WO2011016233A1 - 太陽電池封止材用樹脂組成物 - Google Patents
太陽電池封止材用樹脂組成物 Download PDFInfo
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- WO2011016233A1 WO2011016233A1 PCT/JP2010/004913 JP2010004913W WO2011016233A1 WO 2011016233 A1 WO2011016233 A1 WO 2011016233A1 JP 2010004913 W JP2010004913 W JP 2010004913W WO 2011016233 A1 WO2011016233 A1 WO 2011016233A1
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- Prior art keywords
- solar cell
- resin composition
- metal compound
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- composite metal
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Images
Classifications
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- C08L3/10—Oxidised starch
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
- C08L23/0869—Acids or derivatives thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K3/22—Oxides; Hydroxides of metals
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
- C08L23/0853—Vinylacetate
- C08L23/0861—Saponified vinylacetate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/04—Homopolymers or copolymers of esters
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- 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
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- 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
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- 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
- H01L31/0481—Encapsulation of modules characterised by the composition of the encapsulation material
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/2224—Magnesium hydroxide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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- 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
- This invention relates to the resin composition for solar cell sealing materials used for a solar cell sealing material.
- Patent Documents 5 and 6 disclose a transparent film in which an acid acceptor particle having an average particle diameter of 5 ⁇ m or less is dispersed in an ethylene vinyl acetate copolymer, which describes that acid can be reduced.
- Patent Document 7 describes that the acid can be reduced by using an acid acceptor made of magnesium hydroxide and having an average particle size of 0.01 to 10 ⁇ m in the solar cell sealing film.
- Patent Documents 5 and 6 since the refractive index difference between the resin and the acid acceptor is large, light scattering occurs at the interface between the resin and the acid acceptor, resulting in insufficient transparency. In addition, since the disclosed particle size is large, the effect as a sufficient acid acceptor cannot be obtained, the adhesiveness with the protective member is lowered with time, and the conversion efficiency is remarkably lowered. In Patent Document 7, since the difference in refractive index between the resin and the acid acceptor is small, transparency is maintained, but the catalytic activity of magnesium hydroxide is strong, and therefore the hydrolysis of the ethylene-vinyl acetate copolymer is promoted.
- the present invention improves the initial conversion efficiency of the solar cell module, reduces the decrease in the transparency of the resin, captures acid generation accompanying the resin degradation, and water that has entered the solar cell module.
- An object of the present invention is to provide a solar cell encapsulant resin composition and a solar cell encapsulant that can suppress a decrease in adhesiveness and a decrease in conversion efficiency.
- 1st invention is a resin composition for solar cell sealing materials containing an ethylene copolymer (A), (I) a layered composite metal compound represented by the following general formula (1): (Ii) a fired product of the layered composite metal compound represented by the general formula (1), (Iii) contains at least one of a layered composite metal compound represented by the following general formula (2), and (iv) a fired product of the layered composite metal compound represented by the general formula (2), (I) has an average plate surface diameter of 0.01 ⁇ m or more and 0.9 ⁇ m or less, and a refractive index of 1.45 or more and 1.55 or less, Said (iii) is related with the resin composition for solar cell sealing materials whose average board surface diameter is 0.02 micrometer or more and 0.9 micrometer or less, and whose refractive index is 1.48 or more and 1.6 or less.
- the second invention is the solar cell encapsulating according to the above invention, wherein in (i) to (iv), the adsorption amount of acetic acid is 0.1 ⁇ mol / g or more and 0.8 ⁇ mol / g or less, respectively.
- the present invention relates to a resin composition for materials.
- the above (ii) is a fired product obtained by heat-treating the above (i) and the above (iv) above (iii) at 200 ° C. or higher and 800 ° C. or lower, respectively. It is related with the resin composition for solar cell sealing materials.
- the fifth invention is the solar cell encapsulant according to the invention described above, wherein the time until reaching 80% of the equilibrium water absorption rate in the environment (i) at 23 ° C. and 50% RH is 120 minutes or less.
- the present invention relates to a resin composition.
- (ii) has a refractive index of 1.59 or more and 1.69 or less, and has a water absorption of 10% or more and 85% when left in a 23 ° C. and 50% RH environment for 2000 hours.
- % of the resin composition for a solar cell encapsulant of the present invention is a refractive index of 1.59 or more and 1.69 or less, and has a water absorption of 10% or more and 85% when left in a 23 ° C. and 50% RH environment for 2000 hours.
- (iv) has an average plate surface diameter of 0.02 ⁇ m or more and 0.9 ⁇ m or less and a refractive index of 1.58 or more and 1.72 or less. It is related with the resin composition for solar cell sealing materials of invention.
- the ethylene copolymer (A) comprises an ethylene vinyl acetate copolymer, an ethylene methyl acrylate copolymer, an ethylene ethyl acrylate copolymer, an ethylene methyl methacrylate copolymer, and an ethylene methacrylic copolymer. It is related with the resin composition for solar cell sealing materials of the said invention characterized by being 1 or more types of copolymers selected from the group which consists of an acid acid copolymer.
- the tenth invention relates to a masterbatch formed from the resin composition for solar cell encapsulant of the above invention.
- the eleventh invention relates to a solar cell encapsulant formed by using a mixture containing the resin composition for a solar cell encapsulant of the above invention.
- the twelfth invention relates to a solar cell module formed by using the resin composition for solar cell sealing material of the above invention.
- the initial conversion efficiency is improved, the transparency is good, the resin degradation due to the catalytic activity of the filler is small, and the deterioration of the adhesion with the protective member over time and the conversion efficiency are reduced by capturing acid and water.
- the resin composition for solar cell sealing materials which can form the solar cell sealing material to suppress, and the solar cell sealing material were able to be provided.
- the resin composition for a solar cell encapsulant of the present invention contains an ethylene copolymer (A) and further contains at least one of the following (i) to (iv).
- a layered composite metal compound represented by the following general formula (1) (Ii) a fired product of the layered composite metal compound represented by the general formula (1), (Iii) It contains at least one of a layered composite metal compound represented by the following general formula (2) and (iv) a fired product of the layered composite metal compound represented by the general formula (2).
- the average plate surface diameter is 0.01 ⁇ m or more and 0.9 ⁇ m or less, and the refractive index is 1.45 or more and 1.55 or less.
- (iii) has an average plate surface diameter of 0.02 ⁇ m to 0.9 ⁇ m and a refractive index of 1.48 to 1.6.
- the above (i) is a hydrotalcite-based compound, which is a compound in a layered form having interlayer ion exchange properties and neutralization reactivity with acids.
- the above (iii) is also a compound in a layered form having interlayer ion exchange properties and neutralization reactivity with acids.
- Interlayer ion exchange refers to the property that anions existing between layers of a layered composite metal compound replace other anions, and whether or not anions are replaced depends on the charge density of the ions. .
- the acid / water trapping effect is determined by the charge density of ions entering the interlayer, and anions having a higher valence and a smaller ion radius are more easily taken into the interlayer. Furthermore, the higher the basicity of the layered composite metal compound is, the better the neutralization reaction is. However, since the hydrolysis of the ethylene copolymer is promoted, the basicity within a certain range is determined from the relationship between neutralization and hydrolysis. Was found to exhibit the most efficient acid scavenging effect.
- metal oxides, metal hydroxides, metal carbonates, and the like are known as compounds having an acid / water scavenging effect, and many of these compounds have a high refractive index. For this reason, when added to the ethylene copolymer, the difference in refractive index from the ethylene copolymer becomes large, causing light scattering and reflection to become opaque, resulting in a decrease in conversion efficiency. Further, since the hydrolysis of the ethylene copolymer is promoted by the catalytic activity of the filler, the resin undergoes a decrease in physical properties, leading to a decrease in power generation efficiency and a shortened life.
- the initial conversion efficiency of the solar cell is reduced.
- a metal compound such as a metal oxide
- the initial conversion efficiency is reversed. I found a surprising effect that can improve. Furthermore, the transparency improvement and the acid / water scavenging effect were also improved, and an excellent effect was found in which the deterioration of adhesion with the protective member after the passage of time and the reduction in conversion efficiency could be suppressed.
- the above (ii) which is a fired product can be produced by firing the above (i) which is a layered composite metal compound represented by the general formula (1).
- the above (ii) exhibits a higher acid / water scavenging effect than the layered composite metal compound represented by the general formula (1) before firing.
- the above (iv) which is a fired product can be produced by firing the above (iii) which is a layered composite metal compound represented by the general formula (2).
- the above (iv) exhibits a higher acid / water scavenging effect than the layered composite metal compound represented by the general formula (2) before firing.
- the Al content ratio a is in the range of 0.2 ⁇ a ⁇ 0.35. If it is less than 0.2, it is difficult to produce a layered composite metal compound, and if it exceeds 0.35, the difference in refractive index from the ethylene copolymer (A) becomes large and the transparency deteriorates.
- the water content b is preferably 0 ⁇ b ⁇ 1.
- the Al content ratio c is preferably in the range of 0.2 ⁇ c ⁇ 0.4. If it is less than 0.2, it is difficult to produce a layered composite metal compound, and if it exceeds 0.4, repulsion due to positive charge between metals becomes too strong and production is difficult.
- the moisture content d is preferably 0 ⁇ d ⁇ 4.
- the type of the anion An n ⁇ in the general formulas (1) and (2) is not particularly limited, and examples thereof include hydroxide ions, carbonate ions, silicate ions, organic carboxylate ions, and organic sulfonate acids. Ions, organophosphate ions, and the like.
- the index a in the general formula (1) and the index c in the general formula (2) are obtained by dissolving the layered composite metal compound with an acid and analyzing with “Plasma Emission Spectrometer SPS4000 (Seiko Electronics Co., Ltd.)”. And asked.
- the average plate surface diameter of the layered composite metal compound is 0.01 to 0.9 ⁇ m. From the viewpoint of the acid / water capturing effect, 0.02 to 0.75 ⁇ m is more preferable. More preferably, it is 0.02 to 0.65 ⁇ m. If it exceeds 0.9 ⁇ m, the acid / water supplementation effect is insufficient, and if it is less than 0.01 ⁇ m, industrial production of the layered composite metal compound is difficult.
- the average plate surface diameter of the layered composite metal compound is indicated by the average value of the numerical values measured with an electron micrograph.
- the average plate surface diameter is 0.02 to 0.9 ⁇ m. From the viewpoint of dispersibility and transparency, 0.02 to 0.65 ⁇ m is more preferable. When it exceeds 0.9 ⁇ m, the acid scavenging ability when blended with the ethylene copolymer (A) is insufficient, and when it is less than 0.02 ⁇ m, industrial production of the layered composite metal compound is difficult.
- the refractive index of (i) above is in the range of 1.45 to 1.55. From the viewpoint of transparency due to a difference in refractive index from the resin and an acid / water scavenging effect, 1.47 to 1.53 is more preferable. If it is less than 1.45, industrial production of the layered composite metal compound is difficult, and if it exceeds 1.55, the transparency when blended with the ethylene copolymer (A) is insufficient, so the blending amount is reduced. As a result, the sustainability of the acid / water scavenging effect is poor.
- the refractive index was measured based on JIS K0062. That is, it was measured by the Becke method using “Abbe refractometer: 3T (manufactured by Atago)” at 23 ° C. using ⁇ -bromonaphthalene and DMF as solvents.
- the refractive index (iii) is in the range of 1.48 to 1.6. From the viewpoint of transparency due to the difference in refractive index with the resin, 1.48 to 1.55 is more preferable. In addition, it is difficult to industrially produce a layered composite metal compound of less than 1.48. On the other hand, when it exceeds 1.6, the blending amount in the ethylene copolymer (A) is insufficient, so the blending amount Therefore, sustainability of the acid / water scavenging effect is poor.
- the BET specific surface area of the above (i) is preferably 5 to 200 m 2 / g. From the viewpoint of the acid / water scavenging effect, the BET specific surface area of the above (i) is more preferably 15 to 160 m 2 / g. More preferably, it is 35 to 100 m 2 / g. If it is less than 15 m 2 / g, the neutralization efficiency is poor, and the adhesion with the protective member due to resin deterioration may be reduced. When exceeding 200 m ⁇ 2 > / g, there exists a possibility that the dispersibility with respect to an ethylene copolymer (A) may deteriorate.
- the adsorption amount of acetic acid is preferably 0.1 to 0.8 ⁇ mol / g.
- the amount of acetic acid adsorbed was 1 g of the above layered composite metal compound, 30 ml of an ethylene glycol monomethyl ether solution of 0.02 mol / L acetic acid was added, and ultrasonically washed for 1 hour and a half, adsorbed on the layered composite metal compound, and centrifuged.
- the supernatant obtained by the above was obtained by a back titration method using potentiometric titration with a 0.1 N potassium hydroxide solution.
- the time to reach 80% of the equilibrium water absorption rate in the above-mentioned (i) at 23 ° C. and 50% RH is preferably 120 minutes or less. When it exceeds 120 minutes, since the immediate effect of the acid / water capturing effect is low, it may be difficult to suppress a decrease in adhesion with the protective member over time.
- the equilibrium water absorption of (i) above is a value indicating the ratio between the weight increase and the original weight when the sample is allowed to stand for 2000 hours in an environment of 23 ° C. and 50% RH as a percentage.
- the above (ii), which is a fired product preferably has a refractive index of 1.59 to 1.69. If it is less than 1.59, the firing is insufficient, so that crystal defects are likely to occur and the sealing material may be deteriorated. If it exceeds 1.69, the refractive index with the ethylene copolymer (A) The difference may increase and the transparency may be insufficient.
- the water absorption is preferably 10 to 85% when left for 2000 hours in an environment of 23 ° C. and 50% RH as described in (ii) above. From the viewpoint of the acid / water scavenging effect, 30 to 85% is more preferable, and 40 to 85% is more preferable. If it exceeds 85%, water absorption proceeds when a resin composition for a solar cell is produced, and the water trapping effect may be insufficient when a module is formed. If it is less than 10%, since the acid / water scavenging effect is low, it may be difficult to suppress a decrease in adhesion with the protective member over time.
- the water absorption rate of (ii) above is a value indicating the ratio of the weight increase and the original weight in a percentage when left for 2000 hours in an environment of 23 ° C. and 50% RH.
- the above (iv), which is a fired product, preferably has an average plate surface diameter of 0.02 to 0.9 ⁇ m. From the viewpoint of dispersibility and transparency, 0.02 to 0.65 ⁇ m is more preferable. When exceeding 0.9 micrometer, there exists a possibility that the acid capture
- the refractive index (iv) is preferably 1.58 to 1.72. If it is less than 1.58, the firing is insufficient, so that crystal defects are likely to occur, and the sealing material may be deteriorated. Moreover, when it exceeds 1.72, there exists a possibility that the transparency at the time of mix
- the above (i) to (iv) are preferably used in a total amount of 0.01 to 20 parts by weight with respect to 100 parts by weight of the ethylene copolymer (A).
- a high concentration blended resin composition for solar cell encapsulants such as a masterbatch
- it is preferably used in an amount of 5 to 20 parts by weight.
- Manufacturing a solar cell encapsulant using a masterbatch is preferable from the viewpoint of dispersion and handling of the layered composite metal compound.
- each is used in the range of 0.01 to 7 parts by weight.
- the layered composite metal compound represented by the general formula (1) is prepared by mixing an alkaline aqueous solution containing anions, an aqueous magnesium salt solution and an aqueous aluminum salt solution to prepare a mixed solution having a pH in the range of 10 to 14.
- the mixed solution is obtained by aging in the temperature range of 80 to 100 ° C.
- the pH during the ripening reaction is preferably 10 to 14, more preferably 11 to 14. If the pH is less than 10, a layered composite metal compound having a large plate surface diameter and an appropriate thickness may not be obtained.
- the aging temperature is less than 80 ° C. or exceeds 100 ° C., it is difficult to obtain a layered composite metal compound having an appropriate plate surface diameter.
- a more preferable aging temperature is 85 to 100 ° C.
- the aging time for the ripening reaction of the layered composite metal compound is not particularly limited, but is, for example, about 2 to 24 hours. In the case of less than 2 hours, it is difficult to obtain a layered composite metal compound having a large average plate surface diameter and an appropriate thickness. Aging over 24 hours is not economical.
- the alkaline aqueous solution containing the anion is preferably a mixed alkaline aqueous solution of an aqueous solution containing an anion and an aqueous alkali hydroxide solution.
- aqueous solutions of sodium carbonate, potassium carbonate, sodium phosphate, sodium silicate, organic carboxylate, organic sulfonate, organic phosphate and the like are preferable.
- alkali hydroxide aqueous solution sodium hydroxide, potassium hydroxide, ammonia, urea aqueous solution and the like are preferable.
- magnesium salt aqueous solution in the present invention magnesium sulfate aqueous solution, magnesium chloride aqueous solution, magnesium nitrate aqueous solution and the like can be used, and magnesium sulfate aqueous solution and magnesium chloride aqueous solution are preferable.
- a slurry of magnesium oxide powder or magnesium hydroxide powder may be substituted.
- an aluminum sulfate aqueous solution an aluminum chloride aqueous solution, an aluminum nitrate aqueous solution and the like can be used, and an aluminum sulfate aqueous solution and an aluminum chloride aqueous solution are preferable.
- a slurry of aluminum oxide powder or aluminum hydroxide powder may be substituted.
- the mixing order of the alkaline aqueous solution containing anion, magnesium and aluminum is not particularly limited, and each aqueous solution or slurry may be mixed simultaneously.
- an aqueous solution or slurry in which magnesium and aluminum are mixed in advance is added to an aqueous alkali solution containing anions.
- the aqueous solution may be added at one time or continuously dropped.
- the pH of the above (i) is preferably 8.5 to 10.5.
- pH is less than 8.5, there exists a possibility that the neutralization efficiency with an acid may become weak.
- pH exceeds 10.5 there exists a possibility that an ethylene copolymer may deteriorate by elution of magnesium.
- the pH of the layered composite metal compound was measured by weighing 5 g of a sample into a 300 ml Erlenmeyer flask, adding 100 ml of boiled pure water, heating and holding the boiled state for about 5 minutes, then plugging it and allowing it to cool to room temperature.
- the above (ii) is preferably a fired product obtained by heat-treating the layered composite metal compound represented by the general formula (1) (i) above at 200 to 800 ° C. for 1 to 24 hours. It is more preferable to perform heat treatment at 250 ° C. to 700 ° C.
- the heat treatment time may be adjusted according to the heat treatment temperature, and the atmosphere during the heat treatment may be either an oxidizing atmosphere or a non-oxidizing atmosphere, but it is better not to use a gas having a strong reducing action such as hydrogen.
- the layered composite metal compound represented by the general formula (2) is a mixture of an aqueous magnesium salt solution, an aqueous zinc salt solution, an aqueous nickel salt solution, an aqueous calcium salt solution, an alkaline aqueous solution containing anions, and an aqueous aluminum salt solution.
- the mixed solution After preparing a mixed solution having a pH in the range of 8 to 14, the mixed solution can be obtained by aging in the temperature range of 80 to 100 ° C.
- the pH during the ripening reaction is preferably 10 to 14, more preferably 11 to 14. If the pH is less than 10, a layered composite metal compound having a large plate surface diameter and an appropriate thickness may not be obtained.
- the aging temperature is less than 80 ° C. or exceeds 100 ° C., it becomes difficult to obtain a layered composite metal compound having an appropriate plate surface diameter.
- a more preferable aging temperature is 85 to 100 ° C.
- the aging time for the ripening reaction of the layered composite metal compound is not particularly limited, but is, for example, about 2 to 24 hours. In the case of less than 2 hours, it is difficult to obtain a layered composite metal compound having a large plate surface diameter and an appropriate thickness. Also, aging over 24 hours is not economical.
- Examples of the preferable alkaline aqueous solution containing the anion, aqueous solution containing the anion, and aqueous alkali hydroxide solution include the examples described in the production method (i) above.
- metal salt aqueous solution in the present invention a metal sulfate aqueous solution, a metal chloride aqueous solution, a metal nitrate aqueous solution and the like can be used, and a magnesium chloride aqueous solution is preferable. Further, a slurry of metal oxide powder or metal hydroxide powder may be substituted.
- an aluminum sulfate aqueous solution an aluminum chloride aqueous solution, an aluminum nitrate aqueous solution or the like can be used, and an aluminum chloride aqueous solution is preferable.
- a slurry of aluminum oxide powder or aluminum hydroxide powder may be substituted.
- the mixing order of the alkaline aqueous solution containing anion, at least one of magnesium, zinc, nickel and calcium and aluminum is not particularly limited, and each aqueous solution or slurry may be mixed simultaneously.
- an aqueous solution or slurry in which magnesium, zinc, nickel, calcium and aluminum are mixed in advance is added to an aqueous alkali solution containing anions.
- the aqueous solution may be added at one time or continuously dropped.
- the pH of the layered composite metal compound represented by the general formula (2) is preferably 8 to 10.
- pH is less than 8, there exists a possibility that the neutralization efficiency with an acid may become weak.
- pH exceeds 10 there exists a possibility that an ethylene vinyl acetate copolymer may deteriorate by elution of a metal.
- the pH of the layered composite metal compound was measured by weighing 5 g of a sample into a 300 ml Erlenmeyer flask, adding 100 ml of boiled pure water, heating and holding the boiled state for about 5 minutes, then plugging it and allowing it to cool to room temperature.
- the layered composite metal compound is preferably heat-treated in a temperature range of 200 ° C. to 800 ° C., more preferably 250 ° C. to 700 ° C.
- the heat treatment time may be adjusted according to the heat treatment temperature, preferably 1 to 24 hours, and more preferably 2 to 10 hours.
- the atmosphere during the heat treatment may be either an oxidizing atmosphere or a non-oxidizing atmosphere, but it is better not to use a gas having a strong reducing action such as hydrogen.
- the ethylene copolymer (A) used in the present invention is an ethylene vinyl acetate copolymer having a vinyl acetate content of 15 to 40% by weight from the viewpoint of reducing cell damage in the laminating process, and improving transparency and productivity.
- An ethylene vinyl acetate copolymer having a vinyl acetate content of 25 to 35% by weight is more preferable.
- the ethylene copolymer (A) used in the present invention is a polymer obtained by mixing two or more monomers, and is not particularly limited as long as at least one of them is an ethylene monomer.
- ethylene vinyl acetate copolymer, ethylene methyl acrylate copolymer, ethylene ethyl acrylate copolymer, ethylene methyl methacrylate copolymer, ethylene ethyl methacrylate copolymer, ethylene vinyl acetate based plural Examples include copolymers, ethylene methyl acrylate multi-component copolymers, ethylene ethyl acrylate multi-component copolymers, ethylene methyl methacrylate multi-component copolymers, ethylene ethyl methacrylate multi-component copolymers, etc.
- the ethylene copolymer (A) preferably has a melt flow rate (based on JIS K7210) of 0.1 to 60 g / 10 min in consideration of moldability, mechanical strength, and the like. 5 to 45 g / 10 min is more preferable.
- the melt flow rate is hereinafter referred to as “MFR”.
- the resin composition for a solar cell encapsulant of the present invention can be produced by using an ethylene copolymer (A) and at least one of the above (i) to (iv) as a general high-speed shear mixer. After mixing using a mixer, super mixer, etc., melt-kneaded using a two-roll, three-roll, pressure kneader, Banbury mixer, single-screw kneading extruder, twin-screw kneading extruder, etc., and then extruded into pellets After being kneaded or kneaded, it can be produced by processing into a sheet and forming into a pellet.
- the resin composition for a solar cell encapsulant of the present invention obtained in this way is, if necessary, a crosslinking agent, a crosslinking aid, a silane coupling agent, an ultraviolet absorber, a light stabilizer, an antioxidant, light It is also possible to add additives such as a diffusing agent, a wavelength converting agent, a colorant, and a flame retardant. Further, various additives can be produced by blending together with the ethylene copolymer and the layered composite metal compound, or can be added separately when producing the final molded product.
- the crosslinking agent is used to prevent thermal deformation of the ethylene copolymer under high temperature use.
- organic peroxides are generally used.
- the addition amount is not particularly limited, but it is preferably 0.05 to 3 parts by weight with respect to 100 parts by weight in total of the ethylene copolymer and at least one of the above (i) to (iv).
- tert-butyl peroxyisopropyl carbonate tert-butyl peroxy-2-ethylhexyl isopropyl carbonate
- tert-butyl peroxyacetate tert-butylcumyl peroxide
- 2,5-dimethyl-2,5-di (Tert-Butylperoxy) hexane di-tert-butyl peroxide
- 2,5-dimethyl-2,5-di (tert-butylperoxy) hexyne-3 2,5-dimethyl-2,5-di (Tert-butylperoxy) hexane
- 1,1-di (tert-hexylperoxy) -3 3,5-trimethylcyclohexane
- 1,1-di (tert-butylperoxy) cyclohexane 1,1-di (Tert-hexylperoxy) cyclohexane
- the crosslinking aid is used to efficiently perform the crosslinking reaction, and examples thereof include polyunsaturated compounds such as polyallyl compounds and polyacryloxy compounds.
- the addition amount is not particularly limited, but it is preferably 0.05 to 3 parts by weight with respect to 100 parts by weight in total of the ethylene copolymer and at least one of the above (i) to (iv).
- Specific examples include triallyl isocyanurate, triallyl cyanurate, diallyl phthalate, diallyl fumarate, diallyl maleate, ethylene glycol diacrylate, ethylene glycol dimethacrylate, trimethylolpropane trimethacrylate, and the like.
- Silane coupling agents are used to improve adhesion to protective materials and solar cell elements, and include unsaturated groups such as vinyl groups, acryloxy groups, and methacryloxy groups, and hydrolyzable groups such as alkoxy groups.
- the addition amount is not particularly limited, but it is preferably 0.05 to 3 parts by weight with respect to 100 parts by weight in total of the ethylene copolymer and at least one of the above (i) to (iv).
- vinyltrichlorosilane vinyltris ( ⁇ methoxyethoxy) silane, vinyltriethoxysilane, vinyltrimethoxysilane, ⁇ -methacryloxypropyltrimethoxysilane, ⁇ - (3,4-epoxycyclohexyl) ethyltrimethoxysilane.
- the ultraviolet absorber is used for imparting weather resistance, and examples thereof include benzophenone series, benzotriazole series, triazine series, and salicylic acid ester series.
- the addition amount is not particularly limited, but is preferably 0.01 to 3 parts by weight with respect to 100 parts by weight as a total of the ethylene copolymer and the layered composite metal compound.
- Specific examples include 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-methoxy-2′-carboxybenzophenone, 2-hydroxy-4-octoxybenzophenone, 2-hydroxy-4-n-dodecyloxybenzophenone, 2-hydroxy-4-n-octadecyloxybenzophenone, 2-hydroxy-4-benzyloxybenzophenone, 2-hydroxy-4-methoxy-5-sulfobenzophenone, 2-hydroxy-5-chlorobenzophenone, 2,4-dihydroxybenzophenone 2,2′-dihydroxy-4-methoxybenzophenone, 2,2′-dihydroxy-4,4′-dimethoxybenzophenone, 2,2 ′, 4,4′-tetrahydroxybenzophenone, 2- (2-hydroxy-5 -Methylphenyl) ben Triazole, 2- (2-hydroxy-5-tert-butylphenyl) benzotriazole, 2- (2-hydroxy-3,5-dimethylphenyl) benzotri
- the light stabilizer is used in combination with an ultraviolet absorber to impart weather resistance, and examples thereof include hindered amine light stabilizers.
- the addition amount of the light stabilizer is not particularly limited, but is preferably 0.01 to 3 parts by weight with respect to 100 parts by weight in total of the ethylene copolymer and at least one of the above (i) to (iv).
- the antioxidant is used for imparting stability at high temperatures, and examples thereof include monophenol-based, bisphenol-based, polymer-type phenol-based, sulfur-based, and phosphoric acid-based agents.
- the addition amount is not particularly limited, but it is preferably 0.05 to 3 parts by weight with respect to 100 parts by weight in total of the ethylene copolymer and at least one of the above (i) to (iv).
- the solar cell encapsulant is generally manufactured by a molding method using a T-die extruder, a calendar molding machine, or the like.
- the solar cell encapsulant of the present invention is prepared in advance by a resin composition in which at least one of the above (i) to (iv) is blended with the ethylene copolymer (A).
- the crosslinking agent is not substantially decomposed by a T-die extruder by blending a crosslinking agent, a crosslinking aid, a silane coupling agent, an ultraviolet absorber, a light stabilizer, and an antioxidant. It can be obtained by extrusion molding into a sheet at the molding temperature.
- the thickness of the sealing material is preferably about 0.1 to 1 mm.
- the solar cell encapsulant is produced as a master batch containing the resin composition for a solar cell encapsulant in a high concentration containing at least one of the above (i) to (iv), and the master batch is used for dilution. It is also preferable to manufacture by kneading with an ethylene copolymer and extrusion molding. By producing a solar cell encapsulant using a master batch, the layered composite metal compound can be more highly dispersed.
- FIG. 1 is a schematic explanatory view showing an example of a solar cell module.
- Reference numeral 11 in FIG. 1 is a transparent substrate
- 12A is a front surface solar cell sealing material
- 12B is a back surface solar cell sealing material
- 13 is a power generation element
- 14 is a protective member.
- the power generating element 13 is sandwiched between the front surface solar cell sealing material 12A and the back surface solar cell sealing material 12B.
- the laminate is sandwiched between the transparent substrate 11 and the protective member 14.
- the solar cell module can be produced by fixing solar cell sealing materials on the top and bottom of the solar cell element. Generally, it is manufactured by thermocompression bonding using a vacuum laminator. As such a solar cell module, for example, as shown in the example of FIG.
- the solar cell module is formed from the both sides of the solar cell element such as transparent substrate / solar cell encapsulant / solar cell element / solar cell encapsulant / protective member.
- Protect solar cell encapsulant with solar cell encapsulant such as super straight structure sandwiched by cell encapsulant or transparent substrate / solar cell element / solar cell encapsulant / protective member The thing laminated
- stacked with the member is mentioned.
- a heat-strengthened white plate glass or a transparent film is used, and for the sealing material, an ethylene vinyl acetate copolymer having excellent moisture resistance is used.
- a sheet having a structure in which aluminum is sandwiched between vinyl fluoride films, a sheet in which aluminum is sandwiched between hydrolysis-resistant polyethylene terephthalate films, and the like are used as protective members that are required to be moistureproof and insulating.
- Part means “part by weight” and “%” means “% by weight”.
- A Ethylene copolymer (A-1) manufactured by Tosoh Corporation (Ultrasen 751, ethylene vinyl acetate copolymer, vinyl acetate content: 28%, MFR: 5.7) (A-2) manufactured by Tosoh Corporation (Ultrasen 637-1, ethylene vinyl acetate copolymer, vinyl acetate content: 20%, MFR: 8.0) (A-3) Mitsui / DuPont Polychemical Co., Ltd. (Evaflex V523, ethylene vinyl acetate copolymer, vinyl acetate content: 33%, MFR: 14)
- (B) the layered composite metal compound and the fired products (B-1) to (B-10) are shown in Table 1.
- Example 1 85 parts by weight of an ethylene copolymer and 15 parts by weight of a layered composite metal compound were put into a super mixer (manufactured by Mitsui Mining Co., Ltd.), stirred at a temperature of 20 ° C. for 3 minutes, and then twin screw extruder (manufactured by Nippon Placon Co., Ltd.). ) To obtain a layered composite metal compound master batch.
- stabilization was performed by blending 80 parts by weight of an ethylene copolymer with 10 parts by weight of an ultraviolet absorber, 5 parts by weight of a light stabilizer, and 5 parts by weight of an antioxidant. An agent masterbatch was obtained.
- a 70 ml part of an ethylene copolymer was mixed with 15 parts by weight of a crosslinking agent, 15 parts by weight of a crosslinking aid, and 15 parts by weight of a silane coupling agent while stirring with a supermixer. Obtained.
- the ethylene copolymer (A) and the layered composite metal compound or its The fired product was prepared so as to have a blending amount shown in Table 3. After the preparation, extrusion molding was carried out at 90 ° C.
- crosslinking agent masterbatch and the stabilizer masterbatch were blended at a ratio of 10 parts by weight with respect to a total of 100 parts by weight of the ethylene copolymer and the layered composite metal compound as shown in Table 3.
- the types of the crosslinking agent, the crosslinking assistant, the silane coupling agent, the light stabilizer, and the antioxidant are as follows.
- Crosslinking agent 2,5-dimethyl-2,5-di (tert-butylperoxy) hexane
- Crosslinking aid triallyl isocyanurate silane coupling agent: ⁇ -methacryloxypropyltrimethoxysilane
- UV absorber 2-hydroxy -4-Methoxybenzophenone light stabilizer: N, N'-bis (3-aminopropyl) ethylenediamine-2,4-bis [N-butyl-N- (1,2,2,6,6-pentamethyl-4- Piperidyl) amino] -6-chloro-1,3,5-triazine condensate antioxidant: phenyl diisodecyl phosphite
- Examples 2 to 17 and Comparative Examples 1 to 13 Except having set it as the mixing
- test pieces obtained in Examples 1 to 17 and Comparative Examples 1 to 13 were evaluated according to the following criteria, and the evaluation results are shown in Table 5.
- a sample for durability test as shown in FIG. 2 was prepared. First, the solar cell encapsulant 16 obtained in Examples 1 to 17 is sandwiched between a transparent substrate (glass thickness 3 mm) 15 and a protective member 17 of a hydrolysis-resistant polyethylene terephthalate film (thickness 0.1 mm). A laminated body was obtained. Then, under a vacuum with a vacuum laminator, thermocompression bonding was performed at 150 ° C. for 35 minutes to crosslink the sealing material, thereby preparing a sample for durability test (1). Further, a laminate shown in FIG. 2 was prepared, and heat-pressed for 15 minutes at 150 ° C. under vacuum with a vacuum laminator. Thereafter, the sealing material was crosslinked in an oven at 150 ° C. for 15 minutes, and sample 2 for durability test. Was made. The durability test sample (2) was accelerated in an acid generation rate by an acceleration test, and then the acid generation amount was measured.
- the acceleration test is performed by a pressure cooker test, where the durability test sample 1 is allowed to stand for 72 hours in an environment of a temperature of 121 ° C., a humidity of 100% RH, and a pressure of 2 kg / cm 2 , and then the solar cell encapsulant 5 0.0 g was immersed in 5.0 ml of acetone at 25 ° C. for 48 hours, and the amount of acetic acid contained in the acetone extract was quantified by gas chromatography (acid capture effect 1).
- an accelerated test of the durability test sample 2 was performed under the same conditions. After that, 1.5 g of the solar cell sealing material was immersed in 10 ml of purified water at 25 ° C. for 24 hours, and then subjected to an ultrasonic cleaner for 10 minutes. The amount of acetic acid contained in the extract was quantified by ion chromatography (acid capture effect 2).
- the acceleration test was performed by a pressure cooker test, and the sample for durability test was allowed to stand for 48 hours in an environment of a temperature of 121 ° C., a humidity of 100% RH, and a pressure of 2 kg / cm 2 .
- the durability test was performed by a pressure cooker test, and the sample for the durability test was allowed to stand for 48 hours in an environment of a temperature of 121 ° C., a humidity of 100% RH, and a pressure of 2 kg / cm 2 .
- a strip having a width of 25 mm was cut from the sample film for durability test to obtain a test piece, and a 180 ° peel test was performed with a tensile tester under a tension condition of 50 mm / min.
- the conversion efficiency was calculated from the incident light energy, the output at the optimum operating point, and the area of the power generation element.
- the initial conversion efficiency of the reference sample prepared by removing the layered composite metal compound from Sample 1 was set to 100. And the conversion efficiency after the test of the sample 1 with respect to the initial conversion efficiency was made into the reference
- a power generating element is sandwiched between the solar cell encapsulants 12A and 12B obtained in Examples 1 to 17 and Comparative Examples 1 to 13, and as shown in FIG. 1, the transparent substrate (glass thickness 3 mm) 11 and hydrolysis resistant
- the laminate was sandwiched between three layers (thickness 1.0 mm) of protective member 14 of polyethylene terephthalate / aluminum / hydrolysis-resistant polyethylene terephthalate.
- thermocompression bonding was performed at 150 ° C. for 15 minutes under vacuum using a vacuum laminator. Thereafter, the sealing material was crosslinked in an oven at 150 ° C. for 15 minutes to prepare Sample 2.
- the test was performed using a pressure cooker tester in which Sample 2 was allowed to stand for 72 hours in an environment of a temperature of 121 ° C., a humidity of 100% RH, and a pressure of 2 kg / cm 2 .
- the conversion efficiency was calculated from the incident light energy, the output at the optimum operating point, and the area of the power generation element.
- the conversion efficiency of the power generation element alone was set to 100, and the conversion efficiency before the test of Sample 2 with respect to the conversion efficiency was defined as the initial conversion efficiency retention rate.
- unit was made into the conversion efficiency retention with time.
- Example 18 85 parts by weight of an ethylene copolymer and 15 parts by weight of a layered composite metal compound were put into a supermixer (manufactured by Mitsui Mining Co., Ltd.), stirred at a temperature of 20 ° C. for 3 minutes, and then a twin screw extruder (Nippon Placon Co., Ltd.). A layered composite metal compound master batch was obtained.
- a cross-linking agent master batch in which a cross-linking agent, a cross-linking aid, and a silane coupling agent are blended in an ethylene copolymer
- a stabilizer master in which a UV absorber, a light stabilizer and an antioxidant are blended in the ethylene copolymer. Got a batch.
- an ethylene copolymer (A) and a layered composite metal compound or a fired product thereof are obtained. It prepared so that it might become the compounding quantity of Table 6. After the preparation, extrusion molding was performed at 90 ° C. with a T-die extruder to produce solar cell encapsulants 12A, 12B, 16, 18, 21 (thickness 0.5 mm). The type and amount of the crosslinking agent, crosslinking assistant, silane coupling agent, ultraviolet absorber, light stabilizer, and antioxidant in the solar cell encapsulant are the sum of the ethylene copolymer and the layered composite metal compound.
- Crosslinking agent 0.5 part by weight of 2,5-dimethyl-2,5-di (tert-butylperoxy) hexane
- Crosslinking aid 0.5 part by weight of triallyl isocyanurate
- Silane coupling agent ⁇ -methacryloxypropyl
- UV absorber 0.25 parts by weight of 2-hydroxy-4-methoxybenzophenone
- Light stabilizer N, N′-bis (3-aminopropyl) ethylenediamine-2,4-bis [N -Butyl-N- (1,2,2,6,6-pentamethyl-4-piperidyl) amino] -6-chloro-1,3,5-triazine condensate 0.5 parts by mass antioxidant: phenyldiisodecylphos Fight 0.25 parts by mass
- Example 19 to 37 and Comparative Examples 14 to 23 Except having set it as the mixing
- test pieces obtained in Examples 18 to 36 were evaluated according to the following criteria, and the evaluation results are shown in Table 8.
- a sample for durability test as shown in FIG. 2 was prepared.
- the solar cell encapsulant 16 obtained in Examples 18 to 36 and Comparative Examples 14 to 23 was used to protect the transparent substrate (glass thickness 3 mm) 15 and the hydrolysis-resistant polyethylene terephthalate film (thickness 0.1 mm).
- the laminate was sandwiched between the members 17. Thereafter, thermocompression bonding was performed at 150 ° C. for 15 minutes under vacuum using a vacuum laminator.
- the sealing material was crosslinked in an oven at 150 ° C. for 15 minutes to prepare a sample for durability test, and the acid generation rate was measured after accelerating the rate of acid generation by an accelerated test.
- the acceleration test was carried out by a pressure cooker test in which the sample for durability test was allowed to stand for 72 hours in an environment of a temperature of 121 ° C., a humidity of 100% RH, and a pressure of 2 kg / cm 2 . Thereafter, 2 g of the solar cell encapsulant was immersed in 10 ml of purified water at 25 ° C. for 24 hours, and the amount of acetic acid contained in the water extract was quantified by ion chromatography.
- the solar cell encapsulant 18 obtained in Examples 18 to 36 and Comparative Examples 14 to 23 was sandwiched between transparent substrates (glass thickness 3 mm) 19 and 20 to form three layers (see FIG. 3). Thereafter, thermocompression bonding was performed at 150 ° C. for 15 minutes under vacuum using a vacuum laminator. Next, the sealing material was crosslinked in an oven at 150 ° C. for 15 minutes to prepare a sample for durability test, and the haze value before and after the acceleration test was measured with a haze meter manufactured by BYK Gardner.
- the acceleration test was performed by the pressure cooker test under the condition that the sample for durability test was allowed to stand for 96 hours in an environment of a temperature of 121 ° C., a humidity of 100% RH, and a pressure of 2 kg / cm 2 .
- the durability test was performed by leaving the sample for durability test in an environment of temperature 85 ° C. and humidity 85% RH for 500 hours.
- the peel strength between the solar cell encapsulant and the protective member was cut from a sample for durability test into a strip shape having a width of 25 mm and used as a test piece. Then, the test piece was subjected to a 180 ° peel test using a tensile tester at a tensile speed of 50 mm / min.
- the peel strength retention indicates the peel strength after the durability test when the peel strength of the sample for durability test before the durability test of Comparative Example 7 in which the layered composite metal compound is not blended is 100.
- a power generating element is sandwiched between the solar cell encapsulants 12A and 12B obtained in Examples 18 to 36 and Comparative Examples 14 to 23, and the transparent substrate (glass thickness 3 mm) 11 and hydrolysis resistant as shown in FIG.
- the laminate was sandwiched between three layers (thickness 1.0 mm) of protective member 14 of polyethylene terephthalate / aluminum / hydrolysis-resistant polyethylene terephthalate. Subsequently, thermocompression bonding was performed at 150 ° C. for 15 minutes under vacuum using a vacuum laminator. Then, the solar cell module sample was produced by hold
- the test was performed under the condition that the sample was allowed to stand in an environment of 85 ° C. and 85% RH for 1000 hours.
- the conversion efficiency was calculated from the incident light energy, the output at the optimum operating point, and the area of the power generation element.
- the initial conversion efficiency of a reference sample prepared by removing the layered composite metal compound from the sample was 100.
- the conversion efficiency after the test of the sample with respect to the initial conversion efficiency was taken as the reference retention rate.
- a power generating element is sandwiched between the solar cell encapsulants 12A and 12B obtained in Examples 18 to 36 and Comparative Examples 14 to 23, and the transparent substrate (glass thickness 3 mm) 11 and hydrolysis resistant as shown in FIG.
- the laminate was sandwiched between three layers (thickness 1.0 mm) of protective member 14 of polyethylene terephthalate / aluminum / hydrolysis-resistant polyethylene terephthalate. Subsequently, it heat-pressed for 15 minutes at 150 degreeC under the vacuum with a vacuum laminator, Then, the sealing material was bridge
- the test was performed with a pressure cooker tester under the condition that the sample was allowed to stand for 72 hours in an environment of a temperature of 121 ° C., a humidity of 100% RH, and a pressure of 2 kg / cm 2 .
- the conversion efficiency was calculated from the incident light energy, the output at the optimum operating point, and the area of the power generation element.
- the conversion efficiency of the power generation element alone was set to 100, and the conversion efficiency before the test of Sample 2 with respect to the conversion efficiency was defined as the initial conversion efficiency retention rate.
- unit was made into the conversion efficiency retention with time.
- the solar cell encapsulant using the composition for solar cell encapsulant of the present invention of Examples 18 to 36 has improved initial conversion efficiency when formed into a module as compared with the comparative example.
- the metal composition amount and the average plate surface diameter of the layered composite metal compound it is possible to maintain transparency, reduce filler activity, maintain adhesion with a protective member over time due to high acid / water capture effect, and improve conversion efficiency. The decrease can be suppressed.
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Abstract
Description
そのため、高い透明性、耐水性を備えるエチレン酢酸ビニル共重合体が、封止材として多く用いられている。しかしながら、エチレン酢酸ビニル共重合体は、熱・水等による劣化に伴う酸発生や、モジュール内に侵入した水蒸気により、透明性の悪化、電極配線の腐食、保護部材との密着性低下を誘発し、変換効率の低下を招くという問題があった。
(i)下記一般式(1)で表される層状複合金属化合物、
(ii)前記一般式(1)で表される層状複合金属化合物の焼成物、
(iii)下記一般式(2)で表される層状複合金属化合物,及び
(iv)前記一般式(2)で表わされる層状複合金属化合物の焼成物の少なくともいずれか1つを含有し、
前記(i)は、平均板面径が0.01μm以上、0.9μm以下であり、かつ屈折率が1.45以上、1.55以下であり、
前記(iii)は、平均板面径が0.02μm以上、0.9μm以下であり、かつ屈折率が1.48以上、1.6以下である太陽電池封止材用樹脂組成物に関する。
一般式(1)
Mg1-a・Ala(OH)2・Ann- a/n・bH2O
(0.2≦a≦0.35、0≦b≦1、An:n価の陰イオン)
一般式(2)
(McMg1-c)1-d・Ald(OH)2・Bmm- d/m・eH2O
(MはNi、Zn、及びCaより選ばれる金属を示し、c、d及びeはそれぞれ式0.2≦c≦1、0.2≦d≦0.4、0≦e≦4、Bm:m価の陰イオン)
本発明の太陽電池封止材用樹脂組成物は、エチレン共重合体(A)を含み、さらに、下記(i)~(iv)の少なくともいずれかを含有する。即ち、
(i)下記一般式(1)で表される層状複合金属化合物、
(ii)前記一般式(1)で表される層状複合金属化合物の焼成物、
(iii)下記一般式(2)で表される層状複合金属化合物,及び
(iv)前記一般式(2)で表される層状複合金属化合物の焼成物の少なくともいずれか1つを含有する。
一般式(1)
Mg1-a・Ala(OH)2・Ann- a/n・bH2O
(0.2≦a≦0.35、0≦b≦1、An:n価の陰イオン)
一般式(2)
(McMg1-c)1-d・Ald(OH)2・Bmm- d/m・eH2O
(MはNi、Zn、及びCaより選ばれる金属を示し、c、d及びeはそれぞれ式0.2≦c≦1、0.2≦d≦0.4、0≦e≦4、Bm:m価の陰イオン)
上記一般式(2)において、Alの含有量割合cは、0.2≦c≦0.4の範囲とすることが好ましい。0.2未満の場合、層状複合金属化合物を製造するのが難しく、0.4を超える場合、金属間のプラス荷電による反発が強くなりすぎ製造が難しい。水分含有量dは0≦d≦4が好ましい。
上記一般式(1)及び(2)におけるアニオンAnn-の種類は、特に限定されるものではないが、例えば、水酸化物イオン、炭酸イオン、ケイ酸イオン、有機カルボン酸イオン、有機スルフォン酸イオン、有機リン酸イオンなどが挙げられる。なお、一般式(1)における指数a、一般式(2)における指数cは、それぞれ層状複合金属化合物を酸で溶解し、「プラズマ発光分光分析装置 SPS4000(セイコー電子工業(株))」で分析して求めた。
また、本発明において、エチレン共重合体(A)は、成形性、機械的強度などを考慮すると、メルトフローレート(JIS K7210準拠)が0.1~60g/10minであることが好ましく、0.5~45g/10minがより好ましい。なおメルトフローレートは以下「MFR」という。
(A-1)東ソー社製(ウルトラセン751、エチレン酢酸ビニル共重合体、酢酸ビニル含有量:28%、MFR:5.7)
(A-2)東ソー社製(ウルトラセン637-1、エチレン酢酸ビニル共重合体、酢酸ビニル含有量:20%、MFR:8.0)
(A-3)三井・デュポンポリケミカル社製(エバフレックスV523、エチレン酢酸ビニル共重合体、酢酸ビニル含有量:33%、MFR:14)
(B-1)~(B-10)の化学組成は、表1に示した。
(B-11):層状複合金属化合物(B-1)を550℃で3時間熱処理した焼成物
(B-12):層状複合金属化合物(B-3)を400℃で4時間熱処理した焼成物
(B-13):層状複合金属化合物(B-4)を650℃で2時間半熱処理した焼成物
(B-14):層状複合金属化合物(B-6)を300℃で3時間半処理した焼成物
(B-15):層状複合金属化合物(B-18)を600℃で3時間半処理した焼成物
(B-19):層状複合金属化合物(B-17)を750℃で2時間半処理した焼成物
(C-1)~(C-15)の化学組成は、表2に示した。
(C-16):層状複合金属化合物(C-2)を450℃で2時間熱処理した焼成物
(C-17):層状複合金属化合物(C-3)を400℃で2時間熱処理した焼成物
(C-18):層状複合金属化合物(C-11)を350℃で1時間熱処理した焼成物
(C-19):層状複合金属化合物(C-6)を650℃で3時間熱処理した焼成物
(C-20):層状複合金属化合物(C-10)を350℃で1時間熱処理した焼成物
エチレン共重合体85重量部と層状複合金属化合物15重量部をスーパーミキサー(三井鉱山社製)に投入し温度20℃、時間3分の条件で撹拌した後、二軸押出し機(日本プラコン社製)により層状複合金属化合物マスターバッチを得た。また、太陽電池封止材用樹脂組成物と同様の方法により、エチレン共重合体80重量部に紫外線吸収剤10重量部、光安定剤5重量部、酸化防止剤5重量部を配合した安定化剤マスターバッチを得た。さらに、エチレン共重合体70重量部に架橋剤15重量部、架橋助剤15重量部、シランカップリング剤15重量部をスーパーミキサーで撹拌しながら、エチレン共重合体に含浸した架橋剤マスターバッチを得た。
得られた層状複合金属化合物マスターバッチと、安定化剤マスターバッチと、架橋剤マスターバッチと、エチレン共重合体(A)とを用いて、エチレン共重合体(A)と層状複合金属化合物若しくはその焼成物が表3の配合量となるように調製した。調製後、T-ダイ押出機で90℃にて押出し成形し、太陽電池封止材12A、12B、16、18、21(厚さ1.0mm)を作製した。
なお、架橋剤マスターバッチ、安定化剤マスターバッチは、表3の配合量であるエチレン共重合体と層状複合金属化合物の合計100重量部に対して、それぞれ10重量部の割合で配合した。架橋剤、架橋助剤、シランカップリング剤、光安定剤、酸化防止剤の種類は下記の通りである。
架橋剤:2,5-ジメチル-2,5-ジ(tert-ブチルパーオキシ)ヘキサン
架橋助剤:トリアリルイソシアヌレート
シランカップリング剤:γ-メタクリロキシプロピルトリメトキシシラン
紫外線吸収剤:2-ヒドロキシ-4-メトキシベンゾフェノン
光安定剤:N,N'-ビス(3-アミノプロピル)エチレンジアミン-2,4-ビス[N-ブチル-N-(1,2,2,6,6-ペンタメチル-4-ピペリジル)アミノ]-6-クロロ-1,3,5-トリアジン縮合物
酸化防止剤:フェニルジイソデシルホスファイト
それぞれ表3、4に示す配合とした以外は、実施例1と同様にして太陽電池封止材用樹脂組成物を調整して太陽電池封止材12A、12B、16、18、21を作成した。
図2に示すような耐久試験用サンプルを作製した。まず、実施例1~17で得られた太陽電池封止材16を、透明基板(ガラス 厚さ3mm)15と耐加水分解ポリエチレンテレフタレートフィルム(厚さ0.1mm)の保護部材17とで挟んで積層体にした。その後、真空ラミネーターによる真空下で、150℃、35分間加熱圧着し、封止材を架橋させ、耐久試験用サンプル(1)を作製した。また、図2に示す積層体を作製し、真空ラミネーターによる真空下で、150℃、15分間加熱圧着し、その後、オーブン内で150℃、15分間封止材を架橋させ、耐久試験用サンプル2を作製した。この耐久試験用サンプル(2)を加速試験により酸発生の速度を促進させた後、酸発生量を測定した。
図4に示すように、実施例1~17及び比較例1~13で得られた太陽電池封止材21と、耐加水分解ポリエチレンテレフタレートフィルム(厚さ0.1mm)の保護部材22とを2層に積層した。その後、真空ラミネーターによる真空下で、150℃、35分間加熱し、封止材を架橋させ、耐久試験用サンプル(3)を作製した。耐久試験前、試験後のヘーズ値をBYK Gardner製ヘーズメーターにより測定した。
図4に示すように、実施例1~17及び比較例1~13で得られた太陽電池封止材21と耐加水分解ポリエチレンテレフタレートフィルム(厚さ0.1mm)の保護部材22とを2層に積層した。その後、真空ラミネーターによる真空下で、150℃、35分間加熱し、封止材を架橋させ、耐久試験用サンプル4を作製した。耐久試験前、試験後の保護部材との密着性を剥離試験による剥離強度により測定した。
実施例1~17及び比較例1~13で得られた太陽電池封止材12A、12Bを用いて発電素子を挟み込み、図1に示すように透明基板(ガラス 厚さ3mm)11と耐加水分解ポリエチレンテレフタレート/アルミ/耐加水分解ポリエチレンテレフタレートの3層(厚さ1.0mm)の保護部材14とで挟んで積層体にした。次いで、真空ラミネーターによる真空下で、150℃、40分間加熱し、封止材を架橋させ、サンプル1を作製した。試験はサンプル1を恒温恒湿試験機にて、85℃85%RHの環境下、1000時間静置の条件で行った。変換効率は、入光エネルギーと最適動作点での出力と、発電素子の面積から算出した。評価は、サンプル1から層状複合金属化合物を除いて作成した基準サンプルの初期変換効率を100とした。そして初期変換効率に対するサンプル1の試験後の変換効率を基準保持率とした。
実施例1~17及び比較例1~13で得られた太陽電池封止材12A、12Bを用いて発電素子を挟み込み、図1に示すように透明基板(ガラス 厚さ3mm)11と耐加水分解ポリエチレンテレフタレート/アルミ/耐加水分解ポリエチレンテレフタレートの3層(厚さ1.0mm)の保護部材14とで挟んで積層体にした。次いで、真空ラミネーターによる真空下で、150℃で15分間加熱圧着した。その後、オーブン内で150℃、15分間封止材を架橋させ、サンプル2を作製した。試験は、プレッシャークッカー試験機により、サンプル2を温度121℃、湿度100%RH、圧力2kg/cm2の環境下、72時間静置の条件で行った。変換効率は、入光エネルギーと最適動作点での出力と、発電素子の面積から算出した。評価は、発電素子単体の変換効率を100として、その変換効率に対するサンプル2の試験前の変換効率を初期変換効率保持率とした。そして、発電素子単体の変換効率に対するサンプル2の試験後の変換効率を経時変換効率保持率とした。
エチレン共重合体85重量部と層状複合金属化合物15重量部とをスーパーミキサー(三井鉱山社製)に投入し温度20℃、時間3分の条件で撹拌した後、二軸押出し機(日本プラコン社製)により層状複合金属化合物マスターバッチを得た。また、エチレン共重合体に架橋剤、架橋助剤、シランカップリング剤を配合した架橋剤マスターバッチと、エチレン共重合体に紫外線吸収剤、光安定剤、酸化防止剤を配合した安定化剤マスターバッチを得た。
得られた層状複合金属化合物マスターバッチと、架橋剤マスターバッチと、安定化剤マスターバッチと、エチレン共重合体とを用いて、エチレン共重合体(A)と層状複合金属化合物若しくはその焼成物が表6の配合量となるように調製した。調製後、T-ダイ押出機で90℃にて押出し成形し、太陽電池封止材12A、12B、16、18、21(厚さ0.5mm)を作製した。
なお、太陽電池封止材中の架橋剤、架橋助剤、シランカップリング剤、紫外線吸収剤、光安定剤、酸化防止剤の種類と添加量は、エチレン共重合体と層状複合金属化合物の合計100重量部対して下記の通りに用いた。
架橋剤:2,5-ジメチル-2,5-ジ(tert-ブチルパーオキシ)ヘキサン0.5重量部
架橋助剤:トリアリルイソシアヌレート0.5重量部
シランカップリング剤:γ-メタクリロキシプロピルトリメトキシシラン0.5重量部
紫外線吸収剤:2-ヒドロキシ-4-メトキシベンゾフェノン0.25質量部
光安定剤:N,N'-ビス(3-アミノプロピル)エチレンジアミン-2,4-ビス[N-ブチル-N-(1,2,2,6,6-ペンタメチル-4-ピペリジル)アミノ]-6-クロロ-1,3,5-トリアジン縮合物0.5質量部
酸化防止剤:フェニルジイソデシルホスファイト0.25質量部
それぞれ表6、7に示す配合とした以外は、実施例18と同様にして太陽電池封止材用樹脂組成物を調整して太陽電池封止材12A、12B、16、18、21を作製した。
図2に示すような耐久試験用サンプルを作製した。まず、実施例18~36及び比較例14~23で得られた太陽電池封止材16を、透明基板(ガラス 厚さ3mm)15と耐加水分解ポリエチレンテレフタレートフィルム(厚さ0.1mm)の保護部材17とで挟んで積層体とした。その後、真空ラミネーターによる真空下で、150℃、15分間加熱圧着した。次いで、オーブン内で150℃、15分間封止材を架橋させ、耐久試験用サンプルを作製し、加速試験により酸発生の速度を促進させた後、酸発生量を測定した。
実施例18~36及び比較例14~23で得られた太陽電池封止材18を、透明基板(ガラス 厚さ3mm)19、20で挟み込み、3層にした(図3参照)。その後、真空ラミネーターによる真空下で、150℃、15分間加熱圧着した。次いで、オーブン内で150℃、15分間封止材を架橋させ、耐久試験用サンプルを作製し、加速試験前、試験後のヘーズ値をBYK Gardner製ヘーズメーターにより測定した。
図4に示すように、実施例18~36及び比較例14~23で得られた太陽電池封止材21と耐加水分解ポリエチレンテレフタレートフィルム(厚さ0.1mm)の保護部材22とを2層に積層した。次いで、真空ラミネーターによる真空下で、150℃、15分間加熱圧着し、その後、オーブン内で150℃15分間保持し封止材を架橋させることで、耐久試験用サンプルを作製した。そして耐久試験後の太陽電池封止材と保護部材との密着性を剥離試験により測定した。
実施例18~36及び比較例14~23で得られた太陽電池封止材12A、12Bを用いて発電素子を挟み込み、図1に示すように透明基板(ガラス 厚さ3mm)11と耐加水分解ポリエチレンテレフタレート/アルミ/耐加水分解ポリエチレンテレフタレートの3層(厚さ1.0mm)の保護部材14とで挟んで積層体にした。次いで、真空ラミネーターによる真空下で、150℃、15分間加熱圧着した。その後、オーブン内で150℃15分間保持し封止材を架橋させることで、太陽電池モジュールサンプルを作製した。試験はサンプルを、85℃85%RHの環境下、1000時間静置の条件で行った。
変換効率は、入光エネルギーと最適動作点での出力と、発電素子の面積から算出した。評価は、サンプルから層状複合金属化合物を除いて作成した基準サンプルの初期変換効率を100とした。そして初期変換効率に対するサンプルの試験後の変換効率を基準保持率とした。
実施例18~36及び比較例14~23で得られた太陽電池封止材12A、12Bを用いて発電素子を挟み込み、図1に示すように透明基板(ガラス 厚さ3mm)11と耐加水分解ポリエチレンテレフタレート/アルミ/耐加水分解ポリエチレンテレフタレートの3層(厚さ1.0mm)の保護部材14とで挟んで積層体にした。次いで、真空ラミネーターによる真空下で、150℃で15分間加熱圧着し、その後、オーブン内で150℃、15分間封止材を架橋させ、太陽電池モジュールサンプルを作製した。試験は、プレッシャークッカー試験機により、サンプルを温度121℃、湿度100%RH、圧力2kg/cm2の環境下、72時間静置の条件で行った。変換効率は、入光エネルギーと最適動作点での出力と、発電素子の面積から算出した。
評価は、発電素子単体の変換効率を100として、その変換効率に対するサンプル2の試験前の変換効率を初期変換効率保持率とした。そして、発電素子単体の変換効率に対するサンプル2の試験後の変換効率を経時変換効率保持率とした。
12A 表面太陽電池封止材
12B 裏面太陽電池封止材
13 発電素子
14 保護部材
15 透明基板
16 封止材
17 保護部材
18 封止材
19 透明基板
20 透明基板
21 封止材
22 保護部材
Claims (12)
- エチレン共重合体(A)を含む太陽電池封止材用樹脂組成物であって、
(i)下記一般式(1)で表される層状複合金属化合物、
(ii)前記一般式(1)で表される層状複合金属化合物の焼成物、
(iii)下記一般式(2)で表される層状複合金属化合物,及び
(iv)前記一般式(2)で表される層状複合金属化合物の焼成物の少なくともいずれか1つを含有し、
前記(i)は、平均板面径が0.01μm以上、0.9μm以下であり、かつ屈折率が1.45以上、1.55以下であり、
前記(iii)は、平均板面径が0.02μm以上、0.9μm以下であり、かつ屈折率が1.48以上、1.6以下である太陽電池封止材用樹脂組成物。
一般式(1)
Mg1-a・Ala(OH)2・Ann- a/n・bH2O
(0.2≦a≦0.35、0≦b≦1、An:n価の陰イオン)
一般式(2)
(McMg1-c)1-d・Ald(OH)2・Bmm- d/m・eH2O
(MはNi、Zn、及びCaより選ばれる金属を示し、c、d及びeはそれぞれ式0.2≦c≦1、0.2≦d≦0.4、0≦e≦4、Bm:m価の陰イオン) - 前記(i)~(iv)は、酢酸の吸着量が、それぞれ0.1μmol/g以上、0.8μmol/g以下であることを特徴とする請求項1記載の太陽電池封止材用樹脂組成物。
- 前記(ii)は前記(i)を、前記(iv)は前記(iii)を、それぞれ200℃以上、800℃以下で熱処理した焼成物であることを特徴とする請求項1又は2に記載の太陽電池封止材用樹脂組成物。
- 前記エチレン共重合体(A)100重量部に対して、前記(i)~(iv)からなる群より選択される1種以上の化合物を0.01重量部以上、20重量部以下用いることを特徴とする請求項1~3いずれか1項に記載の太陽電池封止材用樹脂組成物。
- 前記(i)の23℃、50%RH環境下における平衡吸水率の80%に達するまでの時間が120分以下であることを特徴とする請求項1~4のいずれか1項に記載の太陽電池封止材用樹脂組成物。
- 前記(ii)は、屈折率が1.59以上、1.69以下であり、23℃50%RH環境下で2000時間静置した時の吸水率が10%以上、85%以下であることを特徴とする請求項1~5のいずれか1項に記載の太陽電池封止材用樹脂組成物。
- 前記(i)のBET比表面積が5m2/g以上、200m2/g以下であることを特徴とする請求項1~6のいずれか1項に記載の太陽電池封止材用樹脂組成物。
- 前記(iv)は、平均板面径が0.02μm以上、0.9μm以下であり、かつ屈折率が1.58以上、1.72以下であることを特徴とする請求項1~7のいずれか1項に記載の太陽電池封止材用樹脂組成物。
- 前記エチレン共重合体(A)が、エチレン酢酸ビニル共重合体、エチレンアクリル酸メチル共重合体、エチレンアクリル酸エチル共重合体、エチレンメタクリル酸メチル共重合体、及びエチレンメタクリル酸エチル共重合体からなる群より選択される1種以上の共重合体であることを特徴とする請求項1~8のいずれか1項に記載の太陽電池封止材用樹脂組成物。
- 請求項1~9のいずれか1項に記載の太陽電池封止材用樹脂組成物から形成してなるマスターバッチ。
- 請求項1~9のいずれか1項に記載の太陽電池封止材用樹脂組成物を含む混合物を用いて形成してなる太陽電池封止材。
- 請求項1~9のいずれか1項に記載の太陽電池封止材用樹脂組成物を用いて形成してなる太陽電池モジュール。
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JP2015211189A (ja) * | 2014-04-30 | 2015-11-24 | 日本ポリエチレン株式会社 | 太陽電池封止材用樹脂組成物、並びにそれを用いた太陽電池封止材及び太陽電池モジュール |
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EP2087526B1 (en) * | 2006-11-08 | 2011-12-21 | Bridgestone Corporation | Sealing films for solar cell |
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- 2010-08-04 EP EP10806233.2A patent/EP2463917A4/en not_active Withdrawn
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- 2010-08-04 WO PCT/JP2010/004913 patent/WO2011016233A1/ja active Application Filing
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- 2010-08-04 CN CN2013102043312A patent/CN103333398A/zh active Pending
- 2010-08-04 CN CN2010800064639A patent/CN102325839B/zh active Active
- 2010-08-04 KR KR1020117019435A patent/KR101327152B1/ko active IP Right Grant
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Cited By (10)
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WO2011102242A1 (ja) * | 2010-02-18 | 2011-08-25 | 株式会社ブリヂストン | 太陽電池用封止膜及びこれを用いた太陽電池 |
JP5914323B2 (ja) * | 2010-02-18 | 2016-05-11 | 株式会社ブリヂストン | 太陽電池用封止膜及びこれを用いた太陽電池 |
WO2012118085A1 (ja) * | 2011-02-28 | 2012-09-07 | 京セラ株式会社 | 太陽電池装置およびその製造方法 |
WO2013186992A1 (ja) * | 2012-06-14 | 2013-12-19 | 三井化学東セロ株式会社 | 太陽電池封止材および太陽電池モジュール |
CN104334631A (zh) * | 2012-06-14 | 2015-02-04 | 三井化学东赛璐株式会社 | 太阳能电池密封材及太阳能电池模块 |
JPWO2013186992A1 (ja) * | 2012-06-14 | 2016-02-04 | 三井化学東セロ株式会社 | 太陽電池封止材および太陽電池モジュール |
WO2015111702A1 (ja) * | 2014-01-23 | 2015-07-30 | 株式会社ブリヂストン | 太陽電池用封止膜及びこれを用いた太陽電池 |
CN106414592A (zh) * | 2014-01-23 | 2017-02-15 | 株式会社普利司通 | 太阳能电池用密封膜和使用其的太阳能电池 |
JP2015211189A (ja) * | 2014-04-30 | 2015-11-24 | 日本ポリエチレン株式会社 | 太陽電池封止材用樹脂組成物、並びにそれを用いた太陽電池封止材及び太陽電池モジュール |
JP2017069376A (ja) * | 2015-09-30 | 2017-04-06 | 宇部興産株式会社 | 太陽電池モジュール及びその製造方法 |
Also Published As
Publication number | Publication date |
---|---|
BRPI1006667A2 (pt) | 2019-09-24 |
TW201114820A (en) | 2011-05-01 |
CN102325839B (zh) | 2013-07-03 |
CN102325839A (zh) | 2012-01-18 |
CN103333398A (zh) | 2013-10-02 |
EP2463917A4 (en) | 2014-06-04 |
EP2463917A1 (en) | 2012-06-13 |
US20120016067A1 (en) | 2012-01-19 |
KR20110107389A (ko) | 2011-09-30 |
AU2010280195A1 (en) | 2011-11-17 |
SG175413A1 (en) | 2011-12-29 |
KR101327152B1 (ko) | 2013-11-06 |
CA2757215A1 (en) | 2011-02-10 |
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