CN111045241B - Intelligent light adjusting film and application thereof in show window display cabinet - Google Patents
Intelligent light adjusting film and application thereof in show window display cabinet Download PDFInfo
- Publication number
- CN111045241B CN111045241B CN201911275795.6A CN201911275795A CN111045241B CN 111045241 B CN111045241 B CN 111045241B CN 201911275795 A CN201911275795 A CN 201911275795A CN 111045241 B CN111045241 B CN 111045241B
- Authority
- CN
- China
- Prior art keywords
- film
- transparent
- liquid crystal
- parts
- layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1334—Constructional arrangements; Manufacturing methods based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Dispersion Chemistry (AREA)
- Mathematical Physics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses an intelligent light adjusting film and application thereof in a show window display cabinet. The intelligent light adjusting film can be applied to a show window display cabinet, is transparent when electrified, and can display a show product in the show window; compared with the prior art, the intelligent light adjusting film prepared by the invention has the characteristics of low driving voltage, high electrified light transmittance, high industrial production efficiency, low cost and the like.
Description
Technical Field
The invention relates to the technical field of polymerized dispersed liquid crystal and preparation thereof, in particular to an intelligent light adjusting film and application thereof in a show window display cabinet.
Background
The light regulating Film (PDLC Film) is an electronic light control product, which means that polymer dispersed liquid crystal is solidified in the middle of 2 layers of transparent conductive films, under the condition of no electric field, the light regulating Film is in an opaque state, and when alternating current is introduced, the light regulating Film is in a transparent state. The glass partition is generally applied to glass partitions, such as hotel partitions, office partitions, bathroom partitions, banks, ticket office window partitions and the like, is attractive in appearance, can protect privacy, has multiple functions of water prevention, heat insulation, dimming and the like, and is also applied to door glass of villa window glass, automobile window glass, wine cabinet, bookcase, sales counter and the like to control light incidence and privacy; the device can also replace a projection curtain and has multiple functions of projection, light modulation and the like.
Polymer Dispersed Liquid Crystal (PDLC) is prepared by mixing low molecular liquid crystal with prepolymer, polymerizing under certain conditions (UV curing or thermosetting polymerization) to form micron-sized liquid crystal microdroplets uniformly dispersed in a polymer network, and then utilizing dielectric anisotropy of liquid crystal molecules to obtain a material with electro-optic response characteristic, wherein the material mainly works between a scattering state and a transparent state and has certain gray scale. Under the condition of no external voltage, a regular electric field can not be formed between the films, the optical axes of the liquid crystal particles are randomly oriented, a disordered state is presented, and the effective refractive index n of the liquid crystal particles is 0 Refractive index n not related to polymer p Matching, the incident light is strongly scattered and the film is opaque or translucent. When an external voltage is applied, the optical axes of the liquid crystal molecules are aligned perpendicular to the surface of the film, i.e., in line with the direction of the electric field. The ordinary refractive index of the particles substantially matches the refractive index of the polymer, and there are no distinct interfaces, forming a substantially homogeneous medium, so that no scattering of incident light occurs and the film is transparent. Thus, in the presence of an applied electric fieldUnder driving, the PDLC has optical switching characteristics.
At present, most of dimming films need large voltage when electrified, and have large energy consumption, and the personal safety of users is easily damaged if faults occur. Most of the conducting layers used by the light modulation films are ITO transparent films, ITO is expensive, raw material cost is too high, indium elements are scarce, the earth stock is limited, and the ITO market demand is larger and larger. Meanwhile, the ITO film is brittle and has poor flexibility. Moreover, the ITO conductive film needs higher voltage, so that the energy consumption is higher, and the personal safety of a user is easily damaged if a circuit fault occurs.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the additive-free nutritional preserved meat and the preparation process thereof.
An intelligent light adjusting film comprises two transparent PET film layers, two transparent conductive ITO film layers and a polymer dispersed liquid crystal layer; the polymer dispersed liquid crystal layer is arranged between the two transparent conductive ITO thin film layers, and the two transparent PET thin film layers are arranged on the outer sides of the two transparent conductive ITO thin film layers.
The thickness of each layer of the transparent PET film layer is 130-230 μm.
The thickness of each layer of the transparent conductive ITO thin film layer is 60-480nm.
The polymer dispersed liquid crystal layer comprises the following raw materials in parts by weight: 2-7 parts of accelerator, 1-10 parts of coupling agent, 2-9 parts of photoinitiator, 0.01-2.5 parts of nano particles, 20-60 parts of polymer intermediate and 40-70 parts of liquid crystal.
The polymer intermediate comprises one or more of butyl methacrylate, lauryl methacrylate, isooctyl acrylate, hexadecyl methacrylate and monomethylaminoethyl methacrylate.
The liquid crystal comprises liquid crystal SLC1717.
The accelerator comprises polyester acrylate and/or polyethylene.
The coupling agent comprises one or more of gamma-aminopropyltriethoxysilane, gamma-methacryloxypropyltrimethoxysilane and vinyl triethoxysilane.
The photoinitiator comprises one or more of 2-benzyl phenyl-2-dimethylamine-1- (4-morpholine benzyl phenyl) butanone, 4-isopropyl thioxanthone and 4-ethyl dimethylaminobenzoate.
Preferably, the photoinitiator is prepared from 2-phenylbenzyl-2-dimethylamine-1- (4-morpholine benzyl phenyl) butanone, 4-isopropyl thioxanthone and 4-ethyl dimethylaminobenzoate in a mass ratio of (1-3): (1-3): (1-3) mixing.
The nano particles comprise one or more of modified titanium dioxide, cadmium sulfide and ferroferric oxide.
Preferably, the nano particles are prepared from titanium dioxide, cadmium sulfide and ferroferric oxide according to the weight ratio of (2-6): (1-4): (1-4) in a mass ratio.
More preferably, the nano particles are prepared from modified titanium dioxide, cadmium sulfide and ferroferric oxide according to the weight ratio of (2-6): (1-4): (1-4) in a mass ratio.
The particle size of the nano particles is one or more of 10nm, 45nm and 60 nm.
The preparation method of the modified titanium dioxide comprises the following steps: according to the proportion of 1: (10-30), adding absolute ethyl alcohol into titanium dioxide, stirring at 50-80 ℃, uniformly stirring to obtain a mixed solution, and then adding sorbitan fatty acid ester and dodecyl trimethoxy silane, wherein the mass ratio of the sorbitan fatty acid ester to the dodecyl trimethoxy silane to the mixed solution is (0.005-0.2): (0.005-0.2): 10, continuously stirring and reacting for 1-4h at 50-80 ℃, performing ultrasonic treatment for 20-50min, centrifuging, removing supernatant to obtain precipitate, and drying to obtain the product.
The preparation method of the intelligent light adjusting film comprises the following steps:
i, uniformly sputtering a transparent ITO layer on one side of a transparent PET film according to a conventional sputtering process to obtain a PET/ITO transparent film;
II, under the condition of keeping out of the sun, placing the high molecular intermediate at 50-60 ℃ and stirring for 60-90min, then adding liquid crystal, stirring for 50-80min at 45-55 ℃, cooling to 20-30 ℃, continuing stirring for 20-40min, then adding the accelerator, the photoinitiator, the coupling agent and the nano particles, and stirring for 20-40min at 20-30 ℃ to obtain polymer dispersion liquid;
and III, coating the polymer dispersion liquid between two layers of PET/ITO transparent films through a precision coating extrusion process, and curing under ultraviolet irradiation to form a polymer dispersion liquid crystal layer, thereby finally obtaining the intelligent light adjusting film. This intelligence membrane of adjusting luminance promptly is laminated structure, from last to being transparent PET thin layer, transparent conductive ITO thin layer, polymer dispersed liquid crystal layer, transparent conductive ITO thin layer, transparent PET thin layer down in proper order.
Preferably, the precision coating extrusion is: coating the polymer-liquid crystal mixed solution by adopting a chromium alloy coating roller in a 10-100 ten thousand-level dust-free environment, and then integrating three layers of two PET/ITO transparent films and a polymer dispersed liquid crystal layer under the rolling operation with the thickness of 250-600 mu m.
Preferably, the ultraviolet light is cured into: the ultraviolet light intensity is 40-100mw/cm 2 Curing for 5-30min at 20-40 deg.c, and controlling the thickness of the dispersed liquid crystal layer in 15-30nm.
The show window display cabinet adopts the intelligent dimming film; when a projector of the show window display cabinet is started, the intelligent dimming film is not electrified and becomes semitransparent, images are projected on the intelligent dimming film, and pedestrians can view the images on the show window; when the projector is closed, the intelligent dimming film is electrified to be transparent, and the pedestrians can view the display products in the show window display cabinet.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following beneficial effects: the intelligent light adjusting film can be applied to a show window display cabinet, is transparent when electrified, and can display a show product in the show window; when the display window is not powered on and the projection is started, the projection image can be displayed on the intelligent light adjusting film.
Detailed Description
The above summary of the present invention is described in further detail below with reference to specific embodiments, but it should not be understood that the scope of the above subject matter of the present invention is limited to the following examples.
Introduction of raw materials and equipment in the examples:
clear PET film, 200 μm thick, available from Wenzhou Long Xiang packaging, inc.
A transparent conductive ITO film having a thickness of 300nm and available from Beijing seven-star Huachuang.
Butyl methacrylate, available from Shanghai Michelin Biotech, inc.
Liquid crystal SLC1717, available from shijiazhuang, perpetual Hua Qing liquid crystal limited.
Polyester acrylate, having a viscosity of 100mPa.s, from Pasteff, germany, under the designation BASF Laromer LR 9004.
Gamma-aminopropyltriethoxysilane, product number: a10668, available from Alfa-Angsa (China) chemical Co.
2-phenylbenzyl-2-dimethylamine-1- (4-morpholinobenzylphenyl) butanone, commercially available from Changshan biosciences, inc.
4-Isopropylthioxanthone, available from Cheng Weihua, inc., hubei Chu.
Ethyl 4-dimethylaminobenzoate available from north Hu Xin Ming chemical Co.
Titanium dioxide, particle size 20nm, anatase type, available from Nanjing Tianxing New materials Co.
Cadmium sulfide, particle size 5nm, was purchased from Beijing Deke island gold technologies, inc.
Ferroferric oxide with a particle size of 50nm was purchased from Shanghai Xiao Zhu nanometer science and technology Limited.
The ultrasonic equipment is a JP-040S type ultrasonic cleaning machine which is purchased from Jie union cleaning equipment Co., ltd, shenzhen city.
The centrifugal equipment is a TGL-16L type high-speed centrifuge which is purchased from Beijing Tianlian Harmonious instruments and meters Limited.
Example 1
An intelligent light adjusting film comprises two transparent PET film layers, two transparent conductive ITO film layers and a polymer dispersed liquid crystal layer; the polymer dispersed liquid crystal layer is arranged between the two transparent conductive ITO thin film layers, and the two transparent PET thin film layers are arranged on the outer sides of the two transparent conductive ITO thin film layers.
The polymer dispersed liquid crystal layer is prepared from the following raw materials in parts by weight: 5 parts of polyester acrylate, 5 parts of gamma-aminopropyltriethoxysilane, 2 parts of 2-benzyl-2-dimethylamine-1- (4-morpholine benzyl phenyl) butanone, 2 parts of 4-isopropyl thioxanthone, 2 parts of 4-dimethylamino ethyl benzoate, 1.5 parts of nano particles, 40 parts of butyl methacrylate and 55 parts of liquid crystal SLC1717.
The nano particles are prepared from titanium dioxide, cadmium sulfide and ferroferric oxide according to the weight ratio of 2:1:1, and mixing the components in a mass ratio of 1.
The preparation method of the intelligent light adjusting film comprises the following steps:
uniformly sputtering a transparent ITO layer on one side of a transparent PET film according to a conventional sputtering process to obtain a PET/ITO transparent film;
placing butyl methacrylate at 55 ℃ under the condition of keeping out of the sun, stirring for 70min under the condition of 5000r/min, then adding liquid crystal SLC1717, stirring for 60min under the condition of 50 ℃ and 5000r/min, keeping the rotating speed unchanged, cooling to 25 ℃, continuing stirring for 30min, then adding polyester acrylate, 2-benzyl-2-dimethylamine-1- (4-morpholine benzyl phenyl) butanone, 4-isopropyl thioxanthone, 4-dimethyl aminobenzoic ethyl ester, gamma-aminopropyltriethoxysilane and nano particles, and continuing stirring for 30min under the condition of 25 ℃ and 5000r/min to obtain polymer dispersion liquid;
coating the polymer dispersion liquid by adopting a chromium alloy coating roller in a 100 ten thousand-level dust-free environment, and then leading two layers of PET/ITO transparent films and the polymer dispersed liquid crystal layer to form three-layer integration under the rolling work with the thickness of 300 mu m, wherein the strength is 70mw/cm 2 The curing is carried out under the irradiation of ultraviolet light, the curing time is 5min, the curing temperature is 35 ℃, the thickness of the polymer dispersed liquid crystal layer is controlled to be 30nm, the polymer dispersed liquid crystal layer is formed, and the intelligent light adjusting film is obtained, namely, the intelligent light adjusting film is of a laminated structure and sequentially comprises a transparent PET film layer, a transparent conductive ITO film layer, a polymer dispersed liquid crystal layer, a transparent conductive ITO film layer and a transparent PET film layer from top to bottom.
Example 2
An intelligent light adjusting film comprises two transparent PET film layers, two transparent conductive ITO film layers and a polymer dispersed liquid crystal layer; the polymer dispersed liquid crystal layer is arranged between the two transparent conductive ITO thin film layers, and the two transparent PET thin film layers are arranged on the outer sides of the two transparent conductive ITO thin film layers.
The polymer dispersed liquid crystal layer is prepared from the following raw materials in parts by weight: 5 parts of polyester acrylate, 5 parts of gamma-aminopropyltriethoxysilane, 3 parts of 2-benzyl-2-dimethylamine-1- (4-morpholine benzyl phenyl) butanone, 3 parts of 4-isopropyl thioxanthone, 1.5 parts of nanoparticles, 40 parts of butyl methacrylate and 55 parts of liquid crystal SLC1717.
The nano particles are prepared from titanium dioxide, cadmium sulfide and ferroferric oxide according to the proportion of 2:1:1, and mixing the components in a mass ratio of 1.
The preparation method of the intelligent light adjusting film comprises the following steps:
uniformly sputtering a transparent ITO layer on one side of a transparent PET film according to a conventional sputtering process to obtain a PET/ITO transparent film;
placing butyl methacrylate at 55 ℃ under the condition of keeping out of the sun, stirring for 70min under the condition of 5000r/min, then adding liquid crystal SLC1717, stirring for 60min under the condition of 50 ℃ and 5000r/min, keeping the rotating speed unchanged, cooling to 25 ℃, continuing stirring for 30min, then adding polyester acrylate, 2-benzyl-2-dimethylamine-1- (4-morpholine benzyl phenyl) butanone, 4-isopropyl thioxanthone, gamma-aminopropyltriethoxysilane and nano particles, and continuing stirring for 30min under the condition of 25 ℃ and 5000r/min to obtain polymer dispersion liquid;
coating the polymer dispersion liquid by adopting a chromium alloy coating roller in a 100 ten thousand-level dust-free environment, and then leading two layers of PET/ITO transparent films and the polymer dispersed liquid crystal layer to form three-layer integration under the rolling work with the thickness of 300 mu m, wherein the strength is 70mw/cm 2 Curing under the irradiation of ultraviolet light, wherein the curing time is 5min, the curing temperature is 35 ℃, the thickness of the polymer dispersed liquid crystal layer is controlled to be 30nm, the polymer dispersed liquid crystal layer is formed, and the intelligent light modulation film is obtained, namely, the intelligent light modulation film is of a laminated structure and is sequentially arranged from top to bottomThe transparent conductive ITO film layer is a transparent PET film layer, a transparent conductive ITO film layer, a polymer dispersed liquid crystal layer, a transparent conductive ITO film layer and a transparent PET film layer.
Example 3
An intelligent light adjusting film comprises two transparent PET film layers, two transparent conductive ITO film layers and a polymer dispersed liquid crystal layer; the polymer dispersed liquid crystal layer is arranged between the two transparent conductive ITO thin film layers, and the two transparent PET thin film layers are arranged on the outer sides of the two transparent conductive ITO thin film layers.
The polymer dispersed liquid crystal layer is prepared from the following raw materials in parts by weight: 5 parts of polyester acrylate, 5 parts of gamma-aminopropyltriethoxysilane, 3 parts of 4-isopropyl thioxanthone, 3 parts of 4-dimethylamino ethyl benzoate, 1.5 parts of nano particles, 40 parts of butyl methacrylate and 55 parts of liquid crystal SLC1717.
The nano particles are prepared from titanium dioxide, cadmium sulfide and ferroferric oxide according to the proportion of 2:1:1, and mixing the components in a mass ratio of 1.
The preparation method of the intelligent light adjusting film comprises the following steps:
uniformly sputtering a transparent ITO layer on one side of a transparent PET film according to a conventional sputtering process to obtain a PET/ITO transparent film;
placing butyl methacrylate at 55 ℃ under the condition of keeping out of the sun, stirring for 70min under the condition of 5000r/min, then adding liquid crystal SLC1717, stirring for 60min under the condition of 50 ℃ and 5000r/min, keeping the rotating speed unchanged, cooling to 25 ℃, continuing stirring for 30min, then adding polyester acrylate, 4-isopropyl thioxanthone, 4-dimethylamino ethyl benzoate, gamma-aminopropyltriethoxysilane and nano particles, and continuing stirring for 30min under the condition of 25 ℃ and 5000r/min to obtain a polymer dispersion liquid;
coating the polymer dispersion liquid by adopting a chromium alloy coating roller in a 100 ten thousand-level dust-free environment, and then leading two layers of PET/ITO transparent films and the polymer dispersed liquid crystal layer to form three-layer integration under the rolling work with the thickness of 300 mu m, wherein the strength is 70mw/cm 2 Curing under the irradiation of ultraviolet light, wherein the curing time is 5min, the curing temperature is 35 ℃, and the thickness of the polymer dispersed liquid crystal layer is controlled to be 30nm to form polymer dispersed liquidAnd (3) obtaining an intelligent light modulation film through the crystal layer, namely the intelligent light modulation film is of a laminated structure and sequentially comprises a transparent PET film layer, a transparent conductive ITO film layer, a polymer dispersed liquid crystal layer, a transparent conductive ITO film layer and a transparent PET film layer from top to bottom.
Example 4
An intelligent light adjusting film comprises two transparent PET film layers, two transparent conductive ITO film layers and a polymer dispersed liquid crystal layer; the polymer dispersed liquid crystal layer is arranged between the two transparent conductive ITO thin film layers, and the two transparent PET thin film layers are arranged on the outer sides of the two transparent conductive ITO thin film layers.
The polymer dispersed liquid crystal layer is prepared from the following raw materials in parts by weight: 5 parts of polyester acrylate, 5 parts of gamma-aminopropyltriethoxysilane, 3 parts of 2-benzyl-2-dimethylamine-1- (4-morpholine benzyl phenyl) butanone, 3 parts of ethyl 4-dimethylaminobenzoate, 1.5 parts of nanoparticles, 40 parts of butyl methacrylate and 55 parts of liquid crystal SLC1717.
The nano particles are prepared from titanium dioxide, cadmium sulfide and ferroferric oxide according to the weight ratio of 2:1:1, and mixing the components in a mass ratio of 1.
The preparation method of the intelligent light adjusting film comprises the following steps:
uniformly sputtering a transparent ITO layer on one side of a transparent PET film according to a conventional sputtering process to obtain a PET/ITO transparent film;
II, under the condition of keeping out of the sun, placing butyl methacrylate at 55 ℃ and 5000r/min, stirring for 70min, then adding liquid crystal SLC1717, stirring for 60min at 50 ℃ and 5000r/min, keeping the rotating speed unchanged, cooling to 25 ℃, continuing stirring for 30min, then adding polyester acrylate, 2-benzyl-2-dimethylamine-1- (4-morpholine benzyl phenyl) butanone, 4-ethyl dimethylaminobenzoate, gamma-aminopropyltriethoxysilane and nano particles, and continuing stirring for 30min at 25 ℃ and 5000r/min to obtain a polymer dispersion liquid;
coating the polymer dispersion liquid by adopting a chromium alloy coating roller in a 100 ten thousand-level dust-free environment, and then leading two layers of PET/ITO transparent films and the polymer dispersed liquid crystal layer to form three-layer integration under the rolling work with the thickness of 300 mu m, wherein the strength is 70mw/cm 2 The ultraviolet light is irradiated and cured, the curing time is 5min, the curing temperature is 35 ℃, the thickness of the polymer dispersed liquid crystal layer is controlled to be 30nm, the polymer dispersed liquid crystal layer is formed, and the intelligent light adjusting film is obtained, namely, the intelligent light adjusting film is of a laminated structure and sequentially comprises a transparent PET film layer, a transparent conductive ITO film layer, a polymer dispersed liquid crystal layer, a transparent conductive ITO film layer and a transparent PET film layer from top to bottom.
Example 5
An intelligent light adjusting film comprises two transparent PET film layers, two transparent conductive ITO film layers and a polymer dispersed liquid crystal layer; the polymer dispersed liquid crystal layer is arranged between the two transparent conductive ITO thin film layers, and the two transparent PET thin film layers are arranged on the outer sides of the two transparent conductive ITO thin film layers.
The polymer dispersed liquid crystal layer is prepared from the following raw materials in parts by weight: 5 parts of polyester acrylate, 5 parts of gamma-aminopropyltriethoxysilane, 2 parts of 2-benzyl-2-dimethylamine-1- (4-morpholine benzyl phenyl) butanone, 2 parts of 4-isopropyl thioxanthone, 2 parts of 4-dimethylamino ethyl benzoate, 1.5 parts of nano particles, 40 parts of butyl methacrylate and 55 parts of liquid crystal SLC1717.
The nano particles are prepared from modified titanium dioxide, cadmium sulfide and ferroferric oxide according to the weight ratio of 2:1:1, and mixing the components in a mass ratio of 1.
The preparation method of the intelligent light adjusting film comprises the following steps:
uniformly sputtering a transparent ITO layer on one side of a transparent PET film according to a conventional sputtering process to obtain a PET/ITO transparent film;
placing butyl methacrylate at 55 ℃ under the condition of keeping out of the sun, stirring for 70min under the condition of 5000r/min, then adding liquid crystal SLC1717, stirring for 60min under the condition of 50 ℃ and 5000r/min, keeping the rotating speed unchanged, cooling to 25 ℃, continuing stirring for 30min, then adding polyester acrylate, 2-benzyl-2-dimethylamine-1- (4-morpholine benzyl phenyl) butanone, 4-isopropyl thioxanthone, 4-dimethyl aminobenzoic ethyl ester, gamma-aminopropyltriethoxysilane and nano particles, and continuing stirring for 30min under the condition of 25 ℃ and 5000r/min to obtain polymer dispersion liquid;
III, in 100 ten thousand gradeCoating the polymer dispersion liquid by adopting a chromium alloy coating roller in a dust-free environment, and then combining two layers of PET/ITO transparent films and a polymer dispersed liquid crystal layer into a whole by rolling with the thickness of 300 mu m, wherein the strength is 70mw/cm 2 The ultraviolet light is irradiated and cured, the curing time is 5min, the curing temperature is 35 ℃, the thickness of the polymer dispersed liquid crystal layer is controlled to be 30nm, the polymer dispersed liquid crystal layer is formed, and the intelligent light adjusting film is obtained, namely, the intelligent light adjusting film is of a laminated structure and sequentially comprises a transparent PET film layer, a transparent conductive ITO film layer, a polymer dispersed liquid crystal layer, a transparent conductive ITO film layer and a transparent PET film layer from top to bottom.
The preparation method of the modified titanium dioxide comprises the following steps: according to the following steps: 20, adding absolute ethyl alcohol into titanium dioxide, stirring and reacting for 2 hours at 70 ℃ and 100r/min to obtain a mixed solution, and then adding sorbitan fatty acid ester and dodecyl trimethoxy silane, wherein the mass ratio of the sorbitan fatty acid ester to the dodecyl trimethoxy silane to the mixed solution is 0.01:0.01:10, continuously stirring and reacting for 3 hours at 70 ℃ and 100r/min, then performing ultrasonic treatment for 20 minutes at 25 ℃, wherein the ultrasonic power of the ultrasonic treatment is 240W, the ultrasonic frequency is 30kHz, centrifuging for 10 minutes at 20 ℃ and 12000r/min, removing supernate to obtain precipitate, and drying the precipitate for 8 hours at 60 ℃ to obtain the nano-composite material.
Comparative example 1
An intelligent light adjusting film comprises two transparent PET film layers, two transparent conductive ITO film layers and a polymer dispersed liquid crystal layer; the polymer dispersed liquid crystal layer is arranged between the two transparent conductive ITO thin film layers, and the two transparent PET thin film layers are arranged on the outer sides of the two transparent conductive ITO thin film layers.
The polymer dispersed liquid crystal layer is prepared from the following raw materials in parts by weight: 5 parts of polyester acrylate, 5 parts of gamma-aminopropyltriethoxysilane, 1.5 parts of nano particles, 40 parts of butyl methacrylate and 55 parts of liquid crystal SLC1717.
The nano particles are prepared from titanium dioxide, cadmium sulfide and ferroferric oxide according to the proportion of 2:1:1, and mixing the components in a mass ratio of 1.
The preparation method of the intelligent light adjusting film comprises the following steps:
i, uniformly sputtering a transparent ITO layer on one side of a transparent PET film according to a conventional sputtering process to obtain a PET/ITO transparent film;
II, under the condition of keeping out of the sun, placing butyl methacrylate at 55 ℃ and 5000r/min, stirring for 70min, then adding liquid crystal SLC1717, stirring for 60min at 50 ℃ and 5000r/min, keeping the rotating speed unchanged, cooling to 25 ℃, continuing stirring for 30min, then adding polyester acrylate, gamma-aminopropyltriethoxysilane and nano particles, and continuing stirring for 30min at 25 ℃ and 5000r/min to obtain a polymer dispersion liquid;
coating the polymer dispersion liquid by adopting a chromium alloy coating roller in a 100 ten thousand-level dust-free environment, and then leading two layers of PET/ITO transparent films and the polymer dispersed liquid crystal layer to form three-layer integration under the rolling work with the thickness of 300 mu m, wherein the strength is 70mw/cm 2 The ultraviolet light is irradiated and cured, the curing time is 5min, the curing temperature is 35 ℃, the thickness of the polymer dispersed liquid crystal layer is controlled to be 30nm, the polymer dispersed liquid crystal layer is formed, and the intelligent light adjusting film is obtained, namely, the intelligent light adjusting film is of a laminated structure and sequentially comprises a transparent PET film layer, a transparent conductive ITO film layer, a polymer dispersed liquid crystal layer, a transparent conductive ITO film layer and a transparent PET film layer from top to bottom.
Test example 1
Testing of electrified light transmittance: the intelligent light modulation film is cut into pieces with the size of 50mm multiplied by 50mm, the pieces are connected with an ITO layer of the intelligent light modulation film through a conducting wire, and 20V voltage is applied; a light transmittance measuring instrument (model LS110A, purchased from Shanzhi precision instruments science and technology (Shenzhen) Limited) is used for testing the light transmittance of the intelligent light adjusting film in the electrified state, and the test results are shown in Table 1.
Table 1: electrified light transmittance test result table of intelligent light adjusting film
| Group of | Electric transmittance% |
| Example 1 | 92 |
| Example 2 | 86 |
| Example 3 | 82 |
| Example 4 | 84 |
| Example 5 | 96 |
| Comparative example 1 | 73 |
As can be seen from the test results, the photo-initiator in example 1, which was composed of a mixture of 2-phenylbenzyl-2-dimethylamine-1- (4-morpholinyl benzyl) butanone, 4-isopropylthioxanthone, and ethyl 4-dimethylaminobenzoate, had higher electrical transmittance than those of examples 2 to 4 (the photo-initiator was composed of any two of 2-phenylbenzyl-2-dimethylamine-1- (4-morpholinyl benzyl) butanone, 4-isopropylthioxanthone, and ethyl 4-dimethylaminobenzoate) and comparative example 1, which did not employ a photo-initiator.
Test example 2
Testing of ultraviolet blocking rate: the intelligent light modulation film is cut into pieces of 50mm multiplied by 50mm, the ultraviolet blocking rate of the intelligent light modulation film is measured by a light transmittance measuring instrument (model LS110A, purchased from Shanzhi precision instruments science and technology (Shenzhen) Co., ltd.) when the intelligent light modulation film is not electrified, the ultraviolet blocking rate =100% -ultraviolet light transmittance, and the test result is shown in Table 2.
Table 2: ultraviolet blocking rate test result table of intelligent light adjusting film when not electrified
| Group of | Ultraviolet blocking ratio when not energized% |
| Example 1 | 75.9 |
| Example 2 | 67.2 |
| Example 3 | 69.0 |
| Example 4 | 66.4 |
| Example 5 | 87.3 |
| Comparative example 1 | 56.5 |
From the test results, example 5 modified titanium dioxide, and the ultraviolet blocking rate was higher than that of example 1.
The foregoing is considered as illustrative and not restrictive in character, and that all equivalent and simple variations on the principles taught herein are included within the scope of the present invention; various modifications, additions and substitutions for the specific embodiments described may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.
Claims (7)
1. An intelligent light adjusting film is characterized by comprising two transparent PET film layers, two transparent conductive ITO film layers and a polymer dispersed liquid crystal layer; the polymer dispersed liquid crystal layer is arranged between the two transparent conductive ITO thin film layers, and the two transparent PET thin film layers are arranged on the outer sides of the two transparent conductive ITO thin film layers;
the polymer dispersed liquid crystal layer comprises the following raw materials in parts by weight: 2-7 parts of accelerator, 1-10 parts of coupling agent, 2-9 parts of photoinitiator, 0.01-2.5 parts of nano particles, 20-60 parts of polymer intermediate and 40-70 parts of liquid crystal;
the photoinitiator is prepared from 2-benzyl phenyl-2-dimethylamine-1- (4-morpholine benzyl phenyl) butanone, 4-isopropyl thioxanthone and 4-ethyl dimethylaminobenzoate in a mass ratio of (1-3): (1-3): (1-3) mixing;
the nano particles are prepared from modified titanium dioxide, cadmium sulfide and ferroferric oxide according to the weight ratio of (2-6): (1-4): (1-4) by mass;
the preparation method of the modified titanium dioxide comprises the following steps: according to the following steps: (10-30), adding absolute ethyl alcohol into titanium dioxide, stirring at 50-80 ℃, uniformly stirring to obtain a mixed solution, and then adding sorbitan fatty acid ester and dodecyl trimethoxy silane, wherein the mass ratio of the sorbitan fatty acid ester to the dodecyl trimethoxy silane to the mixed solution is (0.005-0.2): (0.005-0.2): 10, continuously stirring and reacting for 1-4h at 50-80 ℃, performing ultrasonic treatment for 20-50min, centrifuging, removing supernatant to obtain precipitate, and drying to obtain the product.
2. The smart dimming film of claim 1, wherein the polymeric intermediate comprises one or more of butyl methacrylate, lauryl methacrylate, isooctyl acrylate, cetyl methacrylate, monomethylaminoethyl methacrylate.
3. The smart dimming film of claim 1, wherein the accelerator comprises polyester acrylate and/or polyethylene.
4. The intelligent light adjusting film as claimed in claim 1, wherein the coupling agent comprises one or more of gamma-aminopropyltriethoxysilane, gamma-methacryloxypropyltrimethoxysilane, and vinyltriethoxysilane.
5. The intelligent light-adjusting film according to claim 1, wherein the method for producing the intelligent light-adjusting film comprises the steps of:
i, uniformly sputtering a transparent ITO layer on one side of a transparent PET film according to a conventional sputtering process to obtain a PET/ITO transparent film;
II, stirring the polymer intermediate at 50-60 ℃ for 60-90min under the condition of keeping out of the sun, then adding liquid crystal, stirring at 45-55 ℃ for 50-80min, cooling to 20-30 ℃, continuing stirring for 20-40min, then adding an accelerator, a photoinitiator, a coupling agent and nanoparticles, and stirring at 20-30 ℃ for 20-40min to obtain a polymer dispersion liquid;
and III, coating the polymer dispersion liquid between two layers of PET/ITO transparent films through a precision coating extrusion process, and curing under ultraviolet irradiation to form a polymer dispersion liquid crystal layer, thereby finally obtaining the intelligent light adjusting film.
6. The smart light adjusting film according to claim 1, wherein the thickness of each layer of the transparent PET film layer is 130 to 230 μm; the thickness of each layer of the transparent conductive ITO thin film layer is 60-480nm.
7. A window showcase characterized by comprising the intelligent light-adjusting film of any one of claims 1 to 6; when a projector of the show window display cabinet is started, the intelligent dimming film is not electrified and becomes semitransparent, images are projected on the intelligent dimming film, and pedestrians can view the images on the show window; when the projector is closed, the intelligent dimming film is electrified to be transparent, and the pedestrians can view the display products in the show window display cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911275795.6A CN111045241B (en) | 2019-12-12 | 2019-12-12 | Intelligent light adjusting film and application thereof in show window display cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911275795.6A CN111045241B (en) | 2019-12-12 | 2019-12-12 | Intelligent light adjusting film and application thereof in show window display cabinet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111045241A CN111045241A (en) | 2020-04-21 |
| CN111045241B true CN111045241B (en) | 2022-10-28 |
Family
ID=70236742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911275795.6A Active CN111045241B (en) | 2019-12-12 | 2019-12-12 | Intelligent light adjusting film and application thereof in show window display cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111045241B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06340218A (en) * | 1993-06-01 | 1994-12-13 | Japan Aviation Electron Ind Ltd | Sunvisor for vehicle |
| CN105068289A (en) * | 2015-06-30 | 2015-11-18 | 广州市华惠材料科技有限公司 | Smart light modulation film and preparation method thereof |
| CN105238112A (en) * | 2015-10-28 | 2016-01-13 | 浙江鼎昇新材料科技有限公司 | Method for preparing nano-doped intelligent light-adjusting film |
| CN107121823A (en) * | 2017-03-09 | 2017-09-01 | 张家港康得新光电材料有限公司 | Pdlc film component, its preparation method and display device |
| CN107608117A (en) * | 2017-09-30 | 2018-01-19 | 上海金泛斯标识有限公司 | A kind of intelligent light modulation film for Window Display cabinet |
| CN109324433A (en) * | 2017-08-01 | 2019-02-12 | 北京大学 | A kind of polymer dispersed liquid-crystal film and preparation method thereof of dopen Nano particle |
-
2019
- 2019-12-12 CN CN201911275795.6A patent/CN111045241B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06340218A (en) * | 1993-06-01 | 1994-12-13 | Japan Aviation Electron Ind Ltd | Sunvisor for vehicle |
| CN105068289A (en) * | 2015-06-30 | 2015-11-18 | 广州市华惠材料科技有限公司 | Smart light modulation film and preparation method thereof |
| CN105238112A (en) * | 2015-10-28 | 2016-01-13 | 浙江鼎昇新材料科技有限公司 | Method for preparing nano-doped intelligent light-adjusting film |
| CN107121823A (en) * | 2017-03-09 | 2017-09-01 | 张家港康得新光电材料有限公司 | Pdlc film component, its preparation method and display device |
| CN109324433A (en) * | 2017-08-01 | 2019-02-12 | 北京大学 | A kind of polymer dispersed liquid-crystal film and preparation method thereof of dopen Nano particle |
| CN107608117A (en) * | 2017-09-30 | 2018-01-19 | 上海金泛斯标识有限公司 | A kind of intelligent light modulation film for Window Display cabinet |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111045241A (en) | 2020-04-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107608117B (en) | Intelligent light adjusting film for show window display cabinet | |
| CN110596961B (en) | Electric control light adjusting film and preparation method thereof | |
| JP6164271B2 (en) | Light control film | |
| JP6724352B2 (en) | Liquid crystal element, liquid crystal composition, screen and display using liquid crystal element | |
| CN105093620B (en) | Public advertising display screen and preparation method thereof | |
| JP2016534176A (en) | Liquid crystal polymer composition, method for producing the same and liquid crystal article comprising the same | |
| CN106324883A (en) | Method for preparing cholesteric liquid crystal functional film through ultraviolet light-heating two-step polymerization | |
| CN107817618B (en) | Intelligent light adjusting film | |
| US20190258097A1 (en) | Method for preparing intelligent display film having switchable viewing angle and composite film containing display film | |
| CN105906762A (en) | Low-voltage-driven mercaptan-containing polymer dispersed liquid crystal thin film material and preparation method of same | |
| CN106632883B (en) | Preparation method of intelligent display film with switchable visual angle | |
| CN108628080A (en) | A kind of line holographic projections film and its preparation method and application | |
| JPH06504387A (en) | Polymer dispersed liquid crystal device with ultraviolet polymerizable matrix and variable light transmittance and method for preparing the same | |
| CN111045241B (en) | Intelligent light adjusting film and application thereof in show window display cabinet | |
| CN102096225A (en) | Production process of a dimming film for intelligent dimming glass | |
| US20160187681A1 (en) | Encapsulated polymer stabilized cholesteric texture light shutter | |
| Zhang et al. | Studies on electro‐optical properties of polymer matrix/LC/ITO nanoparticles composites | |
| CN102532773B (en) | Polymer dispersed liquid crystal film and production process thereof | |
| WO2020037769A1 (en) | Pdlc adjustable-transmittance material, adjustable-transmittance film, and manufacturing method for same | |
| WO2011093330A1 (en) | Method of producing (meth)acryloyl group-containing polysiloxane resin, and light-controlling film using (meth)acryloyl group-containing polysiloxane resin obtained by said method | |
| WO2007136063A1 (en) | Electronic blind and method for manufacturing electronic blind | |
| CN111522151A (en) | Highly sensitive mechanical control intelligent window film and preparation method thereof | |
| WO2004005426A1 (en) | Light control device and its manufacturing method | |
| JP2002214653A (en) | Light controllable material, light controllable film and method of manufacturing light controllable film | |
| JP2002082364A (en) | Light regulation material, light regulation film and method for manufacturing the light regulation film |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20220927 Address after: Room W-525, No. 559, Yueluo Road, Baoshan District, Shanghai, 201900 Applicant after: Shanghai Dingpeng Architectural Interior Design Co.,Ltd. Address before: 437400 group 14, Lihe village, junshui Town, Tongcheng County, Xianning City, Hubei Province Applicant before: Du Kangwei |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |