CN104868002A - Weather-proof solar cell back panel base membrane and preparation method thereof - Google Patents
Weather-proof solar cell back panel base membrane and preparation method thereof Download PDFInfo
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- CN104868002A CN104868002A CN201510135998.0A CN201510135998A CN104868002A CN 104868002 A CN104868002 A CN 104868002A CN 201510135998 A CN201510135998 A CN 201510135998A CN 104868002 A CN104868002 A CN 104868002A
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- Prior art keywords
- solar cell
- basement membrane
- weather
- mylar
- cell backboard
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- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 239000012528 membrane Substances 0.000 title abstract 7
- 229920006267 polyester film Polymers 0.000 claims abstract description 69
- 230000005540 biological transmission Effects 0.000 claims abstract description 30
- 239000000463 material Substances 0.000 claims abstract description 16
- 210000002469 basement membrane Anatomy 0.000 claims description 179
- 229920002799 BoPET Polymers 0.000 claims description 130
- 239000005041 Mylar™ Substances 0.000 claims description 128
- 238000001704 evaporation Methods 0.000 claims description 92
- 230000008020 evaporation Effects 0.000 claims description 92
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 claims description 72
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 65
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 65
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 60
- 238000001771 vacuum deposition Methods 0.000 claims description 60
- 230000029087 digestion Effects 0.000 claims description 56
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 54
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 54
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 54
- 229920000728 polyester Polymers 0.000 claims description 37
- 229920001634 Copolyester Polymers 0.000 claims description 36
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 36
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 claims description 30
- 239000011787 zinc oxide Substances 0.000 claims description 30
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 27
- 238000001816 cooling Methods 0.000 claims description 27
- 238000005485 electric heating Methods 0.000 claims description 27
- 238000010438 heat treatment Methods 0.000 claims description 27
- 230000003287 optical effect Effects 0.000 claims description 27
- 238000005096 rolling process Methods 0.000 claims description 27
- 238000007493 shaping process Methods 0.000 claims description 27
- 235000012239 silicon dioxide Nutrition 0.000 claims description 27
- 239000000377 silicon dioxide Substances 0.000 claims description 27
- 239000000758 substrate Substances 0.000 claims description 27
- 239000004408 titanium dioxide Substances 0.000 claims description 27
- -1 hydroxyl ethyl Chemical group 0.000 claims description 20
- YIMQCDZDWXUDCA-UHFFFAOYSA-N [4-(hydroxymethyl)cyclohexyl]methanol Chemical compound OCC1CCC(CO)CC1 YIMQCDZDWXUDCA-UHFFFAOYSA-N 0.000 claims description 19
- 239000002202 Polyethylene glycol Substances 0.000 claims description 18
- CDQSJQSWAWPGKG-UHFFFAOYSA-N butane-1,1-diol Chemical compound CCCC(O)O CDQSJQSWAWPGKG-UHFFFAOYSA-N 0.000 claims description 18
- 229920001223 polyethylene glycol Polymers 0.000 claims description 18
- 239000000203 mixture Substances 0.000 claims description 12
- 238000005516 engineering process Methods 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 7
- 230000003647 oxidation Effects 0.000 claims description 6
- 238000007254 oxidation reaction Methods 0.000 claims description 6
- 238000006116 polymerization reaction Methods 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims 6
- 229920001225 polyester resin Polymers 0.000 abstract description 6
- 239000004645 polyester resin Substances 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000002457 bidirectional effect Effects 0.000 abstract 1
- 238000009835 boiling Methods 0.000 abstract 1
- 239000010408 film Substances 0.000 description 116
- 238000000034 method Methods 0.000 description 30
- 229920005644 polyethylene terephthalate glycol copolymer Polymers 0.000 description 18
- 238000000576 coating method Methods 0.000 description 17
- 239000011248 coating agent Substances 0.000 description 15
- 229920005989 resin Polymers 0.000 description 13
- 239000011347 resin Substances 0.000 description 13
- FDSYTWVNUJTPMA-UHFFFAOYSA-N 2-[3,9-bis(carboxymethyl)-3,6,9,15-tetrazabicyclo[9.3.1]pentadeca-1(15),11,13-trien-6-yl]acetic acid Chemical compound C1N(CC(O)=O)CCN(CC(=O)O)CCN(CC(O)=O)CC2=CC=CC1=N2 FDSYTWVNUJTPMA-UHFFFAOYSA-N 0.000 description 12
- 229920001707 polybutylene terephthalate Polymers 0.000 description 12
- 230000007062 hydrolysis Effects 0.000 description 6
- 238000006460 hydrolysis reaction Methods 0.000 description 6
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 5
- 229910052731 fluorine Inorganic materials 0.000 description 5
- 239000011737 fluorine Substances 0.000 description 5
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 230000006750 UV protection Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 239000004594 Masterbatch (MB) Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 125000001153 fluoro group Chemical group F* 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 230000004224 protection Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229920006126 semicrystalline polymer Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D7/00—Producing flat articles, e.g. films or sheets
- B29D7/01—Films or sheets
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention discloses a weather-proof solar cell back panel base membrane and a preparation method thereof. The base membrane is characterized in that a PET polyester resin and other polyester resins are blended and then are processed by bidirectional stretching to form a polyester film and then oxide with the thinness of 30nm to 90 nm is evaporated and plated on the polyester film. The thickness of the base membrane is 50 microns to 350 microns. The mass proportion of the materials in the polyester film is 3-9 to 1 of the PET polyester resin to other polyester resins. The base membrane is steamed and boiled under the temperature of 121 DEG C to attenuate the fracture elongation to 10%; and the boiling time is 150h to 203h. In the test environment with the temperature of 38 DEG C and 90% RH, the moisture-vapor transmission of the base membrane is 0.1 to 0.5g/m<2>*24H. After 300-kwh/m<2> energy irradiation of a UVA-340 ultraviolet lamp, the yellow stain value delta b is 0.3 to 1. The provided base membrane is suitable for manufacturing a solar photovoltaic cell back panel material.
Description
Technical field
The invention belongs to polyester is the function film and preparation method thereof of material, and particularly weather-proof solar cell backboard basement membrane of one and preparation method thereof, the weather-proof solar cell backboard basement membrane of the present invention is applicable to the manufacture of solar photovoltaic cell backplane material.
Background technology
In recent years along with the development of photovoltaic industry, fluorine film+PET(is namely: PETG) battery back-sheet of film+fluorine film (being called for short TPT) structure is one of backboard of current main flow, due to the producer that global Fu Mo supplier only has Dupont, Japan AGC, French A Kema etc. few in number, fluorine film holds at high price; Meanwhile, fluorine film refractory organics, to the contaminative of environment, cause the weather-proof PET film of alternative fluorine film become people fall over each other study problem.From the technology trends of current solar cell backboard weatherability PET, mainly carry out around uvioresistant and resistant to hydrolysis two aspect.
In prior art, manufacture the resistant to hydrolysis PET of resistance to ultraviolet technology polyester film and carry out thin film fabrication mainly through mother material and coating process.Wherein, mother material solar energy backboard basement membrane manufactures, carry out single or multiple lift mainly through masterbatch such as interpolation ultra-violet absorber, hydrolysis-resisting agent, inorganic fillers and extrude realization, this kind of method is improved largely to PET film resistant to hydrolysis and uvioresistant performance, but due to moisture and the sunlight of hydrolysis-resisting agent and the direct Long Term Contact open air of ultraviolet-resistant absorbent, easy generation hydrolysis and light degradation, auxiliary agent function reduces gradually, causes solar energy backboard basement membrane hydraulic performance decline.Coating solar energy backboard basement membrane manufactures, mainly contain coating fluoro coatings and evaporation metal oxide two class mode, this mode can have very large lifting to solar cell PET backboard basement membrane resistant to hydrolysis and ultra-violet resistance, but solar cell backboard PET basement membrane is a kind of semi-crystalline polymer, in Long-Time Service process, by the impact of temperature, PET basement membrane degree of crystallinity increases gradually, and backboard machinery performance degradation is severe, loses efficacy faster.Therefore no matter mother material or coating technique, though be greatly improved to the resistant to hydrolysis of PET basement membrane and uvioresistant performance, the PET basement membrane required from backboard reaches useful life of 25 years or far from being enough.
Summary of the invention
Object of the present invention is intended to overcome above-mentioned deficiency of the prior art, provides a kind of weather-proof solar cell backboard basement membrane and preparation method thereof.The present invention is in the preparation of weather-proof solar cell backboard basement membrane, by adopting PET mylar and other mylar blending and modifying, reduce PET crystalline rate, mode again through biaxial tension masking prepares biaxially oriented polyester film, finally again biaxially oriented polyester film is passed through surperficial evaporation oxide, thus obtained a kind of weather-proof solar cell backboard basement membrane of good performance.
Content of the present invention is: a kind of weather-proof solar cell backboard basement membrane, it is characterized in that: described weather-proof solar cell backboard basement membrane by PET mylar and other mylar blended after through the obtained polyester film of biaxial tension, and again on polyester film (employing art methods) evaporation thickness be the oxide composition of 30nm ~ 90nm;
Described weather-proof solar cell backboard basement membrane thickness is 50 μm ~ 350 μm;
In described polyester film, the mass ratio of material is PET mylar: other mylar=3 ~ 9:1;
The inherent viscosity of described PET mylar is 0.60dL/g ~ 0.85dL/g;
Other mylar described is: by polyethylene glycol, propylene glycol, butanediol, 1, the two hydroxyl ethyl ester-5-benzene sulfonic acid sodium salt, 1 of 3-dioctyl phthalate, one or more and M-phthalic acid, terephthalic acid (TPA), 1 in 4-cyclohexanedimethanol, (any one) all polyester or copolyesters that one or more (employing art methods) in 4-cyclohexane cyclohexanedimethanodibasic, NDA are polymerized and are formed;
The inherent viscosity of other mylar described is 0.50dL/g ~ 0.80dL/g;
Described oxide is any one in silicon dioxide, titanium dioxide, alundum (Al2O3), zinc oxide.
In content of the present invention: described weather-proof solar cell backboard basement membrane is when 121 DEG C of thermophilic digestions make elongation at break decay to 10%, and digestion time is 150h ~ 203h; Described weather-proof solar cell backboard basement membrane is 38 DEG C, 90%RH(RH and relative humidity) under test environment, moisture-vapor transmission is 0.1 ~ 0.5g/m
224h; Described weather-proof solar cell backboard basement membrane at UVA-340 uviol lamp through 300kwh/m
2after energy exposure, xanthochromia value Δ b is 0.3 ~ 1.
In content of the present invention: other mylar described can replace with: by ethylene glycol and M-phthalic acid, 1, (any one) all polyester or copolyesters that one or more (employing art methods) in 4-cyclohexane cyclohexanedimethanodibasic, NDA are polymerized and are formed.
In content of the present invention: other mylar described can also replace with: by polyethylene glycol, propylene glycol, butanediol, 1, the two hydroxyl ethyl ester-5-benzene sulfonic acid sodium salt of 3-dioctyl phthalate, 1, one or more and M-phthalic acid in 4-cyclohexanedimethanol, terephthalic acid (TPA), 1, 4-cyclohexane cyclohexanedimethanodibasic, 2, the equal polyester that one or more (employing art methods) in 6-naphthalenedicarboxylic acid are polymerized and are formed or copolyesters, and by ethylene glycol and M-phthalic acid, 1, 4-cyclohexane cyclohexanedimethanodibasic, 2, in 6-naphthalenedicarboxylic acid one or more (employing art methods) polymerization and formed equal polyester or copolyesters in, any two or three kinds of mixing compositions in all equal polyester or copolyesters.
Another content of the present invention is: a kind of preparation method of weather-proof solar cell backboard basement membrane, it is characterized in that step is:
A, prepare polyester film:
By the PET mylar of 3 ~ 9 mass parts and other mylar of 1 mass parts at baking temperature is 150 DEG C ~ 170 DEG C, after dry 2h ~ 4h, extrude at 265 DEG C ~ 285 DEG C temperature through extruder, slab is made again through 15 DEG C ~ 20 DEG C cold drums, slab first carries out longitudinal stretching 2.5 ~ 3.5 times at 70 DEG C ~ 80 DEG C, then temperature 15 DEG C ~ 20 DEG C is cooled to through 1s ~ 5s, cross directional stretch 2.5 ~ 3.5 times is carried out again at 110 DEG C ~ 130 DEG C, film through biaxial tension enters electric heating passage heat set zone, wherein: first district's temperature is 225 DEG C ~ 240 DEG C, secondth district is 225 DEG C ~ 240 DEG C, 3rd district is 225 DEG C ~ 240 DEG C, 4th district is 225 DEG C ~ 240 DEG C, 5th district is 225 DEG C ~ 240 DEG C, 6th district is 160 DEG C ~ 180 DEG C, film thermal shaping time is 8s ~ 120s, film through heat set zone is again through 60 DEG C ~ 70 DEG C, the cooling in two stages under 1s ~ 20s and room temperature, rolling, namely (crystalline rate is lower) polyester film is obtained,
The inherent viscosity of described PET mylar is 0.60dL/g ~ 0.85dL/g;
Other mylar described is: by polyethylene glycol, propylene glycol, butanediol, 1, the two hydroxyl ethyl ester-5-benzene sulfonic acid sodium salt, 1 of 3-dioctyl phthalate, one or more and M-phthalic acid, terephthalic acid (TPA), 1 in 4-cyclohexanedimethanol, (any one) all polyester or copolyesters that one or more (employing art methods) in 4-cyclohexane cyclohexanedimethanodibasic, NDA are polymerized and are formed;
The inherent viscosity of other mylar described is 0.50dL/g ~ 0.80dL/g;
B, prepare weather-proof solar cell backboard basement membrane:
(crystalline rate is lower) polyester film that step a is obtained, by adopting vacuum coating (existing) technology of optical vacuum coating machine evaporation oxidation thing, by oxide evaporation on polyester film, obtained evaporation has oxide, thickness to be the weather-proof solar cell backboard basement membrane of 50 μm ~ 350 μm; The running parameter of described vacuum coating equipment is: supervisory wavelength is 520nm ~ 550nm, and plated film vacuum degree is 1 × 10
-3pa ~ 3 × 10
-3pa, base plate heating temperature is 20 DEG C ~ 30 DEG C, and substrate speed is 20rpm ~ 30rpm, and the voltage of electron gun is-6kV ~-10kV, and the evaporation rate of oxide is 5/s ~ 10/s; In described weather-proof solar cell backboard basement membrane, the thickness of evaporation oxide is 30nm ~ 90nm;
Described oxide is any one in silicon dioxide, titanium dioxide, alundum (Al2O3), zinc oxide.
In another content of the present invention: weather-proof solar cell backboard basement membrane obtained described in step b is when 121 DEG C of thermophilic digestions make elongation at break decay to 10%, and digestion time is 150h ~ 203h; Described weather-proof solar cell backboard basement membrane is 38 DEG C, 90%RH(RH and relative humidity) under test environment, moisture-vapor transmission is 0.1 ~ 0.5g/m
224h; Described weather-proof solar cell backboard basement membrane at UVA-340 uviol lamp through 300kwh/m
2after energy exposure, xanthochromia value Δ b is 0.3 ~ 1.
In another content of the present invention: described in step a, other mylar can replace with: by ethylene glycol and M-phthalic acid, 1, (any one) all polyester or copolyesters that one or more (employing art methods) in 4-cyclohexane cyclohexanedimethanodibasic, NDA are polymerized and are formed.
In another content of the present invention: described in step a, other mylar can also replace with: by polyethylene glycol, propylene glycol, butanediol, 1, the two hydroxyl ethyl ester-5-benzene sulfonic acid sodium salt of 3-dioctyl phthalate, 1, one or more and M-phthalic acid in 4-cyclohexanedimethanol, terephthalic acid (TPA), 1, 4-cyclohexane cyclohexanedimethanodibasic, 2, the equal polyester that one or more (employing art methods) in 6-naphthalenedicarboxylic acid are polymerized and are formed or copolyesters, and by ethylene glycol and M-phthalic acid, 1, 4-cyclohexane cyclohexanedimethanodibasic, 2, in 6-naphthalenedicarboxylic acid one or more (employing art methods) polymerization and formed equal polyester or copolyesters in, any two or three kinds of mixing compositions in all equal polyester or copolyesters.
Compared with prior art, the present invention has features and beneficial effect:
(1) solar cell backboard basement membrane of the present invention, blended and carried out modification owing to have passed different mylar, greatly reduce intermolecular regularity, the thin-film material be made up of different polyester resin system is after film forming, the reason such as vary in size because of intermolecular locational space and regularity is little, crystalline rate is slack-off, thus extends the rise time of weather-proof solar cell backboard basement membrane degree of crystallinity; Embodiments of the invention data show: through weather-proof solar cell backboard basement membrane that the present invention obtains when 121 DEG C of thermophilic digestions make elongation at break decay to 10%, digestion time is at more than 150h, and the out-of-service time of commercially available similar solar cell backboard basement membrane (resin system fusing point Tm >=255 DEG C, PET resin is greater than 90%) elongation at break when decaying to 10% is 60h ~ 100h;
(2) solar cell backboard basement membrane of the present invention, is formed with fine and close oxide coating at film surface, can greatly improves film water stop function; Embodiments of the invention data show: the solar cell backboard basement membrane moisture-vapor transmission≤0.5g/m obtained through the present invention
224h(test condition: 38 DEG C, 90%RH), and the moisture-vapor transmission 1.0g/m of commercially available similar solar cell backboard basement membrane (resin system fusing point Tm>=255 DEG C, PET resin is greater than 90%)
224h ~ 5.0g/m
224h;
(3) solar cell backboard basement membrane of the present invention, is formed with fine and close oxide coating at film surface, also greatly can improves film ultra-violet resistance energy, and the solar cell backboard basement membrane obtained through the present invention is irradiating 300kwh/m at UVA-340 uviol lamp
2after energy, xanthochromia value Δ b≤1, and commercially available similar solar cell backboard basement membrane (resin system fusing point Tm>=255 DEG C, PET resin is greater than 90%) xanthochromia value Δ b is 3 ~ 5;
(4) solar cell backboard basement membrane product preparation process of the present invention is simple, and operation is easy, easily operates, practical.
Embodiment
The invention will be further described for embodiment plan given below; but can not be interpreted as it is limiting the scope of the invention; some nonessential improvement and adjustment that person skilled in art makes the present invention according to the content of the invention described above, still belong to protection scope of the present invention.
Material therefor PETG (being called for short PET) resin in following examples, isophthalate modified PETG (being called for short IPET) resin, PTT (being called for short PTT) resin, polybutylene terephthalate (PBT) (being called for short PBT), poly-2, 6-(ethylene naphthalate) (being called for short PEN) resin, 1, PETG (the being called for short PETG) resin of 4-cyclohexanedimethanol modification, 1, PETG (the being called for short PCTA) resin of 4-cyclohexane cyclohexanedimethanodibasic modification, 1, the two hydroxyl ethyl ester-5-benzene sulfonic acid sodium salt modification PETG of 3-dioctyl phthalate (being called for short CDP) resin is the conventional mill run in existing chemical materials market.
Embodiment 1:
Be the inherent viscosity of 0.80dL/g PET mylar and 100 ㎏ by the inherent viscosity of 900 ㎏ be that 0.70dL/g IPET mylar is at baking temperature is 165 DEG C, after dry 4h, extrude at 283 DEG C of temperature through extruder, slab is made again through 16 DEG C of cold drums, slab first carries out longitudinal stretching 3.0 times at 75 DEG C, then 18 DEG C are cooled to through 5s, cross directional stretch 3.0 times is carried out again at 125 DEG C, film through biaxial tension enters electric heating passage heat set zone, wherein the firstth district is 225 DEG C, secondth district is 228 DEG C, 3rd district is 228 DEG C, 4th district is 228 DEG C, 5th district is 225 DEG C, 6th district is 175 DEG C, film thermal shaping time is 120s, film through heat set zone is again through 65 DEG C, the cooling in two stages under 20s and room temperature, rolling, obtain the polyester film that crystalline rate is lower, again through optical vacuum coating machine steam coating silicon dioxide, obtain 350 μm of weather-proof solar cell backboard basement membranes, the running parameter of its vacuum coating equipment is: supervisory wavelength is 520nm, and plated film vacuum degree is 2 × 10
-3pa, base plate heating temperature is 25 DEG C, and substrate speed is 25rpm, and the voltage of electron gun is-8kV, and the evaporation rate of silicon dioxide is 8/s, the thickness of steam coating silicon dioxide is 60nm.
The weather-proof solar cell backboard basement membrane that this example obtains is when 121 DEG C of thermophilic digestions make elongation at break decay to 10%, and digestion time reaches 186h; Basement membrane 38 DEG C, under 90%RH environment, moisture-vapor transmission is 0.2g/m
224h; Basement membrane is through UVA-340 ultra violet lamp 300kwh/m
2after energy, xanthochromia value Δ b is 0.4.
Embodiment 2:
Be the inherent viscosity of 0.75dL/g PET mylar and 100 ㎏ by the inherent viscosity of 800 ㎏ be that 0.55dL/g PEN mylar is at baking temperature is 165 DEG C, after dry 3.5h, extrude at 275 DEG C of temperature through extruder, slab is made again through 18 DEG C of cold drums, slab first carries out longitudinal stretching 3.0 times at 75 DEG C, then 15 DEG C are cooled to through 2.5s, cross directional stretch 3.0 times is carried out again at 120 DEG C, film through biaxial tension enters electric heating passage heat set zone, wherein the firstth district is 225 DEG C, secondth district is 230 DEG C, 3rd district is 230 DEG C, 4th district is 230 DEG C, 5th district is 230 DEG C, 6th district is 170 DEG C, film thermal shaping time is 85s, film through heat set zone is again through 65 DEG C, the cooling in two stages under 14s and room temperature, rolling, obtain the polyester film that crystalline rate is lower, again through optical vacuum coating machine evaporation titanium dioxide, obtain 250 μm of weather-proof solar cell backboard basement membranes, the running parameter of its vacuum coating equipment is: supervisory wavelength is 520nm, and plated film vacuum degree is 2 × 10
-3pa, base plate heating temperature is 25 DEG C, and substrate speed is 25rpm, and the voltage of electron gun is-8kV, and the evaporation rate of titanium dioxide is 8/s, the thickness of evaporation titanium dioxide is 50nm.
The weather-proof solar cell backboard basement membrane that this example obtains is when 121 DEG C of thermophilic digestions make elongation at break decay to 10%, and digestion time reaches 165h; Basement membrane 38 DEG C, under 90%RH environment, moisture-vapor transmission is 0.3g/m
2.24h; Basement membrane is at UVA-340 ultra violet lamp 300kwh/m
2after energy, xanthochromia value Δ b is 0.5.
Embodiment 3:
Be the inherent viscosity of 0.75dL/g PET mylar and 100 ㎏ by the inherent viscosity of 400 ㎏ be that 0.68dL/g PETG mylar is at baking temperature is 160 DEG C, after dry 3h, extrude at 273 DEG C of temperature through extruder, slab is made again through 18 DEG C of cold drums, slab first carries out longitudinal stretching 3.0 times at 73 DEG C, then 16 DEG C are cooled to through 1.9s, cross directional stretch 3.0 times is carried out again at 120 DEG C, film through biaxial tension enters electric heating passage heat set zone, wherein the firstth district is 225 DEG C, secondth district is 232 DEG C, 3rd district is 232 DEG C, 4th district is 232 DEG C, 5th district is 230 DEG C, 6th district is 170 DEG C, film thermal shaping time is 65s, film through heat set zone is again through 65 DEG C, the cooling in two stages under 11s and room temperature, rolling, obtain the polyester film that crystalline rate is lower, again through optical vacuum coating machine evaporation alundum (Al2O3), obtain 188 μm of weather-proof solar cell backboard basement membranes, the running parameter of its vacuum coating equipment is: supervisory wavelength is 530nm, and plated film vacuum degree is 2 × 10
-3pa, base plate heating temperature is 25 DEG C, and substrate speed is 25rpm, and the voltage of electron gun is-8kV, and the evaporation rate of alundum (Al2O3) is 8/s, the thickness of evaporation alundum (Al2O3) is 60nm.
The weather-proof solar cell backboard basement membrane that this example obtains is when 121 DEG C of thermophilic digestions make elongation at break decay to 10%, and digestion time reaches 157h; Basement membrane 38 DEG C, under 90%RH environment, moisture-vapor transmission is 0.4g/m
224h; Basement membrane is at UVA-340 ultra violet lamp 300kwh/m
2after energy, xanthochromia value Δ b is 0.8.
Embodiment 4:
Be the inherent viscosity of 0.76dL/g PET mylar and 100 ㎏ by the inherent viscosity of 500 ㎏ be that 0.65dL/g PTT mylar is at baking temperature is 155 DEG C, after dry 3h, extrude at 285 DEG C of temperature through extruder, slab is made again through 19 DEG C of cold drums, slab first carries out longitudinal stretching 2.5 times at 77 DEG C, then 19 DEG C are cooled to through 1.5s, cross directional stretch 3.5 times is carried out again at 115 DEG C, film through biaxial tension enters electric heating passage heat set zone, wherein the firstth district is 225 DEG C, secondth district is 234 DEG C, 3rd district is 234 DEG C, 4th district is 234 DEG C, 5th district is 230 DEG C, 6th district is 180 DEG C, film thermal shaping time is 52s, film through heat set zone is again through 67 DEG C, the cooling in two stages under 8.6s and room temperature, rolling, obtain the polyester film that crystalline rate is lower, again through optical vacuum coating machine evaporation titanium dioxide, obtain 150 μm of weather-proof solar cell backboard basement membranes, the running parameter of its vacuum coating equipment is: supervisory wavelength is 540nm, and plated film vacuum degree is 1 × 10
-3pa, base plate heating temperature is 20 DEG C, and substrate speed is 20rpm, and the voltage of electron gun is-6kV, and the evaporation rate of titanium dioxide is 6/s, the thickness of evaporation titanium dioxide is 30nm.
The weather-proof solar cell backboard basement membrane that this example obtains, when 121 DEG C of thermophilic digestions make elongation at break decay to 10%, digestion time reaches 160h; Basement membrane is at 38 DEG C, and under 90%RH test environment, moisture-vapor transmission is 0.4g/m
224h; Basement membrane is through UVA-340 ultra violet lamp 300kwh/m
2after energy, xanthochromia value Δ b is 0.9.
Embodiment 5:
Be the inherent viscosity of 0.70dL/g PET mylar and 100 ㎏ by the inherent viscosity of 600 ㎏ be that 0.65dL/g PBT polyester resin is at baking temperature is 155 DEG C, after dry 3h, extrude at 268 DEG C of DEG C of temperature through extruder, slab is made again through 20 DEG C of cold drums, slab first carries out longitudinal stretching 3.3 times at 76 DEG C, then 16 DEG C are cooled to through 1s, cross directional stretch 3.5 times is carried out again at 130 DEG C, film through biaxial tension enters electric heating passage heat set zone, wherein the firstth district is 228 DEG C, secondth district is 235 DEG C, 3rd district is 235 DEG C, 4th district is 235 DEG C, 5th district is 230 DEG C, 6th district is 180 DEG C, film thermal shaping time is 34s, film through heat set zone is again through 70 DEG C, the cooling in two stages under 5.7s and room temperature, rolling, obtain the polyester film that crystalline rate is lower, again through optical vacuum coating machine evaporation alundum (Al2O3), obtain 100 μm of weather-proof solar cell backboard basement membranes, the running parameter of its vacuum coating equipment is: supervisory wavelength is 550nm, and plated film vacuum degree is 2.5 × 10
-3pa, base plate heating temperature is 20 DEG C, and substrate speed is 30rpm, and the voltage of electron gun is-6kV, and the evaporation rate of alundum (Al2O3) is 7/s, the thickness of evaporation alundum (Al2O3) is 40nm.
The weather-proof solar cell backboard basement membrane that this example obtains, when 121 DEG C of thermophilic digestions make elongation at break decay to 10%, digestion time reaches 159h; Basement membrane is at 38 DEG C, and under 90%RH test environment, moisture-vapor transmission is 0.3g/m
224h; Basement membrane is through UVA-340 ultra violet lamp 300kwh/m
2after energy, xanthochromia value Δ b is 1.0.
Embodiment 6:
Be the inherent viscosity of 0.80dL/g PET mylar and 100 ㎏ by the inherent viscosity of 300 ㎏ be that 0.70dL/g PCTA mylar is at baking temperature is 150 DEG C, after dry 4h, extrude at 280 DEG C of temperature through extruder, slab is made again through 16 DEG C of cold drums, slab first carries out longitudinal stretching 3.0 times at 80 DEG C, then 17 DEG C are cooled to through 2.5s, cross directional stretch 3.5 times is carried out again at 110 DEG C, film through biaxial tension enters electric heating passage heat set zone, wherein the firstth district is 230 DEG C, secondth district is 235 DEG C, 3rd district is 235 DEG C, 4th district is 235 DEG C, 5th district is 230 DEG C, 6th district is 175 DEG C, film thermal shaping time is 85s, film through heat set zone is again through 64 DEG C, the cooling in two stages under 14s and room temperature, rolling, obtain the polyester film that crystalline rate is lower, again through optical vacuum coating machine steam coating silicon dioxide, obtain 250 μm of weather-proof solar cell backboard basement membranes, the running parameter of its vacuum coating equipment is: supervisory wavelength is 540nm, and plated film vacuum degree is 3 × 10
-3pa, base plate heating temperature is 30 DEG C, and substrate speed is 30rpm, and the voltage of electron gun is-9kV, and the evaporation rate of silicon dioxide is 5/s, the thickness of steam coating silicon dioxide is 70nm.
The weather-proof solar cell backboard basement membrane that this example obtains, when 121 DEG C of thermophilic digestions make elongation at break decay to 10%, digestion time reaches 200h; Basement membrane is at 38 DEG C, and under 90%RH test environment, moisture-vapor transmission is 0.5g/m
224h; Basement membrane is through UVA-340 ultra violet lamp 300kwh/m
2after energy, xanthochromia value Δ b is 0.3.
Embodiment 7:
Be the inherent viscosity of 0.75dL/g PET mylar and 100 ㎏ by the inherent viscosity of 700 ㎏ be that 0.75dL/g PETG mylar is at baking temperature is 150 DEG C, after dry 4h, extrude at 282 DEG C of temperature through extruder, slab is made again through 15 DEG C of cold drums, slab first carries out longitudinal stretching 3.5 times at 70 DEG C, then 20 DEG C are cooled to through 0.5s, cross directional stretch 3.0 times is carried out again at 125 DEG C, film through biaxial tension enters electric heating passage heat set zone, wherein the firstth district is 225 DEG C, secondth district is 235 DEG C, 3rd district is 235 DEG C, 4th district is 235 DEG C, 5th district is 225 DEG C, 6th district is 160 DEG C, film thermal shaping time is 17s, film through heat set zone is again through 60 DEG C, the cooling in two stages under 2.8s and room temperature, rolling, obtain the polyester film that crystalline rate is lower, again through optical vacuum coating machine evaporation zinc oxide, obtain 50 μm of weather-proof solar cell backboard basement membranes, the running parameter of its vacuum coating equipment is: supervisory wavelength is 550nm, and plated film vacuum degree is 1 × 10
-3pa, base plate heating temperature is 30 DEG C, and substrate speed is 30rpm, and the voltage of electron gun is-10kV, and the evaporation rate of zinc oxide is 10/s, the thickness of evaporation zinc oxide is 90nm.
The weather-proof solar cell backboard basement membrane that this example obtains, when 121 DEG C of thermophilic digestions make elongation at break decay to 10%, digestion time reaches 196h; Basement membrane is at 38 DEG C, and under 90%RH test environment, moisture-vapor transmission is 0.5g/m
224h; Basement membrane at UVA-340 uviol lamp through 300kwh/m
2after energy exposure, xanthochromia value Δ b is 0.6.
Embodiment 8:
Be other mylar (mass ratio ECDP:PCTA=13:7 of 0.70dL/g PET mylar and 100 ㎏ by the inherent viscosity of 700 ㎏, wherein ECDP inherent viscosity is 0.65dL/g, PCTA inherent viscosity is 0.68dL/g) at baking temperature is 160 DEG C, after dry 3h, extrude at 273 DEG C of temperature through extruder, slab is made again through 18 DEG C of cold drums, slab first carries out longitudinal stretching 3.2 times at 73 DEG C, then 15 DEG C are cooled to through 1s, cross directional stretch 3.4 times is carried out again at 120 DEG C, film through biaxial tension enters electric heating passage heat set zone, wherein the firstth district is 225 DEG C, secondth district is 238 DEG C, 3rd district is 238 DEG C, 4th district is 238 DEG C, 5th district is 230 DEG C, 6th district is 175 DEG C, film thermal shaping time is 34s, film through heat set zone is again through 65 DEG C, the cooling in two stages under 5.7s and room temperature, rolling, obtain the polyester film that crystalline rate is lower, again through optical vacuum coating machine evaporation zinc oxide, obtain 100 μm of weather-proof solar cell backboard basement membranes, the running parameter of its vacuum coating equipment is: supervisory wavelength is 530nm, and plated film vacuum degree is 2 × 10
-3pa, base plate heating temperature is 25 DEG C, and substrate speed is 25rpm, and the voltage of electron gun is-8kV, and the evaporation rate of zinc oxide is 8/s, the thickness of evaporation zinc oxide is 60nm.
The weather-proof solar cell backboard basement membrane that this example obtains is when 121 DEG C of thermophilic digestions make elongation at break decay to 10%, and digestion time reaches 172h; Basement membrane 38 DEG C, under 90%RH environment, moisture-vapor transmission is 0.5g/m
224h; Basement membrane is through UVA-340 ultra violet lamp 300kwh/m
2after energy, xanthochromia value Δ b is 0.7.
Embodiment 9:
Be other mylar (mass ratio IPET:PEN=4:1 of 0.70dL/g PET mylar and 100 ㎏ by the inherent viscosity of 900 ㎏, wherein IPET inherent viscosity is 0.78dL/g, PEN inherent viscosity is 0.55dL/g) at baking temperature is 150 DEG C, after dry 4h, extrude at 278 DEG C of temperature through extruder, slab is made again through 15 DEG C of cold drums, slab first carries out longitudinal stretching 3.5 times at 70 DEG C, then 20 DEG C are cooled to through 1.2s, cross directional stretch 3.2 times is carried out again at 125 DEG C, film through biaxial tension enters electric heating passage heat set zone, wherein the firstth district is 230 DEG C, secondth district is 240 DEG C, 3rd district is 240 DEG C, 4th district is 235 DEG C, 5th district is 230 DEG C, 6th district is 165 DEG C, film thermal shaping time is 43s, film through heat set zone is again through 64 DEG C, the cooling in two stages under 7s and room temperature, rolling, obtain the polyester film that crystalline rate is lower, again through optical vacuum coating machine evaporation zinc oxide, obtain 125 μm of weather-proof solar cell backboard basement membranes, the running parameter of its vacuum coating equipment is: supervisory wavelength is 550nm, and plated film vacuum degree is 1 × 10
-3pa, base plate heating temperature is 23 DEG C, and substrate speed is 20rpm, and the voltage of electron gun is-10kV, and the evaporation rate of zinc oxide is 7/s, the thickness of evaporation zinc oxide is 80nm.
The weather-proof solar cell backboard basement membrane that this example obtains, when 121 DEG C of thermophilic digestions make elongation at break decay to 10%, digestion time reaches 180h; Basement membrane is at 38 DEG C, and under 90%RH test environment, moisture-vapor transmission is 0.4g/m
224h; Basement membrane is through UVA-340 ultra violet lamp 300kwh/m
2after energy, xanthochromia value Δ b is 0.6.
Embodiment 10:
Be other mylar (mass ratio PBT:PEN=2:3 of 0.85dL/g PET mylar and 100 ㎏ by the inherent viscosity of 300 ㎏, wherein PBT inherent viscosity is 0.65dL/g, PEN inherent viscosity is 0.55dL/g) at baking temperature is 150 DEG C, after dry 4h, extrude at 265 DEG C of temperature through extruder, slab is made again through 16 DEG C of cold drums, slab first carries out longitudinal stretching 3.5 times at 80 DEG C, then 17 DEG C are cooled to through 0.5s, cross directional stretch 3.0 times is carried out again at 110 DEG C, film through biaxial tension enters electric heating passage heat set zone, wherein the firstth district is 225 DEG C, secondth district is 235 DEG C, 3rd district is 235 DEG C, 4th district is 235 DEG C, 5th district is 225 DEG C, 6th district is 160 DEG C, film thermal shaping time is 17s, film through heat set zone is again through 60 DEG C, the cooling in two stages under 2.8s and room temperature, rolling, obtain the polyester film that crystalline rate is lower, again through optical vacuum coating machine evaporation titanium dioxide, obtain 50 μm of weather-proof solar cell backboard basement membranes, the running parameter of its vacuum coating equipment is: supervisory wavelength is 540nm, and plated film vacuum degree is 3 × 10
-3pa, base plate heating temperature is 27 DEG C, and substrate speed is 20rpm, and the voltage of electron gun is-7kV, and the evaporation rate of titanium dioxide is 5/s, the thickness of evaporation titanium dioxide is 50nm.
The weather-proof solar cell backboard basement membrane that this example obtains, when 121 DEG C of thermophilic digestions make elongation at break decay to 10%, digestion time reaches 155h; Basement membrane is at 38 DEG C, and under 90%RH test environment, moisture-vapor transmission is 0.5g/m
224h; Basement membrane is through UVA-340 ultra violet lamp 300kwh/m
2after energy, xanthochromia value Δ b is 0.7.
Embodiment 11:
Be other mylar (mass ratio PCTA:CDP=2:5 of 0.80dL/g PET mylar and 100 ㎏ by the inherent viscosity of 800 ㎏, wherein PCTA inherent viscosity is 0.75dL/g, CDP inherent viscosity is 0.50dL/g) at baking temperature is 155 DEG C, after dry 3h, extrude at 284 DEG C of temperature through extruder, slab is made again through 20 DEG C of cold drums, slab first carries out longitudinal stretching 3.5 times at 76 DEG C, then 16 DEG C are cooled to through 2.5s, cross directional stretch 3.5 times is carried out again at 130 DEG C, film through biaxial tension enters electric heating passage heat set zone, wherein the firstth district is 225 DEG C, secondth district is 228 DEG C, 3rd district is 228 DEG C, 4th district is 228 DEG C, 5th district is 225 DEG C, 6th district is 170 DEG C, film thermal shaping time is 85s, film through heat set zone is again through 65 DEG C, the cooling in two stages under 14s and room temperature, rolling, obtain the polyester film that crystalline rate is lower, again through optical vacuum coating machine steam coating silicon dioxide, obtain 250 μm of weather-proof solar cell backboard basement membranes, the running parameter of its vacuum coating equipment is: supervisory wavelength is 520nm, and plated film vacuum degree is 2 × 10
-3pa, base plate heating temperature is 30 DEG C, and substrate speed is 25rpm, and the voltage of electron gun is-10kV, and the evaporation rate of silicon dioxide is 6/s, the thickness of steam coating silicon dioxide is 70nm.
The weather-proof solar cell backboard basement membrane that this example obtains, when 121 DEG C of thermophilic digestions make elongation at break decay to 10%, digestion time reaches 194h; Basement membrane is at 38 DEG C, and under 90%RH test environment, moisture-vapor transmission is 0.3g/m
224h; Basement membrane is through UVA-340 ultra violet lamp 300kwh/m
2after energy, xanthochromia value Δ b is 0.3.
Embodiment 12:
Be other mylar (mass ratio IPET:CDP=1:6 of 0.78dL/g PET mylar and 100 ㎏ by the inherent viscosity of 500 ㎏, wherein IPET inherent viscosity is 0.70dL/g, CDP inherent viscosity is 0.65dL/g) at baking temperature is 155 DEG C, after dry 3h, extrude at 280 DEG C of temperature through extruder, slab is made again through 19 DEG C of cold drums, slab first carries out longitudinal stretching 2.5 times at 77 DEG C, then 19 DEG C are cooled to through 1.9s, cross directional stretch 3.5 times is carried out again at 115 DEG C, film through biaxial tension enters electric heating passage heat set zone, wherein the firstth district is 228 DEG C, secondth district is 232 DEG C, 3rd district is 232 DEG C, 4th district is 232 DEG C, 5th district is 230 DEG C, 6th district is 160 DEG C, film thermal shaping time is 65s, film through heat set zone is again through 65 DEG C, the cooling in two stages under 11s and room temperature, rolling, obtain the polyester film that crystalline rate is lower, again through optical vacuum coating machine evaporation zinc oxide, obtain 188 μm of weather-proof solar cell backboard basement membranes, the running parameter of its vacuum coating equipment is: supervisory wavelength is 530nm, and plated film vacuum degree is 1.5 × 10
-3pa, base plate heating temperature is 20 DEG C, and substrate speed is 25rpm, and the voltage of electron gun is-6kV, and the evaporation rate of zinc oxide is 6/s, the thickness of evaporation zinc oxide is 30nm.
The weather-proof solar cell backboard basement membrane that this example obtains, when 121 DEG C of thermophilic digestions make elongation at break decay to 10%, digestion time reaches 173h; Basement membrane is at 38 DEG C, and under 90%RH test environment, moisture-vapor transmission is 0.4g/m
224h; Basement membrane at UVA-340 uviol lamp through 300kwh/m
2after energy exposure, xanthochromia value Δ b is 0.7.
Embodiment 13:
Be other mylar (mass ratio PTT:PETG=1:3 of 0.70dL/g PET mylar and 100 ㎏ by the inherent viscosity of 400 ㎏, wherein PTT inherent viscosity is 0.65dL/g, PETG inherent viscosity is 0.60dL/g) at baking temperature is 160 DEG C, after dry 3h, extrude at 274 DEG C of temperature through extruder, slab is made again through 18 DEG C of cold drums, slab first carries out longitudinal stretching 3.0 times at 73 DEG C, then 16 DEG C are cooled to through 3s, cross directional stretch 3.0 times is carried out again at 120 DEG C, film through biaxial tension enters electric heating passage heat set zone, wherein the firstth district is 240 DEG C, secondth district is 230 DEG C, 3rd district is 230 DEG C, 4th district is 240 DEG C, 5th district is 225 DEG C, 6th district is 170 DEG C, film thermal shaping time is 103s, film through heat set zone is again through 67 DEG C, the cooling in two stages under 17s and room temperature, rolling, obtain the polyester film that crystalline rate is lower, again through optical vacuum coating machine steam coating silicon dioxide, obtain 300 μm of weather-proof solar cell backboard basement membranes, the running parameter of its vacuum coating equipment is: supervisory wavelength is 550nm, and plated film vacuum degree is 2.5 × 10
-3pa, base plate heating temperature is 25 DEG C, and substrate speed is 20rpm, and the voltage of electron gun is-7kV, and the evaporation rate of silicon dioxide is 5/s, the thickness of steam coating silicon dioxide is 40nm.
The weather-proof solar cell backboard basement membrane that this example obtains, when 121 DEG C of thermophilic digestions make elongation at break decay to 10%, digestion time reaches 168h; Basement membrane is at 38 DEG C, and under 90%RH test environment, moisture-vapor transmission is 0.5g/m
224h; Basement membrane is through UVA-340 ultra violet lamp 300kwh/m
2after energy, xanthochromia value Δ b is 0.4.
Embodiment 14:
Be other mylar (mass ratio PEN:CDP=3:5 of 0.76dL/g PET mylar and 100 ㎏ by the inherent viscosity of 600 ㎏, wherein PEN inherent viscosity is 0.65dL/g, CDP inherent viscosity is 0.70dL/g) at baking temperature is 165 DEG C, after dry 4h, extrude at 270 DEG C of temperature through extruder, slab is made again through 18 DEG C of cold drums, slab first carries out longitudinal stretching 3.0 times at 75 DEG C, then 15 DEG C are cooled to through 3.5s, cross directional stretch 3.0 times is carried out again at 120 DEG C, film through biaxial tension enters electric heating passage heat set zone, wherein the firstth district is 225 DEG C, secondth district is 230 DEG C, 3rd district is 230 DEG C, 4th district is 230 DEG C, 5th district is 230 DEG C, 6th district is 180 DEG C, film thermal shaping time is 120s, film through heat set zone is again through 70 DEG C, the cooling in two stages under 20s and room temperature, rolling, obtain the polyester film that crystalline rate is lower, again through optical vacuum coating machine evaporation alundum (Al2O3), obtain 350 μm of weather-proof solar cell backboard basement membranes, the running parameter of its vacuum coating equipment is: supervisory wavelength is 530nm, and plated film vacuum degree is 3 × 10
-3pa, base plate heating temperature is 28 DEG C, and substrate speed is 30rpm, and the voltage of electron gun is-8kV, and the evaporation rate of alundum (Al2O3) is 7/s, the thickness of evaporation alundum (Al2O3) is 70nm.
The weather-proof solar cell backboard basement membrane that this example obtains, when 121 DEG C of thermophilic digestions make elongation at break decay to 10%, digestion time reaches 162h; Basement membrane is at 38 DEG C, and under 90%RH test environment, moisture-vapor transmission is 0.3g/m
224h; Basement membrane is through UVA-340 ultra violet lamp 300kwh/m
2after energy, xanthochromia value Δ b is 0.9.
Embodiment 15:
Be other mylar (mass ratio PETG:PBT:PEN=6:3:1 of 0.60dL/g PET mylar and 100 ㎏ by the inherent viscosity of 300 ㎏, wherein PETG inherent viscosity is 0.68dL/g, PBT inherent viscosity is 0.78dL/g, PEN inherent viscosity is 0.50dL/g) at baking temperature is 160 DEG C, after dry 3h, extrude at 276 DEG C of temperature through extruder, slab is made again through 18 DEG C of cold drums, slab first carries out longitudinal stretching 3.1 times at 73 DEG C, then 15 DEG C are cooled to through 1.2s, cross directional stretch 3.2 times is carried out again at 120 DEG C, film through biaxial tension enters electric heating passage heat set zone, wherein the firstth district is 225 DEG C, secondth district is 233 DEG C, 3rd district is 233 DEG C, 4th district is 233 DEG C, 5th district is 230 DEG C, 6th district is 175 DEG C, film thermal shaping time is 43s, film through heat set zone is again through 65 DEG C, the cooling in two stages under 7s and room temperature, rolling, obtain the polyester film that crystalline rate is lower, again through optical vacuum coating machine evaporation zinc oxide, obtain 125 μm of weather-proof solar cell backboard basement membranes, the running parameter of its vacuum coating equipment is: supervisory wavelength is 530nm, and plated film vacuum degree is 2 × 10
-3pa, base plate heating temperature is 25 DEG C, and substrate speed is 25rpm, and the voltage of electron gun is-8kV, and the evaporation rate of zinc oxide is 8/s, the thickness of evaporation zinc oxide is 60nm.
The weather-proof solar cell backboard basement membrane that this example obtains is when 121 DEG C of thermophilic digestions make elongation at break decay to 10%, and digestion time reaches 177h; Basement membrane 38 DEG C, under 90%RH environment, moisture-vapor transmission is 0.4g/m
224h; Basement membrane is through UVA-340 ultra violet lamp 300kwh/m
2after energy, xanthochromia value Δ b is 0.8.
Embodiment 16:
Be other mylar (mass ratio PTT:PBT:PCTA=10:7:3 of 0.70dL/g PET mylar and 100 ㎏ by the inherent viscosity of 500 ㎏, wherein PTT inherent viscosity is 0.60dL/g, PBT inherent viscosity is 0.70dL/g, PCTA inherent viscosity is 0.68dL/g) at baking temperature is 160 DEG C, after dry 3h, extrude at 270 DEG C of temperature through extruder, slab is made again through 18 DEG C of cold drums, slab first carries out longitudinal stretching 3.2 times at 73 DEG C, then 15 DEG C are cooled to through 0.8s, cross directional stretch 3.4 times is carried out again at 120 DEG C, film through biaxial tension enters electric heating passage heat set zone, wherein the firstth district is 230 DEG C, secondth district is 240 DEG C, 3rd district is 240 DEG C, 4th district is 240 DEG C, 5th district is 235 DEG C, 6th district is 175 DEG C, film thermal shaping time is 26s, film through heat set zone is again through 65 DEG C, the cooling in two stages under 4.3s and room temperature, rolling, obtain the polyester film that crystalline rate is lower, again through optical vacuum coating machine evaporation alundum (Al2O3), obtain 75 μm of weather-proof solar cell backboard basement membranes, the running parameter of its vacuum coating equipment is: supervisory wavelength is 530nm, and plated film vacuum degree is 2 × 10
-3pa, base plate heating temperature is 25 DEG C, and substrate speed is 25rpm, and the voltage of electron gun is-8kV, and the evaporation rate of alundum (Al2O3) is 8/s, the thickness of evaporation alundum (Al2O3) is 60nm.
The weather-proof solar cell backboard basement membrane that this example obtains is when 121 DEG C of thermophilic digestions make elongation at break decay to 10%, and digestion time reaches 185h; Basement membrane 38 DEG C, under 90%RH environment, moisture-vapor transmission is 0.5g/m
224h; Basement membrane is through UVA-340 ultra violet lamp 300kwh/m
2after energy, xanthochromia value Δ b is 0.7.
Embodiment 17:
Be other mylar (mass ratio IPET:PTT:PEN=3:1:4 of 0.82dL/g PET mylar and 100 ㎏ by the inherent viscosity of 800 ㎏, wherein IPET inherent viscosity is 0.78dL/g, PTT inherent viscosity is 0.55dL/g, PEN inherent viscosity is 0.65dL/g) at baking temperature is 160 DEG C, after dry 3h, extrude at 285 DEG C of temperature through extruder, slab is made again through 18 DEG C of cold drums, slab first carries out longitudinal stretching 3.1 times at 73 DEG C, then 15 DEG C are cooled to through 3s, cross directional stretch 3.2 times is carried out again at 120 DEG C, film through biaxial tension enters electric heating passage heat set zone, wherein the firstth district is 228 DEG C, secondth district is 235 DEG C, 3rd district is 235 DEG C, 4th district is 235 DEG C, 5th district is 230 DEG C, 6th district is 175 DEG C, film thermal shaping time is 103s, film through heat set zone is again through 65 DEG C, the cooling in two stages under 17s and room temperature, rolling, obtain the polyester film that crystalline rate is lower, again through optical vacuum coating machine evaporation titanium dioxide, obtain 300 μm of weather-proof solar cell backboard basement membranes, the running parameter of its vacuum coating equipment is: supervisory wavelength is 540nm, and plated film vacuum degree is 1.5Pa, and base plate heating temperature is 20 DEG C, and substrate speed is 30rpm, and the voltage of electron gun is-9kV, and the evaporation rate of titanium dioxide is 8/s, the thickness of evaporation titanium dioxide is 80nm.
The weather-proof solar cell backboard basement membrane that this example obtains, when 121 DEG C of thermophilic digestions make elongation at break decay to 10%, digestion time reaches 183h; Basement membrane is at 38 DEG C, and under 90%RH test environment, moisture-vapor transmission is 0.4g/m
224h; Basement membrane is through UVA-340 ultra violet lamp 300kwh/m
2after energy, xanthochromia value Δ b is 0.8.
Embodiment 18:
Be other mylar (mass ratio PTT:PETG:CDP=1:2:1 of 0.68dL/g PET mylar and 100 ㎏ by the inherent viscosity of 600 ㎏, wherein PTT inherent viscosity is 0.75dL/g, PETG inherent viscosity is 0.75dL/g, CDP inherent viscosity is 0.80dL/g) at baking temperature is 165 DEG C, after dry 3h, extrude at 280 DEG C of temperature through extruder, slab is made again through 18 DEG C of cold drums, slab first carries out longitudinal stretching 3.2 times at 73 DEG C, then 15 DEG C are cooled to through 1.9s, cross directional stretch 3.4 times is carried out again at 120 DEG C, film through biaxial tension enters electric heating passage heat set zone, wherein the firstth district is 230 DEG C, secondth district is 235 DEG C, 3rd district is 235 DEG C, 4th district is 240 DEG C, 5th district is 225 DEG C, 6th district is 175 DEG C, film thermal shaping time is 65s, film through heat set zone is again through 65 DEG C, the cooling in two stages under 11s and room temperature, rolling, obtain the polyester film that crystalline rate is lower, again through optical vacuum coating machine evaporation zinc oxide, obtain 188 μm of weather-proof solar cell backboard basement membranes, the running parameter of its vacuum coating equipment is: supervisory wavelength is 550nm, and plated film vacuum degree is 1.5 × 10
-3pa, base plate heating temperature is 24 DEG C, and substrate speed is 25rpm, and the voltage of electron gun is-9kV, and the evaporation rate of zinc oxide is 9/s, the thickness of evaporation zinc oxide is 50nm.
The weather-proof solar cell backboard basement membrane that this example obtains, when 121 DEG C of thermophilic digestions make elongation at break decay to 10%, digestion time reaches 174h; Basement membrane is at 38 DEG C, and under 90%RH test environment, moisture-vapor transmission is 0.4g/m
224h; Basement membrane is through UVA-340 ultra violet lamp 300kwh/m
2after energy, xanthochromia value Δ b is 0.8.
Embodiment 19:
Be other mylar (mass ratio PBT:PEN:PETG=2:3:3 of 0.70dL/g PET mylar and 100 ㎏ by the inherent viscosity of 900 ㎏, wherein PBT inherent viscosity is 0.70dL/g, PEN inherent viscosity is 0.55dL/g, PETG inherent viscosity is 0.65dL/g) at baking temperature is 165 DEG C, after dry 4h, extrude at 275 DEG C of temperature through extruder, slab is made again through 18 DEG C of cold drums, slab first carries out longitudinal stretching 3.0 times at 75 DEG C, then 15 DEG C are cooled to through 2.5s, cross directional stretch 3.0 times is carried out again at 120 DEG C, film through biaxial tension enters electric heating passage heat set zone, wherein the firstth district is 240 DEG C, secondth district is 230 DEG C, 3rd district is 230 DEG C, 4th district is 240 DEG C, 5th district is 225 DEG C, 6th district is 180 DEG C, film thermal shaping time is 85s, film through heat set zone is again through 67 DEG C, the cooling in two stages under 14s and room temperature, rolling, obtain the polyester film that crystalline rate is lower, again through optical vacuum coating machine evaporation titanium dioxide, obtain 250 μm of weather-proof solar cell backboard basement membranes, the running parameter of its vacuum coating equipment is: supervisory wavelength is 540nm, and plated film vacuum degree is 3 × 10
-3pa, base plate heating temperature is 30 DEG C, and substrate speed is 30rpm, and the voltage of electron gun is-10kV, and the evaporation rate of titanium dioxide is 10/s, the thickness of evaporation titanium dioxide is 40nm.
The weather-proof solar cell backboard basement membrane that this example obtains, when 121 DEG C of thermophilic digestions make elongation at break decay to 10%, digestion time reaches 166h; Basement membrane is at 38 DEG C, and under 90%RH test environment, moisture-vapor transmission is 0.3g/m
224h; Basement membrane is through UVA-340 ultra violet lamp 300kwh/m
2after energy, xanthochromia value Δ b is 0.6.
Embodiment 20:
Be other mylar (mass ratio PEN:PCTA:CDP=1:6:3 of 0.60dL/g PET mylar and 100 ㎏ by the inherent viscosity of 700 ㎏, wherein PEN inherent viscosity is 0.50dL/g, PCTA inherent viscosity is 0.65dL/g, CDP inherent viscosity is 0.65dL/g) at baking temperature is 160 DEG C, after dry 3h, extrude at 270 DEG C of temperature through extruder, slab is made again through 18 DEG C of cold drums, slab first carries out longitudinal stretching 3.0 times at 73 DEG C, then 16 DEG C are cooled to through 3.5s, cross directional stretch 3.0 times is carried out again at 120 DEG C, film through biaxial tension enters electric heating passage heat set zone, wherein the firstth district is 240 DEG C, secondth district is 230 DEG C, 3rd district is 240 DEG C, 4th district is 235 DEG C, 5th district is 225 DEG C, 6th district is 180 DEG C, film thermal shaping time is 120s, film through heat set zone is again through 70 DEG C, the cooling in two stages under 20s and room temperature, rolling, obtain the polyester film that crystalline rate is lower, again through optical vacuum coating machine evaporation alundum (Al2O3), obtain 350 μm of weather-proof solar cell backboard basement membranes, the running parameter of its vacuum coating equipment is: supervisory wavelength is 550nm, and plated film vacuum degree is 2 × 10
-3pa, base plate heating temperature is 20 DEG C, and substrate speed is 20rpm, and the voltage of electron gun is-6kV, and the evaporation rate of alundum (Al2O3) is 6/s, the thickness of evaporation alundum (Al2O3) is 90nm.
The weather-proof solar cell backboard basement membrane that this example obtains, when 121 DEG C of thermophilic digestions make elongation at break decay to 10%, digestion time reaches 150h; Basement membrane is at 38 DEG C, and under 90%RH test environment, moisture-vapor transmission is 0.1g/m
224h; Basement membrane is through UVA-340 ultra violet lamp 300kwh/m
2after energy, xanthochromia value Δ b is 0.9.
Embodiment 21:
Be other mylar (mass ratio IPET:PETG:PCTA=1:4:2 of 0.78dL/g PET mylar and 100 ㎏ by the inherent viscosity of 400 ㎏, wherein IPET inherent viscosity is 0.76dL/g, PETG inherent viscosity is 0.78dL/g, PCTA inherent viscosity is 0.75dL/g) at baking temperature is 165 DEG C, after dry 3h, extrude at 285 DEG C of temperature through extruder, slab is made again through 20 DEG C of cold drums, slab first carries out longitudinal stretching 3.5 times at 76 DEG C, then 16 DEG C are cooled to through 2.8s, cross directional stretch 3.5 times is carried out again at 130 DEG C, film through biaxial tension enters electric heating passage heat set zone, wherein the firstth district is 230 DEG C, secondth district is 235 DEG C, 3rd district is 240 DEG C, 4th district is 235 DEG C, 5th district is 230 DEG C, 6th district is 165 DEG C, film thermal shaping time is 94s, film through heat set zone is again through 64 DEG C, the cooling in two stages under 16s and room temperature, rolling, obtain the polyester film that crystalline rate is lower, again through optical vacuum coating machine steam coating silicon dioxide, obtain 275 μm of weather-proof solar cell backboard basement membranes, the running parameter of its vacuum coating equipment is: supervisory wavelength is 520nm, and plated film vacuum degree is 1 × 10
-3pa, base plate heating temperature is 26 DEG C, and substrate speed is 20rpm, and the voltage of electron gun is-7kV, and the evaporation rate of silicon dioxide is 5/s, the thickness of steam coating silicon dioxide is 80nm.
The weather-proof solar cell backboard basement membrane that this example obtains, when 121 DEG C of thermophilic digestions make elongation at break decay to 10%, digestion time reaches 203h; Basement membrane is at 38 DEG C, and under 90%RH test environment, moisture-vapor transmission is 0.5g/m
224h; Basement membrane is through UVA-340 ultra violet lamp 300kwh/m
2after energy, xanthochromia value Δ b is 0.5.
Embodiment 22:
A kind of weather-proof solar cell backboard basement membrane, this weather-proof solar cell backboard basement membrane by PET mylar and other mylar blended after through the obtained polyester film of biaxial tension, and again on polyester film (employing art methods) evaporation thickness be the oxide composition of 30nm;
Described weather-proof solar cell backboard basement membrane thickness is 50 μm;
In described polyester film, the mass ratio of material is PET mylar: other mylar=3:1;
The inherent viscosity of described PET mylar is 0.60dL/g;
Other mylar described is: by polyethylene glycol, propylene glycol, butanediol, 1, the two hydroxyl ethyl ester-5-benzene sulfonic acid sodium salt, 1 of 3-dioctyl phthalate, one or more and M-phthalic acid, terephthalic acid (TPA), 1 in 4-cyclohexanedimethanol, (any one) all polyester or copolyesters that one or more (employing art methods) in 4-cyclohexane cyclohexanedimethanodibasic, NDA are polymerized and are formed;
The inherent viscosity of other mylar described is 0.50dL/g;
Described oxide is any one in silicon dioxide, titanium dioxide, alundum (Al2O3), zinc oxide.
Embodiment 23:
A kind of weather-proof solar cell backboard basement membrane, this weather-proof solar cell backboard basement membrane by PET mylar and other mylar blended after through the obtained polyester film of biaxial tension, and again on polyester film (employing art methods) evaporation thickness be the oxide composition of 90nm;
Described weather-proof solar cell backboard basement membrane thickness is 350 μm;
In described polyester film, the mass ratio of material is PET mylar: other mylar=9:1;
The inherent viscosity of described PET mylar is 0.85dL/g;
Other mylar described is: by polyethylene glycol, propylene glycol, butanediol, 1, the two hydroxyl ethyl ester-5-benzene sulfonic acid sodium salt, 1 of 3-dioctyl phthalate, one or more and M-phthalic acid, terephthalic acid (TPA), 1 in 4-cyclohexanedimethanol, (any one) all polyester or copolyesters that one or more (employing art methods) in 4-cyclohexane cyclohexanedimethanodibasic, NDA are polymerized and are formed;
The inherent viscosity of other mylar described is 0.80dL/g;
Described oxide is any one in silicon dioxide, titanium dioxide, alundum (Al2O3), zinc oxide.
Embodiment 24:
A kind of weather-proof solar cell backboard basement membrane, this weather-proof solar cell backboard basement membrane by PET mylar and other mylar blended after through the obtained polyester film of biaxial tension, and again on polyester film (employing art methods) evaporation thickness be the oxide composition of 60nm;
Described weather-proof solar cell backboard basement membrane thickness is 200 μm;
In described polyester film, the mass ratio of material is PET mylar: other mylar=6:1;
The inherent viscosity of described PET mylar is 0.70dL/g;
Other mylar described is: by polyethylene glycol, propylene glycol, butanediol, 1, the two hydroxyl ethyl ester-5-benzene sulfonic acid sodium salt, 1 of 3-dioctyl phthalate, one or more and M-phthalic acid, terephthalic acid (TPA), 1 in 4-cyclohexanedimethanol, (any one) all polyester or copolyesters that one or more (employing art methods) in 4-cyclohexane cyclohexanedimethanodibasic, NDA are polymerized and are formed;
The inherent viscosity of other mylar described is 0.70dL/g;
Described oxide is any one in silicon dioxide, titanium dioxide, alundum (Al2O3), zinc oxide.
Embodiment 25 ~ 31:
A kind of weather-proof solar cell backboard basement membrane, this weather-proof solar cell backboard basement membrane by PET mylar and other mylar blended after through the obtained polyester film of biaxial tension, and again on polyester film (employing art methods) evaporation thickness be that in 30nm ~ 90nm(embodiment 25 ~ 31, evaporation thickness is followed successively by 38nm, 46nm, 54nm, 62nm, 70nm, 78nm, 86nm) oxide composition;
Described weather-proof solar cell backboard basement membrane thickness is 50 μm ~ 350 μm (in embodiment 25 ~ 31, thickness is followed successively by 90 μm, 130 μm, 170 μm, 210 μm, 250 μm, 280 μm, 320 μm);
In described polyester film, the mass ratio of material is PET mylar: in other mylar=3 ~ 9:1(embodiment 25 ~ 31, ratio is followed successively by 3:1,4:1,5:1,6:1,7:1,8:1,9:1);
The inherent viscosity of described PET mylar is arbitrary in 0.60dL/g ~ 0.85dL/g;
Other mylar described is: by polyethylene glycol, propylene glycol, butanediol, 1, the two hydroxyl ethyl ester-5-benzene sulfonic acid sodium salt, 1 of 3-dioctyl phthalate, one or more and M-phthalic acid, terephthalic acid (TPA), 1 in 4-cyclohexanedimethanol, (any one) all polyester or copolyesters that one or more (employing art methods) in 4-cyclohexane cyclohexanedimethanodibasic, NDA are polymerized and are formed;
The inherent viscosity of other mylar described is arbitrary in 0.50dL/g ~ 0.80dL/g;
Described oxide is any one in silicon dioxide, titanium dioxide, alundum (Al2O3), zinc oxide.
Embodiment 31:
A kind of weather-proof solar cell backboard basement membrane, other mylar described replaces with: by ethylene glycol and M-phthalic acid, 1, (any one) all polyester or copolyesters that one or more (employing art methods) in 4-cyclohexane cyclohexanedimethanodibasic, NDA are polymerized and are formed.Arbitrary in the other the same as in Example 22 ~ 30, omit.
Embodiment 33:
A kind of weather-proof solar cell backboard basement membrane, other mylar described replaces with: by polyethylene glycol, propylene glycol, butanediol, 1, the two hydroxyl ethyl ester-5-benzene sulfonic acid sodium salt of 3-dioctyl phthalate, 1, one or more and M-phthalic acid in 4-cyclohexanedimethanol, terephthalic acid (TPA), 1, 4-cyclohexane cyclohexanedimethanodibasic, 2, the equal polyester that one or more (employing art methods) in 6-naphthalenedicarboxylic acid are polymerized and are formed or copolyesters, and by ethylene glycol and M-phthalic acid, 1, 4-cyclohexane cyclohexanedimethanodibasic, 2, in 6-naphthalenedicarboxylic acid one or more (employing art methods) polymerization and formed equal polyester or copolyesters in, any two or three kinds of mixing compositions in all equal polyester or copolyesters.Arbitrary in the other the same as in Example 22 ~ 30, omit.
Weather-proof solar cell backboard basement membrane described in embodiment 22 ~ 33 is when 121 DEG C of thermophilic digestions make elongation at break decay to 10%, and digestion time is 150h ~ 203h; Described weather-proof solar cell backboard basement membrane is 38 DEG C, 90%RH(RH and relative humidity) under test environment, moisture-vapor transmission is 0.1 ~ 0.5g/m
224h; Described weather-proof solar cell backboard basement membrane at UVA-340 uviol lamp through 300kwh/m
2after energy exposure, xanthochromia value Δ b is 0.3 ~ 1.
Embodiment 34:
A preparation method for weather-proof solar cell backboard basement membrane, step is:
A, prepare polyester film:
By the PET mylar of 6 mass parts and other mylar of 1 mass parts at baking temperature is 160 DEG C, after dry 3h, extrude at 275 DEG C of temperature through extruder, slab is made again through 18 DEG C of cold drums, slab first carries out longitudinal stretching 3 times at 75 DEG C, then temperature 18 DEG C is cooled to through 3s, cross directional stretch 3 times is carried out again at 120 DEG C, film through biaxial tension enters electric heating passage heat set zone, wherein: first district's temperature is 232 DEG C, secondth district is 232 DEG C, 3rd district is 232 DEG C, 4th district is 232 DEG C, 5th district is 232 DEG C, 6th district is 170 DEG C, film thermal shaping time is 60s, film through heat set zone is again through 65 DEG C, the cooling in two stages under 10s and room temperature, rolling, namely (crystalline rate is lower) polyester film is obtained,
The inherent viscosity of described PET mylar is 0.72dL/g;
Other mylar described is: by polyethylene glycol, propylene glycol, butanediol, 1, the two hydroxyl ethyl ester-5-benzene sulfonic acid sodium salt, 1 of 3-dioctyl phthalate, one or more and M-phthalic acid, terephthalic acid (TPA), 1 in 4-cyclohexanedimethanol, (any one) all polyester or copolyesters that one or more (employing art methods) in 4-cyclohexane cyclohexanedimethanodibasic, NDA are polymerized and are formed;
The inherent viscosity of other mylar described is 0.65dL/g;
B, prepare weather-proof solar cell backboard basement membrane:
(crystalline rate is lower) polyester film that step a is obtained, by adopting vacuum coating (existing) technology of optical vacuum coating machine evaporation oxidation thing, by oxide evaporation on polyester film, obtained evaporation has oxide, thickness to be the weather-proof solar cell backboard basement membrane of 200 μm; The running parameter of described vacuum coating equipment is: supervisory wavelength is 520nm ~ 550nm, and plated film vacuum degree is 1 × 10
-3pa ~ 3 × 10
-3pa, base plate heating temperature is 20 DEG C ~ 30 DEG C, and substrate speed is 20rpm ~ 30rpm, and the voltage of electron gun is-6kV ~-10kV, and the evaporation rate of oxide is 5/s ~ 10/s; In described weather-proof solar cell backboard basement membrane, the thickness of evaporation oxide is 60nm;
Described oxide is any one in silicon dioxide, titanium dioxide, alundum (Al2O3), zinc oxide.
Embodiment 35:
A preparation method for weather-proof solar cell backboard basement membrane, step is:
A, prepare polyester film:
By the PET mylar of 3 mass parts and other mylar of 1 mass parts at baking temperature is 150 DEG C, after dry 4h, extrude at 265 DEG C of temperature through extruder, slab is made again through 15 DEG C of cold drums, slab first carries out longitudinal stretching 2.5 times at 70 DEG C, then temperature 20 DEG C is cooled to through 1s, cross directional stretch 2.5 times is carried out again at 110 DEG C, film through biaxial tension enters electric heating passage heat set zone, wherein: first district's temperature is 225 DEG C, secondth district is 225 DEG C, 3rd district is 225 DEG C, 4th district is 225 DEG C, 5th district is 225 DEG C, 6th district is 160 DEG C, film thermal shaping time is 8s, film through heat set zone is again through 60 DEG C, the cooling in two stages under 20s and room temperature, rolling, namely (crystalline rate is lower) polyester film is obtained,
The inherent viscosity of described PET mylar is 0.60dL/g;
Other mylar described is: by polyethylene glycol, propylene glycol, butanediol, 1, the two hydroxyl ethyl ester-5-benzene sulfonic acid sodium salt, 1 of 3-dioctyl phthalate, one or more and M-phthalic acid, terephthalic acid (TPA), 1 in 4-cyclohexanedimethanol, (any one) all polyester or copolyesters that one or more (employing art methods) in 4-cyclohexane cyclohexanedimethanodibasic, NDA are polymerized and are formed;
The inherent viscosity of other mylar described is 0.50dL/g;
B, prepare weather-proof solar cell backboard basement membrane:
(crystalline rate is lower) polyester film that step a is obtained, by adopting vacuum coating (existing) technology of optical vacuum coating machine evaporation oxidation thing, by oxide evaporation on polyester film, obtained evaporation has oxide, thickness to be the weather-proof solar cell backboard basement membrane of 50 μm; The running parameter of described vacuum coating equipment is: supervisory wavelength is 520nm ~ 550nm, and plated film vacuum degree is 1 × 10
-3pa ~ 3 × 10
-3pa, base plate heating temperature is 20 DEG C ~ 30 DEG C, and substrate speed is 20rpm ~ 30rpm, and the voltage of electron gun is-6kV ~-10kV, and the evaporation rate of oxide is 5/s ~ 10/s; In described weather-proof solar cell backboard basement membrane, the thickness of evaporation oxide is 30nm;
Described oxide is any one in silicon dioxide, titanium dioxide, alundum (Al2O3), zinc oxide.
Embodiment 36:
A preparation method for weather-proof solar cell backboard basement membrane, step is:
A, prepare polyester film:
By the PET mylar of 9 mass parts and other mylar of 1 mass parts at baking temperature is 170 DEG C, after dry 2h, extrude at 285 DEG C of temperature through extruder, slab is made again through 20 DEG C of cold drums, slab first carries out longitudinal stretching 3.5 times at 80 DEG C, then temperature 15 DEG C is cooled to through 5s, cross directional stretch 3.5 times is carried out again at 130 DEG C, film through biaxial tension enters electric heating passage heat set zone, wherein: first district's temperature is 240 DEG C, secondth district is 240 DEG C, 3rd district is 240 DEG C, 4th district is 240 DEG C, 5th district is 240 DEG C, 6th district is 180 DEG C, film thermal shaping time is 120s, film through heat set zone is again through 70 DEG C, the cooling in two stages under 1s and room temperature, rolling, namely (crystalline rate is lower) polyester film is obtained,
The inherent viscosity of described PET mylar is 0.85dL/g;
Other mylar described is: by polyethylene glycol, propylene glycol, butanediol, 1, the two hydroxyl ethyl ester-5-benzene sulfonic acid sodium salt, 1 of 3-dioctyl phthalate, one or more and M-phthalic acid, terephthalic acid (TPA), 1 in 4-cyclohexanedimethanol, (any one) all polyester or copolyesters that one or more (employing art methods) in 4-cyclohexane cyclohexanedimethanodibasic, NDA are polymerized and are formed;
The inherent viscosity of other mylar described is 0.80dL/g;
B, prepare weather-proof solar cell backboard basement membrane:
(crystalline rate is lower) polyester film that step a is obtained, by adopting vacuum coating (existing) technology of optical vacuum coating machine evaporation oxidation thing, by oxide evaporation on polyester film, obtained evaporation has oxide, thickness to be the weather-proof solar cell backboard basement membrane of 350 μm; The running parameter of described vacuum coating equipment is: supervisory wavelength is 520nm ~ 550nm, and plated film vacuum degree is 1 × 10
-3pa ~ 3 × 10
-3pa, base plate heating temperature is 20 DEG C ~ 30 DEG C, and substrate speed is 20rpm ~ 30rpm, and the voltage of electron gun is-6kV ~-10kV, and the evaporation rate of oxide is 5/s ~ 10/s; In described weather-proof solar cell backboard basement membrane, the thickness of evaporation oxide is 90nm;
Described oxide is any one in silicon dioxide, titanium dioxide, alundum (Al2O3), zinc oxide.
Embodiment 37 ~ 43:
A preparation method for weather-proof solar cell backboard basement membrane, step is:
A, prepare polyester film:
3 ~ 9 mass parts (are followed successively by 3 in embodiment 37 ~ 43, 4, 5, 6, 7, 8, 9 mass parts) PET mylar and other mylar of 1 mass parts at baking temperature is 150 DEG C ~ 170 DEG C, after dry 2h ~ 4h, extrude at 265 DEG C ~ 285 DEG C temperature through extruder, slab is made again through 15 DEG C ~ 20 DEG C cold drums, slab first carries out longitudinal stretching 2.5 ~ 3.5 times at 70 DEG C ~ 80 DEG C, then temperature 15 DEG C ~ 20 DEG C is cooled to through 1s ~ 5s, cross directional stretch 2.5 ~ 3.5 times is carried out again at 110 DEG C ~ 130 DEG C, film through biaxial tension enters electric heating passage heat set zone, wherein: first district's temperature is 225 DEG C ~ 240 DEG C, secondth district is 225 DEG C ~ 240 DEG C, 3rd district is 225 DEG C ~ 240 DEG C, 4th district is 225 DEG C ~ 240 DEG C, 5th district is 225 DEG C ~ 240 DEG C, 6th district is 160 DEG C ~ 180 DEG C, and film thermal shaping time is 8s ~ 120s, and the film through heat set zone is again through 60 DEG C ~ 70 DEG C, the cooling in two stages under 1s ~ 20s and room temperature, rolling, namely obtains (crystalline rate is lower) polyester film,
The inherent viscosity of described PET mylar is 0.60dL/g ~ 0.85dL/g;
Other mylar described is: by polyethylene glycol, propylene glycol, butanediol, 1, the two hydroxyl ethyl ester-5-benzene sulfonic acid sodium salt, 1 of 3-dioctyl phthalate, one or more and M-phthalic acid, terephthalic acid (TPA), 1 in 4-cyclohexanedimethanol, (any one) all polyester or copolyesters that one or more (employing art methods) in 4-cyclohexane cyclohexanedimethanodibasic, NDA are polymerized and are formed;
The inherent viscosity of other mylar described is 0.50dL/g ~ 0.80dL/g;
B, prepare weather-proof solar cell backboard basement membrane:
(crystalline rate is lower) polyester film that step a is obtained, by adopting vacuum coating (existing) technology of optical vacuum coating machine evaporation oxidation thing, by oxide evaporation on polyester film, obtained evaporation has oxide, thickness to be the weather-proof solar cell backboard basement membrane of 50 μm ~ 350 μm (in embodiment 37 ~ 43, thickness is followed successively by 90 μm, 130 μm, 170 μm, 210 μm, 250 μm, 280 μm, 320 μm); The running parameter of described vacuum coating equipment is: supervisory wavelength is 520nm ~ 550nm, and plated film vacuum degree is 1 × 10
-3pa ~ 3 × 10
-3pa, base plate heating temperature is 20 DEG C ~ 30 DEG C, and substrate speed is 20rpm ~ 30rpm, and the voltage of electron gun is-6kV ~-10kV, and the evaporation rate of oxide is 5/s ~ 10/s; In described weather-proof solar cell backboard basement membrane, the thickness of evaporation oxide is that in 30nm ~ 90nm(embodiment 37 ~ 43, thickness is followed successively by 38nm, 46nm, 54nm, 62nm, 70nm, 78nm, 86nm);
Described oxide is any one in silicon dioxide, titanium dioxide, alundum (Al2O3), zinc oxide.
Embodiment 44:
A kind of preparation method of weather-proof solar cell backboard basement membrane, described in step a, other mylar replaces with: by ethylene glycol and M-phthalic acid, 1, (any one) all polyester or copolyesters that one or more (employing art methods) in 4-cyclohexane cyclohexanedimethanodibasic, NDA are polymerized and are formed.Arbitrary in the other the same as in Example 34 ~ 43, omit.
Embodiment 45:
A kind of preparation method of weather-proof solar cell backboard basement membrane, described in step a, other mylar replaces with: by polyethylene glycol, propylene glycol, butanediol, 1, the two hydroxyl ethyl ester-5-benzene sulfonic acid sodium salt of 3-dioctyl phthalate, 1, one or more and M-phthalic acid in 4-cyclohexanedimethanol, terephthalic acid (TPA), 1, 4-cyclohexane cyclohexanedimethanodibasic, 2, the equal polyester that one or more (employing art methods) in 6-naphthalenedicarboxylic acid are polymerized and are formed or copolyesters, and by ethylene glycol and M-phthalic acid, 1, 4-cyclohexane cyclohexanedimethanodibasic, 2, in 6-naphthalenedicarboxylic acid one or more (employing art methods) polymerization and formed equal polyester or copolyesters in, any two or three kinds of mixing compositions in all equal polyester or copolyesters.Arbitrary in the other the same as in Example 34 ~ 43, omit.
Weather-proof solar cell backboard basement membrane obtained described in step b in embodiment 34 ~ 45 is when 121 DEG C of thermophilic digestions make elongation at break decay to 10%, and digestion time is 150h ~ 203h; Described weather-proof solar cell backboard basement membrane 38 DEG C, under 90%RH test environment, moisture-vapor transmission is 0.1 ~ 0.5g/m
224h; Described weather-proof solar cell backboard basement membrane at UVA-340 uviol lamp through 300kwh/m
2after energy exposure, xanthochromia value Δ b is 0.3 ~ 1.
In above-described embodiment: in the percentage adopted, do not indicate especially, be quality (weight) percentage; In the ratio adopted, do not indicate especially, be quality (weight) ratio; Described mass parts can be all gram or kilogram.
In above-described embodiment: the technological parameter (temperature, time, inherent viscosity, vacuum degree, voltage etc.) in each step and each amounts of components numerical value etc. are scope, and any point is all applicable.
The concrete same prior art of technology contents described in content of the present invention and above-described embodiment, described raw material are commercially available prod.
The invention is not restricted to above-described embodiment, all can implement described in content of the present invention and there is described good result.
Claims (8)
1. a weather-proof solar cell backboard basement membrane, it is characterized in that: described weather-proof solar cell backboard basement membrane by PET mylar and other mylar blended after through the obtained polyester film of biaxial tension, and again on polyester film evaporation thickness be the oxide composition of 30nm ~ 90nm;
Described weather-proof solar cell backboard basement membrane thickness is 50 μm ~ 350 μm;
In described polyester film, the mass ratio of material is PET mylar: other mylar=3 ~ 9:1;
The inherent viscosity of described PET mylar is 0.60dL/g ~ 0.85dL/g;
Other mylar described is: by polyethylene glycol, propylene glycol, butanediol, 1, the two hydroxyl ethyl ester-5-benzene sulfonic acid sodium salt, 1 of 3-dioctyl phthalate, one or more and M-phthalic acid, terephthalic acid (TPA), 1 in 4-cyclohexanedimethanol, one or more in 4-cyclohexane cyclohexanedimethanodibasic, NDA are polymerized and the equal polyester of formation or copolyesters;
The inherent viscosity of other mylar described is 0.50dL/g ~ 0.80dL/g;
Described oxide is any one in silicon dioxide, titanium dioxide, alundum (Al2O3), zinc oxide.
2., by weather-proof solar cell backboard basement membrane according to claim 1, it is characterized in that: described weather-proof solar cell backboard basement membrane is when 121 DEG C of thermophilic digestions make elongation at break decay to 10%, and digestion time is 150h ~ 203h; Described weather-proof solar cell backboard basement membrane 38 DEG C, under 90%RH test environment, moisture-vapor transmission is 0.1 ~ 0.5g/m
224h; Described weather-proof solar cell backboard basement membrane at UVA-340 uviol lamp through 300kwh/m
2after energy exposure, xanthochromia value Δ b is 0.3 ~ 1.
3. by the weather-proof solar cell backboard basement membrane described in claim 1 or 2, it is characterized in that: other mylar described replaces with: by ethylene glycol and M-phthalic acid, 1, one or more in 4-cyclohexane cyclohexanedimethanodibasic, NDA are polymerized and the equal polyester of formation or copolyesters.
4. by the weather-proof solar cell backboard basement membrane described in claim 1 or 2, it is characterized in that: other mylar described replaces with: by polyethylene glycol, propylene glycol, butanediol, 1, the two hydroxyl ethyl ester-5-benzene sulfonic acid sodium salt of 3-dioctyl phthalate, 1, one or more and M-phthalic acid in 4-cyclohexanedimethanol, terephthalic acid (TPA), 1, 4-cyclohexane cyclohexanedimethanodibasic, 2, one or more in 6-naphthalenedicarboxylic acid are polymerized and the equal polyester of formation or copolyesters, and by ethylene glycol and M-phthalic acid, 1, 4-cyclohexane cyclohexanedimethanodibasic, 2, in 6-naphthalenedicarboxylic acid one or more polymerization and formed equal polyester or copolyesters in, any two or three kinds of mixing compositions in all equal polyester or copolyesters.
5. a preparation method for weather-proof solar cell backboard basement membrane, is characterized in that step is:
A, prepare polyester film:
By the PET mylar of 3 ~ 9 mass parts and other mylar of 1 mass parts at baking temperature is 150 DEG C ~ 170 DEG C, after dry 2h ~ 4h, extrude at 265 DEG C ~ 285 DEG C temperature through extruder, slab is made again through 15 DEG C ~ 20 DEG C cold drums, slab first carries out longitudinal stretching 2.5 ~ 3.5 times at 70 DEG C ~ 80 DEG C, then temperature 15 DEG C ~ 20 DEG C is cooled to through 1s ~ 5s, cross directional stretch 2.5 ~ 3.5 times is carried out again at 110 DEG C ~ 130 DEG C, film through biaxial tension enters electric heating passage heat set zone, wherein: first district's temperature is 225 DEG C ~ 240 DEG C, secondth district is 225 DEG C ~ 240 DEG C, 3rd district is 225 DEG C ~ 240 DEG C, 4th district is 225 DEG C ~ 240 DEG C, 5th district is 225 DEG C ~ 240 DEG C, 6th district is 160 DEG C ~ 180 DEG C, film thermal shaping time is 8s ~ 120s, film through heat set zone is again through 60 DEG C ~ 70 DEG C, the cooling in two stages under 1s ~ 20s and room temperature, rolling, namely polyester film is obtained,
The inherent viscosity of described PET mylar is 0.60dL/g ~ 0.85dL/g;
Other mylar described is: by polyethylene glycol, propylene glycol, butanediol, 1, the two hydroxyl ethyl ester-5-benzene sulfonic acid sodium salt, 1 of 3-dioctyl phthalate, one or more and M-phthalic acid, terephthalic acid (TPA), 1 in 4-cyclohexanedimethanol, one or more in 4-cyclohexane cyclohexanedimethanodibasic, NDA are polymerized and the equal polyester of formation or copolyesters;
The inherent viscosity of other mylar described is 0.50dL/g ~ 0.80dL/g;
B, prepare weather-proof solar cell backboard basement membrane:
The polyester film that step a is obtained, by adopting the vacuum coating technology of optical vacuum coating machine evaporation oxidation thing, by oxide evaporation on polyester film, obtained evaporation has oxide, thickness to be the weather-proof solar cell backboard basement membrane of 50 μm ~ 350 μm; The running parameter of described vacuum coating equipment is: supervisory wavelength is 520nm ~ 550nm, and plated film vacuum degree is 1 × 10
-3pa ~ 3 × 10
-3pa, base plate heating temperature is 20 DEG C ~ 30 DEG C, and substrate speed is 20rpm ~ 30rpm, and the voltage of electron gun is-6kV ~-10kV, and the evaporation rate of oxide is 5/s ~ 10/s; In described weather-proof solar cell backboard basement membrane, the thickness of evaporation oxide is 30nm ~ 90nm;
Described oxide is any one in silicon dioxide, titanium dioxide, alundum (Al2O3), zinc oxide.
6. by the preparation method of weather-proof solar cell backboard basement membrane described in claim 5, it is characterized in that: weather-proof solar cell backboard basement membrane obtained described in step b is when 121 DEG C of thermophilic digestions make elongation at break decay to 10%, and digestion time is 150h ~ 203h; Described weather-proof solar cell backboard basement membrane 38 DEG C, under 90%RH test environment, moisture-vapor transmission is 0.1 ~ 0.5g/m
224h; Described weather-proof solar cell backboard basement membrane at UVA-340 uviol lamp through 300kwh/m
2after energy exposure, xanthochromia value Δ b is 0.3 ~ 1.
7. by the preparation method of weather-proof solar cell backboard basement membrane described in claim 5 or 6, it is characterized in that: described in step a, other mylar replaces with: by ethylene glycol and M-phthalic acid, 1, one or more in 4-cyclohexane cyclohexanedimethanodibasic, NDA are polymerized and the equal polyester of formation or copolyesters.
8. by the preparation method of weather-proof solar cell backboard basement membrane described in claim 5 or 6, it is characterized in that: described in step a, other mylar replaces with: by polyethylene glycol, propylene glycol, butanediol, 1, the two hydroxyl ethyl ester-5-benzene sulfonic acid sodium salt of 3-dioctyl phthalate, 1, one or more and M-phthalic acid in 4-cyclohexanedimethanol, terephthalic acid (TPA), 1, 4-cyclohexane cyclohexanedimethanodibasic, 2, one or more in 6-naphthalenedicarboxylic acid are polymerized and the equal polyester of formation or copolyesters, and by ethylene glycol and M-phthalic acid, 1, 4-cyclohexane cyclohexanedimethanodibasic, 2, in 6-naphthalenedicarboxylic acid one or more polymerization and formed equal polyester or copolyesters in, any two or three kinds of mixing compositions in all equal polyester or copolyesters.
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Cited By (4)
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| CN106374003A (en) * | 2016-11-04 | 2017-02-01 | 秦皇岛博硕光电设备股份有限公司 | Solar cell component and backboard used by same |
| CN109326666A (en) * | 2017-07-28 | 2019-02-12 | 苏州赛伍应用技术股份有限公司 | Inexpensive weathering type solar cell backboard major insulation functional membrane and backboard and solar cell module containing the major insulation functional membrane |
| CN111446318A (en) * | 2020-03-30 | 2020-07-24 | 四川东方绝缘材料股份有限公司 | Weather-proof solar cell backboard base film and preparation method thereof |
| CN113276512A (en) * | 2020-02-19 | 2021-08-20 | 南亚塑胶工业股份有限公司 | Recyclable cooking bag and recyclable cooking polyester film thereof |
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| CN102529258A (en) * | 2010-10-20 | 2012-07-04 | 苏州尚善新材料科技有限公司 | Improved solar cell assembly back plate and manufacturing method thereof |
| CN102569451A (en) * | 2010-10-20 | 2012-07-11 | 苏州尚善新材料科技有限公司 | Solar module back veneer comprising non-solvent bonding layers and manufacturing method thereof |
| CN103738026A (en) * | 2013-12-27 | 2014-04-23 | 四川东方绝缘材料股份有限公司 | Low-water-vapor-transmittance polyester film with polyurethane coatings and preparation method of polyester film |
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| CN102529258A (en) * | 2010-10-20 | 2012-07-04 | 苏州尚善新材料科技有限公司 | Improved solar cell assembly back plate and manufacturing method thereof |
| CN102569451A (en) * | 2010-10-20 | 2012-07-11 | 苏州尚善新材料科技有限公司 | Solar module back veneer comprising non-solvent bonding layers and manufacturing method thereof |
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| CN106374003A (en) * | 2016-11-04 | 2017-02-01 | 秦皇岛博硕光电设备股份有限公司 | Solar cell component and backboard used by same |
| CN109326666A (en) * | 2017-07-28 | 2019-02-12 | 苏州赛伍应用技术股份有限公司 | Inexpensive weathering type solar cell backboard major insulation functional membrane and backboard and solar cell module containing the major insulation functional membrane |
| CN113276512A (en) * | 2020-02-19 | 2021-08-20 | 南亚塑胶工业股份有限公司 | Recyclable cooking bag and recyclable cooking polyester film thereof |
| CN111446318A (en) * | 2020-03-30 | 2020-07-24 | 四川东方绝缘材料股份有限公司 | Weather-proof solar cell backboard base film and preparation method thereof |
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