CN104835870B - Solar cell backboard - Google Patents
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- CN104835870B CN104835870B CN201510136797.2A CN201510136797A CN104835870B CN 104835870 B CN104835870 B CN 104835870B CN 201510136797 A CN201510136797 A CN 201510136797A CN 104835870 B CN104835870 B CN 104835870B
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Abstract
The present invention relates to a solar cell backboard. The solar cell backboard comprises a base material, a reflective film and a weather resistant layer, the base material and a reflecting layer are adhered by an adhesion agent, and the reflecting layer is a polycarbonate film of 75-175 micrometers. The reflecting layer of the present invention uses the polycarbonate and acrylonitrile-butadiene-styrene plastic alloys, so that the aqueous vapour transmittance of the solar call backboard is less than 1.0g/m2.24h. Moreover, the reflecting layer uses the processed titanium oxide particles and the contained pore structures, so that the reflectivity of the solar cell backboard is improved substantially, and the reflectivity to the visible light reach 100%. Further, the processed titanium oxide enables the endophilicity of a polytetrafluoroethylene fire retardant and a polycarbonate alloy to be improved, so that the flame retardant efficiency of the solar cell backboard is better.
Description
Technical field
The present invention relates to technical field of solar, particularly a kind of solar cell backboard.
Background technology
Solar energy is converted into electric energy by solaode, so inexhaustible, inexpensively free of contamination too
Sun can will become most important new forms of energy, and solar cell industry is also increasing rapidly.However, at present, solaode faces
The problem of maximum be that generating efficiency is not high, laboratory interior energy reaches 21%, industrialized production can only achieve 17%.How to carry
The overall generating efficiency of high solar battery is the problem that whole solar energy industry all must be paid attention to.
In order to improve the photoelectric transformation efficiency of solaode, one of method is to increase reflecting layer, such as a kind of prior art
It is to add reflecting material or the direct pe reflecting layer that white is set, reflecting material or reflecting layer to be generally titanium dioxide in the film
One or more of titanium, ceramic fine bead, glass microballoon, zinc oxide, pearl essence mixture or make concaveconvex structure, reflectance
In 80-85%.Another kind of technology is using other reflecting layer, such as Chinese patent 201220537964.6, and back board structure is height
Reflection hydrolysis layer/barrier layer/base material/barrier layer/hydrolysis layer, each layer bonds by tack coat, substrate material for polyester or
Polyamide, barrier layer is Vingon or ethylene/vinyl alcohol copolymer, and hydrolysis layer is polyester or Merlon, high reflection
Hydrolysis layer is polyester or the Merlon that with the addition of inorganic material, and the reflectance of backboard is more than 98%.But this backboard
Weatherability is poor, and easy xanthochromia makes backboard become fragile, and back board structure is 5 layers, and each layer all passes through adhesive bonds, production cycle
Long, high cost, and because flame retardant rating is not high, exist excessive using caloric value under long term high temperature environment, cause the risk of burning.
Content of the invention
It is an object of the invention to provide a kind of solar cell backboard, it has high reflectance, good barrier and resistance to
Hou Xing, and good anti-flammability, stronger interlayer adhesion.
Technical scheme
A kind of solar cell backboard, including base material, reflecting layer and weathering layer, passes through adhesive between base material and reflecting layer
Layer bonding forms, and described reflecting layer is 75～175 μm of polycarbonate membrane, and its composition and parts by weight are:
100 parts of polycarbonate alloy resin；Titanium oxide microparticle 1-10 part；Inorganic particle or organic granular 2-18 part；Ultraviolet
Absorbent 0.2-0.8；Politef 0.1-1.2；Described titanium oxide microparticle is by the water of aluminum and/or silicon and oxide, amine compounds
Thing, polyol compound etc. are surface-treated；Described inorganic particle is silicon dioxide, titanium oxide, aluminium oxide, zinc oxide, sulfur
One of sour barium, Calcium Carbonate, zeolite, Kaolin, Pulvis Talci etc.；Described organic granular is acrylic acid seriess cross-linked particles or benzene second
Alkene system cross-linked particles；Polycarbonate alloy resin is Merlon and acrylonitrile-butadiene-styrene (ABS) alloy.
Above-mentioned solar cell backboard, described titanium oxide microparticle is the rutile-type two of 0.6-0.9 micron for mean diameter
Titanium oxide.
Above-mentioned solar cell backboard, described titanium oxide microparticle is flakey, spherical or unsetting.
Above-mentioned solar cell backboard, described base material is the mylar of 188～300 μ m-thick.
Above-mentioned solar cell backboard, described gluing oxidant layer is the polyurethane adhesive of 4～8 μ m-thick, acrylate is gluing
One of agent, polyvinyl acetate glue stick or epoxyn.
Above-mentioned solar cell backboard, described weathering layer is the Kynoar (pvdf) of 20～38 μ m-thick, ethylene-tetrafluoro
Being total to of ethylene copolymer (etfe), ethylene-chlorinated (ectfe), polyvinyl fluoride (pvf), vinylidene and tetrafluoroethene
In polymers (tfe) and vinylidene and the copolymer (hfp) of hexafluoropropene one or more.
Beneficial effect
The solar cell backboard of the present invention adopts Merlon reflecting layer/glue-line/polyester base material/glue-line/weathering layer
Structure, structure is simple, preparation process is simple.
The solar cell backboard of the present invention is by using Merlon reflecting layer, and employs Merlon in reflecting layer
With acrylonitrile-butadiene-styrene (ABS) plastic alloy so that the water vapor transmittance of solar cell backboard is less than 1.0g/m2.24h,
The solar cell backboard of the present invention by using Merlon reflecting layer, and using treated in reflecting layer
Titan oxide particles and the pore structure that comprises are so that the reflectance of solar cell backboard greatly improves, anti-to visible ray
The rate of penetrating reaches 100%.And treated titanium oxide carried the affine of fire retardant politef and polycarbonate alloy
Property, make the flame retardant effect of solar cell backboard more preferable.
The solar cell backboard of the present invention by using Merlon reflecting layer, and using polytetrafluoroethyl-ne in reflecting layer
Alkene, can make the anti-flammability of solar cell backboard be very significantly improved, and tested according to ul94, and flame retardant rating reaches v-0 level.
The reflectance of solar cell backboard reaches 100%, satisfactory mechanical property, the 90kwh of resistance to ultraviolet, hydrothermal aging
Non-yellowing non-brittle after 2500h, flame retardant rating reaches v-0 level.
Specific embodiment
The solar cell backboard of the present invention adopts Merlon reflecting layer/the first adhesive layer/polyester base material/the second bonding
The structure of layer/weathering layer, described Merlon reflecting layer is 75～175 μm of polycarbonate membrane, with polycarbonate alloy resin
100 parts of meters, its composition and parts by weight are: 100 parts of polycarbonate alloy resin；Titanium oxide microparticle 1-10 part；Inorganic particle or
Organic granular 2-18 part；Ultraviolet absorber 0.2-0.8；Politef 0.1-1.2；Described titanium oxide microparticle is by aluminum and/or silicon
Water and oxide, amines, polyol compound etc. be surface-treated, described inorganic particle be silicon dioxide, oxidation
One of titanium, aluminium oxide, zinc oxide, barium sulfate, Calcium Carbonate, zeolite, Kaolin, Pulvis Talci etc., described organic granular is third
Olefin(e) acid system cross-linked particles or polystyrene cross-linked particles.
Used in the present invention, polycarbonate alloy resin is that Merlon is closed with acrylonitrile-butadiene-styrene (ABS) (abs)
Gold, has good mechanical performance and heat stability, and molding shrinkage is little, and water absorption rate is low, and color is that milky, good luster etc. are excellent
Point, is commercially available prod, such as the bayblendmc-6500 of cycoloy eha, mobay chemical company of borg warmer company,
The c-30 of big Japanese ink company, the 8525a of Rhizoma Sparganii gas company, Supreme Being people are melted into t-1000, Yu Buxingchan company of company
The bayblend of cycoloy, bayer company of ex416, borg-warner company, the preferably bayblend of bayer company
fr-1439、1440、1441.
Used in the present invention, titanium oxide microparticle is in order that polycarbonate alloy resin has highly reflective, titanium oxide with
The form of micropowder uses, can be by chloridising or sulfuric acid process preparation, preferably chloridising.Used in the present invention, titanium oxide is micro-
Grain is not particularly limited to material, can be rutile-type or Detitanium-ore-type, considers from heat stability, weatherability angle, preferably gold
Red stone-type.Used in the present invention, titanium oxide microparticle is not particularly limited to the shape of microgranule, preferably use flakey, spherical,
Unsetting etc..In order to preferably play reflecting effect, the preferably mean diameter of the microgranule of titanium oxide is 0.6-0.9 μm about.Make
With titanium oxide microparticle be surface-treated through the water of aluminum and/or silicon and oxide, amines, polyol compound etc.,
By processing, titanium oxide microparticle can be dispersed in polycarbonate alloy resin composition, and the stability of dispersity
It is improved, and be also improved with the affinity of the fire retardant (fibril tetrafluoroethene) being added it is contemplated that titanium oxide
Reflexive, the tensile property of polycarbonate alloy resin, preferred polyol compound is surface-treated, and treating capacity is with respect to oxygen
The amount changing titanium is more suitable about 0.2-5% mass.In the present invention, titanium oxide microparticle is with respect to 100 parts of polycarbonate alloy trees
Fat is 1-10 part；The amount of titanium oxide is less than 1 part, and Merlon reflectance is less than 98%, and the reflectance of solar cell backboard reaches
Less than 100%, the amount of titanium oxide is higher than 10 parts it is not easy to be granulated by mixing extrusion.In order that solar energy backboard is each
Item performance is all good, preferably 3-7 part.
Inorganic particle used in the present invention or organic granular, are the granules incompatible with polycarbonate compositions, pass through
Stretching, due to the effect of boundary, produces bubble in polycarbonate film, bubble becomes the hole in reflecting layer, improves anti-
Penetrate rate.Described inorganic particle can be silicon dioxide, titanium oxide, aluminium oxide, zinc oxide, barium sulfate, Calcium Carbonate, zeolite, kaolinite
Soil, Pulvis Talci etc., described organic granular is acrylic acid seriess cross-linked particles or polystyrene cross-linked particles.Inorganic particle or organic
Grain can be used alone or several inorganic particle mixture or several organic granular mixture or several inorganic
Granule and the mixture of several organic granular, from the aspect of Financial cost and environment, preferably silicon dioxide and/or titanium oxide
And/or acrylic acid seriess cross-linked particles.Polycarbonate compositions are when being stretched, as long as the usage amount of these granules can make light
Voids content in reflecting layer is the inorganic particle or organic granular poly- carbonic acid with respect to 100 parts about 10-80% capacity
Ester alloy resin is 2-18 part, and less than 2 parts, the reflectance in Merlon reflecting layer is less than 100%, higher than 18 parts, carbonic ester group
Compound easy rupture of membranes when being stretched, preferably 5-11 part.
Described UV absorbent is BTA, phenyl salicylate, 2,4-DihydroxyBenzophenone, 2- hydroxyl -4-
One of methoxy benzophenone, Octabenzone, single benzoic acid resorcinol, preferably 2-
Hydroxyl -4- oxy-octyl benzophenone.
Described politef, has fibril ability, is that du pont company produces.Add polycarbonate alloy resin
In, the effect preventing melting drippage can be made it have as needed, there is high flame retardant.The mean molecule quantity of politef is excellent
Elect more than 500000 as, more preferably 600000-9000000.The addition of politef is 0.1-1.2 weight portion, then not
Harmful effect can be produced to resistance to impact and finished appearance, be not in pulsation phenomenon during mixing extrusion.Within the above range may be used
Preferably prevented from melting the effect of drippage, excellent anti-flammability can be obtained.
Base material
Described base material is polyethylene terephthalate (pet) layer, and thickness is 188～300 μm, is commercially available prod, such as
Dongguan Chang Pingbaoli Plastics Company, Shanghai Yuan Fang company, east insulant and Changzhou insulant etc., for cost and fire-retardant
Property consider, it is however preferred to have 188-250 μm of fire-retardant pet.
Weathering layer
Described weathering layer is Kynoar (pvdf), ethylene-tetrafluoroethylene copolymer (etfe), ethylene-trifluoro chloroethene
Alkene (ectfe), the copolymer (tfe) of polyvinyl fluoride (pvf), vinylidene and tetrafluoroethene and vinylidene and hexafluoropropene
One kind of copolymer (hfp) or blend, thickness is 20-38 μm, is commercially available prod, such as the etfe film of Asahi Glass, electrochemically
Pvdf film, the pvf film of Du Pont.
Adhesive layer
Described first adhesive layer, the second adhesive layer for thickness be 4-8 μm adhesive for polyurethane, acrylate adhesive,
One of polyvinyl acetate glue stick or epoxyn.Want to make flame retardant effect more preferably, can be in adhesive layer
Middle addition fire retardant.
The solar cell backboard of the present invention adopts following methods to prepare:
1. by mass percentage, by titanium oxide through the aluminum of 0.2-5% and/or the water of silicon and oxide, amines, many
First alcoholic compound etc. is surface-treated.
2. weigh other materials that reflecting layer needs, mixing in proportion, be dried, 100-120 DEG C of baking temperature, drying time
4-8h, baking temperature should not be too high, in order to avoid material melts and lumps, so that moisture is controlled below 0.02%, preferably
0.01%, otherwise, because pc hydrolysis can cause performance degradation, product surface has the defects such as melt flow trace and filamentary silver.
3. described material is added extruder, control 220-250 DEG C of extruder temperature, temperature is too high, product can be caused to become
Color, poor surface quality, temperature is too low, and material can not fully melt, and melt viscosity is high, and material fluidity difference is it is impossible to well
Molding.
4., through melt coarse filter, dosing pump, melt fine filter, static mixer after extruding, reach wide mouth head,
It is cast in chilling roller, stretching, through heat treatment, trimming, a face corona, winding obtains Merlon reflectance coating.
5. the one side in base material applies the first adhesive layer, dries, the corona surface in compound Merlon reflecting layer.
6. the another side in base material coats the second adhesive layer, dries, compound weathering layer, obtains solar battery back after ripening
Plate.Or coat fluorine-containing coat in the another side of base material, after ripening, obtain solar cell backboard.
The following examples are used for illustrating the present invention, but are not limited.
Embodiment 1
Take 100 parts of polycarbonate alloy resin bayblendmc-6500, through hydrated alumina process a diameter of
0.6 μm of 1 part of spherical rutile titanium oxide microparticle, 2 parts of Pulvis Talci, 0.2 part of phenyl salicylate, 0.1 part of mixing of politef,
It is dried, baking temperature is 100 DEG C, drying time is 8h, the moisture of measurement material is 0.018%.
Feed the mixture in single screw extrusion machine, extrusion temperature is 220 DEG C, through melt coarse filter, meter after extrusion
Amount pump, melt fine filter, static mixer, reach wide mouth head, are cast in chilling roller, and stretching through heat treatment, is cut
Side, a face corona, winding obtains 75 μm of Merlon reflectance coating.
Coat 4 μm of polyurethane adhesives in the one side of 188 μm of pet, compound 75 μm of Merlon reflecting layer after drying.?
The another side of 188 μm of pet coats 4 μm of polyurethane adhesives, and after drying, compound 20 μm of etfe film, obtains solar-electricity after ripening
Pond backboard
Embodiment 2
Take 100 parts of polycarbonate alloy resin c-30, a diameter of 0.6 μm of the spherical gold processing through silicon oxide hydrate
3 parts of red stone-type titanium oxide microparticle, silicon dioxide and 5 parts of zinc oxide hybrid particles, 0.4 part of ESCALOL 567,
0.6 part of mixing of politef, is dried, baking temperature is 100 DEG C, and drying time is 8h, and the moisture of measurement material exists
0.018%.
Feed the mixture in single screw extrusion machine, extrusion temperature is 220 DEG C, through melt coarse filter, meter after extrusion
Amount pump, melt fine filter, static mixer, reach wide mouth head, are cast in chilling roller, and stretching through heat treatment, is cut
Side, a face corona, winding obtains 75 μm of Merlon reflectance coating.
Coat 5 μm of acrylate adhesives in the one side of 250 μm of pet, compound 75 μm of Merlon reflecting layer after drying.
Coat 5 μm of acrylate adhesives in the another side of 250 μm of pet, after drying, compound 20 μm of ectfe film, obtains too after ripening
Sun can battery back-sheet.
Embodiment 3
Take 100 parts of polycarbonate alloy resin cycoloy eha, a diameter of 0.7 μm of the squama processing through triethanolamine
5 parts of lamellar rutile-type titanium oxide microparticle, 8 parts of acrylic acid seriess cross-linked particles, 0.6 part of BTA, 1.2 parts of politef
Mixing, is dried, and baking temperature is 110 DEG C, and drying time is 6h, records the moisture of material 0.015%.
Feed the mixture in single screw extrusion machine, extrusion temperature is 230 DEG C, through melt coarse filter, meter after extrusion
Amount pump, melt fine filter, static mixer, reach wide mouth head, are cast in chilling roller, and stretching through heat treatment, is cut
Side, a face corona, winding obtains 75 μm of Merlon reflectance coating.
Coat 6 μm of polyvinyl acetate sticks in the one side of 250 μm of pet, compound 75 μm of Merlon reflection after drying
Layer.Coat 6 μm of polyvinyl acetate glue sticks in the another side of 250 μm of pet, compound 25 μm of tfe film after drying, after ripening
To solar cell backboard
Embodiment 4
Take 100 parts of polycarbonate alloy resin cycoloyeha, a diameter of 0.7 μm of the squama processing through diisopropanolamine (DIPA)
7 parts of lamellar rutile-type titanium oxide microparticle, acrylic acid seriess cross-linked particles and 11 parts of polystyrene cross-linked particles mixture, salicylic acid
0.6 part of phenyl ester, 1.2 parts of mixing of politef, it is dried, baking temperature is 110 DEG C, drying time is 6h, the water of measurement material
Point content is 0.015%.
Feed the mixture in single screw extrusion machine, extrusion temperature is 240 DEG C, through melt coarse filter, meter after extrusion
Amount pump, melt fine filter, static mixer, reach wide mouth head, are cast in chilling roller, and stretching through heat treatment, is cut
Side, a face corona, winding obtains 100 μm of Merlon reflectance coating.
Coat 7 μm of polyurethane adhesives in the one side of 188 μm of pet, compound 100 μm of Merlon reflecting layer after drying.
Coat 7 μm of polyurethane adhesives in the another side of 188 μm of pet, after drying, compound 25 μm of pvdf film, obtains solar energy after ripening
Battery back-sheet
Embodiment 5
Take 100 parts of polycarbonate alloy resin t-1000, through diisopropanol by a diameter of 0.8 μm amorphous processing
10 parts of Titanium Dioxide Rutile Top grade microgranule, Kaolin and silicon oxide and 18 parts of acrylic acid seriess cross-linked particles mixture, 2- hydroxyl -4- first
0.8 part of epoxide benzophenone, 1.0 parts of mixing of politef, it is dried, baking temperature is 120 DEG C, drying time is 4h, measurement
The moisture of material is 0.01%.
Feed the mixture in single screw extrusion machine, extrusion temperature is 250 DEG C, through melt coarse filter, meter after extrusion
Amount pump, melt fine filter, static mixer, reach wide mouth head, are cast in chilling roller, and stretching through heat treatment, is cut
Side, a face corona, winding obtains 125 μm of Merlon reflectance coating.
Coat 8 μm of epoxyns in the one side of 250 μm of pet, compound 125 μm of Merlon reflection after drying
Layer.Coat 8 μm of epoxyns in the another side of 250 μm of pet, after drying, compound 25 μm of pvdf film, obtains after ripening
Solar cell backboard
Comparative example 1:
The polyurethane adhesive of 5 μm of coating in the one side of 250 μm of pet, compound etfe fluorine film after being dried, then in pet
Another side coats 5 μm of polyurethane adhesives, and after being dried, compound white pe film, ripening 4 days, obtain solar cell backboard.
Table 1 embodiment performance test data table
Embodiment 6
Take 100 parts of polycarbonate alloy resin bayblendfr-1439, through neopentyl glycol process a diameter of 0.6 micro-
3 parts of the spherical rutile titanium oxide microparticle of rice, 5 parts of silicon oxide particle, just new 0.2 part of the epoxide benzophenone of 2- hydroxyl -4-, poly- four
The mixing of 0.1 part of fluorothene, is dried, and baking temperature is 110 DEG C, and drying time is 8h, and the moisture of measurement material is 0.01%.
Feed the mixture in single screw extrusion machine, extrusion temperature is 220 DEG C, through melt coarse filter, meter after extrusion
Amount pump, melt fine filter, static mixer, reach wide mouth head, are cast in chilling roller, and stretching through heat treatment, is cut
Side, a face corona, winding obtains 75 μm of Merlon reflectance coating.
Coat 4 μm of acrylate adhesives in the one side of 188 μm of pet, compound 75 μm of Merlon reflecting layer after drying.
Coat 4 μm of acrylate adhesives in the another side of 188 μm of pet, after drying, compound 25 μm of pvdf film, obtains the sun after ripening
Can battery back-sheet
Embodiment 7
Take 100 parts of polycarbonate alloy resin bayblend1440, through trimethylolpropane process a diameter of 0.7 μm
5 parts of flakey Titanium Dioxide Rutile Top grade microgranule, 7 parts of titan oxide particles, just new 0.4 part of the epoxide benzophenone of 2- hydroxyl -4-, gather
0.6 part of mixing of tetrafluoroethene, is dried, baking temperature is 110 DEG C, and drying time is 8h, and the moisture of measurement material exists
0.01%.
Feed the mixture in single screw extrusion machine, extrusion temperature is 220 DEG C, through melt coarse filter, meter after extrusion
Amount pump, melt fine filter, static mixer, reach wide mouth head, are cast in chilling roller, and stretching through heat treatment, is cut
Side, a face corona, winding obtains 75 μm of Merlon reflectance coating.
Coat 5 μm of polyurethane adhesives in the one side of 250 μm of pet, compound 75 μm of Merlon reflecting layer after drying.?
The another side of 250 μm of pet coats 5 μm of polyurethane adhesives, and after drying, compound 20 μm of etfe film, obtains solar-electricity after ripening
Pond backboard.
Embodiment 8
Take 100 parts of polycarbonate alloy resin bayblend1441, through trimethylolethane process a diameter of 0.9 μm
7 parts of amorphous Titanium Dioxide Rutile Top grade microgranule, silicon dioxide and 11 parts of titanium dioxide mixture, 2- hydroxyl -4- n-octyloxy
0.8 part of benzophenone, 1.2 parts of mixing of politef, it is dried, baking temperature is 120 DEG C, drying time is 4h, measures material
Moisture 0.01%.
Feed the mixture in single screw extrusion machine, extrusion temperature is 250 DEG C, through melt coarse filter, meter after extrusion
Amount pump, melt fine filter, static mixer, reach wide mouth head, are cast in chilling roller, and stretching through heat treatment, is cut
Side, a face corona, winding obtains 175 μm of Merlon reflectance coating.
Coat 8 μm of epoxyns in the one side of 188 μm of pet, compound 175 μm of Merlon reflection after drying
Layer.Coat 8 μm of epoxyns in the another side of 188 μm of pet, after drying, compound 38 μm of pvf film, obtains too after ripening
Sun can battery back-sheet
Embodiment 9
Take 100 parts of polycarbonate alloy resin bayblend1440, a diameter of 0.9 μm of the nothing processing through neopentyl glycol
7 parts of Titanium Dioxide Rutile Top grade microgranule of setting, silicon dioxide and titanium dioxide and 11 parts of acrylic acid seriess cross-linked particles mixture, 2- hydroxyl
0.8 part of base -4- oxy-octyl benzophenone, 1.2 parts of mixing of politef, it is dried, baking temperature is 120 DEG C, drying time
For 6h, measure the moisture of material 0.009%.
Feed the mixture in single screw extrusion machine, extrusion temperature is 250 DEG C, through melt coarse filter, meter after extrusion
Amount pump, melt fine filter, static mixer, reach wide mouth head, are cast in chilling roller, and stretching through heat treatment, is cut
Side, a face corona, winding obtains 175 μm of Merlon reflectance coating.
Coat 8 μm of polyurethane adhesives in the one side of 250 μm of pet, compound 175 μm of Merlon reflecting layer after drying.
Coat 8 μm of polyurethane adhesives in the another side of 250 μm of pet, after drying, compound 38 μm of pvf film, obtains solar energy after ripening
Battery back-sheet.
Comparative example 2:
The polyurethane adhesive of 5 μm of coating in the one side of 250 μm of pet, compound etfe fluorine film after being dried, then in pet
Another side coats 5 μm of polyurethane adhesives, and after being dried, compound ordinary white polycarbonate membrane, ripening 4 days, obtain solaode
Backboard.
Table 2 embodiment performance test data table
Method of testing
Reflectance: according to gb/t 3979-2008 standard testing, produced using hunterlab company of the U.S.
Colorquest xe spectrophotometric color measurement instrument, under d65 light conditions, by integrating sphere d/8.Its reflectance of structured testing, reflectance
Data is the weighted mean of the reflectance every 10nm wavelength for the 400-1100, the energy distribution curve of the corresponding d65 light source of weights.
Yellowness index is tested: through standard ultra-vioket radiation, irradiation 90kwh, according to gb/t 7975, (paper and cardboard color are surveyed
Determine method diffusion/normal beam technique) use ws-sd leucometer to test the tone of aging sample weathering layer in front and back, calculate yellowness index.
Double eight or five tests: the hydrothermal aging proof box being produced using Shanghai ESPEC Environment Equipment Co., Ltd., in temperature
When degree, humidity are all 85, test 2000h.
Elongation at break and tensile strength: according to gb/t 1040-2006 standard, using the universal tensile test of Shenzhen Wanke
Machine test elongation at break and tensile strength.
Accelerated hydrothermal aging: using the damp and hot accelerated ageing case of Qing Sheng company, at 121 DEG C, humidity 100%, pressure is 2
50h is tested under atmospheric pressure.
Fire resistance is tested: ul94.
Claims (6)
1. a kind of solar cell backboard, including base material, reflecting layer and weathering layer, by gluing oxidant layer between base material and reflecting layer
Bonding forms it is characterised in that described reflecting layer is 75～175 μm of polycarbonate membrane, and its composition and parts by weight are:
100 parts of polycarbonate alloy resin
Titanium oxide microparticle 1-10 part
Inorganic particle or organic granular 2-18 part
Ultraviolet absorber 0.2-0.8
Politef 0.1-1.2；
Described titanium oxide microparticle carries out surface by the water of aluminum and/or silicon and oxide, amines, polyol compound etc.
Reason,
Described inorganic particle is in silicon dioxide, aluminium oxide, zinc oxide, barium sulfate, Calcium Carbonate, zeolite, Kaolin, Pulvis Talci etc.
One kind,
Described organic granular is acrylic acid seriess cross-linked particles or polystyrene cross-linked particles；
Polycarbonate alloy resin is Merlon and acrylonitrile-butadiene-styrene (ABS) alloy.
2. according to claim 1 solar cell backboard it is characterised in that described titanium oxide microparticle for mean diameter is
The rutile titanium dioxide of 0.6-0.9 micron.
3. according to claim 2 solar cell backboard it is characterised in that described titanium oxide microparticle is flakey, spherical
Or it is unsetting.
4. according to claim 3 solar cell backboard it is characterised in that described base material is the polyester of 188～300 μ m-thick
Thin film.
5. according to claim 4 solar cell backboard it is characterised in that described gluing oxidant layer is the poly- ammonia of 4～8 μ m-thick
One of ester gum stick, acrylate adhesive, polyvinyl acetate glue stick or epoxyn.
6. according to claim 5 solar cell backboard it is characterised in that described weathering layer be 20～38 μ m-thick poly- partially
Fluorothene (pvdf), ethylene-tetrafluoroethylene copolymer (etfe), ethylene-chlorinated (ectfe), polyvinyl fluoride (pvf),
The copolymer (tfe) of vinylidene and tetrafluoroethene and vinylidene are middle a kind of or several with the copolymer (hfp) of hexafluoropropene
Kind.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510136797.2A CN104835870B (en) | 2015-03-26 | 2015-03-26 | Solar cell backboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510136797.2A CN104835870B (en) | 2015-03-26 | 2015-03-26 | Solar cell backboard |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104835870A CN104835870A (en) | 2015-08-12 |
| CN104835870B true CN104835870B (en) | 2017-02-01 |
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| CN105140328B (en) * | 2015-08-26 | 2017-05-03 | 欧贝黎新能源科技股份有限公司 | Solar cell composite back membrane and preparation method thereof |
| CN105118881B (en) * | 2015-09-01 | 2017-08-11 | 北京铂阳顶荣光伏科技有限公司 | A kind of solar cell package cephacoria and its application |
| CN105590977A (en) * | 2015-12-18 | 2016-05-18 | 常熟高嘉能源科技有限公司 | Lightweight photovoltaic module |
| CN105948528B (en) * | 2016-04-25 | 2019-03-19 | 上海西源新能源技术有限公司 | A kind of high reflection coated glass and preparation method thereof |
| CN106024947A (en) * | 2016-07-25 | 2016-10-12 | 无锡中洁能源技术有限公司 | Solar backboard structure with high conversion efficiency |
| CN106449822B (en) * | 2016-11-22 | 2017-12-05 | 浙江昱辉阳光能源江苏有限公司 | A kind of highly-reflective coating high power solar double-glass assemblies |
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| CN104022173A (en) * | 2014-06-20 | 2014-09-03 | 中天光伏材料有限公司 | Integrated back board for high-reflectivity solar cells and manufacturing method thereof |
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| CN103022192A (en) * | 2012-10-18 | 2013-04-03 | 宁波长阳科技有限公司 | High reflectance solar cell back-plane film, preparation method of high reflectance solar cell back-plane film, and solar cell |
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