CN218995834U - PDLC dimming film - Google Patents
PDLC dimming film Download PDFInfo
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- CN218995834U CN218995834U CN202223483902.4U CN202223483902U CN218995834U CN 218995834 U CN218995834 U CN 218995834U CN 202223483902 U CN202223483902 U CN 202223483902U CN 218995834 U CN218995834 U CN 218995834U
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- film
- liquid crystal
- pdlc
- dispersed liquid
- dimming film
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- 239000004983 Polymer Dispersed Liquid Crystal Substances 0.000 title claims abstract description 68
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000002105 nanoparticle Substances 0.000 claims abstract description 13
- ZNOKGRXACCSDPY-UHFFFAOYSA-N tungsten trioxide Chemical compound O=[W](=O)=O ZNOKGRXACCSDPY-UHFFFAOYSA-N 0.000 claims abstract description 12
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 10
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910002113 barium titanate Inorganic materials 0.000 claims abstract description 7
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052737 gold Inorganic materials 0.000 claims abstract description 7
- 239000010931 gold Substances 0.000 claims abstract description 7
- -1 polyethylene formamide Polymers 0.000 claims abstract description 6
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims abstract description 5
- 239000004926 polymethyl methacrylate Substances 0.000 claims abstract description 5
- 239000011787 zinc oxide Substances 0.000 claims abstract description 5
- 239000010410 layer Substances 0.000 claims description 49
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims description 8
- 239000011241 protective layer Substances 0.000 claims description 8
- 230000004044 response Effects 0.000 abstract description 8
- 230000035699 permeability Effects 0.000 abstract description 6
- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 238000000576 coating method Methods 0.000 abstract description 3
- 238000003786 synthesis reaction Methods 0.000 abstract description 3
- 239000003086 colorant Substances 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 239000004973 liquid crystal related substance Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 6
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 4
- 239000004831 Hot glue Substances 0.000 description 4
- 239000003063 flame retardant Substances 0.000 description 4
- 239000011521 glass Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- FOIXSVOLVBLSDH-UHFFFAOYSA-N Silver ion Chemical compound [Ag+] FOIXSVOLVBLSDH-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000002313 adhesive film Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000007766 curtain coating Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
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Abstract
The utility model relates to a PDLC dimming film, which belongs to the technical field of dimming films and comprises two layers of nano silver support films, wherein a polymer dispersed liquid crystal layer is arranged between the two layers of nano silver support films, an inorganic medium or an organic medium is added into the polymer dispersed liquid crystal layer, the inorganic medium is nano particles, the nano particles are tungsten trioxide, zinc oxide, barium titanate, nano gold or nano silver, and the organic medium is polymethyl methacrylate and polyethylene formamide. The utility model has the beneficial effects that the PDLC (polymer dispersed liquid crystal) layer of the existing PDLC dimming film is innovated and improved, so that the PDLC dimming film has more excellent electro-optical performance to meet the current increasingly diversified market demands, and on the basis of the existing coating process, the reaction condition and the synthesis environment of the polymer dispersed liquid crystal are changed by adjusting the polymer dispersed liquid crystal layer, so that the PDLC dimming film has the functions of quick response, high permeability and various colors.
Description
Technical Field
The utility model relates to the technical field of dimming films, in particular to a PDLC dimming film.
Background
The PDLC dimming film is a composite film with electric response switching, and consists of a layer of (10-30 mu m) micron-sized Liquid Crystal (LC) micro-droplets or nano-droplets in a solid polymer matrix and a peripheral interlayer film. The structure and operation principle of the dimming film in the current market are as follows: the PDLC layer is sandwiched between two transparent conductive ITO-PET (indium tin oxide) or nano silver-PE (nano silver) support films to form a smart dimming film. In the absence of an electric field, the PDLC film is highly scattering, the LC droplets are randomly distributed and randomly oriented with the optical axis, and light is scattered on the film while in an opaque state. After the electric field is removed, the LC micro-droplets return to the original random orientation state, and are in an opaque state at this time, so that one switching is completed.
The polymer dispersed liquid crystal has been developed for more than thirty years, and the preparation process thereof is very mature. After the polymer-dispersed liquid crystal dimming film is applied to the field of dimming films, the electro-optical performance of the PDLC dimming film cannot completely meet market demands due to inherent defects of the electro-optical performance of the single polymer-dispersed liquid crystal, and modification and adjustment of the PDLC dimming film to improve the electro-optical performance become important points of research. The existing part of intelligent dimming products are as follows:
the polymer network (acrylic ester and epoxy ester) is formed by adding chiral additive into the polymer dispersed liquid crystal layer in the Beijing Orient, so that the transmittance of the dimming product is uniform, and the phenomenon of non-uniformity of sandy Mura is avoided.
A novel light-adjusting film for relief printing is to prepare a macromolecule dispersed liquid crystal light-adjusting film- "LCM silver IC" by changing the synthesis conditions of polymer dispersed liquid crystal. The dimming film is transparent when the power supply is off, and is not transparent when the power supply is electrified.
The color diversity of the PDLC dimming film is possible by adding a dichroic dye in japan printing.
Jiangxi family is to improve the permeability of the dimming film by compounding a silica gel layer on a PDLC layer, so that the dimming film has frosted characteristics.
The above products are all improved to solve some of the problems of the polymer dispersed liquid crystal layer, but the organic high molecular polymer has poor long-term weather resistance under the condition of being electrified, the silica gel layer can not solve the problem of slow conversion speed, besides the defects of the above products, the polymer dispersed liquid crystal on the market has the property of being converted from an opaque state to a transparent state under the electrified state, but the electro-optical property of the polymer dispersed liquid crystal on the market enables the polymer dispersed liquid crystal layer to have the problems of slow state conversion, large outage haze, low light transmittance, high energy consumption and the like, so that the current market demands cannot be met, for example, the polymer dispersed liquid crystal layer cannot be widely applied to the scenes such as automobile glass and the like which need high permeability due to the fact that the polymer dispersed liquid crystal layer is large outage haze and the high energy consumption are provided.
Disclosure of Invention
The present utility model is directed to a PDLC dimming film, which solves the problems set forth in the above-mentioned background art.
The technical scheme of the utility model is as follows:
the nano silver support film comprises two layers of nano silver support films, a polymer dispersed liquid crystal layer is arranged between the two layers of nano silver support films, an inorganic medium or an organic medium is added into the polymer dispersed liquid crystal layer, and a protective layer is arranged on the outer surface of the two layers of nano silver support films.
Further, the inorganic medium is a nanoparticle.
Further, the nano particles are tungsten trioxide, zinc oxide, barium titanate, nano gold or nano silver.
Further, the organic medium is polymethyl methacrylate and polyethylene formamide.
Further, the outer surface of one of the protective layers is provided with a pressure-sensitive adhesive layer.
Further, a release film layer is arranged on the outer surface of the pressure-sensitive adhesive layer.
Further, a fireproof film layer is arranged on the outer surface of the release film layer.
The PDLC dimming film provided by the utility model has the following improvements and advantages compared with the prior art:
the method comprises the following steps: the utility model innovates and improves the PDLC (polymer dispersed liquid crystal) layer of the existing PDLC dimming film, so that the PDLC dimming film has more excellent electro-optical performance to meet the current increasingly diversified market demands, and on the basis of the existing coating process, the reaction condition and the synthesis environment of the polymer dispersed liquid crystal are changed by adjusting the polymer dispersed liquid crystal layer, so that the PDLC dimming film has the functions of quick response, high permeability and various colors.
Drawings
The utility model is further explained below with reference to the drawings and examples:
FIG. 1 is a schematic view of a layer structure of a light modulating film of the present utility model;
FIG. 2 is a schematic diagram of the structure of a scanning electron microscope of the present utility model;
FIG. 3 is a schematic diagram of the structure of a scanning electron microscope of the present utility model;
reference numerals illustrate: 10. a nano silver support film; 20. a polymer dispersed liquid crystal layer; 30. a protective layer; 40. a pressure-sensitive adhesive layer; 50. a release film layer; 60. and a fireproof film layer.
Detailed Description
The technical solutions of the embodiments of the present utility model will be clearly and completely described below in detail with reference to fig. 1 to 3, and it is obvious that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The PDLC dimming film provided by the utility model is improved, as shown in figures 1-3, and comprises two layers of nano silver support films 10, wherein a polymer dispersed liquid crystal layer 20 is arranged between the two layers of nano silver support films 10, a protective layer 30 is arranged on the outer surface of each of the two layers of nano silver support films 10, an inorganic medium or an organic medium is added into the polymer dispersed liquid crystal layer 20, the inorganic medium is nano particles, tungsten trioxide, zinc oxide, barium titanate, nano gold or nano silver, the organic medium is polymethyl methacrylate and polyethylene formamide, and the protective layer 30 is made of polyimide, so that the PDLC dimming film has good flexibility and strong stability;
the specific inorganic medium and the organic medium have the following adding effects:
(1) Zinc oxide nanoparticles of different sizes are added to form a zinc oxide-PDLC composite material, so that the size of LC liquid drops is increased to a micron level. The PDLC dimming film formed by the method has certain infrared absorption capacity, and the dimming film has good long-term use stability due to the change of the liquid drop size of the LC.
(2) As shown in fig. 2, the addition of barium titanate nanoparticles forms more uniform, dense LC droplets. The light-adjusting film produced by the method has low transmissivity when power is off, the transmissivity change is large in the conversion process, the response time is faster, the starting voltage is low, the sizes and the uniformity of LC liquid drop particles added by barium titanate with different sizes are different, and the PDLC shown in the figure f has optimal electro-optic performance.
(3) The addition effect of the silver nano particles and the nano gold nano particles is similar to that of barium titanate, so that the response time of a PDLC dimming film is faster, the starting voltage is low, as shown in a figure 3, the addition of the nano gold/silver enables LC to have smaller size, the response time is extremely fast, the starting voltage is extremely low, and the PDLC dimming film can be applied to products with high precision requirements, such as high-precision cameras and the like.
(4) The PDLC has higher permeability and quick response capability due to the addition of the tungsten trioxide nano particles, so that the PDLC can be applied to scenes such as car window films and the like which need high permeability.
(5) The addition of the organic medium polymethyl methacrylate and polyethylene formamide reduces the haze of the PDLC dimming film, and the product has low haze, quick response and low voltage starting through the combination of the PDLC dimming film, silver/nanometer gold nanoparticles and tungsten trioxide.
The PDLC dimming film adopts inorganic and organic mediums to simultaneously improve the polymer dispersed liquid crystal layer 20, the polymer dispersed liquid crystal layer 20 can be adjusted according to different requirements, and the nano particles have higher long-term stability relative to organic polymers.
One of the protective layers 30 is provided with a pressure-sensitive adhesive layer 40 on the outer surface, the pressure-sensitive adhesive layer 40 is provided with a release film layer 50 on the outer surface, and in the process of installing the dimming film, the PET release film layer 50 can be torn off, and the dimming film is adhered to the corresponding equipment installation place by using the pressure-sensitive adhesive layer 40.
The outer surface of the release film 50 is provided with a fireproof film 60, the fireproof film 60 is a flame-retardant hot-melt adhesive film, when the hot-melt adhesive film is produced, a flame retardant is matched in a raw material formula of the hot-melt adhesive film, the flame retardant and raw material particles are blended and granulated, and then the produced particles are put into an adhesive film production machine, and the flame-retardant hot-melt adhesive film is produced through coating or curtain coating, so that the glass film can be guaranteed to have certain fireproof performance in the storage process before film pasting, damage to the glass film caused by open fire is avoided, and the fireproof film 60 can be torn off along with the release film 50.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. A PDLC dimming film, characterized by: the nano silver support film comprises two layers of nano silver support films (10), a polymer dispersed liquid crystal layer (20) is arranged between the two layers of nano silver support films (10), an inorganic medium or an organic medium is added into the polymer dispersed liquid crystal layer (20), and a protective layer (30) is arranged on the outer surface of each layer of nano silver support films (10).
2. The PDLC dimming film of claim 1, wherein: the inorganic medium is a nanoparticle.
3. The PDLC dimming film of claim 2, wherein: the nano particles are tungsten trioxide, zinc oxide, barium titanate, nano gold or nano silver.
4. The PDLC dimming film of claim 1, wherein: the organic medium is polymethyl methacrylate and polyethylene formamide.
5. The PDLC dimming film of claim 1, wherein: one of the protective layers (30) is provided with a pressure sensitive adhesive layer (40) on its outer surface.
6. The PDLC dimming film of claim 5, wherein: the outer surface of the pressure-sensitive adhesive layer (40) is provided with a release film layer (50).
7. The PDLC dimming film of claim 6, wherein: and a fireproof film layer (60) is arranged on the outer surface of the release film layer (50).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223483902.4U CN218995834U (en) | 2022-12-27 | 2022-12-27 | PDLC dimming film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223483902.4U CN218995834U (en) | 2022-12-27 | 2022-12-27 | PDLC dimming film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218995834U true CN218995834U (en) | 2023-05-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223483902.4U Active CN218995834U (en) | 2022-12-27 | 2022-12-27 | PDLC dimming film |
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| Country | Link |
|---|---|
| CN (1) | CN218995834U (en) |
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- 2022-12-27 CN CN202223483902.4U patent/CN218995834U/en active Active
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| GR01 | Patent grant | ||
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Address after: 213000 Wujin Economic Development Zone, Jiangsu, Changzhou Patentee after: Jiangsu Aerospace Shanyou Technology Co.,Ltd. Address before: 213000 Wujin Economic Development Zone, Jiangsu, Changzhou Patentee before: CHANGZHOU SANYOU DISSAN PROTECTIVE MATERIAL MANUFACTURING Co.,Ltd. |