CN103066141B - Modified polypropylene resin composition and solar energy rear panel made of the same - Google Patents
Modified polypropylene resin composition and solar energy rear panel made of the same Download PDFInfo
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- CN103066141B CN103066141B CN201210582655.5A CN201210582655A CN103066141B CN 103066141 B CN103066141 B CN 103066141B CN 201210582655 A CN201210582655 A CN 201210582655A CN 103066141 B CN103066141 B CN 103066141B
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Abstract
The invention discloses a solar energy rear panel and a preparation method of the solar energy rear panel. The solar energy rear panel comprises an inner surface layer, a core layer and an outer surface layer from inside to outside. By a mass rate, the inner surface layer is 10%-20%, the core layer is 20%-40%, and the outer surface layer is 40%-60%. The inner surface layer and the outer surface layer are made of polyamide resin, fillings and additive, and the core layer is made of the modified polypropylene resin composition. The modified polypropylene resin composition comprises the following components: 100 parts of polypropylene resin, 5-50 parts of graft polyethylene, 0-2.5 parts of additive and 0-100 parts of fillings. Meanwhile, the invention discloses the novel modified polypropylene resin composition used for the solar energy rear panel. Due to the novel modified polypropylene resin composition, a final product obtained has good low temperature resistance and impact resistance, meanwhile anti-aging performance and especially has performance of humidity resistance and resistance to aging. The solar energy rear panel prepared by the novel modified polypropylene resin composition is better than other rear panels in terms of water absorption, water vapor permeability, and interlaminar peeling and has excellent electrical insulating property. A shrinking rate, hot air aging and insulation property required by the solar energy rear panel are met, and the novel modified polypropylene resin composition can be used for solar energy battery components manufacturing .
Description
Technical field
The present invention relates to a kind of solar module polymer backboard, be specifically related to a kind of modified polypropylene resin solar energy backboard and preparation method thereof, belong to solar module manufacturing technology field.
Background technology
Solar energy is the regenerative resource that resource is the abundantest, and have unique advantage and huge developing and utilizingpotentiality, solar power generation is a new technology in Solar use approach.Solar photovoltaic system is made up of solar battery group, controller for solar, storage battery etc., solar module is the core in solar power system, wherein solar energy backboard is the structural encapsulating material of solar module, the useful 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.
The main backboard used is multi-layer compound structure both at home and abroad at present, all for base material film with polyester film (BOPET), laminating fluorine material forms as pvf film (PVF), PVDF membrane (PVDF) or coating fluorocarbon resin (FEVE) etc. manufacture, price is more expensive, complex manufacturing, electrical insulating property, cementability are poor, easily brittle.From the material of backboard, existing backboard is all generally for base material with polyester film (BOPET), and there is researcher to improve polyester film, Japanese Patent Laid-Open 2007-007885 publication, Japanese Patent Laid-Open 2006-306910 publication proposes and uses containing 2, the polyester film of 6-naphthalene dicarboxylic acids is as the technical scheme of solar energy back veneer material, a kind of novel layered polyester film that with the addition of Titanium Dioxide Rutile Top grade particle is disclosed in Chinese invention patent application CN102365172A, but the cohesive force of itself and adjacent EVA adhesive film cannot ensure, and due to material structure feature, it is high that mylar is difficult to overcome water absorption rate, the defect of wet and heat ageing resistant poor performance (embrittlement), be difficult to the performance requirement reaching solar energy backboard.
Acrylic resin has high strength, high-fire resistance, the dielectric property of higher resistance to wear, excellent electrical insulating property, stress cracking resistance and low creep properties, low moisture-vapor transmission and excellence, and owing to there is no polar functional group in the molecular chain-end of propylene, therefore water absorption rate is extremely low, the ageing-resistant performance requirement of solar module can be met, and be expected to become important back veneer material.But its cold resistance is poor, fragile under low temperature disconnected, directly as the material of solar energy backboard base material, then cannot meet its low-temperature impact resistance.
Therefore, develop the resin combination of a kind of low water absorption, low brittle temperature and high-insulativity, and prepare wet and heat ageing resistant, cementability and the mechanical performance with excellence by it, be applicable to industrialized solar energy backboard necessary.
Summary of the invention
The object of this invention is to provide a kind of solar energy backboard and preparation method thereof, described backboard has high interlaminar strength, excellent wet and heat ageing resistant, cementability and mechanical insulated 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 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: 20 ~ 40: 40 ~ 60;
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 polypropylene resin composition;
Described modified polypropylene resin composition, in mass parts, comprises following component:
Acrylic resin 100 parts
Grafted polyethylene 5 ~ 50 parts
Filler 0 ~ 100 part
Additive 0 ~ 2.5 part
Described acrylic resin is HOPP resin, acrylic resin copolymer or both mixtures, and the DSC fusing point of acrylic resin is 160 ~ 168 DEG C, and melt flow rate (MFR) is 1 ~ 2 g/10min;
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
Described polyvinyl resin is homopolymerisation polyethylene resin, polyethylene copolymer resin or both mixtures, and the DSC fusing point of polyvinyl resin is 120 ~ 135 DEG C, and melt flow rate (MFR) is 1 ~ 2 g/10min.
In technique scheme, described grafting agent is 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 preparation of above-mentioned solar energy backboard comprises the steps:
(1) by described proportioning, polyvinyl resin, grafting agent and initator are mixed, melt extrude processing through screw rod, prepare grafted polyethylene;
(2) acrylic resin, filler and additive to be joined in above-mentioned grafted polyethylene by proportioning and mix, through screw rod melt-processed, described modified polypropylene resin composition can be obtained;
(3) 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 above-mentioned preparation method, the reactive extrursion temperature that the screw rod in described step (3) melt extrudes processing is 180 ~ 240 DEG C, and it is 95 ~ 105 revs/min that screw speed controls, and the time of staying of material in screw rod is 2-4 minute.
The present invention asks to protect a kind of modified polypropylene resin composition and method of making the same simultaneously.
The technical scheme adopted is, a kind of modified polypropylene resin composition, in mass parts, comprises following component:
Acrylic resin 100 parts
Grafted polyethylene 5 ~ 50 parts
Filler 0 ~ 100 part
Additive 0 ~ 2.5 part
Described acrylic resin is HOPP resin, acrylic resin copolymer or both mixtures, and the DSC fusing point of acrylic resin is 160 ~ 168 DEG C, and melt flow rate (MFR) is 1 ~ 2 g/10min;
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
Described polyvinyl resin is homopolymerisation polyethylene resin, polyethylene copolymer resin or both mixtures, and the DSC fusing point of polyvinyl resin is 120 ~ 135 DEG C, and melt flow rate (MFR) is 1 ~ 2 g/10min.
In technique scheme, described grafting agent is 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 preparation method of above-mentioned modified polypropylene resin composition, comprises the steps:
(1) by proportioning, polyvinyl resin, grafting agent and initator are mixed, melt extrude processing through screw rod, prepare grafted polyethylene;
(2) remaining components to be joined in above-mentioned grafted polyethylene by proportioning and mix, through screw rod melt-processed, described resin combination can be obtained.
In above-mentioned preparation method, 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) melt extrudes processing is 180 ~ 240 DEG C; It is 95 ~ 105 revs/min that screw speed controls.
Principle of the present invention: the polypropylene, polyethylene alloy that the present invention manufactures from solubilising Theoretical Design according to high polymer alloy latest theories and macromolecule, due to introduce high molecular crosslink element thus goods while obtaining excellent low-temperature impact resistance, also obtain ageing-resistant, the performance of especially high temperature resistant hydrothermal aging.It is that it can meet the processing request of solar panel that the present invention adopts fusing point (DSC) to be greater than the polypropylene of 150 DEG C or polypropylene copolymer or its blend as one of the reason of main material of the present invention.Introduction due to grafting agent makes part polyethylene be cross-linked, and forms the crosslinked network structure being similar to rubber-like, with tenacity-increased profax, makes its performance obtaining excellent low-temperature impact resistance and high temperature resistant hydrothermal aging performance.By test (testing standard ASTM D6110), its simply supported beam notch shock (-20 DEG C) can reach 15 KJ/m
2, far away higher than 2.55 KJ/m of plain polypropylene material
2, thus can be used as solar energy backboard base material.In addition, the brittle temperature of resin combination of the present invention is all less than-40 DEG C, brittle temperature without the block copolymerization polypropylene of toughening modifying only has-30 DEG C, and its brittle temperature of resin combination LLDPE being added block copolymerization polypropylene blending and modifying can only reach-20 DEG C.
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 present invention is not particularly limited for the kind of antioxidant.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 UV absorbers and light stabilizer.Preferred ultra-violet absorber is UV-531, and preferred light stabilizer is two (2,2,6,6-tetramethyl-4-piperidyl) sebacates.Preferably, light stabilizer coordinates UV absorbers 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.
In the present invention, endosexine contacts with the EVA adhesive film in solar module, and extexine is positioned at the outside of solar module.The polyamide that endosexine and skin materials are selected is the condensation polymer of amide structure unit (-RCONH-) as main polymer chain of repetition, there is higher hot strength, impact strength, excellent wear-resisting, self-lubricating property, and with the EVA(ethylene-vinyl acetate copolymer as encapsulating material) glued membrane and have good cementability as the silica gel be filled with a sealing.
In addition, the present invention adopts polar monomer, as grafting agent under the effect of initator with polyethylene generation graft reaction.Grafted polyethylene both had good compatibility with acrylic resin, can have good cementability again with adjacent polyamide, kept splitting power good between trilaminate material.
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 resin combination for solar energy backboard newly, based on acrylic resin, carry out toughness reinforcing with grafting agent grafted polyethylene flexibilizer, the final products obtained are while having excellent low-temperature impact resistance, also have ageing-resistant, especially the performance of wet and heat ageing resistant, has the electrical insulating property of low saturated water absorption, low moisture-vapor transmission and excellence simultaneously, can be used for manufacturing solar energy backboard.
2. the solar energy backboard prepared by modified polypropylene resin composition disclosed by the invention is while having excellent splitting power, also there is the performance of high temperature resistant hydrothermal aging, with EVA layer and silica gel, there is good cementability simultaneously, can be used for manufacturing solar module.
3. preparation method of the present invention is simple, and cost is lower, is suitable for applying.
Embodiment
Below in conjunction with embodiment, the invention will be further described:
Embodiment one:
A kind of modified polypropylene resin composition, 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 (Aksu, Tianjin company) adds in blender after measuring respectively and carries out mixing homogenizing, homogenizing drops into after two hours in double screw extruder carries out melt extruding granulation; 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.Wherein screw diameter is 75 millimeters, draw ratio 33, and extruder temperature controls at 160-220 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 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 modified polypropylene resin composition: by 67 parts of polypropylene K8303(Beijing Yanshan Petrochemical Companies), 33 parts of grafted polyethylene PE-MA, 20 parts of rutile type titanium white R960(du pont company), 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) mix after measuring respectively, drop in double screw extruder and carry out melt extruding (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), material is finished product S1 after cooling and dicing drying.
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.
Embodiment two:
A kind of modified polypropylene resin composition, its preparation method is as follows:
(1) preparation of grafted polyethylene PE-MA: see embodiment one
(2) preparation of modified polypropylene resin composition: by 75 parts of block copolymerization polypropylene K8303, 25 parts of grafted polyethylene PE-MA, 50 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, 0.2 part of UV absorbers UV-531, 0.1 part of light stabilizer two (2, 2, 6, 6-tetramethyl-4-piperidyl) sebacate carries out melt extruding that (twin-screw adopts vented screw than mixing in rear input double screw extruder by metering, screw diameter is 75 millimeters, draw ratio 33, extruder temperature controls at 180-240 DEG C, it is 100 revs/min that screw speed controls, the time of staying of material in screw rod is 2-4 minute), material is finished product S2 after cooling and dicing drying.
Embodiment three:
A kind of modified polypropylene resin composition, its preparation method is as follows:
(1) preparation of grafted polyethylene PE-MA: see embodiment one
(2) preparation of modified polypropylene resin composition: by 96 parts of polypropylene 1300 and 4 parts of grafted polyethylene PE-MA, 40 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, 0.25 part of UV absorbers UV-531, 0.15 part of light stabilizer two (2, 2, 6, 6-tetramethyl-4-piperidyl) sebacate mixes in rear input double screw extruder and carries out melt extruding that (twin-screw adopts vented screw, screw diameter is 75 millimeters, draw ratio 33, extruder temperature controls at 180-240 DEG C, it is 100 revs/min that screw speed controls, the time of staying of material in screw rod is 2-4 minute), material is finished product S3 after cooling and dicing drying.
Embodiment four:
A kind of modified polyamide resin composition, its preparation method is as follows:
(1) preparation of grafted polyethylene PE-MA: see embodiment one
(2) preparation of modified polypropylene resin composition: by 50 parts of block copolymerization polypropylene K8303, 50 parts of grafted polyethylene PE-MA, 60 parts of rutile type titanium white R960, 0.3 part of antioxidant four [-(3 ', 5 '-di-t-butyl-4 '-hydroxy phenyl) propionic acid] pentaerythritol ester, 0.25 part of UV absorbers UV-531, 0.15 part of light stabilizer two (2, 2, 6, 6-tetramethyl-4-piperidyl) sebacate mix after by carrying out in input double screw extruder melt extruding, (twin-screw adopts vented screw, screw diameter is 75 millimeters, draw ratio 33, extruder temperature controls at 180-240 DEG C, it is 100 revs/min that screw speed controls, the time of staying of material in screw rod is 2-4 minute), material is finished product S4 after cooling and dicing drying.
Embodiment five:
A polypropylene solar energy backboard for coextrusion, its preparation method is as follows:
(1) 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.
(2) the finished product S1 that prepared by embodiment one drop into three-layer co-extruded go out the B screw rod of units for sheet material, screw diameter is 90 millimeters, draw ratio 33.
(3) 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.
(4) 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.Endosexine, sandwich layer and extexine three kinds of materials distribute in distributor, part by weight is 10/40/50, then T-pattern head (die width 1200mm) is entered, finished product S5 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 six:
A polypropylene solar energy backboard for coextrusion, its preparation method is as follows:
(1) 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.
(2) the finished product S2 that prepared by embodiment two drop into three-layer co-extruded go out the B screw rod of units for sheet material, screw diameter is 90 millimeters, draw ratio 33.
(3) 100 parts of nylon 1010s (PA1010) are added in drier, material dropped into after 4 hours by 80 DEG C of dryings highly to be stirred 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.
(4) 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.Endosexine, sandwich layer and extexine three kinds of materials distribute in distributor, and ratio is 20/40/40, then enters T-pattern head, die width 1200mm, finished product S6 is obtained, three roller cooling water temperature 60-70 DEG C, hauling speed 3-4 m/min through operations such as cooling, draw, batch.Product thickness 0.33mm, width 1000mm.Testing result is in table 1.
Embodiment seven:
A polypropylene solar energy backboard for coextrusion, its preparation method is as follows:
(1) 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.
(2) the finished product S3 that prepared by embodiment three drop into three-layer co-extruded go out the B screw rod of units for sheet material, screw diameter is 90 millimeters, draw ratio 33.
(3) 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.
(4) 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.Endosexine, sandwich layer and extexine three kinds of materials distribute in distributor, and ratio is 20/30/50, then enters T-pattern head, die width 1200mm, finished product S7 is obtained, three roller cooling water temperature 60-70 DEG C, hauling speed 3-4 m/min through operations such as cooling, draw, batch.Product thickness 0.33mm, width 1000mm.Testing result is in table 1.
Embodiment eight:
A polypropylene solar energy backboard for coextrusion, its preparation method is as follows:
(1) 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.
(2) the finished product S4 that prepared by embodiment four drop into three-layer co-extruded go out the B screw rod of units for sheet material, screw diameter is 90 millimeters, draw ratio 33.
(3) add in drier by 100 parts of nylon 1010s (PA1010), 80 DEG C of dryings 4 hours, testing moisture content (90 DEG C, 3 hours) is less than 0.1%.Then material is dropped 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 C screw rod of units for sheet material, screw diameter is 60 millimeters, draw ratio 33.
(4) 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.Endosexine, sandwich layer and extexine three kinds of materials distribute in distributor, and ratio is 20/40/40, then enters T-pattern head, die width 1200mm, finished product S8 is obtained, three roller cooling water temperature 60-70 DEG C, hauling speed 3-4 m/min through operations such as cooling, draw, batch.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 table 1 embodiment and comparative example dorsulum
From the results shown in Table 1, three-layer co-extruded sunny energy backboard of the present invention not only have the shrinkage, hot air aging, the insulation property 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 thermoplastics 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 electrical insulating material;
Shrinkage GB/T 13541 electrically uses plastic film test method
Saturated water absorption GB/T 1034 plastic ink absorption test method
The mensuration of moisture-vapor transmission GB/T 21529 plastic film 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 (5)
1. a solar energy backboard, is made up of 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: 20 ~ 40: 40 ~ 60;
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 polypropylene resin composition;
Described modified polypropylene resin composition, in mass parts, comprises following component:
Acrylic resin 100 parts
Grafted polyethylene 5 ~ 50 parts
Filler 0 ~ 100 part
Additive 0 ~ 2.5 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, and the DSC fusing point of acrylic resin is 160 ~ 168 DEG C, and melt flow rate (MFR) is 1 ~ 2 g/10min;
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
Described polyvinyl resin is homopolymerisation polyethylene resin, polyethylene copolymer resin or both mixtures, and the DSC fusing point of 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: described grafting agent is acrylic acid, acrylate, maleic acid, maleic anhydride or methine succinic acid.
3. solar energy backboard according to claim 1, is characterized in that: described initator is di-tert-butyl peroxide or cumyl peroxide.
4. 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.
5. a preparation method for solar energy backboard as claimed in claim 1, is characterized in that, comprise the steps:
(1) by proportioning according to claim 1, polyvinyl resin, grafting agent and initator are mixed, melt extrude processing through screw rod, prepare grafted polyethylene;
(2) acrylic resin, filler and additive to be joined in above-mentioned grafted polyethylene by proportioning and mix, through screw rod melt-processed, described modified polypropylene resin composition can be obtained;
(3) 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.
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| CN201210582655.5A CN103066141B (en) | 2012-12-28 | 2012-12-28 | Modified polypropylene resin composition and solar energy rear panel made of the same |
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| CN201210582655.5A CN103066141B (en) | 2012-12-28 | 2012-12-28 | Modified polypropylene resin composition and solar energy rear panel made of the same |
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| CN103066141B true CN103066141B (en) | 2015-07-15 |
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| CN103715288A (en) * | 2014-01-08 | 2014-04-09 | 苏州尚善新材料科技有限公司 | Humidity-resistant and heat-resistant solar cell panel and manufacturing method thereof |
| CN103715287A (en) * | 2014-01-08 | 2014-04-09 | 苏州尚善新材料科技有限公司 | Humidity-resistant and heat-resistant solar cell panel and manufacturing method thereof |
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| 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 |
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| CN108276665A (en) * | 2018-01-09 | 2018-07-13 | 浙江中聚材料有限公司 | A kind of coextrusion type solar energy backboard and preparation method thereof |
| CN109206748B (en) * | 2018-08-29 | 2021-06-08 | 天津大学 | Polypropylene-based composite insulating material and preparation method thereof |
| CN112662064A (en) * | 2020-12-22 | 2021-04-16 | 南通新帝克单丝科技股份有限公司 | Anti-aging polypropylene master batch and production method thereof |
| CN113717470B (en) * | 2021-11-01 | 2022-02-08 | 苏州度辰新材料有限公司 | Permanent antistatic master batch for polypropylene film, preparation method thereof and film |
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