CN104409544A - Double-sided epoxy resin solar panels back film and preparation method thereof - Google Patents
Double-sided epoxy resin solar panels back film and preparation method thereof Download PDFInfo
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- CN104409544A CN104409544A CN201410646795.3A CN201410646795A CN104409544A CN 104409544 A CN104409544 A CN 104409544A CN 201410646795 A CN201410646795 A CN 201410646795A CN 104409544 A CN104409544 A CN 104409544A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Abstract
A double-sided epoxy resin solar panels back film and a preparation method thereof, relating to the technical field of solar panels back film. The double-sided epoxy resin solar panels back film includes three layers from top to bottom including a first layer, a second layer and a third layer, and the first layer is a weather resistance layer, the second layer is a PET layer, and the third layer is an adhesive layer. The first layer is connected to the second layer by glue, and the second layer is connected to the third layer through the glue. The thickness of the weather resistance layer is 40-70 Mum, and the weather resistance layer is composed of the following components: epoxy resin, curing agent I, inorganic filler and solvent I; the thickness of the adhesive layer is 30-60 Mum, and the adhesive layer is composed of the following components: epoxy resin, organic silicone resin, curing agent II, silane coupling agent and solvent II. The double-sided epoxy resin solar panels back film has excellent weather resistance and acid and alkali resistance, and can effectively encapsulate solar cells, and prolong the service life. In addition, the back film has lower thickness and the preparation technology is simple, which is favorable to the development of back film technology.
Description
Technical field
The invention belongs to solar energy back film technical field, particularly two-sided epoxy resin back film of solar cell of one and preparation method thereof.
Background technology
Solar module encapsulating material mainly comprises glass, EVA, glued membrane, frame, notacoria, terminal box, silica gel etc.The back seal film that solar cell package is used, generally has five layers of (with three layers) structure, comprises weathering layer, adhesive layer, pet layer or intermediate layer, adhesive layer and adhesive linkage from top to bottom.The main performance of back film of solar cell is encapsulation crystalline silicon; therefore it need reach good air exclusion performance, anti-oxidation and moisture resistant performance; good electrical insulation capability must be had simultaneously, the hydrolysis property etc. of binding can be prevented for a long time, with digital preservation crystalline silicon from the erosion in the external world and guarantee crystalline silicon electricity conversion.
Existing back film of solar cell, for reaching above-mentioned performance, fluorine-contained film is taked to be outer (i.e. weathering layer), or even the adhesive linkage of internal layer, take PET as intermediate layer, effect is ideal, but cost is higher, and China not yet can not produce at present voluntarily, can only depend on import, therefore, the restriction of China's photovoltaic industry is also caused.
Application number is the patent documentation " a kind of poly phosphazene composition, poly phosphazene coating solar-energy battery back film and preparation method thereof " of 201210060924.1, disclose a kind of back film of solar cell, in order to solve solar battery back film complicated process of preparation in prior art, the defect that weatherability is not good, the invention provides a kind of poly phosphazene composition, poly phosphazene coating solar-energy battery back film and preparation method thereof.Described poly phosphazene composition comprises the poly phosphazene material of 55-89 weight portion, the poly phosphazene micro Nano material of 1-15 weight portion, 10-30 parts by weight solvent.Described solar battery back film is three-decker, and intermediate layer is basement membrane, and material is polyester; Two skins are poly phosphazene coating respectively, comprise poly phosphazene material and poly phosphazene micro Nano material.
It can thus be appreciated that this technical scheme is also be intermediate layer with polyester, two-layerly inside and outside it be poly phosphazene coating, to improve the weather resistance of notacoria, but the performance of poly phosphazene coating is not good, its antiacid alkali resistance and stability poor than epoxy resin, therefore, its weatherability and durability unsatisfactory.
Summary of the invention
The technical problem that the present invention solves: for above-mentioned deficiency, overcome the defect of prior art, the object of this invention is to provide a kind of two-sided epoxy resin back film of solar cell and preparation method thereof.
Technical scheme of the present invention: a kind of two-sided epoxy resin back film of solar cell, comprise three-decker from top to bottom, ground floor is weathering layer, the second layer is pet layer, third layer is adhesive linkage, ground floor is connected with the second layer with between the second layer with third layer by gluing, and weathering layer thickness is 40-70 μm, is made up of each component of following mass fraction: epoxy resin 60-75 part, curing agent I 6-12 part, inorganic filler 12-20 part and solvent I 15-25 part;
Thickness of adhibited layer is 30-60 μm, is made up of each component of following mass fraction: epoxy resin 45-60 part, organic siliconresin 10-20 part, curing agent II 6-10 part, silane coupler 4-8 part and solvent II 12-22 part.
As preferably, inorganic filler is white carbon, kaolin or bentonitic at least one.
As preferably, described curing agent I is polyisocyanate curing agent.
As preferably, described curing agent II is polyamide curing agent.
As preferably, described solvent I is acetone, butanone or toluene.
As preferably, described solvent II is acetone, toluene or dimethylbenzene.
As preferably, weathering layer is made up of each component of following mass fraction: epoxy resin 65-70 part, curing agent I 8-12 part, inorganic filler 15-18 part and solvent I 18-25 part.
As preferably, adhesive linkage is made up of each component of following mass fraction: epoxy resin 50-58 part, organic siliconresin 12-18 part, curing agent II 8-10 part, silane coupler 5-7 part and solvent II 15-20 part.
A preparation method for two-sided epoxy resin back film of solar cell, preparation process is as follows:
(1) prepare weathering layer: epoxy resin and inorganic filler are added in solvent I, ultrasonic agitation is even, then adds curing agent I, constantly stirs, after mixing, pour mould into, hot-forming, thickness 40-70 μm;
(2) prepare tack coat: epoxy resin and organic siliconresin are joined in solution II, after stirring, add curing agent II and silane coupler, after mixing, pour mould into, hot-forming, thickness 30-60 μm;
(3) weathering layer, pet layer and adhesive linkage to be joined lamination by viscose glue, obtain laminar films structural material;
(4) above-mentioned laminar films structural material is carried out vacuum to cold pressing, prepare two-sided epoxy resin back film of solar cell.
Beneficial effect: two-sided epoxy resin back film of solar cell provided by the invention, take PET as intermediate layer basis material, two-layer all epoxy resin layer is set inside and outside, utilize epoxy resin good film-forming performance and excellent acid-proof alkaline, the composite membrane notacoria obtained has ideal weatherability and resistance to acids and bases, can significantly improve the useful life of notacoria.
Therefore, two-sided epoxy resin back film of solar cell provided by the invention, has excellent weatherability and resistance to acids and bases, effectively can encapsulate solar cell, extend its useful life, and notacoria thickness is lower, preparation technology is comparatively simple, for notacoria technology development advantageously.
Embodiment
In order to understand the present invention further, below in conjunction with embodiment, the preferred embodiment of the invention is described, but should be appreciated that these describe just for further illustrating the features and advantages of the present invention, instead of limiting to the claimed invention.
Embodiment 1:
A kind of two-sided epoxy resin back film of solar cell, comprise three-decker from top to bottom, ground floor is weathering layer, and the second layer is pet layer, and third layer is adhesive linkage, and ground floor is connected with the second layer with between the second layer with third layer by gluing,
Weathering layer is made up of each component of following mass fraction: epoxy resin 60 parts, polyisocyanate curing agent 6 parts, white carbon 12 parts and 15 parts, acetone;
Thickness of adhibited layer is made up of each component of following mass fraction: epoxy resin 45 parts, organic siliconresin 10 parts, polyamide curing agent 6 parts, silane coupler 4 parts and toluene 12 parts.
Prepare two-sided epoxy resin back film of solar cell according to preparation method provided by the invention, step is as follows:
(1) prepare weathering layer: add in acetone by epoxy resin and inorganic filler, ultrasonic agitation is even, then adds polyisocyanate curing agent, constantly stirs, after mixing, pour mould into, hot-forming, thickness 40 μm;
(2) prepare tack coat: join in toluene by epoxy resin and organic siliconresin, after stirring, add polyamide curing agent and silane coupler, after mixing, pour mould into, hot-forming, thickness 30 μm;
(3) weathering layer, pet layer and adhesive linkage to be joined lamination by viscose glue, obtain laminar films structural material;
(4) above-mentioned laminar films structural material is carried out vacuum to cold pressing, prepare two-sided epoxy resin back film of solar cell.
Embodiment 2:
A kind of two-sided epoxy resin back film of solar cell, comprise three-decker from top to bottom, ground floor is weathering layer, and the second layer is pet layer, and third layer is adhesive linkage, and ground floor is connected with the second layer with between the second layer with third layer by gluing,
Weathering layer is made up of each component of following mass fraction: epoxy resin 75 parts, polyisocyanate curing agent 12 parts, white carbon 12-20 part and butanone I 15-25 part;
Thickness of adhibited layer is made up of each component of following mass fraction: epoxy resin 60 parts, organic siliconresin 20 parts, polyamide curing agent 10 parts, silane coupler 8 parts and dimethylbenzene 22 parts.
Prepare two-sided epoxy resin back film of solar cell according to preparation method provided by the invention, step is as follows:
(1) prepare weathering layer: add in butanone by epoxy resin and inorganic filler, ultrasonic agitation is even, then adds polyisocyanate curing agent, constantly stirs, after mixing, pour mould into, hot-forming, thickness 70 μm;
(2) prepare tack coat: join in dimethylbenzene by epoxy resin and organic siliconresin, after stirring, add polyamide curing agent and silane coupler, after mixing, pour mould into, hot-forming, thickness 60 μm;
(3) weathering layer, pet layer and adhesive linkage to be joined lamination by viscose glue, obtain laminar films structural material;
(4) above-mentioned laminar films structural material is carried out vacuum to cold pressing, prepare two-sided epoxy resin back film of solar cell.
Embodiment 3:
A kind of two-sided epoxy resin back film of solar cell, comprise three-decker from top to bottom, ground floor is weathering layer, and the second layer is pet layer, and third layer is adhesive linkage, and ground floor is connected with the second layer with between the second layer with third layer by gluing,
Weathering layer is made up of each component of following mass fraction: epoxy resin 65 parts, polyisocyanate curing agent 6 parts, bentonite 15 parts and toluene 18 parts;
Thickness of adhibited layer is made up of each component of following mass fraction: epoxy resin 50 parts, organic siliconresin 12 parts, polyamide curing agent 6 parts, silane coupler 5 parts and dimethylbenzene 15 parts.
Prepare two-sided epoxy resin back film of solar cell according to preparation method provided by the invention, step is as follows:
(1) prepare weathering layer: add in toluene by epoxy resin and inorganic filler, ultrasonic agitation is even, then adds polyisocyanate curing agent, constantly stirs, after mixing, pour mould into, hot-forming, thickness 50 μm;
(2) prepare tack coat: join in dimethylbenzene by epoxy resin and organic siliconresin, after stirring, add polyamide curing agent and silane coupler, after mixing, pour mould into, hot-forming, thickness 40 μm;
(3) weathering layer, pet layer and adhesive linkage to be joined lamination by viscose glue, obtain laminar films structural material;
(4) above-mentioned laminar films structural material is carried out vacuum to cold pressing, prepare two-sided epoxy resin back film of solar cell.
Embodiment 4:
A kind of two-sided epoxy resin back film of solar cell, comprise three-decker from top to bottom, ground floor is weathering layer, and the second layer is pet layer, and third layer is adhesive linkage, and ground floor is connected with the second layer with between the second layer with third layer by gluing,
Weathering layer is made up of each component of following mass fraction: epoxy resin 70 parts, polyisocyanate curing agent 12 parts, bentonite 18 parts and 25 parts, acetone;
Thickness of adhibited layer is made up of each component of following mass fraction: epoxy resin 58 parts, organic siliconresin 18 parts, polyamide curing agent 10 parts, silane coupler 7 parts and 20 parts, acetone.
Prepare two-sided epoxy resin back film of solar cell according to preparation method provided by the invention, step is as follows:
(1) prepare weathering layer: add in acetone by epoxy resin and inorganic filler, ultrasonic agitation is even, then adds polyisocyanate curing agent, constantly stirs, after mixing, pour mould into, hot-forming, thickness 60 μm;
(2) prepare tack coat: join in acetone by epoxy resin and organic siliconresin, after stirring, add polyamide curing agent and silane coupler, after mixing, pour mould into, hot-forming, thickness 50 μm;
(3) weathering layer, pet layer and adhesive linkage to be joined lamination by viscose glue, obtain laminar films structural material;
(4) above-mentioned laminar films structural material is carried out vacuum to cold pressing, prepare two-sided epoxy resin back film of solar cell.
Embodiment 5:
A kind of two-sided epoxy resin back film of solar cell, comprise three-decker from top to bottom, ground floor is weathering layer, and the second layer is pet layer, and third layer is adhesive linkage, and ground floor is connected with the second layer with between the second layer with third layer by gluing,
Weathering layer is made up of each component of following mass fraction: epoxy resin 68 parts, polyisocyanate curing agent 9 parts, white carbon 16 parts and 20 parts, acetone;
Thickness of adhibited layer is made up of each component of following mass fraction: epoxy resin 55 parts, organic siliconresin 15 parts, polyamide curing agent 9 parts, silane coupler 6 parts and 18 parts, acetone.
Prepare two-sided epoxy resin back film of solar cell according to preparation method provided by the invention, step is as follows:
(1) prepare weathering layer: add in acetone by epoxy resin and inorganic filler, ultrasonic agitation is even, then adds polyisocyanate curing agent, constantly stirs, after mixing, pour mould into, hot-forming, thickness 55 μm;
(2) prepare tack coat: join in acetone by epoxy resin and organic siliconresin, after stirring, add polyamide curing agent and silane coupler, after mixing, pour mould into, hot-forming, thickness 45 μm;
(3) weathering layer, pet layer and adhesive linkage to be joined lamination by viscose glue, obtain laminar films structural material;
(4) above-mentioned laminar films structural material is carried out vacuum to cold pressing, prepare two-sided epoxy resin back film of solar cell.
Application number be 201210060924.1 the disclosed technical scheme of patent documentation " a kind of poly phosphazene composition, poly phosphazene coating solar-energy battery back film and preparation method thereof " prepare solar battery back film, be control group; Measure the performance of above-mentioned embodiment and control group notacoria.
(1) two eight or five ageing tests
Carry out two eight or five ageing tests to embodiment 1-5 and control group, result is as shown in table 1:
The weatherability test of the two-sided epoxy resin back film of solar cell of table 1
| Project | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Control group |
| Two eight or five aging/h | ≥2000 | ≥2000 | ≥2000 | ≥2000 | ≥2000 | ≥1600 |
As seen from the above table, two eight or five senile experiments of embodiment 1-5 are all more than 2000h, and control group is more than 1600h, and therefore, the excellent weather resistance and hard of embodiment 1-5 is in control group.
(2) resistance to acids and bases
Measure the resistance to acids and bases of embodiment 1-5 and control group, result is as shown in table 2:
The resistance to acids and bases test of the two-sided epoxy resin back film of solar cell of table 2
As seen from the above table, the resistance to acids and bases of embodiment 1-5 is better, and control group alkali resistance is poor.
In sum, two-sided epoxy resin back film of solar cell provided by the invention has excellent weather resistance and resistance to acids and bases.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (9)
1. a two-sided epoxy resin back film of solar cell, comprise three-decker from top to bottom, ground floor is weathering layer, the second layer is pet layer, third layer is adhesive linkage, ground floor is connected with the second layer with between the second layer with third layer by gluing, it is characterized in that: weathering layer thickness is 40-70 μm, is made up of each component of following mass fraction: epoxy resin 60-75 part, curing agent I 6-12 part, inorganic filler 12-20 part and solvent I 15-25 part;
Thickness of adhibited layer is 30-60 μm, is made up of each component of following mass fraction: epoxy resin 45-60 part, organic siliconresin 10-20 part, curing agent II 6-10 part, silane coupler 4-8 part and solvent II 12-22 part.
2. two-sided epoxy resin back film of solar cell according to claim 1, is characterized in that: inorganic filler is white carbon, kaolin or bentonitic at least one.
3. two-sided epoxy resin back film of solar cell according to claim 1, is characterized in that: described curing agent I is polyisocyanate curing agent.
4. two-sided epoxy resin back film of solar cell according to claim 1, is characterized in that: described curing agent II is polyamide curing agent.
5. two-sided epoxy resin back film of solar cell according to claim 1, is characterized in that: described solvent I is acetone, butanone or toluene.
6. two-sided epoxy resin back film of solar cell according to claim 1, is characterized in that: described solvent II is acetone, toluene or dimethylbenzene.
7. two-sided epoxy resin back film of solar cell according to claim 1, it is characterized in that, weathering layer is made up of each component of following mass fraction: epoxy resin 65-70 part, curing agent I 8-12 part, inorganic filler 15-18 part and solvent I 18-25 part.
8. two-sided epoxy resin back film of solar cell according to claim 1, it is characterized in that, adhesive linkage is made up of each component of following mass fraction: epoxy resin 50-58 part, organic siliconresin 12-18 part, curing agent II 8-10 part, silane coupler 5-7 part and solvent II 15-20 part.
9. a preparation method for two-sided epoxy resin back film of solar cell according to claim 1, it is characterized in that, preparation process is as follows:
(1) prepare weathering layer: epoxy resin and inorganic filler are added in solvent I, ultrasonic agitation is even, then adds curing agent I, constantly stirs, after mixing, pour mould into, hot-forming, thickness 40-70 μm;
(2) prepare tack coat: epoxy resin and organic siliconresin are joined in solution II, after stirring, add curing agent II and silane coupler, after mixing, pour mould into, hot-forming, thickness 30-60 μm;
(3) weathering layer, pet layer and adhesive linkage to be joined lamination by viscose glue, obtain laminar films structural material;
(4) above-mentioned laminar films structural material is carried out vacuum to cold pressing, prepare two-sided epoxy resin back film of solar cell.
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| CN201410646795.3A CN104409544B (en) | 2014-11-14 | 2014-11-14 | A kind of two-sided epoxy resin back film of solar cell and preparation method thereof |
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Cited By (3)
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| CN105679865A (en) * | 2016-01-28 | 2016-06-15 | 苏州佳亿达电器有限公司 | Anti-aging back film used for solar photovoltaic panel |
| CN109585605A (en) * | 2018-12-03 | 2019-04-05 | 江苏中宇光伏科技有限公司 | A kind of preparation method of back film of solar cell |
| CN116987476A (en) * | 2023-08-09 | 2023-11-03 | 惠州市帕克威乐新材料有限公司 | Cold-pressed fast-curing adhesive film and preparation method thereof |
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| CN102516852A (en) * | 2011-12-16 | 2012-06-27 | 新高电子材料（中山）有限公司 | Weather-resistant and high thermal conductive coating, radiating solar rear panel and efficient solar cell panel |
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| CN102315285A (en) * | 2011-09-06 | 2012-01-11 | 新高电子材料（中山）有限公司 | Weather-resistant coating and solar back plate using same |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105679865A (en) * | 2016-01-28 | 2016-06-15 | 苏州佳亿达电器有限公司 | Anti-aging back film used for solar photovoltaic panel |
| CN109585605A (en) * | 2018-12-03 | 2019-04-05 | 江苏中宇光伏科技有限公司 | A kind of preparation method of back film of solar cell |
| CN116987476A (en) * | 2023-08-09 | 2023-11-03 | 惠州市帕克威乐新材料有限公司 | Cold-pressed fast-curing adhesive film and preparation method thereof |
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