WO2014061318A1 - Composition de gel de silicone pour sceller de manière étanche une cellule solaire, et module de cellule solaire - Google Patents

Composition de gel de silicone pour sceller de manière étanche une cellule solaire, et module de cellule solaire Download PDF

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WO2014061318A1
WO2014061318A1 PCT/JP2013/068499 JP2013068499W WO2014061318A1 WO 2014061318 A1 WO2014061318 A1 WO 2014061318A1 JP 2013068499 W JP2013068499 W JP 2013068499W WO 2014061318 A1 WO2014061318 A1 WO 2014061318A1
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silicone gel
gel composition
group
sealing
solar cell
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PCT/JP2013/068499
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Japanese (ja)
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池野　正行
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信越化学工業株式会社
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Priority to JP2014541971A priority Critical patent/JP5817937B2/ja
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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
    • C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
    • C08L83/14—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers in which at least two but not all the silicon atoms are connected by linkages other than oxygen atoms
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
    • C08L83/04—Polysiloxanes
    • 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
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
    • C08G77/04—Polysiloxanes
    • C08G77/12—Polysiloxanes containing silicon bound to hydrogen
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
    • C08G77/04—Polysiloxanes
    • C08G77/20—Polysiloxanes containing silicon bound to unsaturated aliphatic groups
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy

Definitions

  • the present invention relates to a solar cell sealing silicone gel composition and a solar cell module that are cured to give excellent heat discoloration.
  • the silicone gel composition contains an organohydrogenpolysiloxane having a hydrogen atom (ie, SiH group) bonded to a silicon atom, an organopolysiloxane having an alkenyl group such as a vinyl group bonded to a silicon atom, and a platinum-based catalyst.
  • An addition reaction curable organopolysiloxane composition that gives a gel-like cured product with a low crosslinking density by addition reaction of hydrogen atoms bonded to silicon atoms to alkenyl groups (for example, JP-A-48-17847). (Patent Document 1), JP-A-56-143241 (Patent Document 2), and JP-A-2-269771 (Patent Document 3)).
  • the silicone gel cured product cured by heating this silicone gel composition is excellent in heat resistance, weather resistance, cold resistance, electrical insulation, transparency, etc., and has low elastic modulus and low stress. It is used to protect parts and consumer electronic parts.
  • EVA ethylene vinyl acetate
  • EVA ethylene vinyl acetate
  • EVA generates carboxylic acid due to ultraviolet ray degradation or hydrolysis, causing deterioration of wiring and causing a decrease in output.
  • a silicone sealing material having excellent weather resistance has attracted attention.
  • a cured silicone gel having a low elastic modulus has attracted attention.
  • the cured silicone gel is also yellowed over time, the light transmittance is lowered, and the light conversion efficiency is lowered.
  • Several compositions have already been proposed for the yellowing problem of the cured silicone gel (for example, Japanese Patent Publication No. 2-48177 (Patent Document 4) and Japanese Patent Publication No. 2-48180 (Patent Document 5). No. 3-19269 (Patent Document 6)).
  • the heat discoloration resistance which is difficult to discolor in the practical high temperature region of the solar cell module, is not yet sufficient, and further improvement is required.
  • the present invention has been made in view of the above circumstances, and is produced by using a silicone gel composition for sealing solar battery cells, which is a silicone gel cured product that has an excellent heat discoloration resistance and light transmissivity, and the composition, which has not been conventionally used.
  • An object of the present invention is to provide a solar cell module.
  • the present invention provides the following silicone gel composition for sealing solar battery cells and a solar battery module.
  • A The following average composition formula (I) (R 1 ) a (R 2 ) b SiO (4-ab) / 4 (I) (Wherein R 1 represents an alkenyl group having 2 to 8 carbon atoms, R 2 represents a monovalent hydrocarbon group having 1 to 10 carbon atoms which does not contain an aliphatic unsaturated bond, and a and b are 0 ⁇ a ⁇ 3, 0 ⁇ b ⁇ 3, and 0 ⁇ a + b ⁇ 4.) An organopolysiloxane having at least one alkenyl group bonded to a silicon atom in one molecule;
  • B The following average composition formula (II) (R 2 ) c H d SiO (4-cd) / 4 (II) (Wherein R 2 is as described above, and c and d are numbers such that 0 ⁇ c ⁇ 3,
  • c and d are 0.6 ⁇ c ⁇ 2.1, 0.001 ⁇ d ⁇ 1.0, and 0.8 ⁇ c + d ⁇ 3.0. 4]
  • the silicone gel composition for sealing solar battery cells according to any one of the above.
  • [6] The solar cell sealing according to any one of [1] to [5], wherein the cured product of the silicone gel composition has a penetration of 20 to 200 with a 1/4 cone defined by JIS K2220. Silicone gel composition.
  • the present invention it is possible to provide a cured silicone gel that is more excellent in heat discoloration and light transmission than in the past, and it can be expected that the solar cell module is highly efficient and long-term reliability is improved.
  • the silicone gel composition for sealing solar battery cells according to the present invention, (A) The following average composition formula (I) (R 1 ) a (R 2 ) b SiO (4-ab) / 4 (I) (Wherein R 1 represents an alkenyl group having 2 to 8 carbon atoms, R 2 represents a monovalent hydrocarbon group having 1 to 10 carbon atoms which does not contain an aliphatic unsaturated bond, and a and b are 0 ⁇ a ⁇ 3, 0 ⁇ b ⁇ 3, and 0 ⁇ a + b ⁇ 4.) An organopolysiloxane having at least one alkenyl group bonded to a silicon atom in one molecule; (B) The following average composition formula (II) (R 2 ) c H d SiO (4-cd) / 4 (II) (Wherein R 2 is as described above, and c and d are numbers such that 0 ⁇ c ⁇ 3, 0 ⁇ d
  • Component (A) is the main component (base polymer) of this composition, and is an organopolysiloxane having at least one alkenyl group bonded to a silicon atom in one molecule represented by the above average composition formula (I). is there.
  • R 1 is independently usually an alkenyl group having 2 to 8, preferably 2 to 6, more preferably 2 to 3 carbon atoms.
  • alkenyl group having 2 to 8, preferably 2 to 6, more preferably 2 to 3 carbon atoms include a vinyl group, an allyl group, a propenyl group, an isopropenyl group, a 1-butenyl group, an isobutenyl group, a 1-hexenyl group, and the like.
  • Preferred are a vinyl group and an allyl group, and a vinyl group is particularly preferable. This is particularly advantageous in terms of structure and economy.
  • R 2 is independently a monovalent hydrocarbon group containing no aliphatic unsaturated bond, and the number of carbon atoms is usually 1 to 10, preferably 1 to 6. Specific examples thereof include a linear or branched alkyl group such as a methyl group, an ethyl group, a propyl group, an isopropyl group, a butyl group and an octyl group; a cycloalkyl group such as a cyclopentyl group and a cyclobutyl group; a phenyl group and a naphthyl group Aryl groups such as a group, tolyl group and xylyl group; aralkyl groups such as benzyl group, phenethyl group and phenylpropyl group.
  • a linear or branched alkyl group such as a methyl group, an ethyl group, a propyl group, an isopropyl group, a butyl group and an
  • the organopolysiloxane as component (A) may be linear or branched, or a mixture thereof. Moreover, since this composition is used for casting, potting, coating, impregnation, adhesion, etc., it needs appropriate fluidity before curing and appropriate gel characteristics after curing, and the viscosity of component (A) is 50. It is preferable to set it to ⁇ 100,000 mPa ⁇ s. Therefore, a and b are 0 ⁇ a ⁇ 3, 0 ⁇ b ⁇ 3, and 0 ⁇ a + b ⁇ 4.
  • Those satisfying ⁇ b ⁇ 2.1 and 1.8 ⁇ a + b ⁇ 2.2 are preferable.
  • the viscosity is a value measured using a rotational viscometer at 25 ° C. (hereinafter the same).
  • the organopolysiloxane of component (A) reacts with the organohydrogenpolysiloxane of component (B) described later to form a crosslink, so that an alkenyl group of R 1 (an alkenyl group bonded to a silicon atom) is formed. It is necessary to have at least one in one molecule, and it is preferable to have two or more.
  • Organopolysiloxanes are generally diorganocyclopolysiloxanes such as hexamethylcyclotrisiloxane, octamethylcyclotetrasiloxane, tetravinyltetramethylcyclotetrasiloxane, and the like, R 3 SiO 0.5 units (R is a monovalent hydrocarbon).
  • a strongly basic catalyst such as an alkali metal hydroxide such as lithium, sodium, potassium, cesium or the silanolate thereof, tetramethylammonium hydroxide, tetramethylphosphonium hydroxide, tetrabutylphosphonium hydroxide, or the like.
  • the diorganopolysiloxane used in the present invention is used.
  • a strongly acidic catalyst such as silanolate, sulfuric acid, trifluoromethanesulfonic acid, etc.
  • the diorganopolysiloxane used in the present invention is used.
  • loxane it is necessary to equilibrate with an alkali metal hydroxide, tetramethylammonium hydroxide or a silanolate thereof as a catalyst from the viewpoint of polymer end-blocking rate, electrical property retention stability, and heat discoloration.
  • the chlorine content (combustible chloro content) determined by neutralization titration by the oxygen flask combustion method from the aspect of heat discoloration of the silicone gel composition of the present invention is the total amount of components (A) to (C). On the other hand, it must be 2 ppm or less, and preferably 2 ppm or less in the component (A).
  • ethylene chlorohydrin which is generally used as a neutralizing agent.
  • the chlorine content determined by neutralization titration by the oxygen flask combustion method is determined by a quantification method based on JIS K7229 (1995). Hydrogen chloride generated by burning a sample in an oxygen stream is converted into silver ions. The chlorine content is determined by titration with
  • organopolysiloxane of the component (A) examples include, for example, a trimethylsiloxy group-capped dimethylsiloxane / methylvinylsiloxane copolymer, a molecular chain both-ends trimethylsiloxy group-capped methylvinylpolysiloxane, and both molecular chains.
  • the organohydrogenpolysiloxane of component (B) used in the present invention is a crosslinking agent represented by the above average composition formula (II) and reacts with the alkenyl group bonded to the silicon atom of component (A). It is important in forming crosslinks and converting the composition into an elastic body. Therefore, (B) organohydrogenpolysiloxane needs to have at least two hydrogen atoms (SiH groups) directly bonded to silicon atoms in one molecule.
  • the organohydrogenpolysiloxane has preferably 2 to 30, more preferably 2 to 10, particularly preferably 2 to 5 silicon-bonded hydrogen atoms in one molecule.
  • the organohydrogenpolysiloxane of component (B) may be linear or branched, or a mixture thereof.
  • the viscosity of the component (B) is preferably 1,000 mPa ⁇ s or less from the viewpoint of economy during production.
  • c and d are 0 ⁇ c ⁇ 3, 0 ⁇ d ⁇ 2, and 0 ⁇ c + d ⁇ 4.
  • the number of silicon atoms in one molecule of the organohydrogenpolysiloxane of this component is usually 20 to 1,000, but the handling workability of the composition and the properties of the gel cured product obtained are as follows. From the viewpoint of good (low elastic modulus, low stress), it is preferably 40 to 1,000, more preferably 40 to 400, still more preferably 60 to 300, particularly preferably 100 to 300, most preferably. Is 160-300.
  • This organohydrogenpolysiloxane also preferably has a chlorine content of 2 ppm or less.
  • a polymerization equilibration method using a strongly acidic catalyst such as sulfuric acid or trifluoromethanesulfonic acid is employed. obtain.
  • Component (B) is blended in an amount of 0.8 to 3.0 moles of hydrogen atoms bonded to silicon atoms in component (B) with respect to 1 mole of alkenyl groups bonded to silicon atoms in component (A).
  • the amount is preferably within the range of 0.8 to 2.5 mol, more preferably 0.8 to 2.0 mol.
  • the heat discoloration is inferior.
  • the amount of hydrogen atoms exceeds 3.0 mol, the resulting cured product may be extremely inferior in heat resistance.
  • organohydrogenpolysiloxane of component (B) examples include 1,1,3,3-tetramethyldisiloxane, 1,3,5,7-tetramethylcyclotetrasiloxane, and tris (hydrogendimethylsiloxy).
  • the platinum-based catalyst as component (C) is for accelerating the addition reaction between the silicon atom-bonded alkenyl group of component (A) and the silicon atom-bonded hydrogen atom of component (B).
  • Examples include platinum acid alcohol complexes, vinylsiloxane complexes, alkyne complexes, eneyne compound complexes, diketone complexes, cyclopentadiene complexes, phosphorus compound complexes, nitrogen compound complexes, and the like.
  • a platinum complex having a molar ratio of chlorine to platinum atoms in the component (C) of 1 or less is preferable.
  • the blending amount of the component (C) is 0.1 to 10 ppm, preferably 1 to 5 ppm in terms of the mass of platinum atoms with respect to the total amount of the components (A) and (B). If it is less than 0.1 ppm, the curability may not be stable. There is a relationship between the amount of platinum-based catalyst and heat discoloration, and if it exceeds 10 ppm, it is not preferable from the viewpoint of heat discoloration.
  • the curable silicone gel composition of the present invention can be prepared by mixing the compositions of the components (A) to (C) according to a conventional method. At that time, the components to be mixed may be divided into two or more parts as needed, and mixed, for example, (A) part of component and (C) component part, It is also possible to divide and mix the remaining part of component A) and the part composed of component (B).
  • the silicone gel composition of the present invention may contain an effective amount of an addition reaction control agent such as 1-ethynylcyclohexanol or tetramethyltetravinylcyclotetrasiloxane if necessary.
  • an addition reaction control agent such as 1-ethynylcyclohexanol or tetramethyltetravinylcyclotetrasiloxane if necessary.
  • ingredients that can be blended include flame retardants.
  • flame retardants for example, an effective amount of benzotriazole, benzimidazole, phenoxazine, indoline, imidazole, benzoxazole, or the like may be blended.
  • the chlorine content obtained by neutralization titration by an oxygen flask combustion method needs to be 2 ppm or less with respect to the total amount of the components (A) to (C), and particularly preferably 1 ppm or less.
  • a method for obtaining a composition in which the total amount of chlorine in the components (A) to (C) is 2 ppm or less it is important to take a measure in which chlorine does not remain in the production process of each component.
  • a cured silicone gel having heat-resistant transparency (heat-resistant discoloration and light transmission) suitable for solar cell sealing can be obtained.
  • a solar battery cell is sealed using the silicone gel composition obtained as described above, and the solar battery module of the present invention as shown in FIG. 1 is obtained.
  • this solar cell module is manufactured by the following procedure.
  • the present invention is not limited to this manufacturing method and may be a casting method.
  • the silicone gel composition of the present invention is applied to one side of each of the two panels 1a and 1b which are panels of transparent members. At this time, an uncoated portion of the silicone gel composition is formed in a frame shape on the outer peripheral portion of the panel coating surface (silicone gel cured film forming surface) of the panels 1a and 1b.
  • a coating method there are a spray coating method, a curtain coating method, a knife coating method, a screen coating method and the like, and any of these methods may be used.
  • a curing process is performed between room temperature (20 ° C.) and 150 ° C. for 5 minutes to 3 hours by a conventional method to form silicone gel cured films 2a and 2b on panels 1a and 1b.
  • the film thickness of the silicone gel cured films 2a and 2b at this time is set to 200 to 1,000 ⁇ m.
  • the penetration of the silicone gel cured films 2a and 2b by 1/4 cone defined by JIS K2220 is in the range of 20 to 200, particularly 20 to 100.
  • the penetration is less than 20, the characteristics of the cured silicone gel such as low modulus and low hardness cannot be exhibited, and the solar battery in the process of manufacturing the solar battery cell 4 made of a semiconductor substrate between the panels 1a and 1b.
  • the difference in coefficient of linear expansion and modulus with the wiring connection part on the surface of the solar cell 4 cannot be absorbed, and the solar cell 4 becomes brittle. May be incurred.
  • the penetration exceeds 200, the form as a cured silicone gel cannot be maintained and flows.
  • a photoactive platinum-based catalyst it may be cured by ultraviolet irradiation (wavelength 200 to 500 nm).
  • a seal member 3 of a butyl rubber thermoplastic sealing material is provided on the outer peripheral portion of the one panel 1a where the silicone gel cured film 2a is not formed, and the silicone gel cured film 2a is formed.
  • the solar battery cell 4 is arrange
  • Solar cell 4 is a solar cell string in which solar cells are electrically connected in series.
  • the silicone gel cured film 2b of the panel 1b is formed with the silicone gel cured film 2b forming surface of the other panel 1b facing the solar cell 4 arranged on the silicone gel cured film 2a of the panel 1a.
  • the other panel 1b is arranged so that the solar cell 4 is sandwiched between the silicone gel cured films 2a and 2b at the position where the seal member 3 is in contact with the outer peripheral portion that has not been, and two sheets are used by using a vacuum laminator.
  • the panels 1a and 1b are pressed while being heated under vacuum to perform a vacuum laminating process for sealing the solar battery cells 4. (Procedure 5)
  • the frame member 5 is attached to the outer peripheral ends (frame end portions) of the sealed panels 1a and 1b to complete the solar cell module.
  • combustible chloro content is chlorine content calculated
  • composition A prepared.
  • the combustible chloro content in the composition A was 1 ppm or less.
  • the obtained composition A was heat-cured at 100 ° C. for 1 hour, and the penetration (JIS K2220, 1/4 cone) and light transmittance (wavelength 400 nm) of the cured product were measured. Further, the penetration and light transmittance after heating the cured product at 150 ° C./100 hours were measured. The results are shown in Table 1.
  • Example 2 (A-1) 60 parts by mass of dimethylpolysiloxane having a viscosity of 1,000 mPa ⁇ s (end of combustible chloro content of 1 ppm or less) blocked with a dimethylvinylsiloxy group at the molecular chain end, (a-2) both molecular chains An average of 0.58 of the two monofunctional siloxy units at the end is blocked with dimethylvinylsiloxy groups, and the average of the remaining 1.42 is blocked with trimethylsiloxy groups, and has a viscosity of 800 mPa ⁇ s.
  • composition B The combustible chloro content in composition B was 1 ppm.
  • the obtained composition B was heat-cured at 100 ° C. for 1 hour, and the penetration of the cured product (JIS K2220, 1/4 cone) and light transmittance (wavelength 400 nm) were measured. Further, the penetration and light transmittance after heating the cured product at 150 ° C./100 hours were measured. The results are shown in Table 1.
  • Composition C was prepared according to Example 1. The combustible chloro content in Composition C was 3 ppm.
  • composition C was heat-cured at 100 ° C. for 1 hour, and the penetration of the cured product (JIS K2220, 1/4 cone) and light transmittance (wavelength 400 nm) were measured. Further, the penetration and light transmittance after heating the cured product at 150 ° C./100 hours were measured. The results are shown in Table 1.
  • Example 2 In Example 1, instead of 100 parts by mass of (a) dimethylpolysiloxane having a molecular chain end blocked with a dimethylvinylsiloxy group and a viscosity of 1,000 mPa ⁇ s (combustible chloro content of 1 ppm or less), combustibility A composition D was prepared according to Example 1 except that 100 parts by mass of dimethylpolysiloxane having a viscosity of 1,000 mPa ⁇ s and having a chloro content of 50 ppm blocked at the molecular chain end with a dimethylvinylsiloxy group was used. The combustible chloro content in Composition D was 47 ppm.
  • composition D was heat-cured at 100 ° C. for 1 hour, and the penetration of the cured product (JIS K2220, 1/4 cone) and light transmittance (wavelength 400 nm) were measured. Furthermore, the penetration and light transmittance after heating this cured product at 150 ° C./100 hours were measured. The results are shown in Table 1.

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Abstract

L'invention concerne une composition de gel de silicone pour sceller de manière étanche une cellule solaire, la composition de gel de silicone comprenant un gel durci, ayant une excellente résistance à l'altération de couleur et une excellente transparence optique, et contenant (A) 100 parties en masse d'un organopolysiloxane ayant au moins un groupe alcényle lié à un atome de silicium dans la molécule et représenté par la formule de composition moyenne (I): (R1)a(R2)bSiO(4-a-b)/4 (où R1 représente un groupe alcényle en C2-8, R2 représente un groupe hydrocarboné monovalent en C1-10 ne contenant pas de liaisons insaturées aliphatiques, et a et b sont 0 < a < 3 et 0 < b < 3, et sont des nombres tels que 0 < a + b < 4), (B) un organohydrogénopolysiloxane ayant au moins deux groupes SiH par molécule et utilisé dans une quantité à laquelle la teneur en groupes SiH est 0,8-3 moles par mole des groupes alcényle liés à un atome de silicium dans le composant (A), et (C) un catalyseur de platine dans une quantité catalytique, la teneur en chlore déterminée par titrage par neutralisation selon la méthode de combustion de ballon d'oxygène étant 2 ppm ou moins par rapport à la quantité totale des composants (A)-(C).
PCT/JP2013/068499 2012-10-19 2013-07-05 Composition de gel de silicone pour sceller de manière étanche une cellule solaire, et module de cellule solaire WO2014061318A1 (fr)

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WO2024057924A1 (fr) * 2022-09-12 2024-03-21 ダウ・東レ株式会社 Composition de silicone durcissable, produit durci à partir de celle-ci, corps stratifié et dispositif optique ou affichage optique

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