TW201244940A - Laminated sheet and solar cell using the same - Google Patents

Abstract

The present invention provides a polycarbonate sheet, which has excellently high moisture-heat resistance after long period. Furthermore, the present invention provides a high enduring solar cell, which uses the polycarbonate sheet. The laminated sheet has a layer (P1 layer) containing polycarbonate resin as main ingredient, and a layer (P2 layer) containing acrylic resin as main ingredient and the content of inorganic particles is greater than or equal to 1 mass% and less than or equal to 20 mass%. The laminated sheet is characterized by the ratio T1/T2 of the thickness T1 of P1 layer and the thickness T2 of P2 layer satisfying following formula (I). (Wa2+18)/9.5 ≤ T1/T2 (I)

Description

201244940 VI. Description of the invention: [Technical field to which the invention pertains] Mechanical properties, anti-purple wire: a laminated sheet. In particular, it relates to a polycarbon (tetra) layered layer = when used: a back sheet for a solar cell, and a solar cell back sheet or solar cell using the tantalum film. λ [Prior Art] In recent years, as a semi-permanent and pollution-free energy source, solar power generation, which is a green energy source, has attracted attention, and solar power has spread rapidly. The representative structure of the solar cell is as shown in Fig. 1, in which the solar cell is sealed with a transparent sealing device such as EVA (equivalent ethylene/ethylene acetate 8 copolymer), and the power generating element 3 is closed. The transparent substrate 4 such as glass is bonded to a resin sheet called a back sheet i. The sunlight is introduced into the solar cell through the transparent substrate 4. The sunlight introduced into the solar cell is absorbed by the power generating element 3, and the absorbed light energy is converted into electric energy. The converted electric energy is manipulated by a lead wire connected to the power generating element 3 (not shown), and is used for various electric machines. Here, the back sheet 1 means a sheet member which is disposed on the back side of the power generating element 3 and has no direct contact with the power generating element 3 with respect to the sun. There are various proposals for the system or the components of the solar cell. However, it is mainly a polyethylene-based or poly-g-based resin-based film (see Patent Documents 1 to 3). In view of the fact that the polycarbonate resin is excellent in mechanical properties, thermal properties, moisture resistance, heat resistance, transparency, and formability, it is widely used. -4- 201244940 is used in the automobile, especially because of the external line. For the polycarbon, in order to discuss the color-containing polycarbonity, the exterior materials such as the technical shed and the kanban, optical discs, and molding materials are used. The use of a suitable polyphthalate-based resin for a solar cell backsheet is used for the purpose of the outer length of the squatter. It is necessary to suppress the change of the change or the deterioration of the strength _ elongation. In this way, we have begun to study various kinds of properties to suppress the deterioration of the color tone or the elongation of the strength due to the purple color of the polycarbonate. For example, we have studied the technique of adding an inorganic fine particle to the resin (Patent Document 4). The UV resistance of the Tynan polycarbonate resin, we have also developed an acrylic resin laminate with a UV absorber in a transparent or white ISs layer (Patent Documents 5, 6, and 7), or to improve the adhesion of the PBT resin. A technique such as a layer (Patent Document 8). Patent Document Patent Document 1 Patent Document 2 Patent Document 3 Patent Document 4 Patent Document 5 Patent Document 6 Patent Document 7 Patent Document 8 [Summary of the Invention S This is an open-opening hjhom bulletin a special open flat bulletin 曰本特开 2006- Japanese Patent Publication No. 270025, No. 2007-191499, JP-A-2006-343445, 曰本特开平1 1 -58627号 曰本特开平11 - 3 3 4 0 17号 曰本特开2009- Japanese Patent Publication No. 141345 [The problem to be solved by the invention] However, the previous polycarbonate is thin. [The ultraviolet light resistance required for providing a solar battery back sheet is difficult. 201244940 Therefore, the subject of the present invention is to provide a solar cell back:: vinegar-based sheet, external linearity (strength_extension 2 mechanical characteristics, and anti-purple [solution to the subject] color change) Suppress) excellent. In the above problem, the present invention adopts the following constitution. In other words, 'there is a layer in which a polycarbonate s-based resin is mainly composed of 4 (P1 layer)' and a C-based resin is used as a main constituent component, and the inorganic fine particles contain _- of i mass% or more. The layered sheet of the layer (P2 layer), the ratio T1/T2 of the layer thickness T2 of the layer thickness TU P2 of the layer P1 of the P1 layer satisfies the following formula (I). (Wa2+ 18)/9.5^ T1/T2 (I) [Effect of the Invention] According to the present invention, it is possible to provide a polycarbonate resin sheet which is excellent in ultraviolet resistance as compared with the conventional polycarbonate resin sheet. In addition to the backsheet for a solar cell, the polycarbonate resin sheet is suitable for use in a liquid crystal display reflector, an automobile material, or a building material, and is excellent in moisture resistance and resistance to ultraviolet rays. use. In particular, by using such polycarbonate-based resin sheets, a solar battery back sheet having high durability and a solar battery using the same can be provided. [Embodiment] A laminated sheet having a layer containing a polycarbonate resin as a main component (a layer of ruthenium) and an acrylic resin as a main component, and having an inorganic fine particle content Wa2 of 1% by mass or more and 20% Layer of the layer below the mass% (P2 layer), -6- 201244940 where the layer thickness of the pi layer is! The layer thickness of the layer is 2 T1/T2, which satisfies the following formula (j). Ratio (Wa2+ 18) / 9.5 ^ T1/T2 (I) / by fully satisfying the above requirements ', a laminated sheet comprising a polycarboester oxime resin which is suitable for use in Taiyue The battery is a mechanical property for use in a board or the like, and has a long-term resistance to moist heat and ultraviolet rays. In addition, the main component: the component referred to herein means that in the P1 layer, the resin component of the constituent layer has a mass ratio of 6 以上 or more of polycarbonate resin, and more preferably 7% by mass or more. - The step is preferably 8. More than % by mass... will be polycarbonate. When the resin is used as the main constituent layer, the layer having two or more layers is rich in the difference of 8% or less, and the same layer (the value is adjacent to: ±, the relative concentration of the standard). Here, in the case where there are two or more layers of the particles having a concentration of 3: the layer having the smallest particle concentration is referred to as the p 1 layer. Further, in the P2 layer, the resin component of the constituent layer is 6 〇 or more by mass: a dilute acid resin, more preferably 70% by mass or more, and further. Good for 8〇 quality% or more. In the case where the layer containing the acrylic resin as the main constituent component has a layer of -layer or more, the concentration difference of ±8% or less is regarded as the same layer. Here, if the concentration of the particles having two or more layers is different, the layer having the highest concentration of the particles is regarded as the p 2 layer. The step-by-step is preferably exemplified by the fact that the laminated sheet of the present invention is formed into a two-layer structure including (1) P1 layer/P2 layer and (u) as described later. 1 layer/P2 layer/.../P2 layer multi-layer laminate structure, layer/P2 layer/pot layer, (W) other layer/P1 layer/?2 layer, P1 layer/other layer/p2 layer, etc. The invention of the laminate? In the first layer and the P2 layer, the original layer of 201244940 is made into the P i layer from the surface side, and the first layer is formed into the p2 layer from the other surface side (hereinafter, the structure of 'Shai and the like is called an asymmetric structure. Further, in the case where the other layer is composed of a plurality of layers, it is possible to form a laminated sheet excellent in curl resistance: the reason for this will be described in detail below. Usually, in order to increase the functionality of the polycarbonate resin, or to add inorganic fine particles to the polycarbonate resin, in this case, a method of preparing a masterbatch containing a high concentration of fine particles once and then diluting it is used. However, since the heat treatment is carried out during the production of the master batch, the polycarbonate is degraded, and the inorganic fine particles have adsorbed water. Therefore, the polycarbonate resin containing inorganic fine particles can promote the hydrolysis reaction. In combination with the results of the two phenomena, the heat and humidity resistance is lowered. Further, the polycarbonate resin was originally liable to yellowing when it was delivered to the purple buds. 4 Even if the particles were whitened, it could not be suppressed at all. In the layered sheet of the present invention, the acrylic resin is used as a main component of Φ亜m Λ, upper and a Θ in the Ρ2 layer, and the inorganic fine particle content is i% by mass or more and 2% by mass or less. Ρ2 layer" can impart properties (for example, light reflectivity and whiteness) in response to the type of inorganic fine particles: in terms of product, the acrylic resin layer containing the inorganic fine particles is apt to be easily broken, but by making the ρ layer The ratio of the layer thickness ^ to the layer thickness T2 of the P2 layer is 1/?2, which satisfies the following formula (1), and can provide mechanical properties applicable to solar battery back sheets, etc. (Wa2+ 18)/9.5^ Tl/T2 ( l) For the purpose of the present invention, for example, the following is a detailed description. 2. The polycarbonate of the main constituent of the layer of the layered layer of the layered layer::: knowing means the dihydroxydiaryl compound and phosgene, or A polymer obtained by reacting a carbonate of a second stupid base anti-I ester, etc. -8 - 201244940 In the case of the laminate of the present invention, an example of a di-diaryl compound used for a polycarbonate resin is exemplified. Take 2, 2 pairs (4_ phenyl) propane (known as double hope A), double ( Stupid base), U1-double (4_ benzene'-yl) ethane, 2,2-bis(4-carboxyphenyl) butyl, 2,2 bis (4-phenyl) octyl , double... phenyl) phenyl ketone, 2,2-bis(4-hydroxyphenyl-3-methylphenyl)propane, 1,1-bis(4-terido-3-butylbenzene) Base) propane, 2,2_double (4_ via_3 lyophilyl) propyl, 2,2-bis (4_ _3u odor phenyl) propane, 2,2 bis (cardiohydroxy-3) a bis(hydroxyaryl)alkane compound such as 5-diphenylphenylpropane; 1 bis(4-phenylene)cyclopentane, ^-bis(4-phenylene)cyclohexanthes, etc. a bis(penta)aryl)cycloalkyl compound, a dihydroxydiaryl ether compound such as 4, _di-diphenyl, 4,4, di-mercapto-3,3-didecyldiphenyl ether; a dihydroxydiaryl sulfide compound such as 4,-dihydroxydiphenyl sulfide; 4,4'-dihydroxydiphenyl sulfoxide, 4,4'-dihydroxy-3,3,-dimethyldi a dihydroxydiaryl sulfoxide compound such as benzodiazepine; 4,4,-dihydroxydiphenyl sulfone, 4,4,-di-based-3'3'-dimethyldiphenyl The aryl stone-based compound or the like is exemplified, but is not limited thereto. Further, these may be used alone, depending on Further, in the polycarbonate-based resin of the present invention, a compound having three or more phenolic hydroxyl groups may be used in addition to the above-mentioned dihydroxydiaryl compound. Examples thereof include radix trisphenol. (phloroglucin), 4,6-dimethyl-2 4 6-= (4-phenylene)-glycol, 2,4,6-dimercapto-2,4,6_tri-(4_^benzene Base)_: calcined, 1,3,5-tris-(4-phenyl)-benzene, U-san--(4-phenylene)-b-butyl and 2,2-bis[4,4-(4) '4,. di-diphenyl) _cyclohexyl] _ propyl burning and the like. Here, in the laminated sheet of the present invention, the polycarbonate resin which is a main constituent component of the P1 layer is made of 2,2-double as a di-diaryl compound as 201244940 from the viewpoint of heat resistance and moist heat resistance. A polycarbonate-based resin in which (4-pyro-based)-propane-burning (commonly referred to as "double-looking A") is a main component is preferable. In addition, the main component herein means a total dihydroxydiarylated a used in a polycarbonate resin, preferably 8 〇 mol% or more, more preferably 9 〇 mol% or more. More preferably, it is 95% or more. Further? The polycarbonate-based resin which is a main constituent of the first layer is a 2,2-bis(4-hydroxyphenyl)-propyl compound which is a dihydroxydiaryl compound from the viewpoint of further improving heat resistance and moist heat resistance. A polycarbonate resin which is generally referred to as A) as a main component is more preferable. In the laminated sheet of the present invention, the molecular weight of the polycarbonate resin is preferably a number average molecular weight (Mn) of 10 Å or more and 50,000 or less. More preferably, it is 12,000 or more and 40,000 or less, and more preferably ι5〇〇〇 or more and 3 or less. In the laminated sheet of the present invention, the glass transition temperature Tg of the polycarbonate resin is high in resistance to moist heat or heat, and in the case of using the solar battery back sheet, the power generation battery pack and the sealing material are used. The viewpoint of the form retention of the sealing step of the laminate sheet in the step of closing is preferred.

The measurement of Tg was carried out in accordance with JIS K7 122 (1 987) at a temperature increase rate of 20 ° C /min, and the temperature of the resin was raised from 25 ° C to 300 ° C (IstRUN), and held in this state for 5 minutes. Then, it was quenched to 25 ° C or lower, and the temperature was raised again to 300 at room temperature at a temperature increase rate of 20 ° C /min. 〇, the 2ndRUN differential scanning calorimetry chart, the change in the step shape of the glass transition is described in US K7 121 (1987) "9.3 Glass transition temperature method (1) Intermediate point glass transition temperature Tmg" The method is obtained. 201244940 Glass transition temperature Tg, preferably 125. (The above is more preferably 130 ° C or more, and still more preferably 135. (: Above, particularly preferably 14 〇 < t or more. Further, the laminated sheet of the present invention is an acrylic resin which is a main component of the P2 layer. By propylene group, fluorenyl fluorenyl group [hereinafter, propylene fluorenyl group and methacryl fluorenyl group are collectively referred to as (meth) acryl fluorenyl group. For (mercapto) acrylic acid, (methyl a polymer obtained by polymerizing a compound having the same performance as an acrylate or the like. In the laminate of the present invention, as an example of a compound having a (meth) propyl group based on an acrylic resin, The monofunctional compound may, for example, be methyl (meth)acrylate, ethyl (meth)acrylate, butyl (meth)acrylate, hexyl (meth)acrylate or lauryl (meth)acrylate. (meth)acrylic acid alkyl esters such as stearyl acrylate, isodecyl acrylate, etc.; 2-hydroxyethyl (meth) acrylate, polyethylene glycol mono (meth) acrylate, Hydroxypropyl (meth) acrylate, polypropylene glycol mono (meth) propylene Acid ester, 2-hydroxybutyl (meth)acrylate, 4-hydroxybutyl acrylate, decyl α-(hydroxydecyl) acrylate, ethyl α-(hydroxyindenyl) acrylate, n-butyl α-( Hydroxymercapto) acrylate, bis(2-hydroxy)isocyanate diacrylate, 2-hydroxy-3-phenoxypropyl (meth)acrylate, 2-(methyl) propylene oxirane 2-2-hydroxyethyl phthalic acid monoglyceryl acrylate, etc. An acrylate having a carboxylic acid group such as a methoxyethyl-capric acid or a 2-(indenyl) propylene oxyethyl hexahydrophthalic acid; a phenyl (meth) acrylate or a phenyl cyanoacrylate Alkyl-terminated polyalkylene glycol mono(mercapto) acrylates such as esters, nonylphenoxy polyethylene glycol (meth) acrylates, etc.; hydrazine, hydrazine-dimethylaminopropyl (fluorenyl) ) acrylamide, acryl oxime 201294440. (meth) acrylamide such as forest, N-isopropyl (meth) acrylamide, etc., one (meth) acryl oxime in one molecule For example, However, these may be used singly, and it is also possible to use a plurality of kinds as needed. Further, the acrylic resin of the present invention may be used in addition to the above compound having a (fluorenyl) acryl-based group. A compound having a functional group or more. As an example thereof, exemplified by (2-hydroxyl)isomeric cyanurate diacrylate, propylene oxyglycerol monodecyl acrylate, glyceryl dimethacrylate, 1, 6-Hexanediol di(meth)acrylate, polypropylene glycol bis(indenyl)acrylic acid, trimethylacetate neopentyl glycol bis(indenyl)acrylate, 2,2 '-bis (4- (Meth) propylene oxime ethoxy phenyl) propane, 2,2,-bis(4-(methyl) propylene fluorenyl oxypropyl oxy) propylene, dicyclopentane bis (meth) acrylate Ester, phenyl epoxidized ether acrylate methyl benzene diisocyanate vinegar, divinyl adipate, etc., other compounds having two (meth) acrylonitrile groups in one molecule; neopentaerythritol three ( Mercapto) acrylate trimethylolpropane tri(meth) acrylate, trimethylolethane tris(曱Acetate 'shen [(indenyl) acryloyloxyethyl] isocyanate, other compounds having 3 (fluorenyl) acrylonitrile groups in one molecule; neodecyl alcohol tetrakis(meth) acrylate, glycerol (meth) acrylate hexamethylene diisocyanate, another compound having 4 (fluorenyl) acrylonitrile groups in one molecule; pentafunctional compound pentaerythritol monohydroxy penta(meth) acrylate, other a compound having five (meth) acrylonitrile groups in one molecule; a hexafunctional compound is dipentaerythritol hexa(meth) acrylate, and a compound having six (fluorenyl) acryl fluorenyl groups in one molecule; . -12- 201244940 A suspected _ / laminated film in this month, is the main component of the P2 layer = dilute acid resin, from the viewpoint of heat resistance or extrusion, as a .. τ methyl group Acrylate is preferred as the main component. In addition, the main component of the 眇 句 ^ ^ ^ ^ ts refers to all of the compounds used in the 夂 夂 夂 resin and has ( 〇 0 ^ ^ 0 / 丨, in the compound with (meth) acryl oxime 8 〇 耳 〇 〇 、 、 、 、 、 、 具 具 具 具 具 具 具 具 具 具 具 具 具 具 具 具 具 具 具 具 具 具 具 具 具 具 具 具 具 具 具 具 具 具 具 具 具 具 具 具 具 具 具 具. The propylene & eucalyptus sapphire of the composition, from the point of view of formability or buildup, at a temperature of 25 (TC, cut off 厗 1 ΠΛ 成 成 性 4 4 3 3 3 3 3 3 3 3 3 3 3 3 3 1 0 The following is better. It is better, and it is more than 5000' poise and more than 20,000 poise. In the layer of the electric layer, the second layer contains the right pole system. For the purpose of imparting the necessary functions to the microparticles to be used properly, it is possible to exemplify the inorganic particles of X 了 忐 amp 胁 胁 / / / / 系 系 / / / 系 或 或 或 或 或Resin-like particles, pigments, etc., which have optical properties such as conductive reflectivity and whiteness, ultraviolet light or light granules...projected The conversion is equal to the diameter of the microcircus conversion diame (叩(五)咖•) The primary particle size (primarv partlcle diameter) is 5nm or more' (primary description, in the present invention, the particle size of the Shanghai 'X, as long as there is no special The meaning of the granules. The knives of the granules of the granules are as follows: Iron, zinc, in, bismuth, chromium, vanadium, iron, recorded 1 Lu Xi, #, &, Μ, 201244940 ^ 镧 4 metal; zinc oxide, titanium oxide, oxidized ruthenium oxide, tin oxide, from Tin oxide cerium oxide, cerium oxide, cerium oxide: metal oxides such as aluminum oxide and cerium oxide; metal fluorides such as lithium fluoride, magnesium fluoride, aluminum oxide, cryolite, etc.; Salt; carbonated boat I. β. ^ » sulphate; sulfate-specific sulfate; talc, kaolin, etc. In the present invention 'in view of the high frequency of use outside the house' has ultraviolet absorption energy m, for example, oxidation in inorganic particles Titanium, oxidized, yttrium oxide, etc. In the case of the compound, it is possible to flexibly use the ultraviolet rays caused by the particles, the long-term gates 4*, the 'ten, d gates, and the mechanical strength, and the effect of the present invention is significantly improved, from the viewpoint of providing high reflection characteristics. It is preferable to use oxytitanium as the inorganic fine particles, and it is preferable to use rutile-type titanium oxide from the viewpoint that the ultraviolet ray resistance is higher. The fine screen used in the present invention ^ ^ ^ ^ The projected average conversion of the inorganic particles of the laminated sheets is preferably 1 Onm or more and 3 μηι or less, and particularly preferably 15 nm or more and 2 μηη or less. In the laminated layer κ 2 layer of the present invention, the inorganic fine particle content rate Wa2 is 1 mass: !: % or more. w Ding ^, 曰 下. More preferably, it is 3% by mass or more and 1 § is less than or equal to 20% by mass, and further preferably A% is preferably 4% by weight or more than 12% by mass or less. In the case where the inorganic microparticle content rate Wa? I t α is less than 1% by mass, the 'unable to charge', the effect 'especially in the case of particles having ultraviolet absorption energy is not sufficient, and there is a long-term use. Mechanical strength - in the case of cracking. Further, the inorganic fine particle content rate Wa2 is more than 20% by mass. / 〇 〇 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , In the +3⁄4 bar layer of the present invention, by making the p2 layer free of -14-201244940, the particle content rate Wa2 is 1 day. , π dry dZ load 1 quality more than 20%. /. In the following, the mechanical properties of the sheet can be maintained while the effect of adding particles is exhibited. In the laminate of this month, it is preferred to contain inorganic particles in the layer. By adding inorganic fine particles to Ρ1 &, it is possible to further increase the effect of adding fine particles. The inorganic fine particles as used herein mean the same as the inorganic fine particles contained in the above two layers. In this case, the inorganic fine particle content rate of P1 is preferably from 0.1% by mass to 15% by mass. Better for i quality. /〇 The above 10% by mass or less is more preferably 3% by mass or more and 8% by mass or less. When the inorganic fine particle content Wal of the P1 layer exceeds 5% by mass, there is a possibility that the moist heat resistance is lowered. Further, in the laminated sheet of the present invention, when the inorganic fine particles are contained in the P1 layer, the ratio of the inorganic fine particle content Wal of the p 1 layer to the inorganic fine particle content ratio Wa2 of the P2 layer is Wal/Wa2, and 〇8 or less is 〇8 or less. good. More preferably, it is 0 or more and 0.7 or less, and further preferably 〇 or more and 5 or less. When it exceeds 0.8, Wal becomes too large, and there is a case where the resistance to moist heat is lowered. In the laminated sheet of the present invention, when the ratio of the inorganic fine particle content Wa2 of the P1 layer to the inorganic fine particle content Wa2 of the P2 layer, Wal/Wa2, is 0.8 or more, the moisture resistance is not lowered, and it can be contained. The effect caused by the particles appears to be the maximum. In the laminated sheet of the present invention, it is preferable that the average wavelength of the fine particles of the P 1 layer and the P 2 layer is 3% by mass or more. Here, the average Wave of the particle content ratio of the p 1 layer and the P 2 layer means a value obtained by the following formula (1). The average particle content of the inorganic particles is Wave = (Wal χτί + Wa2 T2) / (T1 + T2) (1) Χ 201244940 where T1 is the layer thickness of the P1 layer (^), and D2 is the layer thickness of the p2 layer (μηι ). a The average Wave content of the P1 layer and the P2 layer is more preferably the amount of $f. /. It is preferably 10% by mass or more in terms of >. In the laminate of the present invention, when the inorganic fine particle ratio Wave of the entire film is set to 3% by mass or more, the inorganic fine particles are contained as the entire effect of the P1 layer and the P2 layer, and the ultraviolet ray resistance can be made higher, for example. In the case where titanium oxide or the like is used as the inorganic fine particles, the light reflection characteristics of the laminated sheet can be improved. In the laminated sheet of the present invention, it is preferable to contain an elastic component from the viewpoint of making the mechanical properties of the P2 layer higher. In this case, the content Wb2 of the elastic component is preferably 5% by mass or more and 5% by mass or less based on the P2 layer. More preferably, it is 10 mass% or more and 40 mass% or less, and further preferably 12 mass% and 1 mass. /. Hereinafter, it is particularly preferably 15% by mass or more and 25% by mass or less. In the case of the elastic component, in addition to the elastic particulate component such as an acrylate compound or a polyoxyacid compound, a polyester resin, a polyolefin resin, a polyamide resin, or a poly Thermoplastics such as an imide resin, a polyether resin, a polyacetamide resin, a polyether butter, a propylene (tetra) resin, a polyamine-based resin, a polycarbonate resin, and a polyvinyl chloride resin. Resin. Further, in the layer of the layered sheet of the present invention, the layer may be blended with other additives in the range which does not impair the effect of the present invention (for example, heat stabilizer, ultraviolet absorber, and weather resistance) Stabilizer, organic smoothing agent (I-), pigments, dyes, fillers, nucleating agents, etc., wherein 'the so-called inorganic fine particles of the present invention are not meant to be referred to herein.) For example, 'selecting ultraviolet absorbers as additives In the case of the 201244940 shape, the UV resistance of the film of the present day (fourth) can be further improved. For example, for example, a polycarbonate-based resin or an organic ultraviolet absorber which is miscible with an acrylic resin, Examples thereof include ultraviolet absorbers such as oxalic acid, benzophenone, benzodiazole, diterpene, and cyanoacrylate, and ultraviolet absorbers such as hindered amines. Specifically, for example, water yang can be exemplified. Acidic salicylic acid p-tertiary butyl stupid, salicylic acid p-octylbenzene, diphenyl fluorene 2,4 di benzophenone, 2-pyridyl 4-methoxy Benzophenone, 2-hydroxy-4-methoxy-5-sulfonic acid, mei-poor ' 驮 ― ketone, 2, 2 , 4,4'-tetrahydroxybenzophenone, bis(2-methoxy-4-facet-4-yl-5-nonylphenyl) decane, benzotriazole 2-(2,- Benzyl-5,-▼-phenylphenyl)benzotriazine, 2_(2,_transyl-5-phenyl)benzotriazole, 2 2, _ ώ 双 [4-(1,1, 3,3-tetradecylbutyl)-6-, benzotriene. Sit. _2_base), and 3) (4,6-diphenyl- _:)5[(hexyl)oxy ]-Phenol, cyanoacrylate type ethyl-2-cyanide-3,3'-diphenyl propylene acid furnace, . Qiu suction ^), bismuth amine series double (2,2,6,6_ Tetramethyl as a base, a fixed base, azelaic acid, a succinic acid, and an ethyl 4-hydroxytetramethylpiperidine polycondensate. Other examples are 2_(4,6_diphenyl) -1,3,5-triyl)-5-[(hexyl)oxy]-phenol, bis(octylphenyl)-3,5,--stage τ which is clawed nickel, and 2,4-di - a tertiary butyl benzene, a primary butyl ketone, a benzic acid saponin, etc. The laminated sheet of the present invention is a P1 layer ▲ P2 3 laminated structure of the above requirements, which contains a composition 2 which satisfies the P2 layer on the surface side: Preferably, the outermost layer on at least one side thereof is a P2 layer, preferably at least one P1 ^ of the laminated sheet. Further, it is preferable that the other outermost layer is a stacking layer which is formed by the η layer and the layered layer of the sealing material, which is formed by a side surface of the member, and 201244940 The P2 layer is formed as a layer on the opposite side to the surface of the layer, and the layer can be imparted with resistance to the laminated sheet, the grade of the layer, the level of 34, the film, the film, and the like. The column has a higher effect from the tanzan effect and (in the case of bonding with other members) the total thickness of the laminated sheet of the present invention is better. Hereinafter, the step is preferably 2. , above 45~ below, the best on: above 400μηι. Preferably, the laminated sheet of the present invention is used in the use of a solar cell back sheet, and the thick sheet is suitably adjusted in the above range in accordance with the back sheet. And the voltage, in the order. In the case of the laminate g 1 Ομιη of the present invention, the degree of sheeting is less than that which is lowered to make the layer containing micro or ruthenium too thin. In the case of a thicker case, for example, the use of as a ": dimorph" will cause the entire thickness of the solar cell battery pack to become too thick. In the sounding sheet of the present invention, the layer thickness of the gland pija ^ P2 layer is set to 曰Τ2 Γ η θ The layer thickness is set to Tl ((4), and the following formula (1). '", (4), the ratio of the two Τ 1 / Τ 2 is necessary to be full (Wa2+ 18) / 9.5 ^ T1/T2 (I) better Ti / T2 It is 3 or more, and more preferably * or more. In addition, when the pi 曰 and/or P2 layer is a plurality of layers, the layer thickness of the layer is π, Ρ 2 ^ °, and the layer thickness of P1 TUP2 is 2 Μ Μ 1 If the layer thickness of the layer is rounded off, the right a η ratio m does not satisfy the above formula (1), and the mechanical properties of the tile are lowered, which is liable to be broken. Further, in the case where the laminate # ρ of the present invention is excessively large, at: i:: In the case of the composition of the sheet, the curling property is changed. In addition, the upper limit of the applicable mechanical limit is not particularly limited, but for example, 201244940, when the film is formed by the co-extrusion method, the sword glare helmet ^ ^ From the viewpoint of good ultraviolet light resistance or photon characteristics, it is preferably from 1/72 to 3 Torr, more preferably 20 or less, and particularly preferably 15 or less. In the laminated sheet of the present invention, the layer thickness Τ2 of the Ρ2 layer is more than Η(4) or more, more preferably 5 or more, and more preferably 7 μmη or more, particularly preferably 1 〇 层 layer layer thickness Τ2Μ3·5μιη, then inorganic particles In the laminated sheet of the present invention, by adding the layer thickness Τ2 of the layer to 3.5 μm or more, the effect of adding the particles can be increased. Further, the layer thickness of the layer 2 is 2 The upper limit, and the special limit 'is such that Τ1/Τ2 is set in the range satisfying the above formula (1), the mechanical properties of the thin layer become good 'and the laminated sheet is made asymmetric, and the curl can be suppressed. Further, the laminated sheet of the present invention is preferably an elongation at break as measured according to ASTM D882 97 (refer to the ASTM Standard Yearbook of the 1999 edition), more preferably 5 G% or more, and more preferably Μ. % or more. By providing such a range, the laminated sheet can be suitably used for a solar electric (four) plate, etc. Further, the laminated sheet of the present invention is in an environment of a temperature of 125t and a humidity of i〇〇%rh, and 48. +Elongation retention rate after treatment (ei()ngati() n 咖 Won) is preferably 20% or more. More preferably & 3 % or more, more preferably 4% by weight or more, and particularly preferably 5 % by weight or more. Here, the elongation retention ratio is based on astm-D882_97 (refer to In the case of the 999 (5) gamma standard yearbook, the elongation at break of the laminated sheet before the treatment is set to be different, and the elongation at break after the treatment is set to E, which is obtained according to the following formula (7). -19- 201244940 Elongation retention ratio (%) = (Ε/ΕΟ)χ1〇〇 (2) In addition, during the measurement, the sample is cut into the shape of the measurement piece, and then the test is performed. kind. By setting it in such a range, the moisture resistance of the laminated sheet can be further improved, and the heat resistance of the solar cell using the laminated sheet of the present invention can be improved. Further, the laminated sheet of the present invention is subjected to a metal halide lamp having a strength of 100 mW/cm 2 (wavelength range: 295 to 450 nm, peak wavelength: 365 nm) at a temperature of 60 ° C and 50% R Η for 48 hours. The elongation retention after the irradiation treatment is preferably 25% or more. More preferably, it is 3 5 or more, and more preferably 3 7 or more is particularly preferably 40% or more. Further, in the case where the laminated sheet of the present invention is irradiated with the metal halide lamp, the ρ2 layer side of the laminated sheet of the present invention is exposed. Further, at the time of measurement, the sample was cut out into the shape of the measurement piece, and then the sample after the measurement measurement process was carried out. By setting such a range ', the ultraviolet resistance of the sheet can be made good. The laminate of the present invention is at a temperature of 125. In the environment of 〇 and humidity of 1〇〇%RH, the elongation retention after 48 hours of treatment is 2% or more, and in the environment of temperature 60°C and 50% RH, the strength is 1〇〇mW/cm2. The metal il lamp (wavelength range: 295 to 45 〇 nm, peak wavelength: 3 65 nm) is preferably 25% or more after the irradiation treatment for 48 hours. The laminate sheet which can coexist in the range can be used as a solar battery back sheet, and can be used as a solar battery back sheet, because it can be excellent in moisture resistance and ultraviolet resistance with respect to 帛#,0 containing the conventional polycarbonate. It is also possible to maintain mechanical strength over a long period of time. Further, the laminated sheet of the present invention can be laminated with other films and the like. In the case of the other four films, the polyester layer for improving the mechanical strength, the antistatic layer of the antistatic layer '-20-201244940 and other materials, and the ultraviolet layer for the adhesion of the other materials are used to further improve the ultraviolet resistance and impart flame retardancy. The flame retardant layer, the hard coating for improving the impact resistance or the rubbing resistance, and the like, can be arbitrarily selected according to the application. /, specific examples, detectable and ^ ^ υ · 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Into the power generation component ^ ^ m) 〕 sealing material (such as the extension of ethyl acetate - the adhesion of the easy to save _ sk., about the layer, anti-UV layer, flame retardant layer, in addition to forming conductive The layer 箄, 甘 a, 4 备 ^ 其 其 其 其 其 其 其 其 其 其 其 其 其 其 其 其 其 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 The polycarbonate resin which is a main constituent component of the first layer is obtained by reacting a dihydroxydiaryl compound with phosgene or carbonic acid such as diphenyl carbonate or the like by a known method. "TARFL〇N" manufactured by Idemitsu Kosan Co., Ltd., "Panlite" manufactured by Teijin Chemicals Co., Ltd., "Novarex" manufactured by Mitsubishi Engineering Plastics Co., Ltd., and "Calibre" manufactured by Sumitomo Dow Co., Ltd. are commercially available. Polycarbonate resin. Also' The acrylic resin which is a main component of the P2 layer is obtained by having an acrylonitrile group or a mercapto propylene group [hereinafter, the acryl fluorenyl group and the methacryl fluorenyl group are collectively referred to as a (meth) acrylonitrile group. A compound obtained by polymerizing a thiol acid or a (meth)acrylic acid vinegar or the like can be obtained by polymerization. Further, a component which improves flexibility such as rubber can be added during polymerization or after polymerization. Any method can be used as a method of compounding. Also, it can be used as appropriate. Sumitomo Chemical Co., Ltd.-2 1- 201244940

Sunupex, Kuraray Co., Ltd. "p (four) pd", Mitsubishi Rayon Co., Ltd. plastic "a,, shaken t 1 Acrypet and other commercially available acrylic resin. + In the laminated sheet of the present invention, the laminated layer of p1 layer and p2 layer For the method 5', for example, 4"1 layer raw material and P2 layer raw material are respectively cast into two extruders to be melted, and the casting drum cooled from the bayonet is pressed into a sheet shape. Method (co-extrusion method); in a thin film made of a single film, the coated material is poured into an extruder, and the smelting and squeezing is carried out, and the self-carding, the gas, the gas, the gas, the gas, the gas, the gas Combined method (melting layer method); each individual film is produced, and is heat-compressed by a heated roller group or the like (th (four). Coffee--(4)) method (thermal layering); bonding via a carrier The method (subsequent method); the other method of coating the solvent in the solvent, the method of drying (coating method), the method of combining the methods, etc. The viewpoint of good adhesion between layers is the co-extrusion method. The method of the method. In the case where the inorganic fine particles are added to the polycarbonate resin of A P1 ^, the polycarbonate resin and the inorganic fine particles are previously subjected to a vented two-axis kneading extruder or a tandem ( Tandem) type extruder, 乜σ method is preferred. Here, it is made to contain inorganic micro-because of the thermal process, so that many polycarbonates are degraded. Because of the k-heating property 'It is preferable to prepare a high-concentration masterbatch with a large amount of inorganic fine particles added to the inorganic fine particles contained in the ρ layer, and mix and dilute it with the poly:S: 糸 糸 resin to make the inorganic particles of the prescribed ρ layer -22- 201244940, when the concentration of the high-concentration masterbatch is preferably 2〇% by mass or more and 8 lbs, and then more than 25% by mass. 70 眚 is 30 皙 《 ν 量 ° / 〇The following, the best horses in the capital / 〇 above 60% by mass, the best A " ι ^ 曰 60 皙 0 0 /,,, 幵 good is 40% by mass or more (four). ^Under. In less than 2 〇 quality. /. In the case where the amount of the masterbatch added to the P1 screen is increased, the deterioration of the ρ 吾 铁 铁 铁 峨 及 及 及 及 及 及 及 及 及 及 及 及 及 及 及 及 及 及 及 及 及 及 及 及 及 及 及 及 及 及Further, in the case where the master batch is difficult to be formed, it is difficult to uniformly mix the master batch in the case of the polycarbonate: eucalyptus. Further, in the case where the acrylic resin constituting the ruthenium layer 2 is added with no io particles, the method preferably uses an acrylic resin and inorganic fine particles in advance, and a ventilated two-axis kneading extruder or a tandem type extruder. A method of performing melt kneading. Here, when the inorganic fine particles are contained, they are subjected to a heat process, so that many acrylic resins are deteriorated. Therefore, it is preferable to produce a high-concentration masterbatch having a larger amount of inorganic fine particles than the inorganic fine particles contained in the p 2 layer, and to mix and dilute it with the acrylic resin. The content of the inorganic fine particles in the predetermined P2 layer is set. The concentration of the cerium concentration masterbatch is preferably 2 〇 mass% or more and 8 〇 mass /. or less, more preferably 2 5 mass % or more and 7 〇 mass. The following is more preferably 30% by mass or more and 6% by mass or less, and particularly preferably 4% by mass or more and 60% by mass or less. In the case of less than 2% by mass, the amount of the master batch added to the p2 layer is increased. As a result, in the case of the deteriorated acrylic resin in the P2 layer, there is a case where the mechanical strength of the P2 layer is lowered. In the case of more than 80% by mass, the masterbatch becomes difficult, or the master batch is mixed. In the case of an acrylic resin, it is difficult to uniformly mix the objects. -23- 201244940 Next, in the case where the laminated sheets of the present invention are formed by a co-extrusion method, first, the mixture is mixed and contained. P1 layer of the masterbatch of the granules After drying the composition of the inorganic microlayer, it is supplied to a press machine which is heated to 24 〇t or more and 3 〇〇<>c or less to the following 25 liters under the pressure of nitrogen gas. In addition, it will be mixed: The p2 layer containing the acrylic resin raw material and the inorganic fine particle masterbatch is used: After the materials are dried, they are supplied under the nitrogen flow or under reduced pressure, and are added to the '7 〇t or less. More preferably (10) or more and 25 吖; ! He smelts the machine and smelts it. Then, using the multi-manifold die or feed sleeve or static mixer, composite device (Pinol), etc., the P1 layer and the 屛 流, layering, self-casting and co-casting. The laminated sheet discharged from the mold by the method described above is pressed, cooled and solidified on a cooling body such as a binding drum, whereby the present invention can be obtained: a laminated sheet. At this time, from the viewpoint of the planarity of the obtained sheet, the temperature of the cooling body at the time of cooling in the first stage is set to be a glass transition of the acrylic resin of a hungry or higher: temperature - HTC or less is preferable. Further, in this case, it is preferable to use a wire 35 such as a metal wire, a belt, a needle, or a 77, and it is preferable to use a power splicing_plastic drum κ heat sink. The laminated sheet of the present invention obtained by the method 4 can be subjected to a processing such as heat treatment as needed without impairing the effects of the present invention. Further, in terms of the upper limit of the heat treatment temperature, the glass transition temperature of the acrylic resin is preferably 〇c>c or less, more preferably the glass transition temperature, and more preferably the glass transition. The temperature is not more than 3 〇t. Further, the heat treatment time is 5 seconds or more and 3 minutes or less. The heat dimensional stability of the laminated sheet of the present invention can be improved by heat treatment. The bonding method of -24-201244940 and the resin are different. Extrusion of single-film pressure, from individual methods, hesitation, and group, in order to improve the performance of the above method, corona treatment, electropolymerization treatment can also be carried out. Layered sheets of laminated sheets are laminated with other films. =, for example, in the case where the 穑 々 々 is the main constituent material: the thermoplastic material extruder will be fused, self-carding!: The same materials are put into each other::: processed into flaky Method (The co-extrusion method is used to put the sheet into the coating layer for inspection, and the shield is used in the extruder to perform melt extrusion: a method of laminating on one side of the extrusion (melting layer method); each film is produced ,wrong The heated roll group or the like is subjected to thermocompression bonding (thermal lamination); a method of bonding by means of an adhesive (the method of coating and drying the method in which the method is applied to the solvent) (the method of coating the method, etc.). The laminated sheet of the present invention can be 'manufactured by the aforementioned method. The obtained layer sheet is thinner than the previous polycarbonate thin resin, UV resistance, optical characteristics (light reflectivity &&&& It is excellent for the anti-moisture heat of the liquid crystal display, including the reflector for the liquid crystal display, the automotive materials, and the building materials. For the purpose of ultraviolet resistance and light reflectivity, it can be suitably used. In particular, by using such a laminated sheet, a solar cell having a high durability and a solar cell using the same can be provided. It is characterized in that the laminated sheet of the present invention is used as a moon plate. By using the laminated sheet of the present invention, durability and thinning can be improved as compared with the prior solar battery. As shown in the figure, a transparent substrate 4 such as glass is placed on a transparent sealing layer of an EVA-based resin such as a lead wire for connecting power drawn (not shown in Fig. 1) -25-201244940 The product of the present invention; the film is used as a back sheet for a solar cell, but it can be used for any configuration. In addition, in the first figure, it is shown in the present invention. The example of the body 'but the other is considered necessary, can also use the laminated sheet of the present invention and the characteristics of the composite sheet of the other film, the back solar cell, the solar cell with the odd plate 1, the δ is placed again The sealant layer 2 of the closed power generating element is preferably disposed such that the ρ2 layer of the laminated sheet of the present invention is at the opposite side (6 of Fig. 1). By taking it, it is possible to improve the resistance to the reflection of the structure from the ground to the structure A - y a L e , which can become a durable solar cell and thin the thickness. In the case of the present invention, in the case of the present invention, the front side surface of the closable material and the second side of the second layer includes the P1 layer, and the closeness of the closed material f 古 f 古 古 ... ... ... ... ... ... 孙 孙 孙 孙Or, the more preferable viewpoint is that the layer system is disposed at a position on the side of the sealing material layer 2. The power generation component 3 is a person who uses sunlight, and can replace the crystal gems and the many gentlemen... Liliang is replaced by the electric energy workshop 4 eve, the Ό日日石夕, the microcrystalline 矽 system, the non-opening, the eve , copper indium selenide system, compound semi-conducting lanthanide system, "' according to the purpose of the 亓 亓 亓 Α糸 Α糸 Α糸 Α糸 Α糸 等 , , ' ' ' ' ' ' ' ' ' ' ' ' 因 , , , , , , , , , , , , , The composite parts are connected in parallel and used in parallel. The light-transmissive shape of the A 4 surface layer is the highest in the solar cell, and the high mechanical strength is high. Anti-climate solar cell, transparent material of I f. In the present invention, the material can be used for the transparent substrate 4, if it can satisfy the above-mentioned material, for example, glass, -26-201244940 Ethylene-ethylene copolymer (ETFE), polyvinyl fluoride resin (PVF), polyvinylidene fluoride resin (pVDF), polytetrafluoroethylene resin (TFE), tetra-ethylene-hexafluoropropylene copolymer Fluorine resin or olefin such as (FEp), polyfluorinated vaporized ethylene resin (CTFE), or polyvinylidene fluoride resin A hydrocarbon resin, an acrylic resin, a mixture thereof, etc. are preferable. In the case of glass, it is more preferable to use a reinforced material. Further, in the case of using a light-transmitting substrate made of a resin, from the viewpoint of mechanical strength It is to be noted that the above-mentioned resin may be suitably used for one-axis or two-axis extension. Further, in order to impart adhesion to an EVA-based resin or the like which is a sealing material for a power-generating element, it is preferable to provide such a substrate. The surface is subjected to corona treatment, plasma treatment, ozone treatment, and easy subsequent treatment. The sealing material 2 for enclosing the power generation element is designed to cover the surface of the electric component by resin and fix it, and the external environmental protection power generation element And electrical insulation, in addition to the light-transmitting substrate or backing plate and power generation components, it can be used with high transparency, weather resistance, high adhesion, high heat resistance For example, ethylene-vinyl acetate copolymer (EVA), ethylene methacrylate copolymer (EMA), ethylene ethyl acrylate copolymer (eea) resin, ethylene-ruthenium may be preferably used. base An olefinic acid copolymer (EMAA), a polyionic polymer tree, a polyvinyl butyral resin, and the like, etc. As described above, the solar cell back sheet used in the laminated sheet of the present invention is assembled to solar energy. The battery system can be made into a highly durable and/or thin solar cell system compared to the prior solar cell. The solar cell of the present invention, the solar power generation system, the power source of small electronic parts, and the like are not limited to outdoor use, indoors. For use, it can be suitably used in various applications. -27- 201244940 [Evaluation method of characteristics] A. Layer thickness ΤΙ, T2, and laminate ratio T1/T2 are obtained in the following order (A1) to (A 4). The measurement was performed at 10 locations, and the layer ΤΙ (μιη) of the P1 layer, the layer thickness P2 (μιη) of P2, and the layering ratio T1/T2 were set as the average value. (Α1) Using a microtome, the laminated sheet was cut in the thickness direction and cut perpendicularly to the direction of the laminated sheet surface (A2), and then the cut cross section was observed by an electron microscope to be enlarged by 500 times. image. In addition, the observation site is determined by the fact that the upper and lower directions of the image are parallel to the thickness of the laminated sheet, and the left and right direction of the image is flat with the direction of the laminated sheet. In the thickness direction, the entire image cannot be accommodated in one image. In the case, an image is prepared, and the observation position is observed in the thickness direction, and a plurality of images are matched, and the thickness is confirmed. (A 3) The layer thickness T2 of the layer thickness layer P2 of the p 1 layer in the image obtained in (A 2) was obtained. (A4) T1 is divided by T2, and the layering ratio T1/T2 is calculated. B. Inorganic fine particle content rate Wal, Wa2, Wave Each layer of the P1 layer and the P2 layer was cut from the laminated sheet, and the inorganic fine particle contents Wa1 and Wa2 were determined by the method. The mass wa (g) of the cut material was measured. Next, the inorganic fine particles obtained by fractionating the inorganic fine particles in the insoluble components which have been centrifuged are dissolved in dioxane t, washed with dioxane, and centrifuged. Further, the washing operation is repeated until the alcohol is no longer turbid even after the centrifugation. The wa'(g) ' of the obtained inorganic fine particles was determined from the following formula (3). The inorganic fine particle content was changed and the thickness was not changed. , and intend to present it. Shape, by T1, the following chlorine. Will, add B quality -28-.201244940 Inorganic particle content rate (mass i%) = (wa'/wa)xl〇〇". (3) And 'P1 layer and P2 layer inorganic particle content rate wave system It is obtained by the following formula (1). The average particle content of the inorganic particles is Wave = (Wa 1 XT 1 + Wa2 X T2) / (T1 + T2)... (1) where 'ΤΙ is the layer thickness of the ΐ layer (μπι), and Τ2 is the layer thickness of the layer 2 (πι). C ·Mechanical properties of the sheet According to ASTM-D882 (refer to ASTM Standard Yearbook, 1 999 edition)', the specimen was cut out to a size of 1 cm x 20 cm, and the elongation at break was stretched at a distance of 5 cm between the chucks and a tensile speed of 300 mm/min. . Further, the number of samples was n = 5, and the measurement was performed as the average value in the respective directions of the longitudinal direction and the lateral direction of the laminated sheet.

With respect to the obtained elongation at break, the case where the elongation at break was 80% or more was determined in the following manner: the case where the elongation at break of s was 60% or more and less than 8% by weight: the elongation at break of A was 40% or more and less than 6% by weight. :B Case where the elongation at break is 30°/° or more and less than 40%: c. Elongation at break of 2〇% or more and less than 3〇%: Case where elongation at break of D is less than 2〇%: E & main 〇 It is good, in which D. The elongation at break after the damp heat test is 1%. After the shape of the test piece is formed (lcmx20cm), the pressure cooker of the company is made of flat α, at a temperature of 12 5 ΐ, relative Degree l〇〇%RH is treated for 48 hours under π conditions, and then the elongation at break is measured according to the upper pair of '29-201244940. Further, the measurement was η = 5, and after the measurement was performed in each of the longitudinal direction and the transverse direction of each of the sheets, the average value was defined as the elongation at break E1. The case where the elongation at break is more than 40%: the case where the elongation at break of S is more than 30% and less than 40%: a. The elongation at break is more than 20% and less than 30%: b elongation at break 15q/() or more and less than 2〇%: C elongation at break is 1% or more and less than 15%: the elongation at break of 〇 is less than 1%%: ES to D is good, of which § is the most Excellent. E•Elongation retention rate after the light resistance test _ After the ° material was cut into the shape of the measurement piece (1 cm X 2 0 cm), the Esuper UV tester SUV-W131 manufactured by Iwasaki Electric Co., Ltd. was used. Temperature 60. (:, relative humidity 5〇%RH, intensity 1〇〇mW/cm2 (light source: metal _ lamp, wavelength range: 295 to 45 〇 nm, peak wavelength: 365 nm) 照射 conditions for 4 8 hours' thereafter In addition, the breaking elongation of the above c. is measured as η = 5, and after measuring in the longitudinal direction and the transverse direction of the film, the average value is taken as the breaking elongation Ε 2. Further, before the treatment The film was also measured for elongation at break Ε0 according to the above item c. Using the elongation at break Ε0, Ε2 thus obtained, the elongation retention ratio was calculated according to the following formula (4). Elongation retention ratio (%) = (Ε2/Ε0 Χ100 (4) The elongation retention ratio obtained is determined in the following manner: The elongation retention ratio is 50% or more: S elongation retention is 40% or more and less than 50%: a -30- 201244940

When the elongation retention ratio is 30% or more and less than 40%: b. The elongation retention ratio is 20% or more and less than 30%: c elongation retention ratio is 10% or more and less than 2% by weight: D elongation retention ratio is less than 1 〇 % case: ES to D is good, with s being the best. Further, in the case where the laminated sheet is asymmetric, ultraviolet rays are irradiated from the side of the p2 layer of the laminated sheet of the present invention. F·relative reflectance ^ The reflectance at a wavelength of 56 〇 nm was measured using a spectrophotometer U-341 (manufactured by Hitachi, Ltd.) as a relative reflectance. The number of samples: ::= 5, the relative reflectance of each was measured, and the average value was calculated. The measuring unit uses a Φ60ιηιη integrating sphere (model 13〇_〇632) to mount a 1°° tilting spacer. X, in the standard white plate system using Oxidation (model 210-0740). Further, in the case where the laminated sheet is asymmetric, the measurement is performed on the side of the second layer of the laminated sheet. y ', the reflectance obtained is determined in the following manner. The case where the relative reflectance is 94% or more: the case where the relative reflectance of s is 92% or more and less than 94%: a relative reflectance is 89% or more and less than 92. Case of /(): a case where the relative reflectance of β is 85% or more and less than 89%: the case where the relative reflectance of c is less than 85 %: d S to C is good, wherein s is the most excellent. G. Hue (b value) According to JIS-Z-8722 (1 994 edition), using Separation type color difference industrial color SE-2000, light source halogen lamp 12V4A hS_=c post-split mode) 'Measurement sheet according to reflection method Hue (b value). 201244940 Η ·Color change after UV irradiation Ab The sheet is made of Iso UV tester S-W131 from Iwasaki Electric Co., Ltd. at a temperature of 6〇t, a relative humidity of 5〇%, and a strength of 100mW/cm (light source, metal halide lamp, In the wavelength range: 295 to 450 nm, peak wavelength: 365 nm), the b value after 48 hours of irradiation and the b value before and after the test were measured in accordance with the above g term, and the difference was changed as the color tone after ultraviolet irradiation. The obtained color tone change (Δ" is determined in the following manner. When the color tone change Ab is 1 or less: $color change Δ!) is larger than 1, 15 or less: A color change Ab is larger than 1.5 or less Case: B case where the hue change Ab is larger than 2, 3 or less: c hue change ΔΙ) is larger than 3, 5 or less: D case where the hue change Ab is greater than 5: e S to D is good, and s is the most excellent. Further, in the case where the laminated sheet is asymmetric, the ultraviolet rays are irradiated from the side of the P2 layer of the laminated sheet of the present invention. Adhesion The adhesion to the EVA sheet was measured in accordance with JIS K 68 54 (1994 edition). The test piece was laminated on a semi-reinforced glass having a thickness of 〇·3 mm, and a 500 μm thick EVA sheet manufactured by Sanvic Co., Ltd., and a laminated sheet of Examples and Comparative Examples which were subjected to corona treatment were used, and the laminate was laminated. Machine (laminator) After the vacuum suction, under the heating condition of n5t, using the load of 29.4 N/cm2, the object treated by pressing for 15 minutes, the width of the test piece after the strength test is set to l〇mm, and 2 pieces of t are prepared. Test -32- 201244940 pieces, for each test piece, change 枯 枯 枯 τ 文 文 % % τ τ 测定 测定 测定 测定 测定 测定 测定 测定 测定 测定 测定 测定 测定 测定 测定 测定 测定 测定 测定 测定 测定 测定 测定 测定 测定 测定 测定 测定 测定 测定 测定In the case of a strong sound Α 100N/50nm or more, the value of the value of the value is ^, and the N is a practically problem-free grade. The peel strength to be applied is determined by the following method: the peel strength is 65 N/1 Gmm or more: s shape

The peeling strength is 55N/1〇mm or more and less than 6 (7)mm. A is less than 55N/1 0mm. The above is less than 4 5 N /1 0 m m. The above is less than 35N/10mm.

Peel strength is 45N/l〇mm B shape

Peel strength is 35N/10mm C

The peel strength was 25 N/10 mm shape: the case where the D peel strength was less than 25 N/l 〇 mm: e S to D was good', and § was the most excellent. [Examples] Hereinafter, the examples of the invention are described, but the invention is not necessarily limited thereto. (Materials) • Polycarbonate-based resin (PC (1)) tarflon, A2200, manufactured by Idemitsu Kosan Co., Ltd., and the polycarbonate resin, which is a dihydroxydiaryl compound, A polycarbonate resin containing 2 - bis(4-hydroxyphenyl)propane (commonly known as bisphenol a) as a main component at a temperature of 300 Torr, and a load of 12 kg is 12 cm 3 /1 Omin. -33 - 201244940 • Polycarbonate-based resin (PC(2)) "Tarfi〇n" A2600 manufactured by Idemitsu Kosan Co., Ltd.. In addition, the polycarbonate resin is a 2,2-double which is a dihydroxydiaryl compound. (4 - phenyl) propylene (commonly known as bis) a polycarbonate resin as a main component, at a temperature of 300X: a load of 1.2kg, MVR is 6cm3 / 1 Omin 丙烯酸. Acrylic resin (acrylic acid (1) ) "Parapet, HRL100 0-L, manufactured by Kuraray Co., Ltd.". In addition, the acrylic resin is an acrylic resin containing, as a main component, a mercapto methacrylate having a (meth)acrylonyl group as a main component, and is an acrylic resin containing no elastic component. • Acrylic resin (acrylic acid (2)) is manufactured by Sumitomo Chemical Co., Ltd. "Sumipex, ΗY50Y. In addition, this acrylic resin is used as a mercapto methacrylate having a compound having a (meth) acrylonitrile group. The acrylic resin which is a main component is an acrylic resin containing 30% by weight of an elastic component. (Reference Example 1) 50 parts by mass of PC(1) and 50 parts by mass of rutile oxidized oxidized particles having an average particle diameter of 21 〇 nm The ventilated 260. 〇 two-axis kneading extruder is melt-kneaded and melt-extruded, and discharged into a strand shape. After cooling at a temperature of 25 ° C, it is immediately cut, and the titanium oxide particle concentration is 50% by mass. (Master B 1) (Reference Example 2) A masterbatch of a titanium oxide fine particle concentration of 5% by mass was produced in the same manner as in Reference Example 1 except that PC (2) was used as the polycarbonate resin. MB2) -34- 201244940 (Reference Example 3) 50 parts by mass of acrylic acid (2) and 5 parts by mass of an average particle size of 21 〇 nm of rutile-type titanium telluride fine particles, which were ventilated at 22 〇. : Melting in the shaft kneading extruder After kneading, it was melt-extruded and discharged into a strand shape. After cooling with water at a temperature of 25 ° C, the master batch (mb3) having a titanium oxide particle concentration of 50% by mass was immediately cut and formed (Reference Example 4). A masterbatch (mb4) of 50% by mass of zinc oxide fine particles was obtained in the same manner as in Reference Example 3 except for the zinc oxide fine particles having an average particle diameter of 29 Å. (Example 1) Using a main extruder and In the secondary extruder, in the main extruder (single-axis extruder), the PC (1) and the titanium oxide masterbatch (MB1) obtained in Reference Example i are mixed to make the titanium oxide content rate The composition of the composition of the P1 layer was dried by hot air at a temperature of 110 ° C for 6 hours, and was melt-extruded at a temperature of 280 ° C, and then subjected to a cut-off filter of 8 μm. On the one hand, in the secondary extruder, the dibasic acid (1) and the acrylic acid (2), the titanium oxide masterbatch (mb3) obtained in Reference Example 3 are mixed to make the titanium oxide content, rubber The composition content is the composition of the P2 layer shown in Table ,, and the hot air is supplied at a temperature of 110 Τ for 6 hours, supplied, and melted. Then, the pressure is supplied to the self-extruding machine, and the thickness of the p 2 layer supplied from the sub-extruder is made into the P1 layer: Ρ 2 layers = 2 : 1. The white layer is co-extruded by molten two layers to form a laminated sheet, which is cooled and solidified by electrostatic external application on a drum maintained at a surface temperature of 7 ° C, and then cooled to room temperature to obtain -35- 201244940 The laminated sheet obtained is obtained as shown in the sound 1 and evaluated as thin; the second characteristic of the characteristic, the layering ratio, as shown in Table 2, is known as the mechanical properties of the sheet. 12 is shown. Its layer. Further, the light reflectivity, the dense ', and the 2 ultraviolet resistance are excellent (Examples 2 to 15). The moist heat resistance is also good except that the ratio of the thickness of the P1 layer, the 5>2 layer is changed to two: External modification:: the composition of the two 'obtained a layer of thickness 30 〇μίη. Review 巧 ^ Qiao, the results of the target example 1 as shown in Table 1, 2. It can be seen that: the film of the layer of the film "and the light" Reflective, adhesive, and moisture resistant. Further, in the examples 5 to 3, ..., Μ Η 1 〇, 12, the mechanical characteristics of the film, the ultraviolet ray resistance, the light linearity, the light reflectivity, and the heat of adhesion were excellent in balance. (Example 1 6) In addition to making the composition of the m Ρ 2 layer into both sides of the p! layer supplied from the main extruder of Table i, the two layers from the sub-extruder were set to the P2 layer by the thickness ratio: P One layer: P2 layer = i: and the same as in the first embodiment, the laminate of the thickness was obtained in the same manner as in the first embodiment. As a result of evaluating the characteristics of the obtained laminated sheet, a laminated sheet excellent in sheet mechanical properties, ultraviolet resistance, light reflectivity, and anti-sentence was obtained. However, compared to other embodiments, the connectivity is low. '° (Example 1 7) In addition to changing the composition of the P1 layer and the P2 layer to the composition of the table i, the ratio of the layer thicknesses of the Pi layer and the P2 layer is the same as that of the table i. The P1 layer, the same, the characteristics, and the external linearity are also [to 4, moisture resistant, and are shown in the supply of 8:1, 3 ΟΟμπι. The moist heat of the fruit was dense, and it was obtained in the same manner as in Example 1 of the Japanese Patent Application Laid-Open No.-36-201244940. The characteristics of the obtained thick sheet were evaluated. The results are shown in Tables 1 and 2. It is known that the laminated sheet is excellent in sheet mechanical properties and ultraviolet resistance. Moreover, light reflectivity, adhesion, and moist heat resistance are also good. (Example 18) In addition to changing the particles of the Ρ2 layer to the oxidized particles, the composition of the Ρ1 I and Ρ2 layers was changed to the composition of Table 1, and the ratio of the layer thicknesses of the PI f and Ρ 2 layers was changed to other than Table 1. A laminate of thickness m was obtained in the same manner as in Example i. The characteristics of the obtained laminated sheets were evaluated, and the results are shown in Table 2. It is known that it is a laminated sheet excellent in sheet mechanical properties and ultraviolet ray resistance. Moreover, light reflectivity, adhesiveness, and moist heat resistance are also good. (Comparative Examples 1 to 6) The same method as in the Example 将 except the P1 layer was used. The characteristics of the obtained laminated sheets were evaluated, and the composition of the layers was made up of the composition of Table 1. The results were as shown in Table 1 3 ΟΟ μηι in Comparative Examples 1, 4, and Chemicals. Further, it is shown in Comparative Example 2 to (Comparative Examples 7) and 2. The result of 6' is that the mechanical properties of each sheet are inferior. 5 As a result, the ultraviolet resistance is deteriorated. Ichikawa "Eight slasher<-milk is changed to PC糸 nucleolipid' and Ρ1 layer, Ρ2 layer of 士士达达士, and the composition is changed to Table 1, the phase and the embodiment 1 In the same way, the seizure is paid; the layer X of 300 μιηη. The characteristics of the laminated sheets obtained by the price of the gas are as follows: the results are shown in Tables 1 and 2. Compared with the actual examples, the results are UV-resistant deterioration. -3 7- 201244940 [Industrial Applicability] The laminated sheet of the present invention can provide a laminated sheet which is excellent in ultraviolet resistance and has mechanical properties suitable for a solar battery back sheet as compared with the conventional polycarbonate resin sheet. These laminated sheets are used for solar cells. In addition to the back sheet, it is suitable for applications such as liquid crystal display panels, automotive materials, and building materials, and it is suitable for use in resistance to light and light reflectivity. In particular, by using such polycarbonate resin sheets, It can provide a backsheet with high durability solar cells and a solar cell using the same. First, the resin is also used for anti-UV by -38- 201244940 Table 1-1 Raw material P1 layer P2 resin masterbatch resin (1) Resin ( 2) Masterbatch type mass% Species mass% Species mass% Species mass% Species mass% Example 1 PC(1) 90 MB1 10 Acrylic acid (1) 32.3 Acrylic acid (2) 65.7 MB3 2 Example 2 PC(1) 90 MB1. 10 Acrylic (1) 32.3 Acrylic (2) 65.7 MB3 2 Example 3 PC(1) 90 MB1 10 Acrylic (1) 13.3 Acrylic (2) 46.7 MB3 40 Example 4 PC(1) 90 MB1 10 Acrylic (1) 13.3 Acrylic ( 2) 46.7 MB3 40 Example 5 PC(1) 90 MB1 10 Acrylic (1) 30.3 Acrylic (2) 63.7 MB3 6 Example 6 PC(1) 90 MB1 10 Acrylic (1) 30.3 Acrylic (2) 63.7 MB3 6 Example 7 PC(1) 90 MB1 10 Acrylic (1) 21.3 Acrylic (2) 54.7 MB3 24 Example 8 PC(1) 90 MB1 10 Acrylic (1) 21.3 Acrylic (2) 54.7 MB3 24 Example 9 PC(1) 90 MB1 10 Acrylic (1) 23.3 Acrylic (2) 56.7 MB3 20 Example 10 PC(1) 90 MB1 10 Acrylic (1) 56.7 Acrylic acid (2) 23.3 MB3 20 Example 11 PC(1) 90 MB1 10 Acrylic acid (1) 73.3 Acrylic acid (2) 6.7 MB3 20 Example 12 PC(1) 90 MB1 10 Acrylic ( 1) 6.7 Acrylic acid (2) 73.3 MB3 20 Example 13 PC(1) 80 MB1 20 Acrylic acid (1) 23.3 Acrylic acid (2) 56.7 MB3 20 Example 14 PC(1) 94 MB1 6 Acrylic acid (1) 23.3 Acrylic acid (2) 56.7 MB3 20 Example 15 PC(1) 98 MB1 2 Acrylic acid (1) 23.3 Acrylic acid (2) 56.7 MB3 20 Example 16 PC(1) 90 MB1 10 Acrylic (1) 23.3 Acrylic (2) 56.7 MB3 20 Example 17 PC(2) 90 MB2 10 Acrylic (1) 23.3 Acrylic (2) 56.7 MB3 20 Example 18 PC(1) 90 MB1 10 Acrylic (1 23.3 Acrylic acid (2) 56.7 MB4 20 Comparative Example 1 PC(1) 90 MB1 10 Acrylic acid (1) 32.3 Acrylic acid (2) 65.7 MB3 2 Comparative Example 2 PC(1) 90 MB1 10 Acrylic acid (1) 32.8 Acrylic acid (2) 66.2 MB3 1 Comparative Example 3 PC(1) 90 MB1 10 Acrylic (1) 32.8 Acrylic (2) 66.2 MB3 1 Comparative Example 4 PC(1) 90 MB1 10 Acrylic (1) 8.3 Acrylic (2) 41.7 MB3 50 Comparative Example 5 PC(1) 90 MB1 10 Acrylic (1) 8.3 Acrylic (2 41.7 MB3 50 Comparative Example 6 PC(1) 90 MB1 10 Acrylic (1) 13.3 Acrylic (2) 46.7 MB3 40 Comparative Example 7 PC(1) 90 MB1 10 PC 80 - 0 MB1 20 -39- 201244940 Table 2 Layer of laminated sheets constitutes laminate ratio T1/T2 inorganic fine particle amount Wal inorganic fine particle amount Wa2 elastic component Wb2 WalAVa2 (Wa+18) / 9.5 average particle content - mass % mass % mass % - mass % Example 1 P1/P2 2 5 1 20 5 2 3.67 Example 2 P1/P2 30 5 1 20 5 2 4.87 Example 3 P1/P2 30 5 20 20 0.25 4 5.48 Example 4 P1 /P2 4 5 20 20 0.25 4 8 Example 5 P1/P2 4 5 3 20 1.67 2.21 4.6 Example 6 P1/P2 15 5 3 20 1.67 2.21 4.88 Example 7 P1/P2 15 5 12 20 0.42 3.16 5.44 Example 8 P1/P2 4 5 12 20 0.42 3.16 6.4 Example 9 P1/P2 8 5 10 20 0.5 2.95 5.56 Example 10 P1/P2 8 5 10 10 0.5 2.95 5.56 Example 11 P1/P2 8 5 10 5 0.5 2.95 5.56 Example 12 P1/P2 8 5 10 25 0.5 2.95 5.56 Example 13 P1/P2 8 10 10 20 1 2.95 10 Example 14 P1/P2 8 3 10 20 0.3 2.95 3.78 Example 15 P1/P2 8 1 10 20 0.1 2.95 2 Example 16 P2/P1/P2 4 5 10 20 0.5 2.95 6.00 Example 17 P1/P2 8 5 10 20 0.5 2.95 5.56 Example 18 P1/P2 8 5 10 20 0.5 2.95 5.56 Comparative Example 1 P1/P2 1.5 5 1 20 5 2 3.4 Comparative Example 2 P1/P2 2 5 0.5 20 10 1.95 3.5 Comparative Example 3 P1/P2 30 5 0.5 20 10 1.95 4.85 Comparative Example 4 P1/P2 30 5 25 20 0.2 4.53 5.65 Comparative Example 5 P1/ P2 4 5 25 20 0.2 4.53 9 Comparative Example 6 P1/P2 3 5 20 20 0.25 4 8.75 Comparative Example 7 P1/P2 8 5 10 0 0.5 2.95 5.56 -40- 201244940 Table 2

Mechanical properties, UV resistance, optical properties, adhesion, moisture resistance, sheet strength, color change after ultraviolet irradiation, Δ b, elongation retention after light resistance test, reflectance, peel strength, elongation after damp heat test, Example 1 DCCBAA, Example 2, SDDBAA implementation Example 3 SSSAAA Embodiment 4 DSSSAA Embodiment 5 BSSBAA Embodiment 6 ASSBAA Embodiment 7 ASSAAA Embodiment 8 BSSAAA Embodiment 9 ASSAAA Embodiment 10 ASSAAA Embodiment 11 CSSAAA Embodiment 12 ASSAAA Embodiment 13 BSSSBC Embodiment 14 ASABSS Embodiment 15 ASCCS s Example 16 ASSAEA Example 17 SSSABA Example 18 ASSBAA Comparative Example 1 EDDCAA Comparative Example 2 DEDCAA Comparative Example 3 AEDCAA Comparative Example 4 ESSAAA Comparative Example 5 ESSSAA Comparative Example 6 ESSSAA Comparative Example 7 SESAAA [Simplified Schematic] No. 1 The figure is a solar-surface cross-sectional formula of the polycarbonate resin sheet of the present invention, which is exemplified by the example No. 1, and the member of the U-shaped Tianchi is required to have a main energy. 1 Back panel for solar cell 2 Sealant layer 3 Power generating element 4 Transparent substrate 5 Side of the sealant layer 2 of the solar cell back sheet Surface of the solar cell back sheet opposite to the sealant layer 2 -4 1- 6

Claims (1)

201244940 VII. Patent application scope: 1 . A laminated sheet having a layer (P 1 layer) having a polycarbonate resin as a main constituent component and an acrylic resin as a main constituent component and containing inorganic fine particles A laminate having a layer Wa2 of 1% by mass or more and 2% by mass or less of the layer (P2 layer), wherein a ratio T1 to T2 of the layer thickness T1 of the P1 layer and the layer thickness 12 of the P2 layer satisfies the following formula (I), (Wa2+ 18)/9.55 T1/T2(I). 2. The laminated sheet according to the item i of the patent application, wherein the pi layer contains inorganic fine particles, and the inorganic fine particle content rate of the P1 layer is 〇1% by mass or more and 15% by mass or less. 3. The laminated sheet according to claim 1 or 2, wherein the ratio of the inorganic fine particle content rate Wa1 of the pi layer to the inorganic fine particle content rate Wa2 of the P2 layer is Wal/Wa2 of 0.8 or less. 4. The laminated sheet according to any one of claims 1 to 3, wherein one of the outermost layers of the laminated sheet is a P1 layer, and the other outermost layer is a P2 layer. 5. A solar cell backsheet using the laminate of any one of claims ii to 4. 6. The solar cell backsheet of claim 5, wherein at least one of the outermost layers is a P2 layer. 7. A solar cell using a solar cell of a solar cell backsheet as claimed in claim No. $6 or 6. -42-