JPH07638Y2 - Solar control plate - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is used as slats for horizontal and vertical blinds, curtains, blinds for roller blinds, external louvers, eaves, window glass, etc. The present invention relates to a solar radiation adjusting plate that appropriately adjusts incident sunlight.

[Conventional technology and its problems]

As for those that can adjust solar radiation with window glasses and blinds,
A flexible film, such as a polyethylene terephthalate film, having a film body provided with a metal vapor deposition layer of aluminum or the like attached thereto is put into practical use.

On the other hand, as shown in Japanese Utility Model Publication No. 55-33027, a metal or / and metal compound layer is laminated on a transparent synthetic resin substrate, and a silicon compound layer is formed on the outermost surface to further improve durability. Something to do is also proposed.

However, these simply increase the reflectance, a portion of the solar heat is absorbed into the transparent synthetic resin substrate, it is not possible to prevent the temperature rise of the substrate itself due to this,
As a result, the amount of radiant heat to the indoor side is large.

For example, with regard to blinds, even if the blinds are closed, "hot flashes" may be felt from the blinds heated by the sun's rays, which may be uncomfortable.

An object of the present invention is to provide a solar radiation adjusting plate which eliminates the inconvenience of the conventional example and can suppress the heat radiation to the indoor side, so that the solar radiation shielding effect is increased and the durability is also excellent.

[Means for solving problems]

To achieve the above object, the present invention provides a transparent substrate A,
A film layer B made of a flexible organic polymer solid, a fluorine compound layer C, a metal or metal compound layer D, and an adhesive layer E are provided on one side of a substrate A on which each layer is transparent. B-metal or metal compound layer D, or metal or metal compound layer D-film layer B) -fluorine compound layer C are laminated in this order, and only the fluorine compound layer C or the adhesive layer E is provided on the other surface of the transparent substrate A. -(Film layer B, or
The gist is that the film B-metal or metal compound layer D, or the metal or metal compound layer D-film layer B) -fluorine compound layer C is laminated in this order.

[Action]

According to the present invention, in addition to the metal layer acting as a reflection layer, the fluorine compound layer exhibits a selective radiation characteristic of selecting a certain wavelength and radiating it to the outside. The heat radiation of can also be suppressed. Further, since the fluorine compound layer has excellent durability, it also serves as a protective layer.

〔Example〕

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is an explanatory view showing one embodiment of the solar radiation adjusting plate of the present invention, in which A is a transparent substrate, B is a flexible organic polymer film layer, C is a fluorine compound layer, and D is a metal or metal compound. Layer E is an adhesive layer.

The transparent substrate A is a substrate constituting a window glass, a blind slat, or the like, and a synthetic resin plate is suitable, but glass or the like may be used. The transparent synthetic resin plate has a visible light transmittance (wavelength of 550 mμ) of 40% or more, and a thickness of 0.
2 mm or more is preferable. For example, polymethylmethacrylate, polycarbonate, polyvinyl chloride, polystyrene, styrene-acrylonitrile half polymer, ABS resin,
Examples include polyethylene, polypropylene, polyester, polyester-styrene copolymer, cellulose acetate, and epoxy resin.

Examples of the organic polymer film layer B include polyester polymers such as polyethylene terephthalate, polybutylene terephthalate, polyethylene-2.6 naphthalene dicarboxylate, polyethylene-1.2 diphenoxyethane-P, P 'dicarboxylate, polypropylene and polyethylene. Such as polyolefin, so-called nylon
6, polyamide such as nylon-12, polyimide having a five-membered ring imide bond in the polymer main chain, cellulose derivative such as cellulose ester, polystyrene, polycarbonate, acrylic ester copolymer, methacrylic ester copolymer, polychlorination There are vinyl, polyether, polyester ether, and the like, and the copolymers and blends thereof are also included, but are not necessarily limited thereto.

The thickness of the film layer B is preferably in the range of 6 to 200 μm, but usually 12 to 100 μm can be preferably used in view of workability and cost.

The fluorine compound layer of C is, for example, polytetrafluoroethylene, polychlorotrifluoroethylene, polyvinylidene fluoride, polyvinyl fluoride, tetrafluoroethylene-hexafluoropropylene copolymer, tetrafluoroethylene-ethylene copolymer, tetrafluoro. It is composed of an ethylene-perfluoroalkyl vinyl ether copolymer, a chlorotrifluoroethylene-ethylene copolymer, and the like.

These are the main components, and if necessary, curing catalysts, additives (e.g., adhesion promoters, antistatic agents, PH adjusters, wetting improvers, plasticizers, stabilizers, antioxidants, ultraviolet absorbers, lubricants, and deodorants). (Foaming agent, thickening agent, coloring agent, etc.), etc. or dissolve in a solvent and heat or UV, β rays,
Examples thereof include a composition obtained by curing with radiation such as γ rays. Of course, those which are pre-condensed in a solution state are also included. You may hydrolyze after mixing 2 or more types.

The metal or metal compound layer of D is plated, vacuum deposited,
It is formed by sputtering, ionization electrostatic plating, or the like.

For plating, for example, by electroless plating, palladium or gold is vacuum-deposited or sputtered on the base film to provide a surface modification layer, and electroless plating is performed.

The vacuum deposition includes, for example, a resistance heating method, a high frequency induction heating method, a heating method using an electron beam,
As high vacuum as possible, for example 10 ^-3 Torr or more, preferably 10 ^-3 Torr
It is desirable to evaporate and adhere at ^-4 Torr or more.

As the sputtering, various ordinary sputtering methods such as direct current sputtering, high frequency sputtering, cathode sputtering, and plasma sputtering can be used.

Ionization electrostatic plating includes a plasma method that uses ions in plasma, an ion beam method that draws and uses ions in a high vacuum region, and a cluster ion method.

These metals or metal compounds may be deposited or attached by a single method, or two or more methods may be used. Further, the metal compound may be used as an evaporation raw material from the beginning, or may be compounded after the metal layer is provided. The metal or metal compound layer may be a single composition or a mixture layer, or different composition layers may be laminated.

Examples of the metal or metal compound of D used in the present invention include A
l, Sb, As, B, Cd, Cr, Ge, Fe, Mg, Si, Ti, Co, Cu, Au, In, Ir, Pb, M
n, Mo, Ni, Pd, Pt, Rh, Se, Ag, Ta, Te, Sn, W, V, Zn, Zr or any of the above alloys or oxides, nitrides, borides, carbonides, sulfides, chalcogenides The compounds include, but are not limited to, metal compounds such as substances, salts and compounds of metals.

If transparency is required so that the outside view can be seen from the room, the thickness may be reduced, or one that blocks ultraviolet rays and transmits visible light, for example, VI such as S, Se, Te, etc. A compound obtained by combining a group element and a metal can be effectively used.

The thickness of the metal or / and metal compound layer D is 0.01A
A range of up to 2000 mμ is desirable, and a thin range is applicable as an adhesion promoting layer.

The adhesive layer of E is not particularly limited, and examples thereof include saturated polyester resin, unsaturated polyester resin, alkyd resin, phenol resin, urea resin, melamine resin, epoxy resin, urethane resin, vinyl resin, acrylic resin, and polyolefin. (Polyethylene, polypropylene, etc.), natural resin (eg pine resin, dammer, terpene resin, coumarone indene resin, natural rubber), water-soluble resin (eg polyvinyl alcohol, methyl cellulose, carboxymethyl cellulose, polyacrylamide, polyvinyl pyrrolidone, polyethylene imine), It may be conveniently selected from various adhesives such as synthetic rubber, and may be a copolymer or a blend. Further, additives (for example, antistatic agent, antioxidant, ultraviolet absorber, adhesion promoter, wetting improver, plasticizer, lubricant, thickener, colorant, etc.) can be added as appropriate.

The thickness of the adhesive layer E is preferably 100 μm or less, and more preferably 50 μm or less. If it becomes thicker, it takes time to apply and dry, and there is a problem in workability. Another purpose that the adhesive layer is preferably thinned is that the effect of improving durability becomes greater as the abrasion-resistant film is softer than the film layer between the synthetic resin plate and the abrasion-resistant film.

In the embodiment shown in FIG. 1, the components A to E are
Laminated in combination with C-B-D-E-A-C.

In addition, as shown in FIG. 2 as the second embodiment, CD-
B-E-A-C may be used, and although not shown, as another embodiment, C-B-D-E-A-E-B-C, C-
D-B-E-A-E-B-C, C-B-D-D-A-E-E-
D-B-C, C-D-B-E-A-E-B-D-C, C-B-
It is also conceivable that the layers are laminated in any order of D-A-E-B-D-C.

In forming such a laminate, the adhesive layer E may be provided on the film layer B side and then laminated with the substrate A,
Alternatively, it may be provided on the substrate A side and then laminated with the film layer B, or may be provided on both the film layer B side and the substrate A side and then laminated.

In addition, surface treatment (eg corona discharge treatment, corona discharge treatment in an inert gas, flame treatment, reverse sputtering treatment, treatment with a flame loaded with an electric charge, etc.) to improve adhesion between layers as necessary. Or a surface modification layer may be provided, and if necessary, a metal protective layer or a coloring layer may be provided.

Coloring can be performed by depositing the substrate A or / and a film, adding a colorant to the above-mentioned coating material, or installing a new color layer.

Next, the usage will be described.

First, the principle of the low temperature effect of the present invention will be described.

As is well known, atmospheric radiation has a portion with a small radiation density called a window of the atmosphere at 8 to 13 μm.

For this reason, when an object with high absorptivity (that is, emissivity) between 8 and 13 μm and high reflectance at other wavelengths (this part is called selective radiator) is placed facing the atmosphere, a black body Is cooled to a lower temperature.

Fig. 4 shows the principle of the black body (emissivity ελ = 1.
It is the radiant energy balance in the case of 0).

The downward radiation of the atmosphere emits the same radiation as the black body radiation at the same temperature as the ambient outside temperature at wavelengths other than 8 to 13 μm, so when the temperature of the black body is below the ambient temperature, the radiation balance of this part becomes + and the temperature drop. Is limited.

On the other hand, if it is ideally 8 to 13 μm, the absorption rate (that is, emissivity)
Is 0.5 (ε = a = 0.5), otherwise 0.1 (ε = a = 0.1)
If there is an object, the energy balance becomes negative and lowers even at the same object temperature as in FIG. 4, as shown in FIG.

In reality, an object having such a stepwise wavelength characteristic has not been published other than the present invention, but the present invention is the third one.
It is obtained by combining the fluorine compound layer C having the characteristics shown in the figure and the metal or the metal compound layer D.

According to the present invention, solar radiation is partially reflected by the metal or metal compound layer D to return to the outside, partially transmitted to the room, and partially absorbed to the temperature of the plate (substrate A). Divided into those that raise.

By the way, it is considered that most of the light that did not pass through is absorbed.

By the way, when, for example, Aflex (trademark) is used as the fluorine compound layer C, as can be seen from FIG.
The long-wave radiation in the wavelength region of 13 μm is selectively and strongly radiated toward the sky, and as a result, the temperature of the substrate A and the other layers themselves can be lowered, and the long-wave radiation toward the indoor side can be reduced.

To explain this effect further, it is well known that the ground surface is cooled to several degrees lower than the temperature by radiative heat exchange with the low temperature atmosphere in the sky on a clear night and morning dew and frost form. This radiative cooling phenomenon has been used experientially, traditionally and very skillfully as a natural cooling method for avoiding daytime flame heat by utilizing the cold storage effect of the building body in arid urban construction in the Middle East countries.

However, the radiation wavelength distribution of atmospheric radiation has a so-called "atmospheric window" in which the amount of radiation is smaller than that of a black body at the same temperature at about 8 to 13 µm. For this reason, a cooling effect at a considerably low temperature can be obtained by utilizing the selective radiation surface at about 8 to 13 μm, which corresponds to the window of the atmosphere.

Although there is no data itself, an object having a large absorptance (that is, emissivity) at a window of 8 to 13 μm in the atmosphere and a small absorptance (that is, emissivity) at other wavelengths and having a large reflectance can be obtained.

In this way, the components absorbed by the substrate A can be reduced, and the radiant heat radiated by heating the plate itself into the room can be reduced.

〔effect〕

As described above, the solar radiation adjusting plate of the present invention is used for blind slats and window glass, and suppresses heat radiation toward the indoor side by the selective radiation characteristic to increase the solar radiation shielding effect.

Further, a durable layer can be formed on the outermost surface, whereby the strength is increased, and the scratch resistance, and the abrasion resistance, weather resistance, water resistance and chemical resistance are satisfied.

[Brief description of drawings]

FIG. 1 is an explanatory view of a solar radiation adjusting plate of the present invention, FIG. 2 is an explanatory view showing another embodiment of the same as above, FIG. 3 is a graph showing characteristics (transmittance) of a fluorine compound layer, FIG. FIG. 5 is an explanatory diagram for explaining the radiant energy balance of a black body. A ... Transparent substrate B ... Film layer made of flexible organic polymer solid C ... Fluorine compound layer D ... Metal or metal compound layer E ... Adhesive layer

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Bibliography Sho 61-7538 (JP, U) Shoko 55-33027 (JP, Y2) Handbook for Chemistry Mar. 20, 1964, Maruzen P. 1685

Claims (1)

[Scope of utility model registration request] 1. A transparent substrate A, a film layer B made of a flexible organic polymer solid, a fluorine compound layer C, a metal or metal compound layer D, and an adhesive layer E. On one side of the adhesive layer E- (film layer B-metal or metal compound layer D, or metal or metal compound layer D-
Film layer B) -fluorine compound layer C are laminated in this order, and only the fluorine compound layer C is formed on the other surface of the transparent substrate A, or the adhesive layer E- (film layer B or film B-metal or metal compound layer D, Alternatively, a solar radiation adjusting plate characterized by being laminated in the order of metal or metal compound layer D-film layer B) -fluorine compound layer C.