CN108329568A - A kind of heat-conducting type white EVA adhesive film and preparation method applied on photovoltaic module - Google Patents
A kind of heat-conducting type white EVA adhesive film and preparation method applied on photovoltaic module Download PDFInfo
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/06—Pretreated ingredients and ingredients covered by the main groups C08K3/00 - C08K7/00
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/002—Methods
-
- 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
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/24—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of indefinite length
-
- 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
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/34—Component parts, details or accessories; Auxiliary operations
- B29C41/52—Measuring, controlling or regulating
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
- C08K9/06—Ingredients treated with organic substances with silicon-containing compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2007/00—Flat articles, e.g. films or sheets
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2206—Oxides; Hydroxides of metals of calcium, strontium or barium
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/222—Magnesia, i.e. magnesium oxide
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- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
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- C08K3/00—Use of inorganic substances as compounding ingredients
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- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/16—Applications used for films
- C08L2203/162—Applications used for films sealable films
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- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
- C08L2203/206—Applications use in electrical or conductive gadgets use in coating or encapsulating of electronic parts
Abstract
The invention discloses a kind of heat-conducting type white EVA adhesive film and preparation method applied on photovoltaic module, which is prepared by the raw material of following parts by weight：0.1 0.6 parts of 100 parts of EVA resin, 6 12 parts of reflective filler, 20 34 parts of heat filling, 0.8 2.0 parts of organic per-compounds initiator, 0.8 2.5 parts of crosslinking coagent, 0.5 2.0 parts of coupling agent of thickening and antioxidant.The reflecting rate of the heat-conducting type white EVA adhesive film of the present invention is more than 93%, thermal conductivity reaches 0.6~0.8W/mK, one times of thermal conductivity more than common 0.2~0.3W/mK of EVA adhesive film or more, reduces by 2~4 DEG C of the solar cell nominal operating temperature of component, and overall efficiency promotes 2% or more.
Description
Technical field
The present invention relates to a kind of solar module encapsulating material technology more particularly to it is a kind of be applied to photovoltaic module on
Heat-conducting type white EVA adhesive film and preparation method.
Background technology
Solar cell will produce a large amount of heat during photovoltaic generation, this is to keep solar cell temperature raised
Main cause.Sunlight can be converted into electricity after being utilized by photovoltaic module, only less than 15% luminous energy by battery utilization
Can, the energy more than 85% is not utilized, these unserviceable energy parts are reflected back environment, and another part is then by component
Absorption, which is converted to heat, makes the temperature of component increase.Meanwhile solar cell will produce largely during carrying out photovoltaic generation
Heat makes battery temperature increase.Someone is by testing and being calculated, and solar cell temperature often increases l DEG C, opto-electronic conversion
Efficiency will be declined with the rate of 0.4-0.6%, and the transfer efficiency of solar cell is natively very low under normal circumstances, so this
The generating efficiency of battery is influenced very big.On the other hand, the temperature of inside battery is excessively high, seriously affects the stability of component,
EVA adhesive film is the component being in direct contact with battery, while being to be very easy to thermo-oxidative ageing again, and the thermo-oxidative ageing of glued membrane is to entire electricity
The service life of pond component will generate detrimental effects.
Conventional EVA adhesive film is mostly the non-conductor of heat, and the heat that photovoltaic module generates in use is difficult
Phenomena such as to be exported in time, reduce the generating efficiency of component, while will produce hot spot, xanthochromia, seriously affects the use of component
Service life.
Invention content
For overcome the deficiencies in the prior art, it is applied on photovoltaic module one of the objects of the present invention is to provide a kind of
Heat-conducting type white EVA adhesive film.Glued membrane reflectivity is improved by adding reflective filler in EVA adhesive film, improves component to the sun
The utilization rate of energy, to improve component generating efficiency, while adding heat filling in EVA adhesive film, improves glued membrane thermal conductivity, drop
The temperature of low component in actual application, and then improve the generating efficiency and reliability of component.
The second object of the present invention is to provide a kind of preparation applied to the heat-conducting type white EVA adhesive film on photovoltaic module
Method.The preparation process of heat-conducting type white EVA adhesive film is simple, little with the production technology difference of existing EVA adhesive film, in existing stream
It can be produced on rolling equipment, be conducive to produce in enormous quantities.
An object of the present invention adopts the following technical scheme that realization：A kind of heat-conducting type white applied on photovoltaic module
EVA adhesive film is prepared by the raw material of following parts by weight：100 parts of EVA resin, filler 6-12 parts reflective, heat filling 20-
34 parts, 0.8-2.0 parts of organic per-compounds initiator, 0.8-2.5 parts of crosslinking coagent, thickening 0.5-2.0 part of coupling agent and resist
0.1-0.6 parts of oxidant.
Further, it is 28-40%, melt index 20-80g/10min that the EVA resin, which is vinyl acetate content,
EVA resin.
Further, the reflective filler is the group of titanium oxide, zinc oxide, any one or two kinds in barium monoxide
It closes, grain size 10-500nm.
Further, the heat filling is the group of magnesia, aluminium oxide, any one or two kinds in zinc oxide
It closes, grain size 10-100nm.
Further, the organic per-compounds initiator is tert-butyl hydroperoxide carbonic acid -2- ethylhexyls, tertiary butyl
Peroxidating 2- ethylhexyls carbonic ester, t-butylperoxy formic acid 2- ethylhexyl esters, carbon peroxy acid-O, O- (1,1- dimethyl
Ethyl)-O- (2- ethylhexyls) ester, tert-butyl hydroperoxide carbonic acid -2- ethylhexyls, tert-butyl peroxy carbonic acid -2- ethylhexyls
One or more of mixture.
Further, the crosslinking coagent is triisopropyl fulminuric acid ester, Triallyl isocyanurate, three allyls
Base fulminuric acid ester, -2,4,6 (1H, 3H, 5H)-triketone of tri- -2- acrylic -1,3,5- triazines of 1,3,5-, triallyl isocyanide
The mixture of one or more of acid esters, triallyl isocyanurate, triallyl isocyanurate.
Further, the thickening coupling agent is three ethoxy silane of vinyl, (triethoxysilyl) ethylene, three second
The mixture of one or more of ethoxy ethylene silane, Triethoxyvinylsilane.
Further, the antioxidant is hindered amine light stabilizer, is selected from bis- (2,2,6,6- tetramethyl -4- piperidines
Alcohol) sebacate, the double -2,2,6,6- tetramethyl piperidines alcohol ester of decanedioic acid, three nitrogen of 2- (2 '-hydroxyls -5 '-aminomethyl phenyl)-benzo
Azoles.
The second object of the present invention adopts the following technical scheme that realization：A kind of heat-conducting type white applied on photovoltaic module
The preparation method of EVA adhesive film, including：
The step of dissolving thickening coupling agent：The thickening coupling agent for accounting for 40-60% formula ratios is dissolved in ethyl alcohol, is uniformly stirred
It mixes, the thickening coupling agent and ethyl alcohol miscible fluid that mass concentration is 1-4% is made；
The step of preparing modified filler：To thickening coupling agent in ethyl alcohol miscible fluid addition formula ratio reflective filler and lead
Hot filler, ultrasonic disperse 1-2h, 100-200 times/min of frequency of oscillation under room temperature, then solution is dried at 50-80 DEG C, it is made
Modified filler；
The step of preparing mixed aid：By the organic per-compounds initiator, crosslinking coagent, remaining thickening of formula ratio
Coupling agent and antioxidant are uniform in 50-70 DEG C of stirred in water bath, and mixed aid is made；
The step of preparing pre-composition：First the EVA resin of formula ratio is put into batch mixer, then gained mixed aid is slow
It is added in batch mixer, continues to stir 10-20min, then gained modified filler is added in batch mixer, continue to stir 20-
After 40min, pre-composition is made；
The step of molding：Gained pre-composition is imported in casting machine, is cast at 80-100 DEG C, the glued membrane being cast out is passed through
After crossing embossing, cooling, drawing, destatic and wind step, heat-conducting type white EVA adhesive film is made.
Further, the heat-conducting type white EVA adhesive film is prepared by the raw material of following parts by weight：EVA resin 100
Part, filler 6-12 parts reflective, 20-34 parts of heat filling, 0.8-2.0 parts of organic per-compounds initiator, crosslinking coagent 0.8-
0.1-0.6 parts of 2.5 parts, 0.5-2.0 parts of coupling agent of thickening and antioxidant.
Compared with prior art, the beneficial effects of the present invention are：
(1) reflecting rate of heat-conducting type white EVA adhesive film is more than 93%, and thermal conductivity reaches 0.6~0.8W/mK, is more than general
One times of the thermal conductivity or more of 0.2~0.3W/mK of logical EVA adhesive film, reduces by 2~4 DEG C of the solar cell nominal operating temperature of component,
Overall efficiency promotes 2% or more.
(2) preparation process of heat-conducting type white EVA adhesive film is simple, little with the production technology difference of existing EVA adhesive film,
It can be produced on existing casting apparatus, be conducive to produce in enormous quantities.
Specific implementation mode
In the following, in conjunction with specific implementation mode, the present invention is described further, it should be noted that is do not collided
Under the premise of, new embodiment can be formed between various embodiments described below or between each technical characteristic in any combination.
In the present invention, if not refering in particular to, all parts, percentage are unit of weight, used equipment and raw material etc.
It is commercially available or commonly used in the art.Method in following embodiments is unless otherwise instructed the normal of this field
Rule method.
A kind of heat-conducting type white EVA adhesive film applied on photovoltaic module is prepared by the raw material of following parts by weight：
100 parts of EVA resin, 0.8-2.0 parts of organic per-compounds initiator, is handed over filler 6-12 parts reflective, 20-34 parts of heat filling
Join 0.1-0.6 parts of 0.8-2.5 parts of auxiliary agent, 0.5-2.0 parts of coupling agent of thickening and antioxidant.
As further embodiment, the EVA resin is that vinyl acetate content is 28-40%, and melt index is
The EVA resin of 20-80g/10min.
As further embodiment, the reflective filler be titanium oxide, zinc oxide, in barium monoxide any one or
The combination that two kinds of person, grain size 10-500nm.The grain size of reflective filler is too small or excessive, it is difficult to evenly dispersed.
As further embodiment, the heat filling be magnesia, aluminium oxide, in zinc oxide any one or
The combination that two kinds of person, grain size 10-100nm.The grain size of heat filling is too small or excessive, it is difficult to evenly dispersed.
As further embodiment, the organic per-compounds initiator is tert-butyl hydroperoxide carbonic acid -2- second
The own ester of base, tert-butyl hydroperoxide 2- ethylhexyls carbonic ester, t-butylperoxy formic acid 2- ethylhexyl esters, carbon peroxy acid-O,
O- (1,1- dimethyl ethyls)-O- (2- ethylhexyls) ester, tert-butyl hydroperoxide carbonic acid -2- ethylhexyls, tert-butyl peroxy carbon
The mixture of one or more of acid -2- ethylhexyls.
As further embodiment, the crosslinking coagent is triisopropyl fulminuric acid ester, triallyl isocyanide
Urea acid esters, iso-cyanuric acid triallyl ester, -2,4,6 (1H, 3H, 5H)-three of tri- -2- acrylic -1,3,5- triazines of 1,3,5-
The mixing of one or more of ketone, triallyl isocyanate, triallyl isocyanurate, triallyl isocyanurate
Object.
As further embodiment, the thickening coupling agent is three ethoxy silane of vinyl, (triethoxy-silicane
Base) ethylene, triethoxy vinyl silane, one or more of Triethoxyvinylsilane mixture.
As further embodiment, the antioxidant is hindered amine light stabilizer, is selected from bis- (2,2,6,6- tetra-
Methyl -4- piperidine alcohols) sebacate, the double -2,2,6,6- tetramethyl piperidines alcohol ester of decanedioic acid, 2- (2 '-hydroxyls -5 '-methylbenzene
Base)-benzotriazole.
The preparation method of the heat-conducting type white EVA adhesive film, including：
The step of dissolving thickening coupling agent：The thickening coupling agent for accounting for 40-60% formula ratios is dissolved in ethyl alcohol, is uniformly stirred
It mixes, the thickening coupling agent and ethyl alcohol miscible fluid that mass concentration is 1-4% is made；
The step of preparing modified filler：To thickening coupling agent in ethyl alcohol miscible fluid addition formula ratio reflective filler and lead
Hot filler, ultrasonic disperse 1-2h, 100-200 times/min of frequency of oscillation under room temperature, then solution is dried at 50-80 DEG C, it is made
Modified filler；
The step of preparing mixed aid：By the organic per-compounds initiator, crosslinking coagent, remaining thickening of formula ratio
Coupling agent and antioxidant are uniform in 50-70 DEG C of stirred in water bath, and mixed aid is made；
The step of preparing pre-composition：First the EVA resin of formula ratio is put into batch mixer, then gained mixed aid is slow
It is added in batch mixer, continues to stir 10-20min, then gained modified filler is added in batch mixer, continue to stir 20-
After 40min, pre-composition is made；
The step of molding：Gained pre-composition is imported in casting machine, is cast at 80-100 DEG C, the glued membrane being cast out is passed through
After crossing embossing, cooling, drawing, destatic and wind step, heat-conducting type white EVA adhesive film is made.
It is specific embodiment of the present invention below, used raw material, equipment etc. remove special limit in the following embodiments
It can be obtained by buying pattern outside fixed.
Embodiment 1
The present invention provides a kind of heat-conducting type white EVA adhesive films of photovoltaic module, by the component system of following parts by weight
It is standby to form：100 parts of melt index be 20g/10min, VA content be 28% EVA resin, the titanium oxide of 6 parts of 10nm grain sizes it is (anti-
Light filler), magnesia (heat filling), the 0.8 part of tert-butyl hydroperoxide carbonic acid -2- ethylhexyl of 20 parts of 10nm grain sizes it is (organic
Per-compound initiator), 0.8 part of triisopropyl fulminuric acid ester (crosslinking coagent), 0.5 part of vinyltriethoxysilane
(thickening coupling agent) and 0.1 part of bis- (2,2,6,6- tetramethyl -4- piperidine alcohols) sebacate (antioxidant).
Above-mentioned heat-conducting type white EVA adhesive film is prepared in accordance with the following methods：
(1) vinyltriethoxysilane for accounting for 40% formula ratio is dissolved in ethyl alcohol, uniform stirring, concentration 2% is made
Thickening coupling agent and ethyl alcohol miscible fluid；
(2) the thickening coupling agent into step (1) and ethyl alcohol miscible fluid addition titanium dioxide and magnesia, ultrasound under room temperature
Disperse 1h, 100 times/min of frequency of oscillation, then solution is dried at 50 DEG C, modified filler is made；
(3) by tert-butyl hydroperoxide carbonic acid -2- ethylhexyls, triisopropyl fulminuric acid ester, remaining vinyl three
Ethoxysilane and bis- (2,2,6,6- tetramethyl -4- piperidine alcohols) sebacates are uniform in 50 DEG C of stirred in water bath, are made mixed
Close auxiliary agent；
(4) first EVA resin is put into batch mixer, then mixed aid obtained by step (3) is added slowly in batch mixer,
Continue to stir 10min, then modified filler obtained by step (2) is added in batch mixer, continues after stirring 20min, premix is made
Object；
(5) pre-composition obtained by step (4) is imported in casting machine, is cast at 80 DEG C, by the glued membrane being cast out through overvoltage
After spending, cooling down, draw, destaticing and winding step, the photovoltaic module heat-conducting type white EVA adhesive film of the present invention is made.
Embodiment 2
The present invention provides a kind of photovoltaic module heat-conducting type white EVA adhesive films, are prepared by the component of following parts by weight
It forms：100 parts of melt index be 40g/10min, VA content be 30% EVA resin, the zinc oxide of 8 parts of 20nm grain sizes it is (reflective
Filler), aluminium oxide (heat filling), the 1 part of tert-butyl hydroperoxide 2- ethylhexyl carbonic ester (organic peroxy of 25 parts of 20nm grain sizes
Compound initiator), 1 part of -2,4,6 (1H, 3H, 5H)-triketone (crosslinking coagent) of tri- -2- acrylic -1,3,5- triazines of 1,3,5-,
0.8 part of (triethoxysilyl) ethylene (thickening coupling agent) and 0.1 part of bis- (2,2,6,6- tetramethyl -4- piperidine alcohols) last of the ten Heavenly stems two
Acid esters (antioxidant).
Above-mentioned heat-conducting type white EVA adhesive film is prepared in accordance with the following methods：
(1) (triethoxysilyl) ethylene for accounting for 40% formula ratio is dissolved in ethyl alcohol, uniform stirring, concentration is made
1% thickening coupling agent and ethyl alcohol miscible fluid；
(2) the thickening coupling agent into step (1) and ethyl alcohol miscible fluid addition zinc oxide and aluminium oxide, ultrasound under room temperature
Disperse 1h, 120 times/min of frequency of oscillation, then solution is dried at 60 DEG C, modified filler is made；
(3) by tert-butyl hydroperoxide 2- ethylhexyls carbonic ester, tri- -2- acrylic -1,3,5- triazines -2,4,6 of 1,3,5-
(1H, 3H, 5H)-triketone, remaining (triethoxysilyl) ethylene and bis- (2,2,6,6- tetramethyl -4- piperidine alcohols) last of the ten Heavenly stems two
Acid esters is uniform in 60 DEG C of stirred in water bath, and mixed aid is made；
(4) first EVA resin is put into batch mixer, then mixed aid obtained by step (3) is added slowly in batch mixer,
Continue to stir 15min, then modified filler obtained by step (2) is added in batch mixer, continues after stirring 20min, premix is made
Object；
(5) pre-composition obtained by step (4) is imported in casting machine, is cast at 85 DEG C, by the glued membrane being cast out through overvoltage
After spending, cooling down, draw, destaticing and winding step, the photovoltaic module heat-conducting type white EVA adhesive film of the present invention is made.
Embodiment 3
The present invention provides a kind of photovoltaic module heat-conducting type white EVA adhesive films, are prepared by the component of following parts by weight
It forms：100 parts of melt index be 60g/10min, VA content be 30% EVA resin, the barium monoxide of 10 parts of 50nm grain sizes it is (reflective
Filler), the zinc oxide (heat filling) of 28 parts of 50nm grain sizes, 1.2 parts of tert-butyl hydroperoxide 2- ethylhexyls carbonic ester (organic mistakes
Oxygen compound initiator), 1.5 parts of triallyl isocyanates (crosslinking coagent), (thickening is even for 1 part of Triethoxyvinylsilane
Join agent) and the double -2,2,6,6- tetramethyl piperidines alcohol esters (antioxidant) of 0.2 part of decanedioic acid.
Above-mentioned heat-conducting type white EVA adhesive film is prepared in accordance with the following methods：
(1) Triethoxyvinylsilane for accounting for 50% formula ratio is dissolved in ethyl alcohol, uniform stirring, concentration 4% is made
Thickening coupling agent and ethyl alcohol miscible fluid；
(2) the thickening coupling agent into step (1) adds barium monoxide and zinc oxide with ethyl alcohol miscible fluid, and ultrasound is divided under room temperature
2h, 150 times/min of frequency of oscillation are dissipated, then solution is dried at 60 DEG C, modified filler is made；
(3) by tert-butyl hydroperoxide 2- ethylhexyls carbonic ester, triallyl isocyanate, remaining triethoxy ethylene
Base silane and double -2,2,6, the 6- tetramethyl piperidine alcohol esters of decanedioic acid are uniform in 70 DEG C of stirred in water bath, and mixed aid is made；
(4) first EVA resin is put into batch mixer, then mixed aid obtained by step (3) is added slowly in batch mixer,
Continue to stir 20min, then modified filler obtained by step (2) is added in batch mixer, continues after stirring 30min, premix is made
Object；
(5) pre-composition obtained by step (4) is imported in casting machine, is cast at 85 DEG C, by the glued membrane being cast out through overvoltage
After spending, cooling down, draw, destaticing and winding step, the photovoltaic module heat-conducting type white EVA adhesive film of the present invention is made.
Comparative example 1
For comparative example 1 with embodiment 1 difference lies in heat filling is lacked, other formulas and preparation method step are identical.
Comparative example 2
For comparative example 1 with embodiment 1 difference lies in reflective filler is lacked, other formulas and preparation method step are identical.
Comparative example 3
Comparative example 1 is with embodiment 1 difference lies in heat filling and reflective filler is lacked, other are formulated and preparation method
Step is identical.
Comparative example 4
For EVA adhesive film common in the art.
Effect assessment and performance detection
According in ASTM E 424-71 standards reflecting rate and ASTM D5470 standards in thermal conductivity, to embodiment 1-3 systems
Heat-conducting type white EVA adhesive film and comparative example 1-4 made from glued membrane and respectively the performance of double glass photovoltaic modulies obtained into
Row contrast test is reference data with comparative example 4.Contrast test result such as the following table 1：
The test result of table 1 embodiment 1-3 and comparative example 1-4
| Reflecting rate (%) | Thermal conductivity (W/mK) | Overall efficiency promotes (%) | |
| Embodiment 1 | 93.1 | 0.61 | 2.1 |
| Embodiment 2 | 93.2 | 0.70 | 2.5 |
| Embodiment 3 | 94.0 | 0.75 | 2.6 |
| Comparative example 1 | 93.0 | 0.28 | 1.0 |
| Comparative example 2 | 10.2 | 0.60 | 0.8 |
| Comparative example 3 | 5.1 | 0.22 | 0 |
| Comparative example 4 | 4.8 | 0.27 | - |
Compared with comparative example 4, the reflecting rate of heat-conducting type white EVA adhesive film made from embodiment 1-3 is more than 93%, thermal conductivity
Reach 0.6~0.8W/mK, is more than one times of the thermal conductivity or more of common 0.2~0.3W/mK of EVA adhesive film, reduces component too
2~4 DEG C of positive electricity pond nominal operating temperature, overall efficiency promote 2% or more.It is compared from comparative example 1-3, reflective filler of the invention
It is matched with heat filling with certain synergistic function, the overall efficiency of photovoltaic module can be improved.
The above embodiment is only the preferred embodiment of the present invention, and the scope of protection of the present invention is not limited thereto,
The variation and replacement for any unsubstantiality that those skilled in the art is done on the basis of the present invention belong to institute of the present invention
Claimed range.
Claims (10)
1. a kind of heat-conducting type white EVA adhesive film applied on photovoltaic module, which is characterized in that by the raw material of following parts by weight
It is prepared：100 parts of EVA resin, filler 6-12 parts reflective, 20-34 parts of heat filling, organic per-compounds initiator 0.8-
0.1-0.6 parts of 2.0 parts, 0.8-2.5 parts of crosslinking coagent, 0.5-2.0 parts of coupling agent of thickening and antioxidant.
2. heat-conducting type white EVA adhesive film as described in claim 1, which is characterized in that the EVA resin contains for vinylacetate
Amount is 28-40%, and melt index is the EVA resin of 20-80g/10min.
3. heat-conducting type white EVA adhesive film as described in claim 1, which is characterized in that the reflective filler is titanium oxide, oxidation
The combination of any one or two kinds in zinc, barium monoxide, grain size 10-500nm.
4. heat-conducting type white EVA adhesive film as described in claim 1, which is characterized in that the heat filling is magnesia, oxidation
The combination of any one or two kinds in aluminium, zinc oxide, grain size 10-100nm.
5. heat-conducting type white EVA adhesive film as described in claim 1, which is characterized in that the organic per-compounds initiator
For tert-butyl hydroperoxide carbonic acid -2- ethylhexyls, tert-butyl hydroperoxide 2- ethylhexyls carbonic ester, t-butylperoxy formic acid 2-
Ethylhexyl ester, carbon peroxy acid-O, O- (1,1- dimethyl ethyls)-O- (2- ethylhexyls) ester, tert-butyl hydroperoxide carbonic acid -2-
The mixture of one or more of ethylhexyl, tert-butyl peroxy carbonic acid -2- ethylhexyls.
6. heat-conducting type white EVA adhesive film as described in claim 1, which is characterized in that the crosslinking coagent is that triisopropyl is different
Cyanurate, Triallyl isocyanurate, iso-cyanuric acid triallyl ester, tri- -2- acrylic -1,3,5- three of 1,3,5-
In piperazine -2,4,6 (1H, 3H, 5H)-triketone, triallyl isocyanate, triallyl isocyanurate, triallyl isocyanurate
One or more kinds of mixtures.
7. heat-conducting type white EVA adhesive film as described in claim 1, which is characterized in that the thickening coupling agent is vinyl three
Ethoxy silane, (triethoxysilyl) ethylene, triethoxy vinyl silane, one kind in Triethoxyvinylsilane or
Two or more mixtures.
8. heat-conducting type white EVA adhesive film as described in claim 1, which is characterized in that the antioxidant is hindered amines light
Stabilizer, selected from bis- (2,2,6,6- tetramethyl -4- piperidine alcohols) sebacates, decanedioic acid double -2,2,6,6- tetramethylpiperidinols
Ester, 2- (2 '-hydroxyls -5 '-aminomethyl phenyl)-benzotriazole.
9. a kind of preparation method applied to the heat-conducting type white EVA adhesive film on photovoltaic module, it is characterised in that including：
The step of dissolving thickening coupling agent：The thickening coupling agent for accounting for 40-60% formula ratios is dissolved in ethyl alcohol, uniform stirring, is made
Obtain the thickening coupling agent and ethyl alcohol miscible fluid that mass concentration is 1-4%；
The step of preparing modified filler：It is filled out to thickening coupling agent and the reflective filler of addition formula ratio and heat conduction in ethyl alcohol miscible fluid
Expect, ultrasonic disperse 1-2h, 100-200 times/min of frequency of oscillation under room temperature, then solution is dried at 50-80 DEG C, is made and is modified
Filler；
The step of preparing mixed aid：By the organic per-compounds initiator of formula ratio, crosslinking coagent, the coupling of remaining thickening
Agent and antioxidant are uniform in 50-70 DEG C of stirred in water bath, and mixed aid is made；
The step of preparing pre-composition：First the EVA resin of formula ratio is put into batch mixer, then gained mixed aid is slowly added
To batch mixer, continue to stir 10-20min, then gained modified filler is added in batch mixer, continues to stir 20-40min
Afterwards, pre-composition is made；
The step of molding：Gained pre-composition is imported in casting machine, is cast at 80-100 DEG C, by the glued membrane being cast out through overvoltage
After spending, cooling down, draw, destaticing and winding step, heat-conducting type white EVA adhesive film is made.
10. the preparation method of heat-conducting type white EVA adhesive film as claimed in claim 9, which is characterized in that the heat-conducting type white
EVA adhesive film is prepared by the raw material of following parts by weight：100 parts of EVA resin, filler 6-12 parts reflective, heat filling 20-34
Part, 0.8-2.0 parts of organic per-compounds initiator, 0.8-2.5 parts of crosslinking coagent, 0.5-2.0 parts of coupling agent of thickening and antioxygen
0.1-0.6 parts of agent.
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| CN112909111A (en) * | 2021-01-18 | 2021-06-04 | 江苏新源太阳能科技有限公司 | Solar cell module and preparation method thereof |
| CN112980353A (en) * | 2021-03-24 | 2021-06-18 | 江苏鹿山新材料有限公司 | Black high-reflection high-thermal-conductivity PID-resistant EVA (ethylene vinyl acetate) packaging adhesive film and preparation method and application thereof |
| CN114891456A (en) * | 2022-06-20 | 2022-08-12 | 江苏科技大学 | anti-PID white heat-conducting adhesive film and preparation method thereof |
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Address after: 213200 2229 Jintan Road, Jintan Economic Development Zone, Changzhou, Jiangsu Applicant after: Jiangsu Lushan New Material Co., Ltd Applicant after: GUANGZHOU LUSHAN NEW MATERIALS Co.,Ltd. Address before: 213200 2229 Jintan Road, Jintan Economic Development Zone, Changzhou, Jiangsu Applicant before: JIANGSU LUSHAN PHOTOELECTRIC TECHNOLOGY Co.,Ltd. Applicant before: GUANGZHOU LUSHAN NEW MATERIALS Co.,Ltd. |
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Application publication date: 20180727 |