CN103725210B - EVA film for solar cell packaging and preparation method of EVA film - Google Patents
EVA film for solar cell packaging and preparation method of EVA film Download PDFInfo
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- CN103725210B CN103725210B CN201310646465.XA CN201310646465A CN103725210B CN 103725210 B CN103725210 B CN 103725210B CN 201310646465 A CN201310646465 A CN 201310646465A CN 103725210 B CN103725210 B CN 103725210B
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- butyl
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/04—Particle-shaped
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
- B29C48/405—Intermeshing co-rotating screws
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/875—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling for achieving a non-uniform temperature distribution, e.g. using barrels having both cooling and heating zones
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92895—Barrel or housing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Photovoltaic Devices (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Sealing Material Composition (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to an EVA film for solar cell packaging and a preparation method of the EVA film. The EVA film consists of the following components by mass: 80 to 90% of ethylene-vinyl acetate copolymer, 1 to 2% of tert-Butyl peroxybenzoate, 0.5 to 1% of epoxy propoxy propyl trimethoxy silane, 0.05 to 2% of trisnonylphenylphosphite, 0.5 to 1% of tert-butylperoxy 2-ethylhexyl carbonate, 1 to 3% of hexadecyl 3,5-di-tert-butyl-4-hydroxy-benzoate and the balance of an organic solvent. The EVA film for the solar cell packaging has the advantages of high volume resistivity, high transmittance and low yellowing rate, and meanwhile improves the photoelectric conversion rate of a battery pack, and the preparation method of the EVA film for the solar cell packaging is simple in technology, convenient to operate, good in dispersibility, good in adhesiveness and high in stability.
Description
Technical field
The present invention relates to a kind of EVA adhesive film for solar cell package and preparation method thereof, belong to technical field of organic chemistry.
Background technology
Under the situation of global warming, human ecological environment deterioration, conventional energy resources shortage, the strategy of sustainable development is accepted by countries in the world.Sun power has the advantages such as spatter property, security, resource abundance, is 21st century one of most important new forms of energy, is subject to attention and the support of national governments.Photovoltaic market sharply expanded in recent years, and supply falls short of demand for photovoltaic products.
Along with the development of photovoltaic module science and technology and some problems of discovery in using, namely assembly is for a long time under action of high voltage, make to there is leakage current between glass, packaged material, a large amount of accumulation is on cell piece surface, the passivation effect of battery surface is worsened, cause FF, Jsc, Voc to reduce, make assembly property lower than standard.In 2010, NREL and Solon confirmed the p-type crystal-silicon battery slice no matter which kind of technology assembly adopts, and assembly has the risk of PID under negative bias.In view of the raising that development and the photovoltaic plant of current photovoltaic industry science and technology require photovoltaic module, photovoltaic module manufacturing enterprise all adds tight requirement to product quality, using PID test passes as the qualified additional index of photovoltaic module.About causing PID to test the reason do not met the demands, now more consistent understanding is as follows: external cause: in high temperature, humidity and the serious corrosion of the photovoltaic module that causes due to photovoltaic DC-to-AC converter array ground mode and decline; Internal cause: system, assembly and cell piece three aspects all can cause PID phenomenon.
In assembly, the packaged material adopting performance good is one of approach preventing PID from occurring, and wherein the volume specific resistance of packaged material (being generally EVA adhesive film) wishes to be not less than 1 × 10
15Ω cm.External photovoltaic module is produced, and strict for various raw-material control, do not use defective starting material, therefore the PID of photovoltaic module can meet the demands substantially.Wherein EVA glue film for photovoltaic component is without particular requirement, and volume specific resistance is 1 × 10
14the EVA adhesive film of Ω cm can meet the demands, but the volume specific resistance of external a lot of EVA adhesive film all reaches 1 × 10
15Ω cm is even higher.According to the situation of domestic relative photo photovoltaic assembly manufacturing enterprise reflection, the photovoltaic module adopting Monocrystalline silicon cell piece to produce, adopts existing EVA adhesive film can meet PID test request.Adopt the photovoltaic module that polycrystalline silicon battery plate is produced, if when polycrystal silicon cell tablet quality is good, adopt existing EVA adhesive film also can meet PID test request, according to polycrystalline silicon battery plate more of poor quality, adopt existing EVA adhesive film can not meet PID test request, after PID test, the generated output of photovoltaic module reduces a lot, substantially exceeds the limit value of 5%.Make a general survey of domestic existing EVA adhesive film, volume specific resistance is all lower.
Summary of the invention
The technical problem that the present invention solves is: propose a kind of EVA adhesive film for solar cell package, high volume specific resistance, high permeability, low xanthate ratio can be had, improve the photoelectric conversion rate of series of cells simultaneously, and a kind of technique is simple, easy to operate, and the preparation method of the EVA adhesive film of the solar cell package that good dispersity, binding property are good, stability is high.
The technical scheme proposed to solve one of them technical problem above-mentioned is: ethylene-vinyl acetate base co-polymer 80 ~ 90%, peroxidized t-butyl perbenzoate 1 ~ 2%, glycidoxypropyltrime,hoxysilane 0.5 ~ 1%, three (nonyl phenyl) phosphorous acid ester 0.05 ~ 2%, tert-butyl hydroperoxide 2-ethylhexyl carbonate 0.5 ~ 1%, 3,5-di-tert-butyl-4-hydroxybenzoic acid cetyl ester 1 ~ 3%, surplus is organic solvent;
In described ethylene-vinyl acetate base co-polymer, the massfraction of vinyl acetate is 29.4 ~ 29.7%;
Described peroxidized t-butyl perbenzoate is crosslinking and curing agent;
Described glycidoxypropyltrime,hoxysilane is silane coupling agent;
Described three (nonyl phenyl) phosphorous acid ester is antioxidant;
Described tert-butyl hydroperoxide 2-ethylhexyl carbonate is crosslinking and curing agent;
Described 3,5-di-tert-butyl-4-hydroxybenzoic acid cetyl esters are uv-absorbing agent.
A kind of preferred technical scheme is: in described ethylene-vinyl acetate base co-polymer, the mass percent of vinyl acetate is 29.5%.
A kind of preferred technical scheme is: the mass percent of described peroxidized t-butyl perbenzoate is 1.6 ~ 1.8%.
A kind of preferred technical scheme is: the mass ratio of described 3,5-di-tert-butyl-4-hydroxybenzoic acid cetyl esters is 2%.
A kind of preferred technical scheme is: in order to make this EVA adhesive film stability for solar cell package better, described organic solvent is propyl alcohol or Virahol.
The present invention is the technical scheme solving another technical problem above-mentioned proposition: a kind of preparation method of the EVA adhesive film for solar cell package, comprises the following steps:
A. prepare burden: take raw material, the described EVA adhesive film for solar cell package is made up of following according to mass percent: ethylene-vinyl acetate base co-polymer 80 ~ 90%, peroxidized t-butyl perbenzoate 1 ~ 2%, glycidoxypropyltrime,hoxysilane 0.5 ~ 1%, three (nonyl phenyl) phosphorous acid ester 0.05 ~ 2%, tert-butyl hydroperoxide 2-ethylhexyl carbonate 0.5 ~ 1%, 3,5-di-tert-butyl-4-hydroxybenzoic acid cetyl ester 1 ~ 3%, surplus is organic solvent;
In described ethylene-vinyl acetate base co-polymer, the massfraction of vinyl acetate is 29.4 ~ 29.7%;
Described peroxidized t-butyl perbenzoate is crosslinking and curing agent;
Described glycidoxypropyltrime,hoxysilane is silane coupling agent;
Described three (nonyl phenyl) phosphorous acid ester is antioxidant;
Described tert-butyl hydroperoxide 2-ethylhexyl carbonate is crosslinking and curing agent;
Described 3,5-di-tert-butyl-4-hydroxybenzoic acid cetyl esters are uv-absorbing agent.
B. mix: add ethylene-vinyl acetate base co-polymer, peroxidized t-butyl perbenzoate, glycidoxypropyltrime,hoxysilane, three (nonyl phenyl) phosphorous acid ester, tert-butyl hydroperoxide 2-ethylhexyl carbonate, 3,5-di-tert-butyl-4-hydroxybenzoic acid cetyl ester, organic solvent, fully mix;
C. extrude: pour step B gained mixture in double-screw extruding pelletizing machine mixing granulator, twin screw extruder is divided into three sections, i.e. entrance, interlude and outlet section, and its temperature is controlled as: 82 DEG C, 91 DEG C, 87 DEG C;
D. film forming: the particulate matter after granulation can obtain the EVA adhesive film for solar cell package through film-forming system.
A kind of preferred technical scheme is: in described ethylene-vinyl acetate base co-polymer, the mass percent of vinyl acetate is 29.5%.
A kind of preferred technical scheme is: the mass percent of described peroxidized t-butyl perbenzoate is 1.6 ~ 1.8%.
A kind of preferred technical scheme is: the mass ratio of described 3,5-di-tert-butyl-4-hydroxybenzoic acid cetyl esters is 2%.
A kind of preferred technical scheme is: in order to make this EVA adhesive film stability for solar cell package better, described organic solvent is propyl alcohol or Virahol.
Beneficial effect of the present invention is as follows:
(1) of the present invention for comprising described 3 in the EVA adhesive film of solar cell package, 5-di-tert-butyl-4-hydroxybenzoic acid cetyl ester is uv-absorbing agent, make EVA adhesive film have lower ultraviolet cut-on wavelength, increase the power stage of assembly, improve the photoelectric conversion rate of series of cells.
(2) of the present invention is 29 ~ 31% for the massfraction of vinyl acetate in ethylene-vinyl acetate base co-polymer in the EVA adhesive film of solar cell package, if vinyl acetate content is few in raw material, then good heat resistance, but cohesiveness and low-temperature flexibility type poor; Vinyl acetate content is more, then there are good low temperature flexibility and cohesiveness, in traditional technology, the massfraction of vinyl acetate is generally 28 ~ 33%, but contriver is by repeatedly testing, find when in ethylene-vinyl acetate base co-polymer, the massfraction of vinyl acetate is 29.4 ~ 29.7%, the EVA adhesive film of obtained solar cell package can obtain higher volume specific resistance, optimizes the anti-PID ability of EVA adhesive film.
(3) EVA adhesive film for solar cell package of the present invention selects appropriate peroxidized t-butyl perbenzoate to be crosslinking and curing agent; Glycidoxypropyltrime,hoxysilane is silane coupling agent; Three (nonyl phenyl) phosphorous acid ester is antioxidant; Tert-butyl hydroperoxide 2-ethylhexyl carbonate is crosslinking and curing agent, can make that the good dispersity of the EVA adhesive film of solar cell package, binding property are good, stability is high.
(4) preparation method of the EVA adhesive film for solar cell package of the present invention is first by ethylene-vinyl acetate base co-polymer, peroxidized t-butyl perbenzoate, glycidoxypropyltrime,hoxysilane, three (nonyl phenyl) phosphorous acid ester, tert-butyl hydroperoxide 2-ethylhexyl carbonate, 3,5-di-tert-butyl-4-hydroxybenzoic acid cetyl ester, organic solvent, fully mix; Pour gained mixture in double-screw extruding pelletizing machine mixing granulator, twin screw extruder is divided into three sections, i.e. entrance, interlude and outlet section, and its temperature is controlled as: 82 DEG C, 91 DEG C, 87 DEG C; Particulate matter after granulation can obtain solar cell through film-forming system and turn light EVA adhesive film.This preparation method's technique is simple, easy and simple to handle, and EVA adhesive film good dispersity, the binding property of obtained solar cell package are good, stability is high.
Embodiment
Embodiment 1
The EVA adhesive film for solar cell package of the present embodiment, configures according to following mass percent:
Ethylene-vinyl acetate base co-polymer 80%, peroxidized t-butyl perbenzoate 1%, glycidoxypropyltrime,hoxysilane 0.5%, three (nonyl phenyl) phosphorous acid ester 0.05%, tert-butyl hydroperoxide 2-ethylhexyl carbonate 0.5%, 3,5-di-tert-butyl-4-hydroxybenzoic acid cetyl ester 1%, surplus is propyl alcohol;
In described ethylene-vinyl acetate base co-polymer, the massfraction of vinyl acetate is 29.4%;
Described peroxidized t-butyl perbenzoate is crosslinking and curing agent;
Described glycidoxypropyltrime,hoxysilane is silane coupling agent;
Described three (nonyl phenyl) phosphorous acid ester is antioxidant;
Described tert-butyl hydroperoxide 2-ethylhexyl carbonate is crosslinking and curing agent;
Described 3,5-di-tert-butyl-4-hydroxybenzoic acid cetyl esters are uv-absorbing agent.
The preparation method of the EVA adhesive film for solar cell package of the present embodiment, comprises following concrete steps:
A. prepare burden: take appropriate ethylene-vinyl acetate base co-polymer according to above-mentioned formula consumption, peroxidized t-butyl perbenzoate, glycidoxypropyltrime,hoxysilane, three (nonyl phenyl) phosphorous acid ester, tert-butyl hydroperoxide 2-ethylhexyl carbonate, 3,5-di-tert-butyl-4-hydroxybenzoic acid cetyl ester, surplus is propyl alcohol;
In described ethylene-vinyl acetate base co-polymer, the massfraction of vinyl acetate is 29.4%;
B. mix: add ethylene-vinyl acetate base co-polymer, peroxidized t-butyl perbenzoate, glycidoxypropyltrime,hoxysilane, three (nonyl phenyl) phosphorous acid ester, tert-butyl hydroperoxide 2-ethylhexyl carbonate, 3,5-di-tert-butyl-4-hydroxybenzoic acid cetyl ester, propyl alcohol, fully mix;
C. extrude: pour step B gained mixture in double-screw extruding pelletizing machine mixing granulator, twin screw extruder is divided into three sections, i.e. entrance, interlude and outlet section, and its temperature is controlled as: 82 DEG C, 91 DEG C, 87 DEG C;
D. film forming: the particulate matter after granulation can obtain the EVA adhesive film for solar cell package through film-forming system.
Embodiment 2
The rest part of the EVA adhesive film for solar cell package of the present embodiment is identical with embodiment 1, and difference is:
The present embodiment is used for the EVA adhesive film of solar cell package, composed of the following components:
Ethylene-vinyl acetate base co-polymer 90%, peroxidized t-butyl perbenzoate 2%, glycidoxypropyltrime,hoxysilane 1%, three (nonyl phenyl) phosphorous acid ester 2%, tert-butyl hydroperoxide 2-ethylhexyl carbonate 1%, 3,5-di-tert-butyl-4-hydroxybenzoic acid cetyl ester 3%, surplus is Virahol;
In described ethylene-vinyl acetate base co-polymer, the massfraction of vinyl acetate is 29.7%;
Embodiment 3
The rest part of the EVA adhesive film for solar cell package of the present embodiment is identical with embodiment 1, and difference is:
The present embodiment is used for the EVA adhesive film of solar cell package, composed of the following components:
Ethylene-vinyl acetate base co-polymer 89%, peroxidized t-butyl perbenzoate 1.8%, glycidoxypropyltrime,hoxysilane 0.9%, three (nonyl phenyl) phosphorous acid ester 2%, tert-butyl hydroperoxide 2-ethylhexyl carbonate 1%, 3,5-di-tert-butyl-4-hydroxybenzoic acid cetyl ester 2%, surplus is Virahol;
In described ethylene-vinyl acetate base co-polymer, the massfraction of vinyl acetate is 29.5%;
Embodiment 4
The rest part of the EVA adhesive film for solar cell package of the present embodiment is identical with embodiment 1, and difference is:
The present embodiment is used for the EVA adhesive film of solar cell package, composed of the following components:
Ethylene-vinyl acetate base co-polymer 88%, peroxidized t-butyl perbenzoate 1.7%, glycidoxypropyltrime,hoxysilane 0.7%, three (nonyl phenyl) phosphorous acid ester 1.8%, tert-butyl hydroperoxide 2-ethylhexyl carbonate 0.9%, 3,5-di-tert-butyl-4-hydroxybenzoic acid cetyl ester 2.5%, surplus is propyl alcohol;
In described ethylene-vinyl acetate base co-polymer, the massfraction of vinyl acetate is 29.5%;
Embodiment 5
The rest part of the EVA adhesive film for solar cell package of the present embodiment is identical with embodiment 1, and difference is:
The present embodiment is used for the EVA adhesive film of solar cell package, composed of the following components:
Ethylene-vinyl acetate base co-polymer 85%, peroxidized t-butyl perbenzoate 1.5%, glycidoxypropyltrime,hoxysilane 0.8%, three (nonyl phenyl) phosphorous acid ester 1.5%, tert-butyl hydroperoxide 2-ethylhexyl carbonate 0.7%, 3,5-di-tert-butyl-4-hydroxybenzoic acid cetyl ester 2%, surplus is Virahol;
In described ethylene-vinyl acetate base co-polymer, the massfraction of vinyl acetate is 29.6%;
The concrete technical scheme be not limited to described in above-described embodiment of the present invention, all employings are equal to replaces the protection domain that the technical scheme formed is application claims.
(comparative example 1)
The present embodiment is used for the EVA adhesive film of solar cell package, composed of the following components:
Ethylene-vinyl acetate base co-polymer 85%, peroxidized t-butyl perbenzoate 1.5%, glycidoxypropyltrime,hoxysilane 0.8%, three (nonyl phenyl) phosphorous acid ester 1.5%, tert-butyl hydroperoxide 2-ethylhexyl carbonate 0.7%, surplus is Virahol;
In described ethylene-vinyl acetate base co-polymer, the massfraction of vinyl acetate is 28%.
The preparation method of the EVA adhesive film for solar cell package of the present embodiment is identical with embodiment 1.
(comparative example 2)
The present embodiment is used for the EVA adhesive film of solar cell package, composed of the following components:
Ethylene-vinyl acetate base co-polymer 85%, peroxidized t-butyl perbenzoate 1.5%, glycidoxypropyltrime,hoxysilane 0.8%, three (nonyl phenyl) phosphorous acid ester 1.5%, tert-butyl hydroperoxide 2-ethylhexyl carbonate 0.7%, surplus is Virahol;
In described ethylene-vinyl acetate base co-polymer, the massfraction of vinyl acetate is 33%.
The preparation method of the EVA adhesive film for solar cell package of the present embodiment is identical with embodiment 1.
(comparative example 3)
The present embodiment is used for the EVA adhesive film of solar cell package, composed of the following components:
Ethylene-vinyl acetate base co-polymer 85%, peroxidized t-butyl perbenzoate 1.5%, glycidoxypropyltrime,hoxysilane 0.8%, three (nonyl phenyl) phosphorous acid ester 1.5%, tert-butyl hydroperoxide 2-ethylhexyl carbonate 0.7%, surplus is Virahol;
In described ethylene-vinyl acetate base co-polymer, the massfraction of vinyl acetate is 33%.
The preparation method of the EVA adhesive film for solar cell package of the present embodiment is identical with embodiment 1.
The property indices being used for the EVA adhesive film of solar cell package of the various embodiments described above and comparative example is measured by the following method:
1, resistance to ultraviolet(ray) radiation energy
Test sample book is the glued membrane multi-disc of 0.5mm.Uv-radiation ageing testing method is International Electrotechnical Commission IEC61345 standard, and test condition is: temperature 60 ± 5 DEG C, wavelength 200 ~ 400nm, irradiation intensity 15KWh/m2.Determination of light transmittance presses GB/T2410 standard, its printing opacity conservation rate=(sample mean transmittance after irradiation/pre-irradiation sample mean transmittance) × 100%.Yellowness index is analyzed according to GB2409-80.
2, wet and heat ageing resistant performance
Wet and heat ageing resistant testing method presses GB/T2423.3 standard, and test condition is: temperature 85 DEG C, relative humidity 85%, time 2000h.Determination of light transmittance presses GB/T2410 standard, its printing opacity conservation rate=(sample mean transmittance after irradiation/pre-irradiation sample mean transmittance) × 100%.Yellowness index is analyzed according to GB2409-80.
Above-mentioned test result is as shown in the table:
The test-results of the sample of each embodiment of table 1 and comparative example
It is known that comparative example and each embodiment carry out contrast, and when in ethylene-vinyl acetate base co-polymer, the massfraction of vinyl acetate is 28% or 33%, the volume specific resistance of the EVA adhesive film of solar cell package is 1.61 × 10
14Ω cm
-1, compared with each embodiment, the requirement of the volume specific resistance of higher EVA adhesive film can not be met; And when in embodiment employing ethylene-vinyl acetate base co-polymer, the massfraction of vinyl acetate is 29.4 ~ 29.7%, the volume specific resistance of the EVA adhesive film of solar cell package is 1.21 × 10
15Ω cm
-1, the volume specific resistance of higher EVA adhesive film can be met.
It is known that comparative example and each embodiment carry out contrast, select appropriate 3,5-di-tert-butyl-4-hydroxybenzoic acid cetyl ester is uv-absorbing agent, peroxidized t-butyl perbenzoate is crosslinking and curing agent, glycidoxypropyltrime,hoxysilane is silane coupling agent, three (nonyl phenyl) phosphorous acid ester is antioxidant, tert-butyl hydroperoxide 2-ethylhexyl carbonate is crosslinking and curing agent, the stripping strength result of the printing opacity conservation rate of gained embodiment 1 to 5, photoelectric conversion rate and glass thereof is obviously better than comparative example, shows the superiority of formula.
EVA adhesive film for solar cell package of the present invention and preparation method thereof is not limited to the various embodiments described above, and above-described embodiment is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.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 embodiments.And these belong to spirit institute's apparent change of extending out of the present invention or change and are still among protection scope of the present invention.
Claims (10)
1. for an EVA adhesive film for solar cell package, it is characterized in that: composed of the following components according to mass percent:
Ethylene-vinyl acetate base co-polymer 80 ~ 90%, peroxidized t-butyl perbenzoate 1 ~ 2%, glycidoxypropyltrime,hoxysilane 0.5 ~ 1%, three (nonyl phenyl) phosphorous acid ester 0.05 ~ 2%, tert-butyl hydroperoxide 2-ethylhexyl carbonate 0.5 ~ 1%, 3,5-di-tert-butyl-4-hydroxybenzoic acid cetyl ester 1 ~ 3%, surplus is organic solvent;
In described ethylene-vinyl acetate base co-polymer, the massfraction of vinyl acetate is 29.4 ~ 29.7%;
Described peroxidized t-butyl perbenzoate is crosslinking and curing agent;
Described glycidoxypropyltrime,hoxysilane is silane coupling agent;
Described three (nonyl phenyl) phosphorous acid ester is antioxidant;
Described tert-butyl hydroperoxide 2-ethylhexyl carbonate is crosslinking and curing agent;
Described 3,5-di-tert-butyl-4-hydroxybenzoic acid cetyl esters are uv-absorbing agent.
2. the EVA adhesive film for solar cell package according to claim 1, is characterized in that: in described ethylene-vinyl acetate base co-polymer, the mass percent of vinyl acetate is 29.5%.
3. the EVA adhesive film for solar cell package according to claim 1, is characterized in that: the mass percent of described peroxidized t-butyl perbenzoate is 1.6 ~ 1.8%.
4. the EVA adhesive film for solar cell package according to claim 1, is characterized in that: the mass ratio of described 3,5-di-tert-butyl-4-hydroxybenzoic acid cetyl esters is 2%.
5. the EVA adhesive film for solar cell package according to claim 1, is characterized in that: described organic solvent is propyl alcohol or Virahol.
6. for a preparation method for the EVA adhesive film of solar cell package, it is characterized in that: comprise the following steps:
A. prepare burden: take raw material, the described EVA adhesive film for solar cell package is made up of following according to mass percent: ethylene-vinyl acetate base co-polymer 80 ~ 90%, peroxidized t-butyl perbenzoate 1 ~ 2%, glycidoxypropyltrime,hoxysilane 0.5 ~ 1%, three (nonyl phenyl) phosphorous acid ester 0.05 ~ 2%, tert-butyl hydroperoxide 2-ethylhexyl carbonate 0.5 ~ 1%, 3,5-di-tert-butyl-4-hydroxybenzoic acid cetyl ester 1 ~ 3%, surplus is organic solvent;
In described ethylene-vinyl acetate base co-polymer, the massfraction of vinyl acetate is 29.4 ~ 29.7%;
Described peroxidized t-butyl perbenzoate is crosslinking and curing agent;
Described glycidoxypropyltrime,hoxysilane is silane coupling agent;
Described three (nonyl phenyl) phosphorous acid ester is antioxidant;
Described tert-butyl hydroperoxide 2-ethylhexyl carbonate is crosslinking and curing agent;
Described 3,5-di-tert-butyl-4-hydroxybenzoic acid cetyl esters are uv-absorbing agent;
B. mix: add ethylene-vinyl acetate base co-polymer, peroxidized t-butyl perbenzoate, glycidoxypropyltrime,hoxysilane, three (nonyl phenyl) phosphorous acid ester, tert-butyl hydroperoxide 2-ethylhexyl carbonate, 3,5-di-tert-butyl-4-hydroxybenzoic acid cetyl ester, organic solvent, fully mix;
C. extrude: pour step B gained mixture in double-screw extruding pelletizing machine mixing granulator, twin screw extruder is divided into three sections, i.e. entrance, interlude and outlet section, and its temperature is controlled as: 82 DEG C, 91 DEG C, 87 DEG C;
D. film forming: the particulate matter after granulation can obtain the EVA adhesive film for solar cell package through film-forming system.
7. according to claim 6 for the preparation method of the EVA adhesive film of solar cell package, it is characterized in that: in described ethylene-vinyl acetate base co-polymer, the mass percent of vinyl acetate is 29.5%.
8. according to claim 6 for the preparation method of the EVA adhesive film of solar cell package, it is characterized in that: the mass percent of described peroxidized t-butyl perbenzoate is 1.6 ~ 1.8%.
9. according to claim 6 for the preparation method of the EVA adhesive film of solar cell package, it is characterized in that: the mass ratio of described 3,5-di-tert-butyl-4-hydroxybenzoic acid cetyl esters is 2%.
10. according to claim 6 for the preparation method of the EVA adhesive film of solar cell package, it is characterized in that: described organic solvent is propyl alcohol or Virahol.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102504714A (en) * | 2011-11-29 | 2012-06-20 | 浙江帝龙光电材料有限公司 | Solar cell packaging glue film |
| KR20120075000A (en) * | 2010-12-28 | 2012-07-06 | 호남석유화학 주식회사 | Resin compositions for encapsulant material of photovoltaic modules including metal nano powder |
| CN102559079A (en) * | 2012-01-09 | 2012-07-11 | 苏州泰科尼光伏材料有限公司 | Ethylene vinyl acetate (EVA) glue film for encapsulating solar battery |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120075000A (en) * | 2010-12-28 | 2012-07-06 | 호남석유화학 주식회사 | Resin compositions for encapsulant material of photovoltaic modules including metal nano powder |
| CN102504714A (en) * | 2011-11-29 | 2012-06-20 | 浙江帝龙光电材料有限公司 | Solar cell packaging glue film |
| CN102559079A (en) * | 2012-01-09 | 2012-07-11 | 苏州泰科尼光伏材料有限公司 | Ethylene vinyl acetate (EVA) glue film for encapsulating solar battery |
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