CN115403972A - Light-resistant curtain and preparation method thereof - Google Patents
Light-resistant curtain and preparation method thereof Download PDFInfo
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- CN115403972A CN115403972A CN202211094617.5A CN202211094617A CN115403972A CN 115403972 A CN115403972 A CN 115403972A CN 202211094617 A CN202211094617 A CN 202211094617A CN 115403972 A CN115403972 A CN 115403972A
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- light
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- resistant curtain
- curtain
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- 239000002270 dispersing agent Substances 0.000 claims abstract description 53
- 238000000576 coating method Methods 0.000 claims abstract description 48
- 239000011248 coating agent Substances 0.000 claims abstract description 46
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 42
- 239000000463 material Substances 0.000 claims abstract description 39
- 239000010954 inorganic particle Substances 0.000 claims abstract description 37
- 239000000758 substrate Substances 0.000 claims abstract description 35
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 33
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 32
- 230000031700 light absorption Effects 0.000 claims abstract description 32
- 239000000080 wetting agent Substances 0.000 claims abstract description 32
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 30
- 239000011347 resin Substances 0.000 claims abstract description 30
- 229920005989 resin Polymers 0.000 claims abstract description 30
- 239000008367 deionised water Substances 0.000 claims abstract description 28
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 28
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 70
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 62
- 239000000126 substance Substances 0.000 claims description 35
- 239000004408 titanium dioxide Substances 0.000 claims description 35
- 239000000377 silicon dioxide Substances 0.000 claims description 31
- 235000012239 silicon dioxide Nutrition 0.000 claims description 30
- 239000002245 particle Substances 0.000 claims description 29
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 16
- -1 phosphate ester salt Chemical class 0.000 claims description 14
- 238000002156 mixing Methods 0.000 claims description 13
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- 238000003756 stirring Methods 0.000 claims description 13
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- 235000021317 phosphate Nutrition 0.000 claims description 6
- 125000005375 organosiloxane group Chemical class 0.000 claims description 5
- 150000001298 alcohols Chemical class 0.000 claims description 4
- 150000008051 alkyl sulfates Chemical class 0.000 claims description 4
- 150000001408 amides Chemical class 0.000 claims description 4
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 claims description 4
- 150000002191 fatty alcohols Chemical class 0.000 claims description 4
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 4
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- 239000004793 Polystyrene Substances 0.000 claims description 3
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- 235000014113 dietary fatty acids Nutrition 0.000 claims description 3
- 239000000194 fatty acid Substances 0.000 claims description 3
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- 150000004665 fatty acids Chemical class 0.000 claims description 3
- 229930195733 hydrocarbon Natural products 0.000 claims description 3
- 150000002430 hydrocarbons Chemical class 0.000 claims description 3
- UCNNJGDEJXIUCC-UHFFFAOYSA-L hydroxy(oxo)iron;iron Chemical compound [Fe].O[Fe]=O.O[Fe]=O UCNNJGDEJXIUCC-UHFFFAOYSA-L 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
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- 229920001223 polyethylene glycol Polymers 0.000 claims description 3
- 229920002223 polystyrene Polymers 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims description 3
- 229920005573 silicon-containing polymer Polymers 0.000 claims description 2
- 230000003373 anti-fouling effect Effects 0.000 abstract description 7
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 239000004721 Polyphenylene oxide Chemical class 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
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- 239000004205 dimethyl polysiloxane Substances 0.000 description 2
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- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
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Images
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
-
- 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
- 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
- C09D7/47—Levelling agents
-
- 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
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/54—Accessories
- G03B21/56—Projection screens
- G03B21/60—Projection screens characterised by the nature of the surface
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
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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
- C08J2433/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Health & Medical Sciences (AREA)
- Inorganic Chemistry (AREA)
- Optics & Photonics (AREA)
- Laminated Bodies (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
The application discloses a light-resistant curtain and a preparation method thereof, wherein the light-resistant curtain comprises a substrate layer, a light absorption layer and a light reflection layer; the reflective layer coating comprises inorganic particles, a dispersing agent, a wetting agent, a defoaming agent, a flatting agent, film-forming material resin, a cross-linking agent and deionized water. The light-resistant curtain of this application has outstanding antifouling performance, and the light-resistant curtain of this application can have outstanding weatherability under extreme environment.
Description
Technical Field
The invention belongs to the technical field of projection screens, and relates to a light-resistant curtain and a preparation method thereof.
Background
The application of the anti-light curtain relates to a plurality of fields such as movies, education, households and businesses, and in recent years, along with the fact that laser televisions are increasingly attracted by people's squint and attention, the market of the anti-light curtain serving as other supporting products is also increasing. As one of light-resistant projection screens, a black grid projection screen mainly uses a physical structure of optical prism units, and a light absorbing layer is coated on a side of a prism facing ambient light, and a reflecting layer is coated on a side of the prism facing projection light, so as to suppress interference of the ambient light. For example, patent CN201811502113.6 provides a light-resistant curtain and a preparation method thereof, a substrate layer and an optical prism array arranged on the front surface of the substrate layer, wherein the upper side surface of the prism is provided with a light-absorbing roughened microstructure, and the lower side surface of the prism is coated with a light-reflecting coating. Patent CN201822061262.5 provides a high-contrast projection screen, in which a prism structure is formed on the front surface of a substrate layer, a roughened microstructure with light absorption is arranged on the upper side surface of the prism structure, and a reflective coating is coated on the lower side surface of the prism structure.
Most of the existing methods for manufacturing the grid projection screen are to respectively provide a light absorbing layer and a light reflecting layer on the upper surface and the lower surface of an optical prism structure, then manufacture a light-resistant screen to be fixed in various use scenes, and the light-resistant screen is an optical prism structure and comprises a continuous micro-unit structure, so that dust or water drops are easy to fall on the micro-unit structure after being placed in an environment for a long time, and particularly, the micro-unit structure falls on the light reflecting layer, so that the light reflecting effect is poor, and the projection effect is influenced. And the light-resistant curtain micro-unit structure is arranged in the environment, and the service life of the light reflecting layer can be reduced when the light-resistant curtain micro-unit structure meets the extreme environment.
In summary, how to provide a light-resistant curtain and a preparation method thereof becomes a problem to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a light-resistant curtain and a preparation method thereof, wherein the light-resistant curtain has excellent antifouling performance and excellent weather resistance under extreme environments.
In order to achieve the above purpose, the invention provides the following technical scheme: the light-resistant curtain comprises a light-reflecting layer, wherein the light-reflecting layer is formed by curing the following light-reflecting coating, and the light-reflecting coating comprises the following substances in parts by weight:
40-60 parts of inorganic particles
0.5 to 1.0 portion of dispersant
0.1 to 0.5 portion of wetting agent
0.1 to 0.5 portion of antifoaming agent
0.5 to 1.0 portion of flatting agent
20-40 parts of film forming material resin
1.0 to 3.0 portions of cross-linking agent
10-20 parts of deionized water;
wherein, the inorganic particles are a mixture of silicon dioxide and titanium dioxide, and the proportion of the silicon dioxide to the titanium dioxide is 1: (2-10).
As an improved technical scheme of the application, the particle size of the titanium dioxide is 200-700 nanometers, and the particle size of the silicon dioxide is 50-200 nanometers.
As an improved technical scheme of the application, the dispersing agent is one or more of polyester dispersing agent, oligomeric soap dispersing agent and polymer dispersing agent in any weight ratio; the polyester dispersant is modified polyester; the oligomeric soap dispersing agent is one or more of sodium polycarboxylate, phosphate ester salt and polycaprolactopolyol-polyethyleneimine segmented copolymer in any weight ratio; the macromolecular dispersant is one or two of polystyrene and polyethylene glycol in any weight ratio.
As an improved technical scheme of the application, the wetting agent is one or more of alkyl sulfate, sulfonate, polyoxyethylene alkylphenol ether and polyoxyethylene fatty alcohol ether in any weight ratio.
As an improved technical scheme of the application, the defoaming agent is one or more of higher alcohols, fatty acids and salts thereof, phosphates, hydrocarbon oils, polyethers, organic silicon polymers and amides in any weight ratio.
As an improved technical scheme of the application, the leveling agent is one or more of polydimethylsiloxane modified siloxane, polyether polyester modified organosiloxane and alkyl modified organosiloxane in any weight ratio.
As an improved technical scheme, the film forming material resin is water-based acrylic resin, and the cross-linking agent is aliphatic polyisocyanate.
As the improved technical scheme, the substrate layer is an optical prism array, the optical prism array is formed by closely arranging a plurality of prisms, and the cross section of each prism along the horizontal direction is triangular.
As improved technical scheme of this application, including substrate layer, reflection of light layer and light-absorbing layer, the downside of the triangle-shaped prism of reflection of light layer coating in the substrate layer, the side of going up of the triangle-shaped prism of light-absorbing layer coating in the substrate layer, the light-absorbing layer is a light-absorbing material.
As an improved technical scheme of the application, the thickness of the light absorption layer is smaller than that of the reflection layer.
Another object of the present application is to provide a method for preparing a light-resistant curtain, comprising:
a preparation of a substrate layer
Patterning the base material through a stamping roller to form a prism array with a triangular cross section along the horizontal direction to obtain a base material layer;
b preparation of the light-absorbing layer
Selecting black TPU material or coating carbon black, iron black and other light absorption materials to obtain a light absorption layer or a light absorption layer coating;
c preparing a light-reflecting layer
Sequentially and respectively adding deionized water, a dispersing agent, a wetting agent, inorganic particles, a defoaming agent, film forming material resin, a flatting agent and a crosslinking agent according to the proportion, mixing and stirring to prepare a reflective layer coating;
d obtaining light-resistant curtain
And respectively coating the light absorbing layer and the light reflecting layer on the upper side surface and the lower side surface of the triangular prism to obtain the light-resistant curtain.
Has the beneficial effects that:
1. according to the technical scheme, the reflective layer coating provided by the technical scheme of the invention comprises inorganic particles, a dispersing agent, a wetting agent, a defoaming agent, a leveling agent, a film forming resin, a cross-linking agent and deionized water, wherein an anti-fouling reflective layer with an excellent weather-resistant structure is formed after curing, and meanwhile, the inorganic particles in the reflective layer coating and the modified organic silicon leveling agent can interact with each other, so that the key technical point for solving the technical problems in the background art is achieved.
2. According to the invention, silicon dioxide particles are added into the reflective layer, and the dosage ratio of titanium dioxide to silicon dioxide is controlled (2-10): 1, mixing a certain amount of silicon dioxide under the condition that titanium dioxide is used as a main body, improving the reflection effect by utilizing the high whiteness of the titanium dioxide, and enabling the surface of the reflecting layer to be more compact and finer and cleaner by utilizing the high fluidity and small size effect of the silicon dioxide, so that the reflecting layer coating has antifouling performance on the premise of not influencing the reflection effect.
3. The invention provides an anti-light curtain and a preparation method thereof, and the anti-light curtain improves the weather resistance of a reflective layer by adding silicon dioxide particles in the reflective layer, and can not cause the falling and yellowing of the reflective layer in a high-temperature or high-humidity environment.
4. The invention provides a light-resistant curtain and a preparation method thereof, wherein a modified organic silicon flatting agent is added into a reflecting layer, so that the surface tension of a coating liquid of the reflecting layer is reduced, the surface flowing capability is controlled, and the smoothness of the surface of the reflecting layer is further improved, thereby further improving the antifouling performance.
It should be understood that all combinations of the foregoing concepts and additional concepts described in greater detail below can be considered as part of the inventive subject matter of this disclosure unless such concepts are mutually inconsistent.
The foregoing and other aspects, embodiments and features of the present teachings can be more fully understood from the following description taken in conjunction with the accompanying drawings. Additional aspects of the present invention, such as features and/or advantages of exemplary embodiments, will be apparent from the description which follows, or may be learned by practice of the specific embodiments according to the teachings of the present invention.
Drawings
The drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures may be represented by a like numeral. For purposes of clarity, not every component may be labeled in every drawing. Embodiments of various aspects of the present invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a schematic view of a light-resistant curtain structure;
in the figure, 1, a substrate layer; 2. a light absorbing layer; 3. a light reflecting layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without inventive step, are within the scope of protection of the invention. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs.
A light-resistant curtain comprises a substrate layer, a light absorption layer and a light reflection layer; the reflective layer coating comprises inorganic particles, a dispersing agent, a wetting agent, a defoaming agent, a flatting agent, film forming resin, a cross-linking agent and deionized water, and the content of each component is as follows: 40-60 parts of inorganic particles, 0.5-1 part of dispersing agent, 0.1-0.5 part of wetting agent, 0.1-0.5 part of defoaming agent, 0.5-1 part of flatting agent, 20-40 parts of film forming material resin, 1-3 parts of cross-linking agent and 10-20 parts of deionized water.
Wherein, the inorganic particles are a mixture of titanium dioxide and silicon dioxide, and the proportion of the titanium dioxide to the silicon dioxide is (2-10): 1, illustrating one of the following ratios 2. Preferably, the ratio of the titanium dioxide to the silicon dioxide is 4 to 1 or 5, the titanium dioxide has a particle size of 200-700 nm, the titanium dioxide particles can be agglomerated due to an excessively large particle size, and the silicon dioxide has a particle size of 50-200 nm, and the particle size is equal to or less than that of the titanium dioxide, so that the titanium dioxide can be uniformly dispersed in the titanium dioxide coating liquid, and the surface can be more compact and clean.
The dispersant is one or more of polyester dispersant, oligomeric soap dispersant and polymer dispersant. The polyester-based dispersant is modified polyester, and is exemplified by: HS-240, synsheng chemical (polyester dispersant); the oligomeric soap dispersant is one or more of sodium polycarboxylate, phosphate ester salt and polyhexamethylene lactone polyol-polyethyleneimine block copolymer in any weight ratio, and SN-5040, nopock (oligomeric soap dispersant) are exemplified; the polymer dispersant is one or more of polystyrene and polyethylene glycol in any weight ratio, such as BYK-110, germany Bick (polymer dispersant), KP-110 and Deyu (polymer dispersant). Because the addition amount of the inorganic particles is large, the mutual aggregation and sedimentation of the inorganic particles can be avoided by adding the dispersing agent.
The wetting agent is one or more of alkyl sulfate, sulfonate, polyoxyethylene alkylphenol ether and polyoxyethylene fatty alcohol ether in any weight ratio. Example (a): EAC-70, ministerial chemical (alkyl sulfate), 2A1, dow chemical (sulfonate), OP-10P, aloe chemical (polyoxyethylene alkylphenol ether), AE0-7, basf (polyoxyethylene fatty alcohol ether); because the added inorganic particles have smaller particle size, the surface energy of the inorganic particles is reduced by adding the wetting agent, so that the inorganic particles can be more easily wetted by water. The wetting agent is added before inorganic particles are added, so that the addition amount of deionized water is reduced, the solid content of the reflective layer coating is improved, and the solid content of the reflective layer coating is 60-80%.
The defoaming agent is one or more of higher alcohols, fatty acids and salts thereof, phosphates, hydrocarbon oils, polyethers, organic silicon polymers and amides in any weight ratio. Example (c): d-80, field chemical (higher alcohols), DF-103, dow chemical (polyethers), AFE-1520, dow Corning (Silicone Polymer), KYC-713, keying chemical (amides). Since the light-reflecting layer is an aqueous system, bubbles generated by stirring can be reduced by adding a defoaming agent. Preferably, the defoaming agent is selected from polyethers and organic silicon polymers to achieve better effects.
The leveling agent is one or more of polydimethylsiloxane modified siloxane, polyether polyester modified organosiloxane and alkyl modified organosiloxane. Example (c): JF-203, shanjia chemical industry (polydimethyl modified siloxane), DC-57, daokangning (alkyl modified organosiloxane), BYK-333, pick chemical industry (polyether polyester modified organosiloxane), can reduce the surface tension of the coating liquid of the reflecting layer and control the surface flowing ability by adding a leveling agent, and the leveling agent is modified organic silicon and can improve the smoothness of the surface of a film-forming object.
The film forming material resin is water-based acrylic resin, and the cross-linking agent is aliphatic polyisocyanate.
The substrate layer be optical prism array, optical prism array adopts a plurality of prism closely to arrange and forms, the cross-section of prism along the horizontal direction is triangle-shaped. Preferably, the material of the base material layer is a black TPU film.
As shown in fig. 1, the light-resistant curtain comprises a substrate layer 1, a reflecting layer 2 and a light-absorbing layer 3, wherein the reflecting layer is coated on the lower side surface of a triangular prism in the substrate layer, the light-absorbing layer is coated on the upper side surface of the triangular prism in the substrate layer, and the light-absorbing layer is a light-absorbing material. The thickness of the light absorption layer is smaller than that of the reflection layer, the light absorption layer and the reflection layer are coated on the upper side and the lower side of the triangular prism respectively, the light absorption layer plays a role in resisting external stray light, the reflection layer plays a role in reflecting projection, and in order to achieve a better projection effect, the thickness of the light absorption layer is smaller than that of the reflection layer.
Another object of the present application is to provide a method for preparing a protective film, comprising:
a preparation of the substrate layer
Patterning the base material through a stamping roller to form a prism array with a triangular cross section along the horizontal direction, so as to obtain a base material layer;
b preparation of the light-absorbing layer
And selecting black TPU material or coating carbon black, iron black and other light absorption materials to obtain the light absorption layer or the light absorption layer coating.
C preparing a light-reflecting layer
Sequentially and respectively adding deionized water, a dispersing agent, a wetting agent, inorganic particles, a defoaming agent, film-forming material resin, a flatting agent and a crosslinking agent, mixing and stirring to prepare a reflective layer coating;
d obtaining light-resistant curtain
And respectively coating the light absorbing layer and the light reflecting layer on the upper side surface and the lower side surface of the triangular prism to obtain the light-resistant curtain.
The technical solution of the present application will be clearly and completely described below with reference to specific implementations.
Example 1
Firstly, preparing a reflective layer, weighing 10 parts of deionized water, 40 parts of inorganic particles (titanium dioxide: silicon dioxide =4, titanium dioxide particle size 200 nm and silicon dioxide particle size 50 nm), 0.5 part of dispersing agent (HS-240, heshenyuanchen chemical industry), 0.1 part of wetting agent (EAC-70, lichen chemical industry), 0.1 part of defoaming agent (D-80, field chemical industry), 0.5 part of flatting agent (DC-57, dow Corning), 20 parts of film forming material resin (water-based acrylic resin) and 1 part of crosslinking agent (aliphatic polyisocyanate), and adding deionized water, dispersing agent, wetting agent, inorganic particles, defoaming agent, film forming material resin, flatting agent and crosslinking agent in sequence, mixing and stirring to prepare the reflective layer coating.
And then preparing a substrate layer, heating and softening the black TPU film to a molten state, performing patterning treatment through a stamping roller to form a prism array with a triangular cross section along the horizontal direction to obtain the substrate layer, and finally coating a light absorption layer and a light reflection layer on the upper side and the lower side of the triangular prism respectively, wherein the thickness of the light absorption layer is smaller than that of the light reflection layer to obtain the light-resistant curtain.
Example 2
Firstly, preparing a reflective layer, weighing 15 parts of deionized water, 50 parts of inorganic particles (titanium dioxide: silica =2, the particle size of titanium dioxide is 300 nanometers, and the particle size of silicon dioxide is 100 nanometers), 0.7 part of dispersing agent (SN-5040, nopulidae), 0.3 part of wetting agent (2A 1 Dow chemical 0.1 part, EAC-70 Lichen chemical 0.2 part), 0.25 part of defoaming agent (DF-103, dow chemical), 0.6 part of flatting agent (JF-203, jia chemical), 30 parts of film forming material resin (water-based acrylic resin), and 2.1 parts of cross-linking agent (aliphatic polyisocyanate), and adding the deionized water, the dispersing agent, the wetting agent, the inorganic particles, the defoaming agent, the film forming material resin, the flatting agent and the cross-linking agent in sequence, mixing and stirring to prepare the reflective layer coating.
And then preparing a substrate layer, heating and softening the black TPU film to a molten state, performing patterning treatment through a stamping roller to form a prism array with a triangular cross section along the horizontal direction to obtain the substrate layer, and finally coating a light absorption layer and a light reflection layer on the upper side and the lower side of the triangular prism respectively, wherein the thickness of the light absorption layer is smaller than that of the light reflection layer to obtain the light-resistant curtain.
Example 3
Firstly, preparing a reflective layer, weighing 12 parts of deionized water, 56 parts of inorganic particles (titanium dioxide: silicon dioxide =5, titanium dioxide particle size 400 nm and silicon dioxide particle size 150 nm), 0.7 part of dispersing agent (BYK-110 and Germany Bike), 0.2 part of wetting agent (OP-10P and Donghui chemical industry), 0.15 part of defoaming agent (AFE-1520 Tuoning, 0.1 part of DF-103 Dow chemical industry), 0.65 part of flatting agent (BYK-333 Bike chemical industry, 0.55 part of JF-203 Shanghai chemical industry), 26 parts of film forming resin (water-based acrylic resin) and 1.7 parts of crosslinking agent (aliphatic polyisocyanate) in sequence, and adding deionized water, dispersing agent, wetting agent, inorganic particles, defoaming agent, film forming resin, crosslinking agent and mixing and stirring to prepare the reflective layer coating.
And then preparing a substrate layer, heating and softening the black TPU film to a molten state, performing patterning treatment through a stamping roller to form a prism array with a triangular cross section along the horizontal direction to obtain the substrate layer, and finally coating a light absorption layer and a light reflection layer on the upper side and the lower side of the triangular prism respectively, wherein the thickness of the light absorption layer is smaller than that of the light reflection layer to obtain the light-resistant curtain.
Example 4
Firstly, preparing a reflective layer, weighing 17 parts of deionized water, 55 parts of inorganic particles (titanium dioxide: silicon dioxide =5, titanium dioxide particle size 500 nm and silicon dioxide particle size 150 nm), 0.9 part of dispersing agent (HS-240, heshengyuan chemical industry), 0.4 part of wetting agent (AE 0-7, baffs), 0.35 part of defoaming agent (KYC-713, science filling chemistry), 0.8 part of flatting agent (DC-57, dow Corning), 35 parts of film forming material resin (water-based acrylic resin) and 2.5 parts of crosslinking agent (aliphatic polyisocyanate), and adding deionized water, dispersing agent, wetting agent, inorganic particles, defoaming agent, film forming material resin, flatting agent and crosslinking agent in sequence, mixing and stirring to prepare the reflective layer coating.
And then preparing a substrate layer, heating and softening the black TPU film to a molten state, performing patterning treatment through a stamping roller to form a prism array with a triangular cross section along the horizontal direction to obtain the substrate layer, and finally coating a light absorption layer and a light reflection layer on the upper side and the lower side of the triangular prism respectively, wherein the thickness of the light absorption layer is smaller than that of the light reflection layer to obtain the light-resistant curtain.
Example 5
Firstly, preparing a reflective layer, weighing 20 parts of deionized water, 60 parts of inorganic particles (titanium dioxide: silicon dioxide =10, titanium dioxide particle size 700 nm, silicon dioxide particle size 200 nm), 1 part of dispersing agent (HS-240, heshenyuanyuan chemical industry), 0.5 part of wetting agent (EAC-70, lichen chemical industry), 0.5 part of defoaming agent (D-80, field chemical industry), 1 part of flatting agent (DC-57, dow Corning), 40 parts of film forming material resin (water-based acrylic resin) and 3 parts of cross-linking agent (aliphatic polyisocyanate), and adding deionized water, dispersing agent, wetting agent, inorganic particles, defoaming agent, film forming material resin, flatting agent and cross-linking agent in sequence, mixing and stirring to prepare the reflective layer coating.
And finally, coating a light absorbing layer and a light reflecting layer on the upper side and the lower side of the triangular prism respectively, wherein the thickness of the light absorbing layer is smaller than that of the light reflecting layer, and thus obtaining the light-resistant curtain.
Comparative example 1
Firstly, preparing a reflective layer, weighing 10 parts of deionized water, 40 parts of inorganic particles (titanium dioxide, titanium dioxide particle size of 200 nanometers), 0.5 part of dispersing agent (HS-240, heshenyuan chemical industry), 0.1 part of wetting agent (EAC-70, lichen chemical industry), 0.1 part of defoaming agent (D-80, field chemical industry), 0.5 part of flatting agent (DC-57, dow Corning), 20 parts of film forming material resin (water-based acrylic resin) and 1 part of crosslinking agent (aliphatic polyisocyanate), and adding deionized water, dispersing agent, wetting agent, inorganic particles, defoaming agent, film forming material resin, flatting agent and crosslinking agent in sequence, mixing and stirring to prepare the reflective layer coating.
And then preparing a substrate layer, heating and softening the black TPU film to a molten state, performing patterning treatment through a stamping roller to form a prism array with a triangular cross section along the horizontal direction to obtain the substrate layer, and finally coating a light absorption layer and a light reflection layer on the upper side and the lower side of the triangular prism respectively, wherein the thickness of the light absorption layer is smaller than that of the light reflection layer to obtain the light-resistant curtain.
Comparative example 2
Firstly, preparing a reflective layer, weighing 10 parts of deionized water, 40 parts of inorganic particles (titanium dioxide: silicon dioxide =15, titanium dioxide particle size 200 nm and silicon dioxide particle size 50 nm), 0.5 part of dispersing agent (HS-240, heshenyuanchen chemical industry), 0.1 part of wetting agent (EAC-70, lichen chemical industry), 0.1 part of defoaming agent (D-80, field chemical industry), 0.5 part of flatting agent (DC-57, dow Corning), 20 parts of film forming material resin (water-based acrylic resin) and 1 part of crosslinking agent (aliphatic polyisocyanate), and adding deionized water, dispersing agent, wetting agent, inorganic particles, defoaming agent, film forming material resin, flatting agent and crosslinking agent in sequence, mixing and stirring to prepare the reflective layer coating.
And finally, coating a light absorbing layer and a light reflecting layer on the upper side and the lower side of the triangular prism respectively, wherein the thickness of the light absorbing layer is smaller than that of the light reflecting layer, and thus obtaining the light-resistant curtain.
Comparative example 3
Firstly, preparing a reflective layer, weighing 10 parts of deionized water, 40 parts of inorganic particles (titanium dioxide: silicon dioxide =4, titanium dioxide particle size 1 micron, silicon dioxide particle size 2 micron), 0.5 part of dispersing agent (HS-240, heshenyuanchen chemical industry), 0.1 part of wetting agent (EAC-70, lichen chemical industry), 0.1 part of defoaming agent (D-80, field chemical industry), 0.5 part of flatting agent (DC-57, dow Corning), 20 parts of film forming material resin (water-based acrylic resin) and 1 part of crosslinking agent (aliphatic polyisocyanate), and adding deionized water, dispersing agent, wetting agent, inorganic particles, defoaming agent, film forming material resin, flatting agent and crosslinking agent in sequence, mixing and stirring to prepare the reflective layer coating.
And then preparing a substrate layer, heating and softening the black TPU film to a molten state, performing patterning treatment through a stamping roller to form a prism array with a triangular cross section along the horizontal direction to obtain the substrate layer, and finally coating a light absorption layer and a light reflection layer on the upper side and the lower side of the triangular prism respectively, wherein the thickness of the light absorption layer is smaller than that of the light reflection layer to obtain the light-resistant curtain.
Comparative example 4
Firstly, preparing a reflective layer, weighing 10 parts of deionized water, 40 parts of inorganic particles (titanium dioxide: silicon dioxide =4, titanium dioxide particle size 200 nm and silicon dioxide particle size 50 nm), 0.5 part of dispersing agent (HS-240, synsheng metachemistry), 0.1 part of wetting agent (EAC-70, lichen chemistry), 0.1 part of defoaming agent (D-80, field chemistry), 0.5 part of flatting agent (non-modified organic silicon, acrylic acid modified copolymer, 8090, japan ponding), 20 parts of film forming material resin (water-based acrylic resin) and 1 part of crosslinking agent (aliphatic polyisocyanate), and adding deionized water, dispersing agent, wetting agent, inorganic particles, defoaming agent, film forming material resin, flatting agent and crosslinking agent in sequence, mixing and stirring to prepare the reflective layer coating.
And then preparing a substrate layer, heating and softening the black TPU film to a molten state, performing patterning treatment through a stamping roller to form a prism array with a triangular cross section along the horizontal direction to obtain the substrate layer, and finally coating a light absorption layer and a light reflection layer on the upper side and the lower side of the triangular prism respectively, wherein the thickness of the light absorption layer is smaller than that of the light reflection layer to obtain the light-resistant curtain.
Comparative example 5
Commercially available light-resistant curtains (taiwan and zhu black curtains) were obtained.
The evaluation method comprises the following steps:
antifouling performance: after the colored powders were scattered on the screen of the light-resistant curtains prepared in examples and comparative examples, respectively, the surface powder residue of the light-resistant curtain was observed, and the image appearance of the light-resistant curtain was observed by projecting using a laser projector.
Weather resistance: the light-resistant curtains prepared in examples and comparative examples were placed in a high-temperature high-humidity chamber (85 ℃ C., 85% rh) for 1000 hours, and then the appearance of the light-resistant curtain reflection layer was observed after taking out.
The evaluation data are shown in table 1 below:
TABLE 1
The results of the above examples and comparative examples show that the light-resistant curtain prepared by the invention has good antifouling performance and good weather resistance under high temperature and high humidity conditions.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention should be defined by the appended claims.
Claims (11)
1. The light-resistant curtain is characterized by comprising a light reflecting layer, wherein the light reflecting layer is formed by curing the following light reflecting coatings, and the light reflecting coatings comprise the following substances in parts by weight:
40-60 parts of inorganic particles
0.5 to 1.0 portion of dispersant
0.1 to 0.5 portion of wetting agent
0.1 to 0.5 portion of defoaming agent
0.5 to 1.0 portion of flatting agent
20-40 parts of film forming material resin
1.0 to 3.0 portions of cross-linking agent
10-20 parts of deionized water;
wherein, the inorganic particles are a mixture of silicon dioxide and titanium dioxide, and the proportion of the silicon dioxide to the titanium dioxide is 1: (2-10).
2. A light curtain as claimed in claim 1, wherein the titanium dioxide has a particle size of 200-700 nm and the silicon dioxide has a particle size of 50-200 nm.
3. The light-resistant curtain as claimed in claim 1, wherein the dispersant is one or more of polyester dispersant, oligomeric soap dispersant and polymeric dispersant; the polyester dispersant is modified polyester; the oligomeric soap dispersing agent is one or more of sodium polycarboxylate, phosphate ester salt and polycaprolactopolyol-polyethyleneimine segmented copolymer in any weight ratio; the macromolecular dispersant is one or two of polystyrene and polyethylene glycol in any weight ratio.
4. The light-resistant curtain as claimed in claim 1, wherein the wetting agent is one or more selected from alkyl sulfate, sulfonate, polyoxyethylene alkylphenol ether and polyoxyethylene fatty alcohol ether.
5. The light-resistant curtain as claimed in claim 1, wherein the defoaming agent is one or more of higher alcohols, fatty acids and salts thereof, phosphates, hydrocarbon oils, polyethers, silicone polymers and amides.
6. The light-resistant curtain as claimed in claim 1, wherein the leveling agent is one or more of polydimethylsiloxane-modified siloxane, polyether-polyester-modified organosiloxane and alkyl-modified organosiloxane.
7. The light-resistant curtain of claim 1, wherein the film former resin is a water-based acrylic resin and the cross-linking agent is an aliphatic polyisocyanate.
8. The light-resistant curtain of claim 1, wherein the substrate layer is an optical prism array, the optical prism array is formed by closely arranging a plurality of prisms, and the cross section of each prism along the horizontal direction is triangular.
9. A light resistant curtain as claimed in claim 1, including a substrate layer, a light reflecting layer coated on the lower sides of the triangular prisms in the substrate layer, and a light absorbing layer coated on the upper sides of the triangular prisms in the substrate layer, the light absorbing layer being a light absorbing material.
10. A light resistant curtain as recited in claim 9, wherein the light absorbing layer is less thick than the reflective layer.
11. A method of making a light resistant curtain as claimed in any one of claims 1 to 10, comprising:
a preparation of a substrate layer
Patterning the base material through a stamping roller to form a prism array with a triangular cross section along the horizontal direction, so as to obtain a base material layer;
b preparation of the light-absorbing layer
Selecting black TPU material or coating carbon black, iron black and other light absorption materials to obtain a light absorption layer or a light absorption layer coating;
c preparing a light-reflecting layer
Sequentially and respectively adding deionized water, a dispersing agent, a wetting agent, inorganic particles, a defoaming agent, film forming material resin, a flatting agent and a crosslinking agent according to the proportion, mixing and stirring to prepare a reflective layer coating;
d obtaining light-resistant curtain
And respectively coating the light absorption layer and the light reflection layer on the upper side surface and the lower side surface of the triangular prism to obtain the light-resistant curtain.
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