JP2001125151A - Functional material laminate and method for producing the same - Google Patents

Abstract

(57) Abstract: A functional material laminate in which spacers are regularly arranged to reduce visual defects, prevent the functional material from falling due to its own weight, and maintain the layer thickness of the functional material uniformly over a long period of time. The manufacturing method is provided. SOLUTION: A functional material is arranged in a gap between substrates, at least one of which is partially or entirely transparent,
A spacer made of an adhesive is arranged so that the gap between the bases is uniform, and a functional material laminate made of a sealing material is arranged so as to surround the functional material. With a tensile shear bond strength of 0.
It was set to have a water resistance of 5 N / mm ² or more.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method in which a functional material such as a liquid or wet gel light modulating material or sound insulating material is laminated between two transparent plates, such as light modulating glass or soundproof glass. Functional material laminate.

[0002]

2. Description of the Related Art A functional material laminate (hereinafter simply referred to as a laminate) is formed by laminating a liquid or wet gel-like functional material between two transparent plates and sealing a peripheral portion thereof with a sealing material. As described in, for example, JP-A-6-255016, a thermotropic state in which the state changes from a transparent state to a cloudy state due to a temperature rise as a functional material between two glass plates arranged in parallel. There has been proposed a thermotropic light control glass in which various polymer aqueous solutions are laminated. This thermotropic light control glass has been spotlighted because it is more durable and light-shielding than light control glass using liquid crystal and the like, and is inexpensive.

[0003]

However, since the thermotropic polymer aqueous solution having fluidity is sealed between the glasses, the aqueous solution gradually descends by its own weight unless the glass surface is used horizontally. The glass bends, and the layer thickness of the aqueous solution becomes larger toward the lower side, which causes a problem that the refractive index of the light control glass varies depending on the portion and that the light shielding state becomes uneven. Moreover, the larger the area of the light control glass is, the larger the difference in the layer thickness of the aqueous solution tends to be. For this reason, in a light control glass in which a highly viscous liquid such as an aqueous solution of a thermotropic polymer having fluidity is sealed between the glasses, a technology for keeping the layer thickness of the high viscous liquid uniform is practical. This is a very important issue in securing the area.

At present, the following chemical methods, structural and mechanical methods have been proposed as methods for solving this problem.

As a chemical method, a method has been proposed in which a polymer used as a component of a highly viscous liquid is partially crosslinked to suppress the flow as a crosslinked swelling gel. However, if the crosslink density is increased to such an extent that the drop of the highly viscous liquid can be prevented, the original functionality, durability and the like are affected, and the fatalities such as insufficient reversible stability of the light control glass cannot be obtained. Defects will occur.

As a structural and mechanical method, a method using glass beads as a spacer has been proposed. As a method for fixing the glass beads, a method has been proposed in which one of the two glasses is made of glass on which a synthetic resin film is arranged, and the glass beads are immersed in the synthetic resin film and fixed. In this method, the glass beads are sprayed on a thermotropic polymer aqueous solution applied between the glass plates in the form of dots or lines at the time of production, and in the subsequent pressing step, the glass beads are sunk into the film and fixed. When the thermotropic polymer aqueous solution spreads in the pressing process, the glass beads also move, and thus have a visual defect that the arrangement of the glass beads becomes irregular.

Further, a method of fixing glass beads and a glass plate with an adhesive has been proposed. The method of fixing the glass beads by placing the glass beads on a glass plate and applying an adhesive is as follows. The operation of standing on the top is complicated and not practical.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a functional material laminate in which spacers are regularly arranged to reduce visual defects, prevent the functional material from lowering by its own weight, and maintain the layer thickness of the functional material uniformly over a long period of time. An object of the present invention is to provide a manufacturing method thereof.

[0009]

According to a first aspect of the present invention, there is provided a functional material laminate comprising a functional material disposed in a gap between at least one part or all of a transparent base, and a gap between the bases. In a functional material laminate consisting of a sealing material, a spacer made of an adhesive is arranged so that the adhesive becomes uniform, and the adhesive is immersed in water. 0.5 in adhesive strength
A functional material laminate having water resistance of N / mm ² or more. In this functional material laminate, the gap between the bases, at least one of which is partially or wholly transparent, is uniformly maintained via the spacer, so that the functional material is prevented from lowering, and the light control glass is prevented. Is maintained uniformly over the entire surface, and variations in the dimming function and the like can be prevented. In addition, since the adhesive having good water resistance is used for the spacer, the gap between the substrates can be maintained for a long time. Further, since the adhesive is used for the spacers, it is possible to easily and regularly arrange the spacers, and to obtain a functional material laminate having few visual defects.

Here, it is preferable that the spacer is arranged only on one side of the base. In obtaining the laminate of the present invention, the number of steps for arranging spacers can be reduced. Preferably, the adhesive is a silicone-based adhesive. Silicone-based adhesives have particularly good water resistance and weather resistance, and are preferable without coloring due to deterioration.

According to a fourth aspect of the present invention, in the functional material laminate, the functional material contains a cellulose derivative and water as constituent components. Such a functional material functions as a thermotropic material that reversibly changes between a transparent state and a cloudy state due to a temperature change.

A functional material laminate according to a fifth aspect of the present invention is such that the functional material comprises a nonionic surfactant and, if necessary, an inorganic electrolyte in addition to the constituent components. By adding a nonionic surfactant, the stability of the cloudy state can be significantly improved, and the uniform cloudy state can be maintained for a long time. Further, by adding an inorganic electrolyte as required, it is possible to control the temperature at which the state changes between transparent and cloudy, which is preferable.

In the functional material laminate according to the sixth aspect, at least one side of the substrate has an ultraviolet shielding function of 95% or more, so that the functional material and the sealing material are prevented from being deteriorated by ultraviolet rays. This is preferable.

According to a seventh aspect of the present invention, in the method of manufacturing a functional material laminate, an adhesive is arranged and cured between at least one part or all of a transparent substrate to form a spacer, A material is enclosed.

In the method for producing a functional material according to claim 8,
Since the internal space of the temporary laminate in which the functional material is disposed is made substantially in a vacuum state, and the functional material is sealed between the substrates, the functional material can be filled between the substrates so that air bubbles are not mixed. .

As set forth in claim 9, it is preferable that the viscosity of the adhesive to be disposed before curing is 10 to 1000 Pa · s. The viscosity of the adhesive before curing is 10 to 1000 Pa
In the case of s, it is preferable that the viscosity is not too low and too wide at the time of disposition, and that the viscosity is too high and it is difficult to handle.

The functional material laminate of the present invention and the functional material laminate obtained according to the production method of the present invention are used for vertical windows, skylights, louver windows, and the like in general houses and buildings.
Sliding windows, bay windows, bay windows, casement windows, side windows,
Casement windows, vertical sliding windows, corner windows, terrace doors,
For waist panel doors, doors inside high places, patio doors, sunrooms, greenhouse glass, as well as arcades and top lights for large facilities, sunroofs for cars, rear windows, side windows, carports, building exterior wall materials and heat storage walls, etc. Can be used.

[0018]

Embodiments of the present invention will be described below with reference to the drawings.

First, the schematic structure of the functional material laminate will be described. As shown in FIG. 1, the functional material laminate 1 has a plurality of transparent bases 2 and 3 at least partly or wholly arranged adjacent to each other, and is disposed in parallel with each other. 5, a functional material 4 is encapsulated via a spacer 5, and a spacer 6 is arranged on the base 2. Spacer 6
May be arranged only on the base 2 as shown in FIG.
As shown in FIG. 2, they may be arranged on both the bases 2 and 3.
The sealing material 5 may have a one-stage sealing structure as shown in FIG. 1, or a two-stage sealing composed of a first sealing material 5a and a second sealing material 5b as shown in FIG. It may have a structure.

Further, the functional material laminate 1 is further
It is also possible to form three or more substrates by laminating a plurality of substrates with the same or different functional materials interposed therebetween. In this case, it is also possible to form an air layer not filled with the functional material between the substrates to enhance heat insulation and sound insulation.

Next, specific examples of the members constituting the functional material laminate 1 will be described.

When the functional material laminate 1 is used as a light control glass, a thermotropic material that changes state between a cloudy state and a transparent state due to a temperature change is used as the functional material 4.

Generally, as the thermotropic functional material having such properties, there is an isotropic aqueous solution of a nonionic surfactant or a nonionic water-soluble polymer exhibiting a cloud point phenomenon. Specific examples of such functional materials include:
Polyvinyl alcohol partially acetylated product, polyvinyl methyl ether, methyl cellulose, polyethylene oxide, polypropylene oxide, a copolymer of ethylene oxide and propylene oxide, a polysaccharide derivative having a hydroxypropyl group (eg, hydroxypropyl cellulose, hydroxypropyl methyl cellulose, etc.), polyvinyl Methyl oxazolidinone, poly N-substituted acrylamide derivatives (eg, poly N-isopropylacrylamide, poly N-ethoxyethyl acrylamide, etc.), poly N, N-disubstituted acrylamide derivatives (eg, poly N-
Aqueous solution of a water-soluble polymer such as methyl-N-ethylacrylamide) or a copolymer thereof, or a polymer solution using an alcohol or the like as a solvent. Among these exemplified substances, a polysaccharide derivative having a hydroxypropyl group having a good hydrophobic-hydrophilic balance is preferable in terms of sufficiently shielding sunlight, and has a structurally stable cellulose in the main chain. Cellulose derivatives, ie, hydroxypropylcellulose, are preferred, but the invention is not limited thereto. It is also within the scope of the present invention to add additives such as antioxidants, antifreezing agents, and stabilizers to these solutions.

When an aqueous solution of a cellulose derivative such as hydroxypropylcellulose is used alone, if it is left in a cloudy state for a long time, a non-uniform phase separation state may occur with the passage of time. Non-uniform phase separation refers to a state in which aggregates such as hydroxypropylcellulose aggregated to show a cloudy state are further aggregated and settled with the passage of time, so that they are separated into water as a solvent and two phases. However, by adding a surfactant, particularly a nonionic surfactant as described in JP-A-6-255016, a uniform phase separation state can be maintained for a long time.

As the nonionic surfactant used herein, those having a molecular weight of about 3000 or less, more preferably about 1000 or less in the oligomer region are easily used, and the ionic group has a very hydrophilic group. Since it is large, the hydrophobic group is preferably a higher alkyl group for balancing. Specific examples include polyoxypropylene 2-ethyl-2-hydroxymethyl-1,3-propanediol (polyoxypropylene trimethylolpropane ether), polypropylene glycol, diethylene glycol monobutyl ether, polyoxypropylene glycerin, and sodium lauryl sulfate. For example, any substance having the same action can be used.

In order to control the temperature at which the state of the functional material changes, the temperature at which the state changes can be arbitrarily shifted to a lower temperature by adding an inorganic electrolyte such as sodium chloride as needed. Can be.

Such a functional material is suitable because it has excellent weather resistance and stability and is relatively inexpensive.

A gel obtained by crosslinking a part of these water-soluble polymers and swelling in a solvent such as water may be used as the functional material. For example, as described in U.S. Pat. No. 5,377,072, a gel obtained by partially cross-linking the above-mentioned polymer solution, for example, a gel-like functional material comprising a partially cross-linked product of hydroxyethyl methacrylate-hydroxyethyl acrylate copolymer and water. Materials are one of the preferred examples. However, various materials other than those described above may be used as long as the material is a liquid or wet gel-like functional material that changes between a cloudy state and a transparent state due to a temperature change.

Further, if the functional material 4 is a liquid or wet gel-like material, a photochromic material whose light transmittance changes according to a change in light, or a light transmittance changes according to a voltage change It is possible to use various light modulating materials such as an electroluminescent material.

As the substrates 2 and 3, usually, flat inorganic glass or organic glass such as polycarbonate is used. Heat reflection glass, low radiation glass, laminated glass, tempered glass, double-strength glass, UV cut glass, meshed glass, template glass, ground glass, etc. can be arbitrarily adopted.
The bases 2 and 3 are usually made transparent, but a part of the bases 2 and 3 may be made opaque. Alternatively, glass in which a synthetic resin film having a function of preventing ultraviolet rays for shielding ultraviolet rays from being laminated on one side of the substrates 2 and 3 may be used. Further, it is particularly preferable to use a glass plate having an ultraviolet shielding factor of 95% or more on one of the bases 2 and 3. . When the ultraviolet ray shielding rate is 95% or more, it is possible to remarkably prevent the functional material and the sealant from being deteriorated by ultraviolet rays, and to suppress the discoloration of curtains and folds in a room when used as window glass. This is preferable because it can prevent skin aging. Examples of the glass having an ultraviolet shielding ratio of 95% or more include a laminated glass obtained by adding an organic ultraviolet absorbing material such as a salicylic acid ester type, a benzophenone type, a benzotriazole type, a cyanoacrylate type, and a benzoate type to an intermediate film, a salicylic acid ester type, Glass obtained by adding an organic UV absorber such as benzophenone, benzotriazole, cyanoacrylate, or benzoate to a synthetic resin film and laminating the glass; Ce ion, Fe ³⁺ , Ti ⁴⁺ , Cr ⁶ in the glass ⁺ ,
Examples thereof include UV cut glass to which two or more kinds of ions such as V ⁵⁺ are added. As the spacer 6 made of an adhesive,
An adhesive having a water resistance of 0.5 N / mm ² or more in tensile shear adhesive strength in a saturated water absorption state by immersion in water can be arbitrarily selected. More preferably, the tensile shear adhesive strength in a saturated water absorption state is 1 N / mm ² or more. Tensile shear bond strength of 0.5N under saturated water absorption
/ Mm ² , when the opposing glass contacts the spacer 6, the opposing glass
Is not preferable because the spacer 6 may come off due to a load applied to the spacer 6. For example, when hemispherical spacers 6 each having a diameter of 1 mm are arranged at a pitch of 50 mm, and glass having a thickness of 3 mm faces each other, a single spacer bears a load applied by a glass of 50 mm square. 0.2 N / mm ² and becomes, is preferably considering the safety factor 0.5 N / mm ² or more, even 1.0 N / mm ² or more and more preferably 1.5 N / mm ² or more. Evaluation of water resistance is based on JIS K 6850.
A test piece is prepared using glass-glass as the adherend according to the above-mentioned method, and the tensile shear adhesive strength in a saturated water absorption state by immersion in water at 20 ° C. is measured. The test piece which has been brought into a saturated water absorption state by immersion in water can be obtained, for example, by immersing in water for 30 days. Examples of adhesives having good water resistance include amine curing, silicone resin curing, modified silicone resin curing epoxy resin adhesive, moisture curing silicone adhesive, moisture curing modified silicone resin adhesive,
A photo-curable acrylic adhesive can be exemplified. Also, among the above adhesives, silicone resin adhesives, water resistance, that the weather resistance is particularly good, a transparent adhesive can be selected,
Further, it is preferable because transparency can be maintained for a long time.
Further, one kind or two or more kinds of adhesives may be mixed and used. It is also within the scope of the present invention to add additives such as antioxidants, thickeners, stabilizers and inorganic fillers to these adhesives.

As the sealing material 5 adjacent to the functional material, any material can be selected as long as it satisfies the following required characteristics.
It is also preferable to use two or more kinds in combination, which is within the scope of the present invention. The properties required for the sealing material of the functional material laminate of the present invention include (1) good adhesion to the glass and the synthetic resin film constituting the functional material laminate, and (2) high gas retention. (3) that it is difficult for gas to enter the functional material and release of the vapor of the functional material through the sealing material, and (3) at the contact portion with the functional material,
It does not produce reactions that affect its properties,
Not release any substances, (4) ensuring durability such as light resistance and heat resistance according to the place of use;
And so on. As a sealing material satisfying such characteristics, a method using an adhesive isobutylene-based resin sealing material as the sealing material 5 in FIG. 1 or a first sealing material 5a as shown in FIG.
It is also possible to adopt a two-stage sealing configuration of the second sealing material 5b and the second sealing material 5b, and both are within the scope of the present invention. A material having a high gas retention property such as a thermoplastic butyl rubber-based, polyisobutylene-based sealing material, or an adhesive isobutylene-based sealing material is used as the first sealing material 5a, and deacetic acid is used as the outer second sealing material 5b. The functional material of the present invention can be selected from materials exhibiting good adhesion, such as a mold-type or deoxime-type silicone sealing material, an ultraviolet-curing acrylic adhesive, and an adhesive isobutylene-based resin sealing material. Although a preferred configuration of the sealing material of the laminate can be exemplified, the present invention is not limited to this.

Next, a method of manufacturing the functional material laminate 1 will be described.

In this manufacturing method, at least one of the substrates 2
On top of this, an adhesive is arranged and cured to form a spacer 6, a functional material 4 is arranged, a sealing material 5 is arranged around the upper surface of at least one of the bases 2, and the other base 3 is attached to one of the bases 2. A temporary laminating step of manufacturing a temporary laminated body 1 'by superimposing the temporary laminated body 1' on the base 2; and maintaining the temporary laminated body 1 'under a reduced pressure atmosphere so that the internal space of the temporary laminated body 1' is substantially in a vacuum state. The sealing material 5 is brought into close contact with the base 3 while being deformed, thereby forming the base 2,
And a vacuum encapsulation step of enclosing the functional material 4 between the three.

First, the temporary laminating step will be described.

By a dispenser or a screen printing method, the adhesive is arranged on the substrate 2 in a hemispherical shape in a linear, broken, or stitched shape. It is preferable that they are arranged in an independent hemisphere while maintaining a constant interval, because they are not visually noticeable. The viscosity of the adhesive before curing is preferably 10 to 1000 Pa · s. The pressure is more preferably from 20 to 800 Pa · s, and still more preferably from 50 to 500 Pa · s. If the viscosity of the adhesive before curing is less than 10 Pa · s, the adhesive spreads excessively at the time of arrangement, and it is difficult to obtain a sufficient spacer height of, for example, 0.1 mm or more, which is not preferable. Also,
If the viscosity exceeds 1000 Pa · s, it is not preferable because the adhesive is difficult to handle because it is difficult to separate from the dispenser. The adhesive can be cured by leaving it in an environment with a relative humidity of 50% or more, for example, in the case of a moisture-curable silicone adhesive, depending on the curing mode of the adhesive. In the case of a photocurable acrylic adhesive, it can be cured by irradiating light with a high-pressure mercury lamp or the like.

Subsequently, a required amount of the functional material 4 is applied to the base 2, and a sealing material 5 is attached to the base 2.

The functional material 4 is arranged on the base 2 in a predetermined pattern. Specifically, they are arranged in a substantially circular shape at appropriate intervals, or are entirely applied to the inside of the sealing member 5 with an interval therebetween. As an arrangement method, an unnecessary portion may be masked and applied, and then applied, but is preferably applied quantitatively by a dispenser. At this time, if the coating is performed using a dispenser having a plurality of coating heads, the coating can be performed quantitatively and quickly.

The adhesion of the sealing material 5 can be performed using an extruder or a coating machine provided with a heating device. In this case, an apparatus for applying a primary seal of a double-sealed double-glazed glass can be used almost as it is. Further, those processed in advance into a tape shape, a string shape, or the like and arranged in a release tape shape are preferable because they can be easily handled at room temperature. In addition, it is preferable that the functional material 4 is attached before the functional material 4 is disposed because the functional material 4 can be prevented from flowing out of the base 2 when the functional material 4 is applied.

Next, the reduced pressure enclosing step will be described.

As shown in FIG. 4, the temporary laminated body 1 'is depressurized on the lower side using a decompression device 7 having two adjacent decompression tanks 8 and 9 partitioned by a flexible film body 10. After setting the inside of the tank 9 and depressurizing the two decompression tanks 8 and 9 to make the internal space in which the functional material 4 is present substantially in a vacuum state, as shown in FIG. Then, the decompression of the upper decompression tank 10 is released, and the substrate 3 is pressed by the film body 10 under normal pressure or pressure, and the sealing material 5 is brought into close contact with the substrate 3 without any gap. The base body 3 is further pressed by the film body 10 to form the sealing material 5.
And the step of filling the inner space 11 with the functional material 4 can be continuously performed in the decompression device 7 while deforming and bringing the two into contact with each other, so that both steps can be performed easily and efficiently, which is preferable. .

Further, since the temporary laminate 1 'has an internal space formed in an airtight manner via the bases 2, 3 and the sealing material 5, the temporary laminate 1' is pressed by a pressing device such as a hydraulic press which is vertically parallel. Alternatively, the filling of the interior space of the functional material 4 may be assisted physically. Since the undeveloped portion of the functional material 4 in the internal space is in a substantially vacuum state, even if it is taken out of the decompression device 9 and left alone, the bases 2 and 3 approach each other due to the atmospheric pressure. It can be pressed and filled with the functional material 4.

[0042]

Next, an example of a specific example will be described.

Example 1 Float glass (150 mm
× 150 mm × 3 mm thick) Silicone adhesive (KE41, manufactured by Shin-Etsu Chemical Co., Ltd.) Tensile shear bond strength 30 days after immersion in water when the adherend is glass: 2.5
N / mm ² , viscosity: 100 Pa · s) were arranged under the conditions of a pitch of 25 mm and an arrangement height of 0.5 mm. The glass on which the silicone-based adhesive was placed was left for 3 days in an environment of 25 ° C. and a relative humidity of 60%, and was cured by moisture.

The functional materials used were prepared as follows. Hydroxypropylcellulose (HPC-L, manufactured by Nippon Soda Co., Ltd., hereinafter referred to as HPC) as a cellulose derivative, and polyoxypropylene trimethylolpropane ether as a nonionic surfactant (Sannicks Triol TP-400, manufactured by Sanyo Chemical Industries, Ltd.) , A 3% aqueous sodium chloride solution as an inorganic electrolyte and water, respectively:
The mixture was mixed at a weight ratio of 1: 9. As a sealing material, a hot-melt butyl for multi-layer glass (Naphthotherm butyl tape 1700 manufactured by PMG Co., Ltd.) as a first sealing material that comes into contact with the functional material, and is arranged outside the first sealing material in a stacked state. As the second sealing material to be used, a silicone sealing material (KE420 manufactured by Shin-Etsu Chemical Co., Ltd.) was used.

The functional material is arranged in dots at a pitch of 25 mm on the glass on which the silicone resin is arranged and cured, and the sealing material is arranged at a position 10 mm from the periphery of the glass.
Float laminated glass (150mm ×
150 mm × 4 mm (2 mm + 2 mm), ultraviolet ray shielding rate of 99% or more) were stacked, and sealing was performed with a decompression device to obtain a functional material laminate.

The appearance of the obtained functional material laminate at the initial stage and after 30 days of outdoor exposure was observed. Table 1 shows the results.

(Example 2) Instead of laminated glass, 50
Float glass (150 x 150 x 3) with a synthetic resin film made of polyethylene terephthalate with a thickness of
mm, and an ultraviolet ray shielding rate of 99% or more).

Comparative Example 1 An acrylic adhesive (Alontite VL-1303Y, manufactured by Toagosei Co., Ltd.) was used as the adhesive.
Example 1 except that when the adherend was made of glass, tensile shear strength after immersion in water 30 days after immersion in water: exfoliation from glass by immersion in water, viscosity: 100 Pa · s) and curing was performed by irradiating with light for 10 minutes after arrangement. Same as.

Comparative Example 2 The procedure of Example 2 was repeated, except that glass beads (0.5 mm) were used as spacers instead of the adhesive, and the spacers were placed on functional materials arranged in a dotted pattern.

As is evident from Table 1, in Comparative Example 1 using an adhesive having poor water resistance, peeling of the spacer was observed due to outdoor exposure. In Comparative Example 2 using glass beads for the spacer, there was a visual defect in which the arrangement of the spacer was irregular. On the other hand, Examples 1 and 2 in which a water-resistant adhesive having a tensile shear strength of 0.5 N / m ² or more in a saturated water-absorbing state after 30 days of immersion in water were used for the spacer.
In the functional material laminate of No. 5, spacers were regularly arranged, and appearance defects such as peeling were not observed.

[0051]

[Table 1]

[0052]

The effects of the present invention have been made clear by the examples.

According to the functional material laminate of the first aspect, the gap between the substrates can be maintained for a long time. Furthermore, since the adhesive is used for the spacer, it is possible to easily and regularly arrange the spacer, and there are few visual defects.

If the spacer is arranged on only one side of the base as in claim 2, the step of arranging the spacer can be reduced. , Water resistance and weather resistance are particularly good, and there is no coloring due to deterioration.

As described in claim 4, by using a cellulose derivative as a main component, a functional material which is inexpensive and has excellent durability can be obtained. Further, as described in claim 5, by adding a nonionic surfactant, it is possible to obtain a functional material which can be repeatedly transparent and opaque and can be maintained in a uniform turbid state for a long period of time. Further, by adding an inorganic electrolyte, an optimum state change temperature according to the place of use can be set.

As described in claim 6, at least one side of the substrate has an ultraviolet ray shielding function of 95% or more, so that the functional material and the sealing material can be prevented from being deteriorated by ultraviolet rays.

According to the manufacturing method of the seventh to ninth aspects, a good functional material laminate can be manufactured.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of a functional material laminate of the present invention.

FIG. 2 is a cross-sectional view of a main part of a functional material laminate having another configuration.

FIG. 3 is a sectional view of a main part of a functional material laminate having another configuration.

FIG. 4 is an explanatory view of a method for producing a functional material laminate.

FIG. 5 is an explanatory view of a method for producing a functional material laminate.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Functional material laminated body 2 Substrate 3 Substrate 4 Functional material 5 Sealing material 5a First sealing material 5b Second sealing material 6 Adhesive material layer 7 Spacer 1 'Temporary laminated body 8 Pressure reducing device 9 Pressure reducing tank 10 Pressure reducing tank 11 Membrane

Claims (9)

[Claims] Claims: 1. A functional material is arranged in a gap between substrates, at least one of which is partially or entirely transparent,
A spacer made of an adhesive is arranged so that the gap between the substrates is uniform, and a functional material laminate made of a sealing material is arranged so as to surround the functional material. With a tensile shear bond strength of 0.
A functional material laminate having a water resistance of 5 N / mm ² or more. 2. The functional material laminate according to claim 1, wherein the spacer is disposed only on one side of the base. 3. The functional material laminate according to claim 1, wherein the adhesive is a silicone-based adhesive. 4. The functional material laminate according to claim 1, wherein the functional material comprises a cellulose derivative and water as constituent components. 5. The functional material according to claim 1, wherein a nonionic surfactant and, if necessary, an inorganic electrolyte are added to the constituent components. The functional material laminate according to the above. 6. The functional material laminate according to claim 1, wherein at least one side of the substrate is a substrate having an ultraviolet shielding factor of 95% or more. 7. A functional material, comprising: an adhesive arranged and cured between at least one part or all of a transparent substrate to form a spacer, and encapsulating the functional material. Production method. 8. A spacer is formed by disposing an adhesive on at least one of the substrates to form a spacer, disposing a functional material, disposing a sealing material around an upper surface of at least one of the substrates, and disposing a sealing material on at least one of the substrates. And a temporary laminating step of manufacturing a temporary laminate by superimposing the temporary laminate on a reduced pressure atmosphere so that the internal space of the temporary laminate is substantially in a vacuum state. The method according to claim 7, further comprising a pressure-reducing sealing step of sealing the functional material between the substrates by bringing the functional material into close contact with the substrates while being deformed. 9. The method according to claim 1, wherein the adhesive before curing has a viscosity of 1
8. The pressure is 0 to 1000 Pa.s.
Or a method for producing a functional material laminate according to item 8.