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WO2020052254A1 - 一种银幕涂料 - Google Patents

一种银幕涂料 Download PDF

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Publication number
WO2020052254A1
WO2020052254A1 PCT/CN2019/086929 CN2019086929W WO2020052254A1 WO 2020052254 A1 WO2020052254 A1 WO 2020052254A1 CN 2019086929 W CN2019086929 W CN 2019086929W WO 2020052254 A1 WO2020052254 A1 WO 2020052254A1
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WO
WIPO (PCT)
Prior art keywords
acrylate
screen
parts
silver powder
weight
Prior art date
Application number
PCT/CN2019/086929
Other languages
English (en)
French (fr)
Inventor
崔可建
胡飞
张红秀
李屹
Original Assignee
深圳光峰科技股份有限公司
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Filing date
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Application filed by 深圳光峰科技股份有限公司 filed Critical 深圳光峰科技股份有限公司
Publication of WO2020052254A1 publication Critical patent/WO2020052254A1/zh

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • 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
    • C09D101/00—Coating compositions based on cellulose, modified cellulose, or cellulose derivatives
    • C09D101/08—Cellulose derivatives
    • C09D101/10—Esters of organic acids
    • C09D101/12—Cellulose acetate
    • 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
    • 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
    • C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • C09D171/02—Polyalkylene oxides
    • 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
    • C09D7/60—Additives non-macromolecular
    • C09D7/63—Additives non-macromolecular organic
    • 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
    • C09D7/66—Additives characterised by particle size
    • C09D7/69—Particle size larger than 1000 nm
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
    • C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2463/00—Characterised by the use of epoxy resins; Derivatives of epoxy resins
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2467/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
    • C08J2467/06—Unsaturated polyesters
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2475/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
    • C08J2475/04—Polyurethanes
    • C08J2475/14—Polyurethanes having carbon-to-carbon unsaturated bonds
    • 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
    • C08K2003/0806—Silver
    • 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
    • C08K2201/00—Specific properties of additives
    • C08K2201/011—Nanostructured additives
    • 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
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • 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

Definitions

  • the invention relates to a screen coating, in particular to a solvent-free environment-friendly screen coating, and belongs to the technical field of coating manufacturing.
  • Metal screen is a reflective screen coated with a layer of metal particles on the base material of the curtain. It is popular because it can provide high-quality optical effects. Compared with plastic and glass screens, metal screens have the characteristics of high gain, large viewing angle, high contrast, excellent color reproduction, thin and soft substrate, easy maintenance, and long life. At the same time, the metal screen is also the preferred screen type in 3D movie viewing scenes.
  • the production of silver screens is generally carried out by spraying a solvent-based aluminum-silver paste coating on a substrate, which is obtained after drying.
  • This production method requires a large amount of volatile solvents, and a large amount of organic gas emissions are generated during the production process. It threatens the health of workers and causes pollution to the environment.
  • the drying process usually takes several days and the time cost is relatively high.
  • environmentally friendly production methods have gradually become mainstream, so how to develop an environmentally friendly aluminum silver paste that can replace solvent aluminum silver paste has become an urgent problem.
  • the technical problem to be solved by the present invention is to provide a screen coating for the shortcomings of the prior art, which is characterized in that the screen coating contains the following components by weight:
  • the reactive diluent is a methacrylate compound.
  • the acrylate is one or more of urethane acrylate, polyester acrylate, polyether acrylate, or epoxy acrylate resin.
  • the epoxy resin is one or more of a glycidyl ether epoxy resin, a glycidyl ester epoxy resin, or a glycidylamine epoxy resin.
  • the reactive diluent is methyl methacrylate, butyl acrylate, isodecyl acrylate, dodecyl acrylate, lauryl acrylate, isooctyl acrylate, trimethylolpropane triacrylate, and trimethylolpropane.
  • trimethacrylate, pentaerythritol triacrylate or hexanediol diacrylate is trimethacrylate, pentaerythritol triacrylate or hexanediol diacrylate.
  • the aluminum silver powder is a floating type or a non-floating type, and a particle diameter of the aluminum silver powder is 1 ⁇ m to 50 ⁇ m;
  • the particle size of the aluminum silver powder is 2 ⁇ m-20 ⁇ m.
  • the scattering particles are one or more of nano titanium dioxide, nano silicon dioxide, or ultrafine calcium carbonate.
  • the aluminum silver powder directing agent is cellulose acetate
  • the leveling agent is an organic silicon leveling agent or a fluorocarbon leveling agent
  • the defoaming agent is one or more of ethanol, n-butanol, silicone ester, mineral oil, or lecithin;
  • the polymerization inhibitor is one or more of phenothiazine, p-hydroxyanisole, hydroquinone, phenylnaphthylamine, or p-tert-butylcatechol.
  • the photoinitiator is active under a light radiation of 360nm-780nm.
  • the photoinitiator is camphorquinone, fluorinated diphenyl titanocene, bis (pentafluorophenyl) titanocene, diaryl iodonium salt, triaryl iodonium salt, alkyl iodonium salt, or One or more of cumene ferrocene hexafluorophosphate.
  • the invention does not need to add any organic volatile solvents, which greatly reduces the harm to the environment and human safety of the traditional screen coatings organic volatile solvents, accords with the current development trend of environmental protection coatings, and has broad application prospects.
  • the present invention improves the arrangement and orientation of aluminum silver powder by innovatively adding cellulose acetate as an aluminum silver powder directing agent, so that the light reflection angle of the screen exhibits a Gaussian distribution in a certain range, and further improves the brightness gain of the screen.
  • the invention provides a screen paint, which comprises the following components by weight:
  • the invention does not need to add any organic volatile solvents, and greatly reduces the harm to the environment and human safety of the traditional screen coating organic volatile solvents.
  • the acrylate is one or more of polyurethane acrylate, polyester acrylate, polyether acrylate, and epoxy acrylate resin.
  • the acrylate is a film-forming material, and has good adhesion to aluminum and silver powder. Increase paint adhesion on the screen.
  • the epoxy resin is one or more of a glycidyl ether epoxy resin, a glycidyl ester epoxy resin, and a glycidylamine epoxy resin.
  • the epoxy resin is a film-forming material and has a good The flexibility can further increase the bending resistance of the screen and realize the folding and transportation of the screen.
  • the reactive diluent is a methacrylate compound, and specifically may 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 (HDDA).
  • the reactive diluent is used to adjust the viscosity of the screen coating, which is convenient for subsequent grinding.
  • the reactive diluent is also called a reactive solvent.
  • the reactive diluent can participate in the curing reaction of the epoxy resin and become part of the crosslinked network structure of the cured epoxy resin.
  • the aluminum silver powder may be a floating type or a non-floating type.
  • the aluminum silver powder is in the shape of a sheet, and the particle diameter is 1 ⁇ m-50 ⁇ m, preferably 1 ⁇ m-20 ⁇ m, further preferably 2 ⁇ m-20 ⁇ m, and more preferably 2 ⁇ m-10 ⁇ m.
  • the aluminum silver powder is used for reflecting light, which can improve the screen's The light utilization ratio further improves the light gain of the screen.
  • the floating aluminum silver powder is a floating scale-like structure, floating on the coating surface of the screen; when the aluminum silver powder is a non-floating aluminum silver powder, the non-floating aluminum silver powder can be uniformly and parallelly distributed throughout the screen coating. Because of the resin material coating, it has good oxidation resistance, acid and alkali resistance and abrasion resistance.
  • the scattering particles are one or more of nano titanium dioxide, nano silica, and ultra-fine calcium carbonate.
  • the scattering particles can improve the uniformity of light and further increase the viewing angle of the screen.
  • the aluminum-silver powder orientation agent is cellulose acetate, which can be used to improve the alignment of the aluminum-silver powder. After the traditional solvent-based screen coating is sprayed onto the screen, the solvent evaporates to form a film. The pressure generated during the solvent volatilization process can squeeze the aluminum and silver powder in the film layer into a regular arrangement orientation, thereby obtaining an ideal narrow viewing angle and further improving Gain from the screen.
  • cellulose acetate as an aluminum-silver powder directing agent, the arrangement and orientation of aluminum-silver powder is increased, so as to compensate for the irregular arrangement of aluminum-silver powder caused by the absence of volatile solvents, so that the light reflection angle of the screen exhibits a Gaussian distribution in a certain range. Increase screen brightness gain.
  • the leveling agent is an organic silicon 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 flat, smooth and uniform film layer during the film formation process.
  • the defoaming agent is one or more of ethanol, n-butanol, silicone ester, mineral oil, and lecithin.
  • the defoaming agent can effectively reduce the surface tension of the contact point to destroy the bubble film and generate defoaming. Effect.
  • the polymerization inhibitor is one or more of phenothiazine, p-hydroxyanisole, hydroquinone, phenylnaphthylamine, and p-tert-butylcatechol.
  • the polymerization inhibitor can prevent olefinic monomers. Polymerization of free radicals.
  • the photoinitiator is a compound that is active under the light radiation of 360nm-780nm, and the compound is camphorquinone (CQ), fluorinated diphenyltitanocene (Irgacure784), and bis (pentafluorinated phenyl) diamine.
  • CQ camphorquinone
  • fluorinated diphenyltitanocene Irgacure784
  • bis (pentafluorinated phenyl) diamine bis (pentafluorinated phenyl) diamine.
  • One or more of titaniumocene, diaryliodonium salt, triaryliodonium salt, alkyliodonium salt, cumeneferrocene hexafluorophosphate the photoinitiator is used to absorb visible light Energy to initiate monomer cross-linking and curing.
  • the present invention also provides a method for preparing a screen coating material as described above.
  • the preparation method is as follows: acrylate, epoxy resin, reactive diluent, aluminum silver powder, scattering particles, aluminum silver powder directing agent, flow
  • the leveling agent, defoaming agent, and polymerization inhibitor are mixed uniformly to form a mixed slurry, which can be stored at room temperature for use; before coating, the mixed slurry is mixed with a photoinitiator to form a solvent-free Environmentally friendly screen coating.
  • the invention also provides a method for preparing a screen, which comprises: cleaning the screen substrate; applying a solvent-free environmentally-friendly screen coating to the screen substrate, allowing it to stand, level, and defoam; using light Curing screen coating; cleaning the screen coating after curing with a solvent to remove uncured monomers on the surface, and drying the product at room temperature.
  • spray coating, roll coating, doctor blade coating, screen printing, and the like can be used for coating the screen paint on the screen substrate.
  • the standing time after the screen coating is coated on the screen substrate is preferably 30min-120min.
  • the light source is preferably a blue linear light source or a blue-violet linear light source. When the light source is cured, it is preferable to irradiate the screen paint with a uniform speed.
  • the PET film is used as the substrate. After the cleaning is completed, the above coating is uniformly coated on it by screen printing. After being left for 80 minutes, the coating film is irradiated with a 445nm blue laser light source until curing and molding. The solvent is washed and dried. The finished product .
  • polyester acrylate 25 parts by weight of polyester acrylate, 15 parts by weight of glycidylamine epoxy resin, 25 parts by weight of hexanediol diacrylate, 23 parts by weight of flake aluminum silver powder with a particle size of 10 ⁇ m, and 3 parts by weight of nano-silica 1.5 parts by weight of organosilicon leveling agent, 1.5 parts by weight of cellulose acetate, 1.2 parts by weight of lecithin, and 1 part by weight of hydroquinone were added to the reaction container in order, and mechanically stirred for standby.
  • the PET film is used as the substrate. After the cleaning is completed, the above coating is uniformly coated on it by a knife coating method, left for 60 minutes, and the coating film is irradiated with a 405nm blue-violet light source until curing and molding, a small amount of solvent is washed, and the finished product is dried.
  • the PET film is used as the substrate. After the cleaning is completed, the above coating is uniformly coated by spraying, left for 30 minutes, and the coating film is irradiated with a 445nm blue light source until curing and molding, washed with a small amount of solvent, and dried and finished.
  • the PET film is used as the substrate. After the cleaning is completed, the above coating is uniformly coated on the coating by roll coating, left for 30 minutes, and the coating film is irradiated with a 445nm blue light source until curing and molding, washed with a small amount of solvent, and dried.
  • the PET film is used as the substrate. After the cleaning is completed, the above coating is uniformly coated on the screen printing method, left for 120 minutes, and the coating film is irradiated with a 405nm blue-violet light source until curing and molding, washing with a small amount of solvent, and drying the finished product.
  • the screen coating of the present invention is mainly composed of acrylate, epoxy resin, reactive diluent, aluminum silver powder, scattering particles, aluminum silver powder directing agent, leveling agent, defoaming agent, polymerization inhibitor, photoinitiator and other groups.
  • Composition without any volatile solvent, can be quickly cured into a film under the irradiation of visible laser light, the formed metal film has good adhesion to the substrate, excellent optical effect, simple preparation process and environmentally friendly curing process.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Nanotechnology (AREA)
  • Paints Or Removers (AREA)

Abstract

一种银幕涂料，其按质量份的组成为：丙烯酸酯10-25重量份，环氧树脂10-25重量份，活性稀释剂20-50重量份，铝银粉20-30重量份，散射粒子0.5-5重量份，铝银粉定向剂0.1-5重量份，流平剂0.1-5重量份，消泡剂0.1-3重量份，阻聚剂0.1-3重量份，光引发剂0.1-5重量份。

Description

一种银幕涂料 技术领域
本发明涉及一种银幕涂料，特别是涉及一种无溶剂型环保银幕涂料，属于涂料制造技术领域。
背景技术
随着人们生活水平的日益提高，越来越多的观众走进电影院，并随之对观影过程中的感受提出了越来越高的要求。金属银幕是一种在幕布基材上涂覆有一层金属粒子的反射型屏幕，因其可以提供优质的光学效果而备受欢迎。与塑料及玻璃银幕相比，金属银幕具有高增益，大视角、高对比度、优异色彩还原性、基体薄而柔软、易维护、寿命长等特点。同时，金属银幕也是3D观影场景中优选的屏幕类型。
目前银幕的制作一般是通过将溶剂型铝银浆涂料喷涂于基体上，在经过干燥后所得，这种制作方法需要用到大量的挥发性溶剂，生产过程中会产生大量有机气体的排放，严重威胁着工作人员的健康且会对环境造成污染，同时干燥过程一般需要几天，时间成本也比较高。随着人们环保意识的不断增强和对健康的愈加关注，环保型的生产方式逐渐成为主流，因此如何开发出一种能够替代溶剂型铝银浆的环保型铝银浆成为亟待解决的问题。
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，提供一种银幕涂料，其特征在于，所述银幕涂料包含以下重量份的组份：
Figure PCTCN2019086929-appb-000001
Figure PCTCN2019086929-appb-000002
其中，所述活性稀释剂为甲基丙烯酸酯类化合物。
进一步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。
进一步所述环氧树脂为缩水甘油醚类环氧树脂、缩水甘油酯类环氧树脂或缩水甘油胺类环氧树脂中的一种或多种。
进一步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。
进一步所述铝银粉为浮型或非浮型，所述铝银粉的粒径为1μm-50μm；
优选的，所述铝银粉的粒径为2μm-20μm。
进一步所述散射粒子为纳米二氧化钛、纳米二氧化硅或超微细碳酸钙中的一种或多种。
进一步所述铝银粉定向剂为醋酸纤维素；
所述流平剂为有机硅流平剂或氟碳流平剂；
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。
进一步所述光引发剂为在360nm-780nm的光辐射下具有活性。
进一步所述光引发剂为樟脑醌、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。
本发明相较于现有的银幕涂料，无需添加任何有机挥发性溶剂，大大减小了传统银幕涂料有机挥发溶剂对环境和人身安全的危害，符合目前环保涂料的发展趋势，具有广阔的应用前景，另外本发明通过创新性的添加醋酸纤维素作为铝银粉定向剂，来提高铝银粉的排列取向，使得银幕的光反射角度在一定范围呈现高斯分布，进一步提高银幕的亮度增益。
具体实施方式
本发明提供一种银幕涂料，包含以下重量份的组份：
Figure PCTCN2019086929-appb-000003
本发明所有原料，对其来源没有特别限制，在市场上购买的或按照本领域技术人员熟知的常规方法制备的即可。
本发明相较于本发明相较于现有的银幕涂料，无需添加任何有机挥发性溶剂，大大减小了传统银幕涂料有机挥发溶剂对环境和人身安全的危害。
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。
所述环氧树脂为缩水甘油醚类环氧树脂、缩水甘油酯类环氧树脂、缩水甘油胺类环氧树脂中的一种或多种，环氧树脂为成膜材料，并具有较好的柔韧性，可进一步增加银幕的抗弯折力，实现银幕折叠运输。
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。
所述铝银粉可以为浮型或非浮型。所述铝银粉为片状，粒径为1μm-50μm，优选为1μm-20μm，进一步优选为2μm-20μm，更优选为2μm-10μm；所述铝银粉用于对光线进行反射，可提高银幕的光利用率，进一步提高银幕的光增益。
其中所述浮型铝银粉为漂浮型的鳞片状结构，浮于银幕的涂层表面；铝银粉为非浮型铝银粉时，非浮型铝银粉可均匀、平行地分布在整个银幕涂层中，由于树脂材料包覆，因此具有良好的抗氧化性、耐酸碱及耐磨性。
所述散射粒子为纳米二氧化钛、纳米二氧化硅、超微细碳酸钙中的一种或多种，所述散射粒子可提高光的均匀度，进一步提高银幕的可视角。
所述铝银粉定向剂为醋酸纤维素，可用于提高铝银粉的排列取向。传统的溶剂型银幕涂料在喷涂到银幕上之后，通过溶剂挥发成膜，溶剂挥发过程中产生的压力可以将膜层中的铝银粉挤压至规则排列取向，从而获得理想的窄视角，进一步提高银幕的增益。本发明通过添加醋酸纤维素作为铝银粉定向剂，来提高铝银粉的排列取向，以弥补未添加挥发溶剂引发的铝银粉不规则排列问题，使得银幕的光反射角度在一定范围呈现高斯分布，进一步提高银幕的亮度增益。
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、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、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。
所述光引发剂为在360nm-780nm的光辐射下具有活性的化合物，所述化合物为樟脑醌(CQ)、氟化二苯基二茂钛(Irgacure784)、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、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可见光波段的能量，以引发单体聚合交联固化。
本发明还提供一种如上所述的银幕涂料的制备方法，所述制备方法为：将如上所述的丙烯酸酯、环氧树脂、活性稀释剂、铝银粉、散射粒子、铝银粉定向剂、流平剂、消泡剂以及阻聚剂混合均匀后形成混合浆料，所述混合浆料可以在常温下储存待用；涂覆前，将所述混合浆料与光引发剂混合，形成无溶剂型环保银幕涂料。
若光引发剂添加过早可能会发生因避光不好而导致的涂料失效，在上料前加入光引发剂能够减小工艺风险。需要注意的是，加入光引发剂的过程中需要注意避光。
本发明还提供一种银幕的制备方法，所述制备方法包含：对银幕基材进行清洁处理；将无溶剂型环保银幕涂料涂覆在银幕基材后静置、流平及消泡；利用光固化银幕涂料；用溶剂清洗固化后的银幕涂料，除去表面未固化单体，常温干燥后成品。
具体地，将银幕涂料涂覆在银幕基材上可以采用喷涂、滚涂、刮涂、丝网印刷等方式。银幕涂料涂覆在银幕基材后的静置时间优选为30min-120min。所述光源优选为蓝色线性光源或者蓝紫色线性光源，光源固化时优选匀速运动辐照银幕涂料。
下面结合具体实施例对本发明进行详细介绍。
实施例一
将聚氨酯丙烯酸酯20重量份、缩水甘油醚类环氧树脂20重量份、己二醇二丙烯酸酯20重量份，1μm粒径大小的片状铝银粉20重量份、纳米二氧化钛2重量份，有机硅流平剂1重量份，醋酸纤维素1.5重量份，卵磷脂1.2重量份，对苯二酚1重量份按顺序依次加入到反应容器中，机械搅拌均匀待用。
取上述混合物树脂，加入1.5重量份光引发剂樟脑醌，避光下混合均匀。
以PET膜为基材，清洁完成后，将上述涂料通过丝网印刷方式均匀涂布其上，静置80min，采用445nm蓝色激光光源辐照涂膜直至固化成型，少量溶剂清洗，干燥后成品。
实施例二
将聚酯丙烯酸酯25重量份、缩水甘油胺类环氧树脂15重量份、己二醇二丙烯酸酯25重量份，10μm粒径大小的片状铝银粉23重量份、纳米二氧化硅3重量份，有机硅流平剂1.5重量份，醋酸纤维素1.5重量份，卵磷脂1.2重量份，对苯二酚1重量份按顺序依次加入到反应容器中，机械搅拌均匀待用。
取上述混合物树脂，加入3重量份光引发剂氟化二苯基二茂钛，避光下混合均匀。
以PET膜为基材，清洁完成后，将上述涂料通过刮涂方式均匀涂布其上，静置60min，采用405nm蓝紫色光源辐照涂膜直至固化成型，少量溶剂清洗，干燥后成品。
实施例三
将聚氨酯丙烯酸酯10重量份、缩水甘油醚类环氧树脂10重量份、己二醇二丙烯酸酯50重量份，5μm粒径大小的片状铝银粉25重量份、纳米二氧化钛2重量份，有机硅流平剂1重量份，醋酸纤维素1.5重量份，卵磷脂1.2重量份，对苯二酚1重量份按顺序依次加入到反应容器中，机械搅拌均匀待用。
取上述混合物树脂，加入2重量份光引发剂樟脑醌，避光下混合 均匀。
以PET膜为基材，清洁完成后，将上述涂料通过喷涂方式均匀涂布其上，静置30min，采用445nm蓝色光源辐照涂膜直至固化成型，少量溶剂清洗，干燥后成品。
实施例四
将聚醚丙烯酸酯10重量份、缩水甘油胺类环氧树脂10重量份、甲基丙烯酸甲酯20重量份，20μm粒径大小的片状铝银粉20重量份、超微细碳酸钙0.5重量份，氟碳流平剂0.1重量份，醋酸纤维素0.1重量份，有机硅酯0.1重量份，吩噻嗪0.1重量份按顺序依次加入到反应容器中，机械搅拌均匀待用。
取上述混合物树脂，加入0.1重量份光引发剂二芳基碘鎓盐，避光下混合均匀。
以PET膜为基材，清洁完成后，将上述涂料通过滚涂方式均匀涂布其上，静置30min，采用445nm蓝色光源辐照涂膜直至固化成型，少量溶剂清洗，干燥后成品。
实施例五
将环氧丙烯酸酯树脂25重量份、缩水甘油胺类环氧树脂25重量份、丙烯酸异辛酯50重量份，50μm粒径大小的片状铝银粉30重量份、超微细碳酸钙5重量份，氟碳流平剂5重量份，醋酸纤维素5重量份，乙醇3重量份，对羟基苯甲醚3重量份按顺序依次加入到反应容器中，机械搅拌均匀待用。
取上述混合物树脂，加入5重量份光引发剂烷基碘鎓盐，避光下混合均匀。
以PET膜为基材，清洁完成后，将上述涂料通过丝网印刷方式均匀涂布其上，静置120min，采用405nm蓝紫色光源辐照涂膜直至固化成型，少量溶剂清洗，干燥后成品。
综上所述，本发明银幕涂料由丙烯酸酯、环氧树脂、活性稀释剂、 铝银粉、散射粒子、铝银粉定向剂、流平剂、消泡剂、阻聚剂、光引发剂等主要组份组成，无需任何挥发性溶剂，在可见激光的辐照下即可快速固化成膜，所成形金属膜对基材附着力好，光学效果优异，且制备工艺简单，固化工艺环保。

Claims (10)

  1. 一种银幕涂料，其特征在于，所述银幕涂料包含以下重量份的组份：
    Figure PCTCN2019086929-appb-100001
    其中，所述活性稀释剂为甲基丙烯酸酯类化合物。
  2. 如权利要求1所述的银幕涂料，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所述的银幕涂料，其特征在于，所述环氧树脂为缩水甘油醚类环氧树脂、缩水甘油酯类环氧树脂或缩水甘油胺类环氧树脂中的一种或多种。
  4. 如权利要求1所述的银幕涂料，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。
  5. 如权利要求1所述的银幕涂料，其特征在于，所述铝银粉为浮 型或非浮型，所述铝银粉的粒径为1μm-50μm；
  6. 如权利要求5所述的银幕涂料，其特征在于，所述铝银粉的粒径为2μm-20μm。
  7. 如权利要求1所述的银幕涂料，其特征在于，所述散射粒子为纳米二氧化钛、纳米二氧化硅或超微细碳酸钙中的一种或多种。
  8. 如权利要求1所述的银幕涂料，其特征在于，所述铝银粉定向剂为醋酸纤维素；
    所述流平剂为有机硅流平剂或氟碳流平剂；
    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。
  9. 如权利要求1所述的银幕涂料，其特征在于，所述光引发剂在360nm-780nm的光辐射下具有活性。
  10. 如权利要求9所述的银幕涂料，其特征在于，所述光引发剂为樟脑醌、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。
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