CN112612175B - Miniature projection curtain and preparation process thereof - Google Patents
Miniature projection curtain and preparation process thereof Download PDFInfo
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- CN112612175B CN112612175B CN202011480866.9A CN202011480866A CN112612175B CN 112612175 B CN112612175 B CN 112612175B CN 202011480866 A CN202011480866 A CN 202011480866A CN 112612175 B CN112612175 B CN 112612175B
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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
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
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- Chemical & Material Sciences (AREA)
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Inorganic Chemistry (AREA)
- Overhead Projectors And Projection Screens (AREA)
Abstract
The invention relates to the technical field of projection screens, in particular to a micro projection screen and a preparation process thereof. The coating comprises a substrate layer, and a micro prism layer, a reflecting layer and a coating which are positioned on the substrate layer, wherein the coating comprises the following raw materials: the micro projection curtain comprises epoxy resin, a modifier, a toughening agent and a filler, wherein the modifier is used for modifying the epoxy resin, so that the moisture permeability of a coating can be reduced, the water resistance is improved, the impact strength and flexibility are improved, the heat resistance and the ageing resistance are enhanced, dibutyl phthalate and dioctyl 1, 2-phthalate have good compatibility with the epoxy resin, the coating has good comprehensive performance, water extraction resistance and high electrical performance and weather resistance, the dosage of the epoxy resin can be reduced by the filler, the cost is reduced, the selected filler plays a role in increasing the toughness and the impact resistance, and the heat resistance and the wear resistance of a product are improved.
Description
Technical Field
The invention relates to the technical field of projection screens, in particular to a micro projection screen and a preparation process thereof.
Background
The miniature projector makes the traditional huge projector exquisite, portable, miniaturized, entertaining and practical, so that the projection technology is closer to life and entertainment. The multifunctional business office machine has the functions of business office, teaching, business trip, personal entertainment, television replacement and the like;
the micro projection curtain is a tool used for displaying images and video files in the occasions of movies, offices, home theaters, large conferences and the like, the projection curtain commonly used in the market at present is divided into a reflection type projection curtain and a transmission type projection curtain, the reflection type projection curtain is used for front projection, the white plastic curtain, the gray curtain, the glass bead curtain, the metal curtain and the like, the transmission type projection curtain is used for rear projection, the transmission type projection curtain is used as an accessory of a projection device, the projection curtain has certain requirements, the projection curtain and the white plastic curtain are matched with each other, the requirements on the curtain are different due to different projection ambient light, for example, a static picture needs a high picture brightness point, a dynamic movie needs a good picture contrast, and the projection curtain needs to be properly matched with a projector to meet different requirements, so that a high-quality projection effect is obtained;
the existing micro projection curtain has high cost, low impact strength, poor heat resistance and aging resistance, and is not beneficial to long-time use, so that the defects of the prior art are overcome by the novel micro projection curtain.
Disclosure of Invention
The invention aims to provide a micro projection curtain and a preparation process thereof, which aim to solve the problems in the background technology.
In order to achieve the above object, in one aspect, the present invention provides a micro projection curtain, which comprises a substrate layer, and a micro prism layer, a reflective layer and a coating layer on the substrate layer, wherein the coating layer comprises the following raw materials: 20-30 parts of epoxy resin, 10-15 parts of modifier, 1-5 parts of toughening agent and 10-15 parts of filler.
As a further improvement of the technical scheme, the modifier is selected from at least one of polyisocyanate, silicone resin and polyester resin, and the epoxy resin is modified by the modifier, so that the moisture permeability of the coating can be reduced, the water resistance is increased, the impact strength and flexibility are improved, and the heat resistance is enhanced.
As a further improvement of the technical scheme, the toughening agent is at least one selected from dibutyl phthalate and dioctyl 1, 2-phthalate, has good compatibility with epoxy resin, good comprehensive performance, good mixing performance, high plasticizing efficiency, low volatility, good low-temperature flexibility, water extraction resistance, high electrical performance, good heat resistance and weather resistance, and better stability, flexibility resistance, cohesiveness and waterproofness than other plasticizers.
As a further improvement of the technical scheme, the filler is selected from at least one of graphite powder, talcum powder, quartz powder, silica gel powder and asbestos fiber, the filler is used for improving some properties of the product and improving the heat dissipation condition during resin curing, the use amount of epoxy resin can be reduced by using the filler, the cost is reduced, and the selected filler has the effects of increasing toughness and impact resistance and simultaneously improving the heat resistance and wear resistance of the product.
As a further improvement of the technical proposal, the substrate layer is selected from thermoplastic polyurethane elastomer rubber which is composed of rigid blocks obtained by the reaction of diphenylmethane diisocyanate or toluene diisocyanate and a chain extender and flexible chain segments obtained by the reaction of diisocyanate molecules such as diphenylmethane diisocyanate or toluene diisocyanate and macromolecular polyol, the thermoplastic polyurethane elastomer rubber can be used as a substitute for PVC in places using PVC, and the TPU has excellent high-tension, high-toughness and ageing-resistant characteristics and is a mature environment-friendly material The fabric has a plurality of excellent functions of wind prevention, cold prevention, antibiosis, mould prevention, warm keeping, ultraviolet resistance, energy release and the like.
As a further improvement of the technical scheme, the micro prism layer comprises a plurality of micro prisms, the micro prisms are ultraviolet-cured or thermosetting acrylic resin layers, and the thermoplastic acrylic resin is not further crosslinked in the film forming process, so that the thermoplastic acrylic resin has a large relative molecular weight, has good light and color retention, water and chemical resistance, is quick to dry, is convenient to construct, and is easy to construct, recoat and rework.
As a further improvement of the technical scheme, the reflecting layer is a full-dielectric reflecting film, and a film with the refractive index higher than that of the base material is plated on the optical surface, opposite to the antireflection film, so that the reflectivity of the optical surface can be increased, the simplest multilayer reflection is formed by alternately evaporating two materials with high and low refractive indexes, and the optical thickness of each film is one quarter of a certain wavelength.
On the other hand, the invention provides a preparation process of a micro projection curtain, which comprises any one of the micro projection curtain, and is characterized in that: the method comprises the following operation steps:
s1, spreading acrylic resin on the substrate layer, and forming a micro prism layer through high-temperature mould pressing;
s2, bonding the full dielectric reflection film and the micro prism layer through heating;
s3, mixing and stirring the epoxy resin, the modifier, the toughening agent and the filler to form a viscous coating;
and S4, uniformly coating the coating on the surface of the metal reflecting layer, drying and cooling to obtain the micro projection curtain.
Preferably, in the step S3, the stirring temperature is 60-80 ℃, and the stirring time is 15-30 min.
Preferably, in the step S4, the smearing temperature is 50-60 ℃.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the micro projection curtain and the preparation process thereof, the epoxy resin is modified by the modifier, so that the moisture permeability of the coating can be reduced, the water resistance is increased, the impact strength and flexibility are improved, and the heat resistance and the ageing resistance are enhanced.
2. In the micro projection curtain and the preparation process thereof, dibutyl phthalate and dioctyl 1, 2-phthalate have good compatibility with epoxy resin, good comprehensive performance, good mixing performance, high plasticizing efficiency, low volatility, good low-temperature flexibility, water extraction resistance, high electrical performance, good heat resistance and weather resistance, and better stability, flexibility resistance, cohesiveness and waterproofness than other plasticizers.
3. In the micro projection curtain and the preparation process thereof, the filler has the functions of improving some performances of the product and improving the heat dissipation condition during resin curing, the filler can also be used for reducing the using amount of epoxy resin and reducing the cost, and the selected filler has the functions of increasing the toughness and the impact resistance and simultaneously improves the heat resistance and the wear resistance of the product.
4. In the micro projection curtain and the preparation process thereof, the full dielectric reflecting film is opposite to the antireflection film, and the reflectivity of the optical surface can be increased by plating a film with the refractive index higher than that of the matrix material on the optical surface.
Drawings
Fig. 1 is an overall flow chart of embodiment 1.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Embodiment 1 a micro projection curtain and a process for preparing the same, comprising:
firstly, coating preparation
Mixing and stirring 20 parts of epoxy resin, 15 parts of modifier, 5 parts of flexibilizer and 15 parts of filler at the stirring temperature of 60-80 ℃ for 15-30min to form a coating;
secondly, projection curtain preparation
Spreading acrylic resin on the substrate layer, and forming a micro prism layer through high-temperature mould pressing; heating to attach the full dielectric reflecting film to the micro prism layer; adjusting the temperature to 50-60 ℃, uniformly coating the coating on the surface of the metal reflecting layer, drying and cooling to obtain the micro projection curtain.
Embodiment 2 a micro projection curtain and a process for preparing the same, comprising:
firstly, coating preparation
Mixing and stirring 22.5 parts of epoxy resin, 14 parts of modifier, 4 parts of toughening agent and 14 parts of filler at the stirring temperature of 60-80 ℃ for 15-30min to form a coating;
secondly, projection curtain preparation
Spreading acrylic resin on the substrate layer, and forming a micro prism layer through high-temperature mould pressing; heating to attach the full dielectric reflecting film to the micro prism layer; adjusting the temperature to 50-60 ℃, uniformly coating the coating on the surface of the metal reflecting layer, drying and cooling to obtain the micro projection curtain.
Embodiment 3 a micro projection curtain and a process for preparing the same, comprising:
firstly, coating preparation
Mixing and stirring 25 parts of epoxy resin, 13 parts of modifier, 3 parts of flexibilizer and 13 parts of filler at the stirring temperature of 60-80 ℃ for 15-30min to form a coating;
secondly, projection curtain preparation
Spreading acrylic resin on the substrate layer, and forming a micro prism layer through high-temperature mould pressing; heating to attach the full dielectric reflecting film to the micro prism layer; adjusting the temperature to 50-60 ℃, uniformly coating the coating on the surface of the metal reflecting layer, drying and cooling to obtain the micro projection curtain.
Embodiment 4 a micro projection curtain and a process for preparing the same, comprising:
firstly, coating preparation
Mixing and stirring 27.5 parts of epoxy resin, 11 parts of modifier, 2 parts of toughening agent and 12 parts of filler at the stirring temperature of 60-80 ℃ for 15-30min to form a coating;
secondly, projection curtain preparation
Spreading acrylic resin on the substrate layer, and forming a micro prism layer through high-temperature mould pressing; heating to attach the full dielectric reflecting film to the micro prism layer; adjusting the temperature to 50-60 ℃, uniformly coating the coating on the surface of the metal reflecting layer, drying and cooling to obtain the micro projection curtain.
Embodiment 5 a micro projection curtain and a process for making the same, comprising:
firstly, coating preparation
Mixing and stirring 30 parts of epoxy resin, 10 parts of modifier, 1 part of flexibilizer and 10 parts of filler at the stirring temperature of 60-80 ℃ for 15-30min to form a coating;
secondly, projection curtain preparation
Spreading acrylic resin on the substrate layer, and forming a micro prism layer through high-temperature mould pressing; heating to attach the full dielectric reflecting film to the micro prism layer; adjusting the temperature to 50-60 ℃, uniformly coating the coating on the surface of the metal reflecting layer, drying and cooling to obtain the micro projection curtain.
The modifier is selected from at least one of polyisocyanate, silicone resin and polyester resin, and the epoxy resin is modified by the modifier, so that the moisture permeability of the coating can be reduced, the water resistance is improved, the impact strength and flexibility are improved, and the heat resistance and the ageing resistance are enhanced;
the toughening agent is selected from at least one of dibutyl phthalate and dioctyl 1, 2-phthalate, has good compatibility with epoxy resin, has good comprehensive performance, good mixing performance, high plasticizing efficiency, low volatility, good low-temperature flexibility, water extraction resistance, high electrical performance, good heat resistance and weather resistance, and better stability, flexibility resistance, cohesiveness and waterproofness than other plasticizers;
the filler is selected from at least one of graphite powder, talcum powder, quartz powder, silica gel powder and asbestos fiber, the filler is used for improving some performances of the product and improving the heat dissipation condition during resin curing, the use amount of epoxy resin can be reduced by using the filler, the cost is reduced, the selected filler plays a role in increasing toughness and impact resistance, and the heat resistance and the wear resistance of the product are improved;
the basal layer is selected from thermoplastic polyurethane elastomer rubber which is formed by alternately reacting a rigid block obtained by reacting diphenylmethane diisocyanate or toluene diisocyanate with a chain extender and a flexible chain segment obtained by reacting diisocyanate molecules such as diphenylmethane diisocyanate or toluene diisocyanate with macromolecular polyol, the thermoplastic polyurethane elastomer rubber can be used as a substitute for PVC in places where PVC is used, the TPU has the characteristics of excellent high tension, toughness and aging resistance, and is a mature environment-friendly material Excellent functions such as antibiosis, mildew resistance, warm keeping, ultraviolet resistance, energy release and the like;
the micro prism layer comprises a plurality of micro prisms, the micro prisms are ultraviolet-cured or thermosetting acrylic resin layers, and the thermoplastic acrylic resin is not further crosslinked in the film forming process, so that the micro prism layer has a large relative molecular weight, and has good light and color retention, water and chemical resistance, quick drying, convenient construction and easy construction recoating and reworking;
the reflection layer is a full-dielectric reflection film, and a film with the refractive index higher than that of the base material is plated on the optical surface, so that the reflectivity of the optical surface can be increased.
The micro projection curtain prepared by the invention reduces the production cost of the projection curtain, improves the qualified rate of production quality, has good heat resistance and aging resistance effects, and has good impact strength, and the detection indexes of the micro projection curtain prepared by the invention are shown in table 1:
TABLE 1
| Impact strength (J/m) | Heat resistance temperature C | Degree of aging after 180 days | |
| Example 1 | 89 | 95 | No phenomenon |
| Example 2 | 92 | 94 | No phenomenon |
| Example 3 | 110 | 95 | No phenomenon |
| Example 4 | 103 | 94 | No phenomenon |
| Example 5 | 99 | 92 | No phenomenon |
As shown in Table 1, the micro projection screen prepared by the invention has no aging phenomenon in 180 days in examples 1-5, and when 25 parts of epoxy resin, 13 parts of modifier, 3 parts of toughener and 13 parts of filler, the projection screen has the best impact strength and the strongest heat resistance, so that the micro projection screen prepared by the material amount in example 3 has better comprehensive performance.
Comparative example 1 a micro projection screen and process for making the same, comprising:
firstly, coating preparation
Mixing and stirring 25 parts of epoxy resin, 3 parts of toughening agent and 13 parts of filler at the stirring temperature of 60-80 ℃ for 15-30min to form a coating;
secondly, projection curtain preparation
Spreading acrylic resin on the substrate layer, and forming a micro prism layer through high-temperature mould pressing; heating to attach the full dielectric reflecting film to the micro prism layer; adjusting the temperature to 50-60 ℃, uniformly coating the coating on the surface of the metal reflecting layer, drying and cooling to obtain the micro projection curtain.
Comparative example 2 a micro projection screen and process for making the same, comprising:
firstly, coating preparation
Mixing and stirring 25 parts of epoxy resin, 13 parts of modifier and 13 parts of filler at the stirring temperature of 60-80 ℃ for 15-30min to form a coating;
secondly, projection curtain preparation
Spreading acrylic resin on the substrate layer, and forming a micro prism layer through high-temperature mould pressing; heating to attach the full dielectric reflecting film to the micro prism layer; adjusting the temperature to 50-60 ℃, uniformly coating the coating on the surface of the metal reflecting layer, drying and cooling to obtain the micro projection curtain.
Comparative example 3 a micro projection screen and process for making the same, comprising:
firstly, coating preparation
Mixing and stirring 25 parts of epoxy resin, 13 parts of modifier and 3 parts of toughening agent at the stirring temperature of 60-80 ℃ for 15-30min to form a coating;
secondly, projection curtain preparation
Spreading acrylic resin on the substrate layer, and forming a micro prism layer through high-temperature mould pressing; heating to attach the full dielectric reflecting film to the micro prism layer; adjusting the temperature to 50-60 ℃, uniformly coating the coating on the surface of the metal reflecting layer, drying and cooling to obtain the micro projection curtain.
The micro prism layer comprises a plurality of micro prisms, the micro prisms are ultraviolet-cured or thermosetting acrylic resin layers, and the thermoplastic acrylic resin is not further crosslinked in the film forming process, so that the micro prism layer has a large relative molecular weight, and has good light and color retention, water and chemical resistance, quick drying, convenient construction and easy construction recoating and reworking;
the reflection layer is a full-dielectric reflection film, and a film with the refractive index higher than that of the base material is plated on the optical surface, so that the reflectivity of the optical surface can be increased.
The micro projection curtain prepared by the invention has good heat resistance and aging resistance, and simultaneously has good impact strength, and has a great relationship with a modifier, a toughening agent and a filling agent added into the micro projection curtain, and in order to verify the related technical scheme, the applicant performs the following tests:
comparative examples 1 to 3: by adopting the method of example 3, the relevant indexes of the prepared micro projection curtain are detected under the condition of removing the modifier, the toughening agent and the filler, and are specifically shown in table 2:
TABLE 2
| Impact strength (J/m) | Heat resistance temperature C | Degree of aging after 180 days | |
| Comparative example 1 | 52 | 50 | Yellow and gray |
| Comparative example 2 | 42 | 53 | No phenomenon |
| Comparative example 3 | 55 | 50 | No phenomenon |
| Example 3 | 110 | 95 | No phenomenon |
As shown in Table 2, in comparative examples 1 to 3, the impact strength of the projection screen is lower than 60J/m and the heat-resistant temperature is lower than 60 ℃ under the condition that the modifier, the toughening agent and the filler are removed, and the defects are obvious compared with example 3; in comparative example 1, the projection screen exhibited aging when the modifier was removed alone, and thus, it can be seen that the modifier, the toughener and the filler were important factors for changing the impact resistance, the heat resistance and the aging resistance of the micro-projection screen.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the present invention, which fall within the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (2)
1. A miniature projection curtain which characterized in that: the coating comprises a substrate layer, and a micro prism layer, a reflecting layer and a coating which are positioned on the substrate layer, wherein the coating comprises the following raw materials: 20-30 parts of epoxy resin, 10-15 parts of modifier, 1-5 parts of toughening agent and 10-15 parts of filler;
the modifier is selected from at least one of polyisocyanate, silicone resin and polyester resin;
the toughening agent is selected from at least one of dibutyl phthalate and dioctyl 1, 2-phthalate;
the filler is selected from at least one of graphite powder, talcum powder, quartz powder, silica gel powder and asbestos fiber;
the substrate layer is selected from thermoplastic polyurethane elastomer rubber;
the micro prism layer comprises a plurality of micro prisms, and the micro prisms are ultraviolet-cured or thermosetting acrylic resin layers;
the reflecting layer is a full dielectric reflecting film.
2. A process for preparing a micro projection screen, comprising the micro projection screen of claim 1,
the method is characterized in that: the method comprises the following operation steps:
s1, spreading acrylic resin on the base layer, and forming a micro prism layer through mould pressing;
s2, bonding the full dielectric reflection film and the micro prism layer through heating;
s3, mixing and stirring the epoxy resin, the modifier, the toughening agent and the filler to form a viscous coating;
s4, uniformly coating the coating on the surface of the metal reflecting layer, drying and cooling to obtain a micro projection curtain;
in the S3, the stirring temperature is 60-80 ℃, and the stirring time is 15-30 min;
in the S4, the coating temperature is 50-60 ℃.
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| CN104804516A (en) * | 2014-01-26 | 2015-07-29 | 北京中科纳通电子技术有限公司 | Graphene cover plate glass printing ink |
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| CN102794847A (en) * | 2011-05-24 | 2012-11-28 | Hoya株式会社 | Method for preparing thermosetting composition |
| CN108441037A (en) * | 2018-03-09 | 2018-08-24 | 芜湖影星巨幕有限公司 | A kind of screen optical coating formula and preparation method thereof suitable for digital film projector |
| JP2019199516A (en) * | 2018-05-15 | 2019-11-21 | ハリマ化成株式会社 | Coating agent for transparent screen, coating film for transparent screen, transparent screen, and manufacturing method of coating agent for transparent screen |
| CN108822325A (en) * | 2018-06-05 | 2018-11-16 | 张家港宝视特影视器材有限公司 | A kind of projection screen and preparation method thereof |
| JP2020122809A (en) * | 2019-01-29 | 2020-08-13 | セントラル硝子株式会社 | Coating liquid for forming visible light scattering film, and base material for forming visible light scattering film |
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| CN112612175A (en) | 2021-04-06 |
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