CN112126299A - Projection screen optical coating for laser television and preparation method thereof - Google Patents
Projection screen optical coating for laser television and preparation method thereof Download PDFInfo
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- CN112126299A CN112126299A CN202011022713.XA CN202011022713A CN112126299A CN 112126299 A CN112126299 A CN 112126299A CN 202011022713 A CN202011022713 A CN 202011022713A CN 112126299 A CN112126299 A CN 112126299A
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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
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
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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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/004—Reflecting paints; Signal paints
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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
- 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
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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
- 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
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
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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
- 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
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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
- 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
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/54—Accessories
- G03B21/56—Projection screens
- G03B21/60—Projection screens characterised by the nature of the surface
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- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
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- 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
- C08K2201/002—Physical properties
- C08K2201/005—Additives being defined by their particle size in general
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/18—Spheres
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Overhead Projectors And Projection Screens (AREA)
Abstract
The invention belongs to the technical field of projection screen manufacturing, and particularly relates to a projection screen optical coating for a laser television and a preparation method thereof. The optical coating for the projection screen of the laser television comprises the following components in percentage by mass: 10-15% of reflective powder; 18-21% of barium sulfate; 15-20% of titanium dioxide; 1-5% of polymethyl methacrylate micro powder; 3-8% of spherical organic silicon powder; 3-8% of electroplated aluminum glass microspheres; 0.5-3% of sodium carboxymethylcellulose; 20-30% of water-based acrylic resin; 12-18% of water. The optical coating prepared by the invention is applied to the white screen, so that the brightness, the definition, the gain and the contrast of the white screen are close to those of a special laser composite screen, the light visible angle is large, and the application range of the white screen is greatly expanded.
Description
Technical Field
The invention belongs to the technical field of projection screen manufacturing, and particularly relates to a projection screen optical coating for a laser television and a preparation method thereof.
Background
The television technology has undergone three technical iterations of black and white television, color television, and digital television represented by liquid crystal television, PDP, OLED, and the like, while the laser television is the fourth generation. The laser television has the advantages of large width, high brightness, high resolution and high resolution, and a laser light source is adopted, and certainly, an anti-light gain screen is required to be matched with the laser light source.
The Fresnel or black grid two types of light-resistant gain screens are commonly matched with the laser television, and from the view of the efficiency of picture light reflection, the Fresnel light-resistant gain screen has the functions of visual enhancement and benefit improvement by utilizing an optical filter structure similar to a concentric circle to gather projection light, but the Fresnel light-resistant gain screen has the requirement of directionality in the installation process, and the concentric circle center of the Fresnel optical structure faces to the lens of the laser television, so that when people carefully observe the actual picture effect, not all Fresnel screens can have excellent picture restoration capability easily. The traditional white screen has the characteristic of convenient installation, but the traditional white screen has lower brightness gain, generally speaking, the gain of the traditional standard white screen adopting a diffuse reflection structure is 1.0, and the gain of the Fresnel anti-light gain screen is larger than 1.0, which means that the traditional white screen can keep more brightness of a projector on a screen compared with the standard white screen, so that if the gain of the traditional white screen can be increased to enable the traditional white screen to be close to or even larger than the gain of the Fresnel anti-light gain screen, the Fresnel anti-light gain screen can be replaced.
Currently, the prior art presents an optical coating technology, which obtains an optical coating by coating on a traditional white screen, and has a high-gain effect. For example, chinese patent CN107144901A discloses a method for preparing an optical slurry film and an optical film, the method comprising: step 1, providing a substrate, and coating a layer of prepared first slurry on one surface of the substrate; step 2, coating the prepared second slurry on the first slurry; wherein the first slurry comprises a slurry body and a first solvent mixture; the second slurry is prepared and synthesized by mixing and stirring a film forming agent, a defoaming agent, a surfactant, a second solvent, a coupling agent and a dispersing agent. However, the composite coating is 2 layers, the process is complex, and in some prior art, 4-5 layers are needed to achieve an ideal effect, so that the development of the optical coating is limited.
Disclosure of Invention
The invention aims to provide an optical coating for a projection screen of a laser television and a preparation method thereof, and the optical coating is prepared, when the optical coating is applied to a white screen, the brightness, the definition, the gain and the contrast of the white screen are all close to those of a special laser composite screen, the visual angle reaches more than 140 degrees, and the application range of the white screen is greatly expanded.
In order to achieve the purpose, the invention adopts the following technical scheme:
the optical coating for the projection screen of the laser television comprises the following components in percentage by mass:
10-15% of reflective powder;
18-21% of barium sulfate;
15-20% of titanium dioxide;
1-5% of polymethyl methacrylate micro powder;
3-8% of spherical organic silicon powder;
3-8% of electroplated aluminum glass microspheres;
0.5-3% of sodium carboxymethylcellulose;
20-30% of water-based acrylic resin;
10-18% of water.
In the invention, the titanium dioxide and the barium sulfate play a role in reflecting light, the reflecting powder and the electroplated aluminum glass microspheres play a role in gaining, and the polymethyl methacrylate micro powder and the spherical organic silicon powder play a role in scattering.
Further, the composition comprises the following components in percentage by mass:
12% of reflective powder;
20% of barium sulfate;
17% of titanium dioxide;
2% of polymethyl methacrylate micro powder;
5% of spherical organic silicon powder;
6% of electroplated aluminum glass microspheres;
sodium carboxymethylcellulose 1%;
25% of water-based acrylic resin;
12 percent of water.
Furthermore, the particle size of the reflective powder is 5-15 μm.
Further, the particle size of the barium sulfate is 15-200 μm.
Further, the particle size of the titanium dioxide is 20-80 μm.
Furthermore, the particle size of the polymethyl methacrylate micro powder is 1.5-3 μm.
Furthermore, the particle size of the spherical organic silicon powder is 1-3 μm.
Further, the spherical organic silicon powder is spherical polymethylsilsesquioxane.
Further, the particle size of the electroplated aluminum glass microsphere is 5-15 μm.
Furthermore, the electroplated aluminum glass microsphere is formed by plating a layer of metal aluminum on the outer surface of the glass microsphere, wherein the thickness of the metal aluminum is 0.5-1 μm.
The invention also aims to provide a preparation method of the optical coating for the projection screen of the laser television, which comprises the following steps:
s1) mixing the polymethyl methacrylate micro powder and the spherical organic silicon powder, adding the mixture into water-based acrylic resin, then adding water, and performing ultrasonic dispersion for 10-15 min to obtain a mixed solution;
s2) mixing and stirring the reflective powder, the barium sulfate, the titanium dioxide, the electroplated aluminum glass microspheres and the sodium carboxymethyl cellulose, adding the mixture into the mixed solution obtained in the step S1, and mechanically stirring for 5-10 min to obtain the light-emitting diode.
Compared with the prior art, the invention has the following beneficial effects:
(1) experiments show that after the optical coating is coated on a white screen, the brightness, the definition, the gain and the contrast of the white screen are close to those of a special laser composite screen.
(2) The optical coating can be coated in a single layer, and experiments show that the visual angle of the optical coating after being coated on the white screen is large and reaches more than 140 degrees.
Detailed Description
The present invention will be described in further detail with reference to the following examples. It should not be understood that the scope of the above-described subject matter of the present invention is limited to the following examples.
In the invention, the reflective powder is purchased from 3M company, the titanium dioxide is purchased from DuPont company, the electroplated aluminum glass microsphere is purchased from DY-3869, the water-based acrylic resin is purchased from south-sea two-dimensional water-based material company Limited in Foshan city, and other components can be purchased from conventional manufacturers.
Examples 1 to 5 projection screen optical coating for laser television
The composition comprises the following components in percentage by mass:
TABLE 1
The preparation method of the optical coating for the projection screen of the laser television comprises the following steps:
s1) mixing the polymethyl methacrylate micro powder and the spherical organic silicon powder, adding the mixture into the water-based acrylic resin, then adding water, and performing ultrasonic dispersion for 12min to obtain a mixed solution;
s2) mixing and stirring the reflective powder, the barium sulfate, the titanium dioxide, the electroplated aluminum glass microspheres and the sodium carboxymethyl cellulose, adding the mixture into the mixed solution obtained in the step S1, and mechanically stirring for 6min to obtain the light-emitting diode.
Comparative example 1 optical coating for projection screen of laser television
Similar to example 2, except that no spherical-type silica powder was added.
Comparative example 2 optical coating for projection screen of laser television
Similar to example 2, except that spherical-type organic silicon powder was replaced with silica powder.
Comparative example 3 optical coating for projection screen of laser television
The composition of this comparative example was the same as example 2.
The preparation method of the optical coating for the projection screen of the laser television comprises the following steps:
s1) mixing the polymethyl methacrylate micro powder and the spherical organic silicon powder, adding the mixture into the water-based acrylic resin, then adding water, and mechanically stirring for 12min to obtain a mixed solution;
s2) mixing and stirring the reflective powder, the barium sulfate, the titanium dioxide, the electroplated aluminum glass microspheres and the sodium carboxymethyl cellulose, adding the mixture into the mixed solution obtained in the step S1, and mechanically stirring for 6min to obtain the light-emitting diode.
Comparative example 4 optical coating for projection screen of laser television
The composition of this comparative example was the same as example 4.
The preparation method of the optical coating for the projection screen of the laser television comprises the following steps:
s1) mixing the polymethyl methacrylate micro powder and the spherical organic silicon powder, adding the mixture into the water-based acrylic resin, then adding water, and mechanically stirring for 12min to obtain a mixed solution;
s2, mixing and stirring the reflective powder, the barium sulfate, the titanium dioxide, the electroplated aluminum glass microspheres and the sodium carboxymethyl cellulose, adding the mixture into the mixed solution obtained in the step S1, and mechanically stirring for 6min to obtain the light-emitting diode.
Comparative example 5 optical coating for projection screen of laser television
Similar to example 2, except that sodium carboxymethylcellulose was not added.
Experiment I, Performance test
The experimental method comprises the following steps: after the examples/comparative examples were painted on a white screen (Soft cloth of the creative textile Co., Ltd. of Dongguan), reference was made to the comparison of the special laser composite screen cloth data (TD-102 of the Bantian Shenzhen Longgang region and Bantian specially Li Screen works, Shenzhen).
TABLE 2
| Group of | Brightness of light | Definition of | Gain of | Contrast ratio |
| Example 1 | 4.95 | 5.0 | 4.9 | 4.7 |
| Example 2 | 5.0 | 4.9 | 4.95 | 4.95 |
| Example 3 | 4.95 | 4.9 | 4.9 | 4.8 |
| Example 4 | 4.9 | 4.95 | 4.85 | 4.8 |
| Example 5 | 4.9 | 4.9 | 4.9 | 4.9 |
| Comparative example 1 | 3.5 | 3.7 | 3.45 | 3.3 |
| Comparative example 2 | 3.65 | 3.5 | 3.6 | 3.3 |
| Comparative example 3 | 4.1 | 4.05 | 4.1 | 4.1 |
| Comparative example 4 | 4.05 | 4.1 | 3.9 | 3.95 |
| Comparative example 5 | 4.9 | 4.85 | 4.9 | 4.95 |
| Blank example | 3.0 | 3.2 | 2.6 | 2.1 |
Note: the blank example was a mixture of aqueous acrylic resin and water sprayed onto a white screen only.
As can be seen from Table 2, the optical coatings of examples 1-5 applied to the white screen resulted in a white screen with brightness, sharpness, gain and contrast close to those of the special laser composite screen.
Experiment two, horizontal visual angle test
The experimental method comprises the following steps: after the examples/comparative examples were painted on a white screen once, a picture was projected onto the white screen with a projector at a distance of 2m from the white screen, and its horizontal viewing angle was measured with a luminance meter.
TABLE 3
Note: the blank example was a mixture of aqueous acrylic resin and water sprayed onto a white screen only.
The brightness is reduced along with the deviation of the center of the screen, when the brightness is reduced to 1/3, the angle between the position at the moment and the center of the screen is the visual angle, and the sum of the left visual angle and the right visual angle is the horizontal visual angle. As can be seen from Table 3, the horizontal viewing angles of examples 1-5 are as large as 140 ° or more, of which example 2 is the best embodiment of the present invention.
Compared with the example 2, the horizontal visual angle is greatly reduced because the spherical organic silicon powder is not added in the comparative example 1, and the horizontal visual angle of the optical coating coated on the white screen is also reduced after the spherical organic silicon powder is replaced by the silicon dioxide powder in the comparative example 2.
Comparative examples 3 and 4, the horizontal viewing angle of the optical coating applied to the white screen was decreased by adjusting the preparation method of the optical coating, and comparative example 5, in which no sodium carboxymethyl cellulose was added, was also decreased by applying the optical coating to the white screen, and it is presumed that the polymethyl methacrylate fine powder and spherical organic silicon powder which exert the scattering effect were not well distributed on the white screen due to the uneven particle sizes of the various raw materials added to the optical coating.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (9)
1. The optical coating for the projection screen of the laser television is characterized by comprising the following components in percentage by mass:
10-15% of reflective powder;
18-21% of barium sulfate;
15-20% of titanium dioxide;
1-5% of polymethyl methacrylate micro powder;
3-8% of spherical organic silicon powder;
3-8% of electroplated aluminum glass microspheres;
0.5-3% of sodium carboxymethylcellulose;
20-30% of water-based acrylic resin;
10-18% of water.
2. The optical coating for a projection screen of a laser television according to claim 1, comprising the following components in parts by mass:
12% of reflective powder;
20% of barium sulfate;
17% of titanium dioxide;
2% of polymethyl methacrylate micro powder;
5% of spherical organic silicon powder;
6% of electroplated aluminum glass microspheres;
sodium carboxymethylcellulose 1%;
25% of water-based acrylic resin;
12 percent of water.
3. The optical paint for a projection screen of a laser television as claimed in claim 1 or 2, wherein the particle size of the reflective powder is 5 to 15 μm.
4. The optical coating for a projection screen of a laser television set according to claim 1 or 2, wherein the particle size of the barium sulfate is 15 to 200 μm.
5. The optical paint for the projection screen of the laser television as claimed in claim 1 or 2, wherein the particle size of the titanium dioxide is 20 to 80 μm.
6. The optical coating for a projection screen of a laser television according to claim 1 or 2, wherein the polymethyl methacrylate fine powder has a particle size of 1.5 to 3 μm.
7. The optical coating for the projection screen of the laser television as claimed in claim 1 or 2, wherein the spherical organic silicon powder has a particle size of 1 to 3 μm.
8. The optical coating for the projection screen of the laser television as claimed in claim 1 or 2, wherein the particle size of the electroplated aluminum glass microsphere is 5-15 μm.
9. The method of claim 1, comprising the steps of:
s1) mixing the polymethyl methacrylate micro powder and the spherical organic silicon powder, adding the mixture into water-based acrylic resin, then adding water, and performing ultrasonic dispersion for 10-15 min to obtain a mixed solution;
s2) mixing and stirring the reflective powder, the barium sulfate, the titanium dioxide, the electroplated aluminum glass microspheres and the sodium carboxymethyl cellulose, adding the mixture into the mixed solution obtained in the step S1, and mechanically stirring for 5-10 min to obtain the light-emitting diode.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112940575A (en) * | 2021-03-15 | 2021-06-11 | 董璇 | Metallic light-resistant projection imaging paint and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112940575A (en) * | 2021-03-15 | 2021-06-11 | 董璇 | Metallic light-resistant projection imaging paint and preparation method thereof |
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