CN103441162A - Solar energy backboard of solar energy battery assembly and solar energy battery assembly - Google Patents
Solar energy backboard of solar energy battery assembly and solar energy battery assembly Download PDFInfo
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- CN103441162A CN103441162A CN2013104031979A CN201310403197A CN103441162A CN 103441162 A CN103441162 A CN 103441162A CN 2013104031979 A CN2013104031979 A CN 2013104031979A CN 201310403197 A CN201310403197 A CN 201310403197A CN 103441162 A CN103441162 A CN 103441162A
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Abstract
The invention discloses a solar energy backboard of a solar energy battery assembly and the solar energy battery assembly. The solar energy backboard comprises a main body layer and an adhesive layer. The adhesive layer is used for adhering the main body layer to filling resin of the solar energy battery assembly. The main body layer comprises: 40 to 95 wt% of PPE resin and 5 to 40 wt% of ASA resin. The solar energy backboard is effectively ensured to be high in mechanical strength, great in dimensional stability and flame resistance, high in insulating performance and high in adhesiveness to filling resin. Meanwhile, the solar energy backboard also has excellent and long weather-proof performance such as heatproof performance, hydrolysis resistant performance, ultraviolet resistant performance, etc.
Description
Technical field
The invention belongs to photovoltaic and manufacture field, be specifically related to a kind of solar energy backboard and solar module of solar module.
Background technology
Along with the development of modern industry, global energy crisis and atmosphere polluting problem become increasingly conspicuous, so 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, the photovoltaic field more and more comes into one's own, and has obtained and develop rapidly.Wherein, solar module directly changes into the core texture of electric energy as the energy by sunlight; its process structure mainly comprises: at first a plurality of solar battery sheets are carried out to the series and parallel connection, the solar battery sheet that then will complete the series and parallel connection carries out packaging protection.Encapsulating structure mainly comprises: transparency carrier; the general glass that adopts is made; for covering the sensitive surface of solar battery sheet; the employing backboard is protected, the back side of support solar cell piece, adopts potting resin (being generally the EVA plastics) that the gap between transparency carrier, backboard and solar battery sheet is filled simultaneously.Because the solar energy backboard needs long term exposure in outdoor environment, (business is 25 years with the instructions for use of solar module at present), therefore its should possess high mechanical properties, good dimensional stability, anti-flammability, high-insulation and with the basic function of the high tack of potting resin outside, also should there is very excellent, permanent comprising as the weather resistance of heat-resisting, hydrolysis and anti-ultraviolet etc., could meet the test in useful life that solar module reaches 25 years.
In prior art, solar energy backboard commonly used mainly comprises three kinds: TPT type solar energy backboard, TPE type solar energy backboard and PPP type solar energy backboard.Wherein, after TPT type solar energy backboard is the biaxial tension PET film double spread adhesive for polyurethane by one deck 250 μ m; PVF film at the compound 30 μ m of the two sides of PET film difference; the PVF film has superior outdoor environment weatherability (can reach more than 40 years); effectively protected the PET as the backboard main material, but the material cost of PVF is high.Wherein, after TPE type solar energy backboard is the biaxial tension PET film double spread adhesive for polyurethane by one deck 250 μ m, PVF film at the compound 30 μ m of the lower surface of PET film, and PE or the eva film of surface recombination 50 μ m thereon, TPE type solar energy backboard has weatherability preferably, and, with respect to TPT type solar energy backboard, its cost of manufacture is lower, be also to use more type in existing market; Wherein, after PPP solar energy backboard is the biaxial tension PET film double spread adhesive for polyurethane by one deck 250 μ m, hydrolysis PET film at the compound 50 μ m of the lower surface of PET film, and the PE film of surface recombination 50 μ m thereon, PPP type solar energy backboard cost is minimum, but its weatherability is not so good as TPT type solar energy backboard and TPE type solar energy backboard, so in existing market, makes land used less.
From above, find out, the material of main part that the solar energy backboard adopts at present is PET, in order to guarantee that the solar energy backboard possesses high mechanical properties, good dimensional stability, anti-flammability and high-insulation, yet owing to containing a large amount of ester groups in the PET molecular backbone, with glassware for drinking water, good compatibility is arranged, easily produce water plasticising, even the moisture of trace also can cause the degraded of PET molecular backbone, thereby cause the mechanical performance of PET to be damaged, temperature can make above-mentioned degradation process obviously accelerate while raising, therefore water and heat are the main causes that causes the PET mechanical strength sharply to descend.In addition, ultra-violet radiation also can make the molecular weight of PET, strength and elongation significantly descend, and degree of crystallinity increases, thereby the mechanical performance of PET material is damaged.And because the protective layer thickness that is positioned at the pet layer lower surface in the solar energy backboard generally only has 30 μ m; in long outdoor overall situation is used; aqueous vapor and oxygen still can penetrate into the pet layer in the middle of being positioned at by the lower surface protective layer; cause pet layer degraded, deteriorated; final and potting resin breaks away from; its protection to solar battery sheet and support function were lost efficacy, and then cause the generating efficiency of solar module to reduce and even the solar module global failure.
Therefore be necessary existing solar energy backboard is proposed to improve, guarantee it possess high mechanical properties, good dimensional stability, anti-flammability, high-insulation and with the prerequisite of the high tack of potting resin under, also possess excellence, the permanent weather resistance comprised as heat-resisting, hydrolysis and anti-ultraviolet etc. simultaneously.
The technical scheme the most approaching with technical solution of the present invention has, the Chinese invention patent that publication number is CN102414838A discloses a kind of used for solar batteries sheet, the individual layer that it is specifically formed by polyphenylene oxide resinoid layer or the used for solar batteries sheet of sandwich construction, described polyphenylene oxide resinoid layer is by with durability, anti-flammability, and excellent in dimensional stability, and the resin combination that the high polyphenylene oxide of the adaptation between potting resin layer etc. is principal component forms.Although the PPE material is compared with the PET material, except possessing high mechanical properties, good dimensional stability, anti-flammability and high-insulation, also possess excellent heat-resisting, anti-hydrolytic performance.Yet find in actual applications, the ultra-violet resistance of PPE material is poor, this is to be attacked and fracture by ultraviolet ray because the phenyl ring on the high polymer main chain of PPE material is very easy to study discovery through the application, causes the PPE material to turn to be yellow, degrade and occurs deteriorated.Although this full patent texts discloses the various performances that multiple interpolation auxiliary agent further improves the PPE material, as the 9th page the-the 10th page of its patent specification, but still do not disclose the material that effective ultra-violet resistance is strong and improve the poor technical problem of PPE material ultra-violet resistance itself, this makes the PPE material be subject to larger restriction as the material of main part of solar energy backboard.
This patent also discloses lamination layer structure (referring to the 11st page the-the 12nd page, its specification), the main employing arranges intermediate layer, upper and lower surface in intermediate layer arranges the PPE layer, intention increases the mechanical strength of solar energy backboard, insulating properties and thermal endurance, yet ultraviolet irradiation comes from the lower top layer of solar energy backboard mostly, this patent all adopts by polyphenylene oxide as material of main part, and add the lower top layer of the layer (I) of the additive composition with excellent ultra-violet resistance as the solar energy backboard, therefore be not difficult to find, this composite bed does not have essence to solve the poor technical problem of PPE material ultra-violet resistance fully, and such composite construction also can cause the tack of PPE material and potting resin (being generally the EVA resin) poor simultaneously, packaging effect can't be guaranteed, need to add and to be beneficial in a large number the interpolation material that layer (I) and potting resin adhere to or easy adhesive linkage is set separately, technique is comparatively loaded down with trivial details.
Although also adopting a large amount of lengths (referring to the 25th page the-the 30th page, specification) record to adopt, this patent there is the UV stable of selection group, the acrylic copolymer of at least one group in ultraviolet-absorbing group and cycloalkyl is used as a kind of material in inorganic thin film layer (being a type of layer (II) structure of this patent), and according in the disclosed multiple lamination layer structure of this patent (referring to the 18th page, specification), only using this layer (II) as intermediate layer or as the upper epidermis adhered to potting resin, and still adopt by polyphenylene oxide as material of main part, and add the lower top layer of the layer (I) of the additive composition with excellent ultra-violet resistance as the solar energy backboard, therefore still do not have essence to solve the poor technical problem of PPE material ultra-violet resistance.In addition, do not considering to produce under the prerequisite of other counter productives, the applicant makes the creative work hypothesis, using layer (I) as intermediate layer, and because the thickness of the layer (I) be comprised of as material of main part polyphenylene oxide at least takies more than 50% of the disclosed solar energy backboard of this patent gross thickness, even if will there is the UV stable group, the inorganic thin film of the acrylic copolymer of at least one group in ultraviolet-absorbing group and cycloalkyl is as the protective layer of lower surface, with existing conventional TPT type solar energy backboard, the technical problem that TPE type solar energy backboard and PPP type solar energy backboard exist is similar, because the thickness on upper and lower top layer is lower, in long-term outdoor environment is used, ultraviolet light still can penetrate into the pet layer in the middle of being positioned at by upper and lower top layer (being mainly lower top layer), cause the pet layer degraded, deteriorated, final and potting resin breaks away from, its protection to solar battery sheet and support function were lost efficacy, and then cause the generating efficiency of solar module to reduce and even the solar module global failure.
In addition, the technical scheme combination that this patent is announced too much, and the additive types coverage rate of its disclosure is excessively wide, yet in fact, these miscellaneous additives are not, for the various performances of improving the solar energy backboard, good effect is all arranged, therefore, those skilled in the art are difficult to acquisition of technology solar energy backboard satisfactory for result on the basis of this patent at all.
Therefore comprehensive above content, still solve above technical problem in the urgent need to seeking the 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 and solar module of solar module, effectively guarantee the solar energy backboard possess high mechanical properties, good dimensional stability, anti-flammability, high-insulation and with the prerequisite of the high tack of potting resin under, also possess excellence, the permanent weather resistance comprised as heat-resisting, hydrolysis and anti-ultraviolet etc. simultaneously.
Before proposing technical solution of the present invention, for many years working and the research and development experience of the applicant based in solar energy backplane technology field, and combine a large amount of analytical works, under the basic premise of guaranteeing not affect the multinomial performance that the solar energy backboard itself need possess, draw the poor technical scheme of ultra-violet resistance that can significantly effectively make up the PPE material, therefore finally obtain solar energy backboard of the present invention, its technical scheme please see below.
To achieve these goals, technical scheme provided by the invention is as follows:
A kind of solar energy backboard of solar module, described solar energy backboard comprises body layer and adhesion layer, described adhesion layer is attached to the potting resin of described solar module for body layer; Wherein, described body layer comprises:
The PPE resin of 40-95wt%;
The ASA resin of 5-40wt%.
Preferably, described body layer further comprises the interpolation resin of 0-20wt%, and described interpolation resin is selected from any one or a few the mixing in PS resin, PP resin, PA resin, HIPS resin, PE resin and EVA resin.
Preferably, described potting resin is the EVA resin, and described adhesion layer comprises the polyolefin resin of 20-70wt%, the PPE resin of 20-50wt%, the bulking agent of 10-40wt%.
Preferably, described adhesion layer further comprises the uvioresistant additive of 5-30wt% and/or the anti-deformation additive of 5-30wt%, 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, described solar energy backboard further comprises the layer of anti-the ultraviolet, and its thickness is 0.01-0.075mm, and described body layer is between described adhesion layer and the described layer of anti-the ultraviolet.
Preferably, the described layer of anti-the ultraviolet comprises the resin of anti-ultraviolet of 40-90wt% and the uvioresistant additive of 5-40wt%, the described resin of anti-the ultraviolet is selected from any one in fluorine resin, PA resin and PET resin, and described uvioresistant additive is selected from any one or a few the mixing in ASA resin, Chinese white, black pigment and microballon.
Preferably, the described layer of anti-the ultraviolet further comprises the PPE resin of 5-40wt%.
Preferably, described solar energy backboard adopts coextruding method or rolling process or cladding process to prepare moulding; More preferably, described solar energy backboard adopts coextruding method to prepare moulding.
Preferably, the thickness of described body layer is 0.1-0.3mm, and the thickness of described adhesion layer is 0.01-0.1mm.
Preferably, a kind of solar module, comprise some solar battery sheets that mutual series and parallel connects, with for encapsulating the encapsulating structure of described solar battery sheet, described encapsulating structure is comprised of glass, potting resin and solar energy backboard, wherein, described solar energy backboard adopts solar energy backboard as above.
In conjunction with the background technology content, due to the PPE resin 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 during as the solar energy back veneer material, also exist ultra-violet resistance poor with and and potting resin (being generally the EVA resin) between the poor defect of mutual capacitive, the present invention proposes to adopt the core constituent of the blend of PPE resin and ASA resin as body layer in the solar energy backboard first, this is because the applicant finds through lot of experiments with after analyzing, the ASA resin has extremely superior uvioresistant performance, after it and PPE resin carry out blend, can increase substantially the ultraviolet aging resistance performance of PPE in solar energy back plate main body layer, there is the poor technical barrier of ultra-violet resistance thereby overcome smoothly when the PPE material is applied in the solar energy backboard, the present invention simultaneously arranges adhesion layer at the upper surface of body layer, this adhesion layer can be used for body layer well attached on potting resin (as the EVA resin) in solar module, thereby efficiently solve again the PPE material and have itself and potting resin when being applied in the solar energy backboard, main another technical barrier as poor as the mutual capacitive between the EVA resin, and then finally realized the applications well of PPE material in the solar energy backboard, effectively brought into play the premium properties that PPE itself possesses, therefore, solar energy backboard provided by the invention effectively guarantees that the solar energy backboard possesses high mechanical properties, good dimensional stability, anti-flammability, high-insulation and with the prerequisite of the high tack of potting resin under, also possesses excellence simultaneously, permanent comprises as heat-resisting, the weather resistance of hydrolysis and anti-ultraviolet etc.
The accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below will the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described, apparently, the accompanying drawing the following describes is only some embodiment that put down in writing in the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
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 of solar module, the solar energy backboard comprises body layer and adhesion layer, and adhesion layer is attached to the potting resin of solar module for body layer; Wherein, body layer comprises:
The PPE resin of 40-95wt%;
The ASA resin of 5-40wt%.
The embodiment of the invention also discloses a kind of solar module, comprise some solar battery sheets that mutual series and parallel connects, with for encapsulating the encapsulating structure of solar battery sheet, encapsulating structure is comprised of glass, potting resin and solar energy backboard, wherein, the solar energy backboard adopts solar energy backboard as above.
In conjunction with the background technology content, due to the PPE resin 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 during as the solar energy back veneer material, also exist ultra-violet resistance poor with and and potting resin (being generally the EVA resin) between the poor defect of mutual capacitive, the embodiment of the present invention proposes to adopt the core constituent of the blend of PPE resin and ASA resin as body layer in the solar energy backboard first, this is because the applicant finds through lot of experiments with after analyzing, the ASA resin has extremely superior uvioresistant performance, after it and PPE resin carry out blend, can increase substantially the ultraviolet aging resistance performance of PPE in solar energy back plate main body layer, there is the poor technical barrier of ultra-violet resistance thereby overcome smoothly when the PPE material is applied in the solar energy backboard, the embodiment of the present invention arranges adhesion layer at the upper surface of body layer simultaneously, this adhesion layer can be used for body layer well attached on potting resin (as the EVA resin) in solar module, thereby efficiently solve again the PPE material and have itself and potting resin when being applied in the solar energy backboard, main another technical barrier as poor as the mutual capacitive between the EVA resin, and then finally realized the applications well of PPE material in the solar energy backboard, effectively brought into play the premium properties that PPE itself possesses, therefore, the solar energy backboard that the embodiment of the present invention provides effectively guarantees that the solar energy backboard possesses high mechanical properties, good dimensional stability, anti-flammability, high-insulation and with the prerequisite of the high tack of potting resin under, also possesses excellence simultaneously, permanent comprises as heat-resisting, the weather resistance of hydrolysis and anti-ultraviolet etc.
In order to make those skilled in the art person understand better the technical scheme in the present invention, 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, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making under the creative work prerequisite the every other embodiment obtained, 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 anti-ultraviolet the 130, body layer 120 is between adhesion layer 110 and the layer of anti-ultraviolet the 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 the 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 anti-ultraviolet the 130 is 0.01-0.075mm.
In order to ensure solar energy backboard in the embodiment of the present invention not only possess high mechanical properties, good dimensional stability, anti-flammability, high-insulation and with the prerequisite of the high tack of potting resin under, also possess excellence, the permanent weather resistance comprised as heat-resisting, hydrolysis and anti-ultraviolet etc. simultaneously, further particularly, in the present embodiment, body layer 120 comprises: the PPE resin of 40-95wt%; The ASA resin of 5-40wt%.
Because being body layer, technological core of the present invention adopts the blend of PPE resin and ASA resin, and a kind of adhesion layer with superior adhesion effect proposed, and the technological know-how level of those skilled in the art based on self, not needing to pay creative work just can know, in order further to improve the required various performances of solar energy backboard, under the prerequisite that does not affect the technology of the present invention effect, can be on the basis of the disclosed technology contents of the present invention according to self actual demand, select other to add material, therefore specifically do not launch one by one herein to repeat, and suitably quote Chinese invention patent that publication number is CN102414838A and do and exemplify explanation.
For resistance to impact and the processing characteristics that improves solar energy backboard 100, so that comprising of adopting during following process extruded, the thermoplastic manufacturing procedures such as injection moulding, preferably, in the present embodiment, body layer 120 further comprises the interpolation resin of 0-20wt%, add resin and be selected from the PS resin, the PP resin, the PA resin, the HIPS resin, the mixing of any one or a few 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, additive can be also the resin that [0105] linkage section between 10 pages of publication number Chinese invention patent Instructions Page 9-that is CN102414838A is put down in writing, therefore no longer specifically repeat.
Particularly, in the present embodiment, the technology contents of record in Chinese invention patent Instructions Page 9 that the concrete material of PPE resin can be CN102414838A referring to publication number [0099] Duan Zhi [0101] section, 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, can further effectively guarantee the good blend of PPE resin and ASA resin in the embodiment of the present invention; Further particularly, styrene compound can be styrene, AMS, vinyltoluene, chlorostyrene etc., natch, in other embodiments, the copolymer of styrene compound can be also the copolymer that adopts other concrete styrene compound copolymerization to form.
Further specifically preferably, in the present embodiment, can also add other functional additive at body layer 120: for example, in order further to improve the anti-flammability of solar energy backboard 100, can in body layer 120, add the fire retardant that is applicable to mass parts, the technology contents of record in Chinese invention patent Instructions Page 10 that the concrete material of fire retardant and mass parts can be CN102414838A referring to publication number equally [0106] Duan Zhi [0109] section, can certainly adopt other any one known fire retardant; For example, in order further to improve the antioxidant effect of solar energy backboard 100 in the course of processing and long-term the use, can in body layer 120, add the antioxidant that is applicable to mass parts, the technology contents of record in the 40th page of [0444] Duan Zhi [0448] section of the Chinese invention patent specification that the concrete material of antioxidant and mass parts can be CN102414838A referring to publication number equally; For example, in order further to improve the thermal stability of solar energy backboard 100 in the course of processing and long-term the use, can in body layer 120, add the heat stabilizer that is applicable to mass parts, the related content of putting down in writing in the Chinese invention patent specification that its concrete material and mass parts can be CN102414838A referring to publication number equally; For example, the thermoplastic manufacturing procedures such as comprising of adopting during for the ease of solar energy backboard 100 following process extruded, injection moulding, can in body layer 120, add the plasticizer that is applicable to mass parts, plasticizer can be oil, low molecular weight polyethylene, epoxidised soybean oil, polyethylene glycol, fatty acid ester etc.For example, in order further to improve the anti-ultraviolet effect of solar energy backboard 100, can in body layer 120, add the ultraviolet absorber of applicable mass parts or/and UV stabilizer, the technology contents of record in 29 pages [0323] section of the 25th page of [0283] Duan Zhi of the Chinese invention patent specification that its concrete material and mass parts can be CN102414838A referring to publication number equally, can certainly in body layer 120, add the Chinese white or the black pigment that are applicable to mass parts, more preferably, Chinese white adopts titanium dioxide, black pigment adopts carbon black, can certainly be referring to the technology contents of record in the 14th page of [0146] Duan Zhi [0147] section of CN102414838A patent specification.
Can also be as described in the 10th page [0110] section of CN102414838A patent specification, as long as under the prerequisite of impact core technology effect of the present invention, can also add the additive of other composition according to actual needs: for example, for inorganic filling materials such as the carbon filler that further improves thermal endurance and mechanical strength, glass filler, talcum, micas.
For there is the not good defect of mutual capacitive in PPE material and the EVA resin 200 overcome in body layer 120, further preferably simultaneously, the embodiment of the present invention also provides a kind of better superior adhesion layer 110 structures of adhesion effect that make between body layer 120 and EVA resin 200, particularly, please further shown in Figure 2, adhesion layer 110 Wei Haihu island clad structures, Hai Hu island clad structure comprises some unit, island 111 that formed mutually by the material of main part of body layer 120, some unit, lake 112 that formed mutually by the bulking agent material and the extra large unit 113 formed mutually by attachment material, wherein, unit, sea 113 coats unit, lake 112, unit, lake 112 coats unit, island 111, further particularly, adhesion layer 110 comprises the polyolefin resin of 20-70wt%, the PPE resin of 20-50wt%, the bulking agent of 10-40wt%, wherein, polyolefin resin is attachment material, the material of main part that the PPE resin is 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 unit, island 111 formed by the PPE resin-phase in adhesion layer 110 has very good tack with body layer 120 again, the unit, lake 112 simultaneously formed mutually by the bulking agent material in adhesion layer 110 make again between the extra large unit 113 formed mutually by polyolefin resin and the unit, island 111 formed by the PPE resin-phase, carry out very well compatible, final solar energy backboard 100 is realized very good adhering to EVA resin 200.Particularly, the concrete composition of polyolefin resin can be referring to the technology contents of record in the 11st page [0117] section of CN102414838A patent specification.
Related bulking agent can claim compatibilizing agent again in the present embodiment, refers to by means of intermolecular bonding force, impels the not good polyolefin resin of compatibility and PPE resin to be combined in well one, and then obtains the auxiliary agent of stable blend.Particularly, in the present embodiment, bulking agent can be block or the graft copolymer identical with the chemical composition of polyolefin resin and PPE resin, can be also that chemical composition from polyolefin resin and PPE resin is different but can distinguish compatible with it block 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, can also adopt low molecule-type bulking agent, can certainly adopt existing any one to be beneficial to polyolefin resin and the PPE resin carries out the bulking agent held mutually, 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 further comprises the uvioresistant additive of 5-30wt% and/or the anti-deformation additive of 5-30wt%, the 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 be referring to the technology contents of record in the 14th page of [0146] Duan Zhi [0147] section of CN102414838A patent specification.Further particularly, the rubber resin that has a nucleocapsid structure can be styrene, acrylic acid, organosilicon, butadiene be monomer monobasic or multiple copolymer.
Specifically preferably, the layer of anti-ultraviolet the 130 comprises the resin of anti-ultraviolet of 40-90wt%, the uvioresistant additive of 5-40wt% and the PPE resin of 5-40wt%, the resin of anti-the ultraviolet is selected from any one in fluorine resin, PA resin and PET resin, more preferably, the resin of anti-the ultraviolet is PA resin or PET resin, is beneficial to the subsequent recovery utilization of solar energy backboard 100 materials.The 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 be referring to the technology contents of record in the 14th page of [0146] Duan Zhi [0147] section of CN102414838A patent specification.
In order further to improve the ultra-violet resistance of the layer of anti-ultraviolet the 130 and adhesion layer 110, preferably, in the present embodiment, contain some microballons (figure does not specifically illustrate) in the layer of anti-ultraviolet the 130 and adhesion layer 110, the particle size range of microballon is 0.5-10 μ m, microballon can play very good reflecting effect to ultraviolet ray, thereby can further improve the ultra-violet resistance of the layer of anti-ultraviolet the 130 and adhesion layer 110 in the present embodiment.
Preferably, solar energy backboard 100 adopts coextruding method or rolling process or cladding process to prepare moulding.Particularly, coextruding method, rolling process and cladding process all can adopt existing any one known method to prepare moulding, natch, and also can be referring to the correlation technique content of putting down in writing in the CN102414838A patent specification.More preferably, in the present embodiment, solar energy backboard 100 adopts coextruding method to prepare moulding, obtain the coextrusion mold structure, avoid the bonding agent adopted in rolling process, therefore the recovery that is beneficial to solar energy backboard 100 materials is used, and have at present conventional solar energy backboard 100 now 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, recycle not only bad for raw-material, also has a strong impact on environment.
Further, because the PPE resin has high rigidity, and toughness is poor, thereby usually be 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 that adds man-hour at thermoplastic is very excellent, therefore the body layer formed by PPE resin and ASA mixed with resin that the embodiment of the present invention provides can be particularly suitable for carrying out coextruding heat and prepare processing and forming, the good characteristic that this Chinese invention patent that is equally publication number is CN102414838A does not possess, the technical scheme of the embodiment of the present invention is simple, and effectively promoted the good commercial application of the embodiment of the present invention, and follow-up recycling.
In order to save the word length of this paper, the chemical substance that this patent adopts it has mainly adopted the simplification title to indicate, and concrete corresponding namelist is asked 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 (claiming again nylon nylon) |
| HIPS | High Impact Polystyrence, high impact polystyrene |
For the weatherability of further checking solar energy backboard 100 of the present invention with and with the technique effect (specifically referring to following table 2) of the tack of EVA resin 200, 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 anti-ultraviolet the 130, body layer 120 is between adhesion layer 110 and the layer of anti-ultraviolet the 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 anti-ultraviolet the 130 is 0.04mm.
Wherein, adhesion layer 110 Wei Haihu island clad structures, Hai Hu island clad structure comprises some unit, island that formed mutually by the material of main part of body layer 120, some unit, lake formed mutually by the bulking agent material and the extra large unit formed mutually by attachment material, wherein, unit, coating island, ，Hu unit, unit, coating lake, unit, sea.
The layer of anti-ultraviolet the 130 comprises: the carbon black of the PET resin of 60wt%, the ASA resin of 15wt%, 8wt%, the microballon of 12wt% and the PPE resin of 5wt%, wherein, the particle size range of microballon is 0.5-10 μ m.
In the present embodiment, solar energy backboard 100 adopts the coextruding method that belongs to known technology to prepare moulding, therefore obtains three layers of compound coextrusion mold structure, is conducive to follow-up MAT'L recycling.
Embodiment 2:
All the other are identical with above-described embodiment 1, distinguish and only be, the body layer 120 in the present embodiment 2 comprises: the interpolation resin formed by PS resin, PP resin and EVA mixed with 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 the plasticizer of 2wt%.
Embodiment 3:
All the other are identical with above-described embodiment 1, distinguish and only be, the body layer 120 in the present embodiment 3 comprises: the interpolation resin formed by PS resin, PP resin and PE mixed with resin of the PPE resin of 80wt%, the ASA resin of 5wt%, 5wt%, the titanium dioxide of 2.5wt%, the antioxidant of 2.5wt%, the heat stabilizer of 3wt% and the plasticizer of 2wt%.
Embodiment 4:
All the other are identical with above-described embodiment 1, distinguish and only are, the body layer 120 in the present embodiment 4 comprises: the interpolation resin formed by HIPS resin, PP resin and PA mixed with resin of the PPE resin of 90wt%, the ASA resin of 7wt%, 3wt%.
Embodiment 5:
All the other are identical with above-described embodiment 1, distinguish and only are, 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, distinguish and only be, the body layer 120 in the present embodiment 6 comprises: the interpolation resin formed by PS resin, PP resin, PA resin and PE mixed with resin of the PPE resin of 60wt%, the ASA resin of 25wt%, 5wt%, the titanium dioxide of 2.5wt%, the antioxidant of 2.5wt%, the heat stabilizer of 3wt% and the plasticizer of 2wt%.
Embodiment 7:
All the other are identical with above-described embodiment 1, distinguish and only be, the body layer 120 in the present embodiment 7 comprises: the interpolation resin formed by HIPS resin, PP resin and PA mixed with resin of the PPE resin of 50wt%, the ASA resin of 25wt%, 5wt%, the titanium dioxide of 5wt%, the antioxidant of 5wt%, the heat stabilizer of 5wt% and the plasticizer of 5wt%.
Embodiment 8:
All the other are identical with above-described embodiment 1, distinguish and only be, the body layer 120 in the present embodiment 8 comprises: the interpolation resin formed by PS resin, PP resin, PA resin, PE resin and EVA mixed with 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 the plasticizer of 2wt%.
Embodiment 9:
All the other are identical with above-described embodiment 1, difference only is: the adhesion layer 110 in the present embodiment 9 comprises: the microballon of the ASA resin of the polyolefin resin of 75wt%, 10wt%, the titanium dioxide of 6wt%, 5wt% and the rubber resin with nucleocapsid structure of 4wt%, wherein, the particle size range of microballon is 0.5-10 μ m.
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, and difference only is: the body layer in this comparative example 3 comprises: the interpolation resin formed by PS resin, PP resin and PA mixed with resin of the PPE resin of 75wt%, 15wt%, the titanium dioxide of 2.5wt%, the antioxidant of 2.5wt%, the heat stabilizer of 3wt% and the plasticizer of 2wt%.
Comparative example 4:
All the other are identical with the embodiment of the present invention 1, and difference only is: the body layer in this comparative example 4 comprises: the interpolation resin formed by PS resin, PP resin and PA mixed with resin of the PPE resin of 75wt%, 10wt%, the titanium dioxide of 5wt%, the antioxidant of 5wt%, the heat stabilizer of 3wt% and the plasticizer of 2wt%.
Comparative example 5:
All the other are identical with the embodiment of the present invention 1, and difference only is: the solar energy backboard in this comparative example 5 comprises body layer and the layer of anti-the ultraviolet; The thickness of body layer is 0.2mm, and the outer field thickness of anti-purple is 0.04mm.
Table 2 implementation result relatively
Concrete method of testing explanation:
(1), thermal endurance, hydrolytic resistance
The solar energy backboard sample that coextrusion mold is obtained is positioned under the environment that temperature is 85 ℃, in the environment that relative humidity is 85%, places 3000 hours, observes the variation of solar energy backboard.
(2), ultra-violet resistance
The solar energy backboard sample that coextrusion mold is obtained is positioned in the ultraviolet lighting environment that wave-length coverage is 200-400nm and places 300 hours, observes the variation of solar energy backboard.
(3), with the tack of EVA resin
Adhesion layer in the solar energy backboard sample that coextrusion mold is obtained carries out 180 ° to be peeled off, and records peeling force, wherein:
√: represent that peel strength is more than 40N/15mm;
Δ: represent that peel strength is between 10-40N/15mm;
*: represent that peel strength is 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 example embodiment, and in the situation that do not deviate from spirit of the present invention or essential characteristic, can realize the present invention with other concrete form.Therefore, no matter from which point, all should regard embodiment as exemplary, and be nonrestrictive, scope of the present invention is limited by claims rather than above-mentioned explanation, therefore is intended to include in the present invention dropping on the implication that is equal to important document of claim and all changes in scope.Any Reference numeral in claim should be considered as limit related claim.
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 make specification as a whole, and the technical scheme in each embodiment also can, through appropriate combination, form other execution modes that it will be appreciated by those skilled in the art that.
Claims (10)
1. the solar energy backboard of a solar module, described solar energy backboard comprises body layer and adhesion layer, described adhesion layer is attached to the potting resin of described solar module for body layer; It is characterized in that, described body layer comprises:
The PPE resin of 40-95wt%;
The ASA resin of 5-40wt%.
2. the solar energy backboard of solar module as claimed in claim 1, it is characterized in that, described body layer further comprises the interpolation resin of 0-20wt%, and described interpolation resin is selected from any one or a few the mixing in PS resin, PP resin, PA resin, HIPS resin, PE resin and EVA resin.
3. the solar energy backboard of solar module as claimed in claim 1, is characterized in that, described potting resin is the EVA resin, and described adhesion layer comprises the polyolefin resin of 20-70wt%, the PPE resin of 20-50wt%, the bulking agent of 10-40wt%.
4. the solar energy backboard of solar module as claimed in claim 3, it is characterized in that, described adhesion layer further comprises the uvioresistant additive of 5-30wt% and/or the anti-deformation additive of 5-30wt%, 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.
5. the solar energy backboard of solar module as claimed in claim 1, is characterized in that, described solar energy backboard further comprises the layer of anti-the ultraviolet, and its thickness is 0.01-0.075mm, and described body layer is between described adhesion layer and the described layer of anti-the ultraviolet.
6. the solar energy backboard of solar module as claimed in claim 5, it is characterized in that, the described layer of anti-the ultraviolet comprises the resin of anti-ultraviolet of 40-90wt% and the uvioresistant additive of 5-40wt%, the described resin of anti-the ultraviolet is selected from any one in fluorine resin, PA resin and PET resin, and described uvioresistant additive is selected from any one or a few the mixing in ASA resin, Chinese white, black pigment and microballon.
7. the solar energy backboard of solar module as claimed in claim 6, is characterized in that, the described layer of anti-the ultraviolet further comprises the PPE resin of 5-40wt%.
8. the solar energy backboard of solar module as claimed in claim 1, is characterized in that, described solar energy backboard adopts coextruding method or rolling process or cladding process to prepare moulding.
9. the solar energy backboard of solar module as claimed in claim 1, is characterized in that, the thickness of described body layer is 0.1-0.3mm, and the thickness of described adhesion layer is 0.01-0.1mm.
10. a solar module, comprise some solar battery sheets that mutual series and parallel connects, with for encapsulating the encapsulating structure of described solar battery sheet, described encapsulating structure is comprised of glass, potting resin and solar energy backboard, it is characterized in that, described solar energy backboard adopts solar energy backboard as described as any one in claim 1-9.
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| CN103441162B (en) | 2016-04-13 |
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