CN107556930A - Eutectic refers to the compound white photovoltaic glued membranes of tri- layers of EVA - Google Patents
Eutectic refers to the compound white photovoltaic glued membranes of tri- layers of EVA Download PDFInfo
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- CN107556930A CN107556930A CN201710785198.2A CN201710785198A CN107556930A CN 107556930 A CN107556930 A CN 107556930A CN 201710785198 A CN201710785198 A CN 201710785198A CN 107556930 A CN107556930 A CN 107556930A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The present invention relates to photovoltaic glued membrane technical field, particularly a kind of eutectic refers to the compound white photovoltaic glued membranes of tri- layers of EVA, including middle white EVA layer and the upper strata transparent EVA layer and lower floor's transparent EVA layer that are arranged on above and below middle white EVA layer, wherein white EVA layer weight/mass percentage composition is as follows：Eutectic refers to ethylene-vinyl acetate copolymer resin content as 80%~95%, and white filler 5% 20%, antioxidant content is 0.05%~5%, and content of crosslinking agent is 0.25%~2%, and silane coupled agent content is 0.1%~4%.After said structure, products application produced by the present invention is in extensive range, and reflecting rate reaches more than 90%, it is possible to increase the photoelectric transformation efficiency of photovoltaic module, and can eliminate simultaneously bubble and it is hidden split, fold and the white phenomenon of overflowing.
Description
Technical field
The present invention relates to photovoltaic glued membrane technical field, particularly a kind of eutectic refers to the compound white photovoltaic glued membranes of tri- layers of EVA.
Background technology
Nearly ten years, because technological progress and cost are cheap, the development of China's photovoltaic industry is very swift and violent, from 2008 with
Come, yield and the output value exceed the photovoltaics such as Germany, Japan power and occupy the first in the world.But solar cell photoelectric converts at present
Effect is difficult to improve, and between maintaining 18%~19% always, how to improve the photoelectric transformation efficiency of photovoltaic cell turns into the world
The important references of photovoltaic industry focus of attention and national governments' New Energy Industry layout.Present photoelectric transformation efficiency is from theory
Also there is a big difference for the generating efficiency 26.8%~30% of calculating, and the source of these losses is many, including battery
The blank at interval and cell piece and module edge between piece.
Solar photovoltaic assembly basic structure is formed by 5 layers from top to bottom：Upper strata high-transparency Guang volt Bo Li ﹑ upper stratas EVA glue
Mo ﹑ electricity Chi Pian ﹑ lower floor's EVA Jiao Mo ﹑ photovoltaic backs or lower floor's photovoltaic glass.Due to this structure, sunshine is incident from glass, warp
Upper strata EVA adhesive film is crossed, cell piece is reached and realizes opto-electronic conversion, interval and cell piece and component side of the sunshine between cell piece
There is greater loss in the blank space of edge, if bottom is photovoltaic glass, then sunshine can be projected directly, if photovoltaic back
Plate, because backboard reflectivity is not high, about 70-80%, the sunshine for thus having 20-30% is lost.Therefore, high reflecting rate
White EVA adhesive film preparation and application just turn into solar energy industry circle research focus.But go deep into research, gas
Pao ﹑ folds and the problem of white of overflowing, gradually display.Because photovoltaic module needs high temperature lamination ability curing molding, and it was laminated
In order to solve the generation of bubble, it is necessary to vacuumize in journey, under the double action of air pressure and internal stress, white EVA adhesive film occurs
Fold, and easily overflow in vain on cell piece and busbar, the attractive in appearance of photovoltaic module is so not only have impact on, and reduce work(
Rate.So solve the problems, such as Qi Pao ﹑ folds and overflow white just to turn into the task of top priority.
The solution of internal stress mainly reduces percent thermal shrinkage, and the influence of air pressure mainly reduces the thermal fluidity of glued membrane, mesh
The preceding method for solving this problem mainly has two kinds：1, white EVA adhesive film electron radiation pretreatment；2, eutectic refers to white EVA glue
Film.But due to the limitation of technical merit, electron radiation generator work at present is simultaneously unstable, easily causes the uneven of radiation
Property, i.e., local excess or low amounts can excessively bring the hidden risk split with bubble of cell piece, and low amounts occurs fold and overflows white again
Risk.Simultaneously as hot melt is poor, eutectic refers to EVA adhesive film and carrys out bigger load to equipment belt in hot-melt extruded, is made to processing
Into bigger difficulty, melting means is too low easily to bring the hidden risk split with bubble, and melting means is slightly higher may can not to be solved fold and overflow again
The problem of white.
The content of the invention
The technical problem to be solved in the invention is that hot melt mobility is low and the eutectic of corrugationless and white risk of overflowing refers to EVA tri-
The compound white photovoltaic glued membrane of layer.
In order to solve the above technical problems, the eutectic of the present invention refers to the compound white photovoltaic glued membranes of tri- layers of EVA, including middle white
EVA layer and the upper strata transparent EVA layer and lower floor's transparent EVA layer being arranged on above and below middle white EVA layer, wherein white EVA layer matter
It is as follows to measure percentage composition：It is 80%~95% that eutectic, which refers to ethylene-vinyl acetate copolymer resin content, white filler 5%-
20%, antioxidant content be 0.05%~5%, content of crosslinking agent be 0.25%~2%, silane coupled agent content be 0.1%~
4%；Transparent EVA layer weight/mass percentage composition is as follows：It is 87%~98% that eutectic, which refers to ethylene-vinyl acetate copolymer resin content,
Antioxidant content is 0.05%~5%, and content of crosslinking agent is 0.25%~2%, and silane coupled agent content is 0.1%~4%.
Further, the molar content that the eutectic refers to vinyl acetate in ethylene-vinyl acetate copolymer resin is 20%
~50%, the melt flow rate (MFR) that the eutectic refers to ethylene-vinyl acetate copolymer resin is 1.0g/10min~10g/
10min。
Further, the antioxidant includes primary antioxidant and auxiliary anti-oxidant, wherein, the main antioxygen base is β-(3,5-
Di-tert-butyl-hydroxy phenyl) propionic acid octadecanol ester；The auxiliary anti-oxidant is three (4- nonyl phenols) phosphite esters and/or Asia
Tricresyl phosphate (2,4- di-tert-butyl-phenyls) ester.
Further, the auxiliary anti-oxidant is three (4- nonyl phenols) phosphite esters and (2, the 4- di-t-butyls of phosphorous acid three
Phenyl) ester compound.
Further, the crosslinking agent includes crosslinking and curing agent and assistant crosslinking agent, wherein, the crosslinking and curing agent includes
Machine peroxide and/or azo-compound, the organic peroxide are included for dicumyl peroxide, di-tert-butyl peroxide
Thing, di-isopropylbenzene hydroperoxide, the di-t-butyl hexane peroxide of 2,5- dimethyl -2,5,4,4- bis- (t-amyl peroxy) valeric acid are just
Butyl ester, the one or more in the peroxidating 2- ethylhexyl carbonates tert-butyl ester, 3,3- bis- (t-butyl peroxy) ethyl butyrate；Institute
State assistant crosslinking agent include Triallyl isocyanurate, TAC, trimethylol-propane trimethacrylate,
One or more mixing in diethyleneglycol dimethacrylate.
Further, the silane coupler is VTES, vinyltrimethoxy silane, vinyl
In three tert-butyl peroxide silane, vinyltriacetoxy silane, vinyl three ('beta '-methoxy ethyoxyl) silane at least
It is a kind of.
Further, the white filler, is titanium dioxide, white carbon, the white inorganic particle of barium sulfate.
Further, the white filler surface is handled by Coated with Organic Matter, is processed into the EVA of 30-70% concentration
Used after white master batch.
Further, the gross thickness that the eutectic refers to the compound white photovoltaic glued membranes of EVA is 350-750 μm.
After said structure, products application produced by the present invention is in extensive range, and reflecting rate reaches more than 90%, Neng Gouti
The photoelectric transformation efficiency of high photovoltaic module, and can eliminate simultaneously bubble and it is hidden split, fold and the white phenomenon of overflowing.In addition, tool
There are following characteristics：
1st, EVA adhesive film hot melt viscosity can be greatly improved by referring to EVA micelles from eutectic, reduced it and heated mobility, reduce
Its fold and white risk of overflowing in vacuum is laminated.
2nd, EVA compound cutans are produced from three-layer co-extruded method, upper and lower two layers is transparent EVA layer, and intermediate layer is white
EVA layer.Because tunica albuginea is by two layers of transparent plastic mulching, its fold and the white wind that overflows in vacuum is laminated further is reduced
Danger, while the thickness of tunica albuginea is also reduced, the dosage of titanium dioxide is reduced on the basis of reflecting rate is ensured, reduces and is manufactured into
This.Tunica albuginea, which is caught in the middle, simultaneously is not involved in bonding with glass or backboard, and hyaline membrane is again without filling white filler, so guarantor
Hold higher cohesive force.
Brief description of the drawings
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.
Fig. 1 is the structural representation that eutectic of the present invention refers to the compound white photovoltaic glued membranes of tri- layers of EVA.
In figure：1 is middle white EVA layer, and 2 be upper strata transparent EVA layer, and 3 be lower floor's transparent EVA layer, and 4 be white filler
Embodiment
As shown in figure 1, the eutectic of the present invention refers to the compound white photovoltaic glued membranes of tri- layers of EVA, including the He of middle white EVA layer 1
The upper strata transparent EVA layer 2 and lower floor's transparent EVA layer 3 being arranged on above and below middle white EVA layer, containing white in middle white EVA layer
Filler.
The material used is：
Major ingredient：Ethylene-vinyl acetate copolymer (EVA).VA contents are 33%, melting means 7.5g/10min.
Titanium dioxide：Surface is handled by Coated with Organic Matter, is used after being processed into the EVA white master batch of 30-70% concentration.
Antioxidant:Main antioxygen base is β-(3,5- di-tert-butyl-hydroxy phenyls) propionic acid octadecanol ester；Auxiliary anti-oxidant is
The compound of three (4- nonyl phenols) phosphite esters and phosphorous acid three (2,4- di-tert-butyl-phenyls) ester.
Crosslinking agent:Crosslinking and curing agent is the peroxidating 2- ethylhexyl carbonates tert-butyl ester and 3,3- bis- (t-butyl peroxy) butyric acid
The compound of ethyl ester；Assistant crosslinking agent is Triallyl isocyanurate, TAC and trimethylolpropane tris first
The compound of base acrylate.
Silane coupler：Vinyl three ('beta '-methoxy ethyoxyl) silane.
The technological process of production of this patent is：Batch mixing-double-deck extrusion-curtain coating-thickness measuring-embossing-sizing-trimming-winding-bag
Dress.
Formula such as table 1
Transparent EVA layer formula is according to EVA：Antioxidant：Crosslinking agent：Silane coupler=100:0.5:2.0:0.5, white
EVA layer formula is according to EVA：Titanium dioxide：Antioxidant：Crosslinking agent：Silane coupler=1:90:10:0.5:2.0:0.5, tunica albuginea is matched somebody with somebody
Square titanium dioxide adding proportion calculates according to (the total adding proportion * gross thickness/tunica albuginea thickness of composite membrane), tunica albuginea formula EVA addition ratios
Example is calculated according to (100- tunica albuginea titanium dioxides adding proportion), and above-mentioned material is sufficiently mixed uniformly in the ratio of table 1, is separately added into
To two extruder hoppers, melting coextrusion, 80~90 DEG C of the temperature humidity in each region of extruder, die head, through coextruding die are carried out
Head extrusion, is cooled down by way of casting roller, then is shaped after thickness measuring, embossing procedure, finally trimming, winding again, packaging and storage.So
Transmissivity, ageing-resistant test and cell piece power test are carried out afterwards.
Table 1-different embodiments formula and performance
The embodiment of the present invention is so the foregoing described, but those skilled in the art should be appreciated that these
It is merely illustrative of, various changes or modifications can be made to present embodiment, without departing from the principle and essence of the present invention, sheet
The protection domain of invention is only limited by the claims that follow.
Claims (9)
1. a kind of eutectic refers to the compound white photovoltaic glued membranes of tri- layers of EVA, it is characterised in that：Including middle white EVA layer and it is arranged on
Upper strata transparent EVA layer and lower floor's transparent EVA layer above and below middle white EVA layer, wherein white EVA layer weight/mass percentage composition is such as
Under：It is 80%~95% that eutectic, which refers to ethylene-vinyl acetate copolymer resin content, white filler 5%-20%, antioxidant content
For 0.05%~5%, content of crosslinking agent is 0.25%~2%, and silane coupled agent content is 0.1%~4%；Transparent EVA layer matter
It is as follows to measure percentage composition：It is 87%~98% that eutectic, which refers to ethylene-vinyl acetate copolymer resin content, and antioxidant content is
0.05%~5%, content of crosslinking agent is 0.25%~2%, and silane coupled agent content is 0.1%~4%.
2. refer to the compound white photovoltaic glued membranes of tri- layers of EVA according to the eutectic described in claim 1, it is characterised in that：The eutectic refers to
The molar content of vinyl acetate is 20%~50% in ethylene-vinyl acetate copolymer resin, and the eutectic refers to ethyl vinyl acetate second
The melt flow rate (MFR) of alkene copolymer resin is 1.0g/10min~10g/10min.
3. refer to the compound white photovoltaic glued membranes of tri- layers of EVA according to the eutectic described in claim 1, it is characterised in that：The antioxidant
Including primary antioxidant and auxiliary anti-oxidant, wherein, the main antioxygen base is β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid 18
Carbon alcohol ester；The auxiliary anti-oxidant is three (4- nonyl phenols) phosphite esters and/or phosphorous acid three (2,4- di-tert-butyl-phenyls) ester.
4. refer to the compound white photovoltaic glued membranes of tri- layers of EVA according to the eutectic described in claim 3, it is characterised in that：The auxiliary antioxygen
Agent is the compound of three (4- nonyl phenols) phosphite esters and phosphorous acid three (2,4- di-tert-butyl-phenyls) ester.
5. refer to the compound white photovoltaic glued membranes of tri- layers of EVA according to the eutectic described in claim 1, it is characterised in that：The crosslinking agent
Including crosslinking and curing agent and assistant crosslinking agent, wherein, the crosslinking and curing agent includes organic peroxide and/or azo-compound,
The organic peroxide is included for dicumyl peroxide, di-tert-butyl peroxide, di-isopropylbenzene hydroperoxide, 2,5- diformazans
Base -2,5 di-t-butyl hexane peroxide, 4,4- bis- (t-amyl peroxy) valeric acid n-butyl, peroxidating 2- ethylhexyl carbonates
One or more in the tert-butyl ester, 3,3- bis- (t-butyl peroxy) ethyl butyrate；The assistant crosslinking agent includes triallyl isocyanide
In urea acid esters, TAC, trimethylol-propane trimethacrylate, diethyleneglycol dimethacrylate
One or more mixing.
6. refer to the compound white photovoltaic glued membranes of tri- layers of EVA according to the eutectic described in claim 1, it is characterised in that：The silane is even
Connection agent is VTES, vinyltrimethoxy silane, the tert-butyl peroxide silane of vinyl three, vinyl three
At least one of acetoxylsilane, vinyl three ('beta '-methoxy ethyoxyl) silane.
7. refer to the compound white photovoltaic glued membranes of tri- layers of EVA according to the eutectic described in claim 1, it is characterised in that：The white is filled out
Material, is titanium dioxide, white carbon, the white inorganic particle of barium sulfate.
8. refer to the compound white photovoltaic glued membranes of tri- layers of EVA according to the eutectic described in claim 7, it is characterised in that：The white is filled out
Expect that surface is handled by Coated with Organic Matter, used after being processed into the EVA white master batch of 30-70% concentration.
9. refer to the compound white photovoltaic glued membranes of tri- layers of EVA according to the eutectic described in claim 1, it is characterised in that：The eutectic refers to
The gross thickness of the compound white photovoltaic glued membranes of EVA is 350-750 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710785198.2A CN107556930A (en) | 2017-09-04 | 2017-09-04 | Eutectic refers to the compound white photovoltaic glued membranes of tri- layers of EVA |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710785198.2A CN107556930A (en) | 2017-09-04 | 2017-09-04 | Eutectic refers to the compound white photovoltaic glued membranes of tri- layers of EVA |
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| CN107556930A true CN107556930A (en) | 2018-01-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710785198.2A Pending CN107556930A (en) | 2017-09-04 | 2017-09-04 | Eutectic refers to the compound white photovoltaic glued membranes of tri- layers of EVA |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109796909A (en) * | 2019-02-14 | 2019-05-24 | 苏州赛伍应用技术股份有限公司 | A kind of permanent non-fading colored packaging adhesive film and preparation method thereof |
| CN110010715A (en) * | 2019-05-08 | 2019-07-12 | 苏州赛伍应用技术股份有限公司 | A kind of multilayer encapsulation glue film |
| CN110003805A (en) * | 2019-03-12 | 2019-07-12 | 常州斯威克光伏新材料有限公司 | One kind three layers of highly reliable high-gain EVA and PO composite photo voltaic glue film and preparation method thereof |
| CN114891450A (en) * | 2021-06-30 | 2022-08-12 | 福斯特(嘉兴)新材料有限公司 | Multilayer reflection packaging adhesive film and photovoltaic module |
| CN114940871A (en) * | 2021-06-30 | 2022-08-26 | 福斯特(嘉兴)新材料有限公司 | Three-layer packaging material and photovoltaic module |
| CN115746739A (en) * | 2023-01-09 | 2023-03-07 | 常州斯威克光伏新材料有限公司 | White foaming adhesive film and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109796909A (en) * | 2019-02-14 | 2019-05-24 | 苏州赛伍应用技术股份有限公司 | A kind of permanent non-fading colored packaging adhesive film and preparation method thereof |
| CN110003805A (en) * | 2019-03-12 | 2019-07-12 | 常州斯威克光伏新材料有限公司 | One kind three layers of highly reliable high-gain EVA and PO composite photo voltaic glue film and preparation method thereof |
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| CN114891450A (en) * | 2021-06-30 | 2022-08-12 | 福斯特(嘉兴)新材料有限公司 | Multilayer reflection packaging adhesive film and photovoltaic module |
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| CN114940871B (en) * | 2021-06-30 | 2024-05-14 | 福斯特(嘉兴)新材料有限公司 | Three-layer packaging material and photovoltaic module |
| CN115746739A (en) * | 2023-01-09 | 2023-03-07 | 常州斯威克光伏新材料有限公司 | White foaming adhesive film and preparation method thereof |
| CN115746739B (en) * | 2023-01-09 | 2023-04-07 | 常州斯威克光伏新材料有限公司 | White foaming adhesive film and preparation method thereof |
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