WO2020114225A1 - 投影幕组合涂料及投影幕的制备方法 - Google Patents

投影幕组合涂料及投影幕的制备方法 Download PDF

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WO2020114225A1
WO2020114225A1 PCT/CN2019/119138 CN2019119138W WO2020114225A1 WO 2020114225 A1 WO2020114225 A1 WO 2020114225A1 CN 2019119138 W CN2019119138 W CN 2019119138W WO 2020114225 A1 WO2020114225 A1 WO 2020114225A1
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paint
projection screen
light
coating
weight
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PCT/CN2019/119138
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English (en)
French (fr)
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崔可建
胡飞
王杰
李屹
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深圳光峰科技股份有限公司
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Priority to US17/299,763 priority Critical patent/US20220017756A1/en
Publication of WO2020114225A1 publication Critical patent/WO2020114225A1/zh

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    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F222/00—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 a carboxyl radical and containing at least one other carboxyl radical in the molecule; Salts, anhydrides, esters, amides, imides, or nitriles thereof
    • C08F222/10—Esters
    • C08F222/1006—Esters of polyhydric alcohols or polyhydric phenols
    • C08F222/106—Esters of polycondensation macromers
    • C08F222/1065—Esters of polycondensation macromers of alcohol terminated (poly)urethanes, e.g. urethane(meth)acrylates
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    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
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    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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    • 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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    • C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
    • C09D167/06—Unsaturated polyesters having carbon-to-carbon unsaturation
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    • C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
    • C09D167/06—Unsaturated polyesters having carbon-to-carbon unsaturation
    • C09D167/07—Unsaturated polyesters having carbon-to-carbon unsaturation having terminal carbon-to-carbon unsaturated bonds
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    • 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
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    • 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
    • C09D175/16—Polyurethanes having carbon-to-carbon unsaturated bonds having terminal carbon-to-carbon unsaturated bonds
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    • C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
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    • 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
    • C09D5/32—Radiation-absorbing paints
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    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/20—Diluents or solvents
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    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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    • 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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    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/66—Additives characterised by particle size
    • C09D7/67—Particle size smaller than 100 nm
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    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/66—Additives characterised by particle size
    • C09D7/68—Particle size between 100-1000 nm
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    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/66—Additives characterised by particle size
    • C09D7/69—Particle size larger than 1000 nm
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    • 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
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
    • 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
    • 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
    • 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
    • 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
    • C08K3/02—Elements
    • C08K3/08—Metals
    • C08K2003/0812—Aluminium
    • 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
    • C08K3/02—Elements
    • C08K3/04—Carbon
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    • C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
    • C09D163/10—Epoxy resins modified by unsaturated compounds
    • C—CHEMISTRY; METALLURGY
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    • C09D171/00—Coating compositions based on polyethers obtained by reactions forming an ether link in the main chain; Coating compositions based on derivatives of such polymers

Definitions

  • the invention relates to a projection screen combination paint and a preparation method of the projection screen, which belong to the technical field of display screen manufacturing.
  • laser TV With the continuous development of laser projection technology, laser TV has received wide attention and recognition from consumers due to its advantages of small size, large projection area and low cost, and the market has expanded year by year. Although the luminous flux of laser TV can reach a very high level at present, under the influence of ambient light, the contrast of the projected image is not satisfactory. At present, a variety of screens with anti-light effect have appeared on the market. Among them, black grid projection screens have received widespread attention and use due to their advantages of good anti-light effect and relatively low cost.
  • Cikon patent document CN107297928 discloses an optical cloth, a coating device and a coating method, which firstly prepare a colorless transparent micro prism with a prism structure on the surface of acrylic by die casting or UV curing (ultraviolet curing) transfer technology Grating, then spray reflective paint on one slope of the prism structure, and try to avoid the other slope of the prism structure from being sputtered by the paint; after the reflective paint is dried, spray black light-absorbing paint on the other slope, and it is necessary to prevent black light-absorbing paint Sputtered onto reflective paint. Because the structure of the prism is relatively small, it is difficult to manually complete the spraying operation of the above process. It is necessary to use extremely precise machinery to achieve the preparation of the black grid projection screen, which has high production cost and low production efficiency.
  • the Chinese patent document CN2718623Y discloses a black grid precision display projection screen whose prism structure light absorption surface is obtained by a cross-dyeing method, and the cross-dyeing method is complicated in process and high in cost.
  • the technical problem to be solved by the present invention is to provide a projection screen combination coating and projection screen preparation method in view of the deficiencies of the prior art, which uses photo-curing technology to coat the different sides of the prism microstructure in stages, and provides a A combination of projection screen coatings suitable for fractional coating.
  • the projection screen prepared by this method does not require a cross-dyeing process or a complex flat roller device, and an optical screen with good light resistance can be obtained, thereby achieving Compared with the prior art, the high brightness and high contrast of the projection screen of the laser TV has the advantages of energy saving, environmental protection, simple process and low cost.
  • a projection screen combination paint characterized in that the projection screen combination paint includes a light-absorbing paint and a reflective paint,
  • the light-absorbing coating contains the following components:
  • the reflective coating contains the following components:
  • the photoinitiator is a compound having initiation activity under ultraviolet light or visible light.
  • the acrylate is one or more of urethane acrylate, polyester acrylate, polyether acrylate or epoxy acrylate resin.
  • the reactive diluent is methyl methacrylate, butyl acrylate, isodecyl acrylate, dodecyl acrylate, lauryl acrylate, isooctyl acrylate, trimethylolpropane triacrylate, trimethylol
  • propane trimethacrylate, pentaerythritol triacrylate or hexanediol diacrylate is one or more of propane trimethacrylate, pentaerythritol triacrylate or hexanediol diacrylate.
  • the black pigment is carbon black, iron black or aniline black, and the average particle diameter of the black pigment is 20nm-2000nm, preferably 20nm-200nm.
  • the solvent is one or more of alcohols, esters, ethers, aliphatic hydrocarbons and aromatic hydrocarbons.
  • the auxiliary agent includes one or more of a dispersant, a leveling agent, an antifoaming agent, and a polymerization inhibitor.
  • the aluminum silver powder is in a flake shape, and the average particle diameter of the aluminum silver powder is 3 ⁇ m to 15 ⁇ m, preferably 3 ⁇ m to 8 ⁇ m.
  • a preparation method of a projection screen characterized in that the preparation method comprises the following steps:
  • S1 preparing a projection screen substrate with multiple prism microstructures, each of which has a first plane and a second plane that intersect;
  • the coating includes spray coating, roll coating, blade coating or screen printing.
  • the light curing light source is ultraviolet light or visible light.
  • the present invention uses photo-curing technology to coat the different sides of the prism microstructures in stages, and provides a combination coating for projection screens that is suitable for division coating.
  • the dyeing process does not require a complicated flat roller device to produce an optical screen with good light resistance, thereby achieving high brightness and high contrast of the laser TV projection screen.
  • FIG. 1 is a process flow diagram of the preparation method of the projection screen of the present invention.
  • the invention provides a projection screen combination coating, which comprises a light-absorbing coating and a reflective coating, and the light-absorbing coating contains the following components in parts by weight:
  • the reflective coating contains the following components in parts by weight:
  • the acrylate is one or more of urethane acrylate, polyester acrylate, polyether acrylate, epoxy acrylate resin, acrylate is a film-forming material, has good adhesion to aluminum silver powder, and can be further Increase the adhesion of the paint on the screen.
  • the reactive diluent is a methacrylate compound, which may specifically be methyl methacrylate (MMA), butyl acrylate (BA), isodecyl acrylate (IDA), dodecyl acrylate, lauryl acrylate (LA ), isooctyl acrylate (EHA), trimethylolpropane triacrylate (TMPTA), trimethylolpropane trimethacrylate (TMPTMA), pentaerythritol triacrylate (PETA) or hexanediol diacrylate One or more of (HDDA).
  • MMA methyl methacrylate
  • BA butyl acrylate
  • IDA isodecyl acrylate
  • LA lauryl acrylate
  • EHA isooctyl acrylate
  • TMPTA trimethylolpropane triacrylate
  • TMPTMA trimethylolpropane trimethacrylate
  • PETA pentaerythritol tri
  • the reactive diluent is used to adjust the viscosity of the screen coating to facilitate subsequent grinding; the reactive diluent is also called a reactive solvent, which is used as a dissolving or dispersing film-forming material and can participate in the film-forming reaction during the film-forming process of the coating It forms a type of compound that remains in the coating film without volatile components.
  • the reactive diluent can participate in the curing reaction of the epoxy resin and become part of the cross-linked network structure of the cured epoxy resin.
  • the photoinitiator is a compound having initiation activity under ultraviolet light or visible light.
  • the photoinitiator includes but is not limited to camphorquinone, fluorinated diphenyl titaniumlocene, bis(pentafluorinated phenyl) titanocene, diaryliodonium salt, triaryliodonium salt, alkyl iodide One or more of onium salt or cumene ferrocenium hexafluorophosphate.
  • the photoinitiator is used to absorb the energy of the radiated light band to initiate polymerization and crosslinking of the monomer.
  • the black pigment may be any one of carbon black, iron black, and aniline black.
  • the average particle diameter of the black pigment may be 20 nm-2000 nm, preferably 20 nm-200 nm, and more preferably 20 nm-50 nm.
  • the solvent is one or more of alcohols, esters, ethers, aliphatic hydrocarbons and aromatic hydrocarbons. It should be added that the solvents in the light-absorbing paint and the reflective paint may be the same or different.
  • the auxiliary agent includes one or more of a dispersing agent, a leveling agent, an antifoaming agent, and a polymerization inhibitor. It should be noted that the additives in the light-absorbing paint and the reflective paint may be the same or different.
  • the leveling agent is a silicone leveling agent or a fluorocarbon leveling agent.
  • the leveling agent can effectively reduce the surface tension of the coating, so that the coating forms a smooth, smooth and uniform ⁇ Film layer.
  • the defoaming agent is one or more of ethanol, n-butanol, organosilicon ester, mineral oil or lecithin.
  • the defoaming agent can effectively reduce the surface tension of the contact point to break the bubble film and produce defoaming Effect.
  • the polymerization inhibitor is one or more of phenothiazine, p-hydroxyanisole, hydroquinone, phenylnaphthylamine or p-tert-butylcatechol, and the polymerization inhibitor can prevent olefinic monomers
  • the free radicals of the body undergo polymerization.
  • the dispersing agent is a surfactant having two opposite properties of lipophilicity and hydrophilicity in the molecule, which is used to improve the dispersion of the solid raw material in the coating liquid, and can also prevent the sedimentation and aggregation of the particles.
  • the dispersant may use fatty acids, aliphatic amides, and lipids known in the art, such as, for example, stearamide, vinylbisstearic acid amide, stearic acid monoglyceride (GMS), triglyceride Glyceryl stearate (HTG), etc.
  • the aluminum-silver powder may be a floating type, wherein the floating aluminum-silver powder has a sheet structure with a particle size of 3 ⁇ m-15 ⁇ m, preferably 3 ⁇ m-8 ⁇ m; the aluminum silver powder is used to reflect light, which can improve the projection screen The light utilization rate further improves the light gain of the projection screen.
  • Step 1 Weigh 30 parts by weight of urethane acrylate, 10 parts by weight of xylene, 12 parts by weight of butyl acetate, 3 parts by weight of cyclohexanone, and 30 parts by weight of hexanediol diacrylate. Stir at room temperature to obtain a resin. Substrate.
  • Step 2 Mix 2 parts by weight of acetylene carbon black with the resin matrix obtained in step 1, and grind with a grinder until the black pigment is completely dispersed.
  • Step 3 Stir the black resin matrix in step 2 at a low speed, the stirring rate is less than 500 r/min, and add 0.3 parts by weight of leveling agent, 0.3 parts by weight of polymerization inhibitor, and 0.4 parts by weight of defoamer in this order.
  • Step 4 Add 2 parts by weight of camphorquinone to the composition obtained in the step 3, stir under the dark, mix evenly, then the coating is stored in a dark place until use.
  • the photoinitiator can be selected according to the wavelength of specific light conditions, which belongs to the conventional technology in the field of photocuring, and will not be described here.
  • Step 1 Take 20 parts by weight of aluminum silver powder and soak in 15 parts by weight of hexanediol diacrylate for 8 hours.
  • Step 2 Weigh 20 parts by weight of polyurethane acrylate, 10 parts by weight of xylene, 12 parts by weight of butyl acetate, 3 parts by weight of cyclohexanone, and the remaining half of 15 parts by weight of hexanediol diacrylate at room temperature Stir well to obtain a resin matrix.
  • Step 3 The aluminum silver powder solution obtained in step 1 and the resin matrix in step 2 are stirred at a low speed, the stirring rate is less than 500r/min, and 0.3 parts by weight of a leveling agent and a polymerization inhibitor are sequentially added 0.3 parts by weight, 0.4 parts by weight of defoamer.
  • Step 4 Add 2 parts by weight of camphorquinone to the composition obtained in the step 3, stir under the dark, mix evenly, then the coating is stored in a dark place until use.
  • the photoinitiator can be selected according to the wavelength of specific light conditions, which belongs to the conventional technology in the field of photocuring, and will not be described here.
  • FIG. 1 is a process flow diagram of the preparation method of the projection screen of the present invention. As shown in FIG. 1, the present invention also provides a method for preparing the above projection screen. The method includes the following steps:
  • S1 preparing a projection screen substrate 10 having multiple prism microstructures, each of which has a first plane 11 and a second plane 12 that intersect;
  • the present invention does not limit the angle between the first plane 11, the second plane 12, and the projection screen substrate 10, and those skilled in the art can make adjustments according to actual needs.
  • the projection screen substrate with multiple prism microstructures can be manufactured in various ways in the prior art, and the present invention will not repeat them.
  • the method of applying the coating onto the projection screen substrate includes but is not limited to spray coating, roller coating, blade coating, screen printing, preferably spray coating and screen printing, and further preferably spray coating.
  • the light curing light source may be ultraviolet light or visible light, which is related to the type of photoinitiator in the light-absorbing paint and the reflective paint.
  • the present invention does not limit the photocuring process parameters. Those skilled in the art can select a suitable photocuring process according to the types of light absorbing paint and reflective paint.
  • a solvent can be used for cleaning, and the solvent in the light-absorbing paint or the reflective paint is preferably used.
  • the present invention uses photo-curing technology to coat the different sides of the prism microstructures in stages, and provides a combination coating for projection screens that is suitable for division coating.
  • the dyeing process does not require a complicated flat roller device to produce an optical screen with good light resistance, thereby achieving high brightness and high contrast of the laser TV projection screen.

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Abstract

一种投影幕组合涂料，包含吸光涂料和反光涂料；该吸光涂料包含丙烯酸酯28-32重量份、活性稀释剂28-32重量份、光引发剂1-3重量份、黑色颜料1-3重量份、溶剂20-28重量份和助剂1-5重量份；该反光涂料包含丙烯酸酯28-32重量份、活性稀释剂28-32重量份、光引发剂1-3重量份、铝银粉18-23重量份、溶剂26-32重量份和助剂1-5重量份。一种投影幕的制备方法，包括：制备具有多个棱镜微结构的投影幕基板（10），每个棱镜微结构均具有相交的第一平面（11）和第二平面（12）；将吸光涂料和反光涂料中的一种涂布在投影幕基板（10）具有棱镜微结构的一侧，光固化位于第一平面（11）上的涂料，固化完成后，采用清洗溶剂洗除位于第二平面（12）上的涂料；将吸光涂料和反光涂料中的另一种涂布在投影幕基板（10）具有棱镜微结构的一侧，光固化位于第二平面（12）上的涂料，固化完成后，采用清洗溶剂洗除位于第一平面（11）上的涂料。

Description

投影幕组合涂料及投影幕的制备方法 技术领域
本发明涉及一种投影幕组合涂料及投影幕的制备方法，属于显示屏幕制造技术领域。
背景技术
随着激光投影技术的不断发展，激光电视凭借其体积小、投影面积大、成本低等优势，得到消费者的广泛关注和认可，市场逐年扩大。虽然目前激光电视的光通量已经可以达到很高的水平，但在环境光的影响下，投影画面对比度不尽如人意。目前市场上已经出现了多种具有抗光效果的屏幕，其中黑栅型投影幕因抗光效果好，相对成本低等优势，受到了普遍关注和使用。
中国专利文献CN107297928中公开了一种光学布及涂布装置和涂布方法，其首先通过压铸或者UV固化(紫外固化)转印技术在亚克力的表面精确制备出具有棱镜结构的无色透明微棱镜光栅，然后在棱镜结构的一个斜面喷涂反光涂料，同时尽量避免棱镜结构的另一个斜面被涂料溅射；在反光涂料干燥完成后，再在另一斜面喷涂黑色吸光涂料，且需防止黑色吸光涂料溅射到反光涂料上。因为棱镜结构比较微小，人工很难完成上述工艺的喷涂操作，需要使用极其精密的机械才可以实现黑栅型投影幕的制备，其生产成本高，生产效率低。
中国专利文献CN2718623Y中公开了一种黑栅精显投影屏幕，其棱镜结构吸光面由渡染方法得到，而渡染的方式工艺复杂且成本较高。
发明内容
本发明所要解决的技术问题在于针对现有技术的不足，提供一种投影幕组合涂料及投影幕的制备方法，利用光固化技术对棱镜微结构的不同侧面进行分次涂布，并提供了一种适用于分次涂布的投影幕组 合涂料，采用该方法制备的投影幕无需渡染工艺，也不需要复杂的平面辊装置，便可制得具有良好的抗光效果的光学屏幕，从而实现激光电视投影画面的高亮度和高对比度，与现有技术相比，具有节能环保、工艺简便以及成本低廉的优点。
本发明所要解决的技术问题是通过如下技术方案实现的：
一种投影幕组合涂料，其特征在于，所述投影幕组合涂料包含吸光涂料和反光涂料，
所述吸光涂料包含如下组分：
Figure PCTCN2019119138-appb-000001
所述反光涂料包含如下组分：
Figure PCTCN2019119138-appb-000002
其中，所述光引发剂为在紫外光或可见光下具有引发活性的化合物。
优选的，所述丙烯酸酯为聚氨酯丙烯酸酯、聚酯丙烯酸酯、聚醚丙烯酸酯或环氧丙烯酸酯树脂中的一种或多种。
优选的，所述活性稀释剂为甲基丙烯酸甲酯、丙烯酸丁酯、丙烯酸异癸酯、丙烯酸十二酯、丙烯酸月桂酯、丙烯酸异辛酯、三羟甲基丙烷三丙烯酸酯、三羟甲基丙烷三甲基丙烯酸酯、季戊四醇三丙烯酸酯或己二醇二丙烯酸酯中的一种或多种。
优选的，所述黑色颜料为炭黑、铁黑或苯胺黑，所述黑色颜料的 平均粒径为20nm-2000nm，优选为20nm-200nm。
优选的，所述溶剂为醇类、酯类、醚类、脂肪烃和芳香烃中的一种或多种。
优选的，所述助剂包含分散剂、流平剂、消泡剂、阻聚剂中的一种或多种。
优选的，所述铝银粉为片状，所述铝银粉的平均粒径为3μm-15μm，优选为3μm-8μm。
一种投影幕的制备方法，其特征在于，所述制备方法包含如下步骤：
S1：制备具有多个棱镜微结构的投影幕基板，每个所述棱镜微结构均具有相交的第一平面和第二平面；
S2：将吸光涂料和反光涂料中的一种涂料涂布在投影幕基板具有棱镜微结构的一侧，光固化位于第一平面上的涂料，固化完成后，采用清洗溶剂洗除位于第二平面上的涂料；
S3：将吸光涂料和反光涂料中的另一种涂料涂布在投影幕基板具有棱镜微结构的一侧，光固化位于第二平面上的涂料，固化完成后，采用清洗溶剂洗除位于第一平面上的涂料。
优选的，所述涂布包括喷涂、辊涂、刮涂或丝网印刷。
优选的，所述光固化的光源为紫外光或可见光。
综上所述，本发明利用光固化技术对棱镜微结构的不同侧面进行分次涂布，并提供了一种适用于分次涂布的投影幕组合涂料，采用该方法制备的投影幕无需渡染工艺，也不需要复杂的平面辊装置，便可制得具有良好的抗光效果的光学屏幕，从而实现激光电视投影画面的高亮度和高对比度，与现有技术相比，具有节能环保、工艺简便以及成本低廉的优点。
下面结合附图和具体实施例，对本发明的技术方案进行详细地说明。
附图说明
图1为本发明投影幕制备方法的工艺流程图。
具体实施方式
本发明提供一种投影幕组合涂料，所述投影幕组合涂料包含吸光涂料和反光涂料，所述吸光涂料包含按重量份计的如下组分：
Figure PCTCN2019119138-appb-000003
所述反光涂料包含按重量份计的如下组分：
Figure PCTCN2019119138-appb-000004
所述丙烯酸酯为聚氨酯丙烯酸酯、聚酯丙烯酸酯、聚醚丙烯酸酯、环氧丙烯酸酯树脂中的一种或多种，丙烯酸酯为成膜材料，对铝银粉有较好附着力，可进一步增加涂料在银幕上的附着力。
所述活性稀释剂为甲基丙烯酸酯类化合物，具体可为甲基丙烯酸甲酯(MMA)、丙烯酸丁酯(BA)、丙烯酸异癸酯(IDA)、丙烯酸十二酯、丙烯酸月桂酯(LA)、丙烯酸异辛酯(EHA)、三羟甲基丙烷三丙烯酸酯(TMPTA)、三羟甲基丙烷三甲基丙烯酸酯(TMPTMA)、季戊四醇三丙烯酸酯(PETA)或己二醇二丙烯酸酯(HDDA)中的一种或多种。所述活性稀释剂用于调节银幕涂料的粘度，便于后续的研磨；所述活性稀释剂又称反应性溶剂，其作为溶解或分散成膜材料，又能在涂料成膜过程中参与成膜反应，形成不挥发组份而留在涂膜中的一类化合物，活性稀释剂可以参加环氧树脂的固化反应，成为环氧树脂 固化物的交联网络结构的一部分。
其中，所述光引发剂为在紫外光或可见光下具有引发活性的化合物。例如所述光引发剂包含但不限于樟脑醌、氟化二苯基二茂钛、双(五氟化苯基)二茂钛、二芳基碘鎓盐、三芳基碘鎓盐、烷基碘鎓盐或异丙苯茂铁六氟磷酸盐中的一种或几种，所述光引发剂用于吸收辐射光波段的能量，以引发单体聚合交联固化。
所述黑色颜料可以为炭黑、铁黑和苯胺黑中的任意一种。所述黑色颜料的平均粒径可以为20nm-2000nm，优选20nm-200nm，进一步优选为20nm-50nm。
所述溶剂为醇类、酯类、醚类、脂肪烃和芳香烃中的一种或多种。需要补充的是，所述吸光涂料和反光涂料中的溶剂可以相同也可以不同。
所述助剂包含分散剂、流平剂、消泡剂、阻聚剂中的一种或多种。需要说明的是，所述吸光涂料和反光涂料中的助剂可以相同也可以不同。
具体地，所述流平剂为有机硅流平剂或氟碳流平剂，所述流平剂可有效减小涂料的表面张力，使得涂料在成膜过程中形成一个平整、光滑、均匀的膜层。
所述消泡剂为乙醇、正丁醇、有机硅酯、矿物油或卵磷脂中的一种或多种，所述消泡剂能有效降低接触点的表面张力以破坏泡膜，产生消泡的效果。
所述阻聚剂为吩噻嗪、对羟基苯甲醚、对苯二酚、苯基萘胺或对叔丁基邻苯二酚中的一种或多种，所述阻聚剂可防止烯类单体的自由基发生聚合反应。
所述分散剂为是在分子内同时具有亲油性和亲水性两种相反性质的界面活性剂，用于改善固体原料在涂料液中的分散，同时也能防止颗粒的沉降和凝聚。具体而言，所述分散剂可采用本领域公知的脂肪酸类、脂肪族酰胺类和脂类，例如例如硬脂酰胺、乙烯基双硬脂酰胺，、硬脂酸单甘油酯(GMS)、三硬脂酸甘油酯(HTG)等。
所述铝银粉可以为浮型，其中所述浮型铝银粉为片状结构，粒径 为3μm-15μm，优选为3μm-8μm；所述铝银粉用于对光线进行反光，可提高投影幕的光利用率，进一步提高投影幕的光增益。
本发明吸光涂料的制备
称取吸光涂料的原料聚氨酯丙烯酸酯30重量份，己二醇二丙烯酸酯30重量份，樟脑醌2重量份，乙炔炭黑2重量份,溶剂25重量份，其中溶剂包含二甲苯10重量份，乙酸丁酯12重量份，环己酮3重量份,助剂1重量份，其中助剂包含流平剂0.3重量份、阻聚剂0.3重量份，消泡剂0.4重量份。
步骤1：称取聚氨酯丙烯酸酯30重量份、二甲苯10重量份，乙酸丁酯12重量份，环己酮3重量份、30重量份的己二醇二丙烯酸酯于常温下搅拌均匀，得到树脂基体。
步骤2：将乙炔炭黑2重量份与所述步骤1中所得到树脂基体混合，用研磨机研磨至黑色颜料完全分散。
步骤3：将所述步骤2中黑色树脂基体低速搅拌，所述搅拌速率小于500r/min，并依次加入流平剂0.3重量份、阻聚剂0.3重量份，消泡剂0.4重量份。
步骤4：向所述步骤3中得到的组合物中加入樟脑醌2重量份，避光下搅拌，混合均匀后即为所述涂料，避光储存，待用。
其中光引发剂可以根据具体的光照条件波长进行选择，属于光固化领域的常规技术，此处不再鳌述。
本发明反光涂料的制备
称取反光涂料的原料聚氨酯丙烯酸酯20重量份，己二醇二丙烯酸酯30重量份，樟脑醌1重量份，铝银粉20重量份，溶剂28重量份，其中溶剂包含二甲苯13重量份，乙酸丁酯12重量份，环己酮3重量份,助剂1重量份，其中助剂包含流平剂0.3重量份、阻聚剂0.3重量份，消泡剂0.4重量份。
步骤1：取20重量份铝银粉浸泡于15重量份的己二醇二丙烯酸酯中8小时。
步骤2：称取聚氨酯丙烯酸酯20重量份、二甲苯10重量份，乙酸丁酯12重量份，环己酮3重量份、以及剩余的另一半15重量份的己二醇二丙烯酸酯于常温下搅拌均匀，得到树脂基体。
步骤3：将所述步骤1中所得到铝银粉溶液与将所述步骤2中的树脂基体，低速搅拌，所述搅拌速率小于500r/min，并依次加入流平剂0.3重量份、阻聚剂0.3重量份，消泡剂0.4重量份。
步骤4：向所述步骤3中得到的组合物中加入樟脑醌2重量份，避光下搅拌，混合均匀后即为所述涂料，避光储存，待用。
其中光引发剂可以根据具体的光照条件波长进行选择，属于光固化领域的常规技术，此处不再鳌述。
下面具体说明本发明抗光幕的制备方法
图1为本发明投影幕制备方法的工艺流程图。如图1所示，本发明还提供一种上述投影幕的制备方法，所述制备方法包含如下步骤：
S1：制备具有多个棱镜微结构的投影幕基板10，每个所述棱镜微结构均具有相交的第一平面11和第二平面12；
S2：将吸光涂料和反光涂料中的一种涂料涂布在投影幕基板具有棱镜微结构的一侧，光固化位于第一平面11上的涂料，固化完成后，采用清洗溶剂洗除位于第二平面12上的涂料；
S3：将吸光涂料和反光涂料中的另一种涂料涂布在投影幕基板具有棱镜微结构的一侧，光固化位于第二平面12上的涂料，固化完成后，采用清洗溶剂洗除位于第一平面11上的涂料。
在S1中，具体地，多个所述第一平面11相互平行，多个所述第二平面12相互平行，所述第一平面11和所述第二平面12交替设置投影幕基板的一侧，共同形成投影幕基板一侧的外表面，本发明并不限制第一平面11、第二平面12以及投影幕基板10之间的夹角，本领域技术人员可以根据实际需要进行调整。具有多个棱镜微结构的投影幕基板可采用现有技术中的多种方式制得，本发明不再赘述。
将涂料涂布到投影幕基板上的方式包括但不限于喷涂、辊涂、刮涂、丝网印刷，优选喷涂和丝网印刷，进一步优选为喷涂。
在S2和S3中，光固化的光源可以为紫外光，也可以为可见光， 其与吸光涂料和反光涂料中光引发剂的种类相关。本发明并不限定光固化的工艺参数，本领域技术人员可以根据吸光涂料和反光涂料的种类选择合适的光固化工艺。
清洗未固化的涂料时，可以采用溶剂进行清洗，优选选用吸光涂料或反光涂料中的溶剂。
下面结合具体实施例对本发明投影幕组合涂料的涂覆方法作进一步地介绍。
首先制备具有多个棱镜微结构的投影幕基板，将吸光涂料喷涂在投影幕基板具有棱镜微结构的一侧，光固化位于第一平面上的吸光涂料，固化完成后，清洗位于第二平面上的吸光涂料，从而在投影幕基板上形成吸光层；将反光涂料喷涂在投影幕基板具有棱镜微结构的一侧，光固化位于第二平面上的反光涂料，固化完成后，清洗位于第一平面上的反光涂料，从而在投影幕基板上形成反光层。
综上所述，本发明利用光固化技术对棱镜微结构的不同侧面进行分次涂布，并提供了一种适用于分次涂布的投影幕组合涂料，采用该方法制备的投影幕无需渡染工艺，也不需要复杂的平面辊装置，便可制得具有良好的抗光效果的光学屏幕，从而实现激光电视投影画面的高亮度和高对比度，与现有技术相比，具有节能环保、工艺简便以及成本低廉的优点。

Claims (10)

  1. 一种投影幕组合涂料，其特征在于，所述投影幕组合涂料包含吸光涂料和反光涂料，
    所述吸光涂料包含如下组分：
    Figure PCTCN2019119138-appb-100001
    所述反光涂料包含如下组分：
    Figure PCTCN2019119138-appb-100002
    其中，所述光引发剂为在紫外光或可见光下具有引发活性的化合物。
  2. 如权利要求1所述的投影幕组合涂料，其特征在于，所述丙烯酸酯为聚氨酯丙烯酸酯、聚酯丙烯酸酯、聚醚丙烯酸酯或环氧丙烯酸酯树脂中的一种或多种。
  3. 如权利要求1所述的投影幕组合涂料，其特征在于，所述活性稀释剂为甲基丙烯酸甲酯、丙烯酸丁酯、丙烯酸异癸酯、丙烯酸十二酯、丙烯酸月桂酯、丙烯酸异辛酯、三羟甲基丙烷三丙烯酸酯、三羟甲基丙烷三甲基丙烯酸酯、季戊四醇三丙烯酸酯或己二醇二丙烯酸酯中的一种或多种。
  4. 如权利要求1所述的投影幕组合涂料，其特征在于，所述黑色颜料为炭黑、铁黑或苯胺黑，所述黑色颜料的平均粒径为20nm-2000nm，优选为20nm-200nm。
  5. 如权利要求1所述的投影幕组合涂料，其特征在于，所述溶剂为醇类、酯类、醚类、脂肪烃和芳香烃中的一种或多种。
  6. 如权利要求1所述的投影幕组合涂料，其特征在于，所述助剂包含分散剂、流平剂、消泡剂、阻聚剂中的一种或多种。
  7. 如权利要求1所述的投影幕组合涂料，其特征在于，所述铝银粉为片状，所述铝银粉的平均粒径为3μm-15μm，优选为3μm-8μm。
  8. 一种投影幕的制备方法，其特征在于，所述制备方法包含如下步骤：
    S1：制备具有多个棱镜微结构的投影幕基板，每个所述棱镜微结构均具有相交的第一平面和第二平面；
    S2：将吸光涂料和反光涂料中的一种涂料涂布在投影幕基板具有棱镜微结构的一侧，光固化位于第一平面上的涂料，固化完成后，采用清洗溶剂洗除位于第二平面上的涂料；
    S3：将吸光涂料和反光涂料中的另一种涂料涂布在投影幕基板具有棱镜微结构的一侧，光固化位于第二平面上的涂料，固化完成后，采用清洗溶剂洗除位于第一平面上的涂料；
    其中，所述吸光涂料和反光涂料为如权利要求1-7中任一项所述的吸光涂料和反光涂料。
  9. 如权利要求8所述的制备方法，其特征在于，所述涂布包括喷涂、辊涂、刮涂或丝网印刷。
  10. 如权利要求8所述的制备方法，其特征在于，所述光固化的光源为紫外光或可见光。
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