CN103346184B - A kind of EVA film and preparation method thereof - Google Patents
A kind of EVA film and preparation method thereof Download PDFInfo
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- CN103346184B CN103346184B CN201310294936.5A CN201310294936A CN103346184B CN 103346184 B CN103346184 B CN 103346184B CN 201310294936 A CN201310294936 A CN 201310294936A CN 103346184 B CN103346184 B CN 103346184B
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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
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Extrusion Moulding Of Plastics Or The Like (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
The invention discloses a kind of EVA film; especially a kind of EVA film for photovoltaic module back-protective and preparation method thereof; by mixing of materials evenly, dry, extrude, curtain coating, sizing, cooling, corona, cut, rolling; through concavo-convex steel rod and rubber rollers calendering when shaping; wherein steel roller faces has accurate concaveconvex structure, therefore makes EVA film have concaveconvex structure.Preparation technology of the present invention is simple, and operability and practicality are obviously better, and beneficial effect is that EVA film surface is in concavo-convex latticed, increases specific area, thus with form mechanical tong during EVA adhesive film package curing and lock, significantly improve cohesive force.
Description
Technical field
The present invention relates to a kind of EVA film, particularly a kind of EVA film for photovoltaic module back-protective and preparation method thereof.
Background technology
Solar energy backboard generally has three-decker, intermediate base sheet material layers and inside and outside weathering layer, described intermediate layer and weathering layer are composited by adhesive, outer weathering layer needs to have good environment resistant erosiveness, intermediate layer needs high pressure resistant insulation, and internal layer weathering layer need have the adhesive property good with EVA packaging plastic.
Now disclose a kind of solar energy backboard to be made up of PVDF/PET/EVA three-decker, have good environment resistant erosiveness and insulation property, the adhesive property between wherein EVA film/EVA packaging plastic still has necessity of lifting.
Summary of the invention
For the deficiencies in the prior art, the object of the invention is to, provide one to have excellent close-burning EVA film and preparation method thereof.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of EVA film, is characterized in that: described EVA film has concavo-convex network.
Aforesaid a kind of EVA film, is characterized in that: described EVA film one side has concavo-convex network.
Aforesaid a kind of EVA film, is characterized in that: described EVA film one side has concavo-convex network, and another side is light face.
Aforesaid a kind of EVA film, is characterized in that: the surface configuration of described concavo-convex network is polygon, and described polygon is the one in triangle, rectangle, rhombus, pentagon, hexagon, octagon, decagon, dodecagon.
Aforesaid a kind of EVA film, is characterized in that: the surface configuration of described concavo-convex network is preferably rectangle.
Aforesaid a kind of EVA film, is characterized in that: the density of described concavo-convex network is 2-6 lattice/10mm
2.
Aforesaid a kind of EVA film, is characterized in that: the cross sectional shape of described concavo-convex network is rectangle or trapezoidal.
Aforesaid a kind of EVA film, is characterized in that: the recess depths of described concavo-convex network is 1-30 μm.
Aforesaid a kind of EVA film, is characterized in that: the recess depths of described concavo-convex network is 5-15 μm.
Aforesaid a kind of EVA film, is characterized in that: the roughness in described EVA film light face is less than 3 μm.
Aforesaid a kind of EVA film, is characterized in that: the roughness in described EVA film light face is less than 1 μm.
Prepare a method for EVA film, it is characterized in that, step of preparation process is as follows:
A. batch mixing: matrix resin is mixed with functional additive, described matrix resin is formed with the 75-90%EVA mixed with resin accounting for matrix resin quality by the 10-25%PE resin accounting for matrix resin quality, and described functional additive is by the TiO of the 0.1-1% UV absorbers or UV light stabilizing agent, 0.1-0.5% antioxidant and 5-10% that account for matrix resin quality
2composition;
B. dry: by the above-mentioned material mixed in vacuum drying oven 80 DEG C of dry 2h;
C. curtain coating is extruded: adopt screw extruder to melt extrude, and through T-shaped mouth mould curtain coating;
D. shape: by casting films through having steel rider and the rubber rollers calendering of accurate concaveconvex structure, form concavo-convex latticed EVA film;
E. cool: by EVA film, by the interior deflector roll cooling being provided with recirculated cooling water;
F. corona: by the light face of EVA film through corona treatment, changes the surface tension of EVA film, to improve cohesive force.
A kind of aforesaid method preparing EVA film, is characterized in that, in described step C, when melt extruding, barrel temperature is 180-240 DEG C, and T-shaped die head temperature is 210-230 DEG C.
A kind of aforesaid method preparing EVA film, is characterized in that, in described step e, cooling water temperature is 5 DEG C.
A kind of aforesaid method preparing EVA film, is characterized in that, in described step F, the voltage that corona treatment adopts is 1.8-2.4KV.
The invention has the beneficial effects as follows: make EVA film surface in concavo-convex latticed by calendering sizing, increase specific area, thus with form mechanical tong during EVA packaging adhesive film package curing and lock, significantly improve both cohesive forces, there is bond widely adaptability and cohesive force designability simultaneously, different demand can be met.
Accompanying drawing explanation
Fig. 1 is the cross sectional shape of male and fomale(M&F) of the present invention is the structural representation of rectangle;
Fig. 2 is the cross sectional shape of male and fomale(M&F) of the present invention is trapezoidal structural representation;
Fig. 3 is the structural representation of the EVA film being shiny surface for upper surface in comparative example and lower surface.
Embodiment
For disclosing technical scheme of the present invention further, describe embodiments of the present invention in detail below in conjunction with accompanying drawing:
Embodiment 1
By the TiO of 25kgPE, 75kgEVA, 0.4kg UV absorbers, 0.5kg antioxidant and 7kg
2mix, in vacuum drying oven 80 DEG C of dry 2h, the melt extruder through T-slot is extruded, and when melt extruding, barrel temperature is 180-240 DEG C, and T-shaped die head temperature is 210-230 DEG C.Casting films is entered the faying face of accurate concavo-convex steel rider and rubber rollers, be attached on concavo-convex steel rider, under the pressuring action of rubber rollers, be forced out uniform concavo-convex network on the surface of EVA film, in then passing through, be provided with the deflector roll cooling of circulation 5 DEG C of cooling waters.By the light face of EVA film through corona treatment, change the surface tension of EVA film, to improve cohesive force, make EVA film.
As shown in Figure 1, a kind of EVA film, one side is concavo-convex network 1, and the surface configuration of concavo-convex network 1 is rectangle, and cross sectional shape is rectangle, and the degree of depth of recess is 5 μm, and the density of concavo-convex network 1 is 6 lattice/10mm
2; Another side is light face 2, and the roughness in light face 2 is 1 μm, makes PVDF/PET/EVA (TPE) solar energy backboard, and with EVA packaging adhesive film 145 DEG C/15min cure package, recording with EVA adhesive film cohesive force is 80N/cm(25 DEG C).
Embodiment 2
By the TiO of 10kgPE, 90kgEVA, 0.4kg UV absorbers, 0.5kg antioxidant and 7kg
2mix, in vacuum drying oven 80 DEG C of dry 2h, the melt extruder through T-slot is extruded, and when melt extruding, barrel temperature is 180-240 DEG C, and T-shaped die head temperature is 210-230 DEG C.Casting films is entered the faying face of accurate concavo-convex steel rider and rubber rollers, be attached on concavo-convex steel rider, under the pressuring action of rubber rollers, be forced out uniform concavo-convex network on the surface of EVA film, in then passing through, be provided with the deflector roll cooling of circulation 5 DEG C of cooling waters.By the light face of EVA film through corona treatment, change the surface tension of EVA film, to improve cohesive force, make EVA film.
As shown in Figure 2, a kind of EVA film, one side is concavo-convex network 3, and the surface configuration of concavo-convex network 3 is rectangle, and cross sectional shape is trapezoidal, and the degree of depth of recess is 15 μm, and the density of concavo-convex network 3 is 2 lattice/10mm
2; Another side is light face 4, and the roughness in light face 4 is 2 μm, makes PVDF/PET/EVA (TPE) solar energy backboard, and with EVA packaging adhesive film 145 DEG C/15min cure package, recording with EVA adhesive film cohesive force is 100N/cm(25 DEG C).
Comparative example
By the TiO of 25kgPE, 75kgEVA, 0.4kg UV absorbers, 0.5kg antioxidant and 7kg
2mix, in vacuum drying oven 80 DEG C of dry 2h, the melt extruder through T-slot is extruded, and when melt extruding, barrel temperature is 180-240 DEG C, and T-shaped die head temperature is 210-230 DEG C.Casting films is entered the faying face of plain bar roller and rubber rollers, be attached on plain bar roller, under the pressuring action of rubber rollers, form ganoid EVA film structure, in then passing through, be provided with the deflector roll cooling of circulation 5 DEG C of cooling waters.
As shown in Figure 3, a kind of EVA film, upper surface 5 and lower surface 6 are shiny surface, the roughness of shiny surface is 1 μm, make PVDF/PET/EVA (TPE) solar energy backboard, with EVA packaging adhesive film 145 DEG C/15min cure package, TPE backboard and EVA adhesive film cohesive force are 40N/cm(25 DEG C).
More than by description of listed embodiment, the basic ideas and basic principles of the present invention are set forth.But the present invention is never limited to above-mentioned listed execution mode, every equivalent variations, the improvement done based on technical scheme of the present invention and deliberately become of inferior quality behavior, all should belong to protection scope of the present invention.
Claims (9)
1. an EVA film, it is characterized in that: described EVA film one side has concavo-convex network, another side is light face, the surface configuration of described concavo-convex network is polygon, described polygon is the one in triangle, rectangle, rhombus, pentagon, hexagon, octagon, decagon, dodecagon, the cross sectional shape of described concavo-convex network is rectangle or trapezoidal, and the density of described concavo-convex network is 2-6 lattice/10mm
2, the recess depths of described concavo-convex network is 1-30 μm.
2. a kind of EVA film according to claim 1, is characterized in that: the surface configuration of described concavo-convex network is rectangle.
3. a kind of EVA film according to claim 1, is characterized in that: the recess depths of described concavo-convex network is 5-15 μm.
4. a kind of EVA film according to claim 1, is characterized in that: the roughness in described EVA film light face is less than 3 μm.
5. a kind of EVA film according to claim 4, is characterized in that: the roughness in described EVA film light face is less than 1 μm.
6. prepare the method as the EVA film as described in arbitrary in claim 1-5, it is characterized in that, step of preparation process is as follows:
A. batch mixing: matrix resin is mixed with functional additive, described matrix resin is formed with the 75-90%EVA mixed with resin accounting for matrix resin quality by the 10-25%PE resin accounting for matrix resin quality, and described functional additive is by the TiO of the 0.1-1% UV absorbers or UV light stabilizing agent, 0.1-0.5% antioxidant and 5-10% that account for matrix resin quality
2composition;
B. dry: by the above-mentioned material mixed in vacuum drying oven 80 DEG C of dry 2h;
C. curtain coating is extruded: adopt screw extruder to melt extrude, and through T-shaped mouth mould curtain coating;
D. shape: by casting films through having steel rider and the rubber rollers calendering of accurate concaveconvex structure, form concavo-convex latticed EVA film;
E. cool: by EVA film, by the interior deflector roll cooling being provided with recirculated cooling water;
F. corona: by the light face of EVA film through corona treatment.
7. a kind of method preparing EVA film according to claim 6, is characterized in that, in described step C, when melt extruding, barrel temperature is 180-240 DEG C, and T-shaped die head temperature is 210-230 DEG C.
8. a kind of method preparing EVA film according to claim 6, is characterized in that, in described step e, cooling water temperature is 5 DEG C.
9. a kind of method preparing EVA film according to claim 6, is characterized in that, in described step F, the voltage that corona treatment adopts is 1.8-2.4KV.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310294936.5A CN103346184B (en) | 2013-07-15 | 2013-07-15 | A kind of EVA film and preparation method thereof |
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| CN201310294936.5A CN103346184B (en) | 2013-07-15 | 2013-07-15 | A kind of EVA film and preparation method thereof |
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| CN103346184A CN103346184A (en) | 2013-10-09 |
| CN103346184B true CN103346184B (en) | 2016-03-02 |
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| CN104449436B (en) * | 2014-12-31 | 2016-08-17 | 明冠新材料股份有限公司 | A kind of solar components encapsulation EVA adhesive film of high steam oxygen-barrier property and preparation method thereof |
| CN106584879A (en) * | 2016-12-01 | 2017-04-26 | 天津三瑞塑胶制品有限公司 | Production technology of mirror surface black decoration film |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201282146Y (en) * | 2008-09-24 | 2009-07-29 | 詹显光 | EVA glue film for photovoltaic component |
| CN102649309A (en) * | 2011-02-23 | 2012-08-29 | 北京化工大学 | Polyvinylidene fluoride composite membrane prepared through multilayer coextrusion tape casting method |
| CN202855771U (en) * | 2012-09-17 | 2013-04-03 | 杭州永业光伏科技有限公司 | Solar energy cell packaging glue film with patterns |
| CN103173145A (en) * | 2013-03-19 | 2013-06-26 | 广州鹿山新材料股份有限公司 | EVA (Ethylene Vinyl-Acetate) glue film special for packaging double glass solar assembly and preparation method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3944619B2 (en) * | 1998-09-09 | 2007-07-11 | 株式会社ブリヂストン | Manufacturing method of EVA film for sealing |
| CN203521444U (en) * | 2013-07-15 | 2014-04-02 | 昆山永翔光电科技有限公司 | EVA film |
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2013
- 2013-07-15 CN CN201310294936.5A patent/CN103346184B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201282146Y (en) * | 2008-09-24 | 2009-07-29 | 詹显光 | EVA glue film for photovoltaic component |
| CN102649309A (en) * | 2011-02-23 | 2012-08-29 | 北京化工大学 | Polyvinylidene fluoride composite membrane prepared through multilayer coextrusion tape casting method |
| CN202855771U (en) * | 2012-09-17 | 2013-04-03 | 杭州永业光伏科技有限公司 | Solar energy cell packaging glue film with patterns |
| CN103173145A (en) * | 2013-03-19 | 2013-06-26 | 广州鹿山新材料股份有限公司 | EVA (Ethylene Vinyl-Acetate) glue film special for packaging double glass solar assembly and preparation method thereof |
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Owner name: CROWN ADVANCED MATERIAL CO., LTD. Free format text: FORMER OWNER: KUNSHAN YONGXIANG PHOTOELECTRIC TECHNOLOGY CO., LTD. Effective date: 20150104 |
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Free format text: CORRECT: ADDRESS; FROM: 215300 SUZHOU, JIANGSU PROVINCE TO: 336000 YICHUN, JIANGXI PROVINCE |
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Effective date of registration: 20150104 Address after: 336000 Jiangxi economic and Technological Development Zone suitable business Avenue Applicant after: CROWN ADVANCED MATERIAL CO., LTD. Address before: 215300, Jiangsu, Suzhou, Kunshan City, Pakistan Town, Zheng Ting Ting Road North Applicant before: Kunshan Yongxiang Optoelectronic Technology Co., Ltd. |
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Address after: 336000 Yichun economic and Technological Development Zone, Jiangxi, Yichun appropriate business Avenue Applicant after: CROWN ADVANCED MATERIAL CO., LTD. Address before: 336000 Jiangxi economic and Technological Development Zone suitable business Avenue Applicant before: CROWN ADVANCED MATERIAL CO., LTD. |
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