WO2007119767A1 - 熱可塑性樹脂組成物、太陽電池封止用シートおよび太陽電池 - Google Patents
熱可塑性樹脂組成物、太陽電池封止用シートおよび太陽電池 Download PDFInfo
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- WO2007119767A1 WO2007119767A1 PCT/JP2007/058034 JP2007058034W WO2007119767A1 WO 2007119767 A1 WO2007119767 A1 WO 2007119767A1 JP 2007058034 W JP2007058034 W JP 2007058034W WO 2007119767 A1 WO2007119767 A1 WO 2007119767A1
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- propylene
- solar cell
- thermoplastic resin
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- ZMMYZOSYBMIWIR-UHFFFAOYSA-N 2,2,4-trimethyl-4-(2,4,4-trimethylpentan-2-ylperoxy)pentane Chemical compound CC(C)(C)CC(C)(C)OOC(C)(C)CC(C)(C)C ZMMYZOSYBMIWIR-UHFFFAOYSA-N 0.000 description 1
- DFZYPLLGAQIQTD-UHFFFAOYSA-N 2,7-ditert-butyl-9h-fluorene Chemical compound CC(C)(C)C1=CC=C2C3=CC=C(C(C)(C)C)C=C3CC2=C1 DFZYPLLGAQIQTD-UHFFFAOYSA-N 0.000 description 1
- RYUQEOZKTRJRDE-UHFFFAOYSA-N 2-ethylhexanoic acid;2,2,4-trimethyl-4-(2,4,4-trimethylpentan-2-ylperoxy)pentane Chemical compound CCCCC(CC)C(O)=O.CC(C)(C)CC(C)(C)OOC(C)(C)CC(C)(C)C RYUQEOZKTRJRDE-UHFFFAOYSA-N 0.000 description 1
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- WKRJCCZAZDZNJL-UHFFFAOYSA-N 2-methoxyethoxysilicon Chemical compound COCCO[Si] WKRJCCZAZDZNJL-UHFFFAOYSA-N 0.000 description 1
- XDLMVUHYZWKMMD-UHFFFAOYSA-N 3-trimethoxysilylpropyl 2-methylprop-2-enoate Chemical compound CO[Si](OC)(OC)CCCOC(=O)C(C)=C XDLMVUHYZWKMMD-UHFFFAOYSA-N 0.000 description 1
- XZOYHFBNQHPJRQ-UHFFFAOYSA-N 7-methyloctanoic acid Chemical compound CC(C)CCCCCC(O)=O XZOYHFBNQHPJRQ-UHFFFAOYSA-N 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 108700018427 F 327 Proteins 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 235000005135 Micromeria juliana Nutrition 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 241000246354 Satureja Species 0.000 description 1
- 235000007315 Satureja hortensis Nutrition 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical group CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- 239000001273 butane Substances 0.000 description 1
- IAQRGUVFOMOMEM-UHFFFAOYSA-N butene Natural products CC=CC IAQRGUVFOMOMEM-UHFFFAOYSA-N 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- HPXRVTGHNJAIIH-UHFFFAOYSA-N cyclohexanol Chemical compound OC1CCCCC1 HPXRVTGHNJAIIH-UHFFFAOYSA-N 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- IPZJQDSFZGZEOY-UHFFFAOYSA-N dimethylmethylene Chemical group C[C]C IPZJQDSFZGZEOY-UHFFFAOYSA-N 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- HARQWLDROVMFJE-UHFFFAOYSA-N ethyl 3,3-bis(tert-butylperoxy)butanoate Chemical compound CCOC(=O)CC(C)(OOC(C)(C)C)OOC(C)(C)C HARQWLDROVMFJE-UHFFFAOYSA-N 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- XMGMFRIEKMMMSU-UHFFFAOYSA-N phenylmethylbenzene Chemical group C=1C=CC=CC=1[C]C1=CC=CC=C1 XMGMFRIEKMMMSU-UHFFFAOYSA-N 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000011949 solid catalyst Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- DLSMLZRPNPCXGY-UHFFFAOYSA-N tert-butylperoxy 2-ethylhexyl carbonate Chemical compound CCCCC(CC)COC(=O)OOOC(C)(C)C DLSMLZRPNPCXGY-UHFFFAOYSA-N 0.000 description 1
- MCULRUJILOGHCJ-UHFFFAOYSA-N triisobutylaluminium Chemical compound CC(C)C[Al](CC(C)C)CC(C)C MCULRUJILOGHCJ-UHFFFAOYSA-N 0.000 description 1
- HQYALQRYBUJWDH-UHFFFAOYSA-N trimethoxy(propyl)silane Chemical compound CCC[Si](OC)(OC)OC HQYALQRYBUJWDH-UHFFFAOYSA-N 0.000 description 1
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
- VPGLGRNSAYHXPY-UHFFFAOYSA-L zirconium(2+);dichloride Chemical compound Cl[Zr]Cl VPGLGRNSAYHXPY-UHFFFAOYSA-L 0.000 description 1
Classifications
-
- 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
- C08L23/10—Homopolymers or copolymers of propene
-
- 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
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
-
- 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
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/14—Copolymers of propene
- C08L23/142—Copolymers of propene at least partially crystalline copolymers of propene with other olefins
-
- 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
- H01L31/02—Details
- H01L31/0203—Containers; Encapsulations, e.g. encapsulation of photodiodes
-
- 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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2312/00—Crosslinking
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2312/00—Crosslinking
- C08L2312/08—Crosslinking by silane
-
- 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
- Thermoplastic resin composition Thermoplastic resin composition, solar cell sealing sheet and solar cell
- the present invention relates to a sheet for sealing solar cells between front and back materials having a plate-like material or sheet-like material such as glass and plastic, and in particular, a non-bridge solar that can be thermally laminated at a low temperature.
- the present invention relates to a battery sealing sheet.
- an ethylene / butyl acetate copolymer (abbreviated as EVA) containing an organic peroxide is a flexible and transparent resin. It is generally used because it has excellent long-term durability by adding additives such as an appropriate weathering stabilizer and adhesion promoter.
- EVA has a problem of insufficient heat resistance such as thermal deformation at the environmental temperature where a solar cell module with a low melting point is used. By forming a cross-linked structure, heat resistance can be expressed.
- the solar cell encapsulating sheet is produced by a known sheet forming method capable of forming a polyolefin.
- the above-described organic peroxide is added. The problem is that molding at low temperatures is forced and high-speed productivity is hindered.
- the present inventors have been working on the development of a solar cell encapsulating sheet that can be used even in non-crosslinking based on a polypropylene or propylene-based copolymer having excellent heat resistance. According to the study by the present inventors, such a solar cell encapsulating sheet based on a polypropylene or propylene-based copolymer produces a solar cell while exhibiting good flexibility and heat resistance.
- Thermal lamination process for solar cell power generation module and solar cell encapsulating sheet of the present invention, as well as glass or back sheet, and bonding or fusing by heating
- Possible temperature range is very narrow The existence of this problem has become a force.
- the temperature is as low as possible (specifically, 160 ° C or lower, more preferably It is desirable to be able to heat laminate at temperatures below 160 ° C.
- Patent Document 2 also describes that heat-transparent resin is heat-laminated in the range of 120 ° C to 160 ° C.
- Patent Document 1 JP 2000-91611 A
- Patent Document 2 Japanese Patent Laid-Open No. 11-163377
- An object of the present invention is to provide practically sufficient heat resistance while having fluidity that can be molded. Another object is to provide a thermoplastic resin composition that does not generate white turbidity even when it is heat laminated at a low temperature, and a solar cell encapsulating sheet comprising the same.
- the first thermoplastic ⁇ composition of the present invention the following (i) ⁇ propylene alkylene polymer with the features of (ii) (A) 1 ⁇ 95 wt 0/0, and propylene least Propylene copolymer having a melting point of less than 80 ° C or no melting point observed with a differential scanning calorimeter. Combined (B) 5 to 99% by weight (the sum of (A) and (B) is 100% by weight).
- Propylene polymer (A) features:
- thermoplastic resin composition of the present invention In the first thermoplastic resin composition of the present invention,
- the propylene polymer (A) further satisfies the following (iii):
- the first thermoplastic resin composition of the present invention comprises a coupling agent (Y) with respect to a total of 100 parts by weight of the propylene polymer (A) and the propylene copolymer (B). Of 0.1 to 5 parts by weight.
- the first thermoplastic resin composition preferably has an MFR at 230 ° C of 0.05 g / 10 min or more.
- thermoplastic resin composition obtained by kneading is a preferred embodiment of the present invention.
- the second thermoplastic resin composition preferably has an MFR at 230 ° C of 0.05 gZlO or more.
- the first thermoplastic resin composition and the second thermoplastic resin composition are preferably used for sealing V, both of which are solar cells.
- the solar cell sealing sheet of the present invention comprises the first thermoplastic resin composition or the second thermoplastic resin composition.
- the solar cell of the present invention uses the solar cell sealing sheet.
- the third thermoplastic ⁇ composition of the present invention the following (ia) and propylene alkylene polymer satisfying (iia) (AA) 1 ⁇ 95 wt 0/0, and propylene and at least one Propylene copolymer (BB), which is a copolymer with 2 to 20 carbon atoms excluding propylene and has a melting point of less than 80 ° C or no observed melting point on a differential scanning calorimeter. ) 5 to 99% by weight.
- the propylene-based copolymer (BB) is preferably the following propylene “ethylene” a-olefin copolymer (BB-1). Yes;
- Propylene 'ethylene' a- Orefuin copolymer (BB- 1) is a structural unit 45-92 mole 0/0 from propylene, the constitutional unit 25 mol 0/0 derived from ethylene, having 4 to 20 carbon atoms ⁇ — Consists of 3 to 30 mol% structural units derived from olefin, and the melting point observed with a differential scanning calorimeter is less than 80 ° C or no melting point is observed.
- a coupling agent (Y) with respect to a total of 100 parts by weight of the propylene polymer (AA) and the propylene copolymer (BB). 0.1 to 5 parts by weight may be blended.
- the third thermoplastic resin composition of the present invention preferably has an MFR at 230 ° C of 0.05 g / 10 min or more.
- the third thermoplastic resin composition is suitably used for solar cell sealing.
- Another solar cell sealing sheet of the present invention is composed of the third thermoplastic resin composition.
- Another solar cell of the present invention uses a solar cell encapsulating sheet that also has the third thermoplastic resin composition strength of the present invention.
- thermoplastic resin composition or the second thermoplastic resin composition of the present invention By using the first thermoplastic resin composition or the second thermoplastic resin composition of the present invention, it has practically sufficient heat resistance while having fluidity that can be molded. At the same time, it is possible to provide a solar cell encapsulating sheet that does not cause white turbidity even when thermally laminated at a low temperature. By using this solar cell encapsulating sheet, it becomes possible for the solar cell to expand the temperature range in which thermal lamination can be performed during production, specifically, thermal lamination can be performed at a lower temperature. Damage to other components (power generation module and surface protective layer) can be reduced.
- thermoplastic resin composition obtained by combining the coupling agent (Y) is a thermoplastic resin composition having excellent adhesion to the adherend.
- the second thermoplastic resin composition is also a thermoplastic resin composition having excellent adhesion to the adherend.
- thermoplastic resin composition of the present invention By using the third thermoplastic resin composition of the present invention, while having fluidity to the extent that it can be molded, it has practically sufficient heat resistance and is cloudy even when thermally laminated at a low temperature. It is possible to provide a solar cell encapsulating sheet that does not occur. By using this solar cell encapsulating sheet, it becomes possible to widen the temperature range in which solar cells can be heat-laminated during production, and more specifically, it is possible to heat laminate at lower temperatures. Damage to the (power generation module and surface protective layer) can be reduced. In addition, since a cross-linking step that loses the fluidity of the resin is not necessary for the development of heat resistance, the manufacturing time of the solar cell can be greatly shortened and the recycling of the used solar cell can be facilitated. Is possible.
- Fig. 1 shows the temperature increase rate for 20 ° CZ of the propylene polymer (A-1) used in the examples. This is the DSC curve when the temperature is increased from 150 ° C to 200 ° C.
- FIG. 2 is a DSC curve of the propylene polymer (A-2) used in the examples.
- FIG. 3 is a DSC curve of the propylene polymer (A-3) used in the examples.
- FIG. 4 is a DSC curve of the propylene polymer (A-4) used in the examples.
- FIG. 5 shows an example of a form to which the solar cell encapsulating sheet of the present invention is applied.
- FIG. 6 shows a heat test sample used in Example 11 and Comparative Example 11.
- FIG. 7 shows a glass adhesion test sample used in Example 11 and Comparative Example 11.
- propylene polymer (A) used in the present invention examples include a propylene homopolymer or a copolymer of propylene and at least one ⁇ -olefin having 2 to 20 carbon atoms other than propylene.
- ⁇ -olefin having 2 to 20 carbon atoms other than propylene includes ethylene, 1-butene, 1-pentene, 1-hexene, 4-methinole-1-pentene, 1-octene and 1-decene. , 1-dodecene, 1-tetradecene, 1-hexadecene, 1-octadecene, 1-eicosene, etc.
- ethylene or ⁇ and the number of carbon atoms is 4 to: LO and a-olefin Polymers can be preferably used
- alpha - Orefin force constituent units also derived is 35 mole 0/0 or less in the polypropylene, preferably 20 mole 0/0 (where the constituent units derived from propylene, 2-20 carbon a- It may be contained in the following proportions: the total of the units derived from olefins (excluding propylene) is 100 mol%).
- two or more structural units derived from a-olefin other than propylene may be included.
- ⁇ -olefins may form a random copolymer or a block copolymer with propylene, but in the present invention, they form a random copolymer. Therefore, it can be preferably used.
- a random copolymer of propylene and an aolefin having 2 to 20 carbon atoms (excluding propylene) is preferred.
- the content of the constitutional unit derived from Inn is 1 to 7.5 moles 0/0 it is more preferably a preferred instrument 2 to 7 mole 0/0 a tool from 2.5 to 6.5 mol% More preferably.
- the propylene polymer (A) has a melt flow rate (MFR) measured at 230 ° C and a load of 2.16 kg in accordance with ASTM D1238 of 0.01 to: LOOOgZlO, preferably 0. 0 5-: It is desirable to be in the range of LOOgZlO minutes.
- MFR melt flow rate
- the melting point of the propylene polymer (A) of the present invention (A), which is observed by a differential scanning calorimeter (DSC) (the endothermic curve peak indicating melting of the propylene polymer crystal) is 80 to 135 ° C.
- DSC differential scanning calorimeter
- D value on the vertical axis at the peak position of the melting point (maximum melting point)
- Dl and D2 are defined as follows, and when these satisfy the formula (1), preferably the formula (1 ′), no endotherm due to crystal melting is observed in the region of 140 ° C or higher. It will be.
- sample used for the measurement was placed on top and bottom of a 4mm thick SUS mold, heated at 190 ° C, Z-pressurized, and rapidly cooled with a cooling chiller at 20 ° C. It is a press sheet that has passed 72 hours or more after molding.
- the propylene-based polymer (A) of the present invention has a melting point Tm observed with a differential scanning calorimeter (DSC) and a Vicat soft temperature Tv measured according to ASTM D1525 according to the following formula: (2), preferably those satisfying the relationship of formula (2) ′.
- Tm 80 ° C to 135 ° C.
- the propylene polymer (A) having the above (i) melting point of 135 ° C or less and satisfying (ii) means having a narrow V ⁇ composition distribution, that is, a narrow melting point distribution.
- thermoplastic resin composition of the present invention using such a propylene-based polymer (A) does not become cloudy and has good transparency even when the temperature at which calo-thermal lamination is performed is lower. Can be maintained.
- the propylene polymer (A) having a uniform composition (i) has a melting point of 135 ° C or lower, satisfies (ii), and further satisfies the above relationship between the melting point Tm and the Vicat soft temperature Tv. It means that it is formed from molecules with a distribution.
- the Vicat soft temperature Tv of polypropylene is lower than the melting point Tm.
- polypropylene having a wide composition distribution tends to have a large difference between the melting point Tm and the Vicat soft temperature Tv.
- the melting point Tm and the Vicat soft temperature Tv satisfy the relationship of the above formula (the difference between the melting point Tm and the Vicat soft temperature Tv is small).
- V means having a composition distribution.
- the sample used for the measurement of the Vicat softening point was a 4mm thick SUS-powered mold installed at the top and bottom, heated at 190 ° C, Z-pressurized, and this was cooled to 20 ° C. This is a press sheet that has been cooled for a while and then molded, and 72 hours have passed.
- thermoplastic resin composition of the present invention using such a propylene-based polymer (A) does not become cloudy even when heated and laminated in the vicinity of the melting point (that is, around 150 ° C). Transparency can be maintained.
- polypropylene-based polymer (A) does not have a high-melting-point component (that is, a component that exhibits endotherm at 135 ° C or higher) because it has a uniform composition distribution. This is presumed to be because the crystal lamellae formed at the time of conversion to a uniform crystal domain size.
- the propylene-based polymer (A) of the present invention can use either a isotactic structure or a syndiotactic structure. Further, if necessary, a plurality of propylene polymers (A) can be used in combination, for example, by using two or more components having different melting points, rigidity, and molecular weights.
- the propylene-based polymer (A) as described above is, for example, a Ziegler catalyst system comprising a solid catalyst component containing magnesium, titanium, halogen and an electron donor as essential components, an organoaluminum compound, and an electron donor.
- propylene is polymerized in a meta-mouth catalyst system using a meta-mouth compound as a component of the catalyst, or the force obtained by copolymerizing propylene and other ⁇ -olefins.
- Polymers obtained by polymerization with a meta-octene catalyst system using the product as a component of the catalyst can be preferably used as the propylene polymer ( ⁇ ) having the above characteristics.
- the metallocene catalyst to be used a known metallocene compound capable of polymerizing ⁇ -olefin, an organoaluminum oxide compound, and a metal or metallocene compound may be used. It is a meta-catacene catalyst consisting of a compound capable of forming an ion pair in response, preferably because of stereoregular polymerization such as biisotactic or syndiotactic structure. Can be mentioned. For example, it can be produced using a catalyst described in International Publication No. 27124 Pamphlet or JP-A-2006-52313. Preferred examples of a-olefin used together with propylene during copolymerization include ethylene, 1-butene, 1-pentene, 1-hexene, 4-methyl 1-pentene and 1-octene. .
- the propylene copolymer (B) in the present invention is a copolymer of propylene and a-olefin having up to 2 to 20 carbon atoms excluding at least one propylene, and is observed by a differential scanning calorimeter DSC. Melting point is below 80 ° C or no melting point is observed. Here, the fact that the melting point is not observed means that a crystal melting peak having a heat of crystal melting of 1 jZg or more is not observed in the range of 150 to 200 ° C.
- the measurement conditions are as described in the examples.
- the propylene-based copolymer (B) used in the present invention has a melting point measured by DSC of 60 ° C or lower, or preferably no melting point is observed. I like it.
- the a-olefin used as the comonomer is preferably ethylene and Z or ⁇ -olefin having 4 to 20 carbon atoms.
- Propylene-based copolymer of the present invention is the propylene unit 45-92 mole 0/0, preferably comprises 56 to 90 mole 0/0, as the content of ⁇ - Orefuin used as a comonomer,
- the propylene-based copolymer ( ⁇ ) of the present invention has a load of 230 ° C and a load according to ASTM D1238.
- melt flow rate (MFR) measured at 16 kg is in the range of 0.01 to: LOOOgZlO, preferably 0.05 to 50 g / 10 minutes.
- the production method of the propylene-based copolymer (B) in the present invention is not particularly limited, and stereoregularity is used so that the force olefin is in a isotactic or syndiotactic structure.
- Propylene in the presence of a known catalyst that can be polymerized, for example, a catalyst comprising a solid titanium component and an organometallic compound as main components, or a metalocene catalyst using a metalocene compound as a component of the catalyst.
- a catalyst that can be polymerized
- a catalyst comprising a solid titanium component and an organometallic compound as main components
- a metalocene catalyst using a metalocene compound as a component of the catalyst.
- other a-olefins can be copolymerized.
- the catalyst of International Publication 2004-087775 for example, the same The catalyst described in Examples le to 5e in the pamphlet of the issue can be used.
- the propylene-based copolymer (B) of the present invention preferably has the following performances independently and additionally.
- the triad tacticity (mm fraction) measured by 13 C-NMR is preferably 85% or more, more preferably 85-97.5%, still more preferably 87-97%, and particularly preferably 90- It is in the range of 97%.
- the mm fraction can be measured using the method described on page 21 line 7 to page 26 line 6 of WO 2004-087775.
- the Shore A hardness of the propylene-based copolymer (B) of the present invention is not particularly limited, but is usually in the range of 30 to 80, preferably 35 to 75.
- the propylene copolymer (B) in the present invention was measured according to JIS K6301 using a JI S3 dumbbell at a span interval of 30 mm and a pulling speed of 30 mm Zmin at 23 ° C.
- Stress at 100% strain (M100) force Usually 4 MPa or less, preferably 3 MPa or less, and more preferably 2 MPa or less.
- M100 strain at 100% strain
- the propylene-based copolymer (B) in the present invention usually has a crystallinity force measured by X-ray diffraction of 20% or less, preferably 0 to 15%.
- the propylene copolymer in the present invention has a single glass transition temperature, and has a glass transition temperature Tg force measured by a differential scanning calorimeter (DSC), usually ⁇ 10 ° C. or less. Preferably it is in the range of -15 ° C or lower.
- DSC differential scanning calorimeter
- the glass transition temperature Tg of the propylene-based copolymer (B) in the present invention is within the above range. Then, it is excellent in cold resistance and low temperature characteristics.
- the propylene-based copolymer (B) in the present invention usually has a heat of fusion ⁇ of 30 J.
- the following relational expression is established in relation to the relationship between the C3 content (mol%) and the heat of fusion ⁇ HQ / g).
- the molecular weight distribution (Mw ZMn, polystyrene conversion, Mw: weight average molecular weight, Mn: number average molecular weight) of the propylene copolymer (B) in the present invention measured by GPC is preferably 4.0 or less. More preferably, it is 3.0 or less, and more preferably 2.5 or less.
- Preferable specific examples of the propylene-based copolymer (B) of the present invention include the following propylene 'ethylene' a-olefin copolymer (B-1).
- B-1 propylene 'ethylene' a-olefin copolymer
- the solar cell sealing property means that the cracking rate of the solar cell element (silicon cell) when filling the power generation module can be reduced due to good flexibility.
- Propylene 'ethylene' alpha-Orefuin copolymer (B-1) is 45 to 92 mol configuration units of propylene-derived 0/0, preferably from 56 to 90 mole 0/0, more preferably 61 to 86 mole 0/0, 5 to 25 mol of constituent units derived from E Ji Ren 0/0, preferably from 5 to 14 mole 0/0, more preferably 8-14 mol%, of 4-20 carbon atoms ⁇ - Orefuin 3 to 30 mole 0/0 a constitutional unit derived from, rather preferably 5 to 30 mol 0/0, more preferably comprises in an amount of 6-25 mol 0/0.
- ⁇ -olefin 1-butene is particularly preferable.
- Propylene 'ethylene' a-olefin copolymer (B- containing a structural unit derived from propylene, a structural unit derived from ethylene, and a structural unit derived from a-olefin having 4 to 20 carbon atoms in such an amount. 1) has good compatibility with the propylene polymer (A), and the resulting solar cell encapsulating sheet exhibits sufficient transparency, flexibility, heat resistance, and scratch resistance.
- thermoplastic resin composition of the present invention the following (A) and (B) have the following blending amounts.
- the total amount of (A) and (B) is 100 parts by weight.
- the sheet has good moldability and the resulting solar cell encapsulated sheet has good heat resistance, transparency, and flexibility, and is therefore suitable for the present invention. Is preferred.
- thermoplastic resin composition of the present invention is preferably one in which a coupling agent is blended in the above (A) and (B) as an adhesion promoter for glass, plastic and the like. It can be preferably used to obtain a solar cell encapsulating sheet for bonding together.
- the coupling agent (Y) used in the present invention is a layer containing the thermoplastic resin composition of the present invention and another layer containing a polar group-containing resin, or 50 wt% of an inorganic compound such as metal or glass.
- % Can be used without particular limitation as long as it can improve the adhesiveness with other layers contained in an amount of at least%, but silane, titanate and chromium coupling agents are preferably used, especially A silane coupling agent (silane coupling agent) is preferably used.
- silane coupling agent silane coupling agent
- Known silane coupling agents can be used and are not particularly limited.
- the blending amount of the silane coupling agent is as follows. Parts by weight, preferably 0.1 to 3 parts by weight.
- the coupling agent ( ⁇ ) was grafted to at least one of ( ⁇ ) or ( ⁇ ) constituting the thermoplastic resin composition by using an organic peroxyacid compound. It may exist in a state.
- the amount of the coupling agent used is preferably about 0.1 to 5 parts by weight with respect to 100 parts by weight of the total amount of (ii) propylene-based polymer and (ii) propylene-based copolymer. Even if this silane-grafted thermoplastic resin composition is used, the same or better adhesion to glass and plastic as the silane coupling agent blend can be obtained.
- an organic peroxide for example, 0.001 to 5 parts by weight, preferably 0.01 to 3 parts per 100 parts by weight of the total of (A) and (B). Used in parts by weight.
- organic peroxides can be used and are not particularly limited. Specific examples include dilauroyl peroxide, 1, 1, 3, 3-tetramethylbutyl peroxide 2 Ethylhexanoate, dibenzoyl peroxide, t-amyl peroxy 2-ethyl hexanoate, t-butyl peroxy 2-ethyl hexanoate, t-butyl peroxyisobutyrate, t-butyl peroxymaleic acid, 1 , 1-di (tamylamyloxy) 3, 3, 5 Trimethylcyclohexane, 1,1-di (t-amylveroxy) cyclohexane, tamylamylperoxynononanoate, tamylamylper Xy-normalate, 1,1-di (t-butylperoxy) -3,3,5 trimethylcyclohexane, 1,1-di (t-butylperoxy)
- auxiliaries can be used as necessary.
- auxiliaries include sulfur, p-quinone dioxime, p, p, monodibenzoylquinone dioxime, N-methyl N-4-di-trosoarine, nitrosobenzene, diphenyl-azine, Peroxy auxiliaries such as trimethylolpropane 1 N, N'-m-phenoldimaleimide; or dibutenebenzene, triarylcyanurate (TAC), triallyl isocyanurate (TAIC) are preferred.
- TAC triarylcyanurate
- TAIC triallyl isocyanurate
- polyfunctional 'metatalate monomers such as ethylene glycol dimetatalylate, diethylene glycol dimetatalylate, polyethylene glycol dimetatalylate, trimethylololepropan trimethacrylate, and arylenomethalate, vinyl butyrate, vinyl stearate.
- Polyfunctional bull monomers such as rate .
- triallyl cyanurate (TAC) and triallyl isocyanurate (TAIC) are preferred.
- the above-mentioned auxiliary agent has a weight ratio of auxiliary agent to organic peroxide [(auxiliary agent) Z (organic peroxide)] of 1Z30 to 20Z1, preferably 1Z20 ⁇ : It is desirable to use it in the amount of LOZ1.
- the first thermoplastic resin composition of the present invention may be cross-linked, but is preferably non-cross-linked.
- Cross-linked means that the MFR at 230 ° C. of the thermoplastic resin composition is not more than 0.04 gZlO.
- the first thermoplastic resin composition of the present invention preferably has an MFR at 230 ° C of 0.05 g / 10 min or more.
- the second thermoplastic resin composition of the present invention comprises 1 to 95% by weight of the propylene polymer ( ⁇ ) and 5 to 99% by weight of the propylene copolymer ( ⁇ ) (( ⁇ ) and ( ⁇ )) And 0.1-5 parts by weight of the coupling agent ( ⁇ ) with respect to 100 parts by weight of the total of ( ⁇ ) and ( ⁇ ) It is obtained by melt-kneading in the presence of a product.
- a product for example, two or more of (i), (ii) and (ii) may be prepared in advance, and the resulting composition may be used for melt kneading with an organic peroxide.
- the temperature of the melt kneading with the organic peroxide is not particularly limited, but is a temperature that is not less than the decomposition start temperature of the organic peroxide and that the thermoplastic resin composition is less susceptible to thermal degradation. For example, it is 140 ° C to 300 ° C.
- the components (A), (B), and (Y) may be further included as long as they do not detract from the object of the present invention.
- an additive described later may be included.
- the second thermoplastic resin composition of the present invention is cross-linked !, but it is preferably non-cross-linked.
- Cross-linked means that the MFR at 230 ° C of the thermoplastic resin composition is 0.04 g ZlO or less.
- the second thermoplastic resin composition of the present invention preferably has an MFR at 230 ° C of 0.05 g / 10 min or more.
- additives are mix
- additives include ultraviolet absorbers, light stabilizers and antioxidants for preventing deterioration due to ultraviolet rays in sunlight.
- the ultraviolet absorber examples include 2hydroxy-4-methoxybenzophenone, 2-2 dihydroxy-4-methoxybenzophenone, 2-hydroxy-4-methoxy-4, and one-ply noroxybenzophenone.
- Benzophenone series such as hydroxy-4 N-otatoxybenzophenone, 2- (2 hydroxy-1,3,5 di-tert-butylphenol) benzotriazole, 2- (2-hydroxy-1-5-methylphenol)
- Use may be made of benzotriazoles such as benzotriazole, salicylic acid esters such as phenylsaltylate and p-octylphenol-sulcylate.
- a hindered amine type is used.
- a hindered phenol type or a phosphite type is used.
- thermoplastic resin composition or the second thermoplastic resin composition of the present invention a 0.5 mm-thick press sheet (both sides of the press sheet are, for example, PET film (product of Toray Industries, Inc.)
- PET film product of Toray Industries, Inc.
- a film having a light transmittance (transformer) of 86% or more, preferably 88% or more, can be preferably used.
- the first thermoplastic resin composition or the second thermoplastic resin composition of the present invention has a Melt-Floret (ASTM D1238, 230.C, load 2.16 kg) force.
- 0.05 to lOOOgZlO preferably ⁇ 0.1 to 900 gZlO, and more preferably ⁇ 0.5 to 800 gZlO.
- the melt tension (MT) is usually 0.5 to: L0 g, preferably 1 to In this case, the moldability when molding the solar cell encapsulating sheet of the present invention is excellent.
- This melt tension (MT) is measured by a melt tension tester (manufactured by Toyo Seiki Seisakusho Co., Ltd.) at a constant speed (10 mZ) at a measuring temperature of 200 ° C and an extrusion speed of 15 mmZ. It was determined as the tension applied to the filament when it was pulled.
- the first thermoplastic resin composition or the second thermoplastic resin composition of the present invention can be blended with various other additives as long as the object of the present invention is not impaired. is there .
- additives include ultraviolet absorbers for preventing deterioration due to ultraviolet rays in sunlight, light stabilizers, antioxidants, heat stabilizers, antistatic agents, anti-slip agents, anti-blocking agents, and anti-fogging agents.
- the solar cell encapsulating sheet of the present invention is, for example, a sheet having the above-mentioned first thermoplastic resin composition or second thermoplastic resin composition, and the thickness is not particularly limited. It is preferably a sheet of lmm to 3mm. Within this thickness range, the glass and solar cell modules are less likely to be damaged in the lamination step, which is preferable in terms of light transmittance and photovoltaic power generation.
- the method for forming the solar cell encapsulating sheet of the present invention is not particularly limited, but known extrusion molding (cast molding, extrusion sheet molding, inflation molding, injection molding, etc.), compression molding, calendar molding, etc. Can be molded.
- the sheet can be embossed, and the surface of the sheet is decorated by embossing to prevent blocking between the sheets. Further, the embossing is used for glass and solar cell modules during lamination. It is preferable because it prevents the breakage by acting as a cushion against the lure.
- the solar cell encapsulating sheet of the present invention is laminated on one side and Z or both sides of the power generation module, and further, if necessary, a surface protective layer is laminated on the outer surface of these solar cell encapsulating sheets.
- a surface protective layer is laminated on the outer surface of these solar cell encapsulating sheets.
- the method for forming the solar cell is not particularly limited.
- the surface protective layer, the solar cell element, and the solar cell encapsulating sheet of the present invention are sequentially laminated, and these are heat-pressed by vacuum suction or the like. It can be obtained by a method.
- the surface protective layers used on the front and back surfaces of the solar cell encapsulating sheet of the present invention can also be protected without particular limitation, and the layer comprising the solar cell encapsulating sheet can be protected, and the purpose as a solar cell is impaired. Any known material can be used if not.
- surface protective layer Specific examples of such materials include glass, polyethylene resin, polypropylene resin, cyclic polyolefin resin, AS (acrylonitrile monostyrene) resin, ABS (Atari mouth-tolyl monobutadiene monostyrene) resin, Polyvinyl chloride resin, fluorinated resin, polyethylene terephthalate, polyester resin such as polyethylene naphthalate, phenol resin, polyacrylic resin, polyamide resin such as various nylons, polyimide resin, polyamide imide resin Polyurethane resin, cellulosic resin, silicone resin, polycarbonate resin, etc., and a plurality of these resins can be used.
- an inorganic Z organic composite film in which an inorganic oxide or the like is vapor-deposited can be preferably used.
- a known adhesive and adhesive resin layer may be provided. Is possible.
- one surface of the surface protective layer may have light shielding / light reflecting properties.
- Examples of the propylene-based copolymer (AA) used in the present invention include a propylene homopolymer or a copolymer of propylene and at least one a-olefin having 2 to 20 carbon atoms other than propylene.
- ⁇ -olefins having 2 to 20 carbon atoms other than propylene include ethylene, 1-butene, 1-pentene, 1-hexene, 4-methyl 1-pentene, 1-octene, 1-decene, 1 —Dodecene, 1-tetradecene, 1-hexadecene, 1-octadecene, 1-eicocene, etc.
- a copolymer of ethylene or ⁇ and a-olefin having 4 to 10 carbon atoms is preferable. Can be used.
- a- Orefuinka constituent units also derived is 35 mole 0/0 hereinafter in the polypropylene, preferably may contain a proportion of 20 mole 0/0 or less.
- X-olefin-derived structural units may be included in two or more types.
- ⁇ -olefins may form a random copolymer or a block copolymer with propylene, but in the present invention, they form a random copolymer. Rumo Can be preferably used.
- a random copolymer of propylene and ⁇ -olefin having 2 to 20 carbon atoms (excluding propylene) is preferred.
- the content is more preferably from 1 to 7.5 mol 0/0 it is more preferably a preferred instrument 2 to 7 mole 0/0 a tool from 2.5 to 6.5 mol% .
- the propylene polymer (AA) is 230 ° C in accordance with ASTM D1238, and the load is 2.1.
- Melt flow rate (MFR) measured at 6 kg is from 0.01 to: LOOOgZlO content, preferably
- the melting point of the propylene polymer (AA) of the present invention observed by a differential scanning calorimeter (DSC) is 80 ° C or higher and 140 ° C or lower. More preferably, the temperature is 110 to 140 ° C, more preferably 110 to 135 ° C.
- DSC differential scanning calorimeter
- the propylene polymer (AA) of the present invention has a molecular weight distribution of 3 or less, preferably 1 to 2.7, more preferably 1.8, which also provides gel permeation chromatography (GPC) force.
- GPC gel permeation chromatography
- propylene polymer (AA) of the present invention whose melting point and molecular weight distribution are in the above ranges, it becomes cloudy even when heated at a temperature near the melting point of (AA) (that is, around 150 ° C). It is possible to obtain a thermoplastic rosin composition free from rust. The cause of this is not clear, but in part, propylene-based polymers (AA) are formed from molecules with a uniform composition distribution, etc. It is predicted that the crystal domain size formed when molecules in the molten state are crystallized by heating (ie, around 150 ° C) will be uniform, and this may be related. It is estimated that
- the propylene-based polymer (AA) of the present invention may use either a isotactic structure or a syndiotactic structure as long as it is well compatible with the later-described propylene-based copolymer (BB). it can. Further, if necessary, a plurality of propylene polymers (AA) can be used in combination. For example, two or more kinds of components having different melting points and rigidity can be used.
- Such a propylene-based polymer (AA) is obtained, for example, by using a meta-oxycene compound as a catalyst component. It is obtained by polymerizing propylene or copolymerizing propylene and other a-olefins using the meta-cene catalyst system used.
- the metallocene catalyst to be used a known metallocene compound capable of polymerizing ⁇ -olefin, an organoaluminum oxide compound, and a metal or metallocene compound may be used.
- a meta-octacene catalyst comprising a compound capable of forming an ion pair in response, and preferably a meta-octacene catalyst capable of performing stereoregular polymerization such as a isotactic or syndiotactic structure.
- it can be produced using a catalyst described in International Publication No. 27124 Pamphlet or JP-A-2006-52313.
- Preferred examples of a-olefin used together with propylene during copolymerization include ethylene, 1-butene, 1-pentene, 1-hexene, 4-methyl 1-pentene and 1-octene. .
- the propylene-based copolymer (BB) in the present invention is a copolymer of propylene and ⁇ -olefin having up to 2 to 20 carbon atoms excluding at least one propylene, and has a shore hardness of 30 to 80, Preferably, the melting point is 35 to 70, and the melting point observed by the differential scanning calorimeter DSC is less than 80 ° C. or the melting point is not observed.
- the fact that the melting point is not observed means that in the range of 150 to 200 ° C., a crystal melting peak having a heat of crystal melting of UZg or more is not observed.
- the measurement conditions are as described in the examples.
- the a-olefin used as a comonomer is preferably ethylene and Z or ⁇ -olefin having 4 to 20 carbon atoms.
- Propylene-based copolymer of the present invention are propylene units 45-92 mole 0/0, rather preferably comprises 56 to 90 mole 0/0, as the content of a- Orefuin used as comonomers is 8 to 55 mole 0/0, preferably from 10 to 44 mole 0/0.
- the propylene-based copolymer (BB) of the present invention has a melt flow rate (MFR) measured at 230 ° C and a load of 2.16 kg according to ASTM D1238 of 0.01 to: LOOOgZlO content, Preferably it should be in the range of 0.05-50g / 10min! /.
- the method for producing the propylene-based copolymer (BB) in the present invention is not particularly limited, and stereoregularity is used so that the force olefin is formed into a isotactic or syndiotactic structure.
- Propylene in the presence of a known catalyst that can be polymerized, for example, a catalyst comprising a solid titanium component and an organometallic compound as main components, or a metalocene catalyst using a metalocene compound as a component of the catalyst.
- a catalyst that can be polymerized
- a catalyst comprising a solid titanium component and an organometallic compound as main components
- a metalocene catalyst using a metalocene compound as a component of the catalyst.
- other a-olefins can be copolymerized.
- the catalyst of International Publication 2004-087775 for example, the same The catalyst described in Examples le to 5e in the pamphlet of the issue can be used.
- the propylene-based copolymer (BB) of the present invention preferably has the following performance independently independently.
- the triad tacticity (mm fraction) measured by 13 C-NMR is preferably 85% or more, more preferably 85-97.5%, still more preferably 87-97%, particularly preferably 90- It is in the range of 97%.
- the mm fraction can be measured using the method described on page 21 line 7 to page 26 line 6 of the pamphlet of International Publication No. 2004-087775.
- the Shore A hardness of the propylene copolymer (BB) of the present invention is not particularly limited, but is usually in the range of 30 to 80, preferably 35 to 75.
- the propylene copolymer (BB) in the present invention was measured at 23 ° C at a span interval of 30 mm and a pulling speed of 30 mm Zmin using JIS K6301 in accordance with JIS K6301.
- Stress (M100) force at% strain Usually 4 MPa or less, preferably 3 MPa or less, more preferably 2 MPa or less.
- the propylene-based copolymer (BB) in the present invention has a crystallinity measured by X-ray diffraction of usually 20% or less, preferably 0 to 15%.
- the propylene-based copolymer (BB) in the present invention has a single glass transition temperature and has a glass transition temperature Tg force measured by a differential scanning calorimeter (DSC). Usually, ⁇ 10 ° C. or less, preferably It is desirable to be in the range of ⁇ 15 ° C or less.
- the glass transition temperature Tg of the propylene-based copolymer (BB) in the present invention is within the above range. If there is, it is excellent in cold resistance and low temperature characteristics.
- the propylene-based copolymer (BB) in the present invention usually has a heat of fusion ⁇ ⁇ ⁇ when a melting point (Tm, ° C) exists in an endothermic curve in a differential scanning calorimeter (DSC). Is less than 30 jZg, and the relationship between C3 content (mol%) and heat of fusion ⁇ H CiZg is as follows.
- the molecular weight distribution (Mw / Mn, in terms of polystyrene, Mw: weight average molecular weight, Mn: number average molecular weight) measured by GPC of the propylene copolymer (BB) in the present invention is 4.0 or less. More preferably, it is 3.0 or less, more preferably 2.5 or less.
- Preferable specific examples of the propylene-based copolymer (BB) of the present invention include the following propylene-ethylene 'a-olefin copolymer (BB-1).
- BB-1 propylene-ethylene 'a-olefin copolymer
- the solar cell sealing property means that the cracking rate of the solar cell element (silicon cell) when filling the power generation module can be reduced due to good flexibility.
- 1-butene is particularly preferable.
- Propylene 'ethylene' a-olefin copolymer containing a structural unit derived from propylene, a structural unit derived from ethylene, and a structural unit derived from a-olefin having 4 to 20 carbon atoms in this amount (BB- 1) has good compatibility with the propylene polymer (AA), and the resulting solar cell encapsulating sheet exhibits sufficient transparency, flexibility, heat resistance, and scratch resistance.
- thermoplastic resin composition of the present invention the following (AA) and (BB) are as follows.
- (AA) propylene-based polymer is 1 to 95 parts by weight, preferably 5 to 80 parts by weight, more preferably 10 to 50 parts by weight
- BB propylene copolymer 5 to 99 parts by weight of propylene copolymer, preferably 20 to 95 parts by weight, more preferably 50 to 90 parts by weight
- the total amount of (AA) and (BB) is 100 parts by weight.
- the sheet has good moldability and the resulting solar cell encapsulated sheet has good heat resistance, transparency, and flexibility, and is therefore suitable for the present invention. It is suitable.
- thermoplastic resin composition of the present invention is a mixture of the above (AA) and (BB) with a coupling agent as an adhesion promoter for glass, plastic, etc., and is laminated with glass or plastic. Therefore, it can be preferably used to obtain a solar cell encapsulating sheet.
- the coupling agent (Y) used in the present invention is a layer containing the thermoplastic resin composition of the present invention and another layer containing a polar group-containing resin, or an inorganic compound such as metal or glass by 50 wt. %
- a polar group-containing resin, or an inorganic compound such as metal or glass by 50 wt. %
- silane, titanate and chromium coupling agents are preferably used, especially
- a silane coupling agent silane coupling agent
- silane coupling agent silane coupling agent
- Known silane coupling agents can be used and are not particularly limited.
- the silane coupling agent As a compounding amount of the silane coupling agent, the total amount of the above (ii) propylene-based polymer and (ii) propylene-based copolymer of the present invention is 100 parts by weight, and the silane coupling agent is 0.1-5. Parts by weight, preferably 0.1 to 3 parts by weight.
- thermoplastic resin composition by using an organic peroxide as the coupling agent, it is possible to cause a graft reaction to at least one of ( ⁇ ) and ( ⁇ ) constituting the thermoplastic resin composition. It is.
- the amount of the coupling agent is preferably about 0.1 to 5 parts by weight with respect to 100 parts by weight of the total amount of (i) the propylene-based polymer and (ii) the propylene-based copolymer.
- This sila Even when a grafted thermoplastic resin composition is used, the same or better adhesion to glass and plastic as a silane coupling agent blend can be obtained.
- auxiliaries include sulfur, p-quinone dioxime, p, p, monodibenzoylquinone dioxime, N-methyl N-4-di-trosoarine, nitrosobenzene, diphenyl-azine, Peroxy auxiliaries such as trimethylolpropane 1 N, N'-m-phenoldimaleimide; or dibutenebenzene, triarylcyanurate (TAC), triallyl isocyanurate (TAIC) are preferred.
- TAC triarylcyanurate
- TAIC triallyl isocyanurate
- polyfunctional 'metatalate monomers such as ethylene glycol dimetatalylate, diethylene glycol dimetatalylate, polyethylene glycol dimetatalylate, trimethylololepropan trimethacrylate, and arylenomethalate, vinyl butyrate, vinyl stearate.
- polyfunctional butyl monomers such as rate.
- triallyl cyanurate (TAC) and triallyl isocyanurate (TAIC) are preferred.
- the above-mentioned auxiliary agent has a weight ratio of auxiliary agent to organic peroxide [(auxiliary agent) Z (organic peroxide compound)] of 1Z30 to 20Z1, preferably 1Z20. ⁇ : It is desirable to use it in the amount of LOZ1.
- thermoplastic resin composition of the present invention may be cross-linked, but is preferably non-cross-linked.
- Cross-linked means that the MFR at 230 ° C of the thermoplastic resin composition is 0.04 g / 10 min or less.
- organic peroxides can be used, and there are no particular restrictions, but specific examples include dilauroyl peroxide, 1, 1, 3, 3-tetramethylbutyl peroxide 2
- Khi dilauroyl peroxide
- dibenzoyl peroxide t-amyl peroxy 2-ethyl hexanoate
- t-butyl peroxy 2-ethyl hexanoate t-butyl peroxyisobutyrate
- t-butyl peroxymaleic acid 1, 1 Di (tamylamyloxy) 3, 3, 5 Trimethylcyclohexane, 1,1-Di (tamylamyloxy) cyclohexane, tertamylperoxynononanoate, tertamylperoxynormal Otatoate, 1,1-di (t-butylperoxy) -3,3,5 trimethylcyclohexane, 1,1-di (t-butylperoxy) cycl
- thermoplastic resin composition of the present invention various other additives are blended in the thermoplastic resin composition of the present invention.
- additives include ultraviolet absorbers, light stabilizers, antioxidants and the like for preventing deterioration due to ultraviolet rays in sunlight.
- UV absorber examples include 2hydroxy-4-methoxybenzophenone, 2-2 dihydroxy-4-methoxybenzophenone, 2hydroxy-4-methoxy-4, one-force noroxybenzophenone, 2 Benzophenone series such as hydroxy-4 N-otatoxybenzophenone, 2- (2 hydroxy-1,3,5 di-tert-butylphenol) benzotriazole, 2- (2-hydroxy-1-5-methylphenol)
- benzotriazoles such as benzotriazole
- salicylic acid esters such as phenylsaltylate and p-octylphenol-sulcylate.
- a hindered amine type is used.
- a hindered phenol type or a phosphite type is used.
- thermoplastic resin composition of the present invention a 0.5 mm-thick press sheet (both sides of the press sheet, for example, a PET film (trade name, Lumirror, manufactured by Toray) is used as a release film.
- the light transmittance (transformer) when produced and measured is preferably 86% or more, and preferably 88% or more.
- the third thermoplastic resin composition of the present invention has a melt flow rate (ASTM D123 8, 230.C, load 2.16 kg) force, usually 0.05 to: LOOOgZlO content, preferably 0 1 to 900 gZlO min, more preferably 0.5 to 800 gZlO min.
- the third thermoplastic resin composition of the present invention has a melt tension (MT) of Usually, 0.5 to: L0 g, preferably 1 to: LOg.
- MT melt tension
- This melt tension (MT) is measured by a melt tension tester (manufactured by Toyo Seiki Seisakusho Co., Ltd.) at a constant speed (10 mZ) for strands extruded at a measurement temperature of 200 ° C and an extrusion speed of 15 mmZ It was determined as the tension applied to the filament during pulling.
- the third thermoplastic rosin composition of the present invention can be blended with various other additives within a range that does not impair the object of the present invention.
- additives include, for example, UV absorbers, light stabilizers, antioxidants, heat stabilizers, antistatic agents, anti-slip agents, anti-blocking agents, anti-blocking agents to prevent deterioration due to ultraviolet rays in sunlight.
- clouding agents include transparent nucleating agents, lubricants (silicon oil, etc.), pigments, dyes, plasticizers, anti-aging agents, and hydrochloric acid absorbents.
- the solar cell encapsulating sheet of the present invention is a sheet having a thickness of 0.1 mm to 3 mm made of the third thermoplastic resin composition, for example. If it is less than this thickness, the glass and the solar cell module are likely to be damaged in the laminating step, which is not preferable. On the other hand, if it is more than this thickness, the light transmittance decreases and the amount of photovoltaic power generation decreases, which is not preferable.
- the method for forming the solar cell encapsulating sheet of the present invention is not particularly limited, but known extrusion molding (cast molding, extrusion sheet molding, inflation molding, injection molding, etc.), compression molding, calendar molding, etc. Can be molded.
- the sheet can be embossed, and the embossing can be used to decorate the surface of the sheet to prevent the sheet from being blocked. It is preferred because it becomes a cushion against and prevents these breakage.
- the solar cell encapsulating sheet of the present invention is laminated on one side and Z or both sides of the power generation module, and further, if necessary, a surface protective layer is laminated on the outer surface of these solar cell encapsulating sheets.
- a surface protective layer is laminated on the outer surface of these solar cell encapsulating sheets.
- the method for forming the solar cell is not particularly limited.
- the surface protective layer, the solar cell element, and the solar cell encapsulating sheet of the present invention are sequentially laminated, and these are vacuum-sucked or the like. It can obtain by the method of carrying out thermocompression bonding.
- the surface protective layers used on the front and back surfaces of the solar cell encapsulating sheet of the present invention are also not particularly limited, and it is possible to protect the layer composed of the solar cell and the solar cell encapsulating sheet, and the purpose of the solar cell is impaired Any known material can be used if it is not.
- Specific examples of materials for the surface protective layer include glass, polyethylene resin, polypropylene resin, cyclic polyolefin resin, AS (acrylonitrile monostyrene) resin, ABS (Atari mouth-tril monobutadiene monostyrene).
- Resin Polychlorinated Bule Resin, Fluorine Resin, Polyethylene Terephthalate, Polyethylene Naphthalate and Other Polyester Resin, Phenolic Resin, Polyacrylic Resin, Polyamide Resin such as Nylon, Polyimide Resin, Polyamide imide resin, polyurethane resin, cellulosic resin, silicone resin, polycarbonate resin, and the like, and a plurality of these resins can be used.
- an inorganic Z organic composite film in which an inorganic oxide or the like is vapor-deposited can be preferably used.
- a known adhesive and adhesive resin layer may be provided. Is possible.
- one surface of the surface protective layer may have light shielding / light reflecting properties.
- press sheet (blank) and press sheet sample (reheated) prepared by the method described in the examples were checked for the presence or absence of cloudiness.
- the heat test sample prepared by the method described in the example is held in a 90 ° C oven at 60 ° with respect to the horizon for 1000 hours, and the heat test sample is checked for the presence or absence of flow of the pseudo module. evaluated.
- a propylene polymer (prime polymer brand name: F327) having an MFR (230 ° C) of 7 gZlO, a melting point of 140 ° C, a Vicat softening temperature of 123 ° C, and a tensile strength of 1080 MPa was used.
- a propylene-based polymer (prime polymer brand name: F337D) having an MFR (230 ° C) of 7 gZlO, a melting point of 132 ° C, a Vicat softening temperature of 115 ° C, and a tensile modulus of 910 MPa was used.
- the propylene 'ethylene' 1-butene copolymer used in the present invention was obtained by the following method.
- VMMS 3-Methacryloxypropyltrimethoxysilane
- TAIC Triallyl isocyanurate
- the DSC exotherm / endotherm curve was determined, and the temperature at the maximum melting peak position during temperature rise was defined as Tm.
- the sample is packed in an aluminum pan, (i) heated to 200 ° C in 100 ° CZ minutes and held at 200 ° C for 5 minutes, then (ii) cooled to 150 ° C in 20 ° CZ minutes Then, (iii) The temperature is raised to 200 ° C in 20 ° CZ minutes. This is the endothermic peak temperature force melting point Tm observed in (iii).
- a dry alumina packed in the same aluminum pan as the above 1 1) was prepared as a reference, measured in this state under the conditions described in the above 1-1), and in the endothermic curve obtained in (iii), the vertical axis Take a reading of (calorie) as follows.
- D Value on the vertical axis at the peak position of the melting point (maximum melting point)
- the density was measured according to the method described in ASTM 1505.
- a dumbbell conforming to JIS K7113-2 was used, and measurement was performed at 23 ° C with a chuck distance of 80 mm and a pulling speed of 200 mm Zmin. At this time, a sample made of SUS with a thickness of 4 mm was placed up and down, heated at 190 ° C, Z-pressurized, rapidly cooled with a cooling chiller at 20 ° C, and then molded. It is a press sheet that has passed for more than an hour.
- JIS K6301 a JIS No. 3 dumbbell was used, and the span interval was 30 mm, and the tensile speed was 200 mm Zmin at 23 ° C.
- the sample made of SUS with a thickness of 4mm was placed up and down, heated at 190 ° C, Z-pressurized, and rapidly cooled with a cooling chiller at 20 ° C to form. This is a pressed sheet.
- O-Dichlorobenzene (Wako Pure Chemical Industries) and BHT (Takeda Pharmaceutical) 0.025% by weight as an acid-deterrent agent were used for the phase, and the sample concentration was 15 mg / ml.
- the sample injection volume was 500 microliters, and a differential refractometer was used as the detector.
- Standard polystyrene has a molecular weight with a Mw ⁇ 1000, and Mw> 4 one company manufactured Tosoh for X 1 0 6, for 1000 ⁇ Mw ⁇ 4 X 10 6 were used Puretsushi yer Chemical Corporation.
- thermoplastic resin composition having the blending ratio shown in Table 2 was simultaneously added to Laboplast Mill (Toyo Seiki) and kneaded (190 ° C, 3 minutes, 40 rpm) to obtain a thermoplastic resin composition. . Cover this thermoplastic resin composition with a press molding machine (190 ° C, heat 7 minutes, cool, use Teflon (registered trademark) sheet (300 ⁇ m) as the release film) 0.5 mm A press sheet (blank) was created.
- a press molding machine 190 ° C, heat 7 minutes, cool, use Teflon (registered trademark) sheet (300 ⁇ m) as the release film
- this press sheet (blank) was again heated by a press molding machine at 150 ° C and 160 ° C for 10 minutes, and heat was applied (when the press sheet was first molded at 190 ° C, Similarly, a Teflon (registered trademark) sheet was used as a release film) to obtain a 0.5 mm press sheet sample (re-calo heat).
- Table 2 shows the results of evaluating the MFR, light transmittance, and the presence or absence of cloudiness.
- thermoplastic resin composition shown in Table 2 was simultaneously added to Laboplast Mill (Toyo Seiki) and kneaded (110 ° C, 3 minutes, 40 rpm) to obtain a thermoplastic resin composition.
- This thermoplastic resin composition was processed with a press molding machine (120 ° C) to produce a 0.5 mm press sheet (blank). [0177] Further, this press sheet was further heated at 150 ° C and 160 ° C for 20 minutes using a similar press molding machine to obtain a 0.5 mm press sheet sample (reheated).
- Table 2 shows the results of evaluating the MFR, light transmittance, and the presence or absence of cloudiness.
- thermoplastic resin composition of the present invention did not cause white turbidity even when heated at a low temperature, and a transparent sheet was obtained. Moreover, the fluidity of the resin was not lost.
- a 0.5 mm press sheet (190 ° C molding) prepared by the method described in Example 1 and encapsulating a 300 ⁇ m aluminum plate to be used as a pseudo module, and 3 m mt glass from above Plate, 50 m PET (white) film superimposed and heat laminated (150 ° C, 10 min, 1 atm) for heat resistance test sample (Fig. 6), 3mmt glass plate and 0.5mm press One sheet was heated and laminated (150 ° C, 10 minutes, 1 atm) to prepare a sample for glass adhesion test ( Figure 7).
- Table 3 shows the evaluation results.
- a 300 ⁇ m aluminum plate to be used as a pseudo module was enclosed, and 3 m above this
- a mt glass plate and a 50 ⁇ m PET (white) film are overlaid and heated and laminated (150 ° C, 10 minutes, 1 atm) to produce a sample for heat resistance test (Fig. 6).
- a sample for glass adhesion test (Fig. 7) was prepared by laminating one sheet of 5mm press sheet (150 ° C, 10 minutes, 1 atm).
- Table 3 shows the evaluation results.
- thermoplastic resin composition of the present invention has heat resistance sufficient for practical use without crosslinking that loses the fluidity of the resin. It was confirmed that the thermoplastic resin composition of the present invention can exhibit practically sufficient glass adhesive strength.
- the propylene polymer ( ⁇ -5) was used as the propylene polymer ( ⁇ ).
- a propylene-based polymer (6-6) was used.
- thermoplastic resin composition [0189] Raw materials having the blending ratios shown in Table 4 were simultaneously put into a lab plast mill (manufactured by Toyo Seiki) and kneaded (190 ° C, 3 minutes, 40 rpm) to obtain a thermoplastic resin composition. .
- This thermoplastic resin composition is heated with a press molding machine (190 ° C, heated for 7 minutes and then cooled, using a Toray Lumirror (100 ⁇ m) as a release film) and a 0.5 mm press sheet ( Blank)
- This press sheet was further heated at 150 ° C and 160 ° C for 10 minutes using the same press molding machine (inside the mold used when the press sheet was first molded at 190 ° C). A 0.5 mm sample was obtained. Table 4 shows the results of evaluating the MFR, light transmittance, and the presence or absence of cloudiness.
- thermoplastic resin composition The raw materials listed in Table 4 were added at the same time as Laboplast Mill (manufactured by Toyo Seiki) and kneaded (110 ° C, 3 minutes, 40 rpm) to obtain a thermoplastic resin composition.
- This thermoplastic resin composition was covered with a press molding machine (140 ° C.) to prepare a 0.5 mm press sheet (blank).
- this press sheet was further heated at 150 ° C and 160 ° C for 20 minutes using a similar press molding machine to obtain a 0.5 mm sheet sample.
- Table 4 shows the results of evaluating the MFR, light transmittance, and the presence or absence of cloudiness.
- thermoplastic resin composition of the present invention white turbidity did not occur even when heated at a low temperature, and a transparent sheet was obtained.
- test sample (Fig. 7) was prepared.
- thermoplastic resin composition of the present invention From the results in Table 5, it was confirmed that practically sufficient heat resistance and glass adhesive strength can be exhibited by using the thermoplastic resin composition of the present invention.
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Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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ES07741470T ES2433519T3 (es) | 2006-04-13 | 2007-04-12 | Composición de resina termoplástica, lámina de sellado de célula solar y célula solar |
EP07741470.4A EP2009052B1 (en) | 2006-04-13 | 2007-04-12 | Thermoplastic resin composition, sheet for sealing solar cell, and solar cell |
JP2008510976A JP5344909B2 (ja) | 2006-04-13 | 2007-04-12 | 熱可塑性樹脂組成物、太陽電池封止用シートおよび太陽電池 |
CN2007800132511A CN101421346B (zh) | 2006-04-13 | 2007-04-12 | 热塑性树脂组合物、太阳能电池密封用片材及太阳能电池 |
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JP2006-111069 | 2006-04-13 | ||
JP2006111069 | 2006-04-13 |
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PCT/JP2007/058034 WO2007119767A1 (ja) | 2006-04-13 | 2007-04-12 | 熱可塑性樹脂組成物、太陽電池封止用シートおよび太陽電池 |
Country Status (8)
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US (3) | US8067499B2 (ja) |
EP (1) | EP2009052B1 (ja) |
JP (1) | JP5344909B2 (ja) |
KR (1) | KR101004191B1 (ja) |
CN (1) | CN101421346B (ja) |
ES (1) | ES2433519T3 (ja) |
TW (1) | TW200745244A (ja) |
WO (1) | WO2007119767A1 (ja) |
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JP2012190942A (ja) * | 2011-03-09 | 2012-10-04 | Inoac Gijutsu Kenkyusho:Kk | 太陽電池素子封止用材及びその製造方法 |
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Also Published As
Publication number | Publication date |
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JPWO2007119767A1 (ja) | 2009-08-27 |
CN101421346A (zh) | 2009-04-29 |
EP2009052A1 (en) | 2008-12-31 |
KR101004191B1 (ko) | 2010-12-24 |
US8067502B2 (en) | 2011-11-29 |
TW200745244A (en) | 2007-12-16 |
EP2009052B1 (en) | 2013-08-14 |
ES2433519T3 (es) | 2013-12-11 |
JP5344909B2 (ja) | 2013-11-20 |
US20120053298A1 (en) | 2012-03-01 |
CN101421346B (zh) | 2011-05-11 |
US20080108757A1 (en) | 2008-05-08 |
US20110092649A1 (en) | 2011-04-21 |
EP2009052A4 (en) | 2010-12-15 |
KR20090006197A (ko) | 2009-01-14 |
US8324321B2 (en) | 2012-12-04 |
US8067499B2 (en) | 2011-11-29 |
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