CN116200085B - High-reflection photo-curing coating and preparation method and application thereof - Google Patents

High-reflection photo-curing coating and preparation method and application thereof Download PDF

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Publication number
CN116200085B
CN116200085B CN202310312756.9A CN202310312756A CN116200085B CN 116200085 B CN116200085 B CN 116200085B CN 202310312756 A CN202310312756 A CN 202310312756A CN 116200085 B CN116200085 B CN 116200085B
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acrylic resin
parts
coating
curing
reflection
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CN116200085A (en
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周鹏
沈渊
曹建
潘家鑫
胡耀忠
劳永杰
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Kaixinsen Shanghai Functional Film Industry Co ltd
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Kaixinsen Shanghai Functional Film Industry Co ltd
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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
    • 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
    • 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
    • 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
    • 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
    • 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

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  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Inorganic Chemistry (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

The invention provides a high-reflection photo-curing coating and a preparation method and application thereof, wherein the high-reflection photo-curing coating comprises the following components in parts by weight: 20-60 parts of first acrylic resin, 1-5 parts of second acrylic resin, 0.05-1 part of photoinitiator, 0.01-1 part of auxiliary agent, 5-15 parts of aluminum paste and 30-70 parts of solvent. The high-reflection photo-curing coating is matched with each other through the components, so that the formed coating is excellent in performance, high in reflectivity and fine in appearance, and the prepared projection film picture is excellent in display; when the method is applied to the preparation of the projection film, the continuous production can be realized, the production speed is more than 25M/min, the back and forth spraying is not needed for many times, the spraying stroke is not larger than the size of the material, the waste of the material is avoided, and the cost is reduced.

Description

High-reflection photo-curing coating and preparation method and application thereof
Technical Field
The invention belongs to the technical field of laser projection display preparation, and particularly relates to a high-reflection photo-curing coating, a preparation method and application thereof.
Background
The projection curtain is one of the necessary accessories for displaying the laser television, and no matter the projection curtain is used for traditional projection, intelligent projection and the laser television, the picture is shot onto the curtain or the wall surface by using light, and then is reflected into eyes by the curtain or the wall surface, so that the picture is seen by people. The display curtain is projected by ultra-short focal laser in the projection curtain, a circular Fresnel structure is needed, and then a micrometer-level reflective aluminum layer is needed to be coated on the circular Fresnel structure.
At present, the photo-curing coating generally contains an acrylic acid active monomer and acrylic acid resin at the same time, or an ultraviolet light absorber needs to be added, the components are complex, the reflectivity of a coating prepared by the photo-curing coating is low, and after the coating is coated on a projection film, the finished product picture is poor.
In the prior art, an aluminum layer is coated on a circular Fresnel structure mainly through spraying or printing, wherein the method for spraying aluminum comprises the following steps: the aluminum paste is uniformly sprayed on the surface of the material, and after the aluminum paste is sprayed on the whole surface of the material, the material is dried, and in order to improve the adhesive force, the material is generally baked for more than 30 minutes in an oven at more than 80 degrees. Because the spraying method adopts one-piece spraying, the spraying time is long, the production efficiency is lower, and the spraying adopts a plurality of back and forth spraying, in order to prevent uneven spraying, the spraying stroke can be larger than the material size, thereby causing the waste of aluminum paste. The method for printing aluminum comprises the following steps: and printing aluminum paste on the material in a screen printing mode, and drying the material after the aluminum paste is completely printed, wherein in order to improve the adhesive force, the material is generally baked for more than 30 minutes in an oven at more than 80 degrees. Because the printing method needs accurate alignment, the baking time is long, the production efficiency is low, and the screen marks exist after printing, so that the appearance is uneven.
In view of the above problems, it is important to develop a photocurable coating material excellent in performance, and a coating method which is efficient, low-cost, capable of continuous coating, and uniform in coating appearance.
Disclosure of Invention
The invention aims to provide a high-reflection photo-curing coating, a preparation method and application thereof, wherein the high-reflection photo-curing coating has high reflectivity and low cost, and the prepared projection film has fine appearance, excellent picture, continuous production and high production efficiency.
In order to achieve the aim of the invention, the invention adopts the following technical scheme:
In a first aspect, the invention provides a high-reflection photo-curing coating, which comprises the following components in parts by weight: 20-60 parts of first acrylic resin, 1-5 parts of second acrylic resin, 0.05-1 part of photoinitiator, 0.01-1 part of auxiliary agent, 5-15 parts of aluminum paste and 30-70 parts of solvent.
The high-reflection photo-curing coating has the advantages of low viscosity, quick curing and the like, and the prepared coating has excellent performance, high reflectivity and fine appearance through mutual matching of the components.
In the invention, the high-reflection photo-curing coating comprises the following components in parts by weight: the first acrylic resin is 20 to 60 parts by weight, and may be, for example, 20 parts, 24 parts, 28 parts, 30 parts, 35 parts, 40 parts, 45 parts, 50 parts, 55 parts, 60 parts, or the like; the weight part of the second acrylic resin is 1-5 parts, for example, 1 part, 2 parts, 3 parts, 4 parts, 5 parts, or the like; the weight portion of the photoinitiator is 0.05-1 portion, for example, 0.05 portion, 0.1 portion, 0.2 portion, 0.3 portion, 0.4 portion, 0.5 portion, 0.6 portion, 0.7 portion, 0.9 portion or 1 portion, etc.; the weight portion of the auxiliary agent is 0.01 to 1 portion, for example, 0.01 portion, 0.05 portion, 0.1 portion, 0.2 portion, 0.3 portion, 0.4 portion, 0.5 portion, 0.6 portion, 0.7 portion, 0.9 portion or 1 portion, etc.; the weight portion of the aluminum paste is 5-15, for example, 5, 6, 7, 9, 10, 11, 12, 14 or 15; the solvent may be 30 to 70 parts by weight, for example, 30 parts, 40 parts, 50 parts, 60 parts or 70 parts, etc., but not limited to the values recited, and other values not recited in the numerical range are equally applicable.
As a preferable technical scheme of the invention, the high-reflection photo-curing coating comprises the following components in parts by weight: 30-40 parts of first acrylic resin, 2-3 parts of second acrylic resin, 0.05-0.08 part of photoinitiator, 0.01-0.06 part of auxiliary agent, 7-10 parts of aluminum paste and 40-55 parts of solvent.
As a preferable embodiment of the present invention, the molecular weight of the first acrylic resin is not less than 50000g/mol, for example, 55000g/mol, 60000g/mol, 65000g/mol, 70000g/mol, 80000g/mol, etc., but not limited to the values recited, other non-recited values within the numerical range are equally applicable, and preferably 70000 to 125000g/mol.
Preferably, the Tg point of the first acrylic resin is not less than 80. DegreeC, for example, 85 ℃, 90 ℃, 95 ℃,100 ℃, 105 ℃ or 110 ℃ and the like, but not limited to the values listed, other values not listed in the numerical range are applicable, and preferably 95-105 ℃.
Preferably, the first acrylic resin comprises a thermoplastic acrylic resin, preferably a virgin acrylic resin.
The reason for selecting the thermoplastic acrylic resin is that: the thermoplastic resin has large molecular weight and good silver powder arrangement effect.
In the present invention, the pure propylene resin may be selected from a21, a11, a14, etc. of the dow chemical.
Preferably, the viscosity of the second acrylate resin is 50000-280000Cp, for example 70000Cp, 90000Cp, 100000Cp, 150000Cp, 200000Cp or 250000Cp, etc., but the viscosity is not limited to the recited values, and other non-recited values in the numerical range are equally applicable.
Preferably, the second acrylate resin comprises urethane acrylic resin.
The polyurethane acrylic resin is selected as follows: the hardness after curing is higher, and the scratch-resistant effect can be better.
In the present invention, the urethane acrylic may be selected from Songda SD1119, SD7919, changxing DR-U076 or DR-U145, etc.
Preferably, the polyurethane acrylic resin has a functional group number of 6 to 9, and may be, for example, 6, 7, 8 or 9.
As a preferred embodiment of the present invention, the photoinitiator comprises any one or a combination of at least two of 1-hydroxycyclohexyl phenyl ketone (PI 184), 2-methyl-1- (4-methylthiophenyl) -2-morpholino-1-propanone (PI 907), ethyl 2,4, 6-trimethylbenzoyl phenylphosphonate (PI TPO), benzophenone (PI BP), phenyl bis (2, 4, 6-trimethylbenzoyl) phosphine oxide (PI 819) or 2-hydroxy-2-methylpropenyl propanone (PI 1173), which combination typically, but not by way of limitation, comprises: a combination of 1-hydroxycyclohexyl phenyl ketone and 2-methyl-1- (4-methylthiophenyl) -2-morpholino-1-propanone, a combination of ethyl 2,4, 6-trimethylbenzoylphenylphosphonate and benzophenone or a combination of benzophenone and 2-hydroxy-2-methylpropionophenone, and the like.
Preferably, the adjuvants include silicone adjuvants and/or modified silicone adjuvants.
In the invention, the auxiliary agent comprises any one or a combination of at least two of BYK373, BYK315, BYK325, BYK331, BYK3500, BYK3510, BYK3530, BYK3535, BYK3570, BYK3575, ZG400, TEGO410 or TEGO450, preferably any one or a combination of at least two of BYK373, BYK315, BYK325, TEGO410 or TEGO 450.
Preferably, the aluminum paste comprises any one or a combination of at least two of silver aluminum paste, electroplated aluminum paste, or simulated electroplated aluminum paste, typically, but not limited to, comprising: the combination of silver aluminum paste and electroplated aluminum paste, the combination of electroplated aluminum paste and simulated electroplated aluminum paste, or the combination of silver aluminum paste, electroplated aluminum paste and simulated electroplated aluminum paste, etc., preferably electroplated aluminum paste and/or simulated electroplated aluminum paste.
Preferably, the solvent comprises any one or a combination of at least two of butyl acetate, acetone, methyl isobutyl ketone, isopropyl alcohol or toluene, typically but not limited to the combination comprising: butyl acetate and acetone, methyl isobutyl ketone and isopropyl alcohol or isopropyl alcohol and toluene, etc.
In a second aspect, the present invention provides a method for preparing the high-reflection photocurable coating according to the first aspect, the method comprising: and mixing the second acrylic resin with the photoinitiator, adding the first acrylic resin, the auxiliary agent, the aluminum paste and the solvent, mixing, and filtering to obtain the high-reflection photo-curing coating.
As a preferred embodiment of the present invention, the mixing means includes stirring.
Preferably, the stirring speed is 500-2000rpm, for example, 500rpm, 600rpm, 800rpm, 1000rpm, 1200rpm, 1400rpm, 1600rpm, 1800rpm or 2000rpm, etc., but not limited to the recited values, and other non-recited values within the numerical range are equally applicable.
Preferably, the stirring time is 30-120min, for example, 30min, 50min, 70min, 90min, 100min, 110min or 120min, etc., but not limited to the recited values, and other non-recited values in the range of values are equally applicable.
In the present invention, the filtering includes: the mixed material was filtered through a 200 mesh filter cloth.
In a third aspect, the present invention provides a use of the high-reflection photo-curable coating according to the first aspect, for the preparation of a projection film, comprising the steps of:
(1) Transferring the prepared high-reflection photo-curing coating to the surface of a projection film through a micro-concave coating roller coating to form a precoating layer;
(2) And (3) sequentially drying and photo-curing the precoating layer in the step (1) to obtain the projection film.
According to the invention, the high-reflection photo-curing coating is coated by the micro-concave coating roller, so that the high-reflection photo-curing coating is transferred onto a projection film structure, then the material enters a temperature increasing oven to volatilize a solvent, and then the whole surface of the projection film is irradiated by a UV lamp to completely cure the surface pre-coating, so that the prepared projection film has uniform and fine appearance, the preparation method can be used for continuous production, the production speed is above 25M/min, the back and forth spraying for many times is not needed, the spraying stroke is not larger than the size of the material, the waste of the material is avoided, and the cost is reduced.
In the invention, the projection film is firstly conveyed to the micro-concave coating roller through the unreeling device, and then the projection film is collected through the reeling device after photo-curing.
In a preferred embodiment of the present invention, the slant angle of the dimple coating roller in the step (1) is 60 ° -70 °, for example, 60 °, 62 °, 64 °, 66 °, 68 ° or 70 °, but not limited to the recited values, and other non-recited values in the numerical range are equally applicable.
Preferably, the slant line number of the micro-concave coating roller in the step (1) is 20-30inch, for example, 20inch, 22inch, 24inch, 26inch, 28inch or 30inch, etc., but the present invention is not limited to the listed values, and other non-listed values in the numerical range are equally applicable.
Preferably, the depth of the dimple coating roller in the step (1) is 200-300 μm, for example, 200 μm, 220 μm, 240 μm, 260 μm, 280 μm or 300 μm, etc., but not limited to the recited values, and other non-recited values in the numerical range are equally applicable.
In a preferred embodiment of the present invention, the transfer amount of the coating transfer in the step (1) is 30 to 50g, and may be, for example, 30g, 34g, 38g, 40g, 44g, 48g or 50g, etc., but not limited to the values recited, and other values not recited in the numerical range are equally applicable.
Preferably, the thickness of the precoat layer in step (1) is 40-60. Mu.m, for example 40 μm, 44 μm, 48 μm, 50 μm, 54 μm, 58 μm or 60 μm, etc., but not limited to the values recited, other values not recited in the numerical range are equally applicable.
Preferably, the reflectivity of the precoat layer in the step (1) is equal to or greater than 90%, for example, 90%, 91%, 92%, 93%, 94%, 95% or 98%, etc., but not limited to the recited values, and other non-recited values in the numerical range are equally applicable.
In a preferred embodiment of the present invention, the temperature of the drying in the step (2) is 75 to 80. DegreeC, for example, 75. DegreeC, 76. DegreeC, 77. DegreeC, 78. DegreeC, 79. DegreeC, 80. DegreeC, etc., but the present invention is not limited to the above-mentioned values, and other values not shown in the numerical range are applicable.
Preferably, the drying time in the step (2) is 40-100s, for example, 40s, 50s, 60s, 70s, 80s, 90s or 100s, but not limited to the recited values, and other non-recited values in the range of values are equally applicable.
Compared with the prior art that the baking is needed to be performed for more than 30 minutes at the temperature of more than 80 ℃, the invention greatly shortens the drying time.
Preferably, the photo-curing of step (2) comprises ultraviolet light curing.
Preferably, the ultraviolet light in the ultraviolet light curing is 320-400nm, for example, 320nm, 330nm, 340nm, 350nm, 360nm, 370nm, 380nm, 390nm or 400nm, etc., but not limited to the recited values, and other values not recited in the numerical range are equally applicable.
Preferably, the energy of the ultraviolet light curing is 150-300mj, for example, 150mj, 170mj, 200mj, 220mj, 240mj, 260mj, 280mj or 300mj, etc., but the energy is not limited to the recited values, and other non-recited values in the range of values are equally applicable.
The numerical ranges recited herein include not only the recited point values, but also any point values between the recited numerical ranges that are not recited, and are limited to, and for the sake of brevity, the invention is not intended to be exhaustive of the specific point values that the recited range includes.
Compared with the prior art, the invention has the following beneficial effects:
(1) The high-reflection photo-curing coating is formed by mutually matching the components, so that the coating has excellent performance, high reflectivity and fine appearance, and the prepared projection film picture is excellent in display;
(2) The preparation method of the projection film provided by the invention can realize continuous production, the production speed is above 25M/min, the back and forth spraying is not needed for many times, the spraying stroke is not larger than the material size, the waste of the material is avoided, and the cost is reduced.
Drawings
Fig. 1 is a flowchart of a method for preparing a projection film according to application example 1.
Detailed Description
The technical scheme of the invention is further described by the following specific embodiments. It will be apparent to those skilled in the art that the examples are merely to aid in understanding the invention and are not to be construed as a specific limitation thereof.
Example 1
The embodiment provides a high-reflection photo-curing coating and a preparation method thereof, wherein the high-reflection photo-curing coating comprises the following components in parts by weight: 40 parts of first acrylic resin, 3 parts of second acrylic resin, 0.07 part of photoinitiator (PI 184), 0.05 part of organosilicon auxiliary agent (BYK 373), 9 parts of electroplated aluminum paste (ZL-8000) and 50 parts of ethyl acetate;
the first acrylic resin is pure acrylic resin (Dow chemical A11), the molecular weight of the first acrylic resin is 125000g/mol, and the Tg point is 100 ℃; the second acrylic resin is polyurethane acrylic resin (Songda SD 1119), the functional group number is 9, and the viscosity is 200000Cp;
the preparation method of the high-reflection photo-curing coating comprises the following steps: stirring the second acrylic resin and the photoinitiator for 60min at the rotating speed of 1000rpm, then adding the first acrylic resin, the organosilicon additive, the electroplated aluminum silver paste and the ethyl acetate into the mixture, continuously stirring the mixture for 60min at the rotating speed of 1000rpm, and filtering the mixture through 200-mesh filter cloth after uniformly mixing the mixture to obtain the high-reflection photocuring coating.
Example 2
The embodiment provides a high-reflection photo-curing coating and a preparation method thereof, wherein the high-reflection photo-curing coating comprises the following components in parts by weight: 35 parts of first acrylic resin, 2 parts of second acrylic resin, 0.05 part of photoinitiator (PI TPO), 0.06 part of organosilicon additive (BYK 315), 8 parts of imitation electro-plating aluminum paste (ZF-5003A) and 40 parts of acetone;
The first acrylic resin is pure acrylic resin (A14), the molecular weight of the first acrylic resin is 70000g/mol, and the Tg point is 95 ℃; the second acrylic resin is polyurethane acrylic resin (Changxing DR-U076), the functional group number is 6, and the viscosity is 70000Cp;
The preparation method of the high-reflection photo-curing coating comprises the following steps: stirring the second acrylic resin and the photoinitiator for 80min at the rotation speed of 800rpm, then adding the first acrylic resin, the organosilicon auxiliary agent, the simulated electroplated aluminum paste and the acetone into the mixture, continuously stirring the mixture for 80min at the rotation speed of 800rpm, and filtering the mixture through 200-mesh filter cloth after uniformly mixing the mixture to obtain the high-reflection photocuring coating.
Example 3
The embodiment provides a high-reflection photo-curing coating and a preparation method thereof, wherein the high-reflection photo-curing coating comprises the following components in parts by weight: 50 parts of first acrylic resin, 5 parts of second acrylic resin, 0.09 part of photoinitiator (PI 819), 1 part of organosilicon additive (TEGO 410), 12 parts of electroplated aluminum silver paste (ZF-6103) and 60 parts of toluene;
The first acrylic resin is pure acrylic resin (A21), the molecular weight of the first acrylic resin is 120000g/mol, and the Tg is 105 ℃; the second acrylic resin is polyurethane acrylic resin (Changxing DR-U145), the functional group number is 6, and the viscosity is 60000Cp;
the preparation method of the high-reflection photo-curing coating comprises the following steps: stirring the second acrylic resin and the photoinitiator for 40min at the rotation speed of 2000rpm, then adding the first acrylic resin, the organosilicon additive, the electroplated aluminum silver paste and toluene into the mixture, continuously stirring the mixture for 40min at the rotation speed of 2000rpm, and filtering the mixture through 200-mesh filter cloth after the mixture is uniformly mixed to obtain the high-reflection photocuring coating.
Example 4
This example provides a highly reflective photo-curable coating and a method for preparing the same, except that the "pure acrylic resin" was replaced with "epoxy acrylic resin", the conditions were the same as in example 1.
Example 5
This example provides a highly reflective photocurable coating and a method of making the same as in example 1, except that the "urethane acrylic" was replaced with "polycarbonate acrylic".
Comparative example 1
This comparative example provides a photocurable coating and a process for its preparation, under the same conditions as in example 1, except that "pure propylene resin" was replaced with "o-phenylphenoxyethyl acrylate".
Comparative example 2
This comparative example provides a photocurable coating and a process for producing the same, except that the "35 parts of the first acrylic resin, 2 parts of the second acrylic resin" were replaced with the "37 parts of the first acrylic resin", all of which were the same as in example 1.
Comparative example 3
This comparative example provides a photocurable coating and a process for preparing the same, except that the "35 parts of the first acrylic resin, 2 parts of the second acrylic resin" are replaced with the "37 parts of the second acrylic resin", all of which are the same as in example 1.
Comparative example 4
The comparative example provides a photo-curable coating and a method for preparing the same, except that the photo-curable coating comprises the following components in parts by weight: the procedure of example 1 was repeated except that 70 parts of the first acrylic resin, 3 parts of the second acrylic resin, 0.07 part of the photoinitiator (PI 184), 0.05 part of the silicone additive (BYK 373), 9 parts of the electroplated aluminum paste (ZL-8000) and 20 parts of the ethyl acetate were used.
Comparative example 5
The comparative example provides a photo-curable coating and a method for preparing the same, except that the photo-curable coating comprises the following components in parts by weight: the procedure of example 1 was repeated except that 15 parts of the first acrylic resin, 3 parts of the second acrylic resin, 0.07 part of the photoinitiator (PI 184), 0.05 part of the silicone additive (BYK 373), 9 parts of the electroplated aluminum paste (ZL-8000) and 75 parts of the ethyl acetate were used.
Comparative example 6
The comparative example provides a photo-curable coating and a method for preparing the same, except that the photo-curable coating comprises the following components in parts by weight: the procedure of example 1 was repeated except that 46 parts of the first acrylic resin, 3 parts of the second acrylic resin, 0.07 part of the photoinitiator (PI 184), 0.05 part of the silicone additive (BYK 373), 3 parts of the electroplated aluminum paste (ZL-8000) and 20 parts of the ethyl acetate were used.
Comparative example 7
The comparative example provides a photo-curable coating and a method for preparing the same, except that the photo-curable coating comprises the following components in parts by weight: the procedure of example 1 was repeated except that 51 parts of the first acrylic resin, 3 parts of the second acrylic resin, 0.07 part of the photoinitiator (PI 184), 0.05 part of the silicone additive (BYK 373), 20 parts of the electroplated aluminum paste (ZL-8000) and 20 parts of the ethyl acetate were used.
Application examples 1 to 5
The application example provides a preparation method of a projection film, a flow chart of the preparation method is shown in fig. 1, and the preparation method comprises the following steps:
(1) Transferring the projection film to a micro-concave coating roller through an unreeling device, and transferring 40g of the high-reflection photo-curing coating prepared in the above examples 1-5 to the surface of the projection film through the micro-concave coating roller coating to form a precoat with the thickness of 50 μm;
The slant angle of the slightly concave coating roller in the step (1) is 65 degrees, the slant number is 25inch, and the depth is 250 mu m;
(2) And (3) drying the precoating layer in the step (1) at 80 ℃ for 60 seconds, then carrying out photo-curing under the conditions of 380nm of ultraviolet wavelength and 250mj of energy, and rolling to obtain the projection film.
Application example 6
The present application example provides a method for producing a projection film, which is the same as that of application example 1 except that 25g of the highly reflective photocurable coating material obtained in the above example 1 of step (1) is transferred onto the surface of the projection film by a gravure roll coating to obtain a precoat layer having a thickness of 30 μm.
Application example 7
The present application example provides a method for producing a projection film, which is the same as that of application example 1 except that 70g of the highly reflective photocurable coating material obtained in the above example 1 of step (1) was transferred onto the surface of the projection film by a gravure roll coating to obtain a precoat layer having a thickness of 80. Mu.m.
Comparative application examples 1 to 7
This comparative application example provides a method for producing a projection film, which is the same as application example 1 except that "40 g of the highly reflective photocurable coating material produced in examples 1-5" in step (1) is replaced with "the photocurable coating material produced in comparative examples 1-7".
The produced projection film was subjected to the test of production speed, finished picture and reflectance, and the test results are shown in table 1.
TABLE 1
From table 1, the following points can be found:
(1) The projection film prepared from the high-reflection photo-curing coating provided by the embodiments 1-3 has the reflectivity of more than 90%, the finished picture is excellent, the coating speed is more than 30M/min, and the production period is shortened;
(2) As can be seen from the comparison of application example 1 and application examples 4 to 5, application examples 4 to 5 are inferior in performance to application example 1, thereby indicating that: the projection film prepared by the first acrylic resin which is pure acrylic resin and the second acrylic resin which is polyurethane acrylic resin has better performance;
(3) As is clear from comparison of application example 1 and application examples 6 to 7, when the thickness of the applied precoat layer is too thin, the light transmittance is too high, resulting in a decrease in the reflectance of the produced projection film; when the thickness of the coated precoat is too thick, the leveling property of the picture becomes poor, resulting in poor picture of the produced projection film;
(4) As is clear from the comparison of application example 1 and comparative application examples 1 to 5, when the first acrylic resin is replaced with o-phenylphenoxyethyl acrylate, the production speed of the produced projection film is lowered due to the lowering of the leveling, and the arrangement of the aluminum layers is disordered, resulting in the lowering of the optical performance; when the raw material of the photo-curing coating does not contain the first acrylic resin or the second acrylic resin, the obtained projection film picture becomes poor due to too large viscosity difference; when the content of the first acrylic resin is too high or too low, the coating picture is abnormal, resulting in low reflectivity of the produced projection film;
(5) As is clear from comparison of application example 1 and comparative application examples 6 to 7, when the content of the aluminum paste is too low, the reflectance of the produced projection film is low due to insufficient aluminum reflection; when the content of the aluminum paste is too high, the prepared projection film has poor pictures and low coating speed because the aluminum layers are not arranged.
The applicant states that the detailed structural features of the present invention are described by the above embodiments, but the present invention is not limited to the above detailed structural features, i.e. it does not mean that the present invention must be implemented depending on the above detailed structural features. It should be apparent to those skilled in the art that any modifications of the present invention, equivalent substitutions of selected components of the present invention, addition of auxiliary components, selection of specific modes, etc., are within the scope of the present invention and the scope of the disclosure.

Claims (27)

1. The high-reflection photo-curing coating is characterized by comprising the following components in parts by weight: 20-60 parts of first acrylic resin, 1-5 parts of second acrylic resin, 0.05-1 part of photoinitiator, 0.01-1 part of auxiliary agent, 5-15 parts of aluminum paste and 30-70 parts of solvent;
The molecular weight of the first acrylic resin is more than or equal to 50000g/mol; the first acrylic resin is thermoplastic acrylic resin;
the viscosity of the second acrylic resin is 50000-280000Cp; the second acrylic resin is polyurethane acrylic resin.
2. The high-reflection photo-curing coating according to claim 1, wherein the high-reflection photo-curing coating comprises the following components in parts by weight: 30-40 parts of first acrylic resin, 2-3 parts of second acrylic resin, 0.05-0.08 part of photoinitiator, 0.01-0.06 part of auxiliary agent, 7-10 parts of aluminum paste and 40-55 parts of solvent.
3. The highly reflective photocurable coating according to claim 1 or 2, wherein the first acrylic resin has a molecular weight of 70000-125000g/mol.
4. The high reflection photocurable coating of claim 1, wherein said first acrylic resin has a Tg point of greater than or equal to 80 ℃.
5. The high reflection photocurable coating of claim 1, wherein said first acrylic resin has a Tg point of 95-105 ℃.
6. The high reflection photocurable coating of claim 1, wherein said first acrylic resin is a neat acrylic resin.
7. The high-reflection photocurable coating according to claim 1, wherein the urethane acrylic resin has a functional group number of 6-9.
8. The high reflection photocurable coating of claim 1, wherein said photoinitiator comprises any one or a combination of at least two of 1-hydroxycyclohexyl phenyl ketone, 2-methyl-1- (4-methylthiophenyl) -2-morpholino-1-propanone, ethyl 2,4, 6-trimethylbenzoyl phenylphosphonate, benzophenone, phenylbis (2, 4, 6-trimethylbenzoyl) phosphine oxide, or 2-hydroxy-2-methylpropenone.
9. The high reflection photocurable coating according to claim 1, characterized in that the auxiliary comprises a silicone auxiliary and/or a modified silicone auxiliary.
10. The high reflection photocurable coating of claim 1, wherein said aluminum paste comprises any one or a combination of at least two of silver white aluminum paste, electroplated aluminum paste, or simulated electroplated aluminum paste.
11. The high reflection photocurable coating of claim 1, wherein said solvent comprises any one or a combination of at least two of butyl acetate, acetone, methyl isobutyl ketone, isopropyl alcohol, or toluene.
12. A method of preparing the highly reflective photocurable coating according to any one of claims 1-11, said method comprising: and mixing the second acrylic resin with the photoinitiator, adding the first acrylic resin, the auxiliary agent, the aluminum paste and the solvent, mixing, and filtering to obtain the high-reflection photo-curing coating.
13. The method of claim 12, wherein the mixing comprises stirring.
14. The method of claim 13, wherein the rotational speed of the stirring is 500-2000rpm.
15. The method of claim 13, wherein the stirring is for a period of 30-120 minutes.
16. Use of the highly reflective photocurable coating according to any one of claims 1-11, in the preparation of a projection film, comprising the steps of:
(1) Transferring the prepared high-reflection photo-curing coating to the surface of a projection film through a micro-concave coating roller coating to form a precoating layer;
(2) And (3) sequentially drying and photo-curing the precoating layer in the step (1) to obtain the projection film.
17. The use according to claim 16, wherein the angle of inclination of the dimple coating rollers of step (1) is 60 ° -70 °.
18. The use according to claim 16, wherein the dimple applicator roll of step (1) has a diagonal line number of 20-30 inches.
19. The use according to claim 16, wherein the depth of the micro-gravure coating roll of step (1) is 200-300 μm.
20. The use according to claim 16, wherein the transfer amount of the coating transfer in step (1) is 30-50g.
21. The use according to claim 16, wherein the precoat layer of step (1) has a thickness of 40-60 μm.
22. The use according to claim 16, wherein the reflectance of the precoat of step (1) is not less than 90%.
23. The use according to claim 16, wherein the temperature of the drying in step (2) is 75-80 ℃.
24. The use according to claim 16, wherein the drying time of step (2) is 40-100s.
25. The use of claim 16, wherein the photo-curing of step (2) comprises uv-curing.
26. The use according to claim 25, wherein the wavelength of the ultraviolet light in the ultraviolet light curing is 320-400nm.
27. The use according to claim 25, wherein the uv light curing energy is 150-300mj.
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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101870846A (en) * 2010-07-20 2010-10-27 苏州皇冠涂料科技发展有限公司 High-performance ultraviolet cured colored paint and preparation method thereof
CN104194613A (en) * 2014-08-13 2014-12-10 江苏宏泰高分子材料有限公司 Recoatable UV-curing colored one-step-coating aluminum powder paint and preparation method thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101870846A (en) * 2010-07-20 2010-10-27 苏州皇冠涂料科技发展有限公司 High-performance ultraviolet cured colored paint and preparation method thereof
CN104194613A (en) * 2014-08-13 2014-12-10 江苏宏泰高分子材料有限公司 Recoatable UV-curing colored one-step-coating aluminum powder paint and preparation method thereof

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