CN109485965A - A kind of solar cell backboard substrate and preparation method and solar cell backboard - Google Patents

A kind of solar cell backboard substrate and preparation method and solar cell backboard Download PDF

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Publication number
CN109485965A
CN109485965A CN201811241650.XA CN201811241650A CN109485965A CN 109485965 A CN109485965 A CN 109485965A CN 201811241650 A CN201811241650 A CN 201811241650A CN 109485965 A CN109485965 A CN 109485965A
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solar cell
polyethylene
cell backboard
ethylene
parts
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Inventor
赵正柏
夏修旸
陈洪野
宇野敬
宇野敬一
吴小平
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Suzhou Competition Application Technology Ltd By Share Ltd
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Suzhou Competition Application Technology Ltd By Share Ltd
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/06—Polyethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/08—Copolymers of ethene
    • C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
    • C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
    • 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
    • C08L45/00—Compositions of homopolymers or copolymers of compounds having no unsaturated aliphatic radicals in side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic or in a heterocyclic ring system; Compositions of derivatives of such polymers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02—Non-macromolecular additives
    • C09J11/04—Non-macromolecular additives inorganic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/08—Macromolecular additives
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
    • C09J123/02—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
    • C09J123/04—Homopolymers or copolymers of ethene
    • C09J123/06—Polyethene
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    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/22—Plastics; Metallised plastics
    • C09J7/24—Plastics; Metallised plastics based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • C09J7/241—Polyolefin, e.g.rubber
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    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/22—Plastics; Metallised plastics
    • C09J7/24—Plastics; Metallised plastics based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • C09J7/241—Polyolefin, e.g.rubber
    • C09J7/243—Ethylene or propylene polymers
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    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
    • 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
    • H01L31/049—Protective back sheets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2237—Oxides; Hydroxides of metals of titanium
    • C08K2003/2241—Titanium dioxide
    • 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
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • 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
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2207/00—Properties characterising the ingredient of the composition
    • C08L2207/06—Properties of polyethylene
    • C08L2207/066—LDPE (radical process)
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
    • C09J2203/33—Applications of adhesives in processes or use of adhesives in the form of films or foils for batteries or fuel cells
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
    • C09J2301/12—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers
    • C09J2301/122—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers the adhesive layer being present only on one side of the carrier, e.g. single-sided adhesive tape
    • 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

Abstract

The present invention provides a kind of solar cell backboard substrates and preparation method and solar cell backboard.A kind of solar cell backboard substrate of the invention, include core layer, by weight, the core layer includes following components: 60~85 parts of polyolefin, 1~30 part of heat-resisting reinforced resin, 1~5 part of toughener, 1~5 part of compatilizer, 0~20 part of inorganic filler and 0~3 part of auxiliary agent.Preparation method of the invention is simple, and solar cell backboard substrate obtained has good water vapor rejection ability, and is provided simultaneously with good thermal stability and mechanical performance, can be widely used for the processing of solar cell back plate；Solar cell backboard of the invention, molding is simple, can be recycled, and water vapor barrier property is good, excellent with the cementability of packaging adhesive film, cell piece can be prevented to be oxidized, improve the generating efficiency of cell piece, extend the service life of solar cell module.

Description

A kind of solar cell backboard substrate and preparation method and solar cell backboard
Technical field
The invention belongs to solar energy backplane technology field, it is related to a kind of solar cell backboard substrate and preparation method and too Positive energy battery back-sheet.
Background technique
In field of solar thermal power generation, the backboard of solar components is located at the outermost layer of module backside, plays guarantor to cell piece Shield and supporting role.Backboard should have reliable electric insulating quality, water vapor barrier property and good resistance to ag(e)ing.To make solar energy Battery keeps optimal working condition and maintains 25 years service life, and backboard should have excellent water vapor barrier property and hydrolysis Performance, this is one of the important indicator for measuring backboard performance quality.If solar energy backboard water vapor barrier property is bad, steam passes through back Plate penetrates into the cementability that will affect packaging adhesive film inside encapsulation system, causes backboard and packaging adhesive film delamination, makes cell piece It is oxidized to seriously reduce the service life of cell piece generating efficiency and component, anti-hydrolytic performance is also what water vapor rejection deteriorated One of the major reasons.
Existing backboard on the market can be divided into the compound backboard using PET as core material, and with polyolefin for main material The co-extrusion type integration backboard of material.PET have intensity height, good weatherability, thermal stability by force etc. major advantages, but simultaneously there is also The disadvantage of water vapor transmittance height, hydrolysis wet-hot aging performance difference；Co-extrusion type backboard has molding simple, and water vapor transmittance is low, can The advantages that recycling, but there is also intensity simultaneously it is low, thermal stability is poor the disadvantages of.How the advantages of the two, is combined, into one Step overcomes the shortcomings that the two to will be the Main way that the following backboard develops.
CN104403282A discloses a kind of solar cell backboard modified PET substrate and preparation method thereof the modification PET base material includes the component of following parts by weight meter: 30~80 parts of n-butyl acetate, PET40~80 part, hexabromocyclododecane 40~ 100 parts, 30~150 parts of 3-M2BOL, 100~200 parts of methyl ethyl ketone, 40~80 parts of titanium dioxide, maleic anhydride 20~50 parts of graft polypropylene, 40~120 parts of stabilizer, 20~120 parts of carbonate, 30~40 parts of phthalate.System Preparation Method: by n-butyl acetate, PET, hexabromocyclododecane, 3-M2BOL, titanium dioxide, phthalic acid ester Class is uniformly mixed, and is heated to 800~950 DEG C, is slowly added to residual components, and inert gas is filled with, and reacts 2~3h；It is dry to squeeze out, Cooling slab；Drawing and setting.The n-butyl acetate of the invention significantly improves the linking power between PET macromolecular, makes substrate Surface can increase with tensile strength, and mechanical performance is stronger.But the steam of solar cell backboard made from the invention Obstructing capacity needs to be further increased.
CN103618015A discloses a kind of novel solar battery backboard and preparation method thereof, solar cell backboard by Hydrophobic polymer layer, biaxially oriented polyester film substrate, adhesive phase, Polyofefine adhesive layer pass through coating complex technique preparation It forms.The invention uses hydrophobic polymer layer, has ultra-hydrophobicity, can avoid droplet in the adherency of back plate surface, improves The anti-hydrolytic performance of backboard can effectively guarantee the long-term work of solar components.Although its hydrophobic performance is improved, It is that water vapor rejection ability, thermal stability and mechanical performance need to be further increased.
Therefore it provides a kind of solar energy for the water vapor transmittance and good thermal stability and mechanical performance having had simultaneously Battery back-sheet material is necessary.
Summary of the invention
In view of the deficiencies of the prior art, the purpose of the present invention is to provide a kind of solar cell backboard substrates and preparation side Method and solar cell backboard, the solar cell backboard substrate have good water vapor rejection ability, and are provided simultaneously with good Thermal stability and mechanical performance.
To achieve this purpose, the present invention adopts the following technical scheme:
One of the objects of the present invention is to provide a kind of solar cell backboard substrate, the solar cell backboard substrate Comprising core layer, by weight, the core layer includes following components:
Due to the design feature and crystallinity in process of polyolefin itself, film prepared therefrom obstructs steam Ability is strong, and still, only the mechanical performance of the film itself of polyolefin preparation is bad, and especially break-draw rate is insufficient, and pure Polyolefin film be easy be heat-shrinked under the high temperature conditions.The present invention selects main material of the polyolefin as backboard substrate Material, the block-water performance that heat-resisting reinforced resin is added to enhance heat resistance, while keeping polyolefin outstanding, by by polyolefin, Heat-resisting reinforced resin and toughener carry out tertiary blending, and the backboard substrate being prepared is under the ability for having water vapor rejection, also With heat resistanceheat resistant shrinkage and good mechanical strength.
Wherein, by weight, the core layer includes following components:
60~85 parts of polyolefin, such as the parts by weight of polyolefin are 60 parts, 61 parts, 62 parts, 63 parts, 64 parts, 65 parts, 66 Part, 67 parts, 68 parts, 69 parts, 70 parts, 71 parts, 72 parts, 73 parts, 74 parts, 75 parts, 76 parts, 77 parts, 78 parts, 79 parts, 80 parts, 81 Part, 82 parts, 83 parts, 84 parts, 85 parts.
1~30 part of heat-resisting reinforced resin, such as the parts by weight of heat-resisting reinforced resin are 1 part, 2 parts, 3 parts, 4 parts, 5 parts, 6 Part, 7 parts, 8 parts, 9 parts, 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, 15 parts, 16 parts, 17 parts, 18 parts, 19 parts, 20 parts, 21 parts, 22 Part, 23 parts, 24 parts, 25 parts, 26 parts, 27 parts, 28 parts, 29 parts, 30 parts.
1~5 part of toughener, such as the parts by weight of toughener are 1 part, 2 parts, 3 parts, 4 parts, 5 parts.
1~5 part of compatilizer, such as the parts by weight of compatilizer are 1 part, 2 parts, 3 parts, 4 parts, 5 parts.
0~20 part of inorganic filler, such as the parts by weight of inorganic filler are 1 part, 2 parts, 3 parts, 4 parts, 5 parts, 6 parts, 7 parts, 8 Part, 9 parts, 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, 15 parts, 16 parts, 17 parts, 18 parts, 19 parts, 20 parts.
0~3 part of auxiliary agent, such as the parts by weight of auxiliary agent are 1 part, 1.5 parts, 2 parts, 2.5 parts, 3 parts.
0~30 part of fire retardant, such as the parts by weight of fire retardant are 0,1 part, 2 parts, 3 parts, 4 parts, 5 parts, 6 parts, 7 parts, 8 parts, 9 Part, 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, 15 parts, 16 parts, 17 parts, 18 parts, 19 parts, 20 parts, 21 parts, 22 parts, 23 parts, 24 Part, 25 parts, 26 parts, 27 parts, 28 parts, 29 parts, 30 parts.
Wherein, the polyolefin is one of polyethylene, polypropylene, ethylene-propylene copolymer and cycloolefin or at least Two kinds of mixture.
In the present invention, the heat-resisting reinforced resin is polyester, polyketone, polyamide, cycloolefin, plastic polyurethane elastomer (TPU), polyester and one of polyether block copolymer (TPEE) and mineral or at least two mixture.
Preferably, the polyester is polyethylene terephthalate, Isosorbide-5-Nitrae cyclohexanedimethanol polyester, poly- terephthaldehyde One of sour butanediol ester, poly- 2,6- (ethylene naphthalate) and polypropylene terephthalate or at least two it is mixed Close object.
Preferably, the polyamide is one kind or at least two in nylon 6, nylon 12, nylon 612, nylon 1212 and MXD6 The mixture of kind.
Preferably, the mineral are the mixing of one of talcum powder, carbon black, mica powder and barium sulfate or at least two Object.
Wherein, the toughener be polyolefin elastomer (POE), ethylene propylene diene rubber (EPDM), ethylene vinyl acetate it is total Polymers (EVA), ethylene-methyl acrylate copolymer (EMA), vinyl-acrylate copolymer (EAA), butadiene-styrene rubber (SBR), Polystyrene-Polyethylene-polybutene-polystyrene (SEBS), polystyrene-poly butylene-polystyrene (SBS), ACR In (general name of acrylic acid esters co-polymer) elastomer, methyl methacrylate, butadiene and styrene copolymer (MBS) One kind or at least two mixture.
In the present invention, the compatilizer is that polyethylene-g- maleic anhydride, polypropylene-g- maleic anhydride, ethylene-propylene are total Polymers-g- maleic anhydride, polyethylene-g- glycidyl methacrylate, polypropylene-g- glycidyl methacrylate, Ethylene-propylene copolymer-g- glycidyl methacrylate, polyolefin elastomer-g- maleic anhydride, bibasic ethylene propylene rubber- G- maleic anhydride, ethylene propylene diene rubber-g- maleic anhydride, ethylene-ethyl acetate copolymer-g- maleic anhydride, ethylene-methyl-prop Olefin(e) acid ester copolymer-g- maleic anhydride, butadiene-styrene rubber-g- maleic anhydride, gathers vinyl-acrylate copolymer-g- maleic anhydride Styrene-polyethylene-polybutene-polystyrene-g- maleic anhydride, polystyrene-poly butylene-polystyrene-g- maleic anhydride, Polyolefin elastomer-g- glycidyl methacrylate, bibasic ethylene propylene rubber-g- glycidyl methacrylate, ternary EP rubbers-g- glycidyl methacrylate, ethylene-ethyl acetate copolymer-g- glycidyl methacrylate, second Alkene-methacrylate copolymer-g- glycidyl methacrylate, vinyl-acrylate copolymer-g- methacrylic acid Ethylene oxidic ester, butadiene-styrene rubber-g- glycidyl methacrylate, Polystyrene-Polyethylene-polybutene-polystyrene-g- One of glycidyl methacrylate and polystyrene-poly butylene-polystyrene-g- glycidyl methacrylate Or at least two mixture.
In the present invention, the inorganic filler is one in talcum powder, titanium dioxide, montmorillonite, whisker, mica powder and calcium carbonate Kind or at least two mixture.
Preferably, the auxiliary agent is antioxidant and/or hydrolysis agent.
Preferably, the fire retardant is to have one of halogen fire retardant, halogen-free flame retardants or inorganic matter.
Preferably, the fire retardant is one of aluminium hydroxide, magnesium hydroxide or bromobenzene.
In the present invention, the solar cell backboard substrate is made of core layer and adhesive layer；Adhesive layer enhances The bonding force of core layer and package material.
Preferably, by weight, the adhesive layer includes following components:
Preferably, the inorganic filler is titanium dioxide or carbon black.
Preferably, the polyolefin blend is polyolefin and polyamide, ultra-high molecular weight polyethylene, cycloolefin, nylon Or ASA (Acrylonitrile Styrene acrylate copolymer, engineering plastics are acrylate rubber like body with The graft copolymer of acrylonitrile, styrene) at least one of mixture.Such as the polyolefin blend be polyolefin with The mixture of the mixture of the mixture of polyamide, polyolefin and ultra-high molecular weight polyethylene, polyolefin and cycloolefin, polyolefin With the mixture of nylon, the mixture of polyolefin and ASA, the mixture of polyolefin and polyamide, ultra-high molecular weight polyethylene gathers The mixture of the mixture of alkene and polyamide, cycloolefin, polyolefin and polyamide, nylon, polyolefin and polyamide, ASA The mixture of the mixture of mixture, polyolefin and ultra-high molecular weight polyethylene, cycloolefin, polyolefin and superhigh molecular weight polyethylene The mixture of alkene, nylon, the mixture of polyolefin and ultra-high molecular weight polyethylene, ASA, polyolefin and cycloolefin, nylon it is mixed Close object, the mixture of polyolefin and cycloolefin, ASA, the mixture of polyolefin and nylon, ASA, polyolefin and polyamide, superelevation The mixture of molecular weight polyethylene, cycloolefin, polyolefin and polyamide, ultra-high molecular weight polyethylene, nylon mixture, polyene Hydrocarbon and polyamide, ultra-high molecular weight polyethylene, ASA mixture, polyolefin and polyamide, cycloolefin, nylon mixture, gather Alkene and polyamide, cycloolefin, ASA mixture, polyolefin and ultra-high molecular weight polyethylene, cycloolefin, nylon, ASA it is mixed Close object, polyolefin and polyamide, ultra-high molecular weight polyethylene, cycloolefin, nylon, ASA mixture.
Preferably, the polyolefin is one of polyethylene, polypropylene, ethylene-propylene copolymer and cycloolefin or extremely Few two kinds of mixture.Such as the polyolefin is polyethylene, polyacrylic mixture, polyethylene, ethylene-propylene copolymer Mixture, the mixture of polyethylene, cycloolefin, the mixture of polypropylene, ethylene-propylene copolymer, polypropylene, cycloolefin it is mixed Close object, the mixture of ethylene-propylene copolymer and cycloolefin, polyethylene, polypropylene, ethylene-propylene copolymer mixture, gather Ethylene, polypropylene, cycloolefin mixture, the mixture of polyethylene, ethylene-propylene copolymer and cycloolefin, polypropylene, second The mixture of alkene-propylene copolymer and cycloolefin, polyethylene, polypropylene, ethylene-propylene copolymer and cycloolefin mixture.
Preferably, the polyolefin blend is the copolymer of polyethylene and polyamide, the polyethylene and the polyamides The mass ratio of amine is (1:10)~(10:1), such as the mass ratio of the polyethylene and the polyamide is 1:1,1:2,1:3,1: 4、1:5、1:6、1:7、1:8、1:9、1:10、2:1、2:3、2:5、2:7、2:9、3:1、3:2、3:4、3:5、3:7、3:8、3:10、 4:1、4:3、4:5、4:7、4:9、5:1、5:2、5:3、5:4、5:6、5:7、5:8、5:9、6:1、6:5、6:7、7:1、7:2、7:3、 7:4、7:5、7:6、7:8、7:9、7:10、8:1、8:3、8:5、8:7、8:9、9:1、9:2、9:4、9:5、9:7、9:8、9:10、10: 1、10:3、10:7、10:9。
Preferably, the ultra-high molecular weight polyethylene is the polyethylene that molecular weight is 1,000,000 or more.
Preferably, the polyethylene is one of low density polyethylene (LDPE), high density polyethylene (HDPE), linear low density polyethylene Or at least two mixture, polyethylene improves the cohesive force of substrate and glue film.
Preferably, the auxiliary agent is the mixture of antioxidant and resistance to ultraviolet auxiliary agent.
Preferably, the mass ratio of the antioxidant and the resistance to ultraviolet auxiliary agent is (1:3)~(3:1), such as the antioxygen The mass ratio of agent and the resistance to ultraviolet auxiliary agent is 1:1,1:2,1:3,2:1,2:3,3:1,3:2.
The second object of the present invention is to provide a kind of preparation side of solar cell backboard substrate described in the first purpose Method, the preparation method is that, by weight, by 60~85 parts of polyolefin, 1~30 part of heat-resisting reinforced resin, 1~5 part Toughener, 1~5 part of compatilizer, 0~20 part of inorganic filler, 0~3 part of auxiliary agent and 0~30 part fire retardant be blended and squeeze It forms a film out, the solar cell backboard substrate with core layer is prepared.
The solar cell backboard substrate further includes adhesive layer, and the core layer and the adhesive layer pass through extrusion Film forming.
Wherein, the mode of the film extrusion is one of biaxial tension, simple tension, the tape casting or rolling process.
The third object of the present invention is to provide a kind of solar cell backboard, and the solar cell backboard includes successively Resistance to ultraviolet layer, glue layer, core layer, adhesive layer and/or the easy adhesive coating being arranged.
Wherein, one of for the purpose of the adhesive layer described in adhesive layer, pass through film extrusion；Easy adhesive coating is Coated on core layer or coated in adhesive layer by way of coating.
Wherein, the resistance to ultraviolet layer is resistance to ultraviolet fluorine film (for example, PVDF thin film) or resistance to ultraviolet PET (poly terephthalic acid Glycol ester, for example, the D269 type PET of Sichuan Dong Cai Science and Technology Ltd.) layer.
Preferably, the easy adhesive coating is fluorine-containing coat or acrylic acid coatings.
Compared with prior art, the invention has the benefit that
(1) solar cell backboard substrate of the invention has good water vapor rejection ability, and is provided simultaneously with good Thermal stability and mechanical performance, water vapor transmittance are 0.1~2.1g/m2Day, longitudinal percent thermal shrinkage are 0.02~0.04%, Lateral percent thermal shrinkage is 0.01~0.03%, and longitudinal tensile strength is 28~35MPa, and transverse tensile strength is 20~30MPa, is indulged It is 150~250% to break-draw rate, transverse breakage extensibility is 80~190%.
(2) solar cell backboard of the invention, molding is simple, can be recycled, and water vapor barrier property is good, viscous with packaging adhesive film Connecing property is excellent, cell piece can be prevented to be oxidized, and improves the generating efficiency of cell piece, extends the use of solar cell module Service life.
(3) preparation method of solar cell backboard substrate of the invention is simple, can be widely used for solar cell back The processing of plate.
Detailed description of the invention
Fig. 1 is first preferred embodiment that solar cell backboard of the invention forms；
Fig. 2 is second preferred embodiment that solar cell backboard of the invention forms；
Fig. 3 is the third preferred embodiment that solar cell backboard of the invention forms；
Appended drawing reference is as follows:
The resistance to ultraviolet layer of 1-；2- glue layer；3- core layer；The easy adhesive coating of 4-；5- adhesive layer.
Specific embodiment
1-3 with reference to the accompanying drawing, and pass through specific embodiment to further illustrate the technical scheme of the present invention.
Solar cell backboard substrate of the invention, the solar cell backboard substrate include core layer, by weight Meter, the core layer include following components:
Solar cell backboard of the invention, the solar cell backboard include resistance to ultraviolet layer, the glue set gradually Layer, core layer, adhesive layer and/or easy adhesive coating.Preferably, the solar cell backboard is from air side to electricity Pond piece surveys respectively resistance to ultraviolet layer 1, glue layer 2, core layer 3, easy adhesive coating 4, as shown in Figure 1；The solar battery back Plate surveys respectively resistance to ultraviolet layer 1, glue layer 2, core layer 3, adhesive layer 5 from air side to cell piece, as shown in Figure 2；It is described Solar cell backboard surveyed from air side to cell piece respectively resistance to ultraviolet layer 1, glue layer 2, core layer 3, adhesive layer 5, easily Adhesive coating 4, as shown in Figure 3.
Embodiment 1
By polyethylene 600g, polyethylene terephthalate 300g, ethylene-ethyl acetate copolymer-g- maleic anhydride 100g is mixed, then is used as core layer to prepare solar cell backboard substrate by biaxial tension film forming.
Embodiment 2
By polypropylene 500g, polybutylene terephthalate (PBT) 300g, polyolefin elastomer 50g, polypropylene-g- maleic acid Acid anhydride 100g, talcum powder 250g, is mixed, then as core layer prepares solar cell backboard substrate by casting film-forming.
Embodiment 3
By ethylene-propylene copolymer 850g, poly- 2,6-naphthalenedicarboxylic acid glycol ester 100g, ethylene propylene diene rubber 40g, second Alkene-methacrylate copolymer-g- glycidyl methacrylate 10g is mixed, then is formed a film and made by simple tension Solar cell backboard substrate is prepared for core layer.
Embodiment 4
By cycloolefin 800g, Isosorbide-5-Nitrae cyclohexanedimethanol polyester 150g, Polystyrene-Polyethylene-polybutene-polystyrene 20g, vinyl-acrylate copolymer-g- maleic anhydride 30g are mixed, then are used as core layer system by biaxial tension film forming Standby solar cell backboard substrate.
Embodiment 5
By polypropylene 700g, poly- 2,6-naphthalenedicarboxylic acid glycol ester 200g, vinyl-acrylate copolymer 30g, polyphenyl second Alkene-polybutene-polystyrene-g- glycidyl methacrylate 70g has halogen fire retardant 0.3g to be mixed, then passes through stream Prolong film forming as core layer and prepares solar cell backboard substrate.
Embodiment 6
By polypropylene 700g, polyethylene terephthalate 200g, vinyl-acrylate copolymer 30g, polyphenyl second Alkene-polybutene-polystyrene-g- glycidyl methacrylate 70g, halogen-free flame retardants 0.1g is mixed, as core material Layer；Again by low density polyethylene (LDPE) 60g, polypropylene 10g, polyethylene-polyamide copolymer 1 5g, titanium dioxide 5g, antioxidant 0.2g, resistance to ultraviolet auxiliary agent 0.5g are mixed, as adhesive layer, two layers by be cast co-extrusion form a film to obtain solar battery back Plate substrate.
Embodiment 7
By polypropylene 700g, TPEE 200g, vinyl-acrylate copolymer 30g, polystyrene-poly butylene-polyphenyl second Alkene-g- glycidyl methacrylate 70g is mixed, as core layer；Again by low density polyethylene (LDPE) 60g, polypropylene 10g, polyethylene-polyamide copolymer 1 5g, titanium dioxide 5g, antioxidant 0.2g, resistance to ultraviolet auxiliary agent 0.5g are mixed, as Adhesive layer, two layers by be cast co-extrusion form a film to obtain solar cell backboard substrate.
Comparative example 1
Polyethylene 1000g is prepared into solar cell backboard substrate as core layer by casting film-forming.
Comparative example 2
Polyethylene terephthalate 1000g is prepared into solar battery back as core layer by biaxial tension film forming Plate substrate.
Comparative example 3
By polypropylene 860g, polyethylene terephthalate 40g, vinyl-acrylate copolymer 30g, polystyrene- Polybutene-polystyrene-g- glycidyl methacrylate 70g is mixed, as core layer；Again by low density polyethylene (LDPE) 60g, polypropylene 10g, polyethylene-polyamide copolymer 1 5g, titanium dioxide 5g, antioxidant 0.2g, resistance to ultraviolet auxiliary agent 0.5g are carried out Mixing, as adhesive layer, two layers by curtain coating co-extrusion form a film to obtain solar cell backboard substrate.
Comparative example 4
By polypropylene 600g, polyethylene terephthalate 350g, vinyl-acrylate copolymer 10g, polyphenyl second Alkene-polybutene-polystyrene-g- glycidyl methacrylate 40g is mixed, as core layer；Low-density is gathered again Ethylene 60g, polypropylene 10g, polyethylene-polyamide copolymer 1 5g, titanium dioxide 5g, antioxidant 0.2g, resistance to ultraviolet auxiliary agent 0.5g Mixed, as adhesive layer, two layers by be cast co-extrusion form a film to obtain solar cell backboard substrate.
Comparative example 5
By polypropylene 600g, polyethylene terephthalate 250g, vinyl-acrylate copolymer 100g, polyphenyl second Alkene-polybutene-polystyrene-g- glycidyl methacrylate 50g is mixed, as core layer；Low-density is gathered again Ethylene 60g, polypropylene 10g, polyethylene-polyamide copolymer 1 5g, titanium dioxide 5g, antioxidant 0.2g, resistance to ultraviolet auxiliary agent 0.5g Mixed, as adhesive layer, two layers by be cast co-extrusion form a film to obtain solar cell backboard substrate.
Comparative example 6
By polyamide 700g, polyethylene terephthalate 200g, vinyl-acrylate copolymer 30g, polyphenyl second Alkene-polybutene-polystyrene-g- glycidyl methacrylate 70g is mixed, as core layer；Low-density is gathered again Ethylene 60g, polypropylene 10g, polyethylene-polyamide copolymer 1 5g, titanium dioxide 5g, antioxidant 0.2g, resistance to ultraviolet auxiliary agent 0.5g Mixed, as adhesive layer, two layers by be cast co-extrusion form a film to obtain solar cell backboard substrate.
This comparative example compared with Example 6, the difference is that, polyolefin replaces with polyamide, it is other with implementation Example 6 is identical.
Comparative example 7
By polypropylene 700g, polyethylene glycol 200 g, vinyl-acrylate copolymer 30g, polystyrene-poly butylene-polyphenyl Ethylene-g- glycidyl methacrylate 70g is mixed, as core layer；Again by low density polyethylene (LDPE) 60g, polypropylene 10g, polyethylene-polyamide copolymer 1 5g, titanium dioxide 5g, antioxidant 0.2g, resistance to ultraviolet auxiliary agent 0.5g are mixed, as Adhesive layer, two layers by be cast co-extrusion form a film to obtain solar cell backboard substrate.
This comparative example compared with Example 6, the difference is that, heat-resisting reinforced resin replaces with polyethylene glycol, other It is same as Example 6.
Comparative example 8
By polypropylene 700g, polyethylene terephthalate 200g, polyethers 30g, polystyrene-poly butylene-polyphenyl second Alkene-g- glycidyl methacrylate 70g is mixed, as core layer；Again by low density polyethylene (LDPE) 60g, polypropylene 10g, polyethylene-polyamide copolymer 1 5g, titanium dioxide 5g, antioxidant 0.2g, resistance to ultraviolet auxiliary agent 0.5g are mixed, as Adhesive layer layer, two layers by be cast co-extrusion form a film to obtain solar cell backboard substrate.
This comparative example compared with Example 6, the difference is that, toughener replaces with polyethers, it is other with embodiment 6 It is identical.
Embodiment 1-7 and solar cell backboard substrate made from comparative example 1-8 are tested for the property, test result is such as Shown in table 1.Wherein, the ability of thin-film barrier steam is determined by steam penetrating capacity experiment.Wherein, steam penetrating capacity It is lower, illustrate that water vapor rejection ability is stronger；Steam penetrating capacity is higher, illustrates that water vapor rejection ability is weaker.It is saturating to test vapor Instrument used in excess is U.S. MOCON moisture-inhibiting instrument.The mechanical performance of film is by the direction MD and TD tensile strength and breaks Extensibility is split to be measured.Wherein, tensile strength and break-draw rate are bigger, illustrate that the mechanical performance of film is better.Test Instrument used in mechanical performance is electronic universal tester AGS-X Shimadzu.The stability of film passes through test MD and the side TD To percent thermal shrinkage measured.Wherein, shrinking percentage is smaller, illustrates that thermal stability is better.Test is heat-shrinked used instrument Device is Nikon Quadratic Finite Element.
Table 1
As can be seen from Table 1, the present invention has by adjusting raw material and proportion, solar cell backboard substrate obtained Good water vapor rejection ability, and it is provided simultaneously with good thermal stability and mechanical performance, water vapor transmittance is 0.1~2.1g/ M2day, longitudinal percent thermal shrinkage are 0.02~0.04%, and lateral percent thermal shrinkage is 0.01~0.03%, and longitudinal tensile strength is 28~35MPa, transverse tensile strength are 20~30MPa, and longitudinal fracture extensibility is 150~250%, and transverse breakage extensibility is 80~190%, there is good flame retardant property,.Solar cell backboard of the invention, molding is simple, can be recycled, water vapor rejection Property is good, excellent with the cementability of packaging adhesive film, and cell piece can be prevented to be oxidized, improve the generating efficiency of cell piece, extended The service life of component.
Above embodiments are only used to illustrate method detailed of the invention, and the invention is not limited to above-mentioned method detaileds, i.e., Do not mean that the invention must rely on the above detailed methods to implement.It should be clear to those skilled in the art, right Any improvement of the invention, the addition of equivalence replacement and auxiliary element to each raw material of product of the present invention, the selection of concrete mode Deng all of which fall within the scope of protection and disclosure of the present invention.

Claims (10)

1. a kind of solar cell backboard substrate, which is characterized in that the solar cell backboard substrate includes core layer, by weight Part meter is measured, the core layer includes following components:
2. solar cell backboard substrate according to claim 1, which is characterized in that the polyolefin is polyethylene, gathers One of propylene, ethylene-propylene copolymer and cycloolefin or at least two mixture.
3. solar cell backboard substrate according to claim 1 or 2, which is characterized in that the heat-resisting reinforced resin is Polyester, polyketone, polyamide, cycloolefin, plastic polyurethane elastomer, polyester and one of polyether block copolymer and mineral or At least two mixture；
Preferably, the polyester is polyethylene terephthalate, Isosorbide-5-Nitrae cyclohexanedimethanol polyester, poly terephthalic acid fourth One of diol ester, poly- 2,6- (ethylene naphthalate) and polypropylene terephthalate or at least two mixing Object；
Preferably, the polyamide is one kind or at least two in nylon 6, nylon 12, nylon 612, nylon 1212 and MXD6 Mixture；
Preferably, the mineral are the mixture of one of talcum powder, carbon black, mica powder and barium sulfate or at least two.
4. solar cell backboard substrate described in one of -3 according to claim 1, which is characterized in that the toughener is polyene Olefin elastomer, ethylene propylene diene rubber, ethylene-ethyl acetate copolymer, ethylene-methyl acrylate copolymer, ethylene-acrylic acid Ester copolymer, butadiene-styrene rubber, Polystyrene-Polyethylene-polybutene-polystyrene, polystyrene-poly butylene-polystyrene, One of ACR elastomer, methyl methacrylate, butadiene and styrene copolymer or at least two mixture.
5. solar cell backboard substrate described in one of -4 according to claim 1, which is characterized in that the compatilizer is poly- second Alkene-g- maleic anhydride, polypropylene-g- maleic anhydride, ethylene-propylene copolymer-g- maleic anhydride, polyethylene-g- metering system Acid glycidyl ester, polypropylene-g- glycidyl methacrylate, ethylene-propylene copolymer-g- Glycidyl methacrylate are sweet Grease, polyolefin elastomer-g- maleic anhydride, bibasic ethylene propylene rubber-g- maleic anhydride, ethylene propylene diene rubber-g- maleic anhydride, Ethylene-ethyl acetate copolymer-g- maleic anhydride, ethylene-methyl acrylate copolymer-g- maleic anhydride, ethylene-acrylic acid Ester copolymer-g- maleic anhydride, butadiene-styrene rubber-g- maleic anhydride, Polystyrene-Polyethylene-polybutene-polystyrene-g- horse Come acid anhydrides, polystyrene-poly butylene-polystyrene-g- maleic anhydride, polyolefin elastomer-g- methyl propenoic acid glycidyl Ester, bibasic ethylene propylene rubber-g- glycidyl methacrylate, ethylene propylene diene rubber-g- glycidyl methacrylate, second Alkene-acetate copolymer-g- glycidyl methacrylate, ethylene-methyl acrylate copolymer-g- methacrylic acid Ethylene oxidic ester, vinyl-acrylate copolymer-g- glycidyl methacrylate, the contracting of butadiene-styrene rubber-g- methacrylic acid Water glyceride, Polystyrene-Polyethylene-polybutene-polystyrene-g- glycidyl methacrylate and polystyrene-poly One of butylene-polystyrene-g- glycidyl methacrylate or at least two mixture；
Preferably, the inorganic filler is one of talcum powder, titanium dioxide, montmorillonite, whisker, mica powder and calcium carbonate or extremely Few two kinds of mixture；
Preferably, the auxiliary agent is antioxidant and/or hydrolysis agent；
Preferably, the fire retardant is to have one of halogen fire retardant, halogen-free flame retardants or inorganic matter；
Preferably, the fire retardant is one of aluminium hydroxide, magnesium hydroxide or bromobenzene.
6. solar cell backboard substrate described in one of -5 according to claim 1, which is characterized in that the solar battery back Plate substrate is made of core layer and adhesive layer；
Preferably, by weight, the adhesive layer includes following components:
Preferably, the inorganic filler is titanium dioxide or carbon black；
Preferably, the polyolefin blend is polyolefin and polyamide, ultra-high molecular weight polyethylene, cycloolefin, nylon or ASA At least one of mixture；
Preferably, the polyolefin is one of polyethylene, polypropylene, ethylene-propylene copolymer and cycloolefin or at least two The mixture of kind；
Preferably, the polyolefin blend is the copolymer of polyethylene and polyamide, the polyethylene and the polyamide Mass ratio is (1:10)~(10:1)；
Preferably, the ultra-high molecular weight polyethylene is the polyethylene that molecular weight is 1,000,000 or more；
Preferably, the polyethylene is one of low density polyethylene (LDPE), high density polyethylene (HDPE), linear low density polyethylene or extremely Few two kinds of mixture；
Preferably, the auxiliary agent is the mixture of antioxidant and resistance to ultraviolet auxiliary agent；
Preferably, the mass ratio of the antioxidant and the resistance to ultraviolet auxiliary agent is (1:3)~(3:1).
7. a kind of preparation method of solar cell backboard substrate as described in claim 1, which is characterized in that the preparation side Method is, by weight, by 60~85 parts of polyolefin, 1~30 part of heat-resisting reinforced resin, 1~5 part of toughener, 1~5 The compatilizer, 0~20 part of inorganic filler, 0~3 part of auxiliary agent and 0~30 part of fire retardant blending extrusion film forming of part, are prepared into To the solar cell backboard substrate with core layer.
8. preparation method according to claim 7, which is characterized in that the solar cell backboard substrate further includes easy to stick Layer is connect, the core layer and the adhesive layer pass through film extrusion；
Preferably, the mode of the film extrusion is one of biaxial tension, simple tension, the tape casting or rolling process.
9. a kind of solar cell backboard, which is characterized in that the solar cell backboard include the resistance to ultraviolet layer set gradually, Glue layer, core layer described in claim 1, adhesive layer and/or easy adhesive coating.
10. solar cell backboard according to claim 9, which is characterized in that the resistance to ultraviolet layer is resistance to ultraviolet fluorine film Or resistance to ultraviolet pet layer；
Preferably, the easy adhesive coating is fluorine-containing coat or acrylic acid coatings.
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Application publication date: 20190319