CN107841029A - A kind of solar cell backboard high-weatherability PE films - Google Patents
A kind of solar cell backboard high-weatherability PE films Download PDFInfo
- Publication number
- CN107841029A CN107841029A CN201710038654.7A CN201710038654A CN107841029A CN 107841029 A CN107841029 A CN 107841029A CN 201710038654 A CN201710038654 A CN 201710038654A CN 107841029 A CN107841029 A CN 107841029A
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- Prior art keywords
- parts
- master batch
- films
- aging
- solar cell
- Prior art date
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- 239000004594 Masterbatch (MB) Substances 0.000 claims abstract description 95
- 230000003712 anti-aging effect Effects 0.000 claims abstract description 77
- 239000004698 Polyethylene Substances 0.000 claims abstract description 70
- 229920000092 linear low density polyethylene Polymers 0.000 claims abstract description 52
- 239000004707 linear low-density polyethylene Substances 0.000 claims abstract description 52
- 239000002131 composite material Substances 0.000 claims abstract description 42
- 229920001903 high density polyethylene Polymers 0.000 claims abstract description 16
- 239000004700 high-density polyethylene Substances 0.000 claims abstract description 16
- 239000002994 raw material Substances 0.000 claims abstract description 16
- 238000002844 melting Methods 0.000 claims abstract description 11
- 230000008018 melting Effects 0.000 claims abstract description 11
- 238000010096 film blowing Methods 0.000 claims abstract description 10
- 239000003963 antioxidant agent Substances 0.000 claims description 58
- 230000003078 antioxidant effect Effects 0.000 claims description 57
- 239000000654 additive Substances 0.000 claims description 29
- 230000000996 additive effect Effects 0.000 claims description 29
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 28
- 238000002156 mixing Methods 0.000 claims description 23
- 150000001412 amines Chemical class 0.000 claims description 20
- 238000005469 granulation Methods 0.000 claims description 20
- 230000003179 granulation Effects 0.000 claims description 20
- 239000004611 light stabiliser Substances 0.000 claims description 20
- 239000006096 absorbing agent Substances 0.000 claims description 19
- 229920006026 co-polymeric resin Polymers 0.000 claims description 18
- HDERJYVLTPVNRI-UHFFFAOYSA-N ethene;ethenyl acetate Chemical compound C=C.CC(=O)OC=C HDERJYVLTPVNRI-UHFFFAOYSA-N 0.000 claims description 16
- 239000003795 chemical substances by application Substances 0.000 claims description 15
- 235000010215 titanium dioxide Nutrition 0.000 claims description 14
- 239000012528 membrane Substances 0.000 claims description 13
- -1 Propionic acid octadecanol ester Chemical class 0.000 claims description 10
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 claims description 10
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims description 7
- 229910052757 nitrogen Inorganic materials 0.000 claims description 7
- ZNQVEEAIQZEUHB-UHFFFAOYSA-N 2-ethoxyethanol Chemical compound CCOCCO ZNQVEEAIQZEUHB-UHFFFAOYSA-N 0.000 claims description 5
- XITRBUPOXXBIJN-UHFFFAOYSA-N bis(2,2,6,6-tetramethylpiperidin-4-yl) decanedioate Chemical compound C1C(C)(C)NC(C)(C)CC1OC(=O)CCCCCCCCC(=O)OC1CC(C)(C)NC(C)(C)C1 XITRBUPOXXBIJN-UHFFFAOYSA-N 0.000 claims description 5
- 150000002148 esters Chemical class 0.000 claims description 5
- FKRCODPIKNYEAC-UHFFFAOYSA-N ethyl propionate Chemical compound CCOC(=O)CC FKRCODPIKNYEAC-UHFFFAOYSA-N 0.000 claims description 5
- SSDSCDGVMJFTEQ-UHFFFAOYSA-N octadecyl 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 SSDSCDGVMJFTEQ-UHFFFAOYSA-N 0.000 claims description 5
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 claims description 5
- 235000019260 propionic acid Nutrition 0.000 claims description 5
- GXURZKWLMYOCDX-UHFFFAOYSA-N 2,2-bis(hydroxymethyl)propane-1,3-diol;dihydroxyphosphanyl dihydrogen phosphite Chemical class OP(O)OP(O)O.OCC(CO)(CO)CO GXURZKWLMYOCDX-UHFFFAOYSA-N 0.000 claims description 4
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 4
- 229940049706 benzodiazepine Drugs 0.000 claims description 4
- GLDOVTGHNKAZLK-UHFFFAOYSA-N n-octadecyl alcohol Natural products CCCCCCCCCCCCCCCCCCO GLDOVTGHNKAZLK-UHFFFAOYSA-N 0.000 claims description 4
- PWWSSIYVTQUJQQ-UHFFFAOYSA-N distearyl thiodipropionate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCSCCC(=O)OCCCCCCCCCCCCCCCCCC PWWSSIYVTQUJQQ-UHFFFAOYSA-N 0.000 claims description 3
- KWUZCAVKPCRJPO-UHFFFAOYSA-N n-ethyl-4-(6-methyl-1,3-benzothiazol-2-yl)aniline Chemical compound C1=CC(NCC)=CC=C1C1=NC2=CC=C(C)C=C2S1 KWUZCAVKPCRJPO-UHFFFAOYSA-N 0.000 claims description 3
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 3
- OKOBUGCCXMIKDM-UHFFFAOYSA-N Irganox 1098 Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)NCCCCCCNC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 OKOBUGCCXMIKDM-UHFFFAOYSA-N 0.000 claims description 2
- 239000004408 titanium dioxide Substances 0.000 claims description 2
- DKCPKDPYUFEZCP-UHFFFAOYSA-N 2,6-di-tert-butylphenol Chemical class CC(C)(C)C1=CC=CC(C(C)(C)C)=C1O DKCPKDPYUFEZCP-UHFFFAOYSA-N 0.000 claims 1
- RPBCDDTWDKYNQY-UHFFFAOYSA-N o-dodecyl propanethioate Chemical compound CCCCCCCCCCCCOC(=S)CC RPBCDDTWDKYNQY-UHFFFAOYSA-N 0.000 claims 1
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical class OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 claims 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 abstract description 61
- 229920005989 resin Polymers 0.000 abstract description 10
- 239000011347 resin Substances 0.000 abstract description 10
- 239000005038 ethylene vinyl acetate Substances 0.000 abstract 2
- 239000010408 film Substances 0.000 description 72
- 235000006708 antioxidants Nutrition 0.000 description 50
- 230000032683 aging Effects 0.000 description 18
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- 150000001875 compounds Chemical class 0.000 description 13
- 238000005336 cracking Methods 0.000 description 10
- 229910052724 xenon Inorganic materials 0.000 description 8
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 8
- CXMXRPHRNRROMY-UHFFFAOYSA-L sebacate(2-) Chemical compound [O-]C(=O)CCCCCCCCC([O-])=O CXMXRPHRNRROMY-UHFFFAOYSA-L 0.000 description 7
- 230000001070 adhesive effect Effects 0.000 description 6
- 230000008901 benefit Effects 0.000 description 6
- 239000002033 PVDF binder Substances 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 5
- 238000002310 reflectometry Methods 0.000 description 5
- 229940116351 sebacate Drugs 0.000 description 5
- 239000010409 thin film Substances 0.000 description 4
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 3
- 239000002313 adhesive film Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910052731 fluorine Inorganic materials 0.000 description 3
- 239000011737 fluorine Substances 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000000051 modifying effect Effects 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 238000004806 packaging method and process Methods 0.000 description 3
- HEJCZAMFVMNFLC-UHFFFAOYSA-N 10-oxo-10-(2,2,6,6-tetramethylpiperidin-4-yl)oxydecanoic acid Chemical compound CC1(C)CC(OC(=O)CCCCCCCCC(O)=O)CC(C)(C)N1 HEJCZAMFVMNFLC-UHFFFAOYSA-N 0.000 description 2
- DGIRHPMUWGNFDO-UHFFFAOYSA-N 4-[[3,5-bis[(3,5-ditert-butyl-4-hydroxyphenyl)methyl]-1,3,5-triazinan-1-yl]methyl]-2,6-ditert-butylphenol Chemical class CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CN2CN(CC=3C=C(C(O)=C(C=3)C(C)(C)C)C(C)(C)C)CN(CC=3C=C(C(O)=C(C=3)C(C)(C)C)C(C)(C)C)C2)=C1 DGIRHPMUWGNFDO-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000012752 auxiliary agent Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 235000019441 ethanol Nutrition 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229920001684 low density polyethylene Polymers 0.000 description 2
- 239000004702 low-density polyethylene Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 2
- 229920002799 BoPET Polymers 0.000 description 1
- SIKJAQJRHWYJAI-UHFFFAOYSA-N Indole Chemical class C1=CC=C2NC=CC2=C1 SIKJAQJRHWYJAI-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000003679 aging effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000012760 heat stabilizer Substances 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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- C08K13/06—Pretreated ingredients and ingredients covered by the main groups C08K3/00 - C08K7/00
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/08—Copolymers of ethene
-
- 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
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/16—Applications used for films
- C08L2203/162—Applications used for films sealable films
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
- C08L2203/204—Applications use in electrical or conductive gadgets use in solar cells
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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
- 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
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- 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
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- 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
- C08L2207/062—HDPE
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- Y02E10/50—Photovoltaic [PV] energy
Abstract
A kind of solar cell backboard high-weatherability PE films, it is made up of inside and outside three layers melting coextrusion film blowing, wherein internal layer accounts for composite film thickness 20 ~ 40%, is composed of the following raw materials by weight：100 parts of LLDPE, 5 ~ 20 parts of ethylene-vinyl acetate copolymer resins, 6 ~ 15 parts of white master batch, anti-4 ~ 10 parts of UV anti-aging master batch；Middle level accounts for composite film thickness 25 ~ 40%, is composed of the following raw materials by weight：100 parts of high density polyethylene (HDPE), 6 ~ 15 parts of white master batch, anti-4 ~ 10 parts of UV anti-aging master batch；Outer layer accounts for composite film thickness 20 ~ 40%, is composed of the following raw materials by weight：100 parts of LLDPE, 3 ~ 15 parts of ethylene-vinyl acetate copolymer resins, 6 ~ 15 parts of white master batch, anti-4 ~ 10 parts of UV anti-aging master batch.PE films of the present invention have high-weatherability and excellent in dimension stability, disclosure satisfy that solar cell backboard durability and stability requirement, extend solar cell service life.
Description
Technical field
The present invention relates to a kind of solar cell backboard high-weatherability PE films.
Background technology
With the progress of crystal silicon solar batteries photoelectric conversion technology, the solar cell power generation with environmental protection and energy saving advantage
Technology is used widely and promoted, and has thus driven the great market demand of backboard membrane used for solar batteries.Solar cell
Backboard is located at the back side of solar cell module, and cell piece is played a part of protecting and supported.Solar cell uses the longevity
Life is general to be required to reach more than 25 years, and backboard membrane is used as the encapsulating material directly with external environment condition bump contact, it is necessary to is had
The performances such as standby remarkable ageing-resistant (damp and hot, xeothermic, ultraviolet), resistance to electric insulation, water oxygen barrier and dimensionally stable.If backboard
Film can not be subjected to protean adverse circumstances test, for example the undesirable conditions such as layering, cracking, foaming, xanthochromia, deformation occur,
Cause battery module to come off, cell piece sliding, battery effective output decline phenomena such as, then the reliability of solar cell,
Stability can not just be protected with durability, or even trigger bigger quality accident.Therefore solar cell backboard is weather-proof
Property and dimensional stability are most important to the aging effects of battery component.
Polymer thin-film material with single performance advantage can not meet the requirement of solar cell backboard, generally
Solar cell backboard is prepared using the thin-film material of multilayer performance complement together by composite adhesive compound sticking.It is early
The phase back board structure of solar cell popularization and application is typically combined by three-layer thin-film, i.e., double-deck fluorine film structure PVF/PET/
PVF or PVDF/PET/PVDF.It is expensive because the production environmental pollution of the fluorine resins such as PVF or PVDF is very big, with
The enhancing of people's health consciousness, more and more stricter to environmental requirement, people start to develop PVF or PVDF replacement membrane material.Tool
There is the polyethylene film of environment-friendly advantage and price advantage to start to be concerned by people, i.e. individual layer fluorine film structure PE/PET/PVF or
Very big attention of the exploitation of PE/PET/PVDF solar cell backboards with application by people.But unmodified PE films is weather-proof
Performance and dimensional stability are poor, the quality problems such as layering, cracking and thermal contraction easily occur, are produced with the method for modifying of routine
PE films are also difficult to meet long service life（25 years）And dimensional stability requirements.Therefore, the research of UV anti-aging master batches is resisted
Studied with PE membrane surface modifications, the developmental research for the purpose of reaching the weather resistance and dimensional stability that improve PE films is capable
In the industry the problem of extensive concern.
The content of the invention
The purpose of the present invention is to overcome the above-mentioned deficiency of prior art and provide a kind of solar cell backboard high durable
Property PE films, have high-weatherability can and good dimensional stability, disclosure satisfy that solar cell backboard durability, reliability
With the performance requirement of stability, extend the service life of solar cell.
Technical program of the present invention lies in：Internal layer, middle level and outer layer obtain composite membrane by melting coextrusion film blowing.Wherein：
Internal layer accounts for composite film thickness 20 ~ 40%, is made up of the raw material of following parts by weight：
100 parts of LLDPE
5 ~ 20 parts of ethene-vinyl acetate copolymer resins
6 ~ 15 parts of white master batch
Anti- 4 ~ 10 parts of UV anti-aging master batch
Middle level accounts for composite film thickness 25 ~ 40%, is made up of the raw material of following parts by weight：
100 parts of HDPE
6 ~ 15 parts of white master batch
Anti- 4 ~ 10 parts of UV anti-aging master batch
Outer layer accounts for composite film thickness 20 ~ 40%, is made up of the raw material of following parts by weight：
100 parts of LLDPE
3 ~ 15 parts of ethene-vinyl acetate copolymer resins
6 ~ 15 parts of white master batch
Anti- 4 ~ 10 parts of UV anti-aging master batch
Medium high density polyethylene of the present invention（HDPE）And LLDPE（LLDPE）It is conventional film class polyolefin
Resin, ethene-vinyl acetate copolymer resins（EVA）As improve film surface adhesive property modified resin, white master batch and
Anti- UV anti-aging master batch each serves as the effect for improving reflectivity of optical thin film and weather resistance.
Internal layer key component is using LLDPE as matrix resin, is mete-wand with LLDPE100 parts, presses
EVA5 ~ 20 part are separately added into according to mass ratio, 6 ~ 15 parts of white master batch, anti-4 ~ 10 parts of UV anti-aging master batch is well mixed to be formed, main
Act on be by adding EVA and LLDPE blending and modifyings, introducing EVA macromolecular chains to adjust film surface polarity and surface energy,
" similar to mix " principle is utilized to have so as to PE films and the EVA packaging adhesive films of later process in molding recombination process is pressurizeed in heating
Higher adhesive strength and good dimensional stability.Add white master batch be in order to improve reflectivity of the PE films to sunshine,
And then improve the electricity conversion of cell piece；It is to improve the weather resistance of PE films to add anti-UV anti-aging master batch.
Middle level key component is using high density polyethylene (HDPE) as matrix resin, is mete-wand with HDPE100 parts, according to quality
Than being separately added into 6 ~ 15 parts of white master batch, anti-4 ~ 10 parts of UV anti-aging master batch is well mixed to be formed, and main function is to improve film
Tensile strength and elongation at break, while keep PE films that there is higher reflectivity and weather resistance to sunshine.
Outer layer key component is using LLDPE as matrix resin, is mete-wand with LLDPE100 parts, presses
3 ~ 15 parts of EVA is separately added into according to mass ratio, 6 ~ 15 parts of white master batch, anti-4 ~ 10 parts of UV anti-aging master batch is well mixed to be formed, main
Act on be by adding EVA and LLDPE blending and modifyings, introducing EVA macromolecular chains to adjust film surface polarity and surface energy,
There is certain tack by assigning PE films surface from the EVA resin of different VA contents simultaneously, so as to improve PE films to PET
（Polyethylene terephthalate）The adhesive strength of base material.PE film reflectivity can be improved by adding white master batch, add anti-UV
Anti-aging master batch is to improve the weather resistance of PE films.
Vinyl acetate in the ethene-vinyl acetate copolymer resins of the internal layer（VA）Content is 5 ~ 14%；The second of the outer layer
Vinyl acetate in alkene-vinyl acetate copolymer resins（VA）Content is 18 ~ 24%.
The white master batch is by the rutile type titanium white and LLDPE that are coated through sieve and silica-sesquioxide binary
Mixing granulation forms, and wherein the quality proportioning of rutile type titanium white and LLDPE is 50 ~ 75：25~50wt%.
The anti-UV anti-aging master batch is formed by anti-UV anti-aging function additive with LLDPE mixing granulation,
The quality proportioning of its moderate resistance UV anti-aging function additive and LLDPE is 25 ~ 50：50~75wt%；The anti-UV prevents
Aging function additive is UV absorbers, hindered amine light stabilizer, primary antioxidant, auxiliary antioxidant.
The UV absorbers are by commercially available 2- (2,- hydroxy-tert-butyl -3,,5,- diamyl phenyl) -5- chloro benzos
Triazole (UV-328), 2,2,- di-2-ethylhexylphosphine oxide (4- t-octyl -6- BTAs phenol) (UV-360), 2- (2,- hydroxyl -3,
5,- dicumylphenyl) one or more in BTA (UV-234) are mixed.
The hindered amine light stabilizer is by commercially available double (1,2,2,6,6- pentamethyl -4- piperidyls) sebacate (UV-
292), poly-succinic (4- hydroxyl -2,2,6,6- tetramethyl -1- piperidine ethanols) ester (UV-622), it is double (2,2,6,6- tetramethyls -
4- piperidyls) one or more in sebacate (UV-770) are mixed.
The primary antioxidant by commercially available β-（3,5- di-tert-butyl-hydroxy phenyls）Propionic acid octadecanol ester（Antioxidant-
1076）, double (2,4- tert-butyl-phenyls) pentaerythritol diphosphites (antioxidant 626), the double octadecyls of thio-2 acid
One or more in (antioxidant DSTP) are mixed.
The auxiliary antioxidant is by commercially available N, N,- hexamethylene bis（3,5- di-t-butyl -4- hydroxyacrylamides）(antioxygen
Agent 1098), 1,3,5- tri- (3,5- di-tert-butyl-4-hydroxyl benzyls) -1,3,5- triazines -2,4,6 (1H, 3H, 5H) triketone it is (anti-
Oxygen agent 3114), pentaerythrite four (3- lauryl thiopropionates) (antioxidant 412S), 2,2,Double [the 3- of-sulfurous ethyl glycol
（3,5- di-tert-butyl-hydroxy phenyls）Propionic ester] one or more in (antioxidant 1035) are mixed.
Effective content of the anti-UV anti-aging master batch moderate resistance UV anti-aging function additive in PE films is 1.0 ~ 3.0%, excellent
Select 1.5 ~ 2.8%.
PE/PET of the present invention is hot and humid after composite adhesive compound sticking（Double 85 standards）Aging 96h, peel off strong
Degree >=3.5N/cm.
PE/EVA of the present invention is pressurizeed by heating after molding compound sticking, peel strength >=65N/cm.
After PE/PET compound stickings of the present invention, by 1000W xenon lamp ultraviolet ageing 500h, no cracking, no cissing, yellowness index≤3.
The advantage of the invention is that：The PE films that PE films are prepared using inside and outside three layers melting coextru-lamination assign each layer respectively
Difference in functionality, film surface is modified.First, ethene-vinyl acetate copolymer resins is introduced in inner layer film（EVA）Resin,
Vinyl acetate（VA）Content selects 5-14%, and PE films surface is changed using the performance advantage of ethene-vinyl acetate copolymer resins
Property.Due to introducing VAM on EVA strands, so as to reduce the crystallinity of PE films, improve PE films pliability,
Impact resistance and heat sealing performance, filler compatibility good EVA and bridging property, female with white master batch and anti-UV anti-aging in addition
Function additive has good compatibility in grain, can further improve the weather resistance of PE films.The internal layer of PE films will in the present invention
Hot pressing compound sticking is carried out with EVA packaging adhesive films in solar cell module, according to " similar to mix " principle, internal layer contains EVA
PE films will have higher interfacial adhesion strength with EVA packaging adhesive films, so as to improve the dimensional stability of backboard.Secondly, outer layer
High vinyl acetate is introduced in film（VA）The EVA resin of content, VA contents 18-24%, the EVA itself of high VA contents have necessarily
Tack, with LLDPE blending made of PE films surface there is relatively low initial bonding strength, one can be entered after being bonded by composite adhesive
Step improves compound sticking intensity of the PE films to PET film, so as to improve the dimensional stability of backboard.
Function additive selects the rutile type titanium white by sieve and silica-sesquioxide binary cladding, titanium in white master batch of the present invention
White powder granule-morphology is spherical, 5 ~ 15 μm of particle size distribution range, is formed with film-grade LLDPE mixing granulation, its
The quality proportioning of middle rutile type titanium white and LLDPE is 50 ~ 75：25~50wt%.Titanium dioxide is in PE films
Content is controlled in the range of 4 ~ 10%, it is ensured that PE films have preferable reflectivity to sunshine, have to improving PE film weather resistances
Preferably synergy.
Function additive is formed from the component compounding of a variety of difference in functionalitys in the anti-UV anti-aging master batch of the present invention, is contained respectively
UV absorbers, hindered amine light stabilizer, primary antioxidant and auxiliary antioxidant, the function additive and line of 4 kinds of different performances
Property low density polyethylene (LDPE) mixing granulation, the quality proportioning of anti-UV anti-aging function additive and LLDPE is 25 ~ 60：
40~75wt%.Wherein UV absorbers shared 10 ~ 20wt% of mass ratio in function additive, hindered amine light stabilizer is in work(
Shared 15 ~ 30wt% of mass ratio in energy auxiliary agent, primary antioxidant shared 25 ~ 35wt% of mass ratio, auxiliary antioxidant in function additive
Shared 10 ~ 25wt% of mass ratio in function additive.Various functions auxiliary agent mixes, and can play synergy, effectively carry
The high weather resistance of PE films.
Embodiment
The invention will be further described with reference to embodiments.
Embodiment 1
Internal layer, middle level and outer layer obtain composite membrane by melting coextrusion film blowing, are made up of respectively the raw material of following parts by weight：
Internal layer accounts for composite film thickness 25%：
100 parts of LLDPE
15 parts of EVA
13 parts of white master batch
Anti- 9 parts of UV anti-aging master batch
Middle level accounts for composite film thickness 40%：
100 parts of HDPE
13 parts of white master batch
Anti- 10 parts of UV anti-aging master batch
Outer layer accounts for composite film thickness 35%：
100 parts of LLDPE
15 parts of EVA
13 parts of white master batch
Anti- 9 parts of UV anti-aging master batch
Wherein, ethene-vinyl acetate copolymer resins（EVA）Melt flow rate (MFR) be 1.5g/10min, VA contents in internal layer EVA
VA contents 18% in 14%, outer layer EVA.
White master batch presses 65 by the rutile type titanium white coated through sieve and silica-sesquioxide binary with LLDPE：
35wt% quality proportioning mixing granulation forms.
Anti- UV anti-aging master batch presses 40 by anti-UV anti-aging function additive and LLDPE：60wt% quality
Proportioning mixing granulation forms.Effective content of the anti-UV anti-aging function additive in PE films is 2.8%.Anti- UV anti-aging function helps
Agent is UV absorbers, hindered amine light stabilizer, primary antioxidant, auxiliary antioxidant.UV absorbers are 2- (2,- hydroxyl
Base-the tert-butyl group -3,,5,- diamyl phenyl) -5- chloro benzos triazole (UV-328), hindered amine light stabilizer for it is double (1,
2,2,6,6- pentamethyl -4- piperidyls) sebacate (UV-292), primary antioxidant be β -（3,5- di-t-butyl -4- hydroxy benzenes
Base）Propionic acid octadecanol ester（Antioxidant -1076）, auxiliary antioxidant N, N,- hexamethylene bis（3,5- di-t-butyl -4-
Hydroxyacrylamide）(antioxidant 1098).
The main performance index that the present embodiment product reaches：
Fracture tensile strength（MPa）：25.1（Longitudinal direction）, 20.8（Laterally）；Elongation at break（%）：825（Longitudinal direction）, 515（It is horizontal
To）；PE/PET compound sticking intensity（N/cm）：6.5（Initial bonding strength）, 4.0（Peel strength after double 85 aging 96h）；PE/
EVA is molded combined strength bination（N/cm）：82（Peel strength）；Anti-ultraviolet ageing performance：1000W xenon lamps irradiate 500h, no cracking, nothing
Cissing, yellowness index 1.5.
Embodiment 2
Internal layer, middle level and outer layer obtain composite membrane by melting coextrusion film blowing, are made up of respectively the raw material of following parts by weight：
Internal layer accounts for composite film thickness 20%：
100 parts of LLDPE
12 parts of EVA
12 parts of white master batch
Anti- 7 parts of UV anti-aging master batch
Middle level accounts for composite film thickness 40%：
100 parts of HDPE
15 parts of white master batch
Anti- 9 parts of UV anti-aging master batch
Outer layer accounts for composite film thickness 40%：
100 parts of LLDPE
15 parts of EVA
12 parts of white master batch
Anti- 7 parts of UV anti-aging master batch
Wherein, ethene-vinyl acetate copolymer resins（EVA）Melt flow rate (MFR) be 2.0g/10min, VA contents in internal layer EVA
VA contents 18% in 5%, outer layer EVA.
White master batch presses 50 by the rutile type titanium white coated through sieve and silica-sesquioxide binary with LLDPE：
50wt% quality proportioning mixing granulation forms.
Anti- UV anti-aging master batch presses 25 by anti-UV anti-aging function additive and LLDPE：75wt% quality
Proportioning mixing granulation forms.Effective content of the anti-UV anti-aging function additive in PE films is 2.0%.Anti- UV anti-aging function helps
Agent is UV absorbers, hindered amine light stabilizer, primary antioxidant, auxiliary antioxidant, heat stabilizer.UV absorbers are
2,2,- di-2-ethylhexylphosphine oxide (4- t-octyl -6- BTAs phenol) (UV-360), hindered amine light stabilizer is poly-succinic (4-
Hydroxyl -2,2,6,6- tetramethyl -1- piperidine ethanols) ester (UV-622), primary antioxidant is double (2,4- tert-butyl-phenyl) Ji Wusi
Alcohol diphosphites (antioxidant 626), auxiliary antioxidant 1,3,5- tri- (3,5- di-tert-butyl-4-hydroxyl benzyl) -1,3,
5- triazines -2,4,6 (1H, 3H, 5H) triketone (antioxidant 3114).
The main performance index that the present embodiment product reaches：
Fracture tensile strength（MPa）：28.1（Longitudinal direction）, 22.8（Laterally）；Elongation at break（%）：655（Longitudinal direction）, 489（It is horizontal
To）；PE/PET compound sticking intensity（N/cm）：7.0（Initial bonding strength）, 4.5（Peel strength after double 85 aging 96h）；PE/
EVA is molded combined strength bination（N/cm）：75（Peel strength）；Anti-ultraviolet ageing performance：1000W xenon lamps irradiate 500h, no cracking, nothing
Cissing, yellowness index 1.8.
Embodiment 3
Internal layer, middle level and outer layer obtain composite membrane by melting coextrusion film blowing, are made up of respectively the raw material of following parts by weight：
Internal layer accounts for composite film thickness 35%：
100 parts of LLDPE
5 parts of EVA
6 parts of white master batch
Anti- 10 parts of UV anti-aging master batch
Middle level accounts for composite film thickness 30%：
100 parts of HDPE
15 parts of white master batch
Anti- 10 parts of UV anti-aging master batch
Outer layer accounts for composite film thickness 35%：
100 parts of LLDPE
3 parts of EVA
10 parts of white master batch
Anti- 4 parts of UV anti-aging master batch
Wherein, ethene-vinyl acetate copolymer resins（EVA）Melt flow rate (MFR) be 3.5g/10min, VA contents in internal layer EVA
VA contents 24% in 5%, outer layer EVA.
White master batch presses 75 by the rutile type titanium white coated through sieve and silica-sesquioxide binary with LLDPE：
25wt% quality proportioning mixing granulation forms.
Anti- UV anti-aging master batch presses 50 by anti-UV anti-aging function additive and LLDPE：50wt% quality
Proportioning mixing granulation forms.Effective content of the anti-UV anti-aging function additive in PE films is 2.8%.Anti- UV anti-aging function helps
Agent is UV absorbers, hindered amine light stabilizer, primary antioxidant, auxiliary antioxidant.UV absorbers are 2- (2,- hydroxyl
Base -3,5,- dicumylphenyl) BTA (UV-234), hindered amine light stabilizer is double (2,2,6,6- tetramethyl -4-
Piperidyl) sebacate (UV-770), primary antioxidant is the double octadecyls (antioxidant DSTP) of thio-2 acid, and auxiliary is anti-
Oxygen agent is pentaerythrite four (3- lauryl thiopropionates) (antioxidant 412S).
The main performance index that the present embodiment product reaches：
Fracture tensile strength（MPa）：23.1（Longitudinal direction）, 21.1（Laterally）；Elongation at break（%）：865（Longitudinal direction）, 525（It is horizontal
To）；PE/PET compound sticking intensity（N/cm）：7.0（Initial bonding strength）, 5.3（Peel strength after double 85 aging 96h）；PE/
EVA is molded combined strength bination（N/cm）：78（Peel strength）；Anti-ultraviolet ageing performance：1000W xenon lamps irradiate 500h, no cracking, nothing
Cissing, yellowness index 2.6.
Embodiment 4
Internal layer, middle level and outer layer obtain composite membrane by melting coextrusion film blowing, are made up of respectively the raw material of following parts by weight：
Internal layer accounts for composite film thickness 30%：
100 parts of LLDPE
20 parts of EVA
15 parts of white master batch
Anti- 4 parts of UV anti-aging master batch
Middle level accounts for composite film thickness 35%：
100 parts of HDPE
6 parts of white master batch
Anti- 10 parts of UV anti-aging master batch
Outer layer accounts for composite film thickness 35%：
100 parts of LLDPE
10 parts of EVA
6 parts of white master batch
Anti- 5 parts of UV anti-aging master batch
Wherein, ethene-vinyl acetate copolymer resins（EVA）Melt flow rate (MFR) be 3.0g/10min, VA contents in internal layer EVA
VA contents 24% in 14%, outer layer EVA.
White master batch presses 55 by the rutile type titanium white coated through sieve and silica-sesquioxide binary with LLDPE：
45wt% quality proportioning mixing granulation forms.
Anti- UV anti-aging master batch presses 40 by anti-UV anti-aging function additive and LLDPE：60wt% quality
Proportioning mixing granulation forms.Effective content of the anti-UV anti-aging function additive in PE films is 2.0%.Anti- UV anti-aging function helps
Agent is UV absorbers, hindered amine light stabilizer, primary antioxidant, auxiliary antioxidant.UV absorbers are 2- (2,- hydroxyl
Base -3,5,- dicumylphenyl) BTA (UV-234), hindered amine light stabilizer be poly-succinic (4- hydroxyls -2,2,
6,6- tetramethyl -1- piperidine ethanols) ester (UV-622), primary antioxidant be β -（3,5- di-tert-butyl-hydroxy phenyls）Propionic acid ten
Eight carbon alcohol esters（Antioxidant -1076）, auxiliary antioxidant 2,2,Double [the 3- of-sulfurous ethyl glycol（3,5- di-t-butyl -4- hydroxyls
Base phenyl）Propionic ester] (antioxidant 1035).
The main performance index that the present embodiment product reaches：
Fracture tensile strength（MPa）：30.1（Longitudinal direction）, 25.8（Laterally）；Elongation at break（%）：915（Longitudinal direction）, 836（It is horizontal
To）；PE/PET compound sticking intensity（N/cm）：8.0（Initial bonding strength）, 5.0（Peel strength after double 85 aging 96h）；PE/
EVA is molded combined strength bination（N/cm）：81 （Peel strength）；Anti-ultraviolet ageing performance：1000W xenon lamps irradiation 500h, no cracking,
Without cissing, yellowness index 1.9.
Embodiment 5
Internal layer, middle level and outer layer obtain composite membrane by melting coextrusion film blowing, are made up of respectively the raw material of following parts by weight：
Internal layer accounts for composite film thickness 35%：
100 parts of LLDPE
10 parts of EVA
8 parts of white master batch
Anti- 10 parts of UV anti-aging master batch
Middle level accounts for composite film thickness 25%：
100 parts of HDPE
10 parts of white master batch
Anti- 4 parts of UV anti-aging master batch
Outer layer accounts for composite film thickness 40%：
100 parts of LLDPE
5 parts of EVA
15 parts of white master batch
Anti- 6 parts of UV anti-aging master batch
Wherein, ethene-vinyl acetate copolymer resins（EVA）Melt flow rate (MFR) be 1.0g/10min, VA contents in internal layer EVA
VA contents 18% in 10%, outer layer EVA.
White master batch presses 60 by the rutile type titanium white coated through sieve and silica-sesquioxide binary with LLDPE：
40wt% quality proportioning mixing granulation forms.
Anti- UV anti-aging master batch presses 35 by anti-UV anti-aging function additive and LLDPE：65wt% quality
Proportioning mixing granulation forms.Effective content of the anti-UV anti-aging function additive in PE films is 1.9%.Anti- UV anti-aging function helps
Agent is UV absorbers, hindered amine light stabilizer, primary antioxidant, auxiliary antioxidant.UV absorbers are 2- (2,- hydroxyl
Base-the tert-butyl group -3,,5,- diamyl phenyl) -5- chloro benzos triazole (UV-328), hindered amine light stabilizer for it is double (1,
2,2,6,6- pentamethyl -4- piperidyls) sebacate (UV-292), primary antioxidant be β -（3,5- di-t-butyl -4- hydroxy benzenes
Base）Propionic acid octadecanol ester（Antioxidant -1076）It is (anti-oxidant with double (2,4- tert-butyl-phenyls) pentaerythritol diphosphites
Agent 626) according to mass ratio 50:50wt% is used in mixed way, auxiliary antioxidant 2,2,Double [the 3- of-sulfurous ethyl glycol（The uncles of 3,5- bis-
Butyl -4- hydroxy phenyls）Propionic ester] (antioxidant 1035).
The main performance index that the present embodiment product reaches：
Fracture tensile strength（MPa）：22.2（Longitudinal direction）, 19.6（Laterally）；Elongation at break（%）：1086（Longitudinal direction）, 886（It is horizontal
To）；PE/PET compound sticking intensity（N/cm）：7.7（Initial bonding strength）, 5.1（Peel strength after double 85 aging 96h）；PE/
EVA is molded combined strength bination（N/cm）：87（Peel strength）；Anti-ultraviolet ageing performance：1000W xenon lamps irradiate 500h, no cracking, nothing
Cissing, yellowness index 1.2.
Embodiment 6
Internal layer, middle level and outer layer obtain composite membrane by melting coextrusion film blowing, are made up of respectively the raw material of following parts by weight：
Internal layer accounts for composite film thickness 40%：
100 parts of LLDPE
8 parts of EVA
7 parts of white master batch
Anti- 5 parts of UV anti-aging master batch
Middle level accounts for composite film thickness 40%：
100 parts of HDPE
9 parts of white master batch
Anti- 5 parts of UV anti-aging master batch
Outer layer accounts for composite film thickness 20%：
100 parts of LLDPE
8 parts of EVA
10 parts of white master batch
Anti- 5 parts of UV anti-aging master batch
Wherein, ethene-vinyl acetate copolymer resins（EVA）Melt flow rate (MFR) be 2.5g/10min, VA contents in internal layer EVA
VA contents 18% in 14%, outer layer EVA.
White master batch presses 70 by the rutile type titanium white coated through sieve and silica-sesquioxide binary with LLDPE：
30wt% quality proportioning mixing granulation forms.
Anti- UV anti-aging master batch presses 45 by anti-UV anti-aging function additive and LLDPE：55wt% quality
Proportioning mixing granulation forms.Effective content of the anti-UV anti-aging function additive in PE films is 1.5%.Anti- UV anti-aging function helps
Agent is UV absorbers, hindered amine light stabilizer, primary antioxidant, auxiliary antioxidant.UV absorbers are 2- (2,- hydroxyl
Base -3,5,- dicumylphenyl) BTA (UV-234), hindered amine light stabilizer for it is double (1,2,2,6,6- pentamethyl-
4- piperidyls) sebacate (UV-292) and poly-succinic (4- hydroxyl -2,2,6,6- tetramethyl -1- piperidine ethanols) ester (UV-
622) according to mass ratio 60:40wt% is used in mixed way, and primary antioxidant is double (2,4- tert-butyl-phenyl) pentaerythrite diphosphorous acids
Ester (antioxidant 626), auxiliary antioxidant 2,2,Double [the 3- of-sulfurous ethyl glycol（3,5- di-tert-butyl-hydroxy phenyls）
Propionic ester] (antioxidant 1035).
The main performance index that the present embodiment product reaches：
Fracture tensile strength（MPa）：25.7（Longitudinal direction）, 20.6（Laterally）；Elongation at break（%）：886（Longitudinal direction）, 686（It is horizontal
To）；PE/PET compound sticking intensity（N/cm）：7.0（Initial bonding strength）, 4.7（Peel strength after double 85 aging 96h）；PE/
EVA is molded combined strength bination（N/cm）：97（Peel strength）；Anti-ultraviolet ageing performance：1000W xenon lamps irradiate 500h, no cracking, nothing
Cissing, yellowness index 1.9.
Embodiment 7
Internal layer, middle level and outer layer obtain composite membrane by melting coextrusion film blowing, are made up of respectively the raw material of following parts by weight：
Internal layer accounts for composite film thickness 30%：
100 parts of LLDPE
5 parts of EVA
10 parts of white master batch
Anti- 4 parts of UV anti-aging master batch
Middle level accounts for composite film thickness 40%：
100 parts of HDPE
10 parts of white master batch
Anti- 10 parts of UV anti-aging master batch
Outer layer accounts for composite film thickness 30%：
100 parts of LLDPE
10 parts of EVA
8 parts of white master batch
Anti- 4 parts of UV anti-aging master batch
Wherein, ethene-vinyl acetate copolymer resins（EVA）Melt flow rate (MFR) be 2.0g/10min, VA contents in internal layer EVA
VA contents 18% in 5%, outer layer EVA.
White master batch presses 60 by the rutile type titanium white coated through sieve and silica-sesquioxide binary with LLDPE：
40wt% quality proportioning mixing granulation forms.
Anti- UV anti-aging master batch presses 30 by anti-UV anti-aging function additive and LLDPE：70wt% quality
Proportioning mixing granulation forms.Effective content of the anti-UV anti-aging function additive in PE films is 1.5%.Anti- UV anti-aging function helps
Agent is UV absorbers, hindered amine light stabilizer, primary antioxidant, auxiliary antioxidant.UV absorbers are 2,2,- methylene
Base double (4- t-octyl -6- BTAs phenol) (UV-360) and 2- (2,- hydroxyl -3,5,- dicumylphenyl) three nitrogen of benzo
Azoles (UV-234) is according to mass ratio 70:30wt% is used in mixed way, and hindered amine light stabilizer is double (2,2,6,6- tetramethyl -4-
Piperidyl) sebacate (UV-770), primary antioxidant is that double (2,4- tert-butyl-phenyl) pentaerythritol diphosphites are (anti-oxidant
Agent 626), auxiliary antioxidant 1,3,5- tri- (3,5- di-tert-butyl-4-hydroxyl benzyl) -1,3,5-triazines -2,4,6 (1H, 3H,
5H) triketone (antioxidant 3114) and pentaerythrite four (3- lauryl thiopropionates) (antioxidant 412S) are according to mass ratio 40:
60wt% is used in mixed way.
The main performance index that the present embodiment product reaches：
Fracture tensile strength（MPa）：26.1（Longitudinal direction）, 21.9（Laterally）；Elongation at break（%）：786（Longitudinal direction）, 586（It is horizontal
To）；PE/PET compound sticking intensity（N/cm）：7.4（Initial bonding strength）, 5.1（Peel strength after double 85 aging 96h）；PE/
EVA is molded combined strength bination（N/cm）：93（Peel strength）；Anti-ultraviolet ageing performance：1000W xenon lamps irradiate 500h, no cracking, nothing
Cissing, yellowness index 1.8.
Claims (9)
- A kind of 1. solar cell backboard high-weatherability PE films, it is characterised in that：The PE films are led to by internal layer, middle level and outer layer Cross melting coextrusion film blowing and obtain composite membrane, wherein：Internal layer accounts for composite film thickness 20 ~ 40%, is made up of the raw material of following parts by weight：100 parts of LLDPE5 ~ 20 parts of ethene-vinyl acetate copolymer resins6 ~ 15 parts of white master batchAnti- 4 ~ 10 parts of UV anti-aging master batchMiddle level accounts for composite film thickness 25 ~ 40%, is made up of the raw material of following parts by weight：100 parts of high density polyethylene (HDPE)6 ~ 15 parts of white master batchAnti- 4 ~ 10 parts of UV anti-aging master batchOuter layer accounts for composite film thickness 20 ~ 40%, is made up of the raw material of following parts by weight：100 parts of LLDPE3 ~ 15 parts of ethene-vinyl acetate copolymer resins6 ~ 15 parts of white master batchAnti- 4 ~ 10 parts of UV anti-aging master batch.
- 2. solar cell backboard according to claim 1 high-weatherability PE films, it is characterised in that：The second of the internal layer Vinyl acetate in alkene-vinyl acetate copolymer resins（VA）Content is 5 ~ 14%；The ethene-vinyl acetate copolymer resins of the outer layer Middle vinyl acetate（VA）Content is 18 ~ 24%.
- 3. solar cell backboard according to claim 1 high-weatherability PE films, it is characterised in that：The white master batch By being formed through the rutile type titanium white that sieve and silica-sesquioxide binary coats and LLDPE mixing granulation, wherein golden red The quality proportioning of stone-type titanium dioxide and LLDPE is 50 ~ 75：25~50wt%.
- 4. solar cell backboard according to claim 1 high-weatherability PE films, it is characterised in that：The anti-UV is anti-old Change master batch to be formed with LLDPE mixing granulation by anti-UV anti-aging function additive, its moderate resistance UV anti-aging functions help The quality proportioning of agent and LLDPE is 25 ~ 50：50~75wt%；The anti-UV anti-aging function additive is UV absorbers, hindered amine light stabilizer, primary antioxidant, auxiliary antioxygen Agent.
- 5. solar cell backboard according to claim 4 high-weatherability PE films, it is characterised in that：The ultraviolet light is inhaled Agent is received by 2- (2,- hydroxy-tert-butyl -3,,5,- diamyl phenyl) -5- chloro benzos triazole (UV-328), 2,2,- methylene Double (4- t-octyl -6- BTAs phenol) (UV-360), the 2- (2 of base,- hydroxyl -3,5,- dicumylphenyl) BTA (UV-234) one or more in are mixed.
- 6. solar cell backboard according to claim 4 high-weatherability PE films, it is characterised in that：The hindered amines Light stabilizer by double (1,2,2,6,6- pentamethyl -4- piperidyls) sebacates (UV-292), poly-succinic (4- hydroxyl -2,2, 6,6- tetramethyl -1- piperidine ethanols) ester (UV-622), bis(2,2,6,6-tetramethyl-4-piperidyl)sebacate (UV-770) In one or more be mixed.
- 7. solar cell backboard according to claim 4 high-weatherability PE films, it is characterised in that：The primary antioxidant By β-（3,5- di-tert-butyl-hydroxy phenyls）Propionic acid octadecanol ester（Antioxidant -1076）, double (2,4- tert-butyl-phenyls) One kind in the double octadecyls (antioxidant DSTP) of pentaerythritol diphosphites (antioxidant 626), thio-2 acid or It is several to be mixed.
- 8. solar cell backboard according to claim 4 high-weatherability PE films, it is characterised in that：The auxiliary antioxygen Agent is by N, N,- hexamethylene bis（3,5- di-t-butyl -4- hydroxyacrylamides）(the antioxidant 1098), (3,5- bis- of 1,3,5- tri- Tertiary butyl-4-hydroxy benzyl) -1,3,5- triazines -2,4,6 (1H, 3H, 5H) triketone (antioxidant 3114), (3- of pentaerythrite four Lauryl thiopropionate) (antioxidant 412S), 2,2,Double [the 3- of-sulfurous ethyl glycol（3,5- di-t-butyl -4- hydroxy benzenes Base）Propionic ester] one or more in (antioxidant 1035) are mixed.
- 9. solar cell backboard according to claim 4 high-weatherability PE films, it is characterised in that：The anti-UV is anti-old It is 1.0 ~ 3.0%, preferably 1.5 ~ 2.8% to change effective content of the master batch moderate resistance UV anti-aging function additive in PE films.
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| JP2019179916A (en) * | 2018-03-30 | 2019-10-17 | 大日本印刷株式会社 | Sealing material sheet for electronic device |
| JP2019179914A (en) * | 2018-03-30 | 2019-10-17 | 大日本印刷株式会社 | Seal-material sheet for solar battery module |
| CN110861376A (en) * | 2019-12-02 | 2020-03-06 | 上海紫江彩印包装有限公司 | Polyolefin film for transparent back plate film and preparation method thereof |
| CN111253655A (en) * | 2019-12-23 | 2020-06-09 | 浙江瑞堂塑料科技股份有限公司 | High-weather-resistance polyethylene composite material and preparation method thereof |
| CN112708185A (en) * | 2020-12-26 | 2021-04-27 | 重庆柏纳伟晟新材料科技有限公司 | Ultraviolet-resistant polyethylene functional master batch |
| WO2021099569A1 (en) * | 2019-11-22 | 2021-05-27 | Dsm Advanced Solar B.V. | Photovoltaic module backsheet comprising polyolefin layers |
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