CN101820034A - Production process of solar cell back film and device thereof - Google Patents
Production process of solar cell back film and device thereof Download PDFInfo
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- CN101820034A CN101820034A CN201010161587A CN201010161587A CN101820034A CN 101820034 A CN101820034 A CN 101820034A CN 201010161587 A CN201010161587 A CN 201010161587A CN 201010161587 A CN201010161587 A CN 201010161587A CN 101820034 A CN101820034 A CN 101820034A
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Abstract
The invention relates to the solar cell technical field, in particular to a production process of a solar cell back film and a device thereof, which solve the technical problems of the prior art such as complicated operation, difficult implementation, low product quality and the like. The production process comprises: A. polymerizing; B. film forming; and C. obtaining the finished product. The production device for the solar cell back film comprises a mixing device, a film-forming device, an extension device and a shaping device which are connected together sequentially. Compared with the prior art, the production process of the solar cell back film and the device thereof have the following advantages: 1. easy implementation, lower production cost and high product quality; 2. reasonable design, simple structure, convenient operation and use, and high degree of automation; and 3. good transparency, high glossiness and uniform thickness of the obtained thin film, thus achieving convenient temperature control and effectively improving the product quality.
Description
Technical field
The present invention relates to technical field of solar batteries, especially relate to a kind of production process of solar cell back film and device thereof.
Background technology
People utilize demand more and more urgent to solar energy source, and solar cell is also more and more paid attention to by people as a kind of carrier that can effectively utilize solar energy.At present, solar battery back film but ubiquity electric property, obstruct and weather resisteant can not high situation, use after 5～10 years, the part assembly promptly can occur beating bad phenomenon such as arc, foaming, delamination, EVA xanthochromia, has had a strong impact on the serviceability and the working life of battery component.Solar components will be positioned over outdoor for a long time, stand to expose to the sun and rain, the test of hot and humid and cryogenic freezing, also has the erosion of various harmful vapour-liquid bodies.In case material damage, solar components has also been scrapped thereupon.Therefore material determines useful life, and the prolongation in useful life has also just directly reduced the use cost of solar components generating.Therefore, promote the technical performance of solar battery back film,, have crucial meaning for the quick benign development of photovoltaic industry for the durability and the reliability that improve solar module.
Polyvinyl fluoride (PVF) is a kind of thermoplastic resin, can be used for making solar battery back film.For this reason, people have carried out long-term exploration, have proposed various solutions.For example, Chinese patent literature discloses a kind of solar array back film production method and equipment [application number: CN200810121271.7].This method comprise unreel, preliminary treatment, coating, oven dry, arrangement, lining form rolling and drying steps; Wherein baking step is finished on drying tunnel, in rolling liner not mucous membrane in case adhesion.Present device comprises unwinding device, pretreatment unit, plater, drying tunnel, collating unit, wrap-up and drying device, and wherein to be set to initial segment and subsequent segment and subsequent segment be reciprocation type to drying tunnel, to shorten the length of casing, improves the heat efficiency.
Though such scheme has improved the performance of solar battery back film to a certain extent, it is not high still to exist properties of product, and complex process is difficult to meet and uses technical problems such as required.On the other hand, the equipment that is used to process solar battery back film also exists complex structure, problems such as cost height.
Summary of the invention
The objective of the invention is at the problems referred to above, provide a kind of easy to implement, production cost is lower, the production process of solar cell back film that product quality is high.
It is a kind of reasonable in design, simple in structure that another object of the present invention provides, the solar battery back film process units of stable and reliable product quality.
For achieving the above object, the present invention has adopted following technical proposal: this production process of solar cell back film is characterized in that this production technology comprises:
A, polymerization: being medium with water in reactor, is initator with the azo-bis-isobutyrate hydrochloride, charges into fluorine-containing vinyl monomer then, make white emulsion, and being settled out polymer with saturated brine, washing, drying then obtain to contain the white powder of polyfluoroethylene resin;
B, film forming: get polyfluoroethylene resin and cosolvent, through the closely knit big micelle of wetting formation, closely knit big micelle through disperseing to be ground into micelle, is formed gel then after mixing, gel is formed film by extruding, and film is carried out adding thermal finalization after the biaxial tension;
C, finished product: the film after will finalizing the design obtains solar battery back film through reprocessing.
In above-mentioned production process of solar cell back film, in the described steps A, pressure should be between 2.5-15MPa, and temperature is controlled at about 55-65 ℃, and constantly replenish fluorine-containing vinyl monomer and keep polymerization pressure, through about 10-20 hour, get the polyfluoroethylene resin white emulsion.
In above-mentioned production process of solar cell back film, among the described step B, described cosolvent comprises Bu Dingnei cruel 135 and N, N one dimethyl methyl phthalein amine.
In above-mentioned production process of solar cell back film, among the described step B, described micelle heats in mixing process, and leaves standstill after mixing slaking a period of time, fully enters between the big molecule of matrix until cosolvent.
In above-mentioned production process of solar cell back film, among the described step B, the temperature during biaxial tension is 100 ℃-180 ℃.
In above-mentioned production process of solar cell back film, described reprocessing comprises gluing, oven dry,, rolling bonding with PET, solidifies and cuts.
In above-mentioned production process of solar cell back film, among the described step B, the quality percentage composition that forms cosolvent in the film through extruding is not less than 26%.
A kind of solar battery back film process units is characterized in that, this device comprises mixing device, film formation device, stretching device and the calibrator that links successively and be provided with.
In above-mentioned solar battery back film process units, described mixing device comprises pedestal, is provided with rabbling mechanism on pedestal, and described rabbling mechanism and driving mechanism link, and is provided with heating arrangements on rabbling mechanism; Described film formation device comprises material storing box, is provided with extrusion mechanism on material storing box, and a side of described extrusion mechanism is provided with cooling body.
In above-mentioned solar battery back film process units, described stretching device comprises longitudinal stretching mechanism and the cross directional stretch mechanism that sets gradually, described longitudinal stretching mechanism comprises the longitudinal stretching casing, in the longitudinal stretching casing, be provided with some longitudinal stretching roll shafts with different rotating speeds, described cross directional stretch mechanism comprises the cross directional stretch casing, is provided with the cross directional stretch roll shaft that some length increase gradually in the cross directional stretch casing; Described calibrator comprises casing, is provided with Sheng Re mechanism in casing, also is provided with some roll shafts that be arranged in parallel in casing, is provided with haulage gear at the sidepiece of roll shaft.
Compared with prior art, the advantage of this production process of solar cell back film and device thereof is: 1, easy to implement, production cost is lower, the product quality height.2, reasonable in design, simple in structure, easy for operation, the automaticity height.The film transparency of 3, being produced is good, the glossiness height, and thickness is even, can control temperature easily, effectively improves product quality.
Description of drawings
Fig. 1 is a structured flowchart provided by the invention.
Fig. 2 is a structural representation provided by the invention.
Among the figure, mixing device 1, film formation device 2, material storing box 21, extrusion mechanism 22, cooling body 23, stretching device 3, longitudinal stretching mechanism 31, longitudinal stretching casing 311, longitudinal stretching roll shaft 312, cross directional stretch mechanism 32, cross directional stretch casing 321, cross directional stretch roll shaft 322, calibrator 4, casing 41, roll shaft 42, haulage gear 43.
Embodiment
Production process of solar cell back film, technology comprises:
A, polymerization: being medium with water in reactor, is initator with the azo-bis-isobutyrate hydrochloride, charges into fluorine-containing vinyl monomer then, make white emulsion, and being settled out polymer with saturated brine, washing, drying then obtain to contain the white powder of polyfluoroethylene resin;
B, film forming: get polyfluoroethylene resin and cosolvent, through the closely knit big micelle of wetting formation, closely knit big micelle through disperseing to be ground into micelle, is formed gel then after mixing, gel is formed film by extruding, and film is carried out adding thermal finalization after the biaxial tension; Temperature during biaxial tension is 100 ℃-180 ℃.
C, finished product: the film after will finalizing the design obtains solar battery back film through reprocessing.Reprocessing comprises gluing, oven dry,, rolling bonding with PET, solidifies and cuts.
In the steps A, pressure should be between 2.5-15MPa, and temperature is controlled at about 55-65 ℃, and constantly replenishes fluorine-containing vinyl monomer and keep polymerization pressure, gets the polyfluoroethylene resin white emulsion through about 10-20 hour.
Among the step B, cosolvent comprises Bu Dingnei cruel 135 and N, N one dimethyl methyl phthalein amine.Among the step B, micelle heats in mixing process, and leaves standstill after mixing slaking a period of time, fully enters between the big molecule of matrix until cosolvent.Among the step B, the quality percentage composition that forms cosolvent in the film through extruding is not less than 26%.
As shown in Figure 1, the production line that originally is used to produce solar battery back film comprises mixing device 1, film formation device 2, stretching device 3 and the calibrator 4 that links successively and be provided with.Can produce high-quality solar battery back film easily by said apparatus.
As shown in Figure 2, mixing device 1 comprises pedestal 11, is provided with rabbling mechanism on pedestal.Rabbling mechanism and driving mechanism link, and are provided with heating arrangements on rabbling mechanism.Film formation device 2 comprises material storing box 21, is provided with extrusion mechanism 22 on material storing box 21, and a side of extrusion mechanism 22 is provided with cooling body 23.Stretching device 3 comprises longitudinal stretching mechanism 31 and the cross directional stretch mechanism 32 that sets gradually.Longitudinal stretching mechanism 31 comprises longitudinal stretching casing 311, is provided with some longitudinal stretching roll shafts 312 with different rotating speeds in longitudinal stretching casing 311.Cross directional stretch mechanism 32 comprises cross directional stretch casing 321, is provided with the cross directional stretch roll shaft 322 that some length increase gradually in cross directional stretch casing 321.Calibrator 4 comprises casing 41, is provided with Sheng Re mechanism in casing 41, also is provided with some roll shafts that be arranged in parallel 42 in casing 41, is provided with haulage gear 43 at the sidepiece of roll shaft 42.
Specific embodiment described herein only is that the present invention's spirit is illustrated.The technical staff of the technical field of the invention can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although this paper has used terms such as mixing device 1, film formation device 2, material storing box 21, extrusion mechanism 22, cooling body 23, stretching device 3, longitudinal stretching mechanism 31, longitudinal stretching casing 311, longitudinal stretching roll shaft 312, cross directional stretch mechanism 32, cross directional stretch casing 321, cross directional stretch roll shaft 322, calibrator 4, casing 41, roll shaft 42, haulage gear 43 morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present invention more easily; They are construed to any additional restriction all is contrary with spirit of the present invention.
Claims (10)
1. production process of solar cell back film is characterized in that this production technology comprises:
A, polymerization: being medium with water in reactor, is initator with the azo-bis-isobutyrate hydrochloride, charges into fluorine-containing vinyl monomer then, make white emulsion, and being settled out polymer with saturated brine, washing, drying then obtain to contain the white powder of polyfluoroethylene resin;
B, film forming: get polyfluoroethylene resin and cosolvent, through the closely knit big micelle of wetting formation, closely knit big micelle through disperseing to be ground into micelle, is formed gel then after mixing, gel is formed film by extruding, and film is carried out adding thermal finalization after the biaxial tension;
C, finished product: the film after will finalizing the design obtains solar battery back film through reprocessing.
2. production process of solar cell back film according to claim 1, it is characterized in that, in the described steps A, pressure should be between 2.5-15MPa, temperature is controlled at about 55-65 ℃, and constantly replenish fluorine-containing vinyl monomer and keep polymerization pressure, through about 10-20 hour, get the polyfluoroethylene resin white emulsion.
3. production process of solar cell back film according to claim 1 is characterized in that, among the described step B, described cosolvent comprises Bu Dingnei cruel 135 and N, N one dimethyl methyl phthalein amine.
4. production process of solar cell back film according to claim 1, it is characterized in that among the described step B, described micelle heats in mixing process, and after mixing, leave standstill slaking a period of time, fully enter between the big molecule of matrix until cosolvent.
5. production process of solar cell back film according to claim 1 is characterized in that, among the described step B, the temperature during biaxial tension is 100 ℃-180 ℃.
6. according to any described production process of solar cell back film among the claim 1-5, it is characterized in that described reprocessing comprises gluing, oven dry,, rolling bonding with PET, solidifies and cuts.
7. production process of solar cell back film according to claim 6 is characterized in that, among the described step B, the quality percentage composition that forms cosolvent in the film through extruding is not less than 26%.
8. a solar battery back film process units is characterized in that, this device comprises mixing device (1), film formation device (2), stretching device (3) and the calibrator (4) that links successively and be provided with.
9. solar battery back film process units according to claim 8, it is characterized in that described mixing device (1) comprises pedestal, is provided with rabbling mechanism on pedestal, described rabbling mechanism and driving mechanism link, and are provided with heating arrangements on rabbling mechanism; Described film formation device (2) comprises material storing box (21), is provided with extrusion mechanism (22) on material storing box (21), and a side of described extrusion mechanism (22) is provided with cooling body (23).
10. solar battery back film process units according to claim 8, it is characterized in that, described stretching device (3) comprises longitudinal stretching mechanism (31) and the cross directional stretch mechanism (32) that sets gradually, described longitudinal stretching mechanism (31) comprises longitudinal stretching casing (311), in longitudinal stretching casing (311), be provided with some longitudinal stretching roll shafts (312) with different rotating speeds, described cross directional stretch mechanism (32) comprises cross directional stretch casing (321), is provided with the cross directional stretch roll shaft (322) that some length increase gradually in cross directional stretch casing (321); Described calibrator (4) comprises casing (41), is provided with Sheng Re mechanism in casing (41), also is provided with some roll shafts that be arranged in parallel (42) in casing (41), is provided with haulage gear (43) at the sidepiece of roll shaft (42).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010161587A CN101820034A (en) | 2010-04-30 | 2010-04-30 | Production process of solar cell back film and device thereof |
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| CN201010161587A CN101820034A (en) | 2010-04-30 | 2010-04-30 | Production process of solar cell back film and device thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102593255A (en) * | 2012-02-29 | 2012-07-18 | 苏州中澳光伏材料科技有限公司 | Solar cell back film production method and production line thereof |
| CN103242660A (en) * | 2013-05-27 | 2013-08-14 | 刘江萍 | Preparation method of high-dielectric film |
| CN103862687A (en) * | 2014-03-26 | 2014-06-18 | 青岛顺德塑料机械有限公司 | Device and method for producing solar backplane back films |
| CN106700350A (en) * | 2015-11-13 | 2017-05-24 | 浙江蓝天环保高科技股份有限公司 | Preparation method for polyvinyl fluoride film with good weatherability |
| CN109734941A (en) * | 2018-11-20 | 2019-05-10 | 常州回天新材料有限公司 | The preparation method of anti-aging solar battery back film |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1834124A (en) * | 2006-04-17 | 2006-09-20 | 浙江蓝天环保高科技股份有限公司 | Prepn. of PVF |
| CN101370572A (en) * | 2006-01-11 | 2009-02-18 | 东洋纺织株式会社 | Polyvinylidene fluoride hollow yarn type microporous film and process for production of the same |
| CN101649024A (en) * | 2009-08-19 | 2010-02-17 | 中国海洋石油总公司 | Preparation method of water-in-water cationic polyacylamide emulsion |
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2010
- 2010-04-30 CN CN201010161587A patent/CN101820034A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101370572A (en) * | 2006-01-11 | 2009-02-18 | 东洋纺织株式会社 | Polyvinylidene fluoride hollow yarn type microporous film and process for production of the same |
| CN1834124A (en) * | 2006-04-17 | 2006-09-20 | 浙江蓝天环保高科技股份有限公司 | Prepn. of PVF |
| CN101649024A (en) * | 2009-08-19 | 2010-02-17 | 中国海洋石油总公司 | Preparation method of water-in-water cationic polyacylamide emulsion |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102593255A (en) * | 2012-02-29 | 2012-07-18 | 苏州中澳光伏材料科技有限公司 | Solar cell back film production method and production line thereof |
| CN103242660A (en) * | 2013-05-27 | 2013-08-14 | 刘江萍 | Preparation method of high-dielectric film |
| CN103242660B (en) * | 2013-05-27 | 2015-12-23 | 刘江萍 | A kind of method preparing high dielectric thin film |
| CN103862687A (en) * | 2014-03-26 | 2014-06-18 | 青岛顺德塑料机械有限公司 | Device and method for producing solar backplane back films |
| CN103862687B (en) * | 2014-03-26 | 2016-12-07 | 青岛顺德塑料机械有限公司 | A kind of solar energy backboard notacoria produces Apparatus and method for |
| CN106700350A (en) * | 2015-11-13 | 2017-05-24 | 浙江蓝天环保高科技股份有限公司 | Preparation method for polyvinyl fluoride film with good weatherability |
| CN109734941A (en) * | 2018-11-20 | 2019-05-10 | 常州回天新材料有限公司 | The preparation method of anti-aging solar battery back film |
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Application publication date: 20100901 |