TW201307065A - Laminates and solar modules containing the same - Google Patents

Abstract

The present invention provides a thin sheet which can be favorably used as a back sheet constituting a rear surface of a solar cell module, and an assembly thereof can be assembled using an adhesive (or a viscous material). One embodiment of the present invention is a laminate comprising: a fluororesin layer; and an undercoat layer provided on the first side of the fluororesin layer, and comprising an acrylic polymer, the acrylic polymer Contains an aminoethyl group.

Description

Laminates and solar modules containing the same

The present invention relates to a laminated board and to a solar cell module and an undercoat layer comprising the laminated board.

It is known to use a laminate which combines different materials to satisfy various desired properties such as weather resistance, electrical insulation, etc. as a front or back panel constituting a front surface or a rear surface of a solar cell module. Further, a laminate having a fluororesin layer containing a fluororesin as the outermost layer is being investigated as a front plate or a back sheet of this type because of its excellent weather resistance. For example, Japanese Laid-Open Patent Publication No. 2008-546557 discloses a multilayer film back sheet comprising a semicrystalline fluoropolymer as a first outer layer, a polyester intermediate layer, and a second outermost layer of an olefin polymer. Emerging solar technologies such as organic photovoltaic devices (OPVs) and thin-film solar cells, such as copper indium gallium selenide (CIGS), need to avoid water vapor and require durability in outdoor environments (eg, ultraviolet (UV) light) under). Generally, glass has been used as an encapsulating material for such solar devices because glass is an excellent water vapor barrier, optically transparent, and stable to UV light. However, glass is heavy, brittle, difficult to have flexibility, and difficult to handle. There is a need to develop transparent flexible encapsulating materials that can be used in place of glass that do not have glass defects but have barrier properties similar to glass and UV stability. A solar cell module in which a fluoropolymer is used in place of glass is known.

Usually assembly of components such as junction boxes, reinforcement frames or the like is too The rear surface of the solar cell module, and desirably an adhesive layer (e.g., pressure sensitive adhesive (PSA)), is used to assemble the components because of their excellent operability. However, if a laminate having a fluororesin layer as the outermost layer is used as the back sheet, the adhesion between the fluororesin layer and the adhesive layer is small, so that it is difficult to assemble the components using the adhesive layer. Also, the fluoropolymer is assembled to the front side of the solar cell module and may require an adhesive layer such as a PSA.

An object of the present invention is to provide a laminate which can be advantageously used as a front or back surface of a solar cell module, respectively, and which can be assembled using an adhesive layer, and which provides a solar energy comprising the laminate. Battery module.

One aspect of the present invention is a laminate comprising: a fluororesin layer; and an undercoat layer provided on the first side of the fluororesin layer, and comprising an acrylic polymer, the acrylic polymer Contains a primary or secondary amine group.

The laminate according to the above aspect contains a fluororesin layer, and therefore it has excellent weather resistance, water resistance, moisture resistance, and the like, and it can be favorably used as a front plate or a back plate which constitutes the front surface or the rear surface of the solar cell module. Further, the laminate according to this aspect has an undercoat layer on the first side of the fluororesin layer, and the undercoat layer has excellent adhesion to both the fluororesin layer and the adhesive layer. Therefore, an adhesive layer such as a junction box, a reinforcing frame or the like can be easily assembled to the laminated board.

In another aspect, the laminate further comprises an adhesive layer provided on the undercoat layer, the adhesive layer comprising a polymerization having a carboxylate group or a guanamine functional group Things. The adhesion of the undercoat layer to the adhesive layer is particularly excellent. Therefore, if an assembly such as a junction box, a reinforcing frame or the like is assembled to the adhesive layer of the laminate, excellent adhesion between the fluororesin and the assembly can be obtained. The adhesive layer may include a pressure sensitive adhesive, a hot melt adhesive or other adhesive including a polymer having a carboxylate group or a guanamine functional group such as a carboxylic acid, a carboxylic acid ester, a guanamine or the like.

In another aspect, the laminate includes a first resin layer and a second resin layer sequentially provided on the second side of the fluororesin layer, the first resin layer comprising a polyester resin and the second resin layer comprising Olefin polymer. Such a laminate can be more advantageously used as a back sheet constituting the rear surface of the solar cell module.

One aspect of the present invention provides a solar cell module including the above laminated board. According to this solar cell module, it is possible to mount components such as a junction box, a reinforcing frame, and the like with excellent adhesion on the rear side of the solar cell module using an adhesive layer.

Further, in another aspect of the present invention, there is provided a primer for forming an undercoat layer of the above laminated sheet, comprising an acrylic polymer comprising a primary amine group or a secondary amine group .

Further, in another aspect of the invention, there is provided a laminate comprising a fluororesin layer, wherein a first side of the fluororesin layer is primed with a compound comprising an acrylic polymer, the acrylic polymer comprising a plurality of A primary or secondary amine group. The fluororesin layer of the laminate is primed with the above primer, so that the adhesion between the adhesive and the fluororesin layer is excellent. Therefore, when the laminate is used as the back sheet of the solar cell module, an adhesive layer such as a junction box, a reinforcing frame or the like can be easily assembled to the fluororesin layer. (It is the outermost layer).

According to the present invention, it is possible to provide a laminate which can be advantageously used as a back sheet constituting a rear surface of a solar cell module and which can be assembled using an adhesive layer, and a solar cell module including the laminate. The laminate can also be advantageously used as part of the front or front portion of the solar module.

The preferred embodiments of the present invention are described in detail below with reference to the drawings, but the invention is not limited to the following embodiments. It is to be noted that in the following description, the same or similar parts are designated by the same reference numerals and the repeated description is omitted.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view showing an embodiment of a laminated board of the present invention, and Fig. 2 is a schematic cross sectional view showing a cross section taken along line I-I of Fig. 1. The laminate 100 includes a fluororesin layer 10 and an undercoat layer 12 provided on a first side of the fluororesin layer, the undercoat layer 12 comprising an acrylic polymer having a primary amine group or a secondary amine group. Further, the laminated board 100 includes a first resin layer 14 and a second resin layer 16 which are sequentially provided on the second side surface of the fluororesin layer, the first resin layer 14 comprising a polyester resin and the second resin layer 16 comprising an olefin polymerization Things.

The fluororesin layer 10 is a layer containing a fluororesin. The fluororesin is a monomer (including a polymer such as tetrafluoroethylene (TFE), hexafluoropropylene (HFP), perfluoroalkoxyvinyl ether (PFA), vinylidene fluoride (VDF), chlorotrifluoroethylene, etc.) .

Specifically, the fluororesin may be a tetrafluoroethylene-ethylene copolymer, a tetrafluoroethylene-hexafluoropropylene copolymer, a tetrafluoroethylene-perfluoroalkoxyvinyl ether copolymer, a vinylidene fluoride-chlorotrifluoroethylene copolymer. , tetrafluoroethylene-hexafluoropropylene-ethylene copolymer, vinylidene fluoride-tetrafluoroethylene copolymer, vinylidene fluoride-hexafluoropropylene copolymer, tetrafluoroethylene-hexafluoropropylene-vinylidene fluoride copolymer (THV) and so on.

The fluororesin preferably contains a vinylidene fluoride unit (in other words, the resin is a polymer of a monomer containing vinylidene fluoride). According to this fluororesin, the adhesion between the fluororesin layer 10 and the undercoat layer 12 is further improved.

Further, the fluororesin preferably contains a vinylidene fluoride unit and a tetrafluoroethylene unit, and more preferably contains a vinylidene fluoride unit, a tetrafluoroethylene unit, and a hexafluoropropylene unit.

Further, in order to obtain excellent transparency, barrier properties, and flexibility, the fluororesin is preferably a monomer comprising 36 to 72% by weight of tetrafluoroethylene, 0 to 56% by weight of hexafluoropropylene, and 8 to 45% by weight of vinylidene fluoride. The polymer.

The fluororesin content in the fluororesin layer 10 is preferably at least 90% by weight based on the total weight of the fluororesin layer 10.

The thickness of the fluororesin layer 10 is not particularly limited, but may be in the range of 0.01 to 0.15 mm, or it may be in the range of 0.03 to 0.05 mm.

The undercoat layer 12 contains an acrylic polymer and has excellent adhesion to both the fluororesin layer 10 and the adhesive, and the acrylic polymer contains a primary amine group or a secondary amine group.

An example of the acrylic polymer containing a primary or secondary amine group is an acrylic polymer having a structural unit represented as follows:

In the structural unit shown above, n is an integer of 1 or more (preferably an integer of 1 to 3), and R ¹ is a hydrogen atom or a methyl group. The acrylic polymer having the structural unit represented above can be obtained, for example, by reacting an acrylic polymer containing an acrylate group unit with aziridine.

The acrylic polymer preferably comprises a plurality of primary or secondary amine groups, more preferably a plurality of aminoethyl groups, and preferably comprises a plurality of structural units as indicated above.

The acrylic polymer content in the undercoat layer 12 is preferably at least 90% by weight based on the total weight of the undercoat layer 12.

The undercoat layer 12 may contain components other than the above acrylic polymer. For example, as described below, the undercoat layer 12 may comprise an organic solvent or the like. The undercoat layer may also comprise an organic cerium compound. Any suitable organic hydrazine compound can be used, such as a quaternary organic hydrazine compound. In one embodiment, the quaternary organotellurium compound can be defined by a relative positive ion and a relatively negative ion, wherein the phosphorus, arsenic, antimony or nitrogen generally comprises a central atom of the positive ion, and the negative ion can be an organic anion or an inorganic anion (eg, a halide, Sulfate ion, acetate ion, phosphate ion, phosphonate ion, hydroxide ion, alkoxide, phenoxide, bisphenoxide, and the like. In one example, the quaternary organotellurium compound comprises an organic phosphonium salt represented by the formula: [P(R) ₄ ⁺ ]X ^- wherein R can be an alkyl group (including a cycloalkyl group), an aryl group, an alkylaryl group. Or arylalkyl; and X can be any halide. For example, the organic phosphonium salt can be an organic phosphonium chloride salt such as triphenylbenzylphosphonium chloride, tributylallylphosphonium chloride, and tributylbenzylammonium chloride.

In the laminate 100, an undercoat layer 12 is provided so as to cover the fluororesin layer 10 The entire first side, but in the present invention, the undercoat layer 12 covering the entire first side of the fluororesin layer 10 is not necessarily provided. For example, the undercoat layer 12 can be provided only at the location where the junction box is assembled to the backsheet used in the solar cell module.

The undercoat layer 12 can be produced by applying a primer containing an acrylic polymer and an organic solvent on the first side of the fluororesin layer 10, followed by removing at least a portion of the organic solvent.

The organic solvent is not particularly limited as long as it can dissolve or disperse the acrylic polymer. For example, methyl ethyl ketone, isopropyl alcohol, ethyl acetate, toluene or the like can be used as the organic solvent.

There is no particular limitation on the thickness of the undercoat layer 12, but it may be equal to or less than 5 μm, or equal to or less than 2 μm. The thickness of the undercoat layer 12 can be adjusted by adjusting the amount of the primer solution applied to the first side of the fluororesin layer 10 or the percentage of solids in the primer solution as appropriate.

As described above, when the fluororesin layer 10 contains a fluororesin having a vinylidene fluoride unit, the adhesion between the fluororesin layer 10 and the undercoat layer 12 is improved. The reason for this is not clear, but it is considered that this is because the fluororesin and the acrylic polymer are chemically or ionically bonded when the vinylidene fluoride unit of the fluororesin is reacted with the primary or secondary amine group of the acrylic polymer. .

Further, the adhesion of the undercoat layer 12 to the adhesive layer is particularly excellent. The reason for this is not clear, but it is considered that this is because the polymer in the adhesive layer is reacted when the carboxylate or guanamine functional group of the polymer in the adhesive layer reacts with the amine or secondary amine group of the acrylic polymer. It is chemically or ionically bonded to the acrylic polymer.

Further, the adhesion and adhesion can be further improved by providing a fluororesin containing a vinylidene fluoride unit in the fluororesin layer 10 and providing an acrylic polymer containing a plurality of primary or secondary amine groups in the undercoat layer 12. The layers are glued. It is considered that this is because the polymerization of the vinylidene fluoride unit and the adhesive layer in the fluororesin of the fluororesin layer 10 when the acrylic polymer contained in the undercoat layer 12 contains a plurality of primary or secondary amine groups. The material is chemically bonded via an acrylic polymer.

The first resin layer 14 is a layer containing, for example, a polyester resin and functions as a reinforcing member and/or an electrically insulating layer.

The polyester resin may be polyethylene terephthalate (PET), polyethylene naphthalate (PEN) or the like, and polyethylene terephthalate is preferred.

Further, the first resin layer 14 may also contain other polymers such as polyarylate compounds; polyamines such as polyamide 6, polyamine 11, polyamide 12, polyamine 46, polyamine 66, Polyamide 69, polyamide 610, polyamide 612, etc.; aromatic polyamine; polyphthalamide; thermoplastic polyimine; polyether quinone; polycarbonate, such as bisphenol A Polycarbonate; (inter)acrylic polymer, such as polymethyl methacrylate; chloride polymer, such as polyvinyl chloride, polyvinylidene chloride; polyketone, such as poly(aryl ether ether ketone) (PEEK) Alternating copolymer of ethylene or propylene with carbon monoxide; polystyrene having any stereoregularity, cyclic or chain-substituted polystyrene; polyether such as polyphenylene ether, poly(dimethylphenyl ether), Polyethylene oxide, polyoxymethylene; cellulose derivatives such as cellulose acetate; sulfur-containing polymers such as polyphenylene sulfide, polyfluorene, polyether oxime, and the like.

Further, the first resin layer 14 may contain a polyester resin and components other than the above polymers. Also, the first resin layer 14 can be whitened. If the first resin layer 14 is whitened, in one embodiment of the solar cell module described below, the light of the solar light incident on the side of the glass plate 24 and passing through the solar cell module 20 is not Light incident on the solar cell module 20 but directly incident on the first resin layer 14 is reflected by the first resin layer 14 and can be supplied to the surface of the solar cell module 20. Thereby, the power generation efficiency of the solar cell module 200 is further improved. The whitening method includes, for example, a method including titanium oxide, a method of mixing in bubbles, and the like.

The content of the ester resin in the first resin layer 14 is preferably at least 90% by weight based on the total weight of the first resin layer 14.

The thickness of the first resin layer 14 is not particularly limited, but the thickness thereof may be, for example, in the range of 0.03 to 0.25 mm.

The second resin layer 16 is a layer containing an olefin polymer, and when used as a back sheet of a solar cell module, it can serve as an adhesive layer to bond the solar cell module to the laminate 100. Also, after being applied to the solar cell module, it can serve as an electrically insulating layer.

The olefin polymer may be one or more monomer units derived, for example, derived from an olefin monomer represented by the formula CH ₂ -CHR ³ (wherein R represents a hydrogen atom or an alkyl group having 1 to 18 carbon atoms) polymer. The olefin monomer may be ethylene, propylene, 1-butene or the like, of which ethylene is preferred.

More specifically, the olefin polymer may be polyethylene, polypropylene, polybutene-1, poly(3-methylbutene), poly(4-methylpentene), and ethylene and propylene, 1-butyl Alkene, 1-hexene, 1-octene, 1-decene, 4-methyl-1-pentene and a copolymer of at least one of 1-octadecene and the like.

The olefin polymer can be a copolymer of the above olefin monomer with one or more copolymerizable comonomers. The comonomer is preferably in the range of from 1 to 10% by weight based on the total weight of the olefin polymer.

The comonomer can be, for example, a vinyl ester monomer such as vinyl acetate, vinyl propionate, vinyl butyrate, vinyl chloroacetate, vinyl chloropropionate; acrylic monomers such as acrylates, methacrylates Ethyl acrylate, methyl acrylate, ethyl acrylate, N,N-dimethyl decylamine, methacrylamide, acrylonitrile; vinyl aryl monomer, such as styrene, o-methoxybenzene Ethylene, p-methoxystyrene, vinyl naphthalene; vinyl and vinylidene halide monomers such as vinyl chloride, vinylidene chloride, vinylidene bromide; alkyl maleate and A terminal alkyl fumarate monomer such as dimethyl maleate or diethyl maleate; a vinyl alkyl ether monomer such as vinyl methyl ether or vinyl ethyl ether , vinyl isobutyl ether, 2-chloroethyl vinyl ether; vinyl pyridine monomer; N-vinyl carbazole monomer; N-vinyl pyrrolidine monomer.

Further, the olefin polymer may further comprise a metal salt monomer, and the metal salt monomer contains a carboxyl group. The metal forming the metal salt of the monomer may be a monovalent, divalent or trivalent metal such as sodium, lithium, potassium, calcium, magnesium, aluminum, lanthanum, zinc, zirconium, hafnium, iron, nickel, cobalt or the like.

The second resin layer 16 may contain components other than the olefin polymer. For example, the second resin layer 16 may contain an antioxidant, a light stabilizer, an alkalizing agent, a filler, a surface lubricant, a pigment, an adhesion promoter, and other auxiliary agents.

The content of the olefin polymer in the second resin layer 16 is preferably the second resin layer 16 At least 90% by weight of the total weight.

The thickness of the second resin layer 16 is not particularly limited, but may be in the range of 0.03 to 0.51 mm.

The laminate 100 may have a different configuration from the above, for example, a protective film may be laminated on one side of the side of the undercoat layer 12 opposite to the fluororesin layer 10 or laminated on the second resin layer 16 and the first The resin layer 14 is on the side opposite to the side. A protective film is provided to prevent damage on the laminate 100, the presence of dirt or the like and the protective film can be peeled off during use.

One embodiment of the solar cell module of the present invention will be described below. 3 is a perspective view illustrating an embodiment of a solar cell module of the present invention, and FIG. 4 is a cross-sectional view illustrating a cross section taken along line II-II of FIG.

In the solar cell module 200, the glass plate 24, the first sealing film 22, the solar cell module 20, the second sealing film 18, the second resin layer 16, the first resin layer 14, the fluororesin layer 10, and the undercoat layer The 12 series is laminated in sequence and supported by an aluminum frame 30 covering the side surfaces. Further, the junction box 210 is bonded to the undercoat layer 12 via the acrylic adhesive layer 26.

The glass plate 24, the first sealing film 22, the solar cell module 20, the second sealing film 18, and the junction box 210 are not particularly limited and generally known articles can be used.

Adhesive layer 26 is a layer comprising a polymer having a carboxylate or guanamine functional group. The adhesive layer preferably comprises at least one monomer unit derived from acrylic acid. According to this adhesive layer, it is considered that the acrylic polymer of the undercoat layer 12 can be chemically or ionically bonded, and thus the adhesion to the undercoat layer 12 is excellent.

The preferred embodiments of the present invention have been described above, but the present invention is not limited to such Example. For example, in the above embodiment, the laminated board 100 is described as including the first resin layer 14 and the second resin layer 16, but the laminated board of the present invention does not necessarily have to include the first resin layer 14 and the second resin layer 16, and may Only the fluororesin layer and the undercoat layer 12 are included.

Further, in the above embodiment, the laminate of the present invention is illustrated as a laminate comprising the fluororesin layer 10 and the undercoat layer 12, but the laminate of the present invention may also be a laminate comprising a fluororesin layer, wherein the fluororesin The first side of layer 10 is primed with a compound comprising an acrylic polymer comprising a plurality of aminoethyl groups.

Instance

Hereinafter, the present invention will be described in further detail based on examples, but the present invention is not limited to the following examples.

Example 1

A film having a multilayer structure comprising a sequentially laminated fluororesin layer (THV layer), a polyethylene terephthalate layer, and an ethylene-vinyl acetate copolymer layer (Scotchshield Film 17T, by 3M Minnesota) is prepared. , manufactured by USA). A methyl ethyl ketone solvent containing 2% by weight of an aminoethylated acrylic polymer (NK350: Nippon Shokubai, Co., LTD.; Osaka-Osaka, Japan) was applied to the fluororesin layer of the film and dried. A laminate comprising a primer layer is obtained. The adhesion of the resulting laminate was evaluated by the following method.

Adhesion assessment

One side of the laminate and the undercoat layer were placed side by side on a 3 mm thick glass and vacuum laminated. Next, the acrylic foam tape backed by aluminum foil (double The face glue, Y4300-08, manufactured by Sumitomo-3M, was placed on the undercoat of the laminate and adhered by passing a 5 kg roller thereon (rolling back and forth). The initial sample was allowed to stand at 23 ° C and 55% humidity for 1 day.

The initial sample was subjected to a 90 degree peel test in accordance with JIS Z 0237 at a tensile speed of 300 mm/min. The peel strength (N/cm) is shown in Table 1.

Next, the initial sample manufactured in the same manner as above was subjected to 85 ° C and 85% humidity for 2 weeks, and then allowed to stand at 23 ° C and 55% humidity for 1 day, and a sample was obtained after the high temperature and high humidity test. . The obtained sample was subjected to a 90-degree peel test in accordance with JIS Z 0237 at a tensile speed of 300 mm/min. The peel strength (N/cm) is shown in Table 1.

Further, the evaluated samples were examined after the initial test and the high temperature and high humidity test, and the peeling due to the breakage of the acrylic foam tape was examined.

Comparative example 1

A film having the same three-layer structure as used in Example 1 was prepared, and each containing 1 to 5% by weight of polymethylene polyphenylene isocyanate and chlorinated rubber (Primer N200; Sumitomo-3M, Setagaya-) A toluene solution of ku, Tokyo, Japan) was applied to the fluororesin layer of the film and dried to obtain a laminate having an undercoat layer.

Comparative example 2

A film having the same three-layer structure as used in Example 1 was prepared, and would contain 1 to 5% by weight of polymethylene polyphenylene isocyanate and chlorinated polypropylene (Primer 500; Sumitomo-3M, Setagaya) A toluene solution of -ku, Tokyo, Japan) was applied to the fluororesin layer of the film and dried to obtain a laminate having an undercoat layer.

Comparative example 3

A film having the same three-layer structure as used in Example 1 was prepared, and a solution containing 1 to 5% by weight of an acrylic polymer and chlorinated rubber (Primer 4298 UV; 3M, Minnesota, USA) was applied thereto. The fluororesin layer of the film was dried and a laminate having an undercoat layer was obtained.

Comparative example 4

A film having the same three-layer structure as used in Example 1 was prepared, and an aqueous solution of PAA-HCL-3L (50% polyallylamine hydrochloride (average molecular weight 15,000)) manufactured by Nitto Boseki Co., Ltd. was prepared. The fluororesin layer applied to the film was dried and dried to obtain a laminate having an undercoat layer.

Comparative example 5

A film having the same three-layer structure as used in Example 1 was prepared, and an aqueous solution of PAA-HCL-10L (40% polyallylamine hydrochloride (average molecular weight 150,000)) manufactured by Nitto Boseki Co., Ltd. was prepared. The fluororesin layer applied to the film was dried and dried to obtain a laminate having an undercoat layer.

Comparative example 6

A film having the same three-layer structure as used in Example 1 was prepared, and PAA-15 (15% of an allylamine polymer (average molecular weight: 15,000) aqueous solution) manufactured by Nitto Boseki Co., Ltd. was applied to the film. The fluororesin layer was dried and dried to obtain a laminate having an undercoat layer.

Adhesion assessment

The adhesion of the laminate obtained in Comparative Examples 1 to 6 was evaluated by the above method. The evaluation results are shown in Table 1. Further, as a result of examining the sample after the evaluation, the initial adhesion evaluation of Comparative Example 6 was found (a small amount was found therein). Except for the acrylic foam tape rupture, the acrylic foam tape was not broken in the other comparative examples, but peeling occurred at the boundary between the acrylic foam tape and the laminate.

Comparative example 7

The adhesion of the fluororesin layer to the acrylic foam tape was evaluated in the same manner as in Example 1, and a film having the same three-layer structure as that used in Example 1 was used, but no primer was applied. The evaluation results are shown in Table 1. Further, as a result of examining the sample after the evaluation, it was found that the acrylic foam tape was not broken in the initial test and the high temperature and high humidity test, but peeling occurred at the boundary between the acrylic foam tape and the laminate.

10‧‧‧Fluorine resin layer

12‧‧‧Undercoat

14‧‧‧First resin layer

16‧‧‧Second resin layer

20‧‧‧Solar battery module

22‧‧‧First sealing film

24‧‧‧ glass plate

26‧‧‧Acrylic adhesive layer/adhesive layer

30‧‧‧Aluminum frame

100‧‧‧ laminate

200‧‧‧Solar battery module

210‧‧‧ junction box

1 is a perspective view showing an embodiment of a laminated board of the present invention; and FIG. 2 is a cross-sectional view showing a cross section taken along line I-I of FIG. 1; 3 is a perspective view illustrating an embodiment of a solar cell module of the present invention; and FIG. 4 is a cross-sectional view illustrating a cross section taken along line II-II of FIG.

100‧‧‧ laminate

Claims (9)

A laminated board comprising: a fluororesin layer; and an undercoat layer provided on the first side of the fluororesin layer, and comprising an acrylic polymer, the acrylic polymer containing a primary amine group or two Amine group. The laminate of claim 1, wherein the amine group is an ethylamino group. The laminate of claim 1, wherein the undercoat layer further comprises an organic cerium compound. The laminate of any one of claims 1 to 3, further comprising an adhesive layer on the undercoat layer, the adhesive layer comprising a polymer having a carboxylate group or a guanamine functional group. The laminate of claim 4, wherein the adhesive layer comprises an acrylic pressure sensitive adhesive or a hot melt adhesive. The laminate according to any one of claims 1 to 3, further comprising: a first resin layer comprising a polyester resin, and a second resin layer comprising an olefin polymer The two resin layers are sequentially provided on the second side of the fluororesin layer. A solar cell module comprising the laminate according to any one of claims 1 to 6. A primer comprising: an acrylic polymer comprising a primary or secondary amine group for forming an undercoat layer in a laminate according to any one of claims 1 to 6. A laminate comprising: The fluororesin layer has a first side coated with a compound containing an acrylic polymer, and the acrylic polymer contains a plurality of primary or secondary amine groups.