CN103441170B - Solar energy backboard, encapsulating structure and solar module - Google Patents
Solar energy backboard, encapsulating structure and solar module Download PDFInfo
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- Y02E10/00—Energy generation through renewable energy sources
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Abstract
The invention discloses a kind of solar energy backboard, encapsulating structure and solar module, described solar energy backboard comprises adhesion layer, body layer and the layer of resistance to ultraviolet, described body layer is between described adhesion layer and the described layer of resistance to ultraviolet, described adhesion layer is Hai Hu island clad structure, described Hai Hu island clad structure comprises some island unit formed mutually by the material of main part of body layer, some lake unit formed mutually by bulking agent material and the extra large unit formed mutually by attachment material, wherein, described extra large unit coated described lake unit, unit coated described island, described lake unit, the present invention effectively guarantees to possess excellent adhesion property between solar energy backboard and potting resin, and therefore the present invention is especially applicable to being applied to the solar energy backboard poor with potting resin adhesion property.
Description
Technical field
The invention belongs to photovoltaic and manufacture field, be specifically related to a kind of solar energy backboard, encapsulating structure and solar module, be especially applicable to being applied to the solar energy backboard poor with potting resin adhesion property.
Background technology
Along with the development of modern industry, global energy crisis and atmosphere polluting problem become increasingly conspicuous, and therefore people replace traditional energy gradually in the urgent need to finding regenerative resource.And solar energy is as the regenerative resource of core, therefore in recent years, photovoltaic field more and more comes into one's own, and achieves and develop rapidly.Wherein, solar module is as the core texture energy of sunlight directly being changed into electric energy; its process structure mainly comprises: first multiple solar battery sheet is carried out series and parallel connection, then the solar battery sheet completing series and parallel connection is carried out packaging protection.Encapsulating structure mainly comprises: transparency carrier; general employing glass is made; for covering the sensitive surface of solar battery sheet; adopt that backboard is protected, the back side of support solar cell piece, adopt potting resin (being generally EVA plastics) to be filled in transparency carrier, gap between backboard and solar battery sheet simultaneously.Because solar energy backboard need be chronically exposed in outdoor environment, (instructions for use of current business solar module is 25 years), therefore it should possess high mechanical properties, good dimensional stability, anti-flammability, high-insulation and with outside the basic function of the high tack of potting resin, also should have very excellent, the permanent weather resistance comprised as heat-resisting, hydrolysis and resistance to ultraviolet etc., the test in useful life that solar module reaches 25 years could be met.
Solar energy backboard conventional in prior art mainly comprises three kinds: TPT type solar energy backboard, TPE type solar energy backboard and PPP type solar energy backboard.Wherein, TPT type solar energy backboard is after the biaxial tension PET film double spread adhesive for polyurethane by one deck 250 μm; at the PVF film of the two sides of PET film difference compound 30 μm; PVF film has superior outdoor environment weatherability (can reach more than 40 years); available protecting is as the PET of backboard main material, but the material cost of PVF is high.Wherein, TPE type solar energy backboard is after the biaxial tension PET film double spread adhesive for polyurethane by one deck 250 μm, at the PVF film of the lower surface compound 30 μm of PET film, and the PE of surface recombination 50 μm or eva film thereon, TPE type solar energy backboard has good weatherability, and relative to TPT type solar energy backboard, its cost of manufacture is lower, is also to use more type in existing market; Wherein, PPP solar energy backboard is after the biaxial tension PET film double spread adhesive for polyurethane by one deck 250 μm, in the hydrolysis PET film of the lower surface compound 50 μm of PET film, and the PE film of surface recombination 50 μm thereon, PPP type solar energy backboard cost is minimum, but its weatherability, not as TPT type solar energy backboard and TPE type solar energy backboard, therefore makes land used less in existing market.
From finding out above, the material of main part that current solar energy backboard adopts is PET, in order to guarantee that solar energy backboard possesses high mechanical properties, good dimensional stability, anti-flammability and high-insulation, but owing to containing a large amount of ester groups in PET molecular backbone, good compatibility is had with glassware for drinking water, the plasticising of easy generation water, even if the moisture of trace also can cause the degraded of PET molecular backbone, thus cause the mechanical performance of PET to be damaged, temperature then can make above-mentioned degradation process obviously accelerate when raising, therefore water and heat are the main causes causing PET material mechanical strength sharply to decline.In addition, ultra-violet radiation also can make the molecular weight of PET, strength and elongation significantly declines, and degree of crystallinity increases, thus the mechanical performance of PET material is damaged.And generally only have 30 μm due to the protective layer thickness being positioned at pet layer lower surface in solar energy backboard; in long outdoor overall situation uses; aqueous vapor and oxygen still can be penetrated into by lower surface protective layer and be positioned at middle pet layer; cause pet layer degraded, deterioration; final and potting resin departs from; make it lose efficacy to the protection of solar battery sheet and support function, and then cause decrease of power generation and even the solar module global failure of solar module.
Therefore be necessary to propose to improve to existing solar energy backboard, guaranteeing that it possesses high mechanical properties, good dimensional stability, anti-flammability, high-insulation and with under the prerequisite of the high tack of potting resin, also possess excellence, permanent comprising as heat-resisting, hydrolysis and resistance to ultraviolet etc. weather resistance simultaneously.
Current prior art, the Chinese invention patent being CN102414838A as publication number discloses employing PPE material to replace the material of main part of PET material as solar energy backboard of prior art, although heat-resisting, technical problem that anti-hydrolytic performance is poor that this patented technology avoids that existing conventional solar energy backboard exists, but in PET material except there is the poor technical problem of ultra-violet resistance energy, also there is the technical problem that itself and potting resin tack are poor, this makes PPE material be subject to larger restriction as the material of main part of solar energy backboard.
Therefore comprehensive above content, still solves above technical problem in the urgent need to seeking optimisation technique scheme.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of solar energy backboard, encapsulating structure and solar module, effectively guarantee to possess excellent adhesion property between solar energy backboard and potting resin, therefore the present invention is especially applicable to being applied to the solar energy backboard poor with potting resin adhesion property.
To achieve these goals, technical scheme provided by the invention is as follows:
A kind of solar energy backboard, described solar energy backboard comprises adhesion layer, body layer and the layer of resistance to ultraviolet, described body layer is between described adhesion layer and the described layer of resistance to ultraviolet, described adhesion layer is Hai Hu island clad structure, described Hai Hu island clad structure comprises some the island unit, some lake unit formed mutually by bulking agent material and the extra large unit formed mutually by attachment material that are formed mutually by the material of main part of body layer, wherein, described extra large unit coated described lake unit, unit coated described island, described lake unit.
Preferably, contain some microballons in the described layer of resistance to ultraviolet/and described adhesion layer, the particle size range of described microballon is 0.5-10 μm.
Preferably, the thickness of described adhesion layer is 0.01-0.1mm, and the thickness of described body layer is 0.1-0.3mm, and the outer field thickness of described resistance to purple is 0.01-0.075mm.
Preferably, described solar energy backboard is coextrusion mold structure.
Preferably, the material of main part of described body layer is PPE resin; Described body layer specifically comprises:
The PPE resin of 40-95wt%;
The ASA resin of 5-40wt%.
Preferably, the described layer of resistance to ultraviolet comprises the resistance to UV resin of 40-90wt% and the uvioresistant additive of 5-40wt%, described resistance to UV resin be selected from fluorine resin, PA resin and PET resin any one, described uvioresistant additive is selected from any one or a few the mixing in ASA resin, Chinese white, black pigment and microballon.
Preferably, an encapsulating structure for solar module, comprises glass, potting resin and solar energy backboard, wherein, described solar energy backboard adopts solar energy backboard as above, and the body layer of described solar energy backboard is attached on described potting resin by described adhesion layer.
Preferably, described adhesion layer comprises polyolefin resin, the PPE resin of 20-50wt%, the bulking agent of 10-40wt% of 20-70wt%.
Preferably, described adhesion layer comprises the uvioresistant additive of 5-30wt% and/or the anti-deformation additive of 5-30wt% further, described uvioresistant additive is selected from any one or a few the mixing in ASA resin, Chinese white, black pigment and microballon, and described anti-deformation additive is the rubber resin with nucleocapsid structure.
Preferably, a kind of solar module, comprise some solar battery sheets that mutual series and parallel connects, and for encapsulating the encapsulating structure of described solar battery sheet, wherein, described encapsulating structure adopts encapsulating structure as above.
The present invention proposes solar energy backboard to be set to comprise adhesion layer, body layer and the outer field three-decker of resistance to purple, body layer is between adhesion layer and the layer of resistance to ultraviolet, adhesion layer is Hai Hu island clad structure, Hai Hu island clad structure comprises some island unit formed mutually by the material of main part of body layer, some lake unit formed mutually by bulking agent material and the extra large unit formed mutually by attachment material, wherein, unit coated lake, sea unit, lake unit coated island unit, because the extra large unit that formed mutually by attachment material in adhesion layer and potting resin have very good tack, the island unit formed mutually by the material of main part of body layer in adhesion layer has very good tack with body layer again, carry out compatible between the island unit that the lake unit simultaneously formed mutually by bulking agent material in adhesion layer makes again the extra large unit that formed mutually by attachment material and the material of main part by body layer be formed mutually very well, final solar energy backboard and potting resin realize very good attachment, namely effectively guarantee between solar energy backboard and potting resin, to possess excellent adhesion property.
The present invention further optimally, because PPE resin is except possessing high mechanical properties, good dimensional stability, outside anti-flammability and high-insulation, also possess the heat-resisting of excellence, anti-hydrolytic performance, but as during solar energy back veneer material except there is the defect of the mutual compatibility difference between itself and potting resin (being generally EVA resin), also there is the technical problem of ultra-violet resistance difference, the present invention also proposes the core constituent adopting the blend of PPE resin and ASA resin as body layer in solar energy backboard further, this is because the applicant finds through lot of experiments with after analyzing, ASA resin has extremely superior uvioresistant performance, when it and PPE resin carry out blended after, the anti-ultraviolet ageing performance of PPE in solar energy back plate main body layer can be increased substantially, thus overcome smoothly PPE materials application in solar energy backboard time there is the technical barrier of ultra-violet resistance difference, the application of effective promotion PPE material in solar energy backboard.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, the accompanying drawing that the following describes is only some embodiments recorded in the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the cross section structure schematic diagram of the solar energy backboard under the specific embodiment of the invention;
Fig. 2 is the part-structure enlarged drawing of adhesion layer 110 in Fig. 1;
Fig. 3 is the cross section structure schematic diagram of the solar module under the specific embodiment of the invention.
Embodiment
The embodiment of the invention discloses a kind of solar energy backboard, solar energy backboard comprises adhesion layer, body layer and the layer of resistance to ultraviolet, body layer is between adhesion layer and the layer of resistance to ultraviolet, adhesion layer is Hai Hu island clad structure, Hai Hu island clad structure comprises some the island unit, some lake unit formed mutually by bulking agent material and the extra large unit formed mutually by attachment material that are formed mutually by the material of main part of body layer, wherein, extra large unit coated lake unit, lake unit coated island unit.
The embodiment of the invention also discloses a kind of encapsulating structure of solar module, comprise glass, potting resin and solar energy backboard, wherein, solar energy backboard adopts solar energy backboard as above, and the body layer of solar energy backboard is attached on potting resin by adhesion layer.
The embodiment of the invention also discloses a kind of solar module, comprise some solar battery sheets that mutual series and parallel connects, and for encapsulating the encapsulating structure of solar battery sheet, wherein, encapsulating structure adopting encapsulating structure as above.
The embodiment of the present invention proposes solar energy backboard to be set to comprise adhesion layer, body layer and the outer field three-decker of resistance to purple, body layer is between adhesion layer and the layer of resistance to ultraviolet, adhesion layer is Hai Hu island clad structure, Hai Hu island clad structure comprises some island unit formed mutually by the material of main part of body layer, some lake unit formed mutually by bulking agent material and the extra large unit formed mutually by attachment material, wherein, unit coated lake, sea unit, lake unit coated island unit, because the extra large unit that formed mutually by attachment material in adhesion layer and potting resin have very good tack, the island unit formed mutually by the material of main part of body layer in adhesion layer has very good tack with body layer again, carry out compatible between the island unit that the lake unit simultaneously formed mutually by bulking agent material in adhesion layer makes again the extra large unit that formed mutually by attachment material and the material of main part by body layer be formed mutually very well, final solar energy backboard and potting resin realize very good attachment, namely effectively guarantee between solar energy backboard and potting resin, to possess excellent adhesion property.
Technical scheme in the present invention is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, should belong to the scope of protection of the invention.
Shown in Figure 1, a kind of solar energy backboard of solar module, solar energy backboard 100 comprises adhesion layer 110, body layer 120 and the layer of resistance to ultraviolet 130, body layer 120 is between adhesion layer 110 and the layer of resistance to ultraviolet 130, and adhesion layer 110 is attached to the potting resin 200 of solar module 10 for body layer 120; Particularly, potting resin 200 is EVA resin.Specifically preferably, the thickness of body layer 120 is 0.1-0.3mm, and the thickness of adhesion layer 110 is 0.01-0.1mm, and the thickness of the layer of resistance to ultraviolet 130 is 0.01-0.075mm.
High mechanical properties, good dimensional stability, anti-flammability, high-insulation and with under the prerequisite of the high tack of potting resin is not only possessed in order to ensure solar energy backboard in the embodiment of the present invention, also possess excellence simultaneously, permanent comprise as heat-resisting, hydrolysis and resistance to ultraviolet etc. weather resistance, further particularly, in the present embodiment, body layer 120 comprises: the PPE resin of 40-95wt%; The ASA resin of 5-40wt%.
Because technological core of the present invention is that body layer adopts the blend of PPE resin and ASA resin, and a kind of adhesion layer with superior adhesion effect is proposed, and those skilled in the art are based on the technological know-how level of self, do not need to pay creative work just can know, in order to improve the various performances needed for solar energy backboard further, under the prerequisite not affecting the technology of the present invention effect, can other be selected to add material according to self actual demand on the basis of technology contents disclosed in the present invention, therefore not concrete expansion one by one repeats herein, and suitably to quote publication number be that the Chinese invention patent of CN102414838A exemplifies explanation.
In order to improve resistance to impact and the processing characteristics of solar energy backboard 100, so that comprising of adopting during following process is extruded, the thermoplastic manufacturing procedures such as injection moulding, preferably, in the present embodiment, body layer 120 comprises the interpolation resin of 0-20wt% further, add resin and be selected from PS resin, PP resin, PA resin, HIPS resin, any one or a few mixing in PE resin and EVA resin, these add resin can provide enough toughness for solar energy backboard 100 raw material, so that carry out following process as above, the resin described in [0105] linkage section between the Chinese invention patent Instructions Page 9-10 pages that additive also can be publication number is CN102414838A, therefore no longer specifically repeat.
Particularly, in the present embodiment, the concrete material of PPE resin can be the technology contents recorded in Chinese invention patent Instructions Page 9 [0099] Duan Zhi [0101] section of CN102414838A see publication number, can certainly adopt other any one known PPE resin.Wherein, preferably, the PPE resin in embodiment of the present invention is grafted with the copolymer of styrene compound, effectively can guarantee the good blended property of PPE resin and ASA resin in the embodiment of the present invention further; Further particularly, styrene compound can be styrene, AMS, vinyltoluene, chlorostyrene etc., natch, in other embodiments, the copolymer of styrene compound also can be the copolymer adopting other concrete styrene compound copolymerization.
Further specifically preferably, in the present embodiment, other functional additive can also be added: such as at body layer 120, in order to improve the anti-flammability of solar energy backboard 100 further, the fire retardant being applicable to mass parts can be added in body layer 120, the concrete material of fire retardant and mass parts can be the technology contents recorded in Chinese invention patent Instructions Page 10 [0106] Duan Zhi [0109] section of CN102414838A see publication number equally, can certainly adopt other any one known fire retardant; Such as, in order to improve the antioxidant effect of solar energy backboard 100 in the course of processing and Long-Time Service further, can add the antioxidant being applicable to mass parts in body layer 120, the concrete material of antioxidant and mass parts can be the technology contents recorded in Chinese invention patent specification the 40th page of [0444] Duan Zhi [0448] section of CN102414838A see publication number equally; Such as, in order to improve the thermal stability of solar energy backboard 100 in the course of processing and Long-Time Service further, can add the heat stabilizer being applicable to mass parts in body layer 120, its concrete material and mass parts can be the related content recorded in the Chinese invention patent specification of CN102414838A see publication number equally; Such as, for the ease of extruding comprising of adopting during solar energy backboard 100 following process, the thermoplastic manufacturing procedure such as injection moulding, can add the plasticizer being applicable to mass parts in body layer 120, plasticizer can be oil, low molecular weight polyethylene, epoxidised soybean oil, polyethylene glycol, fatty acid ester etc.Such as, in order to improve the resistance to ultraviolet effect of solar energy backboard 100 further, the ultraviolet absorber of applicable mass parts can be added or/and UV stabilizer in body layer 120, its concrete material and mass parts can be the technology contents recorded in Chinese invention patent specification the 25th page of [0283] Duan Zhi 29 page of [0323] section of CN102414838A see publication number equally, the Chinese white or black pigment that are applicable to mass parts can certainly be added in body layer 120, more preferably, Chinese white adopts titanium dioxide, black pigment adopts carbon black, can certainly see the technology contents recorded in CN102414838A patent specification the 14th page of [0146] Duan Zhi [0147] section.
Can also as described in CN102414838A patent specification the 10th page of [0110] section, as long as under the prerequisite of impact core technology effect of the present invention, the additive of other composition can also be added according to actual needs: such as, for improving the inorganic filling material such as carbon filler, glass filler, talcum, mica of thermal endurance and mechanical strength further.
In order to overcome PPE material in body layer 120 and EVA resin 200 exists the not good defect of mutual compatibility, preferably, the embodiment of the present invention additionally provides and a kind ofly makes better superior adhesion layer 110 structure of the adhesion effect between body layer 120 and EVA resin 200, particularly, please shown in Figure 2 further, adhesion layer 110 is Hai Hu island clad structure, Hai Hu island clad structure comprises some island unit 111 formed mutually by the material of main part of body layer 120, some lake unit 112 formed mutually by bulking agent material and the extra large unit 113 formed mutually by attachment material, wherein, unit 113 coated lake, sea unit 112, lake unit 112 coated island unit 111, further particularly, adhesion layer 110 comprises polyolefin resin, the PPE resin of 20-50wt%, the bulking agent of 10-40wt% of 20-70wt%, wherein, polyolefin resin is attachment material, PPE resin is the material of main part of body layer 120, because the extra large unit 113 formed mutually by polyolefin resin in adhesion layer 110 has very good tack with EVA resin 200, the island unit 111 formed by PPE resin-phase in adhesion layer 110 has very good tack with body layer 120 again, the lake unit 112 simultaneously formed mutually by bulking agent material in adhesion layer 110 makes again to carry out very well between the extra large unit 113 that formed mutually by polyolefin resin and the island unit 111 formed by PPE resin-phase compatible, final solar energy backboard 100 realizes very good attachment with EVA resin 200.Particularly, the concrete composition of polyolefin resin can see the technology contents recorded in CN102414838A patent specification the 11st page of [0117] section.
Bulking agent involved in the present embodiment can claim compatibilizing agent again, refers to by means of intermolecular bonding force, impels the not good polyolefin resin of compatibility and PPE resin to be combined in one well, and then obtains the auxiliary agent of stable blend.Particularly, in the present embodiment, bulking agent can be the block identical with the chemical composition of PPE resin with polyolefin resin or graft copolymer, also can be different from the chemical composition of polyolefin resin and PPE resin but can distinguish block compatible with it or graft copolymer.
Further particularly, bulking agent can adopt cyclic acid anhydride type, carboxylic acid type, epoxy type, oxazoline type, imide-type and isocyanate-based polymer bulking agents, low molecule type bulking agent can also be adopted, existing any one can certainly be adopted to be beneficial to the bulking agent that polyolefin resin and PPE resin carry out mutual tolerance, and these believe that those skilled in the art carrys out specifically to select the composition of bulking agent according to the actual requirements.
More preferably, adhesion layer 110 comprises the uvioresistant additive of 5-30wt% and/or the anti-deformation additive of 5-30wt% further, uvioresistant additive is selected from any one or a few the mixing in ASA resin, Chinese white, black pigment and microballon, and anti-deformation additive is the rubber resin with nucleocapsid structure.More preferably, in the present embodiment, Chinese white adopts titanium dioxide, and black pigment adopts carbon black, can certainly see the technology contents recorded in CN102414838A patent specification the 14th page of [0146] Duan Zhi [0147] section.Further particularly, the rubber resin with nucleocapsid structure can be styrene, acrylic acid, organosilicon, butadiene are monomer unitary or multiple copolymer.
Specifically preferably, the layer of resistance to ultraviolet 130 comprises the PPE resin of the resistance to UV resin of 40-90wt%, the uvioresistant additive of 5-40wt% and 5-40wt%, resistance to UV resin be selected from fluorine resin, PA resin and PET resin any one, more preferably, resistance to UV resin is PA resin or PET resin, and the subsequent recovery being beneficial to solar energy backboard 100 material utilizes.Uvioresistant additive is selected from any one or a few the mixing in ASA resin, Chinese white, black pigment and microballon.More preferably, in the present embodiment, Chinese white adopts titanium dioxide, and black pigment adopts carbon black, can certainly see the technology contents recorded in CN102414838A patent specification the 14th page of [0146] Duan Zhi [0147] section.
In order to improve the ultra-violet resistance of the layer of resistance to ultraviolet 130 and adhesion layer 110 further, preferably, in the present embodiment, some microballons (figure does not specifically illustrate) are contained in the layer of resistance to ultraviolet 130 and adhesion layer 110, the particle size range of microballon is 0.5-10 μm, microballon can play very good reflecting effect to ultraviolet, thus can further improve the ultra-violet resistance of the layer of resistance to ultraviolet 130 and adhesion layer 110 in the present embodiment.
Preferably, to adopt coextruding method or rolling process or cladding process to prepare shaping for solar energy backboard 100.Particularly, coextruding method, rolling process and cladding process all can adopt any one known method existing shaping to prepare, natch, and also can see the correlation technique content recorded in CN102414838A patent specification.More preferably, in the present embodiment, it is shaping that solar energy backboard 100 adopts coextruding method to prepare, obtain coextrusion mold structure, avoid the bonding agent adopted in rolling process, therefore the recovery being beneficial to solar energy backboard 100 material uses, and the solar energy backboard 100 of current existing routine is owing to being mostly fluorine material, and adopt bonding agent to carry out calendering formation, therefore solar module is after reaching useful life (being generally 25 years), multiplex landfill disposal, recycles not only bad for raw-material, also has a strong impact on environment.
Further, because PPE resin has high rigidity, and toughness is poor, thus be usually difficult to carry out coextruding heat and prepare processing and forming, and the ASA resin that the embodiment of the present invention provides is owing to possessing high tenacity (being elongation at break), the fluidity of molten adding man-hour at thermoplastic is very excellent, what therefore the embodiment of the present invention provided can be particularly suitable for carrying out coextruding heat by the body layer of PPE resin and ASA mixed with resin prepares processing and forming, the good characteristic that the Chinese invention patent of this to be publication number be equally CN102414838A does not possess, the technical scheme of the embodiment of the present invention is simple, and effectively facilitate the good commercial application of the embodiment of the present invention, and follow-up recycling.
In order to save word length herein, this patent mainly have employed its chemical substance adopted and simplifies title sign, and concrete corresponding namelist asks for an interview following table 1:
The corresponding namelist of table 1
| Simplify title | Full name (English and/or Chinese) |
| EVA | Ethylene/vinyl acetate, ethylene-vinyl acetate copolymer |
| PET | Polyethylene terephthalate, poly terephthalic acid class plastics |
| PVF | Polyvinyl fluoride, polyvinyl fluoride |
| PE | Polyethylene, polyethylene |
| PPE | Polyphenylene oxide |
| ASA | Acrylonitrile-styrene-acrylate, acrylonitrile/styrene |
| PS | Polystyrene, polystyrene |
| PP | Polypropylene, polypropylene |
| PA | Polyamide, polyamide (also known as nylon nylon) |
| HIPS | High Impact Polystyrence, high impact polystyrene |
In order to verify the technique effect (specifically referring to following table 2) of the tack of the weatherability of solar energy backboard 100 of the present invention and itself and EVA resin 200 further, the present invention exemplifies following specific embodiment:
Embodiment 1:
Shown in Figure 1, a kind of solar energy backboard 100 of solar module, solar energy backboard 100 comprises adhesion layer 110, body layer 120 and the layer of resistance to ultraviolet 130, body layer 120 is between adhesion layer 110 and the layer of resistance to ultraviolet 130, adhesion layer 110 is attached to the EVA resin 200 of solar module for body layer 120, the thickness of body layer 120 is 0.2mm, and the thickness of adhesion layer 110 is 0.06mm, and the thickness of the layer of resistance to ultraviolet 130 is 0.04mm.
Wherein, adhesion layer 110 is Hai Hu island clad structure, Hai Hu island clad structure comprises some the island unit, some lake unit formed mutually by bulking agent material and the extra large unit formed mutually by attachment material that are formed mutually by the material of main part of body layer 120, wherein, unit coated lake, sea unit, lake unit coated island unit.
Body layer 120 comprises: the PPE resin of 75wt%, the ASA resin of 10wt%, 5wt% by the plasticizer of the titanium dioxide of the interpolation resin of PS resin, PP resin and PA mixed with resin, 2.5wt%, the antioxidant of 2.5wt%, the heat stabilizer of 3wt% and 2wt%.
Adhesion layer 110 comprises: the rubber resin with nucleocapsid structure of the bulking agent of the polyolefin resin of 35wt%, the PPE resin of 20wt%, 20wt%, the ASA resin of 10wt%, the titanium dioxide of 6wt%, the microballon of 5wt% and 4wt%, wherein, the particle size range of microballon is 0.5-10 μm.
The layer of resistance to ultraviolet 130 comprises: the PPE resin of the PET resin of 60wt%, the ASA resin of 15wt%, the carbon black of 8wt%, the microballon of 12wt% and 5wt%, and wherein, the particle size range of microballon is 0.5-10 μm.
In the present embodiment, solar energy backboard 100 adopts the coextruding method belonging to known technology to prepare shaping, therefore obtains the coextrusion mold structure of three layers of compound, is conducive to follow-up MAT'L recycling.
Embodiment 2:
All the other are identical with above-described embodiment 1, difference is only, the body layer 120 in the present embodiment 2 comprises: the plasticizer of the interpolation resin mixed by PS resin, PP resin and EVA resin of the PPE resin of 70wt%, the ASA resin of 15wt%, 5wt%, the titanium dioxide of 2.5wt%, the antioxidant of 2.5wt%, the heat stabilizer of 3wt% and 2wt%.
Embodiment 3:
All the other are identical with above-described embodiment 1, difference is only, the body layer 120 in the present embodiment 3 comprises: the PPE resin of 80wt%, the ASA resin of 5wt%, 5wt% by the plasticizer of the titanium dioxide of the interpolation resin of PS resin, PP resin and PE mixed with resin, 2.5wt%, the antioxidant of 2.5wt%, the heat stabilizer of 3wt% and 2wt%.
Embodiment 4:
All the other are identical with above-described embodiment 1, and difference is only, the body layer 120 in the present embodiment 4 comprises: the PPE resin of 90wt%, the ASA resin of 7wt%, 3wt% by the interpolation resin of HIPS resin, PP resin and PA mixed with resin.
Embodiment 5:
All the other are identical with above-described embodiment 1, and difference is only, the body layer 120 in the present embodiment 5 comprises: the PPE resin of 95wt%, the ASA resin of 5wt%.
Embodiment 6:
All the other are identical with above-described embodiment 1, difference is only, the body layer 120 in the present embodiment 6 comprises: the PPE resin of 60wt%, the ASA resin of 25wt%, 5wt% by the plasticizer of the titanium dioxide of the interpolation resin of PS resin, PP resin, PA resin and PE mixed with resin, 2.5wt%, the antioxidant of 2.5wt%, the heat stabilizer of 3wt% and 2wt%.
Embodiment 7:
All the other are identical with above-described embodiment 1, difference is only, the body layer 120 in the present embodiment 7 comprises: the PPE resin of 50wt%, the ASA resin of 25wt%, 5wt% by the plasticizer of the titanium dioxide of the interpolation resin of HIPS resin, PP resin and PA mixed with resin, 5wt%, the antioxidant of 5wt%, the heat stabilizer of 5wt% and 5wt%.
Embodiment 8:
All the other are identical with above-described embodiment 1, difference is only, the body layer 120 in the present embodiment 8 comprises: the plasticizer of the interpolation resin mixed by PS resin, PP resin, PA resin, PE resin and EVA resin of the PPE resin of 40wt%, the ASA resin of 40wt%, 10wt%, the titanium dioxide of 2.5wt%, the antioxidant of 2.5wt%, the heat stabilizer of 3wt% and 2wt%.
Embodiment 9:
All the other are identical with above-described embodiment 1, and difference is only: the body layer 120 in the present embodiment 9 comprises: the PPE resin of 75wt%, 15wt% by the plasticizer of the titanium dioxide of the interpolation resin of PS resin, PP resin and PA mixed with resin, 2.5wt%, the antioxidant of 2.5wt%, the heat stabilizer of 3wt% and 2wt%.
Embodiment 10:
All the other are identical with above-described embodiment 1, and difference is only: the body layer 120 in the present embodiment 10 comprises: the PPE resin of 75wt%, 10wt% by the plasticizer of the titanium dioxide of the interpolation resin of PS resin, PP resin and PA mixed with resin, 5wt%, the antioxidant of 5wt%, the heat stabilizer of 3wt% and 2wt%.
Comparative example 1:
Adopt existing business-like TPT type solar energy backboard.
Comparative example 2:
Adopt existing business-like TPE type solar energy backboard.
Comparative example 3:
All the other are identical with the embodiment of the present invention 1, difference is only: the adhesion layer in this comparative example 3 comprises: the rubber resin with nucleocapsid structure of the polyolefin resin of 75wt%, the ASA resin of 10wt%, the titanium dioxide of 6wt%, the microballon of 5wt% and 4wt%, wherein, the particle size range of microballon is 0.5-10 μm.
Comparative example 4:
All the other are identical with the embodiment of the present invention 1, and difference is only: the solar energy backboard in this comparative example 4 comprises body layer and the layer of resistance to ultraviolet; The thickness of body layer is 0.2mm, and the outer field thickness of resistance to purple is 0.04mm.
Table 2 implementation result compares
Concrete method of testing illustrates:
(1), thermal endurance, hydrolytic resistance
It is under the environment of 85 DEG C that the solar energy backboard sample obtained by coextrusion mold is positioned over temperature, and relative humidity is place 3000 hours in the environment of 85%, observes the change of solar energy backboard.
(2), ultra-violet resistance
It is place 300 hours in the ultraviolet lighting environment of 200-400nm that the solar energy backboard sample obtained by coextrusion mold is positioned over wave-length coverage, observes the change of solar energy backboard.
(3), with the tack of EVA resin
Adhesion layer in the solar energy backboard sample obtain coextrusion mold carries out 180 ° of strippings, record peeling force, wherein:
√: represent peel strength at more than 40N/15mm;
Δ: represent peel strength between 10-40N/15mm;
×: represent peel strength at below 10N/15mm.
Shown in Figure 3, a kind of encapsulating structure of solar module, comprise glass 300, potting resin 200 and solar energy backboard 100, wherein, solar energy backboard 100 adopts solar energy backboard 100 as above, and the body layer 120 of solar energy backboard 100 is attached on potting resin 200 by adhesion layer 110.
Shown in Figure 3, a kind of solar module 10, comprise some solar battery sheets 400 that mutual series and parallel connects, and for encapsulating the encapsulating structure of solar battery sheet 400, wherein, encapsulating structure adopts encapsulating structure as above.
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present invention or essential characteristic, the present invention can be realized in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present invention is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the present invention.Any Reference numeral in claim should be considered as the claim involved by limiting.
In addition, be to be understood that, although this specification is described according to execution mode, but not each execution mode only comprises an independently technical scheme, this narrating mode of specification is only for clarity sake, those skilled in the art should by specification integrally, and the technical scheme in each embodiment also through appropriately combined, can form other execution modes that it will be appreciated by those skilled in the art that.
Claims (10)
1. a solar energy backboard, described solar energy backboard comprises adhesion layer, body layer and the layer of resistance to ultraviolet, described body layer is between described adhesion layer and the described layer of resistance to ultraviolet, it is characterized in that, described adhesion layer is Hai Hu island clad structure, described Hai Hu island clad structure comprises some the island unit, some lake unit formed mutually by bulking agent material and the extra large unit formed mutually by attachment material that are formed mutually by the material of main part of body layer, wherein, described extra large unit coated described lake unit, unit coated described island, described lake unit.
2. solar energy backboard as claimed in claim 1, is characterized in that, contain some microballons in the described layer of resistance to ultraviolet and described adhesion layer, the particle size range of described microballon is 0.5-10 μm.
3. solar energy backboard as claimed in claim 1, it is characterized in that, the thickness of described adhesion layer is 0.01-0.1mm, and the thickness of described body layer is 0.1-0.3mm, and the outer field thickness of described resistance to purple is 0.01-0.075mm.
4. solar energy backboard as claimed in claim 1, it is characterized in that, described solar energy backboard is coextrusion mold structure.
5. solar energy backboard as claimed in claim 1, it is characterized in that, the material of main part of described body layer is PPE resin; Described body layer specifically comprises:
The PPE resin of 40-95wt%;
The ASA resin of 5-40wt%.
6. solar energy backboard as claimed in claim 1, it is characterized in that, the described layer of resistance to ultraviolet comprises the resistance to UV resin of 40-90wt% and the uvioresistant additive of 5-40wt%, described resistance to UV resin be selected from fluorine resin, PA resin and PET resin any one, described uvioresistant additive is selected from any one or a few the mixing in ASA resin, Chinese white, black pigment and microballon.
7. the encapsulating structure of a solar module, comprise glass, potting resin and solar energy backboard, it is characterized in that, described solar energy backboard adopts as the solar energy backboard in claim 1-6 as described in any one, and the body layer of described solar energy backboard is attached on described potting resin by described adhesion layer.
8. the encapsulating structure of solar module as claimed in claim 7, it is characterized in that, described adhesion layer comprises polyolefin resin, the PPE resin of 20-50wt%, the bulking agent of 10-40wt% of 20-70wt%.
9. the encapsulating structure of solar module as claimed in claim 8, it is characterized in that, described adhesion layer comprises the uvioresistant additive of 5-30wt% and/or the anti-deformation additive of 5-30wt% further, described uvioresistant additive is selected from any one or a few the mixing in ASA resin, Chinese white, black pigment and microballon, and described anti-deformation additive is the rubber resin with nucleocapsid structure.
10. a solar module, comprise some solar battery sheets that mutual series and parallel connects, encapsulating structure with for encapsulating described solar battery sheet, is characterized in that, described encapsulating structure adopts as the encapsulating structure in claim 7-9 as described in any one.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6369316B1 (en) * | 1998-07-03 | 2002-04-09 | ISOVOLTA Österreichische Isolierstoffwerke Aktiengesellschaft | Photovoltaic module and method for producing same |
| CN102177204A (en) * | 2008-10-09 | 2011-09-07 | 旭硝子株式会社 | Dark-colored fluororesin film, and back sheet for solar battery module |
| CN203617306U (en) * | 2013-09-06 | 2014-05-28 | 苏州柯莱美高分子材料科技有限公司 | Solar energy backboard, packaging structure and solar module |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6369316B1 (en) * | 1998-07-03 | 2002-04-09 | ISOVOLTA Österreichische Isolierstoffwerke Aktiengesellschaft | Photovoltaic module and method for producing same |
| CN102177204A (en) * | 2008-10-09 | 2011-09-07 | 旭硝子株式会社 | Dark-colored fluororesin film, and back sheet for solar battery module |
| CN203617306U (en) * | 2013-09-06 | 2014-05-28 | 苏州柯莱美高分子材料科技有限公司 | Solar energy backboard, packaging structure and solar module |
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