CN103057223B - Polyamide backplane for solar energy assembly - Google Patents
Polyamide backplane for solar energy assembly Download PDFInfo
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- CN103057223B CN103057223B CN201210582704.5A CN201210582704A CN103057223B CN 103057223 B CN103057223 B CN 103057223B CN 201210582704 A CN201210582704 A CN 201210582704A CN 103057223 B CN103057223 B CN 103057223B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention discloses a polyamide backplane for a solar energy assembly. The polyamide backplane comprises an inner surface layer, a core layer, and an outer surface layer from the inside to the outside, wherein by mass, the ratio of inner surface layer to the core layer to the outer surface layer is 10-20:60-80:10-20. The inner surface layer and the outer surface layer are made from a polyamide resin, fillers and additives; the core layer is made from a modified polyamide resin composition; and the modified polyamide resin composition comprises a polyamide resin, grafted polyethylene, a polypropylene resin, fillers and additives. The novel polyamide backplane of the present invention is prepared by using coextrusion technology, the final product obtained has excellent adhesion and interlayer peeling force, anti-aging, particularly anti-damp and heat aging performance, and also has low saturation water absorption, low water vapor transmission and excellent electrical insulating properties, and is easy in preparation and low in cost, suitable for industrial production.
Description
Technical field
The present invention relates to a kind of solar module polymer backboard, be specifically related to a kind of polyamide solar energy backboard and preparation method thereof, belong to solar module manufacturing technology field.
Background technology
The current main energy sources of the mankind is from fossil energy, but the time of following about 100 years, fossil energy can approach exhaustion, and in the process using fossil energy, can discharge a large amount of carbon dioxide, cause the deterioration of terrestrial climate.The green regenerative energy sources of non-environmental-pollution is the unique channel solving the challenge of mankind's energy and low-carbon emission.Compared with other new forms of energy, owing to having, resource is the abundantest, Conversion of Energy the most directly and most clean environment firendly, advantage without fuel, zero-emission, solar energy become use the most simply, the most reliable, the most most economical new forms of energy.
Solar cell power generation technology mainly comprises crystal silicon solar energy battery and thin-film solar cells; no matter be which kind of solar cell; all need to be prepared into solar module, the battery of semiconductor is effectively protected and encapsulated, generating that could be permanently effective.Solar energy backboard is the structural encapsulating material of solar module, the service life extending solar cell is played a significant role, be the indispensable part of solar module, the material preparing backboard should have reliable insulating properties, water preventing ability, mechanical performance, resistance to UV aging and wet and heat ageing resistant performance.
In conventional art, the making of solar energy backboard take polyester film as base material film, and both sides coating or complex protection membrane material are main, complicated process of preparation, and resulting product exists that adhesive strength is low, coating cracking, loss of properties on aging and high in cost of production problem.
Polyamide due to the EVA(ethylene-vinyl acetate copolymer as encapsulating material) glued membrane and have good cementability as the silica gel be filled with a sealing, there is higher hot strength, impact strength and good wear-resisting, self-lubricating property simultaneously, and be expected to become important back veneer material, obtain the concern of researcher in recent years.International patent application WO2008/138021A2 discloses and utilizes polytype polyamide to replace polyester as the material be used in photovoltaic module backboard, comprising: polycaprolactam PA6, polyhexamethylene adipamide PA66, nylon 9 PA9, polycaprinlactam PA10, nylon 11 PA11, nylon 12 PA12, polynonamethylene adipamide PA69, polyhexamethylene sebacamide PA610, poly-12 acyl hexamethylene diamine PA612, amorphous polyamides PA6-3-T, poly-to () phthalic acid hexamethylene diamine PA6I and polyphthalamide PPA.
But polyamide material has higher hygroscopicity due to the architectural feature containing amide group in molecular chain-end, so the polyamide of non-modified to be difficult to overcome water absorption rate high, the defect of wet-hot aging performance difference, the barrier requirement of solar module to backboard can not be met, and then limit the application of polyamide as back veneer material.
On the other hand, coextrusion technology be with more than two or two screw extruders multiple polymers extruded simultaneously and in a head one-step method process of shaping multi-layer plate-type or laminated structure etc., which obviate traditional high cost and the lamination of complexity or coating process, easily can be shaped to the thin layer or superthin layer with property, also can easily by various additive as antioxidant etc. adds people's any one deck to needs, thus its to have production cost low, technique is simple, energy consumption is low, production efficiency is high, the features such as goods kind is many, be particularly suitable for producing laminated film goods, it is one of the most promising forming technique of current multilayer composite product.
Summary of the invention
The object of this invention is to provide a kind of polyamide solar energy backboard, it has low hygroscopicity, excellent wet and heat ageing resistant, cementability and mechanical performance, is suitable for the application of solar module.
For achieving the above object, the technical solution used in the present invention is: a kind of polyamide solar energy backboard, comprises endosexine, sandwich layer and extexine from inside to outside, and the mass ratio of described endosexine, sandwich layer and extexine is 10 ~ 20:60 ~ 80:10 ~ 20;
Wherein, described endosexine is made up of polyamide, filler and additive; Described additive is selected from one or more in antioxidant, ultraviolet absorber and light stabilizer;
Described extexine is made up of polyamide, filler and additive; Described additive is selected from one or more in antioxidant, ultraviolet absorber and light stabilizer;
Described sandwich layer is made up of modified polyamide resin composition;
Described modified polyamide resin composition, in mass parts, comprises following component:
Polyamide 5 ~ 75 parts
Acrylic resin 5 ~ 75 parts
Grafted polyethylene 5 ~ 50 parts
Filler 0 ~ 100 part
Additive 0.1 ~ 1.5 part
Described additive is selected from one or more in antioxidant, ultraviolet absorber and light stabilizer; Described acrylic resin is HOPP resin, acrylic resin copolymer or both mixtures;
Described grafted polyethylene is prepared by graft reaction by following component:
Polyvinyl resin 100 parts
Grafting agent 0.5 ~ 2.0 part
Initator 0.03 ~ 0.2 part
Wherein, described polyvinyl resin is homopolymerisation polyethylene, polyethylene copolymer or both mixtures.
In technique scheme, the DSC fusing point of described polyamide is 170 ~ 260 DEG C.
In technique scheme, the DSC fusing point of described acrylic resin is 160 ~ 168 DEG C, and melt flow rate (MFR) is 1 ~ 2 g/10min.
In technique scheme, the DSC fusing point of described polyvinyl resin is 120 ~ 135 DEG C, and melt flow rate (MFR) is 1 ~ 2 g/10min.
In technique scheme, described grafting agent is selected from the one in acrylic acid, acrylate, maleic acid, maleic anhydride or methine succinic acid.
In technique scheme, described initator is di-tert-butyl peroxide (DTBP) or cumyl peroxide (DCP).
In technique scheme, described filler is glass fibre, carbon fiber, talcum powder, mica, wollastonite or titanium dioxide.
The present invention asks the preparation method protecting above-mentioned polyamide solar energy backboard simultaneously, comprises the steps:
(1) preparation of grafted polyethylene: by said ratio, polyvinyl resin, grafting agent and initator are mixed, melt extrude processing through screw rod, prepare grafted polyethylene;
(2) preparation of modified polyamide resin composition: the polyamide of remainder, acrylic resin and filler to be joined in above-mentioned grafted polyethylene by proportioning and mix, through screw rod melt-processed, described modified polyamide resin composition can be obtained;
(3) preparation of modified polyamide solar energy backboard: by proportioning the material of preparation endosexine, sandwich layer and extexine joined respectively three-layer co-extruded go out in the A screw rod of units for sheet material, B screw rod and C screw rod, melt extrude at screw extruder simultaneously, through curtain coating, cooling, draw, batch and namely obtain described solar energy backboard.
In technique scheme, the reactive extrursion temperature that the screw rod in described step (1) melt extrudes processing is 160 ~ 220 DEG C; It is 95 ~ 105 revs/min that screw speed controls; The reactive extrursion temperature that screw rod in described step (2) and step (3) melt extrudes processing is 180 ~ 240 DEG C; It is 95 ~ 105 revs/min that screw speed controls.
The additive that the present invention adopts mainly comprises antioxidant, ultraviolet absorber and light stabilizer.
Antioxidant can suppress the thermo-oxidative ageing of polymer effectively.The kind of the present invention to antioxidant is not particularly limited.The antioxidant such as hindered phenol type, phosphite type and thioesters type can as antioxidant of the present invention, preferred antioxidant is four [-(3 ', 5 '-di-t-butyl-4 '-hydroxy phenyl) propionic acid] pentaerythritol ester and tricresyl phosphite (2,4-di-tert-butyl-phenyl) ester.
The present invention is not particularly limited for the kind of ultraviolet absorber and light stabilizer.Preferred ultraviolet absorber is UV-531, and preferred light stabilizer is two (2,2,6,6-tetramethyl-4-piperidyl) sebacates.Preferred further, light stabilizer coordinates ultraviolet absorber to use together, can play single use UV absorbers and to be beyond one's reach optimum efficiency, effectively prevent xanthochromia and the blocker rationality loss of energy of material, suppress or weaken photodegradation, improving light aging resisting property.
Acrylic resin has high strength, high-fire resistance, the dielectric properties of higher wearability, stress cracking resistance and low creep properties and excellence and owing to not having polar functional group in the molecular chain-end of propylene, therefore water absorption rate is extremely low, can meet the ageing-resistant performance requirement of solar module.Grafted polyethylene both can as the end-capping reagent of polyamide, can, as the compatilizer of polyamide and acrylic resin, make modified polyamide resin obtain excellent weather resisteant and wet and heat ageing resistant performance again.
Principle of the present invention is: cause the high amide group of polyamide water absorption rate to have high activity, can by the reaction with this group to polyamide modification, to improve the performance of polyamide thus to adapt to various different application needs.The present invention adopts grafting agent, under the effect of initator, obtain grafted polyethylene with polyethylene generation graft reaction; Grafted polyethylene is as reactant and polyamide generation end capping reaction, namely the end-blocking to moisture absorption group is achieved by the chemical reaction of amide group in the polar monomer in grafted polyethylene and polyamide, provide the modified polyamide resin of the electrical insulating property with excellent wet and heat ageing resistant performance, low saturated water absorption and excellence, and by this resin manufacture for the backboard base material film of solar components, and prepare polyamide solar energy backboard with ectonexine polyamide resin by coextrusion mode.
In the present invention, endosexine contacts with the EVA adhesive film in solar module, and extexine is positioned at the outside of solar module.
Due to the employing of technique scheme, compared with prior art, tool of the present invention has the following advantages:
1. this invention exploits a kind of new Amilan polyamide resin composition, improved water absorbing properties and the wet-hot aging performance of polyamide as end-capping reagent and compatilizer by grafted polyethylene, grafted polyethylene improves the compatibility of polyamide and acrylic resin as compatilizer simultaneously, and utilizes described composition to prepare coextrusion polyamide solar energy backboard.
2. the solar energy backboard prepared by modified polyamide resin composition disclosed by the invention is while having excellent cementability, splitting power, also have ageing-resistant, especially the performance of wet and heat ageing resistant, there is the electrical insulating property of low saturated water absorption, low-temperature impact resistance, low moisture-vapor transmission and excellence simultaneously, can be used for manufacturing solar module.
3. the rheological characteristic of interior, core, outer skin materials that the present invention is used and process selectivity consistent, be conducive to coextrusion and produce, required preparation method is simple, cost is low, be suitable for applying.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described:
Embodiment one:
A kind of polyamide solar energy backboard, its preparation method is as follows:
(1) preparation of grafted polyethylene PE-MA
By 100 parts of (mass parts) LLDPE7042(Beijing Yanshan Petrochemical Companies), 1 part of maleic anhydride (chemical reagent, analyze pure), 0.05 part of DCP initator (Beijing Chemical Research Institute) mixes after measuring respectively, (screw diameter is 75 millimeters to carry out melt extruding granulation in input double screw extruder, draw ratio 33, extruder temperature controls at 160-220 DEG C, it is 100 revs/min that screw speed controls, and the time of staying of material in screw rod is 2-4 minute); Cooling and dicing obtains graininess grafted polyethylene PE-MA, and the melt flow rate (MFR) of its 190 DEG C/2.16 kilograms is 0.5g/10min.
Described LLDPE7042(Beijing Yanshan Petrochemical Company) be LLDPE, its DSC fusing point is 125 DEG C, melt flow rate (MFR) 2g/10min(190 DEG C, 2.16 kilograms), number-average molecular weight 17000, weight average molecular weight 100000, hot strength 12MPa, elongation at break 500%;
(2) preparation of core material (modified polyamide resin composition)
25 parts of poly-12 carbon two acyls hexamethylene diamine (PA612) (ShanDong DongChen Engineering Plastic Co., Ltd.) are added in drier, 80 DEG C of dryings 4 hours, then drop into and highly stir in machine, add 75 parts of block copolymerization polypropylene K8303(Beijing Yanshan Petrochemical Companies), 5 parts of grafted polyethylene PE-MA, 0.2 part of antioxidant four [-(3 ', 5 '-di-t-butyl-4 '-hydroxy phenyl) propionic acid] pentaerythritol ester (Beijing addition auxiliary agent research institute, KY1010), 0.2 part of UV absorbers UV-531 (Beijing addition auxiliary agent research institute, GW531), 0.1 part of light stabilizer two (2, 2, 6, 6-tetramethyl-4-piperidyl) sebacate (Beijing addition auxiliary agent research institute, GW480), stir 30 minutes, rotating speed 600 revs/min, mixing of materials is even, above-mentioned material is dropped in double screw extruder and carries out melt extruding granulation, material is finished product after cooling and dicing drying.
Twin-screw adopts vented screw, and screw diameter is 75 millimeters, draw ratio 33, and extruder temperature controls at 180-240 DEG C, and it is 100 revs/min that screw speed controls, and the time of staying of material in screw rod is 2-4 minute.
Described polypropylene K8303 is the block copolymerization polypropylene product that Beijing Yanshan Petrochemical Company produces, its DSC melt temperature 163 DEG C, melt flow rate (MFR) 2g/10min(230 DEG C, 2.16 kilograms), number-average molecular weight 29000, weight average molecular weight 38000, tensile yield strength 22MPa, elongation at break 22%, Rockwell hardness 75R, being 480J/M during cantilever beam impact strength 23 DEG C, is 40J/M when-20 DEG C;
(3) preparation of solar energy backboard
100 parts of poly-12 carbon two acyls hexamethylene diamine (PA612) are added in drier, 80 DEG C of dryings dropped into after 4 hours highly stirs in machine, add 20 parts of rutile type titanium white R960,0.2 part of antioxidant four [-(3 ', 5 '-di-t-butyl-4 '-hydroxy phenyl) propionic acid] pentaerythritol ester, 0.2 part of UV absorbers UV-531,0.1 part of light stabilizer two (2,2,6,6-tetramethyl-4-piperidyl) sebacate, stir 30 minutes, rotating speed 600 revs/min, mixing of materials is even; Then above-mentioned material is dropped into three-layer co-extruded go out the A screw rod of units for sheet material, screw diameter is 60 millimeters, draw ratio 33;
The finished product core material of 100 parts of above-mentioned preparations is added in drier, 80 DEG C of dryings drop into after 4 hours three-layer co-extruded go out the B screw rod of units for sheet material, screw diameter is 90 millimeters, draw ratio 33;
100 parts of poly-12 carbon two acyls hexamethylene diamine (PA612) are added in drier, 80 DEG C of dryings dropped into after 4 hours highly stirs in machine, add 20 parts of rutile type titanium white R960,0.2 part of antioxidant four [-(3 ', 5 '-di-t-butyl-4 '-hydroxy phenyl) propionic acid] pentaerythritol ester, 0.2 part of UV absorbers UV-531,0.1 part of light stabilizer two (2,2,6,6-tetramethyl-4-piperidyl) sebacate, stir 30 minutes, rotating speed 600 revs/min, mixing of materials is even; Then above-mentioned material is dropped into three-layer co-extruded go out the C screw rod of units for sheet material, screw diameter is 60 millimeters, draw ratio 33;
Melt extruded at screw extruder by three kinds of materials, extruder temperature controls at 180-240 DEG C simultaneously, and it is 100 revs/min that screw speed controls, and the time of staying of material in screw rod is 2-4 minute.Extexine, sandwich layer and three kinds, endosexine material distribute in distributor, and mass ratio is 20/60/20, then enters T-pattern head, die width 1200mm, obtains finished product S1 through operations such as cooling, draw, batch.Three roller cooling water temperature 60-70 DEG C, hauling speed 3-4 m/min, product thickness 0.33mm, width 1000mm, testing result is in table 1.
Embodiment two:
A kind of polyamide solar energy backboard, its preparation method is as follows:
(1) preparation of grafted polyethylene PE-MA: see embodiment one
(2) preparation of core material (modified polyamide resin composition)
20 parts of nylon 1010s (PA1010) are added in drier, 80 DEG C of dryings dropped into after 4 hours highly stirs in machine, add 80 parts of block copolymerization polypropylene K8303, 40 parts of grafted polyethylene PE-MA, 30 parts of rutile type titanium white R960, 0.25 part of antioxidant four [-(3 ', 5 '-di-t-butyl-4 '-hydroxy phenyl) propionic acid] pentaerythritol ester, 0.21 part of UV absorbers UV-531, 0.13 part of light stabilizer two (2, 2, 6, 6-tetramethyl-4-piperidyl) sebacate, stir 30 minutes, rotating speed 600 revs/min, mixing of materials is even, then dropped in double screw extruder by above-mentioned material and melt extrude, material is finished product after cooling and dicing drying,
Twin-screw adopts vented screw, and screw diameter is 75 millimeters, draw ratio 33, and extruder temperature controls at 180-240 DEG C, and it is 100 revs/min that screw speed controls, and the time of staying of material in screw rod is 2-4 minute.
(3) preparation of solar energy backboard
100 parts of nylon 1010s (PA1010) are added in drier, 80 DEG C of dryings 4 hours; Then drop into and highly stir in machine, add 20 parts of rutile type titanium white R960,0.2 part of antioxidant four [-(3 ', 5 '-di-t-butyl-4 '-hydroxy phenyl) propionic acid] pentaerythritol ester, 0.2 part of UV absorbers UV-531,0.1 part of light stabilizer two (2,2,6,6-tetramethyl-4-piperidyl) sebacate, stirs 30 minutes, rotating speed 600 revs/min, mixing of materials is even; Then above-mentioned material is dropped into three-layer co-extruded go out the A screw rod of units for sheet material, screw diameter is 60 millimeters, draw ratio 33;
The finished product core material of 100 parts of above-mentioned preparations is added in drier, 80 DEG C of dryings drop into after 4 hours three-layer co-extruded go out the B screw rod of units for sheet material, screw diameter is 90 millimeters, draw ratio 33;
100 parts of nylon 1010s (PA1010) are added in drier, 80 DEG C of dryings dropped into after 4 hours highly stirs in machine, add 20 parts of rutile type titanium white R960,0.2 part of antioxidant four [-(3 ', 5 '-di-t-butyl-4 '-hydroxy phenyl) propionic acid] pentaerythritol ester, 0.2 part of UV absorbers UV-531,0.1 part of light stabilizer two (2,2,6,6-tetramethyl-4-piperidyl) sebacate, stir 30 minutes, rotating speed 600 revs/min, mixing of materials is even; Then above-mentioned material is dropped into three-layer co-extruded go out the C screw rod of units for sheet material, screw diameter is 60 millimeters, draw ratio 33;
Melt extruded at screw extruder by three kinds of materials, extruder temperature controls at 180-240 DEG C simultaneously, and it is 100 revs/min that screw speed controls, and the time of staying of material in screw rod is 2-4 minute.Extexine, sandwich layer and three kinds, endosexine material distribute in distributor, part by weight is 10/70/20, then T-pattern head (die width 1200mm) is entered, finished product S2 is obtained through operations such as cooling, draw, batch, three roller cooling water temperature 60-70 DEG C, hauling speed 3-4 m/min, product thickness 0.33mm, width 1000mm, testing result is in table 1.
Embodiment three:
A kind of polyamide solar energy backboard, its preparation method is as follows:
(1) preparation of grafted polyethylene PE-MA: see embodiment one
(2) preparation of core material (modified polyamide resin composition)
50 parts of nylon 1010s (PA1010) are added in drier, 80 DEG C of dryings dropped into after 4 hours highly stirs in machine, add 50 parts of block copolymerization polypropylene K8303 and 10 part grafted polyethylene PE-MA, 50 parts of rutile type titanium white R960, 0.32 part of antioxidant four [-(3 ', 5 '-di-t-butyl-4 '-hydroxy phenyl) propionic acid] pentaerythritol ester, 0.12 part of UV absorbers UV-531, 0.15 part of light stabilizer two (2, 2, 6, 6-tetramethyl-4-piperidyl) sebacate, stir 30 minutes, rotating speed 600 revs/min, mixing of materials is even, then dropped in double screw extruder by above-mentioned material and melt extrude, material is finished product after cooling and dicing drying,
Twin-screw adopts vented screw, and screw diameter is 75 millimeters, draw ratio 33, and extruder temperature controls at 180-240 DEG C, and it is 100 revs/min that screw speed controls, and the time of staying of material in screw rod is 2-4 minute.
(3) preparation of solar energy backboard
100 parts of nylon 1010s (PA1010) are added in drier, 80 DEG C of dryings dropped into after 4 hours highly stirs in machine, add 20 parts of rutile type titanium white R960,0.2 part of antioxidant four [-(3 ', 5 '-di-t-butyl-4 '-hydroxy phenyl) propionic acid] pentaerythritol ester, 0.2 part of UV absorbers UV-531,0.1 part of light stabilizer two (2,2,6,6-tetramethyl-4-piperidyl) sebacate, stir 30 minutes, rotating speed 600 revs/min, mixing of materials is even; Then above-mentioned material is dropped into three-layer co-extruded go out the A screw rod of units for sheet material, screw diameter is 60 millimeters, draw ratio 33;
The finished product core material of 100 parts of above-mentioned preparations is added in drier, 80 DEG C of dryings drop into after 4 hours three-layer co-extruded go out the B screw rod of units for sheet material, screw diameter is 90 millimeters, draw ratio 33;
100 parts of nylon 1010s (PA1010) are added in drier, 80 DEG C of dryings dropped into after 4 hours highly stirs in machine, add 20 parts of rutile type titanium white R960,0.2 part of antioxidant four [-(3 ', 5 '-di-t-butyl-4 '-hydroxy phenyl) propionic acid] pentaerythritol ester, 0.2 part of UV absorbers UV-531,0.1 part of light stabilizer two (2,2,6,6-tetramethyl-4-piperidyl) sebacate, stir 30 minutes, rotating speed 600 revs/min, mixing of materials is even; Then above-mentioned material is dropped into three-layer co-extruded go out the C screw rod of units for sheet material, screw diameter is 60 millimeters, draw ratio 33.
Melt extruded at screw extruder by three kinds of materials, extruder temperature controls at 180-240 DEG C simultaneously, and it is 100 revs/min that screw speed controls, and the time of staying of material in screw rod is 2-4 minute.Extexine, sandwich layer and three kinds, endosexine material distribute in distributor, and mass ratio is 20/70/10, then enters T-pattern head, die width 1200mm, obtains finished product S3 through operations such as cooling, draw, batch.Three roller cooling water temperature 60-70 DEG C, hauling speed 3-4 m/min, product thickness 0.33mm, width 1000mm, testing result is in table 1.
Comparative example one:
For TPT type backboard (Kunshan Tai Hong company), product structure is PVF/PET/PVF, and thickness 0.33mm, is designated as B1, and testing result is in table 1.
Comparative example two:
For TPE type backboard (aluminium company of Japanese Japan), product structure is PVDF/PET/PE, and thickness 0.33mm, is designated as B2, and testing result is in table 1.
Comparative example three:
For FEVE type backboard (Suzhou Zhong Lai company), product structure is FEVE/PET/FEVE, and thickness 0.30mm, is designated as B3, and testing result is in table 1.
The sign of various backboard in table 1 embodiment and comparative example
* note: splitting power is very large, does not measure.
From the results shown in Table 1, of the present invention three-layer co-extruded go out polyamide solar energy backboard not only there are the shrinkage factor, hot air aging, the insulating properties that meet the requirement of solar energy backboard, also there is the water absorption rate, moisture-vapor transmission, splitting and the wet and heat ageing resistant performance that are better than other backboards, may be used for preparing solar module.
Characterizing method in the various embodiments described above and comparative example adopts following standard:
The standard method of test of melt flow rate (MFR) ASTM D1238 thermoplastic melt flow rate (MFR);
The standard test method of hot strength ASTM D638 plastic tensile performance;
The standard test method of elongation at break ASTM D638 plastic tensile performance;
Bending strength ASTM D790 does not strengthen testing with reinforced plastics bending property;
Simply supported beam notch impact strength ASTM D6110 plastics notched specimen impulse withstand test method;
The method of testing of the impact resistance of Izod notched impact strength ASTM D256 plastics and electrically insulating material;
Shrinkage factor GB/T 13541 electrically uses plastic sheeting test method
Saturated water absorption GB/T 1034 plastic ink absorption test method
The mensuration of moisture-vapor transmission GB/T 21529 plastic sheeting and thin slice moisture-vapor transmission
Thermo-oxidative ageing GB/T7141 plastic hot aging testing method
Hydrothermal aging GB/T 2423.40 electric and electronic product environmental test Part II: test method test Cx: unsaturation high steam steady damp heat
Specific insulation GB/T 1410 solid insulating material specific insulation and surface resistivity test method.
Claims (1)
1. a polyamide solar energy backboard, comprises endosexine, sandwich layer and extexine from inside to outside, it is characterized in that, the mass ratio of described endosexine, sandwich layer and extexine is 10 ~ 20:60 ~ 80:10 ~ 20;
Wherein, described endosexine is made up of polyamide, filler and additive; Described additive is selected from one or more in antioxidant, ultraviolet absorber and light stabilizer;
Described extexine is made up of polyamide, filler and additive; Described additive is selected from one or more in antioxidant, ultraviolet absorber and light stabilizer;
Described sandwich layer is made up of modified polyamide resin composition;
Described modified polyamide resin composition, in mass parts, comprises following component:
Polyamide 5 ~ 75 parts
Acrylic resin 5 ~ 75 parts
Grafted polyethylene 5 ~ 50 parts
Filler 0 ~ 100 part
Additive 0.1 ~ 1.5 part
Described additive is selected from one or more in antioxidant, ultraviolet absorber and light stabilizer; Described acrylic resin is HOPP resin, acrylic resin copolymer or both mixtures;
Described grafted polyethylene is prepared by graft reaction by following component:
Polyvinyl resin 100 parts
Grafting agent 0.5 ~ 2.0 part
Initator 0.03 ~ 0.2 part
Wherein, described polyvinyl resin is homopolymerisation polyethylene, polyethylene copolymer or both mixtures;
The DSC fusing point of described polyvinyl resin is 120 ~ 135 DEG C, and melt flow rate (MFR) is 1 ~ 2 g/10min.
2. solar energy backboard according to claim 1, is characterized in that: the DSC fusing point of described polyamide is 170 ~ 260 DEG C.
3. solar energy backboard according to claim 1, is characterized in that: the DSC fusing point of described acrylic resin is 160 ~ 168 DEG C, and melt flow rate (MFR) is 1 ~ 2 g/10min.
4. solar energy backboard according to claim 1, is characterized in that: described grafting agent is selected from the one in acrylic acid, acrylate, maleic acid, maleic anhydride or methine succinic acid.
5. solar energy backboard according to claim 1, is characterized in that: described initator is di-tert-butyl peroxide or cumyl peroxide.
6. solar energy backboard according to claim 1, is characterized in that: described filler is glass fibre, carbon fiber, talcum powder, mica, wollastonite or titanium dioxide.
7. prepare a method for solar energy backboard as claimed in claim 1, it is characterized in that, comprise the steps:
(1) preparation of grafted polyethylene: by proportioning according to claim 1, polyvinyl resin, grafting agent and initator are mixed, melt extrude processing through screw rod, prepare grafted polyethylene;
(2) preparation of modified polyamide resin composition: remaining components to be joined in above-mentioned grafted polyethylene by proportioning and mix, through screw rod melt-processed, described modified polyamide resin composition can be obtained;
(3) preparation of modified polyamide solar energy backboard: by proportioning the material of preparation endosexine, sandwich layer and extexine joined respectively three-layer co-extruded go out in the A screw rod of units for sheet material, B screw rod and C screw rod, melt extrude at screw extruder simultaneously, through curtain coating, cooling, draw, batch and namely obtain described solar energy backboard.
8. preparation method according to claim 7, is characterized in that: the reactive extrursion temperature that the screw rod in described step (1) melt extrudes processing is 160 ~ 220 DEG C; It is 95 ~ 105 revs/min that screw speed controls.
9. preparation method according to claim 7, is characterized in that: the reactive extrursion temperature that the screw rod in described step (2) and step (3) melt extrudes processing is 180 ~ 240 DEG C; It is 95 ~ 105 revs/min that screw speed controls.
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| ES2700349T3 (en) * | 2014-07-04 | 2019-02-15 | Dsm Ip Assets Bv | Coextruded backsheet for solar cell modules |
| EP3164891B1 (en) * | 2014-07-04 | 2018-08-29 | DSM IP Assets B.V. | Mono-backsheet for solar cell modules |
| CN105462238B (en) * | 2015-12-30 | 2018-07-03 | 苏州度辰新材料有限公司 | It is a kind of for extrusion type backboard of photovoltaic cell and preparation method thereof |
| CN105751644B (en) * | 2016-03-15 | 2017-10-31 | 苏州鼎九新材料科技有限公司 | A kind of polyamide five-layer co-squeezing composite membrane of borosilicate cooperative flame retardant and preparation method thereof |
| CN105870237B (en) * | 2016-04-18 | 2017-05-03 | 苏州赛伍应用技术有限公司 | Co-extruded one-time formed backplate with three-layer structure for solar cell module |
| CN106279904A (en) * | 2016-08-18 | 2017-01-04 | 苏州度辰新材料有限公司 | A kind of extrusion type solar energy backboard and preparation method thereof |
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| CN102569452A (en) * | 2010-10-20 | 2012-07-11 | 苏州尚善新材料科技有限公司 | Polymer back panel of solar battery assembly and manufacture method of polymer back panel |
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| CN102569452A (en) * | 2010-10-20 | 2012-07-11 | 苏州尚善新材料科技有限公司 | Polymer back panel of solar battery assembly and manufacture method of polymer back panel |
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