CN105428445B - A kind of solar photovoltaic battery component transparent back panel composite membrane and preparation method thereof - Google Patents
A kind of solar photovoltaic battery component transparent back panel composite membrane and preparation method thereof Download PDFInfo
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- CN105428445B CN105428445B CN201410423187.6A CN201410423187A CN105428445B CN 105428445 B CN105428445 B CN 105428445B CN 201410423187 A CN201410423187 A CN 201410423187A CN 105428445 B CN105428445 B CN 105428445B
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
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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 present invention relates to composite membrane technology field, more particularly to a kind of solar photovoltaic battery component transparent back panel composite membrane and preparation method thereof.Solar photovoltaic battery component transparent back panel composite membrane of the invention, it includes the first weathering layer, the second weathering layer and base layer successively from top to bottom, and the first weathering layer is transparent weatherability PC films, and thickness is 25 100 μm；Second weathering layer is transparent weatherability PET film, and thickness is 150 300 μm；Base layer is transparent linear low density LLDPE films, and thickness is 50 150 μm.The transparent weatherability PC films of the present invention improve the weatherability and light transmittance of its backboard applied for traditional pvdf membrane, not only reduce cost, also greatly reduce the environmental pollution that fluorine film is brought, and have excellent caking property with EVA adhesive film.
Description
Technical field
The present invention relates to composite membrane technology field, more particularly to a kind of solar photovoltaic battery component transparent back panel composite membrane
And preparation method thereof.
Background technology
With increasingly poor, the focus of the global demand to novel energy as worldwide attention of international traditional energy, and
Solar energy is not only inexhaustible, nexhaustible as novel energy, and the features such as with cleanliness without any pollution, safety nuisance free,
Extremely global concern and realize the industrialization of energy photoelectric conversion.
Solar photovoltaic cell backplane film is the pith of solar photovoltaic battery component, and it is used to protect solar-electricity
Pond piece is not corroded by atmospheric environment, it is ensured that solar cell module is up to 25-30 out of doors.Domestic at present is most universal
Be Du Pont production TPT type fabric backplanes, it is by upper and lower two-layer fluorine film（PVF or PVDF）With middle polyester layer
（PET）It is composited.But, because fluorine film is constantly in monopoly position, and import price is expensive, add fluorine film in itself with it is external
The influence of condition, steam readily penetrates through backboard so that battery component is easily shortened service life by the erosion of steam；Separately
Outward, fluorine film has pollution to environment during production, therefore, find a kind of even floride-free backboard of with low cost, excellent performance
Demand as many backboard manufacturers.
The content of the invention
The purpose of the present invention is to solve the shortcomings of the prior art, and a kind of relative inexpensiveness is provided, raw material is easy to get, state
Productization degree is high, the solar photovoltaic battery component transparent back panel composite membrane of safety non-pollution and excellent combination property.
Another object of the present invention is in view of the shortcomings of the prior art, and it is saturating to provide a kind of solar photovoltaic battery component
The preparation method of bright rear panel compound film.
The present invention is achieved through the following technical solutions.
A kind of solar photovoltaic battery component transparent back panel composite membrane, it includes the first weathering layer, the successively from top to bottom
Two weathering layers and base layer, the first weathering layer are transparent weatherability PC films, and thickness is 25-100 μm；Second weathering layer is transparent
Weatherability PET film, thickness is 150-300 μm；Base layer is transparent linear low density LLDPE films, and thickness is 50-150 μm.
The weatherability of solar photovoltaic battery component transparent back panel composite membrane of the invention by transparent weatherability PC films and
Transparent weatherability PET film materials at two layers is provided, and transparent weatherability PC films have a good dimensional stability, high transparency,
Weatherability, electrical insulating property, good weatherability, preferable water vapor transmittance, and excellent resistance to ultraviolet performance；Transparent weatherability
PET film is a kind of engineering films of excellent performance, there is very excellent insulating properties, resistance to steam breathability, and ultra-violet resistance,
Production raw material are easy to get, and degree domestic is high.
Preferably, the thickness of transparent weatherability PC films is 50 μm, and transparent weatherability polyethylene terephthalate is thin
The thickness of film is 250 μm, and the thickness of transparent linear low density polyethylene film is 90 μm.
Wherein, transparent weatherability PC films are made up of the component of following weight portion：
Makrolon 90-110 parts
Ultraviolet absorber 0.1-10 parts
Ultraviolet light screener 0.1-10 parts
Light stabilizer 0.1-1 parts
1-10 parts of modified poly resin；
Ultraviolet absorber is benzophenone class or benzotriazole ultraviolet absorber, selected from UV-234, UV-326 or UV-1577
One kind；Ultraviolet absorber of the invention has heat-resisting sublimability, and chemical stability is good, and volatility is minimum and mechanical performance keeps
Property, with light stabilizer and with there is significant cooperative effect, improve the thermo-oxidative stability and resistance to ultraviolet wastewater of transparent weatherability PC films
Power.
Ultraviolet light screener is inorganic nano ultraviolet light screener, selected from TiO2Or ZnO；
Light stabilizer is hindered amine as light stabilizer, selected from the one kind in 944,770 or 622；Hindered amine light of the invention is steady
It is the organic amine compound that a class has space steric effect to determine agent（HALS）, the nitrogen oxygen that it is generated in the presence of light and heat
Free radical can absorb ultraviolet light, and form excitation state, cause the fracture of piperidine ring and further change.HALS can be effective
Ground remove macromolecular material in by high-energy ray radiation produce free radical and hydroperoxide decomposition, thus also just can reduce by
In the color change that radiation is produced.
Modified poly resin is selected from the one kind in PBA-PMMA, LLDPE-g-MAH or DBAE-g-PE.
Preferably, transparent weatherability PC films are to be made up of the component of following weight portion：
Makrolon 95-105 parts
Ultraviolet absorber 0.5-5 parts
Ultraviolet light screener 0.5-5 parts
Light stabilizer 0.4-0.8 parts
3-7 parts of modified poly resin.
Wherein, transparent weatherability PET film is made up of the component of following weight portion：
Polyethylene terephthalate 90-100 parts
Ultraviolet light screener 0.1-10 parts
Hydrolysis-resisting agent 1-5 parts；
Ultraviolet light screener is inorganic nano ultraviolet light screener, selected from TiO2Or ZnO；
Hydrolysis-resisting agent is the polycarbodiimide of the model NU-03 of outstanding grace chemical industry, the outward appearance of NU-03 polycarbodiimides
In light yellow clear solid, solid content >=99%, fusing point（℃）It is 70-90, decomposition temperature（℃）>=130, density (20 DEG C) is about
1.05g/cm3, dissolubility is：It is water insoluble, it is dissolved in toluene, dimethylbenzene, chloroform, dichloromethane, tetrahydrofuran and dimethyl acyl
Amine etc..The reactivity of NU-03 polycarbodiimides is very low, under normal temperature or slightly higher temperature and strong oxidizer, the sulphur such as peroxide
The reducing agents such as acid, accelerator are all the very stable chemicals of performance without reactivity, further, since in its molecule containing one or
More reactive groups, in serious material is hydrolyzed, can produce chain rupture to connect effect again, improve system intensity, hydrolyzed
Repairing connection chain rupture is improved constantly in journey, extends the service life of material.
Preferably, transparent weatherability PET film is made up of the component of following weight portion：
Polyethylene terephthalate 94-97 parts
Ultraviolet light screener 0.5-5 parts
Hydrolysis-resisting agent 2-4 parts.
Wherein, transparent weatherability PC films be by sided corona treatment, surface tension be 52 dynes of transparent weatherabilities of value
PC films；Transparent weatherability PET film be by sided corona treatment, transparent weatherability PET that surface tension is 52 dynes of values it is thin
Film；Transparent linear low density LLDPE films be by sided corona treatment, surface tension be 32 dynes of transparent linear low densities of value
LLDPE films.
Wherein, between the first weathering layer and the second weathering layer, between the second weathering layer and base layer adhesive linkage is provided with,
Two adhesive linkages are transparent glue adhesive linkage, and the thickness of two transparent glue adhesive linkages is 11-14 μm.
Wherein, including 0.1-10 parts of ultraviolet absorber, ultraviolet absorber is benzophenone class to two transparent glue adhesive linkages
Or benzotriazole ultraviolet absorber, selected from the one kind in UV-234, UV-326 or UV-1577.
The preparation method of above-mentioned solar photovoltaic battery component transparent back panel composite membrane, it includes following preparation process：
A, by makrolon, ultraviolet absorber, ultraviolet light screener, light stabilizer, modified poly resin press above-mentioned weight
Part mixing and stirring, is obtained modified PC mixed materials, and modified PC mixed materials are produced into transparent weatherability PC using the tape casting
Film；
B, by polyethylene terephthalate, ultraviolet light screener, hydrolysis-resisting agent press above-mentioned weight portion mixing and stirring,
Modified PET mixed material is obtained, modified PET mixed material is produced into transparent weatherability PET film using stretch processes；
C, transparent weatherability PC films, transparent weatherability PET film and transparent linear low density LLDPE films entered respectively
Row sided corona treatment；
D, the first upper surface in transparent weatherability PET film coat transparent glue, then transparent weatherability PC films are placed in
The upper surface of transparent weatherability PET film, and the heat pressure adhesive solidification at a temperature of 60-100 DEG C, be obtained transparent composite membrane half into
Product；
E, the transparent weatherability PET film face coating transparent glue in transparent composite membrane semi-finished product, and it is low with transparent linear
Density LLDPE films carry out hot pressing at a temperature of 60-100 DEG C and are combined, and transparent composite membrane just finished product is obtained；
F, by the just finished product curing of transparent composite membrane, solar photovoltaic assembly transparent back panel composite membrane is obtained.
Wherein, in step f, the condition of curing is 50 DEG C of temperature ＞, humidity ＞ 85%rh, and the time of curing is 5 ± 1 days.
Beneficial effects of the present invention are：Solar photovoltaic assembly transparent back panel composite membrane of the invention, due to transparent weather-proof
Property PC films and transparent weatherability PET film have weatherability, and through sided corona treatment so that its photovoltaic applied
Component transparent back panel has good weatherability, ageing-resistant, resistance to steam, resistance to ultraviolet, high-low temperature resistant, solvent resistant corrosion, insulating properties
Etc. various excellent properties, solar cell module has long-acting lasting defencive function.
In addition, it instead of E.I.Du Pont Company with cheap transparent weatherability PC films and transparent weatherability PET film
Expensive fluorine film（Tedlar or PVDF）, production cost is not only greatly reduced, and improve solar energy
Lie prostrate the degree domestic of component transparent back panel film.Additionally, by the transparent weatherability PC films of sided corona treatment and transparent weatherability
Adhesion strength between PET film is high more than the adhesion strength between fluorine film and PET film；Meanwhile, this transparent back panel it is transparent
There is excellent adhesion strength between linea low density LLDPE films and transparent weatherability PET film.This allows for this transparent back panel
Composite membrane can the more stable stability for being combined with solar battery sheet, improve whole photovoltaic module.
Solar photovoltaic assembly transparent back panel composite membrane combination double-side cell of the invention, can make whole component play two-sided
The effect of generating, substantially increases the generated energy of component, and generated energy, up to 2 times of ordinary white backboard, is ordinary white backboard
Effect is unable to reach, in BIPV, glass curtain wall, greenhouse greenhouse etc. has unique advantage.
Preparation method of the invention is simple and easy to apply, and production efficiency is high, is conducive to popularity application.
Brief description of the drawings
Fig. 1 is structural representation of the invention.
Reference includes：
1-transparent weatherability PC films, 2-transparent weatherability PET film, 3-transparent linear low density LLDPE films,
4-transparent glue adhesive linkage.
Specific embodiment
With reference to embodiment, the present invention is further illustrated.
Embodiment 1.
As shown in figure 1, the solar photovoltaic battery component transparent back panel composite membrane of the present embodiment, it is wrapped successively from top to bottom
The first weathering layer, the second weathering layer and base layer are included, between the first weathering layer and the second weathering layer, the second weathering layer and base layer
Between be provided with adhesive linkage, two adhesive linkages are transparent glue adhesive linkage 4, and the thickness of two transparent glue adhesive linkages 4 is equal
It is 11 μm；First weathering layer is transparent weatherability PC（Makrolon）Film 1, thickness is 25 μm；Second weathering layer is transparent resistance to
Time property PET（Polyethylene terephthalate）Film 2, thickness is 150 μm；Base layer is transparent linear low density LLDPE（It is poly-
Ethene）Film 3, thickness is 50 μm；
Two transparent glue adhesive linkages 4 include 0.1 part of ultraviolet absorber UV-234, ultraviolet absorber be benzophenone class or
Benzotriazole ultraviolet absorber, selected from UV-234；
The preparation method of the solar photovoltaic battery component transparent back panel composite membrane of the present embodiment, it includes that following preparation walks
Suddenly：
A, it is 90 parts of makrolon, 10 parts of ultraviolet absorber UV-234,10 parts of TiO by weight portion2, 0.1 part
The modified poly resin PBA-PMMA mixing and stirrings of 944,1 part of light hindered amine as light stabilizer, are obtained modified PC mixtures
Material, transparent weatherability PC films 1 are produced by modified PC mixed materials using the tape casting；
B, it is 90 parts of polyethylene terephthalate, 10 parts of TiO by weight portion2, 1 part of polycarbodiimide mixes
Conjunction stirs, and modified PET mixed material is obtained, and modified PET mixed material is produced using stretch processes transparent weather-proof
Property PET film 2；
C, respectively by transparent weatherability PC films 1, transparent weatherability PET film 2 and transparent linear low density LLDPE films
3 carry out sided corona treatment；
D, the first upper surface in transparent weatherability PET film 2 coat transparent glue, then transparent weatherability PC films 1 are put
In the upper surface of transparent weatherability PET film 2, and the heat pressure adhesive solidification at a temperature of 60 DEG C, be obtained transparent composite membrane half into
Product；
E, the transparent face of the weatherability PET film 2 coating transparent glue in transparent composite membrane semi-finished product, and it is low with transparent linear
Density LLDPE films 3 carry out hot pressing at a temperature of 60 DEG C and are combined, and transparent composite membrane just finished product is obtained；
F, by the just finished product curing of transparent composite membrane, solar photovoltaic assembly transparent back panel composite membrane is obtained.
Embodiment 2.
The present embodiment is with the difference of embodiment 1：The thickness of two transparent glue adhesive linkages 4 of the present embodiment is equal
It is 14 μm；The thickness of transparent weatherability PC films 1 is 100 μm；The thickness of transparent weatherability PET film 2 is 300 μm；Transparent thread
Property low-density LLDPE films 3 thickness be 150 μm.
Two transparent glue adhesive linkages 4 are including 0.5 part of ultraviolet absorber UV-326.
The preparation method of the solar photovoltaic battery component transparent back panel composite membrane of the present embodiment, it includes that following preparation walks
Suddenly：
A, be 95 parts of makrolon by weight portion, 5 parts of ultraviolet absorber UV-326,5 parts of ZnO, 0.4 part of light receives
The modified poly resin LLDPE-g-MAH mixing and stirrings of 770,3 parts of amine light stabilizer are hindered, modified PC mixtures are obtained
Material, transparent weatherability PC films 1 are produced by modified PC mixed materials using the tape casting；
B, it is 94 parts of polyethylene terephthalate, 5 parts of ZnO, the mixing of 2 parts of polycarbodiimide by weight portion
Stir, modified PET mixed material is obtained, modified PET mixed material is produced into transparent weatherability using stretch processes
PET film 2；
C, respectively by transparent weatherability PC films 1, transparent weatherability PET film 2 and transparent linear low density LLDPE films
3 carry out sided corona treatment；
D, the first upper surface in transparent weatherability PET film 2 coat transparent glue, then transparent weatherability PC films 1 are put
In the upper surface of transparent weatherability PET film 2, and the heat pressure adhesive solidification at a temperature of 100 DEG C, be obtained transparent composite membrane half into
Product；
E, the transparent face of the weatherability PET film 2 coating transparent glue in transparent composite membrane semi-finished product, and it is low with transparent linear
Density LLDPE films 3 carry out hot pressing at a temperature of 100 DEG C and are combined, and transparent composite membrane just finished product is obtained；
F, by the just finished product curing of transparent composite membrane, the condition of curing is 50 DEG C of temperature ＞, humidity ＞ 85%rh, curing when
Between be 5 days, solar photovoltaic assembly transparent back panel composite membrane is obtained.
Unaccounted feature, using the explanation in embodiment 1, is no longer repeated herein in the present embodiment.
Embodiment 3.
The present embodiment is with the difference of embodiment 1：The thickness of two transparent glue adhesive linkages 4 of the present embodiment is equal
It is 12.5 μm；The thickness of transparent weatherability PC films 1 is 50 μm；The thickness of transparent weatherability PET film 2 is 250 μm；Transparent thread
Property low-density LLDPE films 3 thickness be 90 μm.
Two transparent glue adhesive linkages 4 are including 1 part of ultraviolet absorber UV-1577.
The preparation method of the solar photovoltaic battery component transparent back panel composite membrane of the present embodiment, it includes that following preparation walks
Suddenly：
A, it is 100 parts of makrolon, 1 part of ultraviolet absorber UV-1577,1 part of TiO by weight portion2, 0.6 part
The modified poly resin DBAE-g-PE mixing and stirrings of 622,5 parts of light hindered amine as light stabilizer, are obtained modified PC mixtures
Material, transparent weatherability PC films 1 are produced by modified PC mixed materials using the tape casting；
B, it is 95 parts of polyethylene terephthalate, 1 part of TiO by weight portion2, 3 parts of polycarbodiimide mixes
Conjunction stirs, and modified PET mixed material is obtained, and modified PET mixed material is produced using stretch processes transparent weather-proof
Property PET film 2；
C, respectively by transparent weatherability PC films 1, transparent weatherability PET film 2 and transparent linear low density LLDPE films
3 carry out sided corona treatment；
D, the first upper surface in transparent weatherability PET film 2 coat transparent glue, then transparent weatherability PC films 1 are put
In the upper surface of transparent weatherability PET film 2, and the heat pressure adhesive solidification at a temperature of 80 DEG C, be obtained transparent composite membrane half into
Product；
E, the transparent face of the weatherability PET film 2 coating transparent glue in transparent composite membrane semi-finished product, and it is low with transparent linear
Density LLDPE films 3 carry out hot pressing at a temperature of 80 DEG C and are combined, and transparent composite membrane just finished product is obtained；
F, by the just finished product curing of transparent composite membrane, solar photovoltaic assembly transparent back panel composite membrane is obtained.
Unaccounted feature, using the explanation in embodiment 1, is no longer repeated herein in the present embodiment.
Embodiment 4.
The present embodiment is with the difference of embodiment 1：The thickness of two transparent glue adhesive linkages 4 of the present embodiment is equal
It is 12 μm；The thickness of transparent weatherability PC films 1 is 40 μm；The thickness of transparent weatherability PET film 2 is 200 μm；Transparent linear
The thickness of low-density LLDPE films 3 is 70 μm.
Two transparent glue adhesive linkages 4 are including 5 parts of ultraviolet absorber UV-326.
The preparation method of the solar photovoltaic battery component transparent back panel composite membrane of the present embodiment, it includes that following preparation walks
Suddenly：
A, by weight portion be 105 parts makrolon, 0.5 part of ultraviolet absorber UV-326,0.5 part of ZnO, 0.8 part
770,7 parts of light hindered amine as light stabilizer modified poly resin LLDPE-g-MAH mixing and stirrings, modified PC is obtained and mixes
Compound material, transparent weatherability PC films 1 are produced by modified PC mixed materials using the tape casting；
B, be 97 parts of polyethylene terephthalate by weight portion, 0.5 part of ZnO, 4 parts of polycarbodiimide mix
Conjunction stirs, and modified PET mixed material is obtained, and modified PET mixed material is produced using stretch processes transparent weather-proof
Property PET film 2；
C, respectively by transparent weatherability PC films 1, transparent weatherability PET film 2 and transparent linear low density LLDPE films
3 carry out sided corona treatment；
D, the first upper surface in transparent weatherability PET film 2 coat transparent glue, then transparent weatherability PC films 1 are put
In the upper surface of transparent weatherability PET film 2, and the heat pressure adhesive solidification at a temperature of 70 DEG C, be obtained transparent composite membrane half into
Product；
E, the transparent face of the weatherability PET film 2 coating transparent glue in transparent composite membrane semi-finished product, and it is low with transparent linear
Density LLDPE films 3 carry out hot pressing at a temperature of 70 DEG C and are combined, and transparent composite membrane just finished product is obtained；
F, by the just finished product curing of transparent composite membrane, the condition of curing is 50 DEG C of temperature ＞, humidity ＞ 85%rh, curing when
Between be 4 days, solar photovoltaic assembly transparent back panel composite membrane is obtained.
Unaccounted feature, using the explanation in embodiment 1, is no longer repeated herein in the present embodiment.
Embodiment 5.
The present embodiment is with the difference of embodiment 1：The thickness of two transparent glue adhesive linkages 4 of the present embodiment is equal
It is 13 μm；The thickness of transparent weatherability PC films 1 is 75 μm；The thickness of transparent weatherability PET film 2 is 275 μm；Transparent linear
The thickness of low-density LLDPE films 3 is 120 μm.
Two transparent glue adhesive linkages 4 are including 10 parts of ultraviolet absorber UV-234.
The preparation method of the solar photovoltaic battery component transparent back panel composite membrane of the present embodiment, it includes that following preparation walks
Suddenly：
A, it is 110 parts of makrolon, 0.1 part of ultraviolet absorber UV-234,0.1 part of TiO by weight portion2, 1 part
The modified poly resin PBA-PMMA mixing and stirrings of 944,10 parts of light hindered amine as light stabilizer, are obtained modified PC mixtures
Material, transparent weatherability PC films 1 are produced by modified PC mixed materials using the tape casting；
B, it is 100 parts of polyethylene terephthalate, 0.1 part of TiO by weight portion2, 5 parts of polycarbodiimide
Component mixing and stirring, is obtained modified PET mixed material, and modified PET mixed material is produced using stretch processes
Bright weatherability PET film 2；
C, respectively by transparent weatherability PC films 1, transparent weatherability PET film 2 and transparent linear low density LLDPE films
3 carry out sided corona treatment；
D, the first upper surface in transparent weatherability PET film 2 coat transparent glue, then transparent weatherability PC films 1 are put
In the upper surface of transparent weatherability PET film 2, and the heat pressure adhesive solidification at a temperature of 90 DEG C, be obtained transparent composite membrane half into
Product；
E, the transparent face of the weatherability PET film 2 coating transparent glue in transparent composite membrane semi-finished product, and it is low with transparent linear
Density LLDPE films 3 carry out hot pressing at a temperature of 90 DEG C and are combined, and transparent composite membrane just finished product is obtained；
F, by the just finished product curing of transparent composite membrane, the condition of curing is 50 DEG C of temperature ＞, humidity ＞ 85%rh, curing when
Between be 6 days, solar photovoltaic assembly transparent back panel composite membrane is obtained.
Unaccounted feature, using the explanation in embodiment 1, is no longer repeated herein in the present embodiment.
The performance inspection of solar photovoltaic battery component transparent back panel composite membrane obtained in 1 ~ embodiment of embodiments of the invention 5
Survey data and be shown in Table 1.
Table 1
。
As it can be seen from table 1 solar photovoltaic battery component transparent back panel obtained in 1 ~ embodiment of embodiments of the invention 5
Composite membrane, its tensile strength（MD/TD）>=150MPa, elongation at break（MD/TD）>=120/80, percent thermal shrinkage（MD/TD）≤
0.5/0.5, splitting power >=5, with EVA adhesive film cohesive force >=60, water vapor transmittance≤1.0, breakdown voltage >=20 are locally put
Electricity >=1000, anti-flammability is HB, and air surface dyne value is 42, and specific insulation >=1014, weatherability is ageing-resistant, resistance to steam, resistance to
The various excellent properties such as ultraviolet, high-low temperature resistant, solvent resistant corrosion, insulating properties are good, and it is long-acting lasting to have to solar cell module
Defencive function.
Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than the present invention is protected
The limitation of scope is protected, although being explained to the present invention with reference to preferred embodiment, one of ordinary skill in the art should
Work as understanding, technical scheme can be modified or equivalent, without deviating from the reality of technical solution of the present invention
Matter and scope.
Claims (9)
1. a kind of solar photovoltaic battery component transparent back panel composite membrane, it is characterised in that：It includes first successively from top to bottom
Weathering layer, the second weathering layer and base layer, the first weathering layer are transparent weatherability PC films, and thickness is 25-100 μm；Second is resistance to
Time layer is transparent weatherability PET film, and thickness is 150-300 μm；Base layer is transparent linear low density LLDPE films, thickness
It is 50-150 μm,
Transparent weatherability PC films are made up of the component of following weight portion：
Makrolon 90-110 parts
Ultraviolet absorber 0.1-10 parts
Ultraviolet light screener 0.1-10 parts
Light stabilizer 0.1-1 parts
1-10 parts of modified poly resin；
Ultraviolet absorber be benzophenone class or benzotriazole ultraviolet absorber, selected from UV-234, UV-326 or UV-1577 in one
Kind；
Ultraviolet light screener is inorganic nano ultraviolet light screener, selected from TiO2Or ZnO；
Light stabilizer is hindered amine as light stabilizer, selected from the one kind in 944,770 or 622；
Modified poly resin is selected from the one kind in PBA-PMMA, LLDPE-g-MAH or DBAE-g-PE.
2. a kind of solar photovoltaic battery component transparent back panel composite membrane according to claim 1, it is characterised in that：It is transparent
The thickness of weatherability PC films is 50 μm, and the thickness of transparent weatherability pet film is 250 μm, transparent
The thickness of linear low-density polyethylene film is 90 μm.
3. a kind of solar photovoltaic battery component transparent back panel composite membrane according to claim 1, it is characterised in that：It is transparent
Weatherability PC films are made up of the component of following weight portion：
Makrolon 95-105 parts
Ultraviolet absorber 0.5-5 parts
Ultraviolet light screener 0.5-5 parts
Light stabilizer 0.4-0.8 parts
3-7 parts of modified poly resin.
4. a kind of solar photovoltaic battery component transparent back panel composite membrane according to claim 1, it is characterised in that：It is transparent
Weatherability PET film is made up of the component of following weight portion：
Polyethylene terephthalate 90-100 parts
Ultraviolet light screener 0.1-10 parts
Hydrolysis-resisting agent 1-5 parts；
Ultraviolet light screener is inorganic nano ultraviolet light screener, selected from TiO2Or ZnO；
Hydrolysis-resisting agent is the polycarbodiimide of the model NU-03 of outstanding grace chemical industry.
5. a kind of solar photovoltaic battery component transparent back panel composite membrane according to claim 4, it is characterised in that：It is transparent
Weatherability PET film is made up of the component of following weight portion：
Polyethylene terephthalate 94-97 parts
Ultraviolet light screener 0.5-5 parts
Hydrolysis-resisting agent 2-4 parts.
6. a kind of solar photovoltaic battery component transparent back panel composite membrane according to claim 1, it is characterised in that：It is transparent
Weatherability PC films be by sided corona treatment, surface tension be 52 dynes of transparent weatherability PC films of value；Transparent weatherability
PET film be by sided corona treatment, surface tension be 52 dynes of transparent weatherability PET films of value；Transparent linear low density
LLDPE films be by sided corona treatment, surface tension be 32 dynes of transparent linear low density LLDPE films of value.
7. a kind of solar photovoltaic battery component transparent back panel composite membrane according to claim 1, it is characterised in that：First
Between weathering layer and the second weathering layer, adhesive linkage is provided between the second weathering layer and base layer, two adhesive linkages are
Gelatin water adhesive linkage, the thickness of two transparent glue adhesive linkages is 11-14 μm.
8. a kind of solar photovoltaic battery component transparent back panel composite membrane according to claim 7, it is characterised in that：Two
Transparent glue adhesive linkage includes 0.1-10 parts of ultraviolet absorber, and ultraviolet absorber is benzophenone class or the ultraviolet suction of benzotriazole
Agent is received, selected from the one kind in UV-234, UV-326 or UV-1577.
9. the preparation side of a kind of solar photovoltaic battery component transparent back panel composite membrane described in claim 1-8 any one
Method, it is characterised in that：It includes following preparation process：
A, makrolon, ultraviolet absorber, ultraviolet light screener, light stabilizer, modified poly resin are mixed by above-mentioned weight portion
Conjunction stirs, and modified PC mixed materials are obtained, and modified PC mixed materials are produced into transparent weatherability PC films using the tape casting；
B, by polyethylene terephthalate, ultraviolet light screener, hydrolysis-resisting agent press above-mentioned weight portion mixing and stirring, be obtained
Modified PET mixed material, transparent weatherability PET film is produced by modified PET mixed material using stretch processes；
C, transparent weatherability PC films, transparent weatherability PET film and transparent linear low density LLDPE films carried out into electricity respectively
Dizzy treatment；
D, the first upper surface in transparent weatherability PET film coat transparent glue, then transparent weatherability PC films are placed in transparent
The upper surface of weatherability PET film, and the heat pressure adhesive solidification at a temperature of 60-100 DEG C, are obtained transparent composite membrane semi-finished product；
E, the transparent weatherability PET film face coating transparent glue in transparent composite membrane semi-finished product, and and transparent linear low density
LLDPE films carry out hot pressing at a temperature of 60-100 DEG C and are combined, and transparent composite membrane just finished product is obtained；
F, by the just finished product curing of transparent composite membrane, solar photovoltaic assembly transparent back panel composite membrane is obtained.
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| CN106206806A (en) * | 2016-08-30 | 2016-12-07 | 上海紫江彩印包装有限公司 | A kind of solar cell backboard film |
| CN106784093A (en) * | 2016-12-27 | 2017-05-31 | 苏州赛伍应用技术有限公司 | A kind of solar cell module transparent isolation bar |
| CN106784097A (en) * | 2017-02-22 | 2017-05-31 | 苏州赛伍应用技术有限公司 | A kind of transparent solar components backboard of high water resistant and foreboard |
| CN106856213B (en) * | 2017-02-23 | 2019-02-15 | 南京日托光伏科技股份有限公司 | A kind of conductive backings and preparation method thereof of suitable scale volume production |
| CN108682707B (en) * | 2018-06-13 | 2020-06-09 | 常州回天新材料有限公司 | Transparent back plate of solar photovoltaic cell module for double-sided power generation |
| CN110861376A (en) * | 2019-12-02 | 2020-03-06 | 上海紫江彩印包装有限公司 | Polyolefin film for transparent back plate film and preparation method thereof |
| CN112126098A (en) * | 2020-09-22 | 2020-12-25 | 广东毅科新材料有限公司 | Plastic-free composite film |
| CN114013147B (en) * | 2021-11-09 | 2024-02-27 | 深圳市润江南科技有限公司 | Hardening coating composite film and manufacturing method thereof |
| CN114864719B (en) * | 2022-04-13 | 2024-03-12 | 浙江合特光电有限公司 | Solar cell backboard with high weather resistance and high water vapor barrier property and preparation method thereof |
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