WO2014162480A1 - Composition de scellement, verre multicouche et panneau solaire - Google Patents

Composition de scellement, verre multicouche et panneau solaire Download PDF

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Publication number
WO2014162480A1
WO2014162480A1 PCT/JP2013/059988 JP2013059988W WO2014162480A1 WO 2014162480 A1 WO2014162480 A1 WO 2014162480A1 JP 2013059988 W JP2013059988 W JP 2013059988W WO 2014162480 A1 WO2014162480 A1 WO 2014162480A1
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WIPO (PCT)
Prior art keywords
sealing
layer
glass
sealing composition
solar cell
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PCT/JP2013/059988
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English (en)
Japanese (ja)
Inventor
康 武蔵島
真一郎 小瀬
哲朗 多賀
浩喜 藤井
Original Assignee
日東電工株式会社
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Priority to PCT/JP2013/059988 priority Critical patent/WO2014162480A1/fr
Publication of WO2014162480A1 publication Critical patent/WO2014162480A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K3/00—Materials not provided for elsewhere
    • C09K3/10—Materials in mouldable or extrudable form for sealing or packing joints or covers
    • C09K3/1006—Materials in mouldable or extrudable form for sealing or packing joints or covers characterised by the chemical nature of one of its constituents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
    • B32B17/10036—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising two outer glass sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10165—Functional features of the laminated safety glass or glazing
    • B32B17/10293—Edge features, e.g. inserts or holes
    • B32B17/10302—Edge sealing
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C27/00—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing
    • C03C27/06—Joining glass to glass by processes other than fusing
    • C03C27/10—Joining glass to glass by processes other than fusing with the aid of adhesive specially adapted for that purpose
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/042—PV modules or arrays of single PV cells
    • H01L31/048—Encapsulation of modules
    • H01L31/0488—Double glass encapsulation, e.g. photovoltaic cells arranged between front and rear glass sheets
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2200/00—Chemical nature of materials in mouldable or extrudable form for sealing or packing joints or covers
    • C09K2200/06—Macromolecular organic compounds, e.g. prepolymers
    • C09K2200/0607—Rubber or rubber derivatives
    • C09K2200/061—Butyl rubber
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2200/00—Chemical nature of materials in mouldable or extrudable form for sealing or packing joints or covers
    • C09K2200/06—Macromolecular organic compounds, e.g. prepolymers
    • C09K2200/0615—Macromolecular organic compounds, e.g. prepolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C09K2200/0617—Polyalkenes
    • C09K2200/062—Polyethylene
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy

Definitions

  • the present invention relates to a sealing composition, a multilayer glass and a solar cell panel, and more specifically, a sealing composition used for sealing various industrial products, and a multilayer glass and a solar whose ends are sealed with the sealing composition. It relates to a battery panel.
  • a sealing material for example, a sealing material containing polyisobutylene having a viscosity average molecular weight of 50,000 to 90,000 and an inorganic filler has been proposed (for example, see Patent Document 1). Moreover, in patent document 1, using a sealing material for a solar panel is proposed.
  • JP 2006-117758 A Japanese Patent Laid-Open No. 10-110072
  • the sealing material proposed in Patent Document 1 and the sealing agent composition proposed in Patent Document 2 have insufficient water vapor barrier properties, the solar panel provided in the solar panel is used when sealing the solar panel. There is a problem that the electronic element cannot be sufficiently prevented from being deteriorated by water vapor, so that the performance of the solar cell panel is lowered.
  • An object of the present invention is to provide a sealing composition excellent in shape following property and water vapor barrier property at room temperature, thereby easily and efficiently sealing various industrial products, in particular, end portions of multi-layer glass and solar cell panels.
  • Another object of the present invention is to provide a multilayer glass and a solar cell panel having excellent reliability.
  • the sealing composition of the present invention is a sealing composition comprising a rubber component and a polyolefin obtained by polymerizing an alkene having 2 to 3 carbon atoms.
  • the 90 ° peel adhesion when peeled at 90 ° to the glass plate at a speed of 300 mm / min is 0.1 N / 10 mm or more
  • the 90 ° peel adhesive strength when peeled at 90 ° from the glass plate at a speed of 300 mm / min is 2N / 10 mm or more.
  • the sealing composition of the present invention further contains a tackifier, the tackifier contains a coumarone resin having a softening point of 90 to 140 ° C., and the blending ratio of the tackifier is the rubber. It is preferable that it exceeds 30 mass parts with respect to 100 mass parts of total amounts of a component and the said polyolefin.
  • the rubber component contains butyl rubber and polyisobutylene.
  • the sealing composition of the present invention further contains a filler, and the blending ratio of the filler is 0.1 to 100 parts by mass with respect to 100 parts by mass of the total amount of the rubber component and the polyolefin. Is preferred.
  • the filler is at least one selected from the group consisting of calcium carbonate, talc, titanium oxide and carbon black.
  • the sealing composition of the present invention is used for sealing an end portion of a multilayer glass.
  • the multilayer glass of the present invention is provided between two glass layers arranged at intervals in the thickness direction and the two glass layers, and is arranged inside an end portion of the glass layer.
  • a sealing material made of a sealing composition filled so as to seal the intermediate layer between end portions of the two glass layers, and the sealing composition is tackified
  • the tackifier further includes a coumarone resin having a softening point of 90 to 140 ° C., and the blending ratio of the tackifier is 100 parts by mass with respect to the total amount of the rubber component and the polyolefin. More than 30 parts by mass.
  • the sealing composition of the present invention is preferably used for sealing an end portion of a solar cell panel.
  • the solar cell panel of the present invention is provided between the glass layer, the glass layer and the support layer disposed at a distance in the thickness direction, the glass layer and the support layer, the glass layer and the glass layer
  • the sealing resin layer is sealed between the solar cell element disposed inside the end portion of the support layer and the sealing resin layer sealing the solar cell element, and the end portions of the glass layer and the support layer.
  • a sealing material comprising a sealing composition filled in, the sealing composition further containing a tackifier, the tackifier containing a coumarone resin having a softening point of 90 to 140 ° C,
  • the blending ratio of the tackifier exceeds 30 parts by mass with respect to 100 parts by mass of the total amount of the rubber component and the polyolefin.
  • the sealing material comprising the sealing composition of the present invention is excellent in shape followability at room temperature, it can be easily and reliably attached to various industrial products, particularly multilayer glass and solar cell panels at room temperature. .
  • this sealing composition is excellent in adhesiveness after being heated at a high temperature, it is excellent in them by being stuck (temporarily fixed) to the double-glazed glass and the solar cell panel and then heated at a high temperature.
  • Water vapor barrier properties can be imparted. Therefore, the fall of the performance of a multilayer glass and a solar cell panel can be prevented effectively, and the outstanding reliability can be provided.
  • FIG. 1 shows a cross-sectional view of an embodiment of a sealing material comprising the sealing composition of the present invention.
  • FIG. 2 is a process diagram for explaining a method of adhering a test piece to a glass plate in a 90-degree peel adhesion test, and FIG. 2 (a) is a process of lining a sealing material with a lining material, FIG. (B) shows the process of sticking a test piece on a glass plate.
  • FIG. 3 is an embodiment of the multi-layer glass of the present invention (an embodiment comprising four sealing materials), FIG. 3 (a) is a cross-sectional view, and FIG. 3 (b) is a plan view of FIG. (C) shows a partially cutaway cross-sectional perspective view.
  • FIG. 4A and 4B are process diagrams for explaining a method of manufacturing the multi-layer glass shown in FIG. 3A.
  • FIG. 4A is a process for preparing an upper glass layer
  • FIG. 4B is a sealing process.
  • FIG. 4C shows the step of arranging the sealing material
  • FIG. 4D shows the step of arranging the lower glass layer.
  • FIG. 5 shows a plan view of a solar cell module (a mode in which a single sealing material is formed).
  • 6A and 6B show an embodiment of the solar cell panel of the present invention.
  • FIG. 6A is a cross-sectional view
  • FIG. 6B is a plan view
  • FIG. The figure is shown.
  • FIG. 7A and 7B are process diagrams for explaining a method of manufacturing the solar cell panel shown in FIG. 6A, in which FIG. 7A is a step of preparing an upper glass layer, and FIG. 7B is a solar cell.
  • FIG. 7 (c) shows the step of arranging the sealing resin layer
  • FIG. 7 (d) shows the step of arranging the sealing material
  • FIG. 7 (e) shows the arrangement of the lower glass layer.
  • FIG. 8 shows a partially enlarged cross-sectional view of a frameless solar cell module (a frameless solar cell module provided with a second sealing material) including the solar cell panel shown in FIG. 6.
  • FIG. 9 is an explanatory diagram of a solar cell module (solar cell module provided with a frame) including the solar cell panel shown in FIG. 6, and FIG. 9A is a partially enlarged cross-sectional view, and FIG. ) Shows a partial cross-sectional perspective view.
  • FIG. 10 shows a cross-sectional view of a measuring apparatus used for evaluating the
  • the sealing composition of the present invention is used for sealing various industrial products and contains a rubber component and a specific polyolefin (excluding polyisobutylene described later).
  • the rubber component is contained in order to impart elasticity to the sealing material made of the sealing composition.
  • rubber components include acrylic rubber, silicone rubber, urethane rubber, vinyl alkyl ether rubber, polyvinyl alcohol rubber, polyvinyl pyrrolidone rubber, polyacrylamide rubber, cellulose rubber, natural rubber, butadiene rubber, chloroprene rubber, styrene / butadiene rubber, Examples include acrylonitrile / butadiene rubber, styrene / ethylene / butadiene / styrene rubber, styrene / isoprene / styrene rubber, isoprene rubber, styrene / butadiene / styrene rubber, butyl rubber, and polyisobutylene rubber.
  • the rubber component is preferably butyl rubber or polyisobutylene.
  • rubber components can be used alone or in combination of two or more.
  • butyl rubber and polyisobutylene are used in combination.
  • Butyl rubber is a copolymer of isobutene (isobutylene) and a small amount of isoprene (isobutylene / isoprene rubber), and is a rubber elastic body having a high water vapor barrier property.
  • the degree of unsaturation of butyl rubber is, for example, 0.6 to 2.5 mol%, preferably 0.7 to 2.0 mol%.
  • the degree of unsaturation of butyl rubber is measured by the iodine adsorption method.
  • the Mooney viscosity of butyl rubber is, for example, 20 to 70 (ML 1 + 8 , 125 ° C.), preferably 30 to 60 (ML 1 + 8 , 125 ° C.).
  • Butyl rubber has a viscosity average molecular weight of, for example, 300,000 to 700,000, preferably 300,000 to 500,000.
  • Viscosity average molecular weight is measured by size exclusion chromatography (SEC) using standard polystyrene according to JIS K 7252 01 (2008). The same applies to the viscosity average molecular weight described later.
  • Polyisobutylene is a polymer of isobutylene, for example, high molecular weight polyisobutylene having a viscosity average molecular weight of 300,000 or more.
  • polyisobutylene in combination with butyl rubber, it is possible to improve (improve) the flowability of butyl rubber at high temperatures, maintain excellent water vapor barrier properties, and improve temperature characteristics.
  • Polyisobutylene has a viscosity average molecular weight of preferably 500,000 to 3,000,000, more preferably 700 to 2,000,000, and particularly preferably 900,000 to 1,500,000.
  • the viscosity average molecular weight of the polyisobutylene is less than the above-mentioned range, dripping may occur when the multi-layer glass 3 or the solar cell panel 4 described later is assembled.
  • the blending ratio of butyl rubber and polyisobutylene is, for example, 9/1 to 1/6, preferably 4/1 to 1/3, based on their mass.
  • the blending ratio of the rubber component is, for example, 40 to 90 parts by mass, preferably 50 to 80 parts by mass with respect to 100 parts by mass of the total amount of the rubber component and the specific polyolefin. If the blending ratio of the rubber component is in the above range, there is an advantage that the water vapor barrier property is improved by maintaining rubber elasticity in a wide temperature range.
  • the specific polyolefin is a polyolefin obtained by polymerizing an alkene having 2 to 3 (2 and / or 3) carbon atoms, and specifically includes polyethylene, polypropylene, or ethylene / propylene copolymer.
  • polyethylene examples include low-density polyethylene such as linear low-density polyethylene, for example, medium-density polyethylene, for example, high-density polyethylene.
  • polypropylene examples include isotactic polypropylene and syndiotactic polypropylene.
  • Examples of the ethylene / propylene copolymer include an ethylene / propylene random copolymer and an ethylene / propylene block copolymer.
  • the specific polyolefin includes, for example, crystalline polyolefin (specifically, crystalline polyethylene and the like).
  • the softening point (ring and ball method) of the specific polyolefin is, for example, 100 to 150 ° C., preferably 110 to 140 ° C.
  • the specific polyolefin is preferably polyethylene, and more preferably crystalline polyethylene.
  • the blending ratio of the specific polyolefin is, for example, 10 to 60 parts by mass, preferably 20 to 50 parts by mass with respect to 100 parts by mass of the total amount of the rubber component and the specific polyolefin. If the blending ratio of the polyolefin is less than the above range, the reinforcing property of the reeling material at room temperature may not be sufficient.
  • a tackifier and / or a filler can be blended in the sealing composition.
  • the tackifier is contained in the sealing composition in order to improve the peel adhesion (described later) at 25 ° C. and 150 ° C. of the sheet formed from the sealing composition.
  • the tackifier include petroleum resins such as hydrocarbon resins such as C5-hydrocarbon resins, phenol resins, rosin resins, terpene resins, and coumarone resins.
  • the tackifier is preferably a hydrocarbon resin, and more preferably a coumarone resin.
  • coumarone resins examples include coumarone resins and coumarone-indene resins (including coumarone-indene-styrene copolymers).
  • coumarone-indene resin is used.
  • the softening point of the coumarone-based resin is, for example, 90 to 140 ° C, preferably 100 to 130 ° C.
  • the softening point of the coumarone resin is calculated as a deflection temperature under load measured according to JIS K6911 (1995).
  • tackifiers can be used alone or in combination of two or more.
  • the blending ratio of the tackifier is, for example, more than 30 parts by weight, preferably 35 parts by weight or more, more preferably 40 parts by weight or more, particularly preferably 100 parts by weight of the total amount of the rubber component and the specific polyolefin. Is 45 parts by mass or more, for example, 100 parts by mass or less, preferably 80 parts by mass or less, and more preferably 60 parts by mass or less.
  • the blending ratio of the tackifier is less than the above lower limit, sufficient water vapor barrier properties may not be obtained.
  • the sealing material may become brittle.
  • the filler is contained in the sealing composition as a reinforcing agent for improving the reinforcing property of the sealing material.
  • the filler include inorganic fillers such as pigments (for example, inorganic pigments).
  • pigments for example, inorganic pigments.
  • calcium carbonate for example, heavy calcium carbonate or light calcium carbonate
  • talc titanium oxide
  • carbon black examples thereof include black, silica, and magnesium oxide.
  • the filler is preferably calcium carbonate, talc, titanium oxide, carbon black, more preferably carbon black.
  • ⁇ Fillers can be used alone or in combination of two or more. Preferably, carbon black is used alone.
  • the average particle diameter of the filler is, for example, 1 nm to 1000 ⁇ m, preferably 10 nm to 100 ⁇ m.
  • the compounding ratio of the filler is, for example, 0.1 to 100 parts by mass, preferably 0.5 to 10 parts by mass with respect to 100 parts by mass of the total amount of the rubber component and the specific polyolefin. If the blending ratio of the filler is in the above range, the reinforcing property can be improved.
  • the sealing composition may contain, for example, a softening agent, a hygroscopic compound (for example, silica gel, alumina, zeolite, etc.), an antioxidant (hindered phenol), a lubricant, an anti-aging agent, an antistatic agent.
  • a softening agent for example, silica gel, alumina, zeolite, etc.
  • an antioxidant hindered phenol
  • a lubricant for example, silica gel, alumina, zeolite, etc.
  • An additive such as an agent, a plasticizer, a heat stabilizer, a silane coupling agent (for example, a hydrolyzable silyl group-containing compound), and a foaming agent can be added at an appropriate ratio.
  • Softener is contained in the sealing material as necessary in order to improve the handleability of the sealing material.
  • the softening agent include low molecular weight polyisobutylene, liquid polybutene, oils (eg, process oil), paraffins, waxes, aromas, asphalts, drying oils, animal and vegetable oils, and the like.
  • the softening agent is preferably low molecular weight polyisobutylene.
  • the viscosity average molecular weight of the low molecular weight polyisobutylene is, for example, less than 300,000, preferably 1 to 250,000, and more preferably 30,000 to 60,000.
  • These softeners can be used alone or in combination of two or more.
  • the blending ratio of the softener is, for example, 0.5 to 30 parts by mass, preferably 1 to 25 parts by mass with respect to 100 parts by mass of the total amount of the rubber component and the specific polyolefin.
  • the handleability of the sealing material can be improved.
  • the sealing composition of the present invention can be obtained as a kneaded product by blending the above-described components in the above proportions, heating and kneading.
  • kneading for example, a batch kneader such as a kneader, a Banbury mixer, a mixing roll, or a continuous kneader such as a biaxial kneader is used.
  • the heating temperature in the kneading is, for example, 70 to 130 ° C, preferably 90 to 120 ° C.
  • the sealing composition thus obtained can be molded into an appropriate shape to obtain a sealing material.
  • FIG. 1 shows a cross-sectional view of an embodiment of a sealing material comprising the sealing composition of the present invention
  • FIG. 2 is a process for explaining a method for adhering a test piece to a glass plate in a 90-degree peel adhesion test. The figure is shown.
  • the sealing composition obtained above is heated, for example, by a molding apparatus such as an extruder, a calender roll, or a press machine (heat press machine) to be molded into a sheet shape, for example, to obtain a sheet.
  • a molding apparatus such as an extruder, a calender roll, or a press machine (heat press machine) to be molded into a sheet shape, for example, to obtain a sheet.
  • the obtained sheet is laminated on the surface of the release film 2.
  • a molding apparatus such as an extruder, a calender roll, or a press machine (heat press machine)
  • a press machine heat press machine
  • the obtained sheet is laminated on the surface of the release film 2.
  • an extruder and a calender roll are used as the molding device, and more preferably a calender roll is used.
  • the sheet includes a tape and / or a film.
  • the release film 2 examples include known release films such as a synthetic resin film such as a polyethylene film, a polypropylene film, and a polyethylene terephthalate (PET) film.
  • the thickness of the release film 2 is, for example, 1 to 1000 ⁇ m.
  • a release treatment may be performed on the surface of the release film 2.
  • the sealing material 1 is formed in a long and wide flat strip shape extending in the longitudinal direction.
  • the thickness of the sealing material 1 is appropriately selected depending on the dimensions of the intermediate layer 6 and the sealing resin layer 9, as shown in FIGS. 4D and 7E, and is, for example, 0.3 to 2.0 mm.
  • the thickness is preferably 0.4 to 1.0 mm.
  • the width of the sealing material 1 (the length in the direction perpendicular to the longitudinal direction) is, for example, 5 to 30 mm, preferably 10 to 20 mm.
  • the release film 2 can be laminated
  • times with respect to a glass plate is 0.1 N / 10mm or more.
  • the above 90 degree peel adhesion is measured as follows.
  • the backing material 31 is formed on the back surface 33 of the sealing material 1 (the opposite side surface to the surface 34 on which the release film 2 is laminated, the upper surface in FIG. 2A).
  • the sealing material 1 is backed by the backing material 31 after being laminated.
  • the backing material 31 examples include resin films such as polyethylene film, polypropylene film, and PET film, and metal foil such as copper foil.
  • the thickness of the backing material 31 is, for example, 1 to 1000 ⁇ m.
  • the sealing material 1 is cut out to a width of 10 mm to produce a strip-shaped test piece 30.
  • the release film 2 is peeled off from the test piece 30, and then the release film 2 is peeled off at 25 ° C. as shown in FIG. 2B.
  • the test piece 30 and the glass plate 32 are placed so that the surface 34 (the reverse side with respect to the back surface 33 on which the backing material 31 is laminated, the lower surface in FIG. 2B) is in contact with the surface 35 of the glass plate 32. Overlapping. Thereafter, the test piece 30 is adhered to the glass plate 32 by loading a predetermined weight at 25 ° C., for example.
  • the surface roughness Rz (ten-point average roughness according to JIS B0601-1994) of the surface 35 of the glass plate 32 is, for example, in the range of 0.01 to 10 ⁇ m.
  • test piece 30 and the glass plate 32 are left at 25 ° C., for example, for 10 to 60 minutes, and then set in a tensile tester. Then, the peeling adhesive force when the test piece 30 peels from the glass plate 32 at a speed of 300 mm / min at an angle of 90 degrees with respect to the glass plate 32 at 25 ° C. is measured.
  • the 90-degree peel adhesive strength described above is preferably 0.15 N / 10 mm or more, more preferably 0.25 N / 10 mm or more, particularly preferably 0.40 N / 10 mm or more, and 2.0 N / 10 mm. Is also less.
  • the peel adhesive strength when peeled at 90 ° from the glass plate 32 at a speed of 300 mm / min is 2N / 10 mm or more.
  • the above 90 degree peel adhesion is measured as follows.
  • the test piece 30 is attached to the glass plate 32 at 25 ° C., and the heating step and the cooling step are sequentially performed after the attachment, After being attached to the glass plate 32 at 25 ° C., the treatment is performed in the same manner as the 90 ° peel adhesive strength when peeled at 90 ° from the glass plate 32 at a speed of 300 mm / min.
  • the test piece 30 adhered to the glass plate 32 is heated by, for example, a vacuum hot press.
  • the test piece 30 is thermocompression-bonded to the glass plate 32 by hot pressing at 150 ° C. in a vacuum atmosphere, for example, at a pressure of 0.05 to 0.5 MPa for 1 to 60 minutes.
  • test piece 30 after thermocompression bonding is allowed to cool, for example, for 10 minutes to 48 hours.
  • the 90-degree peel adhesion described above is preferably 3 N / 10 mm or more, more preferably 4 N / 10 mm or more, particularly preferably 8 N / 10 mm or more, and most preferably 15 N / 10 mm or more, and 100 N / It is also 10 mm or less.
  • sealing material 1 obtained in this way is used for sealing of various industrial products.
  • it is used for sealing multi-layer glass and solar cell panels.
  • FIG. 3 shows an embodiment of the multilayer glass of the present invention (an embodiment comprising four sealing materials), and FIG. 4 shows a process chart for explaining the method for producing the multilayer glass shown in FIG.
  • FIG. 3B the upper glass layer 10 is omitted to clearly show the relative arrangement of the sealing material 1.
  • this multi-layer glass 3 is provided between the upper glass layer 10 and the lower glass layer 11 as two glass layers arranged at intervals in the thickness direction, An intermediate layer 6 disposed inside the peripheral end portion 5 of the glass layer 10 and the lower glass layer 11, and a sealing material 1 filled between the peripheral end portions 5 of the upper glass layer 10 and the lower glass layer 11, It has.
  • the upper glass layer 10 is provided on the outermost surface (upper surface) side of the multilayer glass 3 and is formed in a substantially rectangular shape in plan view.
  • the thickness of the upper glass layer 10 is, for example, 0.5 to 3.2 mm.
  • the lower glass layer 11 is provided on the outermost back surface (lower surface) side of the multilayer glass 3, and is formed in a substantially rectangular shape having the same size as the upper glass layer 10 in a plan view.
  • the thickness of the lower glass layer 11 is, for example, 0.5 to 3.2 mm.
  • the intermediate layer 6 is formed in a substantially rectangular shape smaller than the upper glass layer 10 and the lower glass layer 11 in plan view.
  • the material for forming the intermediate layer 6 is a material for forming the sealing resin layer 9 (described later).
  • the material is not particularly limited, and specifically, an ethylene-vinyl acetate copolymer (EVA), polyvinyl butyral ( PVB) and polyvinylidene fluoride resins.
  • EVA ethylene-vinyl acetate copolymer
  • PVB polyvinyl butyral
  • the thickness of the intermediate layer 6 is, for example, 0.3 to 1.0 mm.
  • the sealing material 1 seals the intermediate layer 6. Further, as shown in FIG. 3 (b), the sealing material 1 comes into contact with two vertical sealing materials 13 having a substantially rectangular shape in plan view extending long in the vertical direction, and both longitudinal ends of each vertical sealing material 13. And two horizontal sealing members 14 having a substantially rectangular shape in plan view extending long in the horizontal direction.
  • the vertical sealing material 13 is filled between the thickness directions of both lateral ends of the upper glass layer 10 and the lower glass layer 11.
  • the horizontal sealing material 14 is filled between the thickness directions of both longitudinal ends of the upper glass layer 10 and the lower glass layer 11.
  • an upper glass layer 10 is prepared.
  • the sealing resin layer 9 as the intermediate layer 6 is disposed on the lower surface of the upper glass layer 10.
  • the sealing resin layer 9 is disposed so that the peripheral end of the upper glass layer 10 is exposed.
  • the thickness T1 of the sealing resin layer 9 is set to, for example, 0.3 to 2.0 mm, preferably 0.4 to 1.0 mm.
  • the sealing material 1 including the vertical sealing material 13 and the horizontal sealing material 14 shown in FIG. 3B is attached (temporarily fixed) in the above-described arrangement. If necessary, the sealing material 1 is disposed (heat-sealed) while being melted.
  • the thickness T2 of the sealing material 1 is set to be, for example, thick or the same thickness as the thickness T1 of the sealing resin layer 9 (sealing resin layer 9 before pressure bonding), specifically, 100 to 200%, preferably 105 to 120%. More specifically, the thickness T2 of the sealing material 1 is, for example, 0.3 to 2.0 mm, preferably 0.4 to 1.0 mm.
  • the thickness T2 of the sealing material 1 exceeds the above range, workability at the time of bonding to the lower glass layer 11 is reduced, or gas generated from the sealing resin layer 9 (for example, acetic acid gas generated from EVA) ) And / or air may not escape and bubbles may remain in the sealing resin layer 9.
  • gas generated from the sealing resin layer 9 for example, acetic acid gas generated from EVA
  • the thickness of the sealing material 1 is less than the above range, the sealing performance of the peripheral end portion 5 of the multilayer glass 3 may not be sufficiently secured.
  • the lower glass layer 11 In order to adhere the lower glass layer 11 to the sealing resin layer 9 and the sealing material 1, the lower glass layer 11 is brought into contact with the lower surface of the sealing material 1, and the lower glass layer 11 is crimped upward. To do.
  • the pressure bonding include thermocompression bonding as necessary.
  • the pressure bonding conditions are normal temperature or a heated atmosphere, and the pressure is, for example, 0.05 to 0.5 MPa, preferably 0.05 to 0.2 MPa, and the pressure bonding time is preferably 1 to 60 minutes, for example. Is 10 to 30 minutes.
  • the temperature is, for example, 100 to 180 ° C., preferably 110 to 160 ° C.
  • the thickness T3 of the sealing material 1 after pressure bonding and the thickness T1 of the sealing resin layer 9 are substantially the same.
  • the multi-layer glass 3 in which the peripheral end portion 5 is filled with the sealing material 1 can be obtained.
  • the above-mentioned sealing material 1 is excellent in shape followability at normal temperature (for example, 20 to 30 ° C.), it can be easily and reliably attached to the multilayer glass 3 at normal temperature.
  • the sealing material 1 is excellent in adhesion after being heated at a high temperature (for example, 100 to 160 ° C.), the sealing material 1 is adhered to the multi-layer glass 3 and then heated at a high temperature. , They can be imparted with an excellent water vapor barrier property.
  • the water vapor barrier property of the sealing material 1 measured by the examples described later is, for example, 2.0% or less, preferably 1.5% or less, more preferably 1.0% or less, Preferably, it is 0.5% or less, most preferably 0.3%, and it is also 0% or more.
  • the intermediate layer 6 is formed as a resin layer (sealing resin layer 9) made of a resin.
  • resin layer 9 is formed as an air layer made of air or an inert gas (for example, nitrogen).
  • inert gas for example, nitrogen
  • vacuum layer in a vacuum state (or reduced pressure state).
  • FIG. 5 shows a plan view of a solar cell module (a mode in which a single sealing material is formed).
  • the sealing material 1 is formed of four sealing materials having a substantially rectangular shape in plan view (two vertical sealing materials 13 and two horizontal sealing materials 14). For example, FIG. As shown, it can also be formed from a single sealing material.
  • the sealing material 1 can be obtained, for example, by forming it into a substantially rectangular shape in plan view using the above-described molding apparatus, and then punching the center (vertical center and lateral center), although not shown.
  • FIG. 6 is an embodiment of the solar cell panel of the present invention
  • FIG. 7 is a process diagram for explaining a method for producing the solar cell panel shown in FIG. 6A
  • FIG. 8 is a diagram of the solar cell panel shown in FIG.
  • FIG. 9 is a partially enlarged cross-sectional view of a frameless solar cell module provided (a frameless solar cell module provided with a second sealant)
  • FIG. 9 is a solar cell module provided with a solar cell panel shown in FIG. Explanatory drawing of a solar cell module) is shown.
  • the solar cell panel 4 includes an upper glass layer 10 as a glass layer, a lower glass layer 11 as a support layer disposed at a distance from the upper glass layer 10, and an upper glass layer 10. And the solar cell element 8 disposed between the upper glass layer 10 and the peripheral end portion 5 of the lower glass layer 11 and the sealing resin layer 9 that seals the solar cell element 8 provided between the lower glass layer 11 and the lower glass layer 11; And a sealing material 1 filled between the peripheral end portions 5 of the upper glass layer 10 and the lower glass layer 11.
  • Examples of the solar cell element 8 include known solar cell elements such as crystalline silicon type and amorphous silicon type.
  • the solar cell element 8 has a substantially rectangular flat plate shape, and is disposed at the center of the upper glass layer 10 and the lower glass layer 11 in plan view.
  • the solar cell element 8 is laminated on the lower surface of the upper glass layer 10.
  • the thickness of the solar cell element 8 is smaller than the thickness of the sealing resin layer 9, specifically, for example, 0.01 to 500 ⁇ m.
  • Sealing resin layer 9 seals solar cell element 8.
  • the sealing material 1 seals the sealing resin layer 9.
  • the solar cell element 8 is disposed on the lower surface of the upper glass layer 10.
  • the sealing resin layer 9 is disposed.
  • the sealing resin layer 9 is disposed so as to cover the solar cell element 8 and to expose the peripheral end portion of the upper glass layer 10.
  • the sealing material 1 is attached (temporarily fixed).
  • the lower glass layer 11 In order to adhere the lower glass layer 11 to the sealing resin layer 9 and the sealing material 1, the lower glass layer 11 is brought into contact with the lower surface of the sealing material 1, and the lower glass layer 11 is crimped upward. To do.
  • pressure bonding for example, pressure bonding is performed under vacuum (reduced pressure).
  • This solar cell panel 4 can effectively prevent a decrease in power generation efficiency due to degradation of the solar cell element 8 in addition to the above-described effects of the multilayer glass 3.
  • the support layer of the present invention is described as the lower glass layer 11.
  • it may be formed as the lower resin layer (back sheet) 11 made of a resin such as a moisture permeable resin. it can.
  • FIG. 6 can be used as a frameless solar cell module 12 that does not use a frame, or can be used as a solar cell module 7 that uses a frame, as shown in FIG. .
  • the frameless solar cell module 12 is used as a frameless solar cell module 12 in which a known sealing material (second sealing material) 15 is provided on the peripheral end portion 5 of the solar cell panel 4. You can also.
  • the second sealing material 15 is formed in a substantially U-shaped cross section that opens toward the inside of the solar cell panel 4 at the peripheral end 5 of the solar cell panel 4, and the peripheral side surface of the upper glass layer 10 And the upper surface, the peripheral side surface of the first sealing material 1, and the peripheral side surface and the lower surface of the lower glass layer 11.
  • the solar cell module 7 includes a solar cell panel 4, a frame 16 provided at the peripheral end 5 of the solar cell panel 4, and a second sealing material 15 interposed therebetween. .
  • the frame 16 is provided along each side of the solar cell panel 4.
  • the frame 16 is formed in a substantially U-shaped cross section that opens inward toward the solar cell panel 4.
  • the frame 16 is formed of, for example, a metal material (such as aluminum) or a resin material (such as acrylic resin), and is preferably formed of a metal material.
  • the frame 16 is assembled so that both ends in the longitudinal direction along each side are joined together to form four corners and form a substantially rectangular frame shape in plan view.
  • Examples 1 to 3 and Comparative Example 1 According to the formulation of Table 1, the ingredients listed in Table 1 are all added to a kneader (DS1-5GHB-E type, 1L kneader, with 6-inch open roll, manufactured by Moriyama Co., Ltd.) and kneaded at 120 ° C. The sealing composition was prepared as a kneaded product.
  • a kneader D1-5GHB-E type, 1L kneader, with 6-inch open roll, manufactured by Moriyama Co., Ltd.
  • the obtained kneaded product is rolled and formed with a calender roll (calendar roll 4L-8a, manufactured by Hitachi, Ltd.) to a thickness of 0.5 mm and a thickness of 1.0 mm, respectively, so that a sealing material made of a sealing composition is obtained. Obtained.
  • the rolling conditions of the calender roll are as follows: the roll temperature is adjusted to 30 to 90 ° C., and the ratio of the downstream roll (R ′) arranged downstream in the transport direction with respect to the roll speed (R) of the upstream roll (R ′ / R) was adjusted to 1.1.
  • Double-sided pressure-sensitive adhesive tape comprising an acrylic foam layer, an acrylic adhesive layer laminated on both surfaces (front and back) of the acrylic foam layer, and a release film laminated on the surface of one acrylic pressure-sensitive adhesive layer (product)
  • the name “Hyper Joint H9008” (manufactured by Nitto Denko Corporation, thickness 0.8 mm) was prepared as a sealing material of Comparative Example 2.
  • JSR BUTYL # 065 Butyl rubber, degree of unsaturation 0.8 mol%, Mooney viscosity 32 (ML 1 + 8 , 125 ° C.), JSR Opanol B-100EP: high molecular weight polyisobutylene, viscosity average molecular weight 1.1 million, BASF DFD -2005: Crystalline polyethylene, Nihon Unicar Co., Ltd.
  • Escron V-120 Coumarone-indene-styrene copolymer, softening point (deflection temperature under load) 120 ° C, Nikko Chemical's seast 3H: Carbon black, average particle size 27 nm Tetrax 4T manufactured by Tokai Carbon Co., Ltd .: Low molecular weight polyisobutylene, viscosity average molecular weight 40,000, JX Nippon Mining & Energy Corporation Tetrax 5T: Low molecular weight polyisobutylene, viscosity average molecular weight 50,000, manufactured by JX Nippon Mining & Energy Corporation ( Evaluation) About the sealing material obtained by each Example and each comparative example, (1) 90 degree
  • a backing material 31 (surface is not peeled) 31 made of a PET film having a thickness of 38 ⁇ m is laminated on the back surface 33 of the sealing material 1, and the backing material 31 Sealing material 1 was lined.
  • the sealing material 1 was cut out to a width of 10 mm to produce a strip-shaped test piece 30.
  • the release film 2 is peeled off from the test piece 30, and then, as shown in FIG.
  • the test piece 30 and the glass plate 32 are superposed so as to contact the surface 35 (surface roughness Rz: 0.06 ⁇ m) of the glass plate 32 made of 3.2 mm thick white plate unreinforced glass (manufactured by AGC). It was.
  • test piece 30 was adhered to the glass plate 32 by reciprocating once with a 2 kg roller at 25 ° C.
  • test piece 30 and the glass plate 32 were left at 25 ° C. for 30 minutes, and then placed on a tensile tester. Next, the peel adhesion force when the test piece 30 was peeled off at a speed of 300 mm / min with respect to the glass plate 32 at an angle of 90 degrees with respect to the glass plate 32 was measured.
  • Comparative Example 1 since the sealing material was a hot-melt type, it could not be adhered to the glass plate 32 at 25 ° C., and therefore the 90 ° peel adhesive strength could not be measured.
  • the sealing material of Examples 1 to 3 and Comparative Example 1 having a thickness of 0.5 mm and the sealing material of Comparative Example 2 were glass plates 32 at 25 ° C. Except that the heating step and the cooling step were sequentially carried out after the sticking, after sticking to the glass plate 32 at 25 ° C., when peeling to the glass plate 32 at 90 degrees and a speed of 300 mm / min. It processed similarly to 90 degree
  • the test piece 30 was hot-pressed to the glass plate 32 by being hot-pressed at 150 ° C. for 10 minutes in a vacuum atmosphere with a vacuum heating press.
  • test piece 30 after thermocompression bonding was allowed to cool for 24 hours.
  • the measuring device 20 includes a bottomed cylindrical cup 22 provided with a ring-shaped ridge 21 at its upper end, and a glass plate 23 that is disposed to face the ridge 21 with a gap in the thickness direction. It has.
  • the cup 22 is made of aluminum, and the depth of the bottom wall 24 is 15 mm and the inner diameter is 60 mm.
  • a hygroscopic agent 25 is uniformly laminated on the upper surface of the bottom wall 24 of the cup 22.
  • the hygroscopic agent 25 is made of calcium chloride and has a mass of 10 g.
  • the water vapor barrier property% is shown as a mass increase rate of the whole measuring device 20 after humidification with respect to the whole mass of the measuring device 20 before humidification.
  • the sealing composition is used for sealing the edge of the multilayer glass and the edge of the solar cell panel.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Photovoltaic Devices (AREA)
  • Sealing Material Composition (AREA)

Abstract

Cette composition de scellement contient un composant de caoutchouc et une polyoléfine obtenue par polymérisation d'alcènes avec deux à trois atomes de carbone. La composition de scellement comprend : un adhésif pelliculable à 90 degrés d'au moins 0,1 N/10 mm lorsqu'il est décollé à une vitesse de 300 mm/minute à 90 degrés sur un substrat de verre après qu'une feuille, formée à partir de la composition de scellement, ait été fixée au substrat de verre à 25 °C; et un adhésif pelliculable à 90 degrés d'au moins 2 N/10 mm lorsqu'il est décollé à une vitesse de 300 mm/minute à 90 degrés sur un substrat de verre après qu'une feuille ait été fixée au substrat de verre à 150°C.
PCT/JP2013/059988 2013-04-01 2013-04-01 Composition de scellement, verre multicouche et panneau solaire WO2014162480A1 (fr)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3203533A1 (fr) * 2016-02-03 2017-08-09 ML SYSTEM Spólka Akcyjna Module photovoltaïque stratifié thermiquement isolant

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6197378A (ja) * 1984-10-18 1986-05-15 Toyoda Gosei Co Ltd エアダクト用シ−ラント
JP2011231309A (ja) * 2010-04-09 2011-11-17 Nitto Denko Corp シーリング組成物、複層ガラスおよび太陽電池パネル

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6197378A (ja) * 1984-10-18 1986-05-15 Toyoda Gosei Co Ltd エアダクト用シ−ラント
JP2011231309A (ja) * 2010-04-09 2011-11-17 Nitto Denko Corp シーリング組成物、複層ガラスおよび太陽電池パネル

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3203533A1 (fr) * 2016-02-03 2017-08-09 ML SYSTEM Spólka Akcyjna Module photovoltaïque stratifié thermiquement isolant

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