WO2014162481A1 - Composition d'étanchéité, verre multicouche, et panneau solaire - Google Patents

Composition d'étanchéité, verre multicouche, et panneau solaire Download PDF

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Publication number
WO2014162481A1
WO2014162481A1 PCT/JP2013/059989 JP2013059989W WO2014162481A1 WO 2014162481 A1 WO2014162481 A1 WO 2014162481A1 JP 2013059989 W JP2013059989 W JP 2013059989W WO 2014162481 A1 WO2014162481 A1 WO 2014162481A1
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Prior art keywords
sealing
sealing material
sealing composition
layer
solar cell
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PCT/JP2013/059989
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English (en)
Japanese (ja)
Inventor
哲朗 多賀
康 武蔵島
真一郎 小瀬
浩喜 藤井
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日東電工株式会社
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Priority to PCT/JP2013/059989 priority Critical patent/WO2014162481A1/fr
Publication of WO2014162481A1 publication Critical patent/WO2014162481A1/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, more specifically, a sealing composition used for sealing a solar cell panel, and a multilayer glass and a solar cell whose ends are sealed by the sealing composition. It relates to a battery panel.
  • a sealing material for example, a sealing material containing a 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 below). Moreover, in the following patent document 1, it is proposed to use a sealing material for a solar panel.
  • 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, they are provided in the solar panel when used for sealing solar panels. It is not possible to sufficiently prevent the solar electronic device from being deteriorated by water vapor, and there is a problem that the performance of the solar cell panel is lowered.
  • the sealing material may be heated after being attached to the solar panel in order to enhance the adhesion to the solar panel.
  • the sealing material proposed in Patent Document 1 and the sealing agent composition proposed in Patent Document 2 have a problem of protruding from the solar panel and contaminating the periphery of the solar panel.
  • the object of the present invention is to provide a sealing composition that can reliably retain the sheet shape, has an excellent water vapor barrier property, and can be adhered without contaminating the peripheral portion, thereby various industrial products.
  • An object of the present invention is to provide a multilayer glass and a solar cell panel excellent in reliability, in which the multilayer glass and the solar cell panel are simply and efficiently sealed.
  • the sealing composition of the present invention contains a rubber component and a polyolefin obtained by polymerizing an alkene having 2 to 3 carbon atoms, and is stored at 25 ° C. obtained from a dynamic viscoelasticity measurement at a frequency of 1 Hz and a shear mode.
  • the shear modulus is 1.0 ⁇ 10 5 Pa or more
  • the loss shear modulus at 150 ° C. obtained from the dynamic viscoelasticity measurement is 1.0 ⁇ 10 4 to 9.0 ⁇ 10 4 Pa. It is characterized by that.
  • the rubber component contains butyl rubber.
  • the rubber component contains butyl rubber and high molecular weight polyisobutylene having a viscosity average molecular weight of 300,000 or more.
  • 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. It is also preferable that 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 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.
  • the total amount of the components and the polyolefin is preferably 1 part by mass or more and less than 50 parts by mass with respect to 100 parts by mass.
  • the sealing composition of the present invention further contains a softener
  • the softener contains a low molecular weight polyisobutylene having a viscosity average molecular weight of less than 300,000
  • the blending ratio of the softener is the rubber component and the The amount is preferably 1 to 30 parts by mass with respect to 100 parts by mass of the total amount of polyolefin.
  • 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.
  • ⁇ is at 10 5 Pa or more, the loss shear modulus of 0.99 ° C. obtained from the dynamic viscoelasticity measurement, it is characterized in that a 1.0 ⁇ 10 4 ⁇ 9.0 ⁇ 10 4 Pa.
  • 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 the above-described sealing composition, the sealing composition containing a rubber component and a polyolefin obtained by polymerizing an alkene having 2 to 3 carbon atoms, having a frequency of 1 Hz
  • the storage shear modulus at 25 ° C. obtained from the dynamic viscoelasticity measurement in the shear mode is 1.0 ⁇ 10 5 Pa or more
  • the loss shear modulus at 150 ° C. obtained from the dynamic viscoelasticity measurement is 1 .0x10 4 to 9.0 ⁇ 10 4 Pa.
  • the sealing material made of the sealing composition of the present invention is excellent in handleability because it can reliably retain the sheet shape. Therefore, it can be simply and reliably attached to various industrial products, in particular, multi-layer glass and solar cell panels.
  • this sealant can effectively prevent protrusions due to heating after being attached to the multilayer glass and solar cell panel, it effectively prevents contamination to the peripheral part of the multilayer glass and solar cell panel. can do.
  • this sealing material can be uniformly adhered to the multilayer glass and the solar cell panel by heating in this way, it is heated after being attached (temporarily fixed) to the multilayer glass and the solar cell panel. By doing so, the outstanding water vapor
  • 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 an embodiment of the double-glazed glass of the present invention (an embodiment comprising four sealing materials),
  • FIG. 2 (a) is a sectional view,
  • FIG. 2 (b) is a plan view,
  • FIG. (C) shows a partially cutaway cross-sectional perspective view.
  • 3A and 3B are process diagrams for explaining a method of manufacturing the multilayer glass shown in FIG. 2A.
  • FIG. 3A is a process for preparing an upper glass layer
  • FIG. 3B is a sealing process.
  • FIG. 3C shows the step of arranging the sealing material
  • FIG. 3D shows the step of arranging the lower glass layer.
  • FIG. 4 shows a plan view of a solar cell module (a mode in which a single sealing material is formed).
  • FIG. 5 shows an embodiment of the solar cell panel of the present invention.
  • FIG. 5 (a) is a cross-sectional view
  • FIG. 5 (b) is a plan view
  • FIG. The figure is shown.
  • 6A and 6B are process diagrams for explaining a method of manufacturing the solar cell panel shown in FIG. 5A, in which FIG. 6A is a process for preparing an upper glass layer, and FIG. 6B is a solar cell.
  • FIG. 6 (c) shows the step of arranging the sealing resin layer
  • FIG. 6 (d) shows the step of arranging the sealing material
  • FIG. 6 (e) shows the arrangement of the lower glass layer. A process is shown.
  • FIG. 7 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.
  • FIG. 8 is an explanatory diagram of a solar cell module (solar cell module provided with a frame) including the solar cell panel shown in FIG. 5, and FIG. 8A is a partially enlarged cross-sectional view, and FIG. ) Shows a partial cross-sectional perspective view.
  • FIG. 9 shows a cross-sectional view of a measuring apparatus used for evaluation of water vapor barrier properties.
  • FIG. 10 is an evaluation double-glazed glass used for evaluation of protrusion resistance.
  • FIG. 10A is a cross-sectional view of the double-layer glass before evaluation of protrusion resistance, and FIG.
  • FIG. 11 is an evaluation double-layer glass used for evaluation of laminating properties (sealing properties).
  • FIG. 11 (a) is a cross-sectional view, and
  • FIG. 11 (b) is a plan view.
  • the sealing composition of the present invention is used for sealing a solar cell panel, 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 high molecular weight polyisobutylene.
  • the rubber component is preferably butyl rubber or high molecular weight polyisobutylene.
  • rubber components can be used alone or in combination of two or more.
  • butyl rubber and high molecular weight polyisobutylene are used in combination, or butyl rubber is used alone.
  • 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.
  • High molecular weight polyisobutylene is a high molecular weight polymer of isobutylene, for example, polyisobutylene having a viscosity average molecular weight of 300,000 or more.
  • the viscosity average molecular weight of the high molecular weight polyisobutylene is 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 high molecular weight polyisobutylene is less than the above-mentioned range, dripping may occur when the multilayer glass 3 or the solar cell panel 4 described later is assembled.
  • the blending ratio of butyl rubber and high molecular weight 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 filler, a tackifier and / or a softening agent can be blended in the sealing composition.
  • 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.
  • Preferred fillers include calcium carbonate, talc, titanium oxide, and carbon black, and more preferably calcium carbonate and carbon black.
  • ⁇ Fillers can be used alone or in combination of two or more.
  • carbon black is used alone or carbon black and calcium carbonate are used in combination.
  • the average particle diameter of the filler is, for example, 1 nm to 1000 ⁇ m, preferably 10 nm to 100 ⁇ m.
  • the blending ratio of the filler is, for example, 0.1 to 100 parts by mass, preferably 0.5 to 40 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 blending ratio of calcium carbonate is, for example, 100 to 10000 parts by mass, preferably 200 to 2000 parts by mass with respect to 100 parts by mass of carbon black.
  • the tackifier is contained in the sealing composition in order to improve the water vapor barrier property of the sealing material.
  • 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 compounding ratio of the tackifier is, for example, 1 part by mass or more, preferably 10 parts by mass or more, more preferably more than 30 parts by mass with respect to 100 parts by mass of the total amount of the rubber component and the specific polyolefin. It is less than 50 parts by mass, preferably 45 parts by mass or less, more preferably 40 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.
  • 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 softening agent is, for example, 0.5 to 30 parts by mass, preferably 1 to 30 parts by mass, and more 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. It is. When the blending ratio of the softening agent is within the above range, the handleability of the sealing material can be improved.
  • the sheet shape may not be sufficiently retained.
  • the sealing composition further includes an antioxidant (hindered phenol type), a lubricant, an anti-aging agent, an antistatic agent, a plasticizer, a heat stabilizer, a silane coupling agent (for example, a hydrolyzable silyl group).
  • an antioxidant hindered phenol type
  • a lubricant for example, a lubricant
  • an anti-aging agent for example, a lubricant
  • an antistatic agent for example, a plasticizer
  • a heat stabilizer for example, a hydrolyzable silyl group
  • silane coupling agent for example, a hydrolyzable silyl group
  • 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.
  • 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. 3D and 6E, and is, for example, 0.3 to 5.0 mm.
  • the thickness is preferably 0.4 to 3.0 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
  • the sealing material 1 has a storage shear elastic modulus G ′ of 25 ° C. obtained from a dynamic viscoelasticity measurement at a frequency of 1 Hz and a shear mode of 1.0 ⁇ 10 5 Pa or more.
  • the storage shear modulus G ′ is obtained as follows.
  • the sealing material 1 After producing the sealing material 1 having a thickness of 3 mm, it is left at 25 ° C. and 50% RH for 24 hours. Thereafter, the sealing material 1 is cut into a circular shape, and the release film 2 is peeled off. Next, with respect to the sealing material 1, the frequency is 1 Hz, the temperature rising rate is 5 ° C./mm, the measurement temperature region is ⁇ 60 to 200 ° C. A dynamic viscoelasticity measurement is performed using a dynamic viscoelasticity device to obtain a storage shear modulus G ′ of 25 ° C.
  • the above storage shear modulus G ′ is preferably 1.5 ⁇ 10 6 Pa or more, more preferably 2.0 ⁇ 10 6 Pa or more, particularly preferably 2.5 ⁇ 10 6 Pa or more, and most preferably Is 3.0 ⁇ 10 6 Pa or more, for example, 1.0 ⁇ 10 7 Pa or less.
  • the sealing material 1 has a loss shear modulus G ′′ at 150 ° C. obtained from the dynamic viscoelasticity measurement of 1.0 ⁇ 10 4 to 9.0 ⁇ 10 4 Pa.
  • the loss shear elastic modulus G ′′ is the same as the dynamic viscoelasticity measurement described above for the sealing material 1, and the dynamic viscoelasticity measurement is performed under the same conditions.
  • the above-described loss shear modulus G ′′ is preferably 2.0 ⁇ 10 4 to 8.0 ⁇ 10 4 Pa, more preferably 3.0 ⁇ 10 4 to 7.0 ⁇ 10 4 Pa, and particularly preferably Is 4.0 ⁇ 10 4 to 6.0 ⁇ 10 4 Pa.
  • 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. 2 shows an embodiment of the double-glazed glass of the present invention (an embodiment comprising four sealing materials), and FIG. 3 shows a process chart for explaining the method for producing the double-glazed glass shown in FIG.
  • FIG. 2B the upper glass layer 10 is omitted to clearly show the relative arrangement of the sealing material 1.
  • this multilayer 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, and the upper glass layer 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. 2B, the sealing material 1 is in 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 5.0 mm, preferably 0.4 to 3.0 mm.
  • the sealing material 1 including the vertical sealing material 13 and the horizontal sealing material 14 shown in FIG. 2B 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 5.0 mm, preferably 0.4 to 3.0 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 sealing material 1 mentioned above can hold
  • the sealing material 1 can effectively prevent protrusion by heating after being stuck to the multilayer glass 3, it is possible to effectively prevent contamination of the peripheral portion of the multilayer glass 3.
  • the sealing material 1 can be uniformly adhered to the multi-layer glass 3 by heating in this way, it is adhered (temporarily fixed) to the multi-layer glass 3 and then heated to them. Excellent water vapor barrier properties can be imparted.
  • 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, and 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. 4 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 rectangular sealing materials (two vertical sealing materials 13 and two horizontal sealing materials 14) in plan view.
  • 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. 5 is an embodiment of the solar cell panel of the present invention
  • FIG. 6 is a process diagram for explaining the method for producing the solar cell panel shown in FIG. 5A
  • FIG. 7 is the solar cell panel shown in FIG.
  • FIG. 8 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. 8 is a solar cell module provided with the solar cell panel shown in FIG. Explanatory drawing of a solar cell module) is shown.
  • this 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. 5 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 portion 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 portion 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 and 2 and Comparative Examples 1 to 4 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 1.0 mm and a thickness of 3.0 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.
  • JSR BUTYL # 065 Butyl rubber, degree of unsaturation 0.8 mol%, Mooney viscosity 32 (ML 1 + 8 , 125 ° C.), JSR company JSR BUTYL # 268: Butyl rubber, degree of unsaturation 1.5 mol%, Mooney viscosity 51 ( ML 1 + 8 , 125 ° C.), Oppanol B-100EP manufactured by JSR: High molecular weight polyisobutylene, viscosity average molecular weight 1.1 million, DFD-2005 manufactured by BASF, Crystalline polyethylene, Seast 3H manufactured by Unicar, Japan, Average particle size 27 nm, heavy calcium carbonate manufactured by Tokai Carbon Co., Ltd .: talc manufactured by Maruo Calcium Co., Ltd .: average particle size 900 ⁇ m Escron V-120: Coumarone-indene-styrene copolymer, softening point (deflection
  • Nippon Oil Polybutene HV-300 kinematic viscosity 26000mm 2 / s (at40 °C) , kinematic viscosity of 590mm 2 / s (at100 °C) , Nippon Oil Co., Ltd. (evaluation ) About the sealing materials obtained in each Example and each Comparative Example, (1) dynamic viscoelasticity, (2) water vapor barrier property, (3) protrusion resistance, (4) laminating (sealing) property, and (5 ) The tape shape was evaluated.
  • the sealing material After producing a sealing material having a thickness of 3.0 mm, and leaving it to stand at 25 ° C. and 50% RH for 24 hours, the sealing material is punched into a circle having a diameter of 7.9 mm, and the release film is peeled off.
  • the dynamic viscoelasticity is measured under the following conditions, and the storage shear modulus (G ′) at 25 ° C. and the loss shear modulus (G ′′) at 150 ° C. Obtained.
  • FIG. 9 shows a measuring apparatus used for evaluating the water vapor barrier property.
  • the measuring device 20 includes a bottomed cylindrical cup 22 provided with a ring-shaped ridge 21 at the 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 sealing material 1 was thermocompression bonded at 150 ° C. to seal the inside of the cup 22. Thereafter, this apparatus 20 was put into a high-temperature humidifier at 40 ° C. and 92% RH, and the mass of the entire apparatus 20 after 100 hours was measured. In addition, it was confirmed that there was no dripping of the sealing material 1 during the above-described thermocompression bonding.
  • 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.
  • FIG. 10 shows a multilayer glass for evaluation used for evaluation of protrusion resistance.
  • a double-glazed glass 3 (intermediate layer 6) in which a sealing material 1 having a thickness of 1.0 mm is sandwiched between an upper glass layer 10 and a lower glass layer 11 is used. Not provided) and the anti-extrusion property was evaluated. The results are shown in Table 1.
  • the sealing material 1 having a size of 10 ⁇ 10 cm and a thickness of 1.0 mm was attached to the surface (lower surface) of the upper glass layer 10 made of white sheet tempered glass having the same size as the sealing material 1 and a thickness of 3.2 mm. .
  • the release film is peeled off from the sealing material 1, and then the surface of the lower glass layer 11 made of white sheet tempered glass having the same size as the sealing material 1 and a thickness of 3.2 mm (upper surface).
  • the pressure bonding under vacuum was performed using the following pressure bonding apparatus and pressure bonding conditions.
  • Crimping device Vacuum press (model “MS-VPF-50”, manufactured by Nasho Press) Pressure bonding condition (A): 0.1 MPa, 150 ° C., 5 minutes under vacuum Pressure bonding condition (B): After pressure bonding condition (A), 0.1 MPa, 150 ° C., 5 minutes under normal pressure A multilayer glass 3 was produced.
  • the mass of the sealing material 1 (extruded part) (see FIG. 10B) that protrudes outward from the peripheral end portions of the upper glass layer 10 and the lower glass layer 11 after the above-described pressure bonding is measured.
  • the protrusion resistance of the sealing material 1 was evaluated according to the following reference
  • the mass ratio of the protruding portion was 5% or more and less than 50%.
  • FIG. 11 shows a multilayer glass for evaluation used for evaluation of laminating property (sealing property).
  • the upper side glass layer 10 is abbreviate
  • an upper glass layer 10 made of white unreinforced glass having a size of 100 mm ⁇ 100 mm and a thickness of 3.2 mm was prepared.
  • the sealing material 1 having a thickness of 1.0 mm was cut into a size of 100 mm ⁇ 10 mm to produce two vertical sealing materials 13. Further, the sealing material 1 having a thickness of 1.0 mm was cut into 80 mm ⁇ 10 mm to produce two lateral sealing materials 14.
  • the vertical sealing material 13 and the horizontal sealing material 14 are adhered to the surface (lower surface) of the peripheral end portion 5 of the upper glass layer 10 in the above-described arrangement, and then each release sheet 2 (see FIG. 1) is attached. It peeled from the vertical sealing material 13 and the horizontal sealing material 14.
  • the laminating property (sealing property) of the multilayer glass 3 for evaluation was evaluated according to the following evaluation criteria.
  • Compression device Press device (MINI TEST PRESS, manufactured by Toyo Seiki Co., Ltd.) Compression conditions: 0.01 MPa, 25 ° C., 10 seconds (evaluation criteria) ⁇ : The change rate of the area of the sealing material 1 before and after the press compression was less than 30%.
  • the sealing composition is used for sealing the edge of the glass layer or 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)
  • Sealing Material Composition (AREA)
  • Photovoltaic Devices (AREA)

Abstract

Cette invention concerne une composition d'étanchéité comprenant un composant de caoutchouc, et une polyoléfine obtenue par polymérisation d'un alcène ayant 2 à 3 atomes de carbone. Pour le composé d'étanchéité, le module de conservation en cisaillement à 25°C obtenu par des mesures de viscoélasticité dynamique en mode cisaillement à une fréquence de 1 Hz est de 1,0 × 105 Pa ou plus, et le module de pertes en cisaillement à 150°C obtenu par des mesures de viscoélasticité dynamique est de 1,0 × 104 - 9,0 × 104 Pa.
PCT/JP2013/059989 2013-04-01 2013-04-01 Composition d'étanchéité, verre multicouche, et panneau solaire WO2014162481A1 (fr)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3089219A4 (fr) * 2013-12-27 2017-01-04 BYD Company Limited Module de cellules photovoltaïques
TWI570449B (zh) * 2016-05-19 2017-02-11 Thin energy saving and translucent plate and its manufacturing method
WO2018199177A1 (fr) * 2017-04-28 2018-11-01 Ａｇｃ株式会社 Verre à double vitrage, son procédé de fabrication, et matériau d'étanchéité pour verres à double vitrage

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 (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3089219A4 (fr) * 2013-12-27 2017-01-04 BYD Company Limited Module de cellules photovoltaïques
US9997658B2 (en) 2013-12-27 2018-06-12 Byd Company Limited Photovoltaic cell module
TWI570449B (zh) * 2016-05-19 2017-02-11 Thin energy saving and translucent plate and its manufacturing method
WO2018199177A1 (fr) * 2017-04-28 2018-11-01 Ａｇｃ株式会社 Verre à double vitrage, son procédé de fabrication, et matériau d'étanchéité pour verres à double vitrage
JPWO2018199177A1 (ja) * 2017-04-28 2020-03-12 Ａｇｃ株式会社 複層ガラス及びその製造方法、並びに複層ガラス用シール材
JP7092119B2 (ja) 2017-04-28 2022-06-28 Ａｇｃ株式会社 複層ガラス及びその製造方法、並びに複層ガラス用シール材

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