JPS5979226A - Dimming body - Google Patents

Abstract

PURPOSE:To enhance strength and to prevent deterioration of responsiveness by using porous plastics contg. a redox agent and a solvent by >=20wt% based on the plastics for the electrolyte of a dimming body using EC. CONSTITUTION:The dimming body is prepared by forming an electrode of In2O3. SnO2, Au, or the like is formed on a transparent plate of glass or the like, and providing thereon an electrolyte between the first transparent plate of an EC substance layer of WO3.MoO3 or the like and the dimming body in which transparent counter electrodes are opposed. As this electrolyte, porous plastics contg. the electrolyte of a redox agent, a solvent, etc. by >=20wt%, preferably, >=50wt% basing on the weight of said plastics is used. As said plastics, PE, PVC, PMMA, polystyrene, PVA, polyacetal, polycarbonate, nylon, acetate, silicone, polyuretane, etc. are used.

Description

[Detailed description of the invention]

The present invention relates to a light control body using electrochromic (hereinafter referred to as KO). A light control body that utilizes the PC phenomenon is, for example, the Sunscreen i? 1, the incident length of external light can be arbitrarily controlled automatically or artificially, and it is expected to be used as a light material for building materials, automobiles, aircraft windows, etc. Conventionally, EC elements have a GC material such as Vl'03°Mo5s, TiC1+, or 203 between a pair of IS electrode plates.
Toko no 1! Color the IC material? A box containing vine ions, holding solutes in between. Many devices are known, and their applications to small display devices are being studied. Conventionally proposed differential electrolytes with improved ionic conductivity include polyvinyl alcohol, polyacrylamide, gotylene glycol, polystyrene, and propylene carbonate containing acid or base. be. EC elements for P display devices are usually small and there is little risk of damage, so liquid 17) Ir materials have a faster response time and are better suited for use in windows, partitions, etc. such as light control devices. In the case of using a large σ/C11, damage is likely to occur due to collisions with human bodies, holes, stones, etc., or pressure from wind, rain, etc., and prevention of this is required. For this reason, it has been proposed that the light control body be made of a conductive plastic film that is adhesively chipped and attached using a gel-like acid solution such as polyvinyl butyseal. However, there is a problem with Q41 when the gel-like wire is broken, that if the transparent plate on the left side of the board is damaged, it will take 1.5 minutes, and there is little impact on improving the strength of the transparent plate. However, when using a plastic film, the strength t' was improved by adhering it to two transparent plates, but the response was poor.The present invention was made to improve these drawbacks. The electrode and the EC material are laminated/C,”;,+%]
In the +1M light body, the transparent plate and the second Liao 131 plate, which formed the opposing force and the pole, are held facing each other. It is a light control body characterized by being made of porous elongated plastic containing 20 wt% or more. In the present invention, porous plastic is not used as an electrolyte.
Since it is made by joining two transparent plates, the strength of the one-light object itself is 11+
It has the advantage that it has improved hardness, is less likely to break, and is not transparent even if it breaks. In addition, in the present invention, since the redox agent and solvent are sufficiently contained inside the porous η plastic, there is little deterioration in responsiveness, and the responsiveness is sufficient as a light control body, and a deep coloring density can be achieved. . Next, the light control body of the present invention will be explained in more detail. Any clear plate-like material such as closed glass, plastic, or a laminate of these is fine, and the thickness should be approximately 1 [according to the area of the light body. On this transparent plate, a falcon and a pole are formed, and above all - EC.
A layer of material is formed, forming the annual transparent plate. This kidney, as a pole, is usually transparent%, (6y is 1 month C
Then, a conductive film such as In2O5, SnO2, Au, etc. is evaporated.
It may be formed by stamping or the like, but in addition to this, metal electrodes such as metal wires or metal meshes may be formed in a linear or square shape. It may be formed into a scarlet shape, or it may be immersed in a transparent electrode. The IOC material mausoleum formed on this electrode is WO3, M
If OO3, etc. is electrically discolored or changes color in the visible light range, it is acceptable. The EC material layer of this first closed plate covers the entire surface of the 2i board ((provided, it is often possible to erase the entire surface of the board).
Colored pieces by changing the thickness of the gc material layer, etc.

[It is possible to partially control the number of rice grains by dividing it into areas, such as changing the title to river/bunmukai, displaying a specific Bunhyo or k1 map as a fixed redundant display, or using a separate operation from the dimming operation. You can do it like this. Nu, i', j'! ' A counter electrode is formed on the Qi/closing plate side of 2. In the present invention, these opposing electrodes may be simply transparent electrodes,
'Opposing due to the action of the redox agent in the bending angle Y Tj'■
・It can be solved by one movement as a pole. Of course, a thin plate of a transition metal fly compound that is always transparent in the visible light range or that is colored by a pressure opposite to that of the B and C substances on the first transparent plate side is formed on the opposite electrode, or a colored They may be provided in a linear or net shape in a mixture of carbon and EC material. The porous plastic snack of the present invention contains an electrolyte such as a redox agent and a solvent in an amount of 20 wt% or more, preferably 50 wtφ or more. Examples of this porous plastic include polyethylene, vinyl, and PMMA, which can be attached by thermocompression bonding or the like. Examples include polystyrene, polyvinyl alcohol, FoliaSecur 1, polycarbonate, nylon, acetate, silicone, polyurethane, etc., and are made into film or paste. M), porous plastic guiding cloth 1 containing solution solution
The rate has a large influence on the decoloring speed (preferably 10'-/crn or more, but the effect of the electrolyte contained therein is greater than that of the plastic material. Also, this porous plastic It is preferable to use a material that can be thermocompression bonded at a temperature of 150° C. or less. Among these porous plastics, polyurethane, butyral, silicone, and ethylene vinyl acetate are preferable, and polyurethane has particularly good light resistance, adhesiveness, and transparency. In addition, when using a thermocompression-bonded material such as thermosetting polyurethane, which does not have adhesive properties, adhesive material such as thermoplastic polyurethane can be used on both sides of the material. Thermosetting polyurethane allows for easy gap control during thermocompression bonding, and it is difficult to avoid defects such as bubbles protruding from the periphery.This porous plastic contains The 4-1M solution to be used is a mixture of a redox agent, a solvent, and a supporting electrolyte if necessary, and is preferably 20 wt% or more of the extra-porous plastic, preferably tri: 5.
Contains a dense liquid with a negative part of 0 w+t% or more. This is 1l-
In Italy where the content is less than 1.20 Wt, the response and coloring density tend to be opaque, so it is set at 20 wt% or more.
Naturally, the porous plastic material must be capable of absorbing at least 20 wt% of the defroster solution. In particular, the content is 50 wt or more. Note that "contained" here means that the electrolyte is not contained in the porous plastic;
This also includes cases where porous plastics swell as a result. The solvent used in the present invention is one that dissolves the redox agent and supporting electrolyte, has a high fat content and boiling point, that is, has a boiling point higher than the thermocompression bonding temperature, and is easily retained in the porous plastic. Examples of suitable materials include carbon-4-amides such as propylene carbonate, alcohols such as butyl alcohol, ethylene glycol, cellosolve, and calpitol. A redox agent is a material that reversibly exhibits an oxidation peak above the redox potential (E) and a continuous edox peak below the redox potential (E), for example, in a normal forward scanning method (portammetry).
This is used because the transparent electrode does not act as a reactant on the surface of the transparent electrode of ij, but acts only as a % electrode. REAOX has different values depending on the electrode and solvent used, or in the system used as an EC dimmer, one with a severe reduction potential lower than the driving voltage is used. -1v~IV(7
It is preferable to choose one that has a maximum value of Specifically σ・Fresh metal compound, FθO1s, 0u(NOs
) 2nd grade transition metal ions, redox dye compounds such as theonine, methylene blue, Li, Zn, NH
There are 4Igin iodine compounds, etc., and the concentration is 001
y/l-saturated light addition is sufficient, especially 0.1 to 0.5
Preferably, M/ is added. In the present invention, a preferred combination is polyurethane as a porous plastic, propylene carbonate as a solvent, an iodine compound, Lj as a size, and a redox agent as a redox agent.
L, < , *** Riko coloring/decoloring performance can be obtained. Also, support II as a component further added to KM, treatment
i, Debt is a substance that contains ions such as protons and alkali gold to color and decolorize EC materials, and substances containing lithium ions cause slight deterioration of EC materials. It is preferable that t-j, LiClO4,N(
C! 2Hs), 0104. Li01, LiBF4
etc., from 0.01 M/l to saturation amount, and 0.01 M/l to saturation amount.
~IM/ is mixed. Porous p-plastic containing kanpi r liquid? Methods for forming the electrolyte include impregnating a film-like porous plastic with an electrolyte solution, and dissolving the plastic material in a dense liquid, applying it, and semi-drying it to form a porous plastic containing an electrolyte solution. be. In the present invention, this porous plastic is placed between the back and the closing plate and integrated to form a light control body.
The transparent plate and porous plastic may be bonded by heat-pressure layering at a temperature of 150° C. or lower. In this case, the distance between the transparent plates may be about 50 to 1000 μm, and since it is not liquid, the distance between the transparent plates is the sum of both transparent plates. There is no risk of pole short-circuiting, there is no need to precisely control the spacing as with liquid crystals, and large-area light control bodies can be manufactured easily. Of course, a spacer may be provided so that this distance does not become smaller than the value of 1. If necessary, sealing wings may be provided around the periphery. In the present invention, porous plastic is used to Even if pressure is generated on the transparent plates due to wind pressure or other external forces, the distance between the transparent plates is always kept almost constant. Example 1 A 500 μm thick heat-resistant polyurethane film was swollen by immersing it in a propylene carbonate solution containing 0.2 M LiI at room temperature for 2 hours. After the film was completely washed and dried, it was sandwiched between the first glass plate on which 5cb was formed and the second glass plate on which TO was formed, and vacuum degassed for 30 minutes. After that, 130℃
15 minutes at 10 Ky/ct&'' and pressurize to 700μ
m-thick butyral film f, Liko, zy/ was immersed in dissolved ethylene glycol for 15 minutes to increase its weight by twice as much, and the process was carried out in the same manner as in Example below, with only the crimping temperature being 100°C. Manufactured without light control body. The coloring and fading properties of this light control body using 550 nm monochromatic light (]
(when V is applied) is shown in Fig. 2. In addition, in this Example 3, a 100 μm thick nylon film with a porosity of about 50% was made of LiI 0.2 M/L, Li01040.
．． A photoluminescent body was produced in the same manner as in Example 1, except that the weight was increased by about 2 times by immersing it in a propylene carbonate bath solution in which 5M/molecular weight was dissolved, and the pressure bonding temperature was 150°C. FIG. 3 shows the coloring and fading properties of this light control body (when +V is applied). Example 4 Polyurethane pellets with dimethylformide and external division υ)
Add 30 wt%, Lj, z O, I M/l, Li01040.2 for dimethylformide.
5M/L dissolved solution 500μm on iTo glass plate
It was coated to a thickness of
G glass plates were laminated and thermocompression bonded at 130° C. and 10 kg/i for 15 minutes to form a light control body. Figure 4 shows the coloring/decoloring properties (when V is applied) of this sample. Stone urethane film, ferrocene 0.05
M/l, L10104 o5M/l was immersed in a propylene carbonate solution for 1 hour at room temperature for impregnation.1. This causes the th chain to increase approximately twice. Lol this Firno Jfi! I9ri], thermocompression bonding was performed to obtain a light control body. The coloring/decoloring inertia of this light control body <when IV is applied) is shown in FIG. Referring to these results, all showed sufficient coloring/decoloring performance as a light control body, but Examples 1.2.4 and 5,
In other words, the electrolyte is 50% of the porous plastic.
Those containing more than wt% showed good coloring/decoloring performance. In addition, Example 1.5 using the polyurethane film showed particularly excellent performance, dark coloring, and quick changeability. In addition, the thermosetting polyurethane film used in Example 5 is less likely to cause protrusion or bubbles in the crimped area than the swollen thermoplastic polyurethane film.・While it has the advantage of being easy to bond, it does not have the ability to bond by itself during thermocompression bonding, so a thin thermoplastic polyurethane film with adhesive properties was used on both sides. In these examples, colored E for displaying the time to withdraw.
Although it is very long compared to C elements, it does not cause any visual or visual problems when used as a light control device, and its repeat life is longer than that of EC for display purposes.
There is no need to use it 10 times as with a device, and there is no need to use it 10 times, so it is fully usable as a light control body. As shown above, the light control body 1 of the present invention does not need to be provided with a counter electrode made of EC material, carbon, etc. like a normal EC element, and can be used as a transmission type light control body. It has good color resolution and properties, and even after repeated parentheses and decoloring, it does not suffer from deterioration such as the elution of corners or +#, and has the potential for various applications in the future.

[Brief explanation of the drawing]

1 to 5 are diagrams showing changes in transmittance due to monochromatic light of 550 nm in an example of the present invention. Kaya/Sen Kaya 2) 3 (Hunger 4 River Y, 5 Listen Otsu Kaya 3) A O/ 2) Throat (Distribution)

Claims (1)

[Claims] 211 A light control body comprising a first transparent plate on which an electrode and an electrochromic substance are laminated, and a second transparent plate on which a counter electrode is formed, facing each other with an electrolyte sandwiched therebetween,
Electrolyte is 20 wt% of redox agent and electric medium
A light control body characterized by being made of a porous plastic that is impregnated as described above. (2) The light control body according to claim 1, wherein the porous plastic is a polyurethane film.