CN102110728A - Backing film of solar battery and preparation method thereof - Google Patents
Backing film of solar battery and preparation method thereof Download PDFInfo
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- CN102110728A CN102110728A CN2010105546377A CN201010554637A CN102110728A CN 102110728 A CN102110728 A CN 102110728A CN 2010105546377 A CN2010105546377 A CN 2010105546377A CN 201010554637 A CN201010554637 A CN 201010554637A CN 102110728 A CN102110728 A CN 102110728A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- 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
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Abstract
The invention provides a backing film of a solar battery and a preparation method thereof. The invention aims to solves the problem that the back film of the solar battery in the prior art has complex process and high cost. The backing film of the solar battery comprises a substrate and a weather resistant layer applied on the surface of the substrate, wherein the composition of the weather resistant layer comprises the following components in parts by weight: 4-50 parts of polyester polyol, 0.2-10 parts of isocyanate, 0.1-5 parts of inorganic nanoparticles and 30-70 parts of solvent. The backing film of the solar battery provided by the invention is prepared by coating the surface of the substrate with the weather resistant layer, and has the advantages of simple preparation process, low cost and good properties.
Description
Technical field
The present invention relates to solar cell, be specifically related to a kind of solar battery back film and preparation method thereof.
Background technology
Notacoria is the important component part that constitutes solar module; it mainly plays a part insulation and intercepts aqueous vapor in whole solar cell; therefore need possess aqueous vapor barrier and insulating properties preferably; these performances mainly are to reach by the base material in the notacoria; but because base material in use; especially out of doors in the use; the erosion that is subjected to ultraviolet ray etc. easily causes aging; so need to adopt material to protect base material, thereby form solar battery back film with weatherability.In the prior art, adopt fluoropolymer, then with its coating or be adhered on the base material, to constitute solar battery back film as weathering layer more.But adopt fluoropolymer to have following shortcoming: one, to adopt fluoropolymer as weathering layer, processing difficulties, complex manufacturing as weathering layer; Two, the fluoropolymer price is higher, is unfavorable for reducing cost; Three, the compatibility of fluoropolymer and solvent and other compositions is relatively poor, and sedimentation takes place easily in being prepared into the process of coating, thereby causes problem such as crawling, is unfavorable for that coating produces; Four, fluoropolymer has good chemical inertness, and wetability is relatively poor, makes the tack of weathering layer and base material relatively poor, comes off easily in the use; Five, the pliability of fluoropolymer is relatively poor, because solar battery back film is with the form rolling of coiled material, so the relatively poor pliability of fluoropolymer causes notacoria problems of crack to occur easily after making.
Therefore, how to provide that a kind of manufacture craft is simple, cost is lower and the solar battery back film of function admirable becomes the problem that this area needs to be resolved hurrily.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of solar battery back film and preparation method thereof, and it adopts coating process to make, and manufacture craft is simple, cost is lower and function admirable.
In order to achieve the above object, the invention provides a kind of solar battery back film, this notacoria comprises base material,
The surface coated of this base material has weathering layer, this weathering layer composed as follows:
PEPA 4-50 weight portion
Isocyanates 0.2-10 weight portion
Inorganic nano-particle 0.1-5 weight portion
Solvent 30-70 weight portion.
Further, aforesaid solar battery back film, wherein, described weathering layer composed as follows:
PEPA 15-40 weight portion
Isocyanates 1.5-5 weight portion
Inorganic nano-particle 0.5-3 weight portion
Solvent 40-55 weight portion.
Aforesaid solar battery back film, wherein, described PEPA is polyethylene glycol adipate glycol (PEA), poly-adipate glycol-propylene glycol ester glycol, poly-adipic acid diglycol esterdiol (PDA), poly-adipate glycol-diglycol esterdiol, poly-adipic acid-1,4-butanediol ester glycol (PBA), poly-adipate glycol-1,4-butanediol ester glycol, poly-adipic acid neopentyl glycol-1, a kind of in the 6-hexylene glycol esterdiol or at least two kinds mixture wherein;
Described isocyanates is 1, a kind of in hexamethylene-diisocyanate (HDI), IPDI (IPDI), XDI (XDI), Methylcyclohexyl diisocyanate (HTDI), the dicyclohexyl methyl hydride diisocyanate (HMDI) or at least two kinds mixture wherein;
Described inorganic nano-particle is a kind of in nano titanium oxide, nano silicon, nanometer titanium dioxide zinc, nano-calcium carbonate magnesium calcium, nano zirconium dioxide, nano aluminium oxide, nano oxidized barium, nanometer sodium fluoride, nanometer cesium fluoride, nanometer lanthanum fluoride, nano-calcium carbonate, the nano barium sulfate or at least two kinds mixture wherein.
Aforesaid solar battery back film, wherein, described base material is polytrifluorochloroethylene (PCTFE), PETG (PET), Merlon (PC), polybutylene terephthalate (PBT) (PBT) or PEN (PEN), this substrate surface has the above surface tension of 40dyn/cm, and the thermal coefficient of expansion of this base material is 2.0 * 10
-5/ K～10.0 * 10
-5/ K.
Aforesaid solar battery back film, wherein, described weathering layer thickness is 0.05～0.25 times of described base material thickness.
Further, aforesaid solar battery back film, wherein, described weathering layer thickness is preferably 0.1～0.2 times of described base material thickness.
Aforesaid solar battery back film, wherein, described base material single or double is coated with weathering layer.
The present invention also provides a kind of preparation method of aforesaid solar battery back film, is specially at the described weathering layer of the surface coated of described base material, and weathering layer obtains solar battery back film after solidifying.
Compared with prior art, solar battery back film of the present invention mainly contains following advantage: one, the present invention constitutes solar battery back film at the weathering layer of compositions such as substrate surface coated polyester polyalcohol, isocyanates, compare with the solar battery back film that the available technology adopting fluoropolymer is made as weathering layer, manufacture craft is simple, and cost is lower; Two, weathering layer composition of the present invention has compatibility preferably, more helps coating and produces; Three, urethane resin layer and the substrate surface that generates behind PEPA in the weathering layer of the present invention and the isocyanate reaction has tack preferably, and can avoiding in use, weathering layer comes off; Four, the urethane resin layer that generates behind PEPA in the weathering layer of the present invention and the isocyanate reaction has pliability preferably, helps avoiding notacoria problems of crack to occur in the coiled material wrapup procedure.
Description of drawings
Fig. 1 is the schematic diagram of the solar battery back film of one embodiment of the present of invention;
Fig. 2 is the schematic diagram of the solar battery back film of an alternative embodiment of the invention.
Description of reference numerals
1,2 solar battery back films
11,21 base materials
12,22 weathering layers
Embodiment
Solar battery back film of the present invention is made up of base material and weathering layer, and wherein this weathering layer is composed as follows:
PEPA 4-50 weight portion
Isocyanates 0.2-10 weight portion
Inorganic nano-particle 0.1-5 weight portion
Solvent 30-70 weight portion
Further, preferred weathering layer is composed as follows:
PEPA 15-40 weight portion
Isocyanates 1.5-5 weight portion
Inorganic nano-particle 0.5-3 weight portion
Solvent 40-55 weight portion
Generate urethane resin layer behind PEPA in the weathering layer of the present invention and the isocyanate reaction, help protecting base material avoid the external world such as ultraviolet ray corrode cause aging, thereby help the effect that solar battery back film is brought into play its weatherability; Urethane resin layer of Sheng Chenging and base material have tack preferably simultaneously; And better with the compatibility of solvent, help coating and produce; In addition, the urethane resin layer of generation has pliability preferably, helps avoiding notacoria problems of crack to occur in the coiled material wrapup procedure.
PEPA in the weathering layer of the present invention can be polyethylene glycol adipate glycol (PEA), poly-adipate glycol-propylene glycol ester glycol, poly-adipic acid diglycol esterdiol (PDA), poly-adipate glycol-diglycol esterdiol, poly-adipic acid-1,4-butanediol ester glycol (PBA), poly-adipate glycol-1,4-butanediol ester glycol, poly-adipic acid neopentyl glycol-1, a kind of in the 6-hexylene glycol esterdiol etc. or at least two kinds mixture wherein;
Isocyanates in the weathering layer of the present invention can be 1, a kind of in hexamethylene-diisocyanate (HDI), IPDI (IPDI), XDI (XDI), Methylcyclohexyl diisocyanate (HTDI), the dicyclohexyl methyl hydride diisocyanate (HMDI) etc. or at least two kinds mixture wherein.
Inorganic nano-particle in the weathering layer of the present invention can be nano titanium oxide, nano silicon, nanometer titanium dioxide zinc, nano-calcium carbonate magnesium calcium, nano zirconium dioxide, nano aluminium oxide, nano oxidized barium, the nanometer sodium fluoride, the nanometer cesium fluoride, the nanometer lanthanum fluoride, nano-calcium carbonate, a kind of in the nano barium sulfate etc. or at least two kinds mixture wherein, these inorganic nano-particles have higher refractive index, ultraviolet ray there is excellent shielding effect, thereby further strengthened the ultraviolet-resistent property and the weatherability of solar battery back film of the present invention, prolonged ageing time.
Solvent in the weathering layer of the present invention can be ester class and/or ketones solvent commonly used, specifically can be a kind of in butyl acetate, ethyl acetate, cyclohexanone, the butanone or at least two kinds mixture wherein, this type of solvent toxicity is less, thereby helps reducing the pollution of production process to environment.
The base material of solar battery back film of the present invention can be a kind of in the materials such as PCTFE, PET, PC, PBT, PEN, be the adhesive force between base material and the weathering layer in the further raising solar battery back film of the present invention, this substrate surface can be handled, as corona treatment or chemical treatment, make substrate surface have the above surface tension of 40dyn/cm.The thermal coefficient of expansion of this base material is 2.0 * 10
-5/ K～10.0 * 10
-5/ K.
The thickness of base material of the present invention is about the 100-250 micron, and the thickness of weathering layer is about the 5-62.5 micron, and the thickness of this weathering layer is 0.05～0.25 times of base material thickness, is preferably 0.1～0.2 times.
Solar battery back film of the present invention can adopt common coating process, is coated with or spraying etc. is coated weathering layer on the base material as roller coat, scraper.Wherein weathering layer can be coated the one or both sides of base material, when the base material two sides all is coated with weathering layer, can adopt identical or different coating method formation effect identical, the weathering layer that lines is different can specifically be selected the coating process of weathering layer according to actual conditions situation and appearance requirement.
The present invention further provides a kind of preparation method of solar battery back film, be specially at the above-mentioned weathering layer of the surface coated of base material, weathering layer obtains solar battery back film of the present invention after solidifying.
Further specify solar battery back film of the present invention below in conjunction with accompanying drawing.
Fig. 1 is the schematic diagram of the solar battery back film of one embodiment of the present of invention, and as shown in Figure 1, solar battery back film 1 comprises base material 11 and weathering layer 12, and weathering layer 12 is coated the one side of base material 11.
Fig. 2 is the schematic diagram of the solar battery back film of another embodiment of the present invention, and as shown in Figure 2, solar battery back film 2 comprises base material 21 and weathering layer 22, and weathering layer 22 is coated the two sides of base material 21.
It below is the specific embodiment of technical solution of the present invention
One, the preparation of solar battery back film
Embodiment 1: the preparation of notacoria 1
Weathering layer preparation of compositions: the butyl acetate that in container, adds 30 weight portions, the nano silicon that adds 0.1 weight portion then, stir, PEPA (the PC5000 that adds 4 weight portions again, and then progressively add the curing agent HDI (PC2000, Nippon Paint Co., Ltd) of 0.2 weight portion Nippon Paint Co., Ltd),, after stirring, obtain weathering layer composition 1 of the present invention.
The preparation of notacoria: above-mentioned composition 1 coated on 100 microns the PCTFE base material, concrete coating process is as follows: base material unreels through unreeling machine (the full-automatic film unreeling machine of GuangDong ShiCheng Plastic Machine Co., Ltd), automatic charging then, after being coated with on base material, toasts composition through three sections drying-plate casees (the plain edition drying-plate case of the emerging printing equipment of Hangzhou great waves Co., Ltd), drying-plate oven temperature, degree is made as 120 ℃ respectively, 100 ℃, 90 ℃, drying tunnel length is 10～30m, linear velocity is 5-40m/min, after winder (the full-automatic film take-up machine of GuangDong ShiCheng Plastic Machine Co., Ltd) rolling, obtain weathering layer thickness after the baking and be 5 microns solar battery back film;
According to above step, the another side coating weathering layer composition 1 at base material obtains solar battery back film 1 of the present invention.
Embodiment 2: the preparation of notacoria 2
Weathering layer preparation of compositions: the butyl acetate that in container, adds 35 weight portions, the nano-calcium carbonate that adds 0.3 weight portion then, stir, the PEPA that adds 8 weight portions again, and then progressively add the curing agent HDI of 0.7 weight portion, after stirring, obtain weathering layer composition 2 of the present invention.
The preparation of notacoria: above-mentioned composition 2 coated on 100 microns the PCTFE base material, concrete coating process is as follows: base material unreels through unreeling machine (the full-automatic film unreeling machine of GuangDong ShiCheng Plastic Machine Co., Ltd), automatic charging then, after being coated with on base material, toasts composition through three sections drying-plate casees (the plain edition drying-plate case of the emerging printing equipment of Hangzhou great waves Co., Ltd), drying-plate oven temperature, degree is made as 120 ℃ respectively, 100 ℃, 90 ℃, drying tunnel length is 10～30m, linear velocity is 5-40m/min, after winder (the full-automatic film take-up machine of GuangDong ShiCheng Plastic Machine Co., Ltd) rolling, obtain weathering layer thickness after the baking and be 7 microns solar battery back film;
According to above step, the another side coating weathering layer composition 2 at base material obtains solar battery back film 2 of the present invention.
Embodiment 3: the preparation of notacoria 3
Weathering layer preparation of compositions: the butyl acetate that in container, adds 40 weight portions, the nano titanium oxide that adds 0.5 weight portion then, stir, the PEPA that adds 13 weight portions again, and then progressively add the curing agent HDI of 1.5 weight portions, after stirring, obtain weathering layer composition 3 of the present invention.
The preparation of notacoria: above-mentioned composition 3 coated on 100 microns the PCTFE base material, concrete coating process is as follows: base material unreels through unreeling machine (the full-automatic film unreeling machine of GuangDong ShiCheng Plastic Machine Co., Ltd), automatic charging then, after being coated with on base material, toasts composition through three sections drying-plate casees (the plain edition drying-plate case of the emerging printing equipment of Hangzhou great waves Co., Ltd), drying-plate oven temperature, degree is made as 120 ℃ respectively, 100 ℃, 90 ℃, drying tunnel length is 10～30m, linear velocity is 5-40m/min, after winder (the full-automatic film take-up machine of GuangDong ShiCheng Plastic Machine Co., Ltd) rolling, obtain weathering layer thickness after the baking and be 25 microns solar battery back film;
According to above step, the another side coating weathering layer composition 3 at base material obtains solar battery back film 3 of the present invention.
Embodiment 4: the preparation of notacoria 4
Weathering layer preparation of compositions: the butyl acetate that in container, adds 43 weight portions, the nanometer titanium dioxide zinc that adds 1 weight portion then, stir, the PEPA that adds 15 weight portions again, and then progressively add the curing agent IPDI of 2 weight portions, after stirring, obtain weathering layer composition 4 of the present invention.
The preparation of notacoria: above-mentioned composition 4 coated on 120 microns the PCTFE base material, concrete coating process is as follows: base material unreels through unreeling machine (the full-automatic film unreeling machine of GuangDong ShiCheng Plastic Machine Co., Ltd), automatic charging then, after being coated with on base material, toasts composition through three sections drying-plate casees (the plain edition drying-plate case of the emerging printing equipment of Hangzhou great waves Co., Ltd), drying-plate oven temperature, degree is made as 120 ℃ respectively, 100 ℃, 90 ℃, drying tunnel length is 10～30m, linear velocity is 5-40m/min, after winder (the full-automatic film take-up machine of GuangDong ShiCheng Plastic Machine Co., Ltd) rolling, obtain weathering layer thickness after the baking and be 10.8 microns solar battery back film;
According to above step, the another side coating weathering layer composition 4 at base material obtains solar battery back film 4 of the present invention.
Embodiment 5: the preparation of notacoria 5
Weathering layer preparation of compositions: the butyl acetate that in container, adds 47 weight portions, the nano barium sulfate that adds 1.7 weight portions then, stir, the PEPA that adds 20 weight portions again, and then progressively add the curing agent IPDI of 3.2 weight portions, after stirring, obtain weathering layer composition 5 of the present invention.
The preparation of notacoria: above-mentioned composition 5 coated on 120 microns the PBT base material, concrete coating process is as follows: base material unreels through unreeling machine (the full-automatic film unreeling machine of GuangDong ShiCheng Plastic Machine Co., Ltd), automatic charging then, after being coated with on base material, toasts composition through three sections drying-plate casees (the plain edition drying-plate case of the emerging printing equipment of Hangzhou great waves Co., Ltd), drying-plate oven temperature, degree is made as 120 ℃ respectively, 100 ℃, 90 ℃, drying tunnel length is 10～30m, linear velocity is 5-40m/min, after winder (the full-automatic film take-up machine of GuangDong ShiCheng Plastic Machine Co., Ltd) rolling, obtain weathering layer thickness after the baking and be 30 microns solar battery back film;
According to above step, the another side coating weathering layer composition 5 at base material obtains solar battery back film 5 of the present invention.
Embodiment 6: the preparation of notacoria 6
Weathering layer preparation of compositions: the ethyl acetate that in container, adds 50 weight portions, the nano-calcium carbonate magnesium calcium that adds 2.5 weight portions then, stir, the polyethylene glycol adipate glycol that adds 27 weight portions again, and then progressively add the curing agent XDI of 4 weight portions, after stirring, obtain weathering layer composition 6 of the present invention.
The preparation of notacoria: above-mentioned composition 6 coated on 150 microns the PBT base material, concrete coating process is as follows: base material unreels through unreeling machine (the full-automatic film unreeling machine of GuangDong ShiCheng Plastic Machine Co., Ltd), automatic charging then, after being coated with on base material, toasts composition through three sections drying-plate casees (the plain edition drying-plate case of the emerging printing equipment of Hangzhou great waves Co., Ltd), drying-plate oven temperature, degree is made as 120 ℃ respectively, 100 ℃, 90 ℃, drying tunnel length is 10～30m, linear velocity is 5-40m/min, after winder (the full-automatic film take-up machine of GuangDong ShiCheng Plastic Machine Co., Ltd) rolling, obtain weathering layer thickness after the baking and be 15 microns solar battery back film;
According to above step, the another side coating weathering layer composition 6 at base material obtains solar battery back film 6 of the present invention.
Embodiment 7: the preparation of notacoria 7
Weathering layer preparation of compositions: the ethyl acetate that in container, adds 55 weight portions, the nano zirconium dioxide that adds 3 weight portions then, stir, poly-adipate glycol-propylene glycol ester the glycol that adds 35 weight portions again, and then progressively add the curing agent XDI of 5 weight portions, after stirring, obtain weathering layer composition 7 of the present invention.
The preparation of notacoria: above-mentioned composition 7 coated on 150 microns the PBT base material, concrete coating process is as follows: base material unreels through unreeling machine (the full-automatic film unreeling machine of GuangDong ShiCheng Plastic Machine Co., Ltd), automatic charging then, after being coated with on base material, toasts composition through three sections drying-plate casees (the plain edition drying-plate case of the emerging printing equipment of Hangzhou great waves Co., Ltd), drying-plate oven temperature, degree is made as 120 ℃ respectively, 100 ℃, 90 ℃, drying tunnel length is 10～30m, linear velocity is 5-40m/min, after winder (the full-automatic film take-up machine of GuangDong ShiCheng Plastic Machine Co., Ltd) rolling, obtain weathering layer thickness after the baking and be 18 microns solar battery back film;
According to above step, the another side coating weathering layer composition 7 at base material obtains solar battery back film 7 of the present invention.
Embodiment 8: the preparation of notacoria 8
Weathering layer preparation of compositions: the ethyl acetate that in container, adds 60 weight portions, the nano aluminium oxide that adds 4 weight portions then, stir, the poly-adipic acid diglycol esterdiol that adds 40 weight portions again, and then progressively add the curing agent HTDI of 7 weight portions, after stirring, obtain weathering layer composition 8 of the present invention.
The preparation of notacoria: above-mentioned composition 8 coated on 180 microns the PBT base material, concrete coating process is as follows: base material unreels through unreeling machine (the full-automatic film unreeling machine of GuangDong ShiCheng Plastic Machine Co., Ltd), automatic charging then, after being coated with on base material, toasts composition through three sections drying-plate casees (the plain edition drying-plate case of the emerging printing equipment of Hangzhou great waves Co., Ltd), drying-plate oven temperature, degree is made as 120 ℃ respectively, 100 ℃, 90 ℃, drying tunnel length is 10～30m, linear velocity is 5-40m/min, after winder (the full-automatic film take-up machine of GuangDong ShiCheng Plastic Machine Co., Ltd) rolling, obtain weathering layer thickness after the baking and be 25 microns solar battery back film;
According to above step, the another side coating weathering layer composition 8 at base material obtains solar battery back film 8 of the present invention.
Embodiment 9: the preparation of notacoria 9
Weathering layer preparation of compositions: the ethyl acetate that in container, adds 65 weight portions, the nano oxidized barium that adds 4.5 weight portions then, stir, poly-adipate glycol-diglycol the esterdiol that adds 45 weight portions again, and then progressively add the curing agent HTDI of 9 weight portions, after stirring, obtain weathering layer composition 9 of the present invention.
The preparation of notacoria: above-mentioned composition 9 coated on 200 microns the PEN base material, concrete coating process is as follows: base material unreels through unreeling machine (the full-automatic film unreeling machine of GuangDong ShiCheng Plastic Machine Co., Ltd), automatic charging then, after being coated with on base material, toasts composition through three sections drying-plate casees (the plain edition drying-plate case of the emerging printing equipment of Hangzhou great waves Co., Ltd), drying-plate oven temperature, degree is made as 120 ℃ respectively, 100 ℃, 90 ℃, drying tunnel length is 10～30m, linear velocity is 5-40m/min, after winder (the full-automatic film take-up machine of GuangDong ShiCheng Plastic Machine Co., Ltd) rolling, obtain weathering layer thickness after the baking and be 10 microns solar battery back film;
According to above step, the another side coating weathering layer composition 9 at base material obtains solar battery back film 9 of the present invention.
Embodiment 10: the preparation of notacoria 10
Weathering layer preparation of compositions: the ethyl acetate that in container, adds 70 weight portions, the nanometer sodium fluoride that adds 5 weight portions then, stir, the poly-adipic acid-1 that adds 50 weight portions again, 4-butanediol ester glycol, and then progressively add the curing agent HMDI of 10 weight portions, after stirring, obtain weathering layer composition 10 of the present invention.
The preparation of notacoria: above-mentioned composition 10 coated on 200 microns the PEN base material, concrete coating process is as follows: base material unreels through unreeling machine (the full-automatic film unreeling machine of GuangDong ShiCheng Plastic Machine Co., Ltd), automatic charging then, after being coated with on base material, toasts composition through three sections drying-plate casees (the plain edition drying-plate case of the emerging printing equipment of Hangzhou great waves Co., Ltd), drying-plate oven temperature, degree is made as 120 ℃ respectively, 100 ℃, 90 ℃, drying tunnel length is 10～30m, linear velocity is 5-40m/min, after winder (the full-automatic film take-up machine of GuangDong ShiCheng Plastic Machine Co., Ltd) rolling, obtain weathering layer thickness after the baking and be 30 microns solar battery back film;
According to above step, the another side coating weathering layer composition 10 at base material obtains solar battery back film 10 of the present invention.
Embodiment 11: the preparation of notacoria 11
Weathering layer preparation of compositions: the cyclohexanone that in container, adds 70 weight portions, the nanometer cesium fluoride that adds 5 weight portions then, stir, the poly-adipate glycol-1 that adds 4 weight portions again, 4-butanediol ester glycol, and then progressively add the curing agent HMDI of 0.2 weight portion, after stirring, obtain weathering layer composition 11 of the present invention.
The preparation of notacoria: above-mentioned composition 11 coated on 200 microns the PEN base material, concrete coating process is as follows: base material unreels through unreeling machine (the full-automatic film unreeling machine of GuangDong ShiCheng Plastic Machine Co., Ltd), automatic charging then, after being coated with on base material, toasts composition through three sections drying-plate casees (the plain edition drying-plate case of the emerging printing equipment of Hangzhou great waves Co., Ltd), drying-plate oven temperature, degree is made as 120 ℃ respectively, 100 ℃, 90 ℃, drying tunnel length is 10～30m, linear velocity is 5-40m/min, after winder (the full-automatic film take-up machine of GuangDong ShiCheng Plastic Machine Co., Ltd) rolling, obtain weathering layer thickness after the baking and be 34 microns solar battery back film;
According to above step, the another side coating weathering layer composition 11 at base material obtains solar battery back film 11 of the present invention.
Embodiment 12: the preparation of notacoria 12
Weathering layer preparation of compositions: the solvent (comprising the ethyl acetate of 20 weight portions and the cyclohexanone of 25 weight portions) that in container, adds 45 weight portions, the nanometer lanthanum fluoride that adds 2 weight portions then, stir, the poly-adipic acid neopentyl glycol-1 that adds 4 weight portions again, 6-hexylene glycol esterdiol, and then progressively add the curing agent (comprising the HDI of 0.1 weight portion and the IPDI of 0.1 weight portion) of 0.2 weight portion, after stirring, obtain weathering layer composition 12 of the present invention.
The preparation of notacoria: above-mentioned composition 12 coated on 200 microns the PEN base material, concrete coating process is as follows: base material unreels through unreeling machine (the full-automatic film unreeling machine of GuangDong ShiCheng Plastic Machine Co., Ltd), automatic charging then, after being coated with on base material, toasts composition through three sections drying-plate casees (the plain edition drying-plate case of the emerging printing equipment of Hangzhou great waves Co., Ltd), drying-plate oven temperature, degree is made as 120 ℃ respectively, 100 ℃, 90 ℃, drying tunnel length is 10～30m, linear velocity is 5-40m/min, after winder (the full-automatic film take-up machine of GuangDong ShiCheng Plastic Machine Co., Ltd) rolling, obtain weathering layer thickness after the baking and be 50 microns solar battery back film;
According to above step, the another side coating weathering layer composition 12 at base material obtains solar battery back film 12 of the present invention.
Embodiment 13: the preparation of notacoria 13
Weathering layer preparation of compositions: the solvent (butyl acetate that comprises 10 weight portions that in container, adds 40 weight portions, the cyclohexanone of the ethyl acetate of 20 weight portions and 10 weight portions), the nano particle (comprising the nano silicon of 0.5 weight portion and the zinc oxide of 0.5 weight portion) that adds 1 weight portion then, stir, the PEPA (comprising the polyethylene glycol adipate glycol of 20 weight portions and the poly-adipate glycol-propylene glycol ester glycol of 30 weight portions) that adds 50 weight portions again, and then progressively add the curing agent (comprising the HDI of 4 weight portions and the XDI of 6 weight portions) of 10 weight portions, after stirring, obtain weathering layer composition 13 of the present invention.
The preparation of notacoria: above-mentioned composition 13 coated on 220 microns the PET base material, concrete coating process is as follows: base material unreels through unreeling machine (the full-automatic film unreeling machine of GuangDong ShiCheng Plastic Machine Co., Ltd), automatic charging then, after being coated with on base material, toasts composition through three sections drying-plate casees (the plain edition drying-plate case of the emerging printing equipment of Hangzhou great waves Co., Ltd), drying-plate oven temperature, degree is made as 120 ℃ respectively, 100 ℃, 90 ℃, drying tunnel length is 10～30m, linear velocity is 5-40m/min, after winder (the full-automatic film take-up machine of GuangDong ShiCheng Plastic Machine Co., Ltd) rolling, obtain weathering layer thickness after the baking and be 42 microns solar battery back film;
According to above step, the another side coating weathering layer composition 13 at base material obtains solar battery back film 13 of the present invention.
Embodiment 14: the preparation of notacoria 14
Weathering layer preparation of compositions: the cyclohexanone that in container, adds 30 weight portions, the nano particle (comprising the nano titanium oxide of 2 weight portions and the nano-calcium carbonate magnesium calcium of 3 weight portions) that adds 5 weight portions then, stir, the PEPA (comprising the poly-adipic acid diglycol esterdiol of 1 weight portion and the poly-adipate glycol-diglycol esterdiol of 3 weight portions) that adds 4 weight portions again, and then progressively add the curing agent (comprising the XDI of 1 weight portion and the HTDI of 2 weight portions) of 3 weight portions, after stirring, obtain weathering layer composition 14 of the present invention.
The preparation of notacoria: above-mentioned composition 14 coated on 220 microns the PET base material, concrete coating process is as follows: base material unreels through unreeling machine (the full-automatic film unreeling machine of GuangDong ShiCheng Plastic Machine Co., Ltd), automatic charging then, after being coated with on base material, toasts composition through three sections drying-plate casees (the plain edition drying-plate case of the emerging printing equipment of Hangzhou great waves Co., Ltd), drying-plate oven temperature, degree is made as 120 ℃ respectively, 100 ℃, 90 ℃, drying tunnel length is 10～30m, linear velocity is 5-40m/min, after winder (the full-automatic film take-up machine of GuangDong ShiCheng Plastic Machine Co., Ltd) rolling, obtain weathering layer thickness after the baking and be 44 microns solar battery back film;
According to above step, the another side coating weathering layer composition 14 at base material obtains solar battery back film 14 of the present invention.
Embodiment 15: the preparation of notacoria 15
Weathering layer preparation of compositions: the cyclohexanone that in container, adds 55 weight portions, the nano particle (comprising the nano zirconium dioxide of 1 weight portion and the nano aluminium oxide of 3 weight portions) that adds 4 weight portions then, stir, PEPA (the poly-adipic acid-1 that comprises 20 weight portions that adds 50 weight portions again, the poly-adipate glycol-1 of 4-butanediol ester glycol and 30 weight portions, 4-butanediol ester glycol), and then progressively add the curing agent (comprising the HTDI of 5 weight portions and the HMDI of 5 weight portions) of 10 weight portions, after stirring, obtain weathering layer composition 15 of the present invention.
The preparation of notacoria: above-mentioned composition 15 coated on 240 microns the PET base material, concrete coating process is as follows: base material unreels through unreeling machine (the full-automatic film unreeling machine of GuangDong ShiCheng Plastic Machine Co., Ltd), automatic charging then, after being coated with on base material, toasts composition through three sections drying-plate casees (the plain edition drying-plate case of the emerging printing equipment of Hangzhou great waves Co., Ltd), drying-plate oven temperature, degree is made as 120 ℃ respectively, 100 ℃, 90 ℃, drying tunnel length is 10～30m, linear velocity is 5-40m/min, after winder (the full-automatic film take-up machine of GuangDong ShiCheng Plastic Machine Co., Ltd) rolling, obtain weathering layer thickness after the baking and be 12 microns solar battery back film;
According to above step, the another side coating weathering layer composition 15 at base material obtains solar battery back film 15 of the present invention.
Embodiment 16: the preparation of notacoria 16
Weathering layer preparation of compositions: the butanone that in container, adds 30 weight portions, the nano particle (comprising the nano oxidized barium of 0.04 weight portion and the nanometer cesium fluoride of 0.06 weight portion) that adds 0.1 weight portion then, stir, PEPA (the poly-adipate glycol-1 of 10 weight portions that adds 20 weight portions again, the poly-adipic acid neopentyl glycol-1 of 4-butanediol ester glycol and 10 weight portions, 6-hexylene glycol esterdiol), and then progressively add the curing agent (comprising the IPDI of 1 weight portion and the HMDI of 3 weight portions) of 4 weight portions, after stirring, obtain weathering layer composition 16 of the present invention.
The preparation of notacoria: above-mentioned composition 16 coated on 240 microns the PET base material, concrete coating process is as follows: base material unreels through unreeling machine (the full-automatic film unreeling machine of GuangDong ShiCheng Plastic Machine Co., Ltd), automatic charging then, after being coated with on base material, toasts composition through three sections drying-plate casees (the plain edition drying-plate case of the emerging printing equipment of Hangzhou great waves Co., Ltd), drying-plate oven temperature, degree is made as 120 ℃ respectively, 100 ℃, 90 ℃, drying tunnel length is 10～30m, linear velocity is 5-40m/min, after winder (the full-automatic film take-up machine of GuangDong ShiCheng Plastic Machine Co., Ltd) rolling, obtain weathering layer thickness after the baking and be 55 microns solar battery back film;
According to above step, the another side coating weathering layer composition 16 at base material obtains solar battery back film 16 of the present invention.
Embodiment 17: the preparation of notacoria 17
Weathering layer preparation of compositions: the solvent (comprising the cyclohexanone of 30 weight portions and the butanone of 40 weight portions) that in container, adds 70 weight portions, the nano particle (comprising the nanometer sodium fluoride of 2 weight portions and the nanometer lanthanum fluoride of 3 weight portions) that adds 5 weight portions then, stir, PEPA (the polyethylene glycol adipate glycol that comprises 10 weight portions that adds 40 weight portions again, the poly-adipic acid diglycol esterdiol of the poly-adipate glycol-propylene glycol ester glycol of 10 weight portions and 20 weight portions), and then progressively add the curing agent (HDI that comprises 3 weight portions of 8 weight portions, the XDI of the IPDI of 3 weight portions and 2 weight portions), after stirring, obtain weathering layer composition 17 of the present invention.
The preparation of notacoria: above-mentioned composition 17 coated on 240 microns the PC base material, concrete coating process is as follows: base material unreels through unreeling machine (the full-automatic film unreeling machine of GuangDong ShiCheng Plastic Machine Co., Ltd), automatic charging then, after being coated with on base material, toasts composition through three sections drying-plate casees (the plain edition drying-plate case of the emerging printing equipment of Hangzhou great waves Co., Ltd), drying-plate oven temperature, degree is made as 120 ℃ respectively, 100 ℃, 90 ℃, drying tunnel length is 10～30m, linear velocity is 5-40m/min, after winder (the full-automatic film take-up machine of GuangDong ShiCheng Plastic Machine Co., Ltd) rolling, obtain weathering layer thickness after the baking and be 60 microns solar battery back film;
According to above step, the another side coating weathering layer composition 17 at base material obtains solar battery back film 17 of the present invention.
Embodiment 18: the preparation of notacoria 18
Weathering layer preparation of compositions: the solvent (ethyl acetate that comprises 20 weight portions that in container, adds 70 weight portions, the butanone of the cyclohexanone of 20 weight portions and 30 weight portions), nano particle (the nano titanium oxide that comprises 1 weight portion that adds 5 weight portions then, the nanometer titanium dioxide zinc of the nano silicon of 2 weight portions and 2 weight portions), stir, PEPA (poly-adipate glycol-propylene glycol ester the glycol that comprises 20 weight portions that adds 50 weight portions again, the poly-adipic acid diglycol esterdiol of 20 weight portions and the poly-adipate glycol-diglycol esterdiol of 10 weight portions), and then progressively add the curing agent (IPDI that comprises 0.2 weight portion of 0.7 weight portion, 0.2 the HTDI of the XDI of weight portion and 0.3 weight portion), after stirring, obtain weathering layer composition 18 of the present invention.
The preparation of notacoria: above-mentioned composition 18 coated on 250 microns the PC base material, concrete coating process is as follows: base material unreels through unreeling machine (the full-automatic film unreeling machine of GuangDong ShiCheng Plastic Machine Co., Ltd), automatic charging then, after being coated with on base material, toasts composition through three sections drying-plate casees (the plain edition drying-plate case of the emerging printing equipment of Hangzhou great waves Co., Ltd), drying-plate oven temperature, degree is made as 120 ℃ respectively, 100 ℃, 90 ℃, drying tunnel length is 10～30m, linear velocity is 5-40m/min, after winder (the full-automatic film take-up machine of GuangDong ShiCheng Plastic Machine Co., Ltd) rolling, obtain weathering layer thickness after the baking and be 62.5 microns solar battery back film;
According to above step, the another side coating weathering layer composition 18 at base material obtains solar battery back film 18 of the present invention.
Embodiment 19: the preparation of notacoria 19
Weathering layer preparation of compositions: the butanone that in container, adds 30 weight portions, nano particle (the nanometer titanium dioxide zinc that comprises 0.03 weight portion that adds 0.1 weight portion then, 0.03 the nano zirconium dioxide of weight portion, 0.04 the nano aluminium oxide of weight portion), stir, PEPA (the poly-adipic acid diglycol esterdiol that comprises 10 weight portions that adds 50 weight portions again, poly-adipate glycol-diglycol the esterdiol of 10 weight portions and the poly-adipic acid-1 of 30 weight portions, 4-butanediol ester glycol), and then progressively add the curing agent (XDI that comprises 2 weight portions of 10 weight portions, the HMDI of the HTDI of 3 weight portions and 5 weight portions), after stirring, obtain weathering layer composition 19 of the present invention.
The preparation of notacoria: above-mentioned composition 19 coated on 250 microns the PC base material, concrete coating process is as follows: base material unreels through unreeling machine (the full-automatic film unreeling machine of GuangDong ShiCheng Plastic Machine Co., Ltd), automatic charging then, after being coated with on base material, toasts composition through three sections drying-plate casees (the plain edition drying-plate case of the emerging printing equipment of Hangzhou great waves Co., Ltd), drying-plate oven temperature, degree is made as 120 ℃ respectively, 100 ℃, 90 ℃, drying tunnel length is 10～30m, linear velocity is 5-40m/min, after winder (the full-automatic film take-up machine of GuangDong ShiCheng Plastic Machine Co., Ltd) rolling, obtain weathering layer thickness after the baking and be 12.5 microns solar battery back film;
According to above step, the another side coating weathering layer composition 19 at base material obtains solar battery back film 19 of the present invention.
Embodiment 20: the preparation of notacoria 20
Weathering layer preparation of compositions: the butanone that in container, adds 45 weight portions, nano particle (the nano aluminium oxide that comprises 1 weight portion that adds 2 weight portions then, 0.5 the nano oxidized barium of weight portion and the nanometer sodium fluoride of 0.5 weight portion), stir, PEPA (the poly-adipic acid-1 that comprises 20 weight portions that adds 50 weight portions again, 4-butanediol ester glycol, the poly-adipate glycol-1 of 20 weight portions, 4-butanediol ester glycol, the poly-adipic acid neopentyl glycol-1 of 10 weight portions, 6-hexylene glycol esterdiol), and then progressively add the curing agent (HDI that comprises 2 weight portions of 10 weight portions, the HMDI of the IPDI of 2 weight portions and 6 weight portions), after stirring, obtain weathering layer composition 20 of the present invention.
The preparation of notacoria: above-mentioned composition 20 coated on 250 microns the PC base material, concrete coating process is as follows: base material unreels through unreeling machine (the full-automatic film unreeling machine of GuangDong ShiCheng Plastic Machine Co., Ltd), automatic charging then, after being coated with on base material, toasts composition through three sections drying-plate casees (the plain edition drying-plate case of the emerging printing equipment of Hangzhou great waves Co., Ltd), drying-plate oven temperature, degree is made as 120 ℃ respectively, 100 ℃, 90 ℃, drying tunnel length is 10～30m, linear velocity is 5-40m/min, after winder (the full-automatic film take-up machine of GuangDong ShiCheng Plastic Machine Co., Ltd) rolling, obtain weathering layer thickness after the baking and be 37.5 microns solar battery back film;
According to above step, the another side coating weathering layer composition 20 at base material obtains solar battery back film 20 of the present invention.
Embodiment 21: the preparation of notacoria 21
Weathering layer preparation of compositions: the butyl acetate that in container, adds 30 weight portions, the nano silicon that adds 0.1 weight portion then, stir, PEPA (the PC5000 that adds 4 weight portions again, and then progressively add the curing agent HDI (PC2000, Nippon Paint Co., Ltd) of 0.2 weight portion Nippon Paint Co., Ltd),, after stirring, obtain weathering layer composition 21 of the present invention.
The preparation of notacoria: above-mentioned composition 21 coated on 100 microns the PCTFE base material, concrete coating process is as follows: base material unreels through unreeling machine (the full-automatic film unreeling machine of GuangDong ShiCheng Plastic Machine Co., Ltd), automatic charging then, after being coated with on base material, toasts composition through three sections drying-plate casees (the plain edition drying-plate case of the emerging printing equipment of Hangzhou great waves Co., Ltd), drying-plate oven temperature, degree is made as 120 ℃ respectively, 100 ℃, 90 ℃, drying tunnel length is 10～30m, linear velocity is 5-40m/min, after winder (the full-automatic film take-up machine of GuangDong ShiCheng Plastic Machine Co., Ltd) rolling, obtain weathering layer thickness after the baking and be 5 microns solar battery back film, promptly obtain solar battery back film 21 of the present invention.
Embodiment 22: the preparation of notacoria 22
Weathering layer preparation of compositions: the butyl acetate that in container, adds 40 weight portions, the nano titanium oxide that adds 0.5 weight portion then, stir, the PEPA that adds 13 weight portions again, and then progressively add the curing agent HDI of 1.5 weight portions, after stirring, obtain weathering layer composition 22 of the present invention.
The preparation of notacoria: above-mentioned composition 22 coated on 100 microns the PEN base material, concrete coating process is as follows: base material unreels through unreeling machine (the full-automatic film unreeling machine of GuangDong ShiCheng Plastic Machine Co., Ltd), automatic charging then, after being coated with on base material, toasts composition through three sections drying-plate casees (the plain edition drying-plate case of the emerging printing equipment of Hangzhou great waves Co., Ltd), drying-plate oven temperature, degree is made as 120 ℃ respectively, 100 ℃, 90 ℃, drying tunnel length is 10～30m, linear velocity is 5-40m/min, after winder (the full-automatic film take-up machine of GuangDong ShiCheng Plastic Machine Co., Ltd) rolling, obtain weathering layer thickness after the baking and be 25 microns solar battery back film, obtain solar battery back film 22 of the present invention.
Embodiment 23: the preparation of notacoria 23
Weathering layer preparation of compositions: the ethyl acetate that in container, adds 50 weight portions, the nano-calcium carbonate magnesium calcium that adds 2.5 weight portions then, stir, the polyethylene glycol adipate glycol that adds 27 weight portions again, and then progressively add the curing agent XDI of 4 weight portions, after stirring, obtain weathering layer composition 23 of the present invention.
The preparation of notacoria: above-mentioned composition 23 coated on 150 microns the PBT base material, concrete coating process is as follows: base material unreels through unreeling machine (the full-automatic film unreeling machine of GuangDong ShiCheng Plastic Machine Co., Ltd), automatic charging then, after being coated with on base material, toasts composition through three sections drying-plate casees (the plain edition drying-plate case of the emerging printing equipment of Hangzhou great waves Co., Ltd), drying-plate oven temperature, degree is made as 120 ℃ respectively, 100 ℃, 90 ℃, drying tunnel length is 10～30m, linear velocity is 5-40m/min, after winder (the full-automatic film take-up machine of GuangDong ShiCheng Plastic Machine Co., Ltd) rolling, obtain weathering layer thickness after the baking and be 15 microns solar battery back film, promptly obtain solar battery back film 23 of the present invention.
Embodiment 24: the preparation of notacoria 24
Weathering layer preparation of compositions: the ethyl acetate that in container, adds 60 weight portions, the nano aluminium oxide that adds 4 weight portions then, stir, the poly-adipic acid diglycol esterdiol that adds 40 weight portions again, and then progressively add the curing agent HTDI of 7 weight portions, after stirring, obtain weathering layer composition 24 of the present invention.
The preparation of notacoria: above-mentioned composition 24 coated on 180 microns the PET base material, concrete coating process is as follows: base material unreels through unreeling machine (the full-automatic film unreeling machine of GuangDong ShiCheng Plastic Machine Co., Ltd), automatic charging then, after being coated with on base material, toasts composition through three sections drying-plate casees (the plain edition drying-plate case of the emerging printing equipment of Hangzhou great waves Co., Ltd), drying-plate oven temperature, degree is made as 120 ℃ respectively, 100 ℃, 90 ℃, drying tunnel length is 10～30m, linear velocity is 5-40m/min, after winder (the full-automatic film take-up machine of GuangDong ShiCheng Plastic Machine Co., Ltd) rolling, obtain weathering layer thickness after the baking and be 25 microns solar battery back film, promptly obtain solar battery back film 24 of the present invention.
Embodiment 25: the preparation of notacoria 25
Weathering layer preparation of compositions: the ethyl acetate that in container, adds 70 weight portions, the nanometer sodium fluoride that adds 5 weight portions then, stir, the poly-adipic acid-1 that adds 50 weight portions again, 4-butanediol ester glycol, and then progressively add the curing agent HMDI of 10 weight portions, after stirring, obtain weathering layer composition 25 of the present invention.
The preparation of notacoria: above-mentioned composition 25 coated on 200 microns the PC base material, concrete coating process is as follows: base material unreels through unreeling machine (the full-automatic film unreeling machine of GuangDong ShiCheng Plastic Machine Co., Ltd), automatic charging then, after being coated with on base material, toasts composition through three sections drying-plate casees (the plain edition drying-plate case of the emerging printing equipment of Hangzhou great waves Co., Ltd), drying-plate oven temperature, degree is made as 120 ℃ respectively, 100 ℃, 90 ℃, drying tunnel length is 10～30m, linear velocity is 5-40m/min, after winder (the full-automatic film take-up machine of GuangDong ShiCheng Plastic Machine Co., Ltd) rolling, obtain weathering layer thickness after the baking and be 30 microns solar battery back film, promptly obtain solar battery back film 25 of the present invention.
Two, comparative example
Compound notacoria (PVDF+PET+PVDF) Shanghai Jofur Advanced Materials Co. Ltd.
Three, solar battery back film test
Test one: moisture-vapor transmission test
According to standard A STM F 1249, adopt TSY-W2 moisture-vapor transmission tester that the moisture-vapor transmission of notacoria 1-25 is tested.
Test two: weatherability test
According to standard ISO 4892-2, adopt Q-sun xenon lamp type weather resistance test machine that the weatherability of notacoria 1-25 is tested.
Test three: adhesive force test
According to standard GB/T 9286-1998, adopt paint film to draw lattice instrument (Kunshan three promise instrument QFH paint films are drawn the lattice instrument, and drawing the lattice grade superlative degree is 0 grade) adhesive force of notacoria 1-25 is tested.
Table 1: each constituent content among the notacoria composition 1-25
Table 2: notacoria 1-25 performance test
Table 1 and table 2 have shown each constituent content and performance test data in the solar battery back film of the present invention respectively, wherein, notacoria 1-20 is a base material double spread weathering layer, notacoria 21-25 is base material single face coating weathering layer, as known from Table 2, the moisture-vapor transmission of solar battery back film of the present invention is about 2.63-2.95g/m
224h, and notacoria 1-25 is 0 grade by the test of atmospheric exposure test test and adhesive force all, shown aqueous vapor barrier, weatherability and tack that solar battery back film of the present invention is good.
According to above technical scheme as can be known, the weathering layer that the present invention is made up of PEPA, isocyanates, inorganic nano-particle etc. in the substrate surface coating constitutes solar battery back film, and manufacture craft is simple, and cost is lower; Simultaneously, weathering layer composition of the present invention has compatibility preferably, more helps coating and produces; The moisture-vapor transmission of solar battery back film of the present invention is about 2.63-2.95g/m
224h has good weatherability, tack and pliability.
The above only is preferred embodiment of the present invention, just is used for description and interpretation the present invention, is not to be used to limit protection scope of the present invention.Within spirit of the present invention and claim protection range, to any modification that the present invention did, be equal to replacement, all be included in protection scope of the present invention.
Claims (8)
1. a solar battery back film comprises base material, and the surface coated of this base material has weathering layer, it is characterized in that this weathering layer composed as follows:
PEPA 4-50 weight portion
Isocyanates 0.2-10 weight portion
Inorganic nano-particle 0.1-5 weight portion
Solvent 30-70 weight portion.
2. solar battery back film as claimed in claim 1 is characterized in that, described weathering layer composed as follows:
PEPA 15-40 weight portion
Isocyanates 1.5-5 weight portion
Inorganic nano-particle 0.5-3 weight portion
Solvent 40-55 weight portion.
3. solar battery back film as claimed in claim 1, it is characterized in that, described PEPA is polyethylene glycol adipate glycol, poly-adipate glycol-propylene glycol ester glycol, poly-adipic acid diglycol esterdiol, poly-adipate glycol-diglycol esterdiol, poly-adipic acid-1,4-butanediol ester glycol, poly-adipate glycol-1,4-butanediol ester glycol, poly-adipic acid neopentyl glycol-1, a kind of in the 6-hexylene glycol esterdiol or at least two kinds mixture wherein;
Described isocyanates is 1, a kind of in hexamethylene-diisocyanate, IPDI, XDI, Methylcyclohexyl diisocyanate, the dicyclohexyl methyl hydride diisocyanate or at least two kinds mixture wherein;
Described inorganic nano-particle is a kind of in nano titanium oxide, nano silicon, nanometer titanium dioxide zinc, nano-calcium carbonate magnesium calcium, nano zirconium dioxide, nano aluminium oxide, nano oxidized barium, nanometer sodium fluoride, nanometer cesium fluoride, nanometer lanthanum fluoride, nano-calcium carbonate, the nano barium sulfate or at least two kinds mixture wherein.
4. solar battery back film as claimed in claim 1, it is characterized in that, described base material is polytrifluorochloroethylene, PETG, Merlon, polybutylene terephthalate (PBT) or PEN, this substrate surface has the above surface tension of 40dyn/cm, and the thermal coefficient of expansion of this base material is 2.0 * 10
-5/ K～10.0 * 10
-5/ K.
5. solar battery back film as claimed in claim 1 is characterized in that, described weathering layer thickness is 0.05～0.25 times of described base material thickness.
6. solar battery back film as claimed in claim 5 is characterized in that, described weathering layer thickness is 0.1～0.2 times of described base material thickness.
7. as each described solar battery back film of claim 1-6, it is characterized in that described base material single or double is coated with weathering layer.
8. the preparation method of each described solar battery back film of claim 1-7 is characterized in that, at the described weathering layer of the surface coated of described base material, weathering layer obtains solar battery back film after solidifying.
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| CN201010254708.1 | 2010-08-11 | ||
| CN201010254708 | 2010-08-11 | ||
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| CN107369730A (en) * | 2016-05-11 | 2017-11-21 | 张家港康得新光电材料有限公司 | Encapsulating material and preparation method thereof and photoelectric device |
| CN106328760A (en) * | 2016-08-27 | 2017-01-11 | 无锡中洁能源技术有限公司 | Process for producing solar cell back plate with low cost |
| CN109004051A (en) * | 2018-06-04 | 2018-12-14 | 苏州中来光伏新材股份有限公司 | A kind of solar battery back film |
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| CN102110728B (en) | 2012-11-14 |
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Address after: Qingfeng Road, Jiangbei District 315000 in Zhejiang city of Ningbo province No. 999 Patentee after: Ningbo, Changyang, Polytron Technologies Inc Address before: Kaohsiung East Road, Beilun District 315803 in Zhejiang city of Ningbo province No. 15 Jinmao Building 21 building B-06 room Patentee before: Ningbo Changyang Technology Co., Ltd. |
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Application publication date: 20110629 Assignee: Ningbo Changlong New Material Co.,Ltd. Assignor: NINGBO SOLARTRON TECHNOLOGY Co.,Ltd. Contract record no.: X2021330000199 Denomination of invention: Solar cell back film and its preparation method Granted publication date: 20121114 License type: Common License Record date: 20210831 |