入三辊研磨机中研磨，研磨转速为400r/min-600r/min，时间为30min-60min。在一具体实施方式中，研磨转速为460r/min，时间为35min。In the embodiment of the present application, in step S02, the equipment used in the grinding process includes one of a disc grinder, a rotary shaft grinder and a three-roll grinder. Specifically, the grinding process can be as follows: the mixture is put into a three-roll mill for grinding, the grinding speed is 400r/min-600r/min, and the time is 30min-60min. In a specific embodiment, the grinding speed is 460r/min, and the time is 35min.
本申请一具体实施方式中，LED显示屏用油墨的制备方法包括:先将丙烯酸树脂、环氧树脂、固化剂和增韧剂进行第一次混合，得到第一混合物；再向第一混合物中加入稀释剂、消泡剂、流平剂、分散剂、颜料和填料，进行第二次混合得到第二混合物；将第二混合物研磨均匀，得到LED显示屏用油墨。采用分步混合制备LED显示屏用油墨，可以使油墨中各组分更分散均匀。In a specific embodiment of the present application, the preparation method of ink for LED display screen includes: firstly mixing acrylic resin, epoxy resin, curing agent and toughening agent for the first time to obtain a first mixture; and then adding the first mixture to the first mixture. A diluent, a defoaming agent, a leveling agent, a dispersant, a pigment and a filler are added and mixed for a second time to obtain a second mixture; the second mixture is ground uniformly to obtain an ink for an LED display screen. Using step-by-step mixing to prepare ink for LED display screen can make the components in the ink more uniformly dispersed.
本申请提供的LED显示屏用油墨的制备方法简单，可进行大规模的生产。The preparation method of the ink for LED display screen provided by the present application is simple, and can be produced on a large scale.
请参见图1和图2，本申请还提供了一种LED显示屏100，LED显示屏100包括PCB板10和设置在PCB板10上的多个LED灯珠20，多个LED灯珠20间隔设置，PCB板10设置灯珠20的一侧表面设置油墨层30，油墨层30覆盖多个LED灯珠20的间隙和PCB板边缘，油墨层30采用本申请实施例提供的LED显示屏用油墨喷涂形成。1 and 2, the present application also provides an LED display screen 100, the LED display screen 100 includes a PCB board 10 and a plurality of LED lamp beads 20 disposed on the PCB board 10, and the plurality of LED lamp beads 20 are spaced apart The ink layer 30 is provided on the side surface of the PCB board 10 where the lamp beads 20 are arranged. The ink layer 30 covers the gaps between the plurality of LED lamp beads 20 and the edge of the PCB board. Formed by spray.
本申请实施方式中，多个LED灯珠20可以是如图2所示阵列排布设置在PCB板10上，也可以根据需要按其他方式排布。In the embodiment of the present application, the plurality of LED lamp beads 20 may be arranged on the PCB board 10 in an array as shown in FIG. 2 , or may be arranged in other manners as required.
本申请实施方式中，将LED显示屏用油墨喷涂至PCB板表面具体可以是：采用带有气动驱动或压电驱动喷墨阀的喷墨机将LED显示屏用油墨喷涂在 PCB板表面。喷涂后再进行固化操作，固化温度可以是80℃-130℃，固化时间可以是20min-60min。具体的，固化温度可以但不限于是80℃、85℃、90℃、95℃、98℃、100℃、105℃、110℃、115℃、120℃、130℃，固化时间可以但不限于是20min、30min、35min、40min、45min、50min、60min。通过控制固化温度和固化时间，能够保证环氧树脂和固化剂充分交联，形成稳定的油墨层。In the embodiment of the present application, spraying the ink for the LED display screen onto the surface of the PCB board may specifically be: spraying the ink for the LED display screen on the surface of the PCB board by using an inkjet machine with a pneumatically driven or piezoelectrically driven inkjet valve. After spraying, the curing operation can be carried out. The curing temperature can be 80℃-130℃, and the curing time can be 20min-60min. Specifically, the curing temperature can be, but is not limited to, 80°C, 85°C, 90°C, 95°C, 98°C, 100°C, 105°C, 110°C, 115°C, 120°C, and 130°C, and the curing time can be, but is not limited to, 20min, 30min, 35min, 40min, 45min, 50min, 60min. By controlling the curing temperature and curing time, the epoxy resin and the curing agent can be fully cross-linked to form a stable ink layer.
本申请一些实施方式中，油墨层30的厚度为0.1mm-1mm。具体可以但不限于为0.1mm、0.3mm、0.5mm、0.6mm、0.8mm、1mm。通过在LED显示屏上设置上述厚度的油墨层，能够完全消除PCB板的色差并且能有效加固LED灯珠，提升灯珠的防撞效果。In some embodiments of the present application, the thickness of the ink layer 30 is 0.1 mm-1 mm. Specifically, it may be, but not limited to, 0.1 mm, 0.3 mm, 0.5 mm, 0.6 mm, 0.8 mm, and 1 mm. By arranging an ink layer of the above thickness on the LED display screen, the color difference of the PCB board can be completely eliminated, the LED lamp beads can be effectively strengthened, and the anti-collision effect of the lamp beads can be improved.
本申请实施方式中，油墨层30的设置消除了PCB板的色差并提高了LED灯珠的防撞能力，同时解决了PCB板色差问题和LED灯珠脱落问题。本申请实施方式中，油墨层30的设置使LED灯珠的推力达到3.0kg-6.0kg。具体例如为3.0kg、3.5kg、4.0kg、5kg、6kg。In the embodiment of the present application, the arrangement of the ink layer 30 eliminates the color difference of the PCB board and improves the anti-collision capability of the LED lamp beads, and simultaneously solves the problem of the color difference of the PCB board and the problem of the LED lamp beads falling off. In the embodiment of the present application, the setting of the ink layer 30 makes the thrust of the LED lamp beads reach 3.0kg-6.0kg. Specifically, for example, 3.0 kg, 3.5 kg, 4.0 kg, 5 kg, and 6 kg.
下面分多个实施例对本申请实施方式进行进一步地说明。The embodiments of the present application will be further described below in terms of a plurality of embodiments.
实施例1：Example 1:
一种LED显示屏用油墨及其制备方法，该油墨由表1所示质量配比的原料组成。An ink for an LED display screen and a preparation method thereof, the ink is composed of raw materials in the mass ratio shown in Table 1.
表1 实施例1 LED显示屏用油墨原料组成Table 1 Example 1 Composition of ink raw materials for LED display screen
丙烯酸树脂：55％Acrylic: 55% 双酚A型环氧树脂：15％Bisphenol A epoxy resin: 15%
双氰胺：4％Dicyandiamide: 4% 橡胶型环氧树脂(增韧剂)：5％Rubber type epoxy resin (toughening agent): 5%
环己烷-1,2-二羧酸二缩水甘油酯：10％Cyclohexane-1,2-dicarboxylate diglycidyl ester: 10% 聚醚改性有机硅消泡剂：1％Polyether modified silicone defoamer: 1%
聚醚改性有机硅流平剂：1％Polyether modified silicone leveling agent: 1% 聚酯类分散剂：1％Polyester dispersant: 1%
球形纳米二氧化硅：7％Spherical Nano Silica: 7% 炭黑颜料：1％Carbon Black Pigment: 1%
LED显示屏用油墨的制备方法为：The preparation method of ink for LED display screen is as follows:
(1)按LED显示屏用油墨所含组分以及含量称取各原料。(1) Weigh each raw material according to the components and contents of the ink for LED display.
(2)将称取的原料在搅拌机中搅拌均匀，搅拌温度在35℃，搅拌速度为900r/min，搅拌时间为30min，得到混合物。(2) The weighed raw materials are stirred evenly in a mixer, the stirring temperature is 35° C., the stirring speed is 900 r/min, and the stirring time is 30 min to obtain a mixture.
(3)将混合物放入三辊研磨机中研磨，研磨转速为500r/min，时间为40min。得到LED显示屏用油墨。(3) Put the mixture into a three-roll mill for grinding, the grinding speed is 500r/min, and the time is 40min. Ink for LED display was obtained.
一种LED显示屏油墨层的制备方法：A preparation method of an LED display ink layer:
使用压电驱动喷墨阀的喷墨机将上述LED显示屏用油墨喷涂在LED显示屏灯珠的间隙和PCB板边缘，将油墨在95℃温度条件下固化50min，固化后得到LED显示屏油墨层，油墨层的厚度为0.2mm。The above-mentioned LED display ink was sprayed on the gap between the LED display lamp beads and the edge of the PCB board using an inkjet machine with a piezoelectrically driven inkjet valve, and the ink was cured at a temperature of 95 ° C for 50 minutes, and the LED display ink was obtained after curing. layer, the thickness of the ink layer is 0.2mm.
实施例2：Example 2:
一种LED显示屏用油墨及其制备方法，该油墨由表2所示质量配比的原料组成。An ink for an LED display screen and a preparation method thereof, the ink is composed of raw materials in the mass ratio shown in Table 2.
表2 实施例2 LED显示屏用油墨原料组成Table 2 Example 2 Composition of ink raw materials for LED display screen
丙烯酸树脂：51％Acrylic: 51% 脂环族环氧树脂：19％Cycloaliphatic epoxy resin: 19%
三氟化硼单乙胺：3％Boron trifluoride monoethylamine: 3% 聚氨酯型环氧树脂(增韧剂)：5.5％Polyurethane type epoxy resin (toughening agent): 5.5%
甲苯基缩水甘油醚：10％Tolyl glycidyl ether: 10% 聚醚改性有机硅消泡剂：1.5％Polyether modified silicone defoamer: 1.5%
聚醚改性有机硅流平剂：1.3％Polyether modified silicone leveling agent: 1.3% 聚酯类分散剂：0.7％Polyester dispersant: 0.7%
球形纳米二氧化钛：6％Spherical Nano Titanium Dioxide: 6% 炭黑颜料：2％Carbon Black Pigment: 2%
LED显示屏用油墨的制备方法为：The preparation method of ink for LED display screen is as follows:
(1)按LED显示屏用油墨所含组分以及含量称取各原料。(1) Weigh each raw material according to the components and contents of the ink for LED display.
(2)将称取的原料在搅拌机中搅拌均匀，搅拌温度在37℃，搅拌速度为830r/min，搅拌时间为40min，得到混合物。(2) The weighed raw materials are stirred evenly in a mixer, the stirring temperature is 37° C., the stirring speed is 830 r/min, and the stirring time is 40 min to obtain a mixture.
(3)将混合物放入三辊研磨机中研磨，研磨转速为450r/min，时间为45min。得到LED显示屏用油墨。(3) Put the mixture into a three-roll mill for grinding, the grinding speed is 450r/min, and the time is 45min. Ink for LED display was obtained.
一种LED显示屏油墨层的制备方法：A preparation method of an LED display ink layer:
使用气驱动喷墨阀的喷墨机将上述LED显示屏用油墨喷涂在LED显示屏灯珠的间隙和PCB板边缘，将油墨在105℃温度条件下固化45min，固化后得到LED显示屏油墨层，油墨层的厚度为0.3mm。Using an inkjet machine with an air-driven inkjet valve, the above-mentioned LED display ink was sprayed on the gap between the LED display lamp beads and the edge of the PCB board, and the ink was cured at a temperature of 105 ° C for 45 minutes, and the LED display ink layer was obtained after curing. , the thickness of the ink layer is 0.3mm.
实施例3：Example 3:
一种LED显示屏用油墨及其制备方法，该油墨由表3所示质量配比的原料组成。An ink for an LED display screen and a preparation method thereof, the ink is composed of raw materials in the mass ratio shown in Table 3.
表3 实施例3 LED显示屏用油墨原料组成Table 3 Example 3 Composition of ink raw materials for LED display screen
丙烯酸树脂：60％Acrylic: 60% 酚醛型环氧树脂：10％Novolac epoxy resin: 10%
2-甲基咪唑：3.5％2-Methylimidazole: 3.5% 聚氨酯型环氧树脂(增韧剂)：5.5％Polyurethane type epoxy resin (toughening agent): 5.5%
甲苯基缩水甘油醚：10％Tolyl glycidyl ether: 10% 聚醚改性有机硅消泡剂：1％Polyether modified silicone defoamer: 1%
氟碳化合物类流平剂：1.5％Fluorocarbon leveling agent: 1.5% 聚酯类分散剂：1％Polyester dispersant: 1%
纳米二氧化硅：6％Nano silica: 6% 炭黑颜料：1.5％Carbon Black Pigment: 1.5%
LED显示屏用油墨的制备方法为：The preparation method of ink for LED display screen is as follows:
(1)按LED显示屏用油墨所含组分以及含量称取各原料。(1) Weigh each raw material according to the components and contents of the ink for LED display.
(2)将称取的原料在搅拌机中搅拌均匀，搅拌温度在30℃，搅拌速度为830r/min，搅拌时间为40min，得到混合物。(2) The weighed raw materials are stirred evenly in a mixer, the stirring temperature is 30° C., the stirring speed is 830 r/min, and the stirring time is 40 min to obtain a mixture.
(3)将混合物放入三辊研磨机中研磨，研磨转速为450r/min，时间为45min。得到LED显示屏用油墨。(3) Put the mixture into a three-roll mill for grinding, the grinding speed is 450r/min, and the time is 45min. Ink for LED display was obtained.
一种LED显示屏油墨层的制备方法：A preparation method of an LED display ink layer:
使用气驱动喷墨阀的喷墨机将上述LED显示屏用油墨喷涂在LED显示屏灯珠的间隙和PCB板边缘，将油墨在115℃温度条件下固化40min，固化后得 到LED显示屏油墨层，油墨层的厚度为0.4mm。Using an inkjet machine with an air-driven inkjet valve, the above-mentioned LED display ink was sprayed on the gap between the LED display lamp beads and the edge of the PCB board, and the ink was cured at a temperature of 115 ° C for 40 minutes, and the LED display ink layer was obtained after curing. , the thickness of the ink layer is 0.4mm.
实施例4：Example 4:
一种LED显示屏用油墨及其制备方法，该油墨由表4所示质量配比的原料组成。An ink for an LED display screen and a preparation method thereof, the ink is composed of raw materials with the mass ratio shown in Table 4.
表4 实施例4 LED显示屏用油墨原料组成Table 4 Example 4 Composition of ink raw materials for LED display screen
丙烯酸树脂：55％Acrylic: 55% 双酚F型环氧树脂：15％Bisphenol F type epoxy resin: 15%
三氟化硼吡啶：3％Boron trifluoride pyridine: 3% 二聚酸型环氧树脂(增韧剂)：6％Dimer acid type epoxy resin (toughening agent): 6%
甲苯基缩水甘油醚：10％Tolyl glycidyl ether: 10% 聚醚改性有机硅消泡剂：1％Polyether modified silicone defoamer: 1%
氟碳化合物类流平剂：1.5％Fluorocarbon leveling agent: 1.5% 聚酯类分散剂：1％Polyester dispersant: 1%
纳米碳酸钙：6％Nano calcium carbonate: 6% 炭黑颜料：1.5％Carbon Black Pigment: 1.5%
LED显示屏用油墨的制备方法为：The preparation method of ink for LED display screen is as follows:
(1)按LED显示屏用油墨所含组分以及含量称取各原料。(1) Weigh each raw material according to the components and contents of the ink for LED display.
(2)将称取的原料在搅拌机中搅拌均匀，搅拌温度在37℃，搅拌速度为800r/min，搅拌时间为60min，得到混合物。(2) The weighed raw materials are stirred evenly in a mixer, the stirring temperature is 37° C., the stirring speed is 800 r/min, and the stirring time is 60 min to obtain a mixture.
(3)将混合物放入三辊研磨机中研磨，研磨转速为600r/min，时间为30min。得到LED显示屏用油墨。(3) Put the mixture into a three-roll mill for grinding, the grinding speed is 600r/min, and the time is 30min. Ink for LED display was obtained.
一种LED显示屏油墨层的制备方法：A preparation method of an LED display ink layer:
使用压电驱动喷墨阀的喷墨机将上述LED显示屏用油墨喷涂在LED显示屏灯珠的间隙和PCB板边缘，将油墨在130℃温度条件下固化30min，固化后得到LED显示屏油墨层，油墨层的厚度为0.35mm。The above-mentioned LED display ink was sprayed on the gap between the LED display lamp beads and the edge of the PCB board using an inkjet machine driven by a piezoelectric inkjet valve, and the ink was cured at a temperature of 130 ° C for 30 minutes, and the LED display ink was obtained after curing. layer, the thickness of the ink layer is 0.35mm.
效果实施例Effect Example
(1)粘度测试(1) Viscosity test
采用GB/T 13217.5-2008方法对实施例1-4的LED显示屏用油墨的粘度进行测量，结果请参见表5。Adopt GB/T 13217.5-2008 method to measure the viscosity of the ink for LED display of Examples 1-4, the results are shown in Table 5.
(2)拉伸剪切强度测试(2) Tensile shear strength test
使用GB/T 7124-2008方法对实施例1-4的LED显示屏用油墨的拉伸剪切强度进行测量，其中，试件材质为45#钢，结果请参见表5。Use GB/T 7124-2008 method to measure the tensile shear strength of the ink for LED display of Examples 1-4, wherein, the material of the test piece is 45# steel, the results are shown in Table 5.
(3)灯珠推力测试(3) Lamp bead thrust test
使用JEITA ED 4701方法对实施例1-4中的LED显示屏进行LED灯珠推力测试，结果请参见表5。Using the JEITA ED 4701 method, the LED lamp bead thrust test was performed on the LED display screens in Examples 1-4, and the results are shown in Table 5.
表5 实施例1-4制得LED显示屏用油墨和油墨层的性能参数表Table 5 The performance parameter table of the ink for LED display screen and the ink layer obtained in Example 1-4
Figure PCTCN2020119455-appb-000001
Figure PCTCN2020119455-appb-000001
从表5的测试结果可以看出，本申请实施例提供的LED显示屏用油墨，粘度适中具有良好的流动性，便于均匀喷涂；油墨颗粒的粒径大小适中，不会堵住喷墨机喷嘴；油墨具有较好的拉伸剪切强度，灯珠推力测试结果表明喷涂油墨后LED灯珠具有较好的防撞能力。It can be seen from the test results in Table 5 that the inks for LED display screens provided in the examples of the present application have moderate viscosity and good fluidity, which is convenient for uniform spraying; ; The ink has good tensile shear strength, and the test results of the lamp bead thrust show that the LED lamp bead has a good anti-collision ability after spraying the ink.

Claims (12)

  1. 一种LED显示屏用油墨，其特征在于，所述LED显示屏用油墨包括以下质量百分含量的各原料：An ink for an LED display screen, characterized in that the ink for an LED display screen comprises the following raw materials by mass percentage:
    丙烯酸树脂：50％-60％；Acrylic resin: 50%-60%;
    环氧树脂：10％-20％；Epoxy resin: 10%-20%;
    固化剂：2％-5％；Curing agent: 2%-5%;
    颜料：1％-3％；Pigment: 1%-3%;
    填料：5％-10％；Filler: 5%-10%;
    助剂：16％-31％。Auxiliary: 16%-31%.
  2. 如权利要求1所述的LED显示屏用油墨，其特征在于，所述颜料包括炭黑；所述颜料的粒径为1nm-100nm。The ink for an LED display screen according to claim 1, wherein the pigment comprises carbon black; and the particle size of the pigment is 1 nm-100 nm.
  3. 如权利要求1或2所述的LED显示屏用油墨，其特征在于，所述填料包括二氧化钛、二氧化硅、硫酸钙、碳酸钙、氧化铝和氮化铝中的一种或多种；所述填料的粒径为1nm-500nm。The ink for LED display screen according to claim 1 or 2, wherein the filler comprises one or more of titanium dioxide, silicon dioxide, calcium sulfate, calcium carbonate, aluminum oxide and aluminum nitride; the The particle size of the filler is 1 nm-500 nm.
  4. 如权利要求1-3任一项所述的LED显示屏用油墨，其特征在于，所述丙烯酸树脂在25℃下的粘度为300mPa·s-3000mPa·s；所述环氧树脂在25℃下的粘度为1000mPa·s-3000mPa·s。The ink for LED display screen according to any one of claims 1-3, wherein the viscosity of the acrylic resin at 25°C is 300mPa·s-3000mPa·s; the epoxy resin at 25°C has a viscosity of 300mPa·s-3000mPa·s; The viscosity is 1000mPa·s-3000mPa·s.
  5. 如权利要求1-4任一项所述的LED显示屏用油墨，其特征在于，所述固化剂包括改性胺类固化剂、双氰胺类固化剂和咪唑类固化剂中的一种或多种。The ink for LED display screen according to any one of claims 1-4, wherein the curing agent comprises one of modified amine curing agent, dicyandiamide curing agent and imidazole curing agent or variety.
  6. 如权利要求1-5任一项所述的LED显示屏用油墨，其特征在于，所述助剂包括增韧剂、稀释剂、消泡剂、流平剂和分散剂中的一种或多种。The ink for LED display screen according to any one of claims 1-5, wherein the auxiliary agent comprises one or more of a toughening agent, a diluent, a defoaming agent, a leveling agent and a dispersing agent kind.
  7. 如权利要求6所述的LED显示屏用油墨，其特征在于，所述LED显示屏用油墨包括以下质量百分含量的各原料：The ink for LED display screen according to claim 6, characterized in that, the ink for LED display screen comprises each raw material of the following mass percentages:
    丙烯酸树脂：50％-60％；Acrylic resin: 50%-60%;
    环氧树脂：10％-20％；Epoxy resin: 10%-20%;
    固化剂：2％-5％；Curing agent: 2%-5%;
    颜料：1％-3％；Pigment: 1%-3%;
    填料：5％-10％；Filler: 5%-10%;
    增韧剂：5％-10％；Toughening agent: 5%-10%;
    稀释剂：10％-15％；Thinner: 10%-15%;
    消泡剂：0.5％-2％；Defoamer: 0.5%-2%;
    流平剂：0.5％-2％；Leveling agent: 0.5%-2%;
    分散剂：0.5％-2％。Dispersant: 0.5%-2%.
  8. 如权利要求1-7任一项所述的LED显示屏用油墨，其特征在于，所述LED显示屏用油墨颗粒粒径为1μm-10μm。The ink for LED display screen according to any one of claims 1-7, wherein the particle size of the ink for LED display screen is 1 μm-10 μm.
  9. 如权利要求1-8任一项所述的LED显示屏用油墨，其特征在于，所述LED显示屏用油墨在25℃下的粘度为300mPa·s-1500mPa·s。The ink for LED display screen according to any one of claims 1 to 8, wherein the viscosity of the ink for LED display screen at 25°C is 300mPa·s-1500mPa·s.
  10. 如权利要求1-9任一项所述的LED显示屏用油墨，其特征在于，所述LED显示屏用油墨的拉伸剪切强度为8MPa·s-40MPa·s。The ink for LED display screen according to any one of claims 1 to 9, wherein the tensile shear strength of the ink for LED display screen is 8MPa·s-40MPa·s.
  11. 一种LED显示屏，其特征在于，包括如权利要求1-10任一项所述的LED显示屏用油墨形成的油墨层。An LED display screen is characterized by comprising an ink layer formed by the ink for an LED display screen according to any one of claims 1-10.
  12. 如权利要求11所述的LED显示屏，其特征在于，所述油墨层的厚度为0.1mm-1mm。The LED display screen according to claim 11, wherein the thickness of the ink layer is 0.1mm-1mm.
PCT/CN2020/119455 2020-09-30 2020-09-30 Ink for led display screen and led display screen WO2022067690A1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115873521A (en) * 2022-12-27 2023-03-31 佛山市顺德区现生包装材料有限公司 Wine red shading adhesive tape

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CN102757692A (en) * 2011-06-10 2012-10-31 戴龙飞 Thermosetting system white ink composition of LED flexible strip plate
CN108059880A (en) * 2017-12-31 2018-05-22 中山市威傲联复合材料有限公司 A kind of outdoor LED display screen gap masking ink and preparation method thereof
CN108774426A (en) * 2018-07-06 2018-11-09 南雄市科鼎化工有限公司 A kind of high performance surface attachment ink and preparation method thereof

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102757692A (en) * 2011-06-10 2012-10-31 戴龙飞 Thermosetting system white ink composition of LED flexible strip plate
CN108059880A (en) * 2017-12-31 2018-05-22 中山市威傲联复合材料有限公司 A kind of outdoor LED display screen gap masking ink and preparation method thereof
CN108774426A (en) * 2018-07-06 2018-11-09 南雄市科鼎化工有限公司 A kind of high performance surface attachment ink and preparation method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115873521A (en) * 2022-12-27 2023-03-31 佛山市顺德区现生包装材料有限公司 Wine red shading adhesive tape
CN115873521B (en) * 2022-12-27 2023-12-15 佛山市顺德区现生包装材料有限公司 Wine red shading adhesive tape

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