CN116426214B - Ultraviolet light curing dispensing coating for LED lattice module - Google Patents
Ultraviolet light curing dispensing coating for LED lattice module Download PDFInfo
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- CN116426214B CN116426214B CN202310118132.3A CN202310118132A CN116426214B CN 116426214 B CN116426214 B CN 116426214B CN 202310118132 A CN202310118132 A CN 202310118132A CN 116426214 B CN116426214 B CN 116426214B
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- 238000000576 coating method Methods 0.000 title claims abstract description 56
- 239000011248 coating agent Substances 0.000 title claims abstract description 54
- 239000004593 Epoxy Substances 0.000 claims abstract description 42
- -1 polysiloxane acrylate Polymers 0.000 claims abstract description 39
- 239000011159 matrix material Substances 0.000 claims abstract description 35
- 239000000178 monomer Substances 0.000 claims abstract description 27
- 239000000080 wetting agent Substances 0.000 claims abstract description 10
- 239000003999 initiator Substances 0.000 claims abstract description 8
- 239000002318 adhesion promoter Substances 0.000 claims abstract description 6
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 5
- 239000002518 antifoaming agent Substances 0.000 claims abstract 2
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 18
- 229920001296 polysiloxane Polymers 0.000 claims description 18
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 13
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 10
- NWVVVBRKAWDGAB-UHFFFAOYSA-N p-methoxyphenol Chemical compound COC1=CC=C(O)C=C1 NWVVVBRKAWDGAB-UHFFFAOYSA-N 0.000 claims description 10
- 239000002904 solvent Substances 0.000 claims description 9
- XXBDWLFCJWSEKW-UHFFFAOYSA-N dimethylbenzylamine Chemical compound CN(C)CC1=CC=CC=C1 XXBDWLFCJWSEKW-UHFFFAOYSA-N 0.000 claims description 7
- 239000013530 defoamer Substances 0.000 claims description 6
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-M acrylate group Chemical group C(C=C)(=O)[O-] NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 5
- NWAHZAIDMVNENC-UHFFFAOYSA-N octahydro-1h-4,7-methanoinden-5-yl methacrylate Chemical group C12CCCC2C2CC(OC(=O)C(=C)C)C1C2 NWAHZAIDMVNENC-UHFFFAOYSA-N 0.000 claims description 4
- MUTNCGKQJGXKEM-UHFFFAOYSA-N tamibarotene Chemical compound C=1C=C2C(C)(C)CCC(C)(C)C2=CC=1NC(=O)C1=CC=C(C(O)=O)C=C1 MUTNCGKQJGXKEM-UHFFFAOYSA-N 0.000 claims description 4
- 229910021485 fumed silica Inorganic materials 0.000 claims description 3
- 150000003254 radicals Chemical group 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 229920005989 resin Polymers 0.000 abstract description 20
- 239000011347 resin Substances 0.000 abstract description 20
- 239000012752 auxiliary agent Substances 0.000 abstract description 3
- 230000002195 synergetic effect Effects 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 40
- 238000001723 curing Methods 0.000 description 25
- 239000000853 adhesive Substances 0.000 description 17
- 230000001070 adhesive effect Effects 0.000 description 17
- 239000000463 material Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- VFHVQBAGLAREND-UHFFFAOYSA-N diphenylphosphoryl-(2,4,6-trimethylphenyl)methanone Chemical compound CC1=CC(C)=CC(C)=C1C(=O)P(=O)(C=1C=CC=CC=1)C1=CC=CC=C1 VFHVQBAGLAREND-UHFFFAOYSA-N 0.000 description 6
- 230000000007 visual effect Effects 0.000 description 6
- 239000002253 acid Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000002834 transmittance Methods 0.000 description 5
- 239000011324 bead Substances 0.000 description 4
- 238000004821 distillation Methods 0.000 description 4
- 208000002173 dizziness Diseases 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000003973 paint Substances 0.000 description 4
- 239000012956 1-hydroxycyclohexylphenyl-ketone Substances 0.000 description 3
- MPIAGWXWVAHQBB-UHFFFAOYSA-N [3-prop-2-enoyloxy-2-[[3-prop-2-enoyloxy-2,2-bis(prop-2-enoyloxymethyl)propoxy]methyl]-2-(prop-2-enoyloxymethyl)propyl] prop-2-enoate Chemical class C=CC(=O)OCC(COC(=O)C=C)(COC(=O)C=C)COCC(COC(=O)C=C)(COC(=O)C=C)COC(=O)C=C MPIAGWXWVAHQBB-UHFFFAOYSA-N 0.000 description 3
- MQDJYUACMFCOFT-UHFFFAOYSA-N bis[2-(1-hydroxycyclohexyl)phenyl]methanone Chemical compound C=1C=CC=C(C(=O)C=2C(=CC=CC=2)C2(O)CCCCC2)C=1C1(O)CCCCC1 MQDJYUACMFCOFT-UHFFFAOYSA-N 0.000 description 3
- 210000001638 cerebellum Anatomy 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 210000005036 nerve Anatomy 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000003556 assay Methods 0.000 description 2
- 239000006229 carbon black Substances 0.000 description 2
- UHESRSKEBRADOO-UHFFFAOYSA-N ethyl carbamate;prop-2-enoic acid Chemical class OC(=O)C=C.CCOC(N)=O UHESRSKEBRADOO-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 229910002012 Aerosil® Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000003848 UV Light-Curing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- DIDDVZFHORVZMG-UHFFFAOYSA-N methyl 2-methylprop-2-eneperoxoate Chemical group COOC(=O)C(C)=C DIDDVZFHORVZMG-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- HQYALQRYBUJWDH-UHFFFAOYSA-N trimethoxy(propyl)silane Chemical compound CCC[Si](OC)(OC)OC HQYALQRYBUJWDH-UHFFFAOYSA-N 0.000 description 1
- YUYCVXFAYWRXLS-UHFFFAOYSA-N trimethoxysilane Chemical compound CO[SiH](OC)OC YUYCVXFAYWRXLS-UHFFFAOYSA-N 0.000 description 1
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
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
- C09D183/06—Polysiloxanes containing silicon bound to oxygen-containing groups
-
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Paints Or Removers (AREA)
Abstract
The invention provides an ultraviolet light curing dispensing coating for a light-emitting diode lattice module, and relates to the technical field of coatings; the coating comprises the following components in parts by weight: 30-50 parts of epoxy polysiloxane acrylate oligomer; 35-65 parts of monomer; 0.1 to 0.5 part of wetting agent; 2-5 parts of adhesion promoter; 0.1 to 0.5 part of anti-settling agent; 0.1 to 0.5 part of defoaming agent; 5-8 parts of initiator. According to the ultraviolet light curing dispensing coating for the LED dot matrix module, the epoxy polysiloxane acrylate oligomer is used as UV resin, and the phenomena of light wave interference fringes and light wave diffraction fringes generated on the surface of the LED dot matrix module are effectively solved through the synergistic effect of the epoxy polysiloxane acrylate oligomer, the monomer and other auxiliary agents.
Description
Technical Field
The invention relates to the technical field of coatings, in particular to an ultraviolet light curing dispensing coating for a light-emitting diode lattice module.
Background
The LED display screen is a novel information display medium, and is a planar display screen formed by utilizing LED lattice modules or pixel units. Fig. 1 is a block diagram of an 8×8 matrix LED display, where, in view of the figure, 64 LEDs are required for the 8×8 matrix, and each LED is placed at an intersection of a row line and a column line, and when a corresponding row is set at a high level and a column is set at a low level, the corresponding LED is turned on. For example, when the text is to be displayed, the corresponding diode can be lightened according to strokes forming the text, so that the purpose of displaying the text is achieved, as shown in fig. 2. The complete lattice can be composed of 16×16, 32×32, etc. to form a display module.
According to the display device, the LED display screen comprises an LED digital display screen and an LED dot matrix image-text display screen; the display device in the LED digital display screen is a 7-section code digital tube, and is suitable for manufacturing electronic display screens for displaying numbers, such as clock screens, interest rate screens and the like. The display device in the LED lattice image-text display screen is a lattice display module composed of a plurality of uniformly arranged light emitting diodes, and is suitable for playing text and image information. As shown in fig. 3, white dots are matrix dots, and black areas are matrix eyes.
When the LED lattice module is powered on or not powered on, when people are in visual contact with the LED display screen, as the lattice points and the lattice eyes generate various different reflected lights, based on the wave particle bispin of light, as shown in fig. 4-7, the reflected lights between the lattice eyes and the lattice points generate light wave interference and diffraction phenomena, and the light wave interference fringes and the light wave diffraction fringes can enter eyes and cause visual spirit to be stimulated to lose control over the eyes, and the eyes are closed instinctively to dizziness or see objects in unclear places; the situation can damage the visual nerve, human cerebellum and mind while damaging eyes, and limits the application of the LED dot matrix module.
Disclosure of Invention
The invention aims to solve the technical problems that: in order to solve the problem that an LED dot matrix module in the prior art damages eyes due to light interference and diffraction, the invention provides an ultraviolet light curing dispensing coating, which is dispensed into the eyes of the LED dot matrix module to enable the dispensing in the eyes and the LED lamp bead module to form a plane, and then the LED dot matrix module is cured by UV to obtain a flat LED dot matrix module, thereby effectively solving the problems of light wave interference and diffraction caused by reflected light between the eyes and the dots of the LED dot matrix module and reducing the damage to eyes when people watch an LED display screen.
The technical scheme adopted for solving the technical problems is as follows:
the ultraviolet light curing dispensing coating for the LED lattice module comprises the following components in parts by weight:
optionally, the epoxy polysiloxane acrylate oligomer is prepared as follows: toluene and N, N-dimethylbenzylamine are mixed, epoxy polysiloxane, acrylic acid and para-hydroxyanisole are added to react for 6 hours at 100-110 ℃, and the solvent and unreacted acrylic acid are removed by reduced pressure distillation, so that the epoxy polysiloxane acrylate oligomer is obtained.
Optionally, the monomer is a monofunctional monomer and a polyfunctional monomer according to a mass ratio of (40-50): (10-20) a mixture.
Optionally, the monomer is dicyclopentanyl methacrylate and tetrahydrofurfuryl acrylate according to the mass ratio of (30-40): (8-12).
Alternatively, the polyfunctional monomer is 6 mohr caprolactone-modified dipentaerythritol hexaacrylate.
Optionally, the wetting agent is a silicone wetting agent.
Optionally, the adhesion promoter is a silane coupling agent.
Optionally, the anti-settling agent is fumed silica white carbon black.
Optionally, the defoamer is an acrylate defoamer.
Optionally, the initiator is a free radical initiator.
The beneficial effects of the invention are as follows:
according to the ultraviolet light curing dispensing coating for the LED dot matrix module, the epoxy polysiloxane acrylate oligomer is used as UV resin, through the synergistic effect of the epoxy polysiloxane acrylate oligomer, the epoxy polysiloxane acrylate oligomer and the monomers and other auxiliary agents, after the coating is dispensed into the array eyes of the LED dot matrix module in a dispensing mode, the dispensing in the array eyes and the LED lamp bead module form a horizontal plane, and then the LED dot matrix module is cured by UV, so that a flat LED dot matrix module is obtained, the phenomena of light wave interference fringes and light wave diffraction fringes generated on the surface of the LED dot matrix module are effectively solved, the problem of dizziness is avoided when people watch the LED display screen on the basis of not affecting the display function and the service life of the LED display screen, the damage to eyes is reduced, the damage to visual nerves, human cerebellum and psychology is further reduced, and the application range of the LED dot matrix is expanded.
Drawings
The invention will be further described with reference to the drawings and examples.
FIG. 1 is a schematic diagram of an 8×8 dot matrix LED display;
FIG. 2 is a schematic diagram of an LED display screen displaying text;
FIG. 3 is a schematic diagram of a dot matrix display module;
FIG. 4 is a schematic diagram of the interference and diffraction of light;
FIG. 5 is a second diagram of interference and diffraction of light;
FIG. 6 is a diagram of interference and diffraction of light;
fig. 7 is a diagram showing interference and diffraction of light.
Detailed Description
The present invention will now be described in further detail. The embodiments described below are exemplary and intended to illustrate the invention and should not be construed as limiting the invention, as all other embodiments, based on which a person of ordinary skill in the art would obtain without inventive faculty, are within the scope of the invention.
In order to solve the problem that an LED lattice module in the prior art damages eyes due to light interference and diffraction, the invention provides an ultraviolet light curing dispensing coating for an LED lattice module, which comprises the following components in parts by weight:
according to the ultraviolet light curing dispensing coating for the LED dot matrix module, the epoxy polysiloxane acrylate oligomer is used as UV resin, through the synergistic effect of the epoxy polysiloxane acrylate oligomer, the epoxy polysiloxane acrylate oligomer and the monomers and other auxiliary agents, after the coating is dispensed into the array eyes of the LED dot matrix module in a dispensing mode, the dispensing in the array eyes and the LED lamp bead module form a horizontal plane, and then the LED dot matrix module is cured by UV, so that a flat LED dot matrix module is obtained, the phenomena of light wave interference fringes and light wave diffraction fringes generated on the surface of the LED dot matrix module are effectively solved, the problem of dizziness is avoided when people watch the LED display screen on the basis of not affecting the display function and the service life of the LED display screen, the damage to eyes is reduced, the damage to visual nerves, human cerebellum and psychology is further reduced, and the application range of the LED dot matrix is expanded.
According to the invention, the epoxy polysiloxane acrylate oligomer is used as the UV resin, so that the cured film obtained after UV curing has the characteristics of excellent adhesiveness, wear resistance, high and low temperature resistance, solvent resistance, acid resistance, weak base resistance, high tensile strength and modulus, high refractive index and good electrical property, and therefore, the problems of light wave interference fringes and light wave diffraction fringes generated on the surface of the LED lattice module can be solved, the display function and the service life of an LED display screen are not influenced, and the application range of an LED lattice is enlarged.
The preferred epoxy polysiloxane acrylate oligomers of the present invention are prepared as follows: toluene and N, N-dimethylbenzylamine are mixed, epoxy polysiloxane, acrylic acid and para-hydroxyanisole are added to react for 6 hours at 100-110 ℃, and the solvent and unreacted acrylic acid are removed by reduced pressure distillation, so that the epoxy polysiloxane acrylate oligomer is obtained.
The preparation method comprises the steps of taking toluene as a solvent, N, N-dimethylbenzylamine as a catalyst and p-hydroxyanisole as a polymerization inhibitor, reacting epoxy polysiloxane with an equivalent amount of acrylic acid at 100-110 ℃ for 6 hours, measuring the acid value and the epoxy conversion rate to be about 90%, and distilling under reduced pressure to remove the solvent and unreacted acrylic acid, thereby obtaining the epoxy polysiloxane acrylate oligomer.
In order to achieve both reaction rate and economy, the molar ratio of epoxy polysiloxane to acrylic acid is preferably 1:1, a step of; the mass ratio of the N, N-dimethylbenzylamine to the epoxy polysiloxane is 0.1:100; the mass ratio of the para-hydroxyanisole to the epoxy polysiloxane is 0.1:100.
In order to ensure that the epoxy polysiloxane acrylate oligomer has the properties of higher hardness of a cured film, wear resistance of the surface, good electrical property, solvent resistance, acid resistance, weak base resistance, high and low temperature resistance, high tensile strength, modulus and high refractive index, the epoxy polysiloxane is preferably W1000-A of the new material Co-Ltd of four seas in Hubei area.
In order to give consideration to the curing speed of the dispensing coating and the comprehensive performance of the cured film, the monomer is preferably a monofunctional monomer and a polyfunctional monomer according to the mass ratio of (40-50): (10-20) a mixture.
Furthermore, in order to ensure the adhesive force, water resistance, heat resistance, high and low temperature resistance and weather resistance of the cured film, the monomer is preferably dicyclopentanyl methacrylate and tetrahydrofurfuryl acrylate according to the mass ratio of (30-40): (8-12).
The invention particularly preferably uses dicyclopentanyl methacrylate as EM93 of Changxing special materials (Zhuhai) limited, and tetrahydrofurfuryl acrylate as EM214 of Changxing special materials (Zhuhai) limited.
In order to ensure the curing speed of the dispensing coating and simultaneously ensure the high crosslinking density of the cured film and improve the wear resistance, chemical resistance and water resistance of the cured film, the multifunctional monomer is preferably a hexafunctional monomer, and the hexafunctional monomer is preferably 6 Moire caprolactone-modified dipentaerythritol hexaacrylate, and more preferably the 6 Moire caprolactone-modified dipentaerythritol hexaacrylate is EM2696 of Changxing special materials (Zhuhai) Co.
By optimizing the composition of the monomer, the viscosity of the coating is reduced, the speed is increased, and the construction performance of the coating is improved while the performance of the cured film is ensured.
In order to reduce the liquid surface tension of the dispensing coating, so that the dispensing coating has a very good shrink-resistant effect, improves leveling property and promotes fluidity, the preferred wetting agent of the invention is an organosilicon wetting agent, and the particularly preferred organosilicon wetting agent is a Germany Di high TEGO Wet 270 substrate wetting agent.
In order to improve the adhesion of the cured film to the inorganic substrate, the adhesion promoter is preferably a silane coupling agent, and the adhesion promoter is preferably a silane coupling agent with a methoxy methacrylate functional group, further preferably gamma-glycidyl ether propyl trimethoxysilane containing one epoxy organic active group and one trimethoxysilane inorganic active organic difunctional group, and particularly preferably a us-based dow corning silane coupling agent Z-6030.
The preferred anti-settling agent of the invention is fumed silica white carbon black, and further preferred is winning nanometer hydrophobic silica white AEROSIL R972 silica powder.
In order to prevent the generation of microbubbles and pinholes in the coating, the defoamer of the present invention is preferably an acrylate defoamer, and further preferably a silicone-free foam breaking polymer solution of germany di-high TEGO 920.
The initiator is preferably a radical initiator, and further preferably at least one of 2,4, 6-trimethylbenzoyl-diphenylphosphine oxide TPO, 1-hydroxy-cyclohexyl-phenyl ketone 184, and further preferably a mixture of 2,4, 6-trimethylbenzoyl-diphenylphosphine oxide TPO and 1-hydroxy-cyclohexyl-phenyl ketone 184, and the mass ratio of 2,4, 6-trimethylbenzoyl-diphenylphosphine oxide TPO to 1-hydroxy-cyclohexyl-phenyl ketone 184 is 3:5.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of embodiments of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
The epoxy polysiloxane acrylate oligomers in the examples and comparative examples of the present invention were prepared as follows, unless otherwise specified:
100mL of toluene and N, N-dimethylbenzylamine (the added mass is 0.1 percent of the mass of the epoxy polysiloxane) are mixed, 1mol of epoxy polysiloxane, 1mol of acrylic acid and p-hydroxyanisole (the added mass is 0.1 percent of the mass of the epoxy polysiloxane) are added for reaction for 6 hours at 100-110 ℃, the acid value and the epoxy conversion rate are measured to be about 90 percent, and the solvent and the unreacted acrylic acid are removed by reduced pressure distillation, so that an epoxy polysiloxane acrylate oligomer is obtained and is marked as self-made UV resin I; wherein the epoxy polysiloxane Hubei long wins four sea new material Co.Ltd.
Example 1
The embodiment provides an ultraviolet light curing dispensing coating for a light-emitting diode lattice module, which comprises the following components in parts by weight:
example 2
The embodiment provides an ultraviolet light curing dispensing coating for a light-emitting diode lattice module, which comprises the following components in parts by weight:
example 3
The embodiment provides an ultraviolet light curing dispensing coating for a light-emitting diode lattice module, which comprises the following components in parts by weight:
example 4
The embodiment provides an ultraviolet light curing dispensing coating for a light-emitting diode lattice module, which comprises the following components in parts by weight:
example 5
The embodiment provides an ultraviolet light curing dispensing coating for a light-emitting diode lattice module, which comprises the following components in parts by weight:
example 6
The embodiment provides an ultraviolet light curing dispensing coating for a light-emitting diode lattice module, which comprises the following components in parts by weight:
comparative example 1
This comparative example differs from example 1 in that silicone modified urethane acrylate 856, a new material of han-hept, guangzhou, was used instead of homemade UV resin i.
Comparative example 2
The difference between this comparative example and example 1 is that the homemade UV resin I was replaced with a silicone resin RE-620 from the New Xiyinon New Material Co., ltd.
Comparative example 3
This comparative example differs from example 1 in that the home-made UV resin i was replaced with taiwan long-coming ethercure 6145-100 hexafunctional urethane acrylate.
Comparative example 4
The difference between this comparative example and example 1 is that homemade UV resin II was used instead of homemade UV resin I, and homemade UV resin II was prepared as follows:
100mL of toluene and N, N-dimethylbenzylamine (the added mass is 0.1% of the mass of the epoxy polysiloxane) are mixed, 1mol of epoxy polysiloxane and 1mol of acrylic acid are added to react with (the added mass is 0.1% of the mass of the epoxy polysiloxane) p-hydroxyanisole for 6 hours at 100-110 ℃, the acid value and the epoxy conversion rate are measured to be about 90%, and the solvent and the unreacted acrylic acid are removed by reduced pressure distillation, so that an epoxy polysiloxane acrylate oligomer is obtained and is marked as self-made UV resin II; wherein the epoxy polysiloxane is SH-023-4 of Hubei Long Shengshi New Material Co., ltd.
Comparative example 5
The comparative example provides an ultraviolet light curing dispensing coating for a light-emitting diode lattice module, which comprises the following components in parts by weight:
comparative example 6
The comparative example provides an ultraviolet light curing dispensing coating for a light-emitting diode lattice module, which comprises the following components in parts by weight:
comparative example 7
The comparative example provides an ultraviolet light curing dispensing coating for a light-emitting diode lattice module, which comprises the following components in parts by weight:
comparative example 8
The comparative example provides an ultraviolet light curing dispensing coating for a light-emitting diode lattice module, which comprises the following components in parts by weight:
comparative example 9
The comparative example provides an ultraviolet light curing dispensing coating for a light-emitting diode lattice module, which comprises the following components in parts by weight:
comparative example 10
The comparative example provides an ultraviolet light curing dispensing coating for a light-emitting diode lattice module, which comprises the following components in parts by weight:
comparative example 11
This comparative example differs from example 1 in that R972 was replaced with Nanjing Tianshi wax powder PTFE-1005.
Comparative example 12
The difference between this comparative example and example 1 is that Z-6030 was replaced with CD9051 from the company Sadama USA.
Comparative example 13
The LED lattice module does not carry out dispensing treatment.
Application of
According to the formula, the components of the embodiments 1-6 and the comparative examples 1-12 are uniformly mixed to obtain the ultraviolet light curing dispensing coating for the LED dot matrix module, the dispensing coating obtained in the embodiments 1-6 and the comparative examples 1-12 is dispensed into the array eyes of the LED dot matrix module by a dispensing machine in a dispensing mode, the dispensing in the array eyes and the LED lamp bead module form a horizontal plane, the ultraviolet light curing is carried out to obtain a flat LED dot matrix module, the following performance test is carried out, and the performance test results are shown in Table 1:
1. adhesion test: the test was performed according to the standard GB/T4893.4-2013 adhesion cross cut assay.
2. High and low temperature cycle test for seven days: according to the standard GB4893.7-2013 furniture surface paint film cold and heat resistance temperature difference measuring method.
3. Weather resistance test: the test was carried out according to the standard GBT4893.1-1985 furniture surface paint film liquid resistance assay.
4. Light transmittance test: the light transmittance was determined by measuring the refractive index of the paint with an abbe refractometer. The higher the refractive index, the better the light transmission of the coating.
5. And observing whether the light-emitting diode lattice module generates light wave interference fringes and light wave diffraction fringe phenomena in a visual observation mode so as to achieve the anti-dizziness effect.
TABLE 1
From the data, the adhesive coating prepared by the embodiments of the invention has excellent adhesive force, high and low temperature resistance, weather resistance and light transmittance after being used for the LED lattice module, and the problems of light wave interference fringes and light wave diffraction fringes generated on the surface of the LED lattice module are solved without influencing the display function and the service life of the LED display screen.
Compared with the embodiment 1, the adhesive coating provided in the comparative example 1 replaces self-made UV resin I with organosilicon modified polyurethane acrylate 856 of Guangzhou Han Hepan New material Co., ltd, the refractive index of the prepared cured film is obviously reduced, and meanwhile, the adhesive force is also reduced to some extent, so that the display function and the service life of the LED display screen are affected.
Compared with the embodiment 1, the dispensing coating provided in the comparative example 2 uses the organic silicon resin RE-620 of the new Xiyun material science and technology Co., ltd to replace the self-made UV resin I, the refractive index of the prepared cured film is obviously reduced, and meanwhile, the adhesive force is also reduced, so that the display function and the service life of the LED display screen are affected.
Compared with the embodiment 1, the dispensing coating provided in the comparative example 3 uses taiwan long Etercure6145-100 six-functionality polyurethane acrylate to replace self-made UV resin I, and the prepared cured film has the defects of overlarge shrinkage and poor adhesive force, so that the service life of the LED display screen is influenced.
Compared with the example 1, the adhesive coating provided in the comparative example 4 replaces W1000-A of Hubei long-acting four-sea new material stock Co., ltd with SH-023-4 of Hubei long-acting four-sea new material stock Co., ltd in the self-made UV resin preparation process, and the prepared cured film has poor adhesive force and poor light transmittance.
Compared with the embodiment 1, the dispensing coating provided in the comparative example 5 increases the addition amount of the self-made UV resin I, and the prepared cured film has overlarge viscosity, is unfavorable for construction, affects the defoaming property of dispensing, and directly affects the performances of light transmittance, cold and hot circulation and the like of a paint film due to the existence of small bubbles in curing.
Compared with the example 1, the dispensing coating provided in the comparative example 6 reduces the addition amount of the self-made UV resin I, and the prepared cured film has too little resin content which can affect the construction viscosity, the adhesive force and the shrinkage.
Compared with the example 1, the adhesive dispensing coating provided in the comparative example 7 only adopts EM93 as a monofunctional monomer, and the prepared cured film is hard, has large shrinkage, has an effect on adhesive force and also has an effect on refractive index.
The spot-size coating provided in comparative example 8 was slower in curing speed and poorer in water resistance of the prepared cured film by using only EM214 as the monofunctional monomer as compared with example 1.
Compared with the example 1, the adhesive coating provided in the comparative example 9 has obviously reduced adhesive force of the prepared cured film by only using the EM215 as the monofunctional monomer, and has slightly reduced weather resistance and refractive index.
The adhesive coating provided in comparative example 10 replaced EM2696 with the multifunctional monomer EM231, and the prepared cured film had significantly reduced adhesion, as compared to example 1.
The adhesive coating provided in comparative example 11 replaced R972 with Nanjing Tianshi wax powder PTFE-1005, and the adhesive force of the prepared cured film was reduced compared with example 1.
The cured film prepared with the spot-size coating provided in comparative example 12 replaced Z-6030 with CD9051 from sandomax corporation in the united states had significantly poorer weatherability than example 1.
With the above-described preferred embodiments according to the present invention as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present invention. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.
Claims (6)
1. The ultraviolet light curing dispensing coating for the LED lattice module is characterized by comprising the following components in parts by weight:
30-50 parts of epoxy polysiloxane acrylate oligomer;
35-65 parts of monomer;
0.1-0.5 parts of a wetting agent;
2-5 parts of an adhesion promoter;
0.1-0.5 part of anti-settling agent;
0.1-0.5 part of defoaming agent;
5-8 parts of an initiator;
the epoxy polysiloxane acrylate oligomer is prepared according to the following method: mixing toluene and N, N-dimethylbenzylamine, adding epoxy polysiloxane, acrylic acid and p-hydroxyanisole, reacting for 6 hours at 100-110 ℃, and distilling under reduced pressure to remove solvent and unreacted acrylic acid, thereby obtaining epoxy polysiloxane acrylate oligomer;
the monomer is a monofunctional monomer and a polyfunctional monomer according to the mass ratio of (40-50): (10-20);
the monofunctional monomer is dicyclopentanyl methacrylate and tetrahydrofurfuryl acrylate according to the mass ratio of (30-40): (8-12);
the multifunctional monomer is 6 Mohr caprolactone modified dipentaerythritol hexaacrylate.
2. The led matrix module uv curable spot-size coating of claim 1, wherein the wetting agent is an organosilicon wetting agent.
3. The uv curable spot-size coating for a led matrix module of claim 1, wherein the adhesion promoter is a silane coupling agent.
4. The led matrix module uv curable spot-size coating of claim 1, wherein the anti-settling agent is fumed silica.
5. The ultraviolet light-curable spot-size coating for a light-emitting diode matrix module according to claim 1, wherein the defoamer is an acrylate defoamer.
6. The led matrix module uv curable spot-size coating of claim 1, wherein the initiator is a free radical initiator.
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| KR20220098420A (en) * | 2021-01-04 | 2022-07-12 | 박평래 | LED UV curing topcoat for automobile repair |
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| CN104191803A (en) * | 2014-08-29 | 2014-12-10 | 武汉大学 | Preparation method of graphene/substrate composite conducting material |
| CN107722188A (en) * | 2017-11-15 | 2018-02-23 | 上海多睿电子科技有限公司 | 3D printing solidifies super hydrophobic material, composition and preparation method thereof with ultraviolet light |
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