CN115505327B - Anti-dazzle coating, anti-dazzle film and preparation method - Google Patents
Anti-dazzle coating, anti-dazzle film and preparation method Download PDFInfo
- Publication number
- CN115505327B CN115505327B CN202211465683.9A CN202211465683A CN115505327B CN 115505327 B CN115505327 B CN 115505327B CN 202211465683 A CN202211465683 A CN 202211465683A CN 115505327 B CN115505327 B CN 115505327B
- Authority
- CN
- China
- Prior art keywords
- film
- antiglare
- organic
- coating
- parts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/14—Polyurethanes having carbon-to-carbon unsaturated 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
- 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
- C09D7/65—Additives macromolecular
-
- 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
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
- G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
- G02B5/3041—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks
- G02B5/305—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks including organic materials, e.g. polymeric layers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Abstract
The embodiment of the application provides an anti-dazzle coating, an anti-dazzle film and a preparation method, and relates to the field of polarizer functional films. The anti-dazzle coating comprises the following components in parts by weight: 20-40 parts of polyurethane acrylate oligomer, 1-5 parts of organic-inorganic composite microspheres, 1-2 parts of photoinitiator and 40-90 parts of organic solvent; the functionality of polyurethane acrylate oligomer is 3-12, the molecular weight is 1000-3000, the particle diameter D50 of the organic-inorganic composite microsphere is 2-5 mu m, and the refractive index is 1.49-1.59. The antiglare film comprises a base film and an antiglare layer attached to the surface of the base film, wherein the antiglare layer is formed by coating and photo-curing the antiglare coating. According to the embodiment of the application, the anti-dazzle layer is formed by matching the organic-inorganic composite microspheres with the acrylate resin with proper shrinkage, so that the problem of tension lines is solved under the condition that the performance and the appearance of the high-definition anti-dazzle film are not affected.
Description
Technical Field
The application relates to the field of polarizer functional films, in particular to an anti-dazzle coating, an anti-dazzle film and a preparation method.
Background
Along with the rapid development of liquid crystal display screens, the display resolution of the screen is higher and the thickness is thinner, the requirements on each component structure of the liquid crystal display screen are higher and higher, and the polaroid is used as a necessary structure for forming the liquid crystal display screen, so that the requirements on the surface functional film of the polaroid are higher and higher, and the surface functional film of the polaroid is mainly an anti-dazzle film. Along with the demand of thickness thinning of the polaroid, the thickness of the base material of the surface functional film is also continuously reduced, and the thickness of the base material of the anti-dazzle film is reduced to 25 mu m or even 12 mu m at present, which puts higher demands on the coating of the high-definition anti-dazzle functional coating.
At present, a high-definition anti-dazzle functional coating is mainly prepared by adopting a coating added with organic microspheres and inorganic particles, but in the roll-to-roll processing process of coating the type of coating on the upper surface of a thin base film, serious tension line lines can be formed due to inconsistent volume shrinkage of MD (Machine Direction, coil tension direction) and TD (transverse direction, coil width direction) in the curing process, so that the surface of the anti-dazzle film has light and dark alternate stripes.
Patent JP6907161B2 discloses an antiglare film comprising a light-transmitting substrate and an antiglare layer provided on the light-transmitting substrate and having an uneven surface, wherein the light-transmitting substrate is a cellulose-acylated substrate, the antiglare layer is formed by coating a paint containing organic microspheres, inorganic nanoparticles and a binder resin having hydroxyl groups, the inorganic nanoparticles are spherical inorganic oxide particles having a hydrophobic surface and an average particle diameter of 1nm to 100nm, and the organic microspheres are spherical organic particles having a hydrophilic surface and an average particle diameter of 1 μm to 5 μm. The application forms an antiglare layer by adding organic microspheres and inorganic nanoparticles to a hard coat layer, but this method also suffers from tension line problems when processing an antiglare layer on a thin substrate.
Disclosure of Invention
The embodiment of the application aims to provide an anti-dazzle coating, an anti-dazzle film and a preparation method, wherein an anti-dazzle layer is formed by using organic-inorganic composite microspheres and acrylate resin with proper shrinkage, so that the problem of tension lines is solved under the condition that the performance and the appearance of a high-definition anti-dazzle film are not affected.
In a first aspect, an embodiment of the present application provides an antiglare coating, including, in parts by weight:
20-40 parts of polyurethane acrylate oligomer;
1-5 parts of organic-inorganic composite microspheres;
1-2 parts of a photoinitiator;
40-90 parts of an organic solvent;
the functionality of the polyurethane acrylate oligomer is 3-12, the molecular weight is 1000-3000, the particle size D50 of the organic-inorganic composite microsphere (the particle size corresponding to the cumulative particle size distribution percentage of the organic-inorganic composite microsphere reaching 50%) is 2-5 mu m, and the refractive index is 1.49-1.59.
In the technical scheme, when the anti-dazzle coating film is irradiated by ultraviolet light, the polyurethane acrylate oligomer in the anti-dazzle coating film can be subjected to rapid free radical polymerization reaction, namely cross-linking and curing, and compared with other resins, the specific polyurethane acrylate oligomer has smaller volume shrinkage when being subjected to resin polymerization, and can reduce the volume shrinkage in the TD direction of the coating film under the condition of tension pulling; in addition, the organic-inorganic composite microsphere with specific micron order can effectively relieve the thermal shrinkage of the coating film, and the optical property of the coating film is not affected. Therefore, the anti-dazzle coating provided by the embodiment of the application is added with the organic-inorganic composite microsphere and is matched with the acrylic resin with lower volume shrinkage, the volume shrinkage of the coating film in the TD direction is reduced, the difference between the volume shrinkage of the coating film in the TD direction and the volume shrinkage of the coating film in the MD direction are reduced to be nearly identical, and especially, the anti-dazzle coating can solve the problem of tension lines in the MD direction when being coated on a thin base film without affecting the optical performance, the hardness, the wear resistance and other physical properties of the coating film.
In one possible implementation, the weight ratio of urethane acrylate oligomer to organic-inorganic composite microsphere is 6-30:1.
In the technical scheme, the weight ratio of the polyurethane acrylate oligomer to the organic-inorganic composite microsphere is controlled within a certain range, so that the tension line problem can be thoroughly solved on the premise of ensuring the optical performance and the physical performance of a coating film; if the weight ratio of the urethane acrylate oligomer to the organic-inorganic composite microsphere is too large, the haze is low, and if the weight ratio is too small, the haze is high and the problem of tension lines is serious.
In one possible implementation manner, the organic matter in the organic-inorganic composite microsphere is at least one of PS (Polystyrene), PMMA (polymethyl methacrylate ), and the inorganic matter is an inorganic oxide.
In the technical scheme, the organic-inorganic composite microspheres can play a supporting role of inorganic particles to reduce volume shrinkage when the coating film is solidified, and can also control the addition amount of inorganic matters to reduce the influence on the optical performance of the coating film.
In one possible implementation mode, the components further comprise 0.5-2.5 parts of dispersing agent and 0.5-5 parts of leveling agent in parts by weight; the dispersing agent is at least one of modified polyacrylate polymer and modified polyurethane polymer, and the leveling agent is at least one of modified polysiloxane and fluorinated acrylate.
In a second aspect, an embodiment of the present application provides a method for preparing the antiglare coating according to the first aspect, where the antiglare coating is mainly obtained by uniformly mixing the raw materials of the components.
In one possible implementation, it includes the steps of:
adding polyurethane acrylate oligomer into an organic solvent, uniformly stirring, and adding a photoinitiator while stirring to prepare clear liquid;
adding a dispersing agent into an organic solvent, carrying out uniform mixing, adding organic-inorganic composite microspheres, and continuously carrying out uniform mixing to prepare slurry;
and (3) homogenizing and mixing the clear liquid and the slurry, adding a leveling agent, and continuing homogenizing and mixing.
In the technical scheme, clear liquid and slurry are prepared respectively, and then mixed, so that all the components can be uniformly mixed to the greatest extent to form the anti-dazzle coating.
In a third aspect, embodiments of the present application provide an antiglare film comprising a base film and an antiglare layer attached to a surface of the base film, the antiglare layer being formed by coating with the antiglare coating provided in the first aspect and photocuring.
In the technical scheme, the anti-dazzle film can meet the performance and appearance requirements of the high-definition anti-dazzle film, and the problem of tension lines is avoided.
In one possible implementation, the base film is a TAC (Triacetyl Cellulose, cellulose triacetate) film, PMMA (polymethyl methacrylate ) film or PC (Polycarbonate) film, the base film thickness being 12-40 μm; the thickness of the antiglare layer is 3-6 μm.
In the technical scheme, the antiglare film formed by the base film and the antiglare layer meets the requirement of thinning the functional film.
In a fourth aspect, an embodiment of the present application provides a method for preparing an antiglare film according to the third aspect, wherein the antiglare coating is coated on a base film to form a film, and the film is cured and crosslinked by ultraviolet irradiation to form an antiglare layer.
In one possible implementation, the ultraviolet irradiation energy is 400-600 Mj/cm;
and/or coating in a roll-to-roll manner, with a tension set in the range of 60-120N.
In the technical scheme, the ultraviolet irradiation energy is controlled to a certain extent, so that the coating film can be rapidly solidified, and the excessive heat shrinkage caused by excessive heat is avoided; the tension is controlled to a certain extent, so that the requirement of flat coating can be met, and overlarge volume shrinkage in the TD direction caused by overlarge tension is avoided.
Detailed Description
The inventors found in the course of studying the present application that: the anti-dazzle functional coating film carries out rapid free radical polymerization reaction when being irradiated by ultraviolet light, and on one hand, the resin component in the coating film can generate volume shrinkage when being polymerized; on the other hand, when ultraviolet light irradiates, a large amount of heat is generated, so that the coating film generates heat shrinkage, and although partial heat can be taken away by adopting a water cooling roller during photo-curing, the heat shrinkage still exists. The thin base film has insufficient supporting property, in the roll-to-roll coating process, the volume shrinkage of the coating film in the MD direction is small in the curing process due to the tension pulling of the coating film in the MD direction, the TD direction is in a loose state, the volume shrinkage of the coating film in the TD direction is large, the shrinkage rate of the coating film in the MD direction is different from that of the coating film in the TD direction, tension lines in the MD direction are formed, the bright and dark alternate stripes in the MD direction are formed, and the thinner the base film is, the thicker the coating film is, and the tension lines are more serious.
Since the organic microspheres of the same specification have lower density and lower strength than the inorganic microspheres, the addition of the organic microspheres in the coating film causes more serious volume shrinkage during the photo-curing process than the addition of the inorganic microspheres. If the nano-sized inorganic particles are added, the volume shrinkage of the coating film cannot be effectively relieved due to the excessively small volume of the inorganic particles, and if the micro-sized inorganic particles are added, the optical properties of the coating film are affected.
Therefore, the inventors have intended redesign of the antiglare coating composition so that the difference in volume shrinkage of the coating film MD and TD is reduced, solving the MD direction tension line.
In order to make the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below. The specific conditions are not noted in the examples and are carried out according to conventional conditions or conditions recommended by the manufacturer. The reagents or apparatus used were conventional products commercially available without the manufacturer's attention.
The antiglare coating, antiglare film and method of preparation according to the embodiments of the present application are described in detail below.
The embodiment of the application provides an anti-dazzle coating, which comprises the following components in parts by weight: 20-40 parts of polyurethane acrylate oligomer, 1-5 parts of organic-inorganic composite microspheres, 1-2 parts of photoinitiator, 0.5-2.5 parts of dispersing agent, 0.5-5 parts of leveling agent and 40-90 parts of organic solvent; optionally, the antiglare coating comprises the following components in parts by weight: 25-35 parts of polyurethane acrylate oligomer, 1-3 parts of organic-inorganic composite microspheres, 1-2 parts of photoinitiator, 0.5-1.5 parts of dispersing agent, 3-5 parts of leveling agent and 40-90 parts of organic solvent.
Wherein the functionality of the polyurethane acrylic ester oligomer is 3-12, optionally 5-9, and the molecular weight is 1000-3000.
The organic-inorganic composite microsphere is a single spherical particle, the particle diameter D50 is 2-5 mu m, and the refractive index is 1.49-1.59. The organic matter in the organic-inorganic composite microsphere is at least one of PS (polystyrene) and PMMA (polymethyl methacrylate), and the inorganic matter is inorganic oxide. The organic-inorganic composite microsphere may be, for example, PS-SiO 2 Composite microsphere, PS-PMMA-SiO 2 Composite microspheres, and the like. The organic-inorganic composite microsphere is a commercial product and is generally prepared by adding nano inorganic particles during emulsion polymerization of organic matters, wherein the content of the inorganic matters is generally determined according to the refractive index requirement of the composite microsphere.
The weight ratio of the polyurethane acrylate oligomer to the organic-inorganic composite microsphere is 6-30:1.
The photoinitiator refers to a compound which initiates crosslinking and curing of the urethane acrylate oligomer in the ultraviolet light region, and is exemplified by a photoinitiator PI184, a photoinitiator TPO, a photoinitiator 2959, and the like.
The dispersant is at least one of a high molecular weight modified polyacrylate polymer dispersant and a modified polyurethane polymer dispersant. Illustratively, the dispersants are Efka PX 4310, efka PX 4787, efka PU 4063, and the like.
The leveling agent is at least one of a modified polysiloxane leveling agent and a fluorinated acrylate leveling agent. Illustratively, the leveling agents are BYK3550, BYK3710, efka FL 3600, and the like.
The organic solvent is common organic solvent such as ethyl acetate, butanone, butyl acetate, propylene glycol methyl ether, methyl isobutyl ketone, etc.
The embodiment of the application also provides a preparation method of the anti-dazzle coating, which is mainly obtained by uniformly mixing the raw materials of the components, and specifically comprises the following steps:
s1, preparing clear liquid: 20-40 parts by weight of urethane acrylate oligomer is added into 20-60 parts by weight of organic solvent, uniformly stirred, and then 1-2 parts by weight of photoinitiator is added while stirring, and the step can be carried out in a stirrer and stirring is carried out at 200-800 rpm. Preparing to obtain clear liquid.
S2, preparing slurry: adding 0.5-2.5 parts by weight of dispersing agent into 20-30 parts by weight of organic solvent, homogenizing and mixing, slowly adding 1-5 parts by weight of organic-inorganic composite microspheres, and continuing homogenizing and mixing, wherein the step can be carried out in a homogenizer at the rotating speed of 1000-3000 rpm, and the temperature is kept at room temperature during stirring to prepare slurry.
S3, mixing clear liquid and slurry: the clear liquid and the slurry are evenly mixed, 0.5 to 5 weight parts of flatting agent is added, and the steps of continuously evenly mixing can be carried out in a homogenizer at the rotating speed of 1000 to 3000 revolutions per minute.
The whole preparation and charging process is carried out under a yellow lamp, and the prepared anti-dazzle coating is immediately stored in a light-proof and sealed manner.
The embodiment of the application also provides an antiglare film, which comprises a base film and an antiglare layer attached to the surface of the base film, wherein the base film is a thin transparent base film, such as a TAC film, a PMMA film or a PC film, and the thickness of the base film is 12-40 mu m; the antiglare layer is formed by adopting the antiglare coating and photo-curing, and the thickness of the antiglare layer is 3-6 mu m.
The embodiment of the application also provides a preparation method of the anti-dazzle film, which mainly comprises the steps of coating the anti-dazzle paint on a base film to form a film, and curing and crosslinking the film through ultraviolet irradiation to form an anti-dazzle layer.
The coating is usually roll-to-roll, and the coating mode can be micro-concave coating, slit coating and the like. The base film coated and formed is solidified by ultraviolet irradiation under the action of tension, the ultraviolet irradiation energy is 400-600Mj/cm, the UV lamp adopted for solidification can adopt an H lamp, and the H lamp is matched with a water-cooling steel roller for cooling; the tension of the base film in the ultraviolet irradiation section is set to be 60-120N.
The features and capabilities of the present application are described in further detail below in connection with the examples.
1. Test sample preparation
1. Preparation of materials
Resin component:
(1) urethane acrylate resin RHC002 (AICA, japan): 6 functionality, molecular weight 1500, solids content 100%;
(2) urethane acrylate resin T86 (nelwell): 15 functionality, molecular weight 3000, solid content 100%;
(3) epoxy resin ME-5101 (HMS): 4 functionality, molecular weight 4000, solids content 100%.
Microsphere additive:
(1) organic-inorganic composite microsphere RA-A (japan catalyst): PS-SiO 2 Composite microsphere, single particle size, d50=3.5 μm, refractive index 1.57;
(2) organic microspheres SSX-105 (ponding chemistry): PMMA-PS microsphere with particle diameter D50 of 5 μm and refractive index of 1.56;
(3) nano silica microsphere PL-3 (hibiscus chemistry): particle diameter D50 is 50nm, refractive index is 1.49;
(4) silica microsphere SIS030 (nano-micro): the particle diameter D50 was 3. Mu.m, and the refractive index was 1.49.
2. Preparation
Example 1
The embodiment provides an antiglare film, which is prepared by the following steps:
preparing clear liquid: will beResin compositionComponent (A):20 parts by weight of urethane acrylate resin RHC002 (AICA, japan) was added toFirst organic solvent:20 parts by weight of ethyl acetate +30 parts by weight of propylene glycol methyl ether were stirred at 500rpm for 30 minutes by using a stirrer, and added while stirringPhotoinitiator:1 part by weight of a photoinitiator PI184 (IGM), and stirred at 500rpm for 10 minutes to obtain a clear solution.
Preparing slurry: will beDispersing agent:1.5 parts by weight of dispersant Efka PX 4787 (Basf) added toSecond organic solvent Agent:24 parts by weight of butyl acetate, stirring in a homogenizer at 1000rpm for 10 minutes, andmicrosphere additive:3 parts by weight of organic-inorganic composite microspheres RA-A (Japanese catalyst) were slowly added and stirred at 2000rpm for 15 minutes, and the temperature was maintained at 23℃during the stirring to obtain a slurry.
Mixing the clear liquid and the slurry: adding the clear liquid into the slurry stirred by the homogenizer, and continuously stirring at 2000rpm for 30min; will beLeveling agent:0.5 part by weight of a leveling aid BYK3550 (BYK) is added, and stirring is continued for 10min, so that the anti-dazzle coating is obtained. The whole preparation process is carried out under a yellow lamp, and the obtained anti-dazzle coating is immediately sealed in a dark place.
And (3) coating: the anti-dazzle coating is coated on a roll-to-roll multifunctional slit coaterBase film: a 25 mu m TAC film is coated and formed into a film, and is cured and crosslinked by ultraviolet irradiation,ultraviolet lightThe irradiation energy was 500 Mj/cm.
Examples 2 to 4 and comparative examples 1 to 4, respectively, provided an antiglare film, their production methods were substantially the same as those of example 1, and specific production conditions of each example and comparative example were set as shown in table 1:
table 1 specific preparation conditions of each of examples and comparative examples
2. Test sample detection
(1) The anti-dazzle film thickness testing method comprises the following steps:
and using a micrometer to measure the thickness of the antiglare film, correcting and zeroing the instrument, then flatly placing the antiglare film on a test position, and then testing the thickness of the antiglare film by using the micrometer to measure the thickness of the antiglare film.
(2) The anti-dazzle film haze testing method comprises the following steps:
after blank calibration by using an NDH2000N Haze meter, the antiglare film was cut to a sample size of an appropriate size and placed in a sample chamber, and the Haze value (Haze) and total transmittance (T.T) were directly measured.
(3) The anti-dazzle film definition testing method comprises the following steps:
and (3) performing blank calibration by using a definition meter ICM-1T, cutting the antiglare film to a sample size with proper size, placing the sample size into a sample chamber, directly measuring the definition of 0.125mm/0.25mm/0.5mm/1mm/2mm, and summing up 5 definition values to obtain the total definition.
(4) Tension line: and attaching an OCA film to the black acrylic plate for reflecting light for observation and classification. Severe: tension lines can be observed within the angle range of 0-45 degrees of the visual angle (the included angle between the visual line and the vertical line of the observed surface); and (3) moderately: no tension line is observed in the angle range of 0-45 degrees, but tension line can be observed in the angle range of 45-90 degrees; the method is free of: no tension lines are observed at any angle of view.
(5) Flash point: and (3) attaching the anti-dazzle film sample to the display screens with different resolutions, and observing the condition of screen flickering points under a pure green picture.
The antiglare films of each example and comparative example were subjected to the above-described tests, and the test results are shown in table 2:
table 2 results of the tests of each of the examples and comparative examples
| Example 1 | Example 2 | Example 3 | Example 4 | Comparative example 1 | Comparative example 2 | Comparative example 3 | Comparative example 4 | |
| Total thickness/μm | 30 | 30 | 44 | 18 | 30 | 29 | 29 | 30 |
| Haze% | 30 | 15 | 40 | 5 | 30 | 16 | 15 | 32 |
| Definition% (total) | 200 | 283 | 164 | 397 | 194 | 278 | 278 | 96 |
| Flashing point | Without any means for | Without any means for | Without any means for | Without any means for | Without any means for | Without any means for | Without any means for | Has the following components |
| Tension wire | Without any means for | Without any means for | Without any means for | Without any means for | Heavy tension line | Moderate tension line | Heavy tension line | Tension-free wire |
From the results of tables 1 and 2, it is apparent that the antiglare film prepared by adding the organic microspheres and the nanoscale inorganic microspheres simultaneously in comparative example 1 has a severe tension line, and the antiglare film prepared by adding the organic microspheres and the microscale inorganic microspheres simultaneously in comparative example 4 has a very low definition and also has a flickering point. The analysis reason is that the organic microspheres and the nanoscale inorganic microspheres are added independently, and the inorganic microspheres have very small particle size, so that only one percent of the organic microspheres have very limited supporting effect and can not help the organic microspheres to reduce volume shrinkage; the addition of the micron-sized inorganic microspheres can reduce volume shrinkage through supporting, but the optical properties such as film clarity, transparency and the like are greatly reduced and flickering points are caused due to the excessively large particle size of the inorganic microspheres. In examples 1-4, the organic-inorganic composite microspheres were added, and the volume shrinkage of the microspheres during resin curing was reduced by introducing inorganic materials.
The comparative example 2 and the comparative example 3 adopt other resin components (polyurethane acrylate oligomer with overlarge functionality and epoxy resin) and organic-inorganic composite microspheres for matching, and the prepared anti-dazzle film still has the problem of moderate or severe tension lines, so that the volume shrinkage of a coating film in the TD direction can be reduced only by adopting the matching of the polyurethane acrylate oligomer and the organic-inorganic composite microspheres, so that the shrinkage in the TD direction and the MD direction is close, no MD direction tension lines (lines) are generated, and the appearance is excellent. In addition, the polyester acrylic resin with the functionality of 3-12 and the organic-inorganic composite microsphere are matched for use, and the prepared anti-dazzle film has the problems of poor hardness and wear resistance and cannot be practically used.
In summary, the antiglare coating, the antiglare film and the preparation method of the embodiment of the application solve the problem of tension lines under the condition that the performance and the appearance of the high-definition antiglare film are not affected by using the organic-inorganic composite microspheres to form the antiglare layer together with the acrylate resin with proper shrinkage.
The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and variations will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (9)
1. The anti-dazzle coating is characterized by comprising the following components in parts by weight:
20-40 parts of polyurethane acrylate oligomer;
1-5 parts of organic-inorganic composite microspheres;
1-2 parts of a photoinitiator;
40-90 parts of an organic solvent;
the functionality of the polyurethane acrylic ester oligomer is 3-12, the molecular weight is 1000-3000, the organic-inorganic composite microsphere is prepared by adding nano inorganic particles during emulsion polymerization of organic matters, the particle size D50 of the organic-inorganic composite microsphere is 2-5 mu m, and the refractive index is 1.49-1.59; the weight ratio of the polyurethane acrylate oligomer to the organic-inorganic composite microsphere is 6-30:1.
2. The antiglare coating according to claim 1, wherein the organic substance in the organic-inorganic composite microsphere is at least one of PS and PMMA, and the inorganic substance is an inorganic oxide.
3. The antiglare coating according to claim 1, further comprising 0.5 to 2.5 parts by weight of a dispersant and 0.5 to 5 parts by weight of a leveling agent; the dispersing agent is at least one of modified polyacrylate polymer and modified polyurethane polymer, and the leveling agent is at least one of modified polysiloxane and fluorinated acrylate.
4. The method for producing an antiglare coating according to any one of claims 1 to 3, wherein the antiglare coating is obtained by uniformly mixing the raw materials of the respective components.
5. The method for producing an antiglare coating according to claim 4, comprising the steps of:
adding polyurethane acrylate oligomer into an organic solvent, uniformly stirring, and adding a photoinitiator while stirring to prepare clear liquid;
adding a dispersing agent into an organic solvent, carrying out uniform mixing, adding organic-inorganic composite microspheres, and continuously carrying out uniform mixing to prepare slurry;
and (3) homogenizing and mixing the clear liquid and the slurry, adding a leveling agent, and continuing homogenizing and mixing.
6. An antiglare film comprising a base film and an antiglare layer attached to a surface of the base film, the antiglare layer being formed by coating with the antiglare coating material according to any one of claims 1 to 3 and photocuring.
7. The antiglare film according to claim 6, wherein the base film is a TAC film, a PMMA film, or a PC film, and the base film has a thickness of 12 to 40 μm; the thickness of the antiglare layer is 3-6 μm.
8. The method for producing an antiglare film according to claim 6, wherein the antiglare coating is applied onto the base film to form a film, and the film is cured and crosslinked by ultraviolet irradiation to form an antiglare layer.
9. The method for producing an antiglare film according to claim 8, wherein the ultraviolet irradiation energy is 400 to 600 Mj/cm;
and/or coating in a roll-to-roll manner, with a tension set in the range of 60-120N.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211465683.9A CN115505327B (en) | 2022-11-22 | 2022-11-22 | Anti-dazzle coating, anti-dazzle film and preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211465683.9A CN115505327B (en) | 2022-11-22 | 2022-11-22 | Anti-dazzle coating, anti-dazzle film and preparation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115505327A CN115505327A (en) | 2022-12-23 |
| CN115505327B true CN115505327B (en) | 2023-08-15 |
Family
ID=84513895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211465683.9A Active CN115505327B (en) | 2022-11-22 | 2022-11-22 | Anti-dazzle coating, anti-dazzle film and preparation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115505327B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117625035B (en) * | 2024-01-26 | 2024-04-12 | 广州申威新材料科技有限公司 | Anti-dazzle anti-reflection coating, composite film, preparation method and application |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004091724A (en) * | 2002-09-03 | 2004-03-25 | Kawamura Inst Of Chem Res | Organic/inorganic composite and method for producing the same |
| CN1558824A (en) * | 2001-09-25 | 2004-12-29 | ��ʿ��Ƭ��ʽ���� | Hard coat film, base on which hard coat film is formed, image display having them |
| CN1616989A (en) * | 2003-11-11 | 2005-05-18 | 琳得科株式会社 | Film for optical applications |
| CN101052681A (en) * | 2004-11-08 | 2007-10-10 | 三菱化学株式会社 | Radiation curable composition and curing product thereof, and laminate including the same |
| CN101235244A (en) * | 2007-01-26 | 2008-08-06 | 东友精细化工有限公司 | Dazzling-proof hard coating material and high hardness hard coating film using same |
| CN101354454A (en) * | 2007-02-14 | 2009-01-28 | 索尼株式会社 | Anti-glare film, method for manufacturing the same, and display device using the same |
| CN103998953A (en) * | 2011-12-26 | 2014-08-20 | 大日本印刷株式会社 | Anti-glare film, polarizing plate and image display device |
| CN104115039A (en) * | 2011-09-27 | 2014-10-22 | 日本制纸株式会社 | Anti-glare hard coat film |
| CN106632769A (en) * | 2016-10-10 | 2017-05-10 | 长春工业大学 | A preparing method of micron monodisperse organic/inorganic hybrid polymer microspheres |
| JP2021031588A (en) * | 2019-08-23 | 2021-03-01 | 中国塗料株式会社 | Photocurable resin composition, substrate with cured coating film, and method for producing the same |
| CN112876899A (en) * | 2021-02-05 | 2021-06-01 | 江南大学 | Method for reducing volume shrinkage of photocuring coating by using hollow/porous elastic microspheres |
| CN114806351A (en) * | 2022-04-18 | 2022-07-29 | 张家港康得新光电材料有限公司 | Anti-dazzle composition, anti-dazzle film, preparation method and application thereof |
| CN114958282A (en) * | 2022-05-25 | 2022-08-30 | 壹成理化合成材料(东莞)有限公司 | Anti-dazzle high-transmittance ultraviolet curing adhesive |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113667393B (en) * | 2021-08-31 | 2022-07-29 | 武汉中科先进材料科技有限公司 | Anti-glare organic-inorganic hybrid antifogging coating and preparation thereof |
-
2022
- 2022-11-22 CN CN202211465683.9A patent/CN115505327B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1558824A (en) * | 2001-09-25 | 2004-12-29 | ��ʿ��Ƭ��ʽ���� | Hard coat film, base on which hard coat film is formed, image display having them |
| JP2004091724A (en) * | 2002-09-03 | 2004-03-25 | Kawamura Inst Of Chem Res | Organic/inorganic composite and method for producing the same |
| CN1616989A (en) * | 2003-11-11 | 2005-05-18 | 琳得科株式会社 | Film for optical applications |
| CN101052681A (en) * | 2004-11-08 | 2007-10-10 | 三菱化学株式会社 | Radiation curable composition and curing product thereof, and laminate including the same |
| CN101235244A (en) * | 2007-01-26 | 2008-08-06 | 东友精细化工有限公司 | Dazzling-proof hard coating material and high hardness hard coating film using same |
| CN101354454A (en) * | 2007-02-14 | 2009-01-28 | 索尼株式会社 | Anti-glare film, method for manufacturing the same, and display device using the same |
| CN104115039A (en) * | 2011-09-27 | 2014-10-22 | 日本制纸株式会社 | Anti-glare hard coat film |
| CN103998953A (en) * | 2011-12-26 | 2014-08-20 | 大日本印刷株式会社 | Anti-glare film, polarizing plate and image display device |
| CN106632769A (en) * | 2016-10-10 | 2017-05-10 | 长春工业大学 | A preparing method of micron monodisperse organic/inorganic hybrid polymer microspheres |
| JP2021031588A (en) * | 2019-08-23 | 2021-03-01 | 中国塗料株式会社 | Photocurable resin composition, substrate with cured coating film, and method for producing the same |
| CN112876899A (en) * | 2021-02-05 | 2021-06-01 | 江南大学 | Method for reducing volume shrinkage of photocuring coating by using hollow/porous elastic microspheres |
| CN114806351A (en) * | 2022-04-18 | 2022-07-29 | 张家港康得新光电材料有限公司 | Anti-dazzle composition, anti-dazzle film, preparation method and application thereof |
| CN114958282A (en) * | 2022-05-25 | 2022-08-30 | 壹成理化合成材料(东莞)有限公司 | Anti-dazzle high-transmittance ultraviolet curing adhesive |
Non-Patent Citations (1)
| Title |
|---|
| 吕少仿等.《绿色生化技术与小城镇可持续发展》.华中科技大学出版社,2017,50-54. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115505327A (en) | 2022-12-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102822701B (en) | The manufacture method of anti-glare film, anti-glare film, polaroid and image display device | |
| JP2018524641A (en) | Antireflection film and display device | |
| CN102782529B (en) | Anti-glare film, manufacturing method for same, polarizing plate and image display device | |
| TWI439419B (en) | Aggregate of spherical core shell type cerium oxide/polymeric hybrid nano particles and manufacturing method thereof | |
| CN115505327B (en) | Anti-dazzle coating, anti-dazzle film and preparation method | |
| US10845509B2 (en) | Low sparkle matte coats and methods of making | |
| CN101080442A (en) | Optical biaxially oriented polyester film | |
| CN102782530A (en) | Anti-glare film, manufacturing method for same, polarizing plate and image display device | |
| JP2018533065A (en) | Antireflection film and display device | |
| KR20190137917A (en) | Anti-reflection film, polarizer, and image display device | |
| CN105793739B (en) | The manufacturing method of antireflection film, polarizing film, cover glass, image display device and antireflection film | |
| TWI662088B (en) | Anti-glare film having low haze | |
| EP3489312B1 (en) | Composition for forming optical film, optical film and polarizing plate comprising same | |
| CN103069316A (en) | Black film, substrate provided with black film, image display device, black resin composition, and black material dispersion liquid | |
| WO2017029995A1 (en) | Optical film and image display device | |
| WO2007142293A1 (en) | Red coloring composition for color filter | |
| KR100785380B1 (en) | Method of manufacturing anti-glare film | |
| KR102425989B1 (en) | A red coloring agent composition for a color filter | |
| CN100456057C (en) | Colored composition and color filter using the same | |
| KR102537733B1 (en) | Laminated film and manufacturing method thereof | |
| KR20190129553A (en) | Anti-glare film and display apparatus | |
| WO2019208770A1 (en) | Light-diffusing molded body, film for transparent screen, and method for evaluating light-diffusing molded body | |
| JP2008222767A (en) | Active energy ray-curable composition and laminate using the same | |
| CN115491119B (en) | Anti-dazzle liquid, anti-dazzle film, preparation method of anti-dazzle film and polaroid | |
| CN113655554B (en) | Antiglare film and polarizing plate having the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |