CN104479271B - A kind of solar cell backboard thin film and preparation method thereof - Google Patents
A kind of solar cell backboard thin film and preparation method thereof Download PDFInfo
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- CN104479271B CN104479271B CN201410847201.5A CN201410847201A CN104479271B CN 104479271 B CN104479271 B CN 104479271B CN 201410847201 A CN201410847201 A CN 201410847201A CN 104479271 B CN104479271 B CN 104479271B
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Abstract
The present invention relates to technical field of solar batteries, it is specifically related to a kind of solar cell backboard thin film and preparation method thereof, the surface configuration of described thin film has concavo-convex fenestral fabric, the thickness of thin film is 15 150 μm, and thin film includes the raw material of following weight portion: acrylate 40 80 parts, fluororesin 20 60 parts, Nano filling 10 30 parts, heat filling 5 15 parts, cross-linking agent 15 parts, coupling agent 15 parts, ultraviolet (UV) resistant agent 0.5 1.5 parts, 0.5 1.5 parts of antioxidant.The adhesive force of the present invention is good, and hardness is high, is difficult to scratch, and heat conductivity is good, strong with EVA adhesion, and aging resistance is difficult to delamination.
Description
Technical field
The present invention relates to technical field of solar batteries, be specifically related to a kind of solar cell backboard thin film and preparation method thereof.
Background technology
Solaode is low ferrum safety glass, silicon chip, EVA glue and the laminated preparation of notacoria.Owing to solaode is directly exposed in air, being vulnerable to the erosion of steam, sour gas, high/low temperature and ultraviolet etc., cause its photoelectric conversion performance degradation, therefore the protective effect of solar cell backboard film is critically important, and research is the most highly significant.
The coating adhesion of existing solar cell backboard thin film is poor, and coating hardness is low, easily scratches during use, and heat conductivility is poor, little with EVA adhesion, aging easy delamination.
Summary of the invention
In order to overcome shortcoming and defect present in prior art, it is an object of the invention to provide a kind of solar cell backboard thin film, this adhesive force is good, and hardness is high, is difficult to scratch, and heat conductivity is good, strong with EVA adhesion, and aging resistance is difficult to delamination.
It is an object of the invention to provide the preparation method of a kind of solar cell backboard thin film, this preparation method technique is simple, convenient operation and control, steady quality, and production efficiency is high, can large-scale industrial production.
The purpose of the present invention is achieved through the following technical solutions: a kind of solar cell backboard thin film, and the surface configuration of described thin film has concavo-convex fenestral fabric, and the thickness of thin film is 15-150 μm, and thin film includes the raw material of following weight portion:
Acrylate
40-80 part
Fluororesin
20-60 part
Nano filling
10-30 part
Heat filling
5-15 part
Cross-linking agent 1-5 part
Coupling agent 1-5 part
Ultraviolet (UV) resistant agent
0.5-1.5 part
Antioxidant 0.5-1.5 part；
Described acrylate includes the raw material of following weight portion: methacrylic acid 1-5 part, acrylate 1-5 part, methacrylate 20-30 part, methacrylic acid hydroxyl ester 10-20 part, styrene 5-10 part, initiator 1-5 part and solvent 40-60 part.
Preferably, the mixture that described acrylate is made up of with weight ratio 2-3:1.5-2.5:1 acrylic acid methyl ester., ethyl acrylate and acrylic acid-2-ethyl caproite；The mixture that described methacrylate is made up of with weight ratio 1.6-2.4:1:0.8-1.2 methyl methacrylate, isopropyl methacrylate and cyclohexyl methacrylate；The mixture that methacrylic acid hydroxyl ester is made up of with weight ratio 1.4-2.2:1 hydroxyethyl methylacrylate and Hydroxypropyl methacrylate；The mixture that described initiator is made up of with weight ratio 2.5-4.5:1.5-2.5:1 azodiisobutyronitrile, dibenzoyl peroxide and dilauroyl peroxide, the mixture that described solvent is made up of with weight ratio 1.8-2.6:1 butyl acetate and methyl iso-butyl ketone (MIBK).
Preferably, the mixture that described fluororesin is made up of with weight ratio 1:1.8-2.6:3-4 politef, Kynoar and ethylene-tetrafluoroethylene copolymer.
Preferably, the mixture that described Nano filling is made up of with weight ratio 1:0.8-1.2 nano silicon and nano titanium oxide.
Preferably, the mixture that described heat filling is made up of with weight ratio 2-3:1.5-2.5:1 nano aluminum nitride, nm-class boron nitride and nanometer silicon carbide.
Preferably, the mixture that described cross-linking agent is made up of with weight ratio 8-10:1 crosslinking and curing agent and assistant crosslinking agent；The mixture that described crosslinking and curing agent is made up of with weight ratio 1:0.8-1.2 organic peroxide and azo-compound.
The present invention uses as crosslinker compounding by using crosslinking and curing agent and assistant crosslinking agent, and to control its weight ratio be 8-10:1, organic peroxide and azo-compound is used to use as crosslinking and curing agent is compounding further, and to control its weight ratio be 1:0.8-1.2 so that the intensity of EVA adhesive film and good springiness.
Described organic peroxide is by di-isopropylbenzene hydroperoxide, the peroxidating-2-ethylhexyl carbonate tert-butyl ester and 3, the mixture that 3-bis-(t-butyl peroxy) ethyl n-butyrate. forms with weight ratio 1.8-2.6:0.8-1.2:1.
The present invention is by using di-isopropylbenzene hydroperoxide, the peroxidating-2-ethylhexyl carbonate tert-butyl ester and 3,3-bis-(t-butyl peroxy) ethyl n-butyrate. uses as organic peroxide is compounding, and to control its weight ratio be 1.8-2.6:0.8-1.2:1 so that the intensity of EVA adhesive film and good springiness.The azo-compound that the present invention uses is azo-compound commonly used in the art, azo-compound i.e. AZO, the compound that azo group-N=N-is connected with two alkyl and generates, general formula R-N=N-R '.
The mixture that described assistant crosslinking agent is made up of with weight ratio 1:1.4-2.2 triallyl cyanurate and diethyleneglycol dimethacrylate.
The present invention is by using triallyl cyanurate and diethyleneglycol dimethacrylate to use as assistant crosslinking agent is compounding, and to control its weight ratio be 1:1.4-2.2 so that the intensity of EVA adhesive film and good springiness.
Preferably, the mixture that described coupling agent is made up of with weight ratio 1.4-2.2:1:2-3 vinyltriacetoxy silane, vinyl three tert-butyl peroxide silane and vinyl three ('beta '-methoxy ethyoxyl) silane.
The present invention uses as coupling agent is compounding by using vinyltriacetoxy silane, vinyl three tert-butyl peroxide silane and vinyl three ('beta '-methoxy ethyoxyl) silane, and to control its weight ratio be 1.4-2.2:1:2-3, the viscosity of molten synthetic resin can be reduced, improve the dispersion of filler to improve processing characteristics, and then make goods obtain good surface quality and machinery, heat and electrical property.
Preferably, described ultraviolet (UV) resistant agent is the mixture being made up of with weight ratio 1:1.8-2.6 4-benzoyloxy-2,2,6,6-tetramethyl piperidines and Octabenzone.
The present invention is by using 4-benzoyloxy-2, and 2,6,6-tetramethyl piperidines and Octabenzone use as ultraviolet (UV) resistant agent is compounding, and the thin film uvioresistant prepared is effective, substantially increases goods service life in exposure air.
Preferably, the mixture that described antioxidant is made up of with weight ratio 1:1-2 antioxidant 1010 and irgasfos 168.
The present invention uses as antioxidant is compounding by using antioxidant 1010 and irgasfos 168, and to control its weight ratio be 1:1-2, two kinds of antioxidant are environmental protection antioxidant and have certain synergism, can delay or suppress the carrying out of material oxidation process, thus stop the aging of material and extend its service life.
Another object of the present invention is achieved through the following technical solutions: the preparation method of a kind of solar cell backboard thin film, comprises the steps:
(1) first by above-mentioned raw materials through batch mixer mix homogeneously, obtain mixture；
(2) putting in casting machine by step (1) gained mixture, at 100-180 DEG C through plasticizing extrusion, through having steel rider and the rubber rollers calendering of concaveconvex structure, prepared thickness is the thin film that 15-150 μm and surface configuration have concavo-convex fenestral fabric.
The beneficial effects of the present invention is: the thin film of the present invention is by using acrylate to be modified fluororesin processing, and uses cross-linking agent and coupling agent to overcome the compatibility of two kinds of resins, and adhesive force is good, is amenable to hot and humid adverse circumstances.
The thin film of the present invention, by using Nano filling, is obviously improved coating hardness, and product is in use difficult to be scratched or cut occur.
The thin film of the present invention is by using heat filling, and heat conductivity is good, by backboard heat conductivity from 0.2 W/m DEG C bring up to 0.5 W/m DEG C, thus reduce solar module running temperature, improve assembly operating power.
The thin film of the present invention, by the concavo-convex fenestral fabric of its surface configuration, increases specific surface area, thus forms mechanical tong lock with coating when silica gel or EVA adhesive film solidification, significantly improve external cohesive force, strong with EVA adhesion, and aging resistance is difficult to delamination.
The thin film water vapor transmittance of the present invention is ＜ 1g/m2D, OTR oxygen transmission rate ＜ 0.5cm3/m2•24h•atm。
The preparation method technique of the present invention is simple, convenient operation and control, steady quality, and production efficiency is high, can large-scale industrial production.
Detailed description of the invention
For the ease of the understanding of those skilled in the art, below in conjunction with embodiment, the present invention is further illustrated, the content that embodiment is mentioned not limitation of the invention.
Embodiment 1
A kind of solar cell backboard thin film, the surface configuration of described thin film has concavo-convex fenestral fabric, and the thickness of thin film is 15 μm, and thin film includes the raw material of following weight portion:
Acrylate
40 parts
Fluororesin 20 parts
Nano filling
10 parts
Heat filling
5-15 part
Cross-linking agent 1 part
Coupling agent 1 part
Ultraviolet (UV) resistant agent
0.5 part
0.5 part of antioxidant；
Described acrylate includes the raw material of following weight portion: methacrylic acid 1 part, acrylate 1 part, methacrylate 20 parts, methacrylic acid hydroxyl ester 10 parts, styrene 5-10 part, initiator 1 part and solvent 40 parts.
The mixture that described acrylate is made up of with weight ratio 2:1.5:1 acrylic acid methyl ester., ethyl acrylate and acrylic acid-2-ethyl caproite；The mixture that described methacrylate is made up of with weight ratio 1.6:1:0.8 methyl methacrylate, isopropyl methacrylate and cyclohexyl methacrylate；The mixture that methacrylic acid hydroxyl ester is made up of with weight ratio 1.4:1 hydroxyethyl methylacrylate and Hydroxypropyl methacrylate；The mixture that described initiator is made up of with weight ratio 2.5:1.5:1 azodiisobutyronitrile, dibenzoyl peroxide and dilauroyl peroxide, the mixture that described solvent is made up of with weight ratio 1.8:1 butyl acetate and methyl iso-butyl ketone (MIBK).
The mixture that described fluororesin is made up of with weight ratio 1:1.8:3 politef, Kynoar and ethylene-tetrafluoroethylene copolymer.
The mixture that described Nano filling is made up of with weight ratio 1:0.8 nano silicon and nano titanium oxide.
The mixture that described heat filling is made up of with weight ratio 2:1.5:1 nano aluminum nitride, nm-class boron nitride and nanometer silicon carbide.
The mixture that described cross-linking agent is made up of with weight ratio 8:1 crosslinking and curing agent and assistant crosslinking agent；The mixture that described crosslinking and curing agent is made up of with weight ratio 1:0.8 organic peroxide and azo-compound；Described organic peroxide is by di-isopropylbenzene hydroperoxide, the peroxidating-2-ethylhexyl carbonate tert-butyl ester and 3, the mixture that 3-bis-(t-butyl peroxy) ethyl n-butyrate. forms with weight ratio 1.8:0.8:1；The mixture that described assistant crosslinking agent is made up of with weight ratio 1:1.4 triallyl cyanurate and diethyleneglycol dimethacrylate.
The mixture that described coupling agent is made up of with weight ratio 1.4:1:2 vinyltriacetoxy silane, vinyl three tert-butyl peroxide silane and vinyl three ('beta '-methoxy ethyoxyl) silane.
Described ultraviolet (UV) resistant agent is the mixture being made up of with weight ratio 1:1.8 4-benzoyloxy-2,2,6,6-tetramethyl piperidines and Octabenzone.
The mixture that described antioxidant is made up of with weight ratio 1:1 antioxidant 1010 and irgasfos 168.
The preparation method of a kind of solar cell backboard thin film, comprises the steps:
(1) first by above-mentioned raw materials through batch mixer mix homogeneously, obtain mixture；
(2) putting in casting machine by step (1) gained mixture, at 100 DEG C through plasticizing extrusion, through having steel rider and the rubber rollers calendering of concaveconvex structure, prepared thickness is the thin film that 15 μm and surface configuration have concavo-convex fenestral fabric.
Embodiment 2
A kind of solar cell backboard thin film, the surface configuration of described thin film has concavo-convex fenestral fabric, and the thickness of thin film is 45 μm, and thin film includes the raw material of following weight portion:
Acrylate
50 parts
Fluororesin 30 parts
Nano filling
15 parts
Heat filling
7 parts
Cross-linking agent 2 parts
Coupling agent 2 parts
Ultraviolet (UV) resistant agent
0.7 part
0.7 part of antioxidant；
Described acrylate includes the raw material of following weight portion: methacrylic acid 2 parts, acrylate 2 parts, methacrylate 22 parts, methacrylic acid hydroxyl ester 12 parts, styrene 6 parts, initiator 2 parts and solvent 45 parts.
The mixture that described acrylate is made up of with weight ratio 2.2:1.7:1 acrylic acid methyl ester., ethyl acrylate and acrylic acid-2-ethyl caproite；The mixture that described methacrylate is made up of with weight ratio 1.8:1:0.9 methyl methacrylate, isopropyl methacrylate and cyclohexyl methacrylate；The mixture that methacrylic acid hydroxyl ester is made up of with weight ratio 1.6:1 hydroxyethyl methylacrylate and Hydroxypropyl methacrylate；The mixture that described initiator is made up of with weight ratio 3:1.7:1 azodiisobutyronitrile, dibenzoyl peroxide and dilauroyl peroxide, the mixture that described solvent is made up of with weight ratio 2:1 butyl acetate and methyl iso-butyl ketone (MIBK).
The mixture that described fluororesin is made up of with weight ratio 1:2:3.2 politef, Kynoar and ethylene-tetrafluoroethylene copolymer.
The mixture that described Nano filling is made up of with weight ratio 1:0.9 nano silicon and nano titanium oxide.
The mixture that described heat filling is made up of with weight ratio 2.2:1.7:1 nano aluminum nitride, nm-class boron nitride and nanometer silicon carbide.
The mixture that described cross-linking agent is made up of with weight ratio 8.5:1 crosslinking and curing agent and assistant crosslinking agent；The mixture that described crosslinking and curing agent is made up of with weight ratio 1:0.9 organic peroxide and azo-compound；Described organic peroxide is by di-isopropylbenzene hydroperoxide, the peroxidating-2-ethylhexyl carbonate tert-butyl ester and 3, the mixture that 3-bis-(t-butyl peroxy) ethyl n-butyrate. forms with weight ratio 2:0.9:1；The mixture that described assistant crosslinking agent is made up of with weight ratio 1:1.6 triallyl cyanurate and diethyleneglycol dimethacrylate.
The mixture that described coupling agent is made up of with weight ratio 1.6:1:2.2 vinyltriacetoxy silane, vinyl three tert-butyl peroxide silane and vinyl three ('beta '-methoxy ethyoxyl) silane.
Described ultraviolet (UV) resistant agent is the mixture being made up of with weight ratio 1:2 4-benzoyloxy-2,2,6,6-tetramethyl piperidines and Octabenzone.
The mixture that described antioxidant is made up of with weight ratio 1:1.2 antioxidant 1010 and irgasfos 168.
The preparation method of a kind of solar cell backboard thin film, comprises the steps:
(1) first by above-mentioned raw materials through batch mixer mix homogeneously, obtain mixture；
(2) putting in casting machine by step (1) gained mixture, at 120 DEG C through plasticizing extrusion, through having steel rider and the rubber rollers calendering of concaveconvex structure, prepared thickness is the thin film that 45 μm and surface configuration have concavo-convex fenestral fabric.
Embodiment 3
A kind of solar cell backboard thin film, the surface configuration of described thin film has concavo-convex fenestral fabric, and the thickness of thin film is 75 μm, and thin film includes the raw material of following weight portion:
Acrylate
60 parts
Fluororesin 40 part
Nano filling
20 parts
Heat filling
7 parts
Cross-linking agent 3 parts
Coupling agent 3 parts
Ultraviolet (UV) resistant agent
1 part
1 part of antioxidant；
Described acrylate includes the raw material of following weight portion: methacrylic acid 3 parts, acrylate 3 parts, methacrylate 25 parts, methacrylic acid hydroxyl ester 15 parts, styrene 7 parts, initiator 3 parts and solvent 50 parts.
The mixture that described acrylate is made up of with weight ratio 2.5:2:1 acrylic acid methyl ester., ethyl acrylate and acrylic acid-2-ethyl caproite；The mixture that described methacrylate is made up of with weight ratio 2:1:1 methyl methacrylate, isopropyl methacrylate and cyclohexyl methacrylate；The mixture that methacrylic acid hydroxyl ester is made up of with weight ratio 1.8:1 hydroxyethyl methylacrylate and Hydroxypropyl methacrylate；The mixture that described initiator is made up of with weight ratio 3.5:2:1 azodiisobutyronitrile, dibenzoyl peroxide and dilauroyl peroxide, the mixture that described solvent is made up of with weight ratio 2.2:1 butyl acetate and methyl iso-butyl ketone (MIBK).
The mixture that described fluororesin is made up of with weight ratio 1:2.2:3.5 politef, Kynoar and ethylene-tetrafluoroethylene copolymer.
The mixture that described Nano filling is made up of with weight ratio 1:1 nano silicon and nano titanium oxide.
The mixture that described heat filling is made up of with weight ratio 2.5:2:1 nano aluminum nitride, nm-class boron nitride and nanometer silicon carbide.
The mixture that described cross-linking agent is made up of with weight ratio 9:1 crosslinking and curing agent and assistant crosslinking agent；The mixture that described crosslinking and curing agent is made up of with weight ratio 1:1 organic peroxide and azo-compound；Described organic peroxide is by di-isopropylbenzene hydroperoxide, the peroxidating-2-ethylhexyl carbonate tert-butyl ester and 3, the mixture that 3-bis-(t-butyl peroxy) ethyl n-butyrate. forms with weight ratio 2.2:1:1；The mixture that described assistant crosslinking agent is made up of with weight ratio 1:1.8 triallyl cyanurate and diethyleneglycol dimethacrylate.
The mixture that described coupling agent is made up of with weight ratio 1.8:1:2.5 vinyltriacetoxy silane, vinyl three tert-butyl peroxide silane and vinyl three ('beta '-methoxy ethyoxyl) silane.
Described ultraviolet (UV) resistant agent is the mixture being made up of with weight ratio 1:2.2 4-benzoyloxy-2,2,6,6-tetramethyl piperidines and Octabenzone.
The mixture that described antioxidant is made up of with weight ratio 1:1.5 antioxidant 1010 and irgasfos 168.
The preparation method of a kind of solar cell backboard thin film, comprises the steps:
(1) first by above-mentioned raw materials through batch mixer mix homogeneously, obtain mixture；
(2) putting in casting machine by step (1) gained mixture, at 140 DEG C through plasticizing extrusion, through having steel rider and the rubber rollers calendering of concaveconvex structure, prepared thickness is the thin film that 75 μm and surface configuration have concavo-convex fenestral fabric.
Embodiment 4
A kind of solar cell backboard thin film, the surface configuration of described thin film has concavo-convex fenestral fabric, and the thickness of thin film is 110 μm, and thin film includes the raw material of following weight portion:
Acrylate
70 parts
Fluororesin 50 parts
Nano filling
25 parts
Heat filling
12 parts
Cross-linking agent 4 parts
Coupling agent 4 parts
Ultraviolet (UV) resistant agent
1.2 part
1.2 parts of antioxidant；
Described acrylate includes the raw material of following weight portion: methacrylic acid 4 parts, acrylate 4 parts, methacrylate 28 parts, methacrylic acid hydroxyl ester 18 parts, styrene 8 parts, initiator 4 parts and solvent 55 parts.
The mixture that described acrylate is made up of with weight ratio 2.8:2.2:1 acrylic acid methyl ester., ethyl acrylate and acrylic acid-2-ethyl caproite；The mixture that described methacrylate is made up of with weight ratio 2.2:1:1.1 methyl methacrylate, isopropyl methacrylate and cyclohexyl methacrylate；The mixture that methacrylic acid hydroxyl ester is made up of with weight ratio 2:1 hydroxyethyl methylacrylate and Hydroxypropyl methacrylate；The mixture that described initiator is made up of with weight ratio 4:2.2:1 azodiisobutyronitrile, dibenzoyl peroxide and dilauroyl peroxide, the mixture that described solvent is made up of with weight ratio 2.4:1 butyl acetate and methyl iso-butyl ketone (MIBK).
The mixture that described fluororesin is made up of with weight ratio 1:2.4:3.8 politef, Kynoar and ethylene-tetrafluoroethylene copolymer.
The mixture that described Nano filling is made up of with weight ratio 1:1.1 nano silicon and nano titanium oxide.
The mixture that described heat filling is made up of with weight ratio 2.8:2.2:1 nano aluminum nitride, nm-class boron nitride and nanometer silicon carbide.
The mixture that described cross-linking agent is made up of with weight ratio 9.5:1 crosslinking and curing agent and assistant crosslinking agent；The mixture that described crosslinking and curing agent is made up of with weight ratio 1:1.1 organic peroxide and azo-compound；Described organic peroxide is by di-isopropylbenzene hydroperoxide, the peroxidating-2-ethylhexyl carbonate tert-butyl ester and 3, the mixture that 3-bis-(t-butyl peroxy) ethyl n-butyrate. forms with weight ratio 2.4:1.1:1；The mixture that described assistant crosslinking agent is made up of with weight ratio 1:2 triallyl cyanurate and diethyleneglycol dimethacrylate.
The mixture that described coupling agent is made up of with weight ratio 2:1:2.8 vinyltriacetoxy silane, vinyl three tert-butyl peroxide silane and vinyl three ('beta '-methoxy ethyoxyl) silane.
Described ultraviolet (UV) resistant agent is the mixture being made up of with weight ratio 1:2.4 4-benzoyloxy-2,2,6,6-tetramethyl piperidines and Octabenzone.
The mixture that described antioxidant is made up of with weight ratio 1:1.8 antioxidant 1010 and irgasfos 168.
The preparation method of a kind of solar cell backboard thin film, comprises the steps:
(1) first by above-mentioned raw materials through batch mixer mix homogeneously, obtain mixture；
(2) putting in casting machine by step (1) gained mixture, at 160 DEG C through plasticizing extrusion, through having steel rider and the rubber rollers calendering of concaveconvex structure, prepared thickness is the thin film that 110 μm and surface configuration have concavo-convex fenestral fabric.
Embodiment 5
A kind of solar cell backboard thin film, the surface configuration of described thin film has concavo-convex fenestral fabric, and the thickness of thin film is 150 μm, and thin film includes the raw material of following weight portion:
Acrylate
80 parts
Fluororesin 60 parts
Nano filling
30 parts
Heat filling
15 parts
Cross-linking agent 5 parts
Coupling agent 5 parts
Ultraviolet (UV) resistant agent
1.5 part
1.5 parts of antioxidant；
Described acrylate includes the raw material of following weight portion: methacrylic acid 5 parts, acrylate 5 parts, methacrylate 30 parts, methacrylic acid hydroxyl ester 20 parts, styrene 10 parts, initiator 5 parts and solvent 60 parts.
The mixture that described acrylate is made up of with weight ratio 3:2.5:1 acrylic acid methyl ester., ethyl acrylate and acrylic acid-2-ethyl caproite；The mixture that described methacrylate is made up of with weight ratio 2.4:1:1.2 methyl methacrylate, isopropyl methacrylate and cyclohexyl methacrylate；The mixture that methacrylic acid hydroxyl ester is made up of with weight ratio 2.2:1 hydroxyethyl methylacrylate and Hydroxypropyl methacrylate；The mixture that described initiator is made up of with weight ratio 4.5:2.5:1 azodiisobutyronitrile, dibenzoyl peroxide and dilauroyl peroxide, the mixture that described solvent is made up of with weight ratio 2.6:1 butyl acetate and methyl iso-butyl ketone (MIBK).
The mixture that described fluororesin is made up of with weight ratio 1:2.6:4 politef, Kynoar and ethylene-tetrafluoroethylene copolymer.
The mixture that described Nano filling is made up of with weight ratio 1:1.2 nano silicon and nano titanium oxide.
The mixture that described heat filling is made up of with weight ratio 3:2.5:1 nano aluminum nitride, nm-class boron nitride and nanometer silicon carbide.
The mixture that described cross-linking agent is made up of with weight ratio 10:1 crosslinking and curing agent and assistant crosslinking agent；The mixture that described crosslinking and curing agent is made up of with weight ratio 1:1.2 organic peroxide and azo-compound；Described organic peroxide is by di-isopropylbenzene hydroperoxide, the peroxidating-2-ethylhexyl carbonate tert-butyl ester and 3, the mixture that 3-bis-(t-butyl peroxy) ethyl n-butyrate. forms with weight ratio 2.6:1.2:1；The mixture that described assistant crosslinking agent is made up of with weight ratio 1:2.2 triallyl cyanurate and diethyleneglycol dimethacrylate.
The mixture that described coupling agent is made up of with weight ratio 2.2:1:3 vinyltriacetoxy silane, vinyl three tert-butyl peroxide silane and vinyl three ('beta '-methoxy ethyoxyl) silane.
Described ultraviolet (UV) resistant agent is the mixture being made up of with weight ratio 1:2.6 4-benzoyloxy-2,2,6,6-tetramethyl piperidines and Octabenzone.
The mixture that described antioxidant is made up of with weight ratio 1:2 antioxidant 1010 and irgasfos 168.
The preparation method of a kind of solar cell backboard thin film, comprises the steps:
(1) first by above-mentioned raw materials through batch mixer mix homogeneously, obtain mixture；
(2) putting in casting machine by step (1) gained mixture, at 180 DEG C through plasticizing extrusion, through having steel rider and the rubber rollers calendering of concaveconvex structure, prepared thickness is the thin film that 150 μm and surface configuration have concavo-convex fenestral fabric.
The thin film of the present invention is by using acrylate to be modified fluororesin processing, and uses cross-linking agent and coupling agent to overcome the compatibility of two kinds of resins, and adhesive force is good, is amenable to hot and humid adverse circumstances.The thin film of the present invention, by using Nano filling, is obviously improved coating hardness, and product is in use difficult to be scratched or cut occur.The thin film of the present invention is by using heat filling, and heat conductivity is good, by backboard heat conductivity from 0.2
W/m DEG C brings up to 0.5 W/m DEG C, thus reduces solar module running temperature, improves assembly operating power.The thin film of the present invention, by the concavo-convex fenestral fabric of its surface configuration, increases specific surface area, thus forms mechanical tong lock with coating when silica gel or EVA adhesive film solidification, significantly improve external cohesive force, strong with EVA adhesion, and aging resistance is difficult to delamination.The thin film water vapor transmittance of the present invention is ＜ 1g/m2D, OTR oxygen transmission rate ＜ 0.5cm3/m2•24h•atm。
Above-described embodiment is the present invention preferably implementation, and in addition, the present invention can realize with alternate manner, and the most any obvious replacement is all within protection scope of the present invention.
Claims (9)
1. a solar cell backboard thin film, it is characterised in that: the surface configuration of described thin film has concavo-convex fenestral fabric, and the thickness of thin film is 15-150 μm, and thin film includes the raw material of following weight portion:
Acrylate 40-80 part
Fluororesin
20-60 part
Nano filling
10-30 part
Heat filling
5-15 part
Cross-linking agent
1-5 part
Coupling agent
1-5 part
Ultraviolet (UV) resistant agent 0.5-1.5 part
Antioxidant
0.5-1.5 part；
Described acrylate includes the raw material of following weight portion: methacrylic acid 1-5 part, acrylate 1-5 part, methacrylate 20-30 part, methacrylic acid hydroxyl ester 10-20 part, styrene 5-10 part, initiator 1-5 part and solvent 40-60 part；
The mixture that described fluororesin is made up of with weight ratio 1:1.8-2.6:3-4 politef, Kynoar and ethylene-tetrafluoroethylene copolymer.
A kind of solar cell backboard thin film the most according to claim 1, it is characterised in that: the mixture that described acrylate is made up of with weight ratio 2-3:1.5-2.5:1 acrylic acid methyl ester., ethyl acrylate and acrylic acid-2-ethyl caproite；The mixture that described methacrylate is made up of with weight ratio 1.6-2.4:1:0.8-1.2 methyl methacrylate, isopropyl methacrylate and cyclohexyl methacrylate；The mixture that methacrylic acid hydroxyl ester is made up of with weight ratio 1.4-2.2:1 hydroxyethyl methylacrylate and Hydroxypropyl methacrylate；The mixture that described initiator is made up of with weight ratio 2.5-4.5:1.5-2.5:1 azodiisobutyronitrile, dibenzoyl peroxide and dilauroyl peroxide, the mixture that described solvent is made up of with weight ratio 1.8-2.6:1 butyl acetate and methyl iso-butyl ketone (MIBK).
A kind of solar cell backboard thin film the most according to claim 1, it is characterised in that: the mixture that described Nano filling is made up of with weight ratio 1:0.8-1.2 nano silicon and nano titanium oxide.
A kind of solar cell backboard thin film the most according to claim 1, it is characterised in that: the mixture that described heat filling is made up of with weight ratio 2-3:1.5-2.5:1 nano aluminum nitride, nm-class boron nitride and nanometer silicon carbide.
A kind of solar cell backboard thin film the most according to claim 1, it is characterised in that: the mixture that described cross-linking agent is made up of with weight ratio 8-10:1 crosslinking and curing agent and assistant crosslinking agent；The mixture that described crosslinking and curing agent is made up of with weight ratio 1:0.8-1.2 organic peroxide and azo-compound；Described organic peroxide is by di-isopropylbenzene hydroperoxide, the peroxidating-2-ethylhexyl carbonate tert-butyl ester and 3, the mixture that 3-bis-(t-butyl peroxy) ethyl n-butyrate. forms with weight ratio 1.8-2.6:0.8-1.2:1；The mixture that described assistant crosslinking agent is made up of with weight ratio 1:1.4-2.2 triallyl cyanurate and diethyleneglycol dimethacrylate.
A kind of solar cell backboard thin film the most according to claim 1, it is characterised in that: the mixture that described coupling agent is made up of with weight ratio 1.4-2.2:1:2-3 vinyltriacetoxy silane, vinyl three tert-butyl peroxide silane and vinyl three ('beta '-methoxy ethyoxyl) silane.
A kind of solar cell backboard thin film the most according to claim 1, it is characterized in that: described ultraviolet (UV) resistant agent is by 4-benzoyloxy-2, the mixture that 2,6,6-tetramethyl piperidines and Octabenzone form with weight ratio 1:1.8-2.6.
A kind of solar cell backboard thin film the most according to claim 1, it is characterised in that: the mixture that described antioxidant is made up of with weight ratio 1:1-2 antioxidant 1010 and irgasfos 168.
The preparation method of a kind of solar cell backboard thin film the most according to claim 1, it is characterised in that: comprise the steps:
(1) first by above-mentioned raw materials through batch mixer mix homogeneously, obtain mixture；
(2) putting in casting machine by step (1) gained mixture, at 100-180 DEG C through plasticizing extrusion, through having steel rider and the rubber rollers calendering of concaveconvex structure, prepared thickness is the thin film that 15-150 μm and surface configuration have concavo-convex fenestral fabric.
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| CN107195717B (en) * | 2017-05-15 | 2018-12-18 | 句容协鑫集成科技有限公司 | Solar cell backboard |
| CN108102304A (en) * | 2017-11-22 | 2018-06-01 | 纳琳威纳米科技南通有限公司 | A kind of preparation method and its usage of step biaxial tension insulation high heat conduction film |
| CN108102305A (en) * | 2017-11-22 | 2018-06-01 | 纳琳威纳米科技南通有限公司 | A kind of preparation method and its usage for the high heat conduction plastics that insulate |
| CN108084669A (en) * | 2017-11-22 | 2018-05-29 | 纳琳威纳米科技南通有限公司 | A kind of preparation method and its usage for the high heat conduction plastic pellet that insulate |
| CN108084613A (en) * | 2017-12-28 | 2018-05-29 | 安徽荣泽科技有限公司 | Excellent polyacrylate modified polyvinylidene difluoride film of a kind of uvioresistant performance and preparation method thereof |
| CN108659332A (en) * | 2018-06-19 | 2018-10-16 | 佛山腾鲤新能源科技有限公司 | A kind of preparation method of high temperature resistant packaging adhesive film for solar cell |
| CN109705444A (en) * | 2018-12-19 | 2019-05-03 | 上海同晋环保科技有限公司 | A kind of polyfluoro compounding ETFE film and decorative panel |
| CN112961611B (en) * | 2020-12-23 | 2023-02-03 | 烟台德邦科技股份有限公司 | Acrylate structural adhesive with high thermal conductivity, high reliability and rapid curing |
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| WO2013069493A1 (en) * | 2011-11-10 | 2013-05-16 | 電気化学工業株式会社 | Fluorine-containing resin film and solar cell module |
| CN103492478A (en) * | 2011-04-28 | 2014-01-01 | 电气化学工业株式会社 | Vinylidene fluoride-based resin film, solar cell back sheet, and solar cell module |
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| CN103492478A (en) * | 2011-04-28 | 2014-01-01 | 电气化学工业株式会社 | Vinylidene fluoride-based resin film, solar cell back sheet, and solar cell module |
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