CN105097998A - Preparation method and application of front solar cell packaging film - Google Patents
Preparation method and application of front solar cell packaging film Download PDFInfo
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- CN105097998A CN105097998A CN201510552741.5A CN201510552741A CN105097998A CN 105097998 A CN105097998 A CN 105097998A CN 201510552741 A CN201510552741 A CN 201510552741A CN 105097998 A CN105097998 A CN 105097998A
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- film
- solar cell
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- cephacoria
- kerosene
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- 238000002360 preparation method Methods 0.000 title claims abstract description 28
- 229920006280 packaging film Polymers 0.000 title abstract 6
- 239000012785 packaging film Substances 0.000 title abstract 6
- 238000001704 evaporation Methods 0.000 claims abstract description 34
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 28
- 239000000843 powder Substances 0.000 claims abstract description 28
- 239000002904 solvent Substances 0.000 claims abstract description 27
- 239000000203 mixture Substances 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 17
- 238000000748 compression moulding Methods 0.000 claims abstract description 9
- 230000008020 evaporation Effects 0.000 claims description 31
- 238000010438 heat treatment Methods 0.000 claims description 30
- 239000003350 kerosene Substances 0.000 claims description 25
- 239000000463 material Substances 0.000 claims description 19
- 239000000758 substrate Substances 0.000 claims description 17
- 239000003822 epoxy resin Substances 0.000 claims description 14
- 229920000647 polyepoxide Polymers 0.000 claims description 14
- 230000008569 process Effects 0.000 claims description 14
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 10
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 9
- 150000001875 compounds Chemical class 0.000 claims description 9
- 239000006184 cosolvent Substances 0.000 claims description 9
- 230000004048 modification Effects 0.000 claims description 9
- 238000012986 modification Methods 0.000 claims description 9
- 239000004094 surface-active agent Substances 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000000465 moulding Methods 0.000 claims description 8
- 238000009738 saturating Methods 0.000 claims description 8
- 238000010792 warming Methods 0.000 claims description 8
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 7
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 7
- 230000015572 biosynthetic process Effects 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 7
- 239000001257 hydrogen Substances 0.000 claims description 7
- 229910052739 hydrogen Inorganic materials 0.000 claims description 7
- 239000001301 oxygen Substances 0.000 claims description 7
- 229910052760 oxygen Inorganic materials 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 7
- SVTBMSDMJJWYQN-UHFFFAOYSA-N 2-methylpentane-2,4-diol Chemical compound CC(O)CC(C)(C)O SVTBMSDMJJWYQN-UHFFFAOYSA-N 0.000 claims description 6
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 6
- LWHQXUODFPPQTL-UHFFFAOYSA-M sodium;2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-pentadecafluorooctanoate Chemical compound [Na+].[O-]C(=O)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F LWHQXUODFPPQTL-UHFFFAOYSA-M 0.000 claims description 4
- LFRJGOFQPHQKKA-UHFFFAOYSA-N [Na].OS(=O)(=O)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F Chemical compound [Na].OS(=O)(=O)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F LFRJGOFQPHQKKA-UHFFFAOYSA-N 0.000 claims description 3
- 229940051250 hexylene glycol Drugs 0.000 claims description 3
- 150000004291 polyenes Chemical class 0.000 claims description 3
- 239000012298 atmosphere Substances 0.000 claims description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 abstract description 14
- 238000002834 transmittance Methods 0.000 abstract description 10
- -1 polytetrafluoroethylene Polymers 0.000 abstract description 4
- 238000002156 mixing Methods 0.000 abstract description 3
- 238000005299 abrasion Methods 0.000 abstract 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- 229910052593 corundum Inorganic materials 0.000 abstract 1
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum oxide Inorganic materials [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 abstract 1
- 229910001635 magnesium fluoride Inorganic materials 0.000 abstract 1
- 238000007669 thermal treatment Methods 0.000 abstract 1
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 1
- 239000010408 film Substances 0.000 description 53
- 210000004027 cell Anatomy 0.000 description 43
- 229940058401 polytetrafluoroethylene Drugs 0.000 description 13
- 230000000052 comparative effect Effects 0.000 description 10
- 238000005538 encapsulation Methods 0.000 description 5
- 239000010410 layer Substances 0.000 description 5
- 239000012299 nitrogen atmosphere Substances 0.000 description 5
- 239000005038 ethylene vinyl acetate Substances 0.000 description 4
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 4
- 239000011241 protective layer Substances 0.000 description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical group [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 238000011417 postcuring Methods 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 229910004613 CdTe Inorganic materials 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 210000003850 cellular structure Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 229920002313 fluoropolymer Polymers 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/048—Encapsulation of modules
- H01L31/0481—Encapsulation of modules characterised by the composition of the encapsulation material
-
- 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
Abstract
The invention provides a preparation method and an application of a front solar cell packaging film. The method comprises the following steps: firstly, mixing polytetrafluoroethylene powder with a complex solvent with specific components evenly; sequentially carrying out constant-temperature curing, compression molding, high-temperature thermal treatment, rapid cooling, slicing and plasma modified treatment to prepare a front film base; and sequentially evaporating an MgF2 film, a TiO2-ZrO2-La2O3 mixture film and an Al2O3 film to form the final front solar cell packaging film. The front solar cell packaging film has high light transmittance; and the light transmittance at 300-1200nm can be up to over 90.5%. Furthermore, the front solar cell packaging film provided by the invention also has excellent high-temperature resistance, abrasion resistance and weather fastness and good mechanical property, therefore, the front solar cell packaging film provided by the invention can be applicable to various extreme conditions which an unmanned aerial vehicle can face, and meets the work environment requirements of the unmanned aerial vehicle.
Description
Technical field
The present invention relates to a kind of preparation method of solar cell package cephacoria, and relate to the application of solar cell package cephacoria obtained by this method in unmanned plane weather resistant solar cell, belong to technical field of polymer materials.
Technical background
Under the overall background of global warming, the deterioration of the ecological environment, find the substitute of fossil energy, improve energy resource structure and become the focus paid close attention to various countries.In many clean energy resource alternatives, solar energy is considered to one of the most potential energy in future with the feature such as clean, safety, resource are sufficient, is subject to very big attention and the support of countries in the world.For the development and utilization of solar energy, most is representational is solar cell, in solar cell family, flexible thin-film solar cell has the advantages such as light, soft, thin, and having better thermal adaptability, low-light conditions and low light level performance, its development prospect receives the extensive concern of all circles.At present, the thin-film solar cells of main flow has CIGS, GaAs, CdTe etc., and in these hull cells above-mentioned, CIGS is that Performance and Cost Modeling combines best flexible thin-film solar cell, and its typical assembly conversion efficiency is more than 15%.
For CIGS hull cell, encapsulation cephacoria is the important auxiliary part that its performance is given full play to, and the selection of material becomes the key factor determining encapsulation cephacoria quality naturally.In present solar module, use maximum encapsulating materials to be ethylene-vinyl acetate copolymer (EVA), thermal endurance and creep resistant is improved by adding crosslinking agent wherein, interpolation antioxidant and stabilizer improve resistance to ag(e)ing, add tackifier and improve adhesion strength, substantially can meet the instructions for use of solar module.But because EVA resin is not high to the barrier property of moisture, in long-term outdoor use procedure, the moisture infiltrated in assembly often makes tackifier lose efficacy, cause encapsulating material can not be lasting to the adhesion strength of front-back baseboard.
Use EVA as the above-mentioned defect existing for hull cell encapsulation cephacoria to overcome, Chinese patent literature CN102339883A discloses a kind of photovoltaic module, comprising: substrate, and described substrate is made up of galss fiber reinforced resin; Photovoltaic layer; described photovoltaic layer is located on the upper surface of described substrate, and wherein said photovoltaic layer comprises at least one photovoltaic cell and transparent protective layer, and described protective layer covers on described photovoltaic layer; described protective layer by fluoroplastics, as polytetrafluoroethylene (PTFE) is made.Above-mentioned technology due to employ there is excellent intensity, durability, weatherability and water resistance PTFE as protective layer, therefore can realize the available protecting to photovoltaic layer, extend useful life of photovoltaic module.But, using PTFE film as encapsulation cephacoria still Problems existing be, because the light transmittance of PTFE self is lower, usually to only have about 40%, thus cause the efficiency of light absorption of the photovoltaic cell in above-mentioned technology less, be difficult to meet power demands.Therefore, how improving PTFE and encapsulate the light transmittance of cephacoria, to strengthen the absorption efficiency of photovoltaic cell to light, is those skilled in the art's technical barriers urgently to be resolved hurrily.
As everyone knows, unmanned plane is widely applied in recent years, and its operating characteristic easy-to-use flexibly makes it still have vast potential for future development.In general, the energy supplying system of unmanned plane is lithium battery.Although in various energy storage device, lithium battery has proper mass-energy ratio, mass-power ratio, but for unmanned plane, the performance of lithium battery directly determines its ability of continuing a journey for unmanned plane, and this has also just become the bottleneck of restriction unmanned plane single operating time.If CIGS photovoltaic cell component can be applied to the positions such as unmanned plane wing, think that the operation of unmanned plane provides part and even whole power, then significantly will improve the combination property of existing unmanned plane, its application also can be expanded further.
Summary of the invention
What the present invention solved is that prior art uses PTFE as the low problem of the battery absorptance existing for solar cell package cephacoria, and then provides a kind of preparation method and the application thereof with the solar cell package cephacoria of high transmission rate and weatherability.
The technical scheme that the present invention solves the problems of the technologies described above employing is:
A preparation method for solar cell package cephacoria, comprises the steps:
(1) kerosene is mixed with surfactant and/or cosolvent, form double solvents;
(2) double solvents of step (1) is added in polytetrafluorethylepowder powder, after stirring under the constant temperature of 10-18 DEG C, with the speed of 20-80r/min, cooked at constant 8-12h at 24-40 DEG C in inert atmosphere, obtains slaking material again;
(3) compression molding is carried out to the slaking material of step (2);
(4), after the finished product of step (3) being left standstill 24h, heat-treat, and keep 24-36h; Described heat treated heating schedule is: from the heating rates of 25 DEG C to 320 DEG C be 20 DEG C/heating rate of min, 320-330 DEG C is 5 DEG C/heating rate of min, 330-370 DEG C is 10 DEG C/min;
(5) cool the sample after step (4) process fast, and dry;
(6) cut into slices to the sample after oven dry in step (5), the thickness of section is 50-100 μm;
(7) adopt the section to step (6) of hydrogen plasma, ozone plasma to carry out modification successively, obtain high modified ptfe film thoroughly;
(8) 5 × 10 are less than in vacuum degree
-3under the condition of Pa, the saturating modified ptfe film of high step (7) obtained is warming up to 140-145 DEG C, forms cephacoria substrate;
(9) MgF of evaporation 90-95nm in described cephacoria substrate
2film;
(10) being filled with oxygen to vacuum degree is (2-2.5) × 10
-2pa, at described MgF
2the TiO of evaporation 500-800nm on film
2-ZrO
2-La
2o
3mixture film;
(11) at described TiO
2-ZrO
2-La
2o
3the Al of evaporation 70-80nm on mixture film
2o
3film, the described solar cell package cephacoria of final formation.
In step (1), described cosolvent is one or more in toluene, hexylene glycol or ethyl acetate; Described surfactant is one or more in polyene-based succimide, Sodium perfluorooctanoate or perfluoro octyl sulfonic acid sodium.
In step (1), the mass ratio of described cosolvent or described surfactant and described kerosene is 0.1: (4-5); Or the quality sum of described cosolvent and described surfactant and the mass ratio 0.1 of described kerosene: (4-5).
In step (2), the purity of described polytetrafluorethylepowder powder is 99.9%, degree of crystallinity≤80%, particle diameter are 0.1-0.2 μm, molecular weight is 7,000,000-1,000 ten thousand; The mass ratio of described polytetrafluorethylepowder powder and described kerosene is (20-25): 1.
In step (3), the pressure of pre-molding is 40-65MPa, and squeeze time is 1-10min, and pressurize 5-20min.
In step (5), the water of-5 ~ 5 DEG C is used to cool fast the sample after step (4) process, and in the post-drying of 0.5-1h.
Described MgF
2the evaporation rate of film is 0.2-0.3nm/s; Described TiO
2-ZrO
2-La
2o
3the evaporation rate of mixture film is 0.2-0.4nm/s; Described Al
2o
3the evaporation rate of film is 0.2-0.3nm/s.
Also comprise and add epoxy resin in described double solvents, stir to obtain compound, then be added in described polytetrafluorethylepowder powder by described compound.
The mass ratio of described epoxy resin and described kerosene is 2: 5; Described epoxy resin is bisphenol A type epoxy resin.
The application of the protecting solar cell cephacoria obtained by above-mentioned preparation method in unmanned plane weather resistant solar cell.
The preparation method of solar cell package cephacoria of the present invention, kerosene is mixed formed double solvents with surfactant and/or cosolvent and is added in polytetrafluorethylepowder powder by step (2), slowly stir under 10-18 DEG C of constant temperature, be conducive to like this optimizing putting in order of polytetrafluoroethylene molecule, thus light transmittance and the film-formation result of PTFE film can be improved.The finished product of step of the present invention (4) to step (3) is heat-treated, to utilize the high temperature of 330-370 DEG C, finished product is shaped, more contributing to the shaping performance improving molecular structure by adopting specific temperature-programmed mode, improving the structure of molecule.Preparation method of the present invention is in step (7), using plasma carries out modification to the section obtained, its role is to the surface activity improving section, to strengthen its adhesion strength, realize the strong bonding between poly tetrafluoroethylene and photovoltaic cell.The present invention is by MgF on the surface of the saturating modified ptfe film of height successively evaporation
2film, TiO
2-ZrO
2-La
2o
3mixture film and Al
2o
3film, can strengthen the light transmission of encapsulation cephacoria, mar proof and block-water performance further.
As preferred embodiment, preparation method of the present invention also comprises the step adding epoxy resin in double solvents, is conducive to the adding of epoxy resin the curing performance strengthening compound, is convenient to the curing molding of polytetrafluorethylepowder powder.
With use PTFE film as compared with solar cell package cephacoria in prior art, the light transmittance of the solar cell package cephacoria obtained according to preparation method of the present invention is greatly improved, and the light transmittance under 300-1200nm can reach more than 90.5%.And, solar cell package cephacoria of the present invention also has excellent high temperature resistant, wear-resistant, weatherability, and its good mechanical property, thus the solar cell package cephacoria making the present invention obtain can be applicable to unmanned plane may faced by various extreme conditions, meet the operational environment demand of unmanned plane completely.
Embodiment
Below in conjunction with specific embodiment, the preparation method to solar cell package cephacoria provided by the invention is described in detail.In the following embodiments, wt% represents mass percentage.
Embodiment 1
The preparation method of the solar cell package cephacoria described in the present embodiment, comprises the steps:
(1) by mass ratio be 4: 0.1 kerosene mix with Sodium perfluorooctanoate, formed double solvents; In described kerosene, the content of isoparaffin is 90wt%, and the content of n-alkane is 8wt%;
(2) double solvents of step (1) is added in polytetrafluorethylepowder powder, stirs after 0.5h under the constant temperature of 14 DEG C, with the speed of 20r/min, then in nitrogen atmosphere, under 24 DEG C of constant temperature slaking 10h, obtain slaking material;
Wherein, the purity of described polytetrafluorethylepowder powder is 99.9%, degree of crystallinity≤80%, particle diameter are 0.1-0.2 μm, molecular weight is 7,000,000, and the mass ratio of the kerosene in polytetrafluorethylepowder powder and double solvents is 20: 1;
(3) carry out compression molding process to the slaking material of step (2), the pressure of pre-molding is 40MPa, and squeeze time is 5.5min, and pressurize 5min;
(4) adopt the finished product of mode to step (3) of temperature programming to heat-treat, and keep 30h; Described heating schedule is: from the heating rates of 25 DEG C to 320 DEG C be 20 DEG C/heating rate of min, 320-330 DEG C is 5 DEG C/heating rate of min, 330-370 DEG C is 10 DEG C/min;
(5) water of-5 DEG C is adopted to cool the sample after step (4) process fast, and in the post-drying of 0.5h;
(6) cut into slices to the sample after oven dry in step (5), the slice thickness obtained is 50 μm;
(7) use the section to step (6) of hydrogen plasma, ozone plasma to carry out modification successively, obtain high modified ptfe film thoroughly;
(8) 5 × 10 are less than in vacuum degree
-3under the condition of Pa, the saturating modified ptfe film of high step (7) obtained is warming up to 140 DEG C, forms cephacoria substrate;
(9) with the evaporation rate of 0.25nm/s, the MgF of evaporation 90nm in described cephacoria substrate
2film;
(10) being filled with oxygen to vacuum degree is 2.5 × 10
-2pa, with the speed of 0.3nm/s at described MgF
2the TiO of evaporation 650nm on film
2-ZrO
2-La
2o
3mixture film;
(11) at described TiO
2-ZrO
2-La
2o
3on mixture film, with the Al of the speed evaporation 70nm of 0.2nm/s
2o
3film, the described solar cell package cephacoria of final formation.
Embodiment 2
The preparation method of the solar cell package cephacoria described in the present embodiment, comprises the steps:
(1) by mass ratio be 5: 0.1 kerosene mix with toluene, formed double solvents; In described kerosene, the content of isoparaffin is 86wt%, and the content of n-alkane is 11wt%;
(2) double solvents of step (1) is added in polytetrafluorethylepowder powder, stirs after 0.5h under the constant temperature of 10 DEG C, with the speed of 50r/min, then in nitrogen atmosphere, under 32 DEG C of constant temperature slaking 12h, obtain slaking material;
Wherein, the purity of described polytetrafluorethylepowder powder is 99.9%, degree of crystallinity≤80%, particle diameter are 0.1-0.2 μm, molecular weight is 1,000 ten thousand, and the mass ratio of the kerosene in polytetrafluorethylepowder powder and double solvents is 22.5: 1;
(3) carry out compression molding process to the slaking material of step (2), the pressure of pre-molding is 65MPa, and squeeze time is 10min, and pressurize 12.5min;
(4) adopt the finished product of mode to step (3) of temperature programming to heat-treat, and keep 36h; Described heating schedule is: from the heating rates of 25 DEG C to 320 DEG C be 20 DEG C/heating rate of min, 320-330 DEG C is 5 DEG C/heating rate of min, 330-370 DEG C is 10 DEG C/min;
(5) water of 5 DEG C is adopted to cool the sample after step (4) process fast, and in the post-drying of 1h;
(6) cut into slices to the sample after oven dry in step (5), the slice thickness obtained is 100 μm;
(7) use the section to step (6) of hydrogen plasma, ozone plasma to carry out modification successively, obtain high modified ptfe film thoroughly;
(8) 5 × 10 are less than in vacuum degree
-3under the condition of Pa, the saturating modified ptfe film of high step (7) obtained is warming up to 145 DEG C, forms cephacoria substrate;
(9) with the evaporation rate of 0.3nm/s, the MgF of evaporation 95nm in described cephacoria substrate
2film;
(10) being filled with oxygen to vacuum degree is 2 × 10
-2pa, with the speed of 0.2nm/s at described MgF
2the TiO of evaporation 500nm on film
2-ZrO
2-La
2o
3mixture film;
(11) at described TiO
2-ZrO
2-La
2o
3on mixture film, with the Al of the speed evaporation 80nm of 0.25nm/s
2o
3film, the described solar cell package cephacoria of final formation.
Embodiment 3
The preparation method of the solar cell package cephacoria described in the present embodiment, comprises the steps:
(1) by mass ratio be 4.5: 0.1 kerosene mix with polyene-based succimide, form double solvents, then add bisphenol A type epoxy resin in described double solvents, obtain compound;
Wherein, the mass ratio of the kerosene in described bisphenol A type epoxy resin and double solvents is 2: 5; In described kerosene, the content of isoparaffin is 87wt%, and the content of n-alkane is 9wt%;
(2) compound of step (1) is added in polytetrafluorethylepowder powder, stirs after 0.5h under the constant temperature of 18 DEG C, with the speed of 80r/min, then in nitrogen atmosphere, under 40 DEG C of constant temperature slaking 8h, obtain slaking material;
Wherein, the purity of described polytetrafluorethylepowder powder is 99.9%, degree of crystallinity≤80%, particle diameter are 0.1-0.2 μm, molecular weight is 8,500,000, and the mass ratio of the kerosene in polytetrafluorethylepowder powder and double solvents is 25: 1;
(3) carry out compression molding process to the slaking material of step (2), the pressure of pre-molding is 52.5MPa, and squeeze time is 1min, and pressurize 20min;
(4) adopt the finished product of mode to step (3) of temperature programming to heat-treat, and keep 24h; Described heating schedule is: from the heating rate of normal temperature to 320 DEG C be 20 DEG C/heating rate of min, 320-330 DEG C is 5 DEG C/heating rate of min, 330-370 DEG C is 10 DEG C/min;
(5) water of 0 DEG C is adopted to cool the sample after step (4) process fast, and in the post-drying of 0.75h;
(6) cut into slices to the sample after oven dry in step (5), the slice thickness obtained is 75 μm;
(7) use the section to step (6) of hydrogen plasma, ozone plasma to carry out modification successively, obtain high modified ptfe film thoroughly;
(8) 5 × 10 are less than in vacuum degree
-3under the condition of Pa, the saturating modified ptfe film of high step (7) obtained is warming up to 142 DEG C, forms cephacoria substrate;
(9) with the evaporation rate of 0.2nm/s, the MgF of evaporation 92nm in described cephacoria substrate
2film;
(10) being filled with oxygen to vacuum degree is 2.2 × 10
-2pa, with the speed of 0.4nm/s at described MgF
2the TiO of evaporation 800nm on film
2-ZrO
2-La
2o
3mixture film;
(11) at described TiO
2-ZrO
2-La
2o
3on mixture film, with the Al of the speed evaporation 75nm of 0.3nm/s
2o
3film, the described solar cell package cephacoria of final formation.
Embodiment 4
The preparation method of the solar cell package cephacoria described in the present embodiment, comprises the steps:
(1) by mass ratio be 42: 0.5: 0.5 kerosene mix with hexylene glycol, perfluoro octyl sulfonic acid sodium, form double solvents, then add bisphenol A type epoxy resin in described double solvents, obtain compound;
Wherein, the mass ratio of the kerosene in described bisphenol A type epoxy resin and double solvents is 2: 5; In described kerosene, the content of isoparaffin is 91wt%, and the content of n-alkane is 6wt%;
(2) compound of step (1) is added in polytetrafluorethylepowder powder, stirs after 0.5h under the constant temperature of 15 DEG C, with the speed of 60r/min, then in nitrogen atmosphere, under 30 DEG C of constant temperature slaking 8h, obtain slaking material;
Wherein, the purity of described polytetrafluorethylepowder powder is 99.9%, degree of crystallinity≤80%, particle diameter are 0.1-0.2 μm, molecular weight is 9,000,000, and the mass ratio of the kerosene in polytetrafluorethylepowder powder and double solvents is 22: 1;
(3) carry out compression molding process to the slaking material of step (2), the pressure of pre-molding is 50MPa, and squeeze time is 5min, and pressurize 15min;
(4) adopt the finished product of mode to step (3) of temperature programming to heat-treat, and keep 30h; Described heating schedule is: from the heating rates of 25 DEG C to 320 DEG C be 20 DEG C/heating rate of min, 320-330 DEG C is 5 DEG C/heating rate of min, 330-370 DEG C is 10 DEG C/min;
(5) water of 5 DEG C is adopted to cool the sample after step (4) process fast, and in the post-drying of 0.5h;
(6) cut into slices to the sample after oven dry in step (5), the slice thickness obtained is 60 μm;
(7) use the section to step (6) of hydrogen plasma, ozone plasma to carry out modification successively, obtain high modified ptfe film thoroughly;
(8) 5 × 10 are less than in vacuum degree
-3under the condition of Pa, the saturating modified ptfe film of high step (7) obtained is warming up to 140 DEG C, forms cephacoria substrate;
(9) with the evaporation rate of 0.2nm/s, the MgF of evaporation 95nm in described cephacoria substrate
2film;
(10) being filled with oxygen to vacuum degree is 2.3 × 10
-2pa, with the speed of 0.25nm/s at described MgF
2the TiO of evaporation 600nm on film
2-ZrO
2-La
2o
3mixture film;
(11) at described TiO
2-ZrO
2-La
2o
3on mixture film, with the Al of the speed evaporation 75nm of 0.2nm/s
2o
3film, the described solar cell package cephacoria of final formation.
Comparative example 1
Membrane preparation method before solar cell package described in this comparative example, comprises the steps:
(1) by mass ratio be 4: 0.1 benzinum mix with Sodium perfluorooctanoate, formed double solvents;
(2) double solvents of step (1) is added in polytetrafluorethylepowder powder, stirs after 0.5h under the constant temperature of 14 DEG C, with the speed of 20r/min, then in nitrogen atmosphere, under 24 DEG C of constant temperature slaking 10h, obtain slaking material;
Wherein, the purity of described polytetrafluorethylepowder powder is 99.9%, degree of crystallinity≤80%, particle diameter are 0.1-0.2 μm, molecular weight is 7,000,000, and the mass ratio of polytetrafluorethylepowder powder and benzinum is 20: 1;
(3) carry out compression molding process to the slaking material of step (2), the pressure of pre-molding is 40MPa, and squeeze time is 5.5min, and pressurize 5min;
(4) finished product of mode to step (3) of temperature programming is adopted to heat-treat, described heating schedule is: be 20 DEG C/min from the heating rates of 25 DEG C to 320 DEG C, the heating rate of 320-330 DEG C is 5 DEG C/heating rate of min, 330-370 DEG C is 10 DEG C/min;
(5) water of-5 DEG C is adopted to cool the sample after step (4) process fast, and in the post-drying of 0.5h;
(6) cut into slices to the sample after oven dry in step (5), the slice thickness obtained is 50 μm;
(7) use the section to step (6) of hydrogen plasma, ozone plasma to carry out modification successively, obtain the PTFE film of high modification thoroughly;
(8) 5 × 10 are less than in vacuum degree
-3under the condition of Pa, the saturating modified ptfe film of high step (7) obtained is warming up to 140 DEG C, forms cephacoria substrate;
(9) with the evaporation rate of 0.25nm/s, the MgF of evaporation 90nm in described cephacoria substrate
2film;
(10) being filled with oxygen to vacuum degree is 2.5 × 10
-2pa, with the speed of 0.3nm/s at described MgF
2the TiO of evaporation 650nm on film
2-ZrO
2-La
2o
3mixture film;
(11) at described TiO
2-ZrO
2-La
2o
3on mixture film, with the Al of the speed evaporation 70nm of 0.2nm/s
2o
3film, the described solar cell package cephacoria of final formation.
Experimental example 1
In the scope that wavelength is 300-1200nm, test the light transmittance of the solar cell package cephacoria that embodiment of the present invention 1-4 and comparative example 1 obtain, result is as shown in table 1.
The light transmittance (%) of table 1 embodiment 1-4 and comparative example 1
| Test condition | 25±2℃ | 250 ± 5 DEG C, heating 1h | 300 ± 5 DEG C, heating 5min |
| Embodiment 1 | 92 | 92 | 92.5 |
| Embodiment 2 | 91 | 91 | 91.5 |
| Embodiment 3 | 90.5 | 91.5 | 92 |
| Embodiment 4 | 91 | 91.5 | 92 |
| Comparative example 1 | 52.1 | 58.4 | 66.1 |
As can be seen from Table 1, compared with comparative example 1, the present invention passes through first by the double solvents of specific composition and polytetrafluorethylepowder powder mixing post curing, carry out mold pressing to slaking material again and the PTFE film obtained has very high light transmission, the light transmittance that to make at wavelength be solar cell package cephacoria within the scope of 300 ~ 1200nm can up to more than 90.5%.
Experimental example 2
Test the weatherability of the solar cell package cephacoria that embodiment of the present invention 1-4 and comparative example 1 obtain, result is as shown in table 2.
The weather resistance index of table 2 embodiment 1-4 and comparative example 1
| Low temperature resistant | The highest Long-Time Service temperature | The highest moment serviceability temperature | |
| Embodiment 1 | -186℃ | 260℃ | 280℃ |
| Embodiment 2 | -180℃ | 258℃ | 280℃ |
| Embodiment 3 | -180℃ | 258℃ | 280℃ |
| Embodiment 4 | -184℃ | 262℃ | 281℃ |
| Comparative example 1 | -170℃ | 249℃ | 280℃ |
As can be seen from Table 2, compared with comparative example 1, low temperature resistant and the resistance to elevated temperatures of the solar cell package cephacoria that embodiment of the present invention 1-4 obtains is obtained for lifting, illustrate that preparation method of the present invention passes through first by the double solvents of specific composition and polytetrafluorethylepowder powder mixing post curing, again compression molding is carried out to slaking material, be conducive to the weatherability strengthening solar cell package cephacoria.
Obviously, above-described embodiment is only for clearly example being described, and the restriction not to execution mode.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all execution modes.And thus the apparent change of extending out or variation be still among the protection range of the invention.
Claims (10)
1. a preparation method for solar cell package cephacoria, is characterized in that, comprises the steps:
(1) kerosene is mixed with surfactant and/or cosolvent, form double solvents;
(2) double solvents of step (1) is added in polytetrafluorethylepowder powder, after stirring under the constant temperature of 10-18 DEG C, with the speed of 20-80r/min, again in inert atmosphere, cooked at constant 8-12h at 24-40 DEG C, obtain slaking material;
(3) compression molding is carried out to the slaking material of step (2);
(4), after the finished product of step (3) being left standstill 24h, heat-treat, and keep 24-36h; Described heat treated heating schedule is: from the heating rates of 25 DEG C to 320 DEG C be 20 DEG C/heating rate of min, 320-330 DEG C is 5 DEG C/heating rate of min, 330-370 DEG C is 10 DEG C/min;
(5) cool the sample after step (4) process fast, and dry;
(6) sample after oven dry in step (5) is cut into slices;
(7) adopt the section to step (6) of hydrogen plasma, ozone plasma to carry out modification successively, obtain high modified ptfe film thoroughly;
(8) 5 × 10 are less than in vacuum degree
-3under the condition of Pa, the saturating modified ptfe film of high step (7) obtained is warming up to 140-145 DEG C, forms cephacoria substrate;
(9) evaporation MgF in described cephacoria substrate
2film;
(10) being filled with oxygen to vacuum degree is (2-2.5) × 10
-2pa, at described MgF
2evaporation TiO on film
2-ZrO
2-La
2o
3mixture film;
(11) at described TiO
2-ZrO
2-La
2o
3evaporating Al on mixture film
2o
3film, the described solar cell package cephacoria of final formation.
2. preparation method according to claim 1, is characterized in that, in step (1), described cosolvent is one or more in toluene, hexylene glycol or ethyl acetate; Described surfactant is one or more in polyene-based succimide, Sodium perfluorooctanoate or perfluoro octyl sulfonic acid sodium.
3. preparation method according to claim 1 and 2, is characterized in that, in step (1), the mass ratio of described cosolvent or described surfactant and described kerosene is 0.1: (4-5); Or the quality sum of described cosolvent and described surfactant and the mass ratio 0.1 of described kerosene: (4-5).
4. the preparation method according to any one of claim 1-3, is characterized in that, in step (2), the purity of described polytetrafluorethylepowder powder is 99.9%, degree of crystallinity≤80%, particle diameter are 0.1-0.2 μm, molecular weight is 7,000,000-1,000 ten thousand; The mass ratio of described polytetrafluorethylepowder powder and described kerosene is (20-25): 1.
5. the preparation method according to any one of claim 1-4, is characterized in that, in step (3), the pressure of pre-molding is 40-65MPa, and squeeze time is 1-10min, and pressurize 5-20min.
6. the preparation method according to any one of claim 1-5, is characterized in that, in step (5), uses the water of-5 ~ 5 DEG C to cool fast the sample after step (4) process, and in the post-drying of 0.5-1h.
7. the preparation method according to any one of claim 1-6, is characterized in that, described MgF
2the evaporation rate of film is 0.2-0.3nm/s; Described TiO
2-ZrO
2-La
2o
3the evaporation rate of mixture film is 0.2-0.4nm/s; Described Al
2o
3the evaporation rate of film is 0.2-0.3nm/s.
8. the preparation method according to any one of claim 1-7, is characterized in that, also comprises and add epoxy resin in described double solvents, and stir to obtain compound, then be added in described polytetrafluorethylepowder powder by described compound.
9. preparation method according to claim 8, is characterized in that, the mass ratio of described epoxy resin and described kerosene is 2: 5, and described epoxy resin is bisphenol A type epoxy resin.
10. the application of the protecting solar cell cephacoria obtained by the preparation method described in any one of claim 1-9 in unmanned plane weather resistant solar cell.
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| JP2000138391A (en) * | 1998-10-29 | 2000-05-16 | Dainippon Printing Co Ltd | Surface protective sheet for solar cell module, and solar cell module using it |
| CN101920559A (en) * | 2010-06-09 | 2010-12-22 | 浙江格尔泰斯环保特材科技有限公司 | Preparation method and product of polytetrafluoroethylene (PTFE) film |
| CN103346182A (en) * | 2013-06-07 | 2013-10-09 | 浙江帆度光伏材料有限公司 | Solar panel back film and manufacturing technology thereof |
| CN103921519A (en) * | 2014-03-19 | 2014-07-16 | 浙江歌瑞新材料有限公司 | Solar cell back plate membrane and preparation method thereof |
-
2015
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000138391A (en) * | 1998-10-29 | 2000-05-16 | Dainippon Printing Co Ltd | Surface protective sheet for solar cell module, and solar cell module using it |
| CN101920559A (en) * | 2010-06-09 | 2010-12-22 | 浙江格尔泰斯环保特材科技有限公司 | Preparation method and product of polytetrafluoroethylene (PTFE) film |
| CN103346182A (en) * | 2013-06-07 | 2013-10-09 | 浙江帆度光伏材料有限公司 | Solar panel back film and manufacturing technology thereof |
| CN103921519A (en) * | 2014-03-19 | 2014-07-16 | 浙江歌瑞新材料有限公司 | Solar cell back plate membrane and preparation method thereof |
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| GB2585038A (en) * | 2019-06-25 | 2020-12-30 | Inst Jozef Stefan | Method |
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