CN103045127A - PVB composition for photovoltaic module packaging and PVB packaging film thereof - Google Patents
PVB composition for photovoltaic module packaging and PVB packaging film thereof Download PDFInfo
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- CN103045127A CN103045127A CN2012104860737A CN201210486073A CN103045127A CN 103045127 A CN103045127 A CN 103045127A CN 2012104860737 A CN2012104860737 A CN 2012104860737A CN 201210486073 A CN201210486073 A CN 201210486073A CN 103045127 A CN103045127 A CN 103045127A
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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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Abstract
A PVB composition for photovoltaic module packaging and a PVB packaging film thereof belong to the technical field of photovoltaic module packaging materials. The feed additive is characterized by comprising the following substances in percentage by weight: 60-80% of PVB resin and 0.1-20% of low-polarity water-blocking substances. The PVB composition for photovoltaic module packaging and the PVB packaging film have high insulation resistance and good weather resistance, can obviously improve the electrical performance of the packaging film, have no obvious reduction in insulation performance under the environment of long-time low temperature and high humidity and high temperature and high humidity, have good packaging effect, and can ensure long-time efficient operation of a photovoltaic module.
Description
Technical field
The invention belongs to photovoltaic component encapsulating material technology field, be specially a kind of PVB composition for photovoltaic component encapsulating and PVB encapsulating film thereof.
Background technology
PVB is polyvinyl butyral acetal, and using at China at present also is not wide especially in fact, wherein mainly is a kind of macromolecular material---the PVB intermediate coat through softening agent plasticizing extrusion molding.Under the background that the global energy cost day by day raises, photovoltaic industry is risen just gradually, and the glue that common photovoltaic component encapsulating is used is generally EVA.Because the ageing resistance of EVA is strong, do not reach 50 years work-ing life, can not will affect with assembly the generated energy of the attractive in appearance and system of assembly with life-span and EVA jaundice.And PVB exactly can satisfy this respect requirement, and the key distinction between EVA and the PVB film is that the EVA film is a kind of elastomerics that carries out chemically crosslinked, and the PVB film then is noncrosslinking thermoplastics.When the glass/glass photovoltaic module was made the laminated glass that contains cell piece, they just produced different performances again aspect safety and security personnel.If make interlayer with the EVA film, namely use special thick glass coating to be pressed into glass assembly, also be difficult to the safety standards that reaches same with independent use PVB/ glass.This means that PVB has higher penetration-resistant and better rear fracture property.And these laminated safety glass must satisfy when requiring glass curtain wall just or roof key element integrated.And the two glass photovoltaic curtain walls that adopt PVB to make not only have the energy-conservation effects such as heat insulation and noise reduction, simultaneously, compare with the simple glass curtain wall, can also reduce light pollution.Therefore consider that from permanent interests the advantage of PVB is apparent in view.For a long time, PVB is because its good mechanical property has obtained using widely as safety glass interlayers.As the solar cell package material, the PVB mechanical property can satisfy photovoltaic module fully for the requirement of safety.Yet except mechanical property as packaged material, also preferably electrical property must be arranged, have good insulativity, and its insulation weather resistance should be better.Containing a large amount of hydroxyls in the PVB structure, is the hydrophilic radical of strong polarity.The hydroxyl of strong polarity exists so that the volume specific resistance of PVB will be lower than EVA.And its affinity for water is the unfavourable condition as packaged material of generally acknowledging.But its hydroxyl is again its major cause with adhesiveproperties.Because PVB is for the affinity of water, under long-term hot and humid condition, the moisture of its absorption causes its insulativity sharply to descend, thereby causes the electrical performance testing of photovoltaic module defective, and it is excessive wet leakage current to occur, and power attenuation is excessive etc.CN102292827 introduced a kind of comprise sequestrant prevent or reduce PVB contact and the PVB packaged material of oxidation stain with the metal chunk of solar energy module.CN101728443A has announced a kind of PVB or EVA packaged material of photocuring.Yet as the electrical insulation performance of photovoltaic encapsulation material property outbalance and hot and humid for a long time, or the maintenance of the insulating property of packaged material does not then have invention to set forth under the condition of low temperature and high relative humidity, and this affects PVB just as the salient features of packaged material.
Summary of the invention
For the above-mentioned problems in the prior art, the object of the invention is to design provide a kind of have improve the PVB composition that is used for photovoltaic component encapsulating of electric property and the technical scheme of PVB encapsulating film thereof, this encapsulating film has higher insulation resistance and weathering resistance preferably, at long-time low temperature and high relative humidity, its insulating property obviously do not descend under the hot and humid environment, and packaging effect is good, can guarantee the long-time high efficiency operation of photovoltaic module.
Described a kind of PVB composition for photovoltaic component encapsulating, it is characterized in that containing the following material of weight percentage: the 60-80%PVB resin, the low polarity of the 0.1-20% class material that blocks water, the described low polarity class material that blocks water is to contain or do not contain the silicane of functional group or the silane of type siloxane or modification, silicone compounds, contain or do not contain the aliphatics with 6-40 carbon atom or the aromatic alkylation compound of functional group, contain or do not contain the long-chain fat family with 6-60 carbon atom or the aromatic series lipid of functional group, lipid acid or aliphatic alcohols compound, the low polar polymer that contains or do not contain functional group comprises polysiloxane, polyolefine, one or more mixtures in the polyester.
Described a kind of PVB composition for photovoltaic component encapsulating, it is characterized in that described low polarity block water the class material be polysiloxane, the polysiloxane that contains the double bond functional group, the long-chain fat family alkane that contains epoxy-functional that contain epoxy-functional, contain two keys 18 alkyl fatty acid monoesters, contain long-chain fat family alkane or the silane coupling agent of two keys.
Described a kind of PVB composition for photovoltaic component encapsulating, the content that it is characterized in that the PVB resin is 60%-80%, preferred 70%-75%.
Described a kind of PVB composition for photovoltaic component encapsulating is characterized in that the block water content of class material of low polarity is 0.1%-20%, preferred 5-10%.
Described a kind of PVB composition for photovoltaic component encapsulating, it is characterized in that also containing weight percentage 25-35% softening agent, described softening agent is any known softening agent, is preferably triglycol two 2-ethylhexoate 3GO, Tetraglycol 99 two positive heptanoate 4G7, Uniflex DBS DBS.
Described a kind of PVB composition for photovoltaic component encapsulating is characterized in that also containing the thermo-stabilizer of weight percentage 0.01-1%, and described thermo-stabilizer is any commercially available known thermo-stabilizer.
Described a kind of PVB composition for photovoltaic component encapsulating is characterized in that also containing weight percentage 0.01-1% photostabilizer, and described photostabilizer is any commercially available known photostabilizer.
Described a kind of PVB composition for photovoltaic component encapsulating is characterized in that also containing weight percentage 0.1-50% white pigment, and described white pigment is titanium white class pigment, Zinc-oxide-based pigment or lithopone class pigment.
Described a kind of PVB encapsulating film of making for the PVB composition of photovoltaic component encapsulating is characterized in that: according to the above-mentioned substance ratio, after each component mixed together blanking add film extrusion in the screw extrusion press.
The above-mentioned low polarity that does not contain functional group among the present invention material that blocks water is dispersed in the PVB composition with the physical blending form, yet the separating out of causing in order to prevent low polar material and being separated of PVB composition, also can add some graft reaction initiators, in the blend course of processing, make low polarity hydrophobic substance and PVB resin generation graft reaction and separating out of preventing from being separated and cause.
Another kind of mode of the present invention is to introduce the low polarity the contain functional group class material that blocks water, described functional group can be carboxyl, ester group etc. all can with the group of hydroxyl reaction, and undersaturated functional group, unsaturated functional group is by free radical grafting mode and PVB resin-bonded." dry weight " is the dry weight of PVB resin among the present invention, is exactly the weight behind the removal water from the PVB resin.
PVB resin of the present invention has about 17% residual hydroxy groups to about 23% weight, preferred hydroxy radical content is about 18% to being about 21%, described hydroxyl value can affect the block water consistency of class material of softening agent and low polarity, other character with the PVB resin, usually but be not so absolute, hydroxy radical content is lower, and the softening agent in the invention process and the consistency of low polar material are better.
PVB composition of the present invention also can comprise the surface tension control agent.
According to actual needs, also to be prepared into tool coloured for encapsulating film.In the application of some two glass photovoltaic module, for improve to the specific absorption of sunlight can be in packaged material or backboard add the white light reflecting material.Solution in this invention is to add the pigment that white has high gloss, high-reflectivity in the PVB composition.This pigment comprises known various commercially available white pigment.Preferred white pigment is titanium dioxide class pigment, lithopone class pigment, Zinc-oxide-based pigment.Titanium dioxide class pigment more preferably.
PVB encapsulating film of the present invention can be by various extruding or the acquisition of coextrusion method well known in the art.As under 150 ℃-230 ℃ temperature, blocking water additive and other optional additive coextrusion and obtain to have the PVB composition photovoltaic encapsulation film that improves electric property by PVB resin, softening agent, low polarity.
Above-mentioned a kind of PVB composition and PVB encapsulating film thereof for photovoltaic component encapsulating, have higher insulation resistance and weathering resistance preferably, can significantly improve the electric property of encapsulating film, at long-time low temperature and high relative humidity, its insulating property obviously do not descend under the hot and humid environment, and packaging effect is good, can guarantee the long-time high efficiency operation of photovoltaic module.
The percentage composition that relates in the present specification unless otherwise indicated, other the weight percentage that is pure substance.
Embodiment
The invention will be further described below in conjunction with specific embodiment.
Embodiment 1: contain PVB resin 75g in every 100gPVB composition, 3GO softening agent 25g contains the polysiloxane 5g of epoxy-functional, thermo-stabilizer IRGANOX1010 1g, photostabilizer TINUVIN 326 0.1g; After according to above weight ratio above-mentioned materials being mixed together blanking add by film extrusion in the 83mm twin screw extruder, namely get the PVB encapsulating film.
Embodiment 2: contain PVB resin 65g in every 100gPVB composition, 3GO softening agent 35g contains the polysiloxane 0.2g of epoxy-functional, thermo-stabilizer IRGANOX1010 0.1g, photostabilizer TINUVIN 326 1g; Preparation technology is with embodiment 1.
Embodiment 3: contain PVB resin 80g in every 100gPVB composition, 3GO softening agent 20g contains the polysiloxane 20g of epoxy-functional, thermo-stabilizer IRGANOX1010 0.2g, photostabilizer TINUVIN 326 0.5g; Preparation technology is with embodiment 1.
Embodiment 4: contain PVB resin 72g in every 100gPVB composition, 4G7 softening agent 28g contains double bond functional group's polysiloxane 2g, thermo-stabilizer IRGANOX1010 0.7g, photostabilizer TINUVIN 326 0.3g; Preparation technology is with embodiment 1.
Embodiment 5: contain PVB resin 77g in every 100gPVB composition, 4G7 softening agent 23g contains double bond functional group's polysiloxane 2g, thermo-stabilizer IRGANOX1076 0.4g, photostabilizer TINUVIN 770 0.3g; Preparation technology is with embodiment 1.
Embodiment 6: contain PVB resin 73g in every 100gPVB composition, 3GO softening agent 27g contains the alkane 10g of long-chain fat family of epoxy-functional, thermo-stabilizer IRGANOX1076 0.4g, photostabilizer TINUVIN 770 1g; Preparation technology is with embodiment 1.
Embodiment 7: contain PVB numerical value 75g in every 100gPVB composition, 3GO softening agent 25g contains 18 alkyl fatty acid monoester 5g of two keys, thermo-stabilizer IRGANOX1076 0.4g, photostabilizer TINUVIN 770 0.5g; Preparation technology is with embodiment 1
Embodiment 8: contain PVB resin 73g in every 100gPVB composition, 3GO softening agent 27g contains the alkane 4g of long-chain fat family of two keys, titanium dioxide 50g, and thermo-stabilizer IRGANOX1076 0.1g, light stablize TINUVIN 770 1g; Preparation technology is with embodiment 1.
Embodiment 9: contain PVB resin 73g in every 100gPVB composition, and 3GO softening agent 27g, silane coupling agent Z-6030 1g, titanium dioxide 10g, thermo-stabilizer IRGANOX1076 0.4g, light stablize TINUVIN 770 0.5g; Preparation technology is with embodiment 1.
Above-mentioned materials all can be by directly buying on the market.
For further specifying beneficial effect of the present invention, further prove its technique effect below by corresponding test.
The PVB encapsulating film that above-described embodiment 1-9 makes, tstr encapsulation performance after surveying its volume specific resistance and being used for being made into photovoltaic module.
The mensuration of volume specific resistance: measure according to standard GB/T/T1410-2006 " solid insulating material volume specific resistance and surface resistivity experimental technique ".The PVB packaged material is for the mensuration of photovoltaic component encapsulating effect: after being prepared into assembly by assembly manufacturer, according to IEC61648-2008 or standard GB/T/T9535-1998 " identify and typing with Crystalline Silicon PV Module-design on ground " mensuration.
Test-results is as shown in the table:
| Volume specific resistance (Ω cm) | 1000h humid heat test front assembly resistance (M Ω) | Assembly resistance behind the 1000h humid heat test (M Ω) | |
| Example 1 | 3.2 x10 13 | 55 | 44 |
| Example 2 | 2.3 x10 13 | 50 | 43 |
| Example 3 | 4.6 x10 13 | 51 | 42 |
| Example 4 | 2.8 x10 13 | 50 | 42 |
| Example 5 | 3.8 x10 13 | 49 | 43 |
| Example 6 | 5.1x10 13 | 58 | 46 |
| Example 7 | 3.6x10 13 | 50 | 44 |
| Example 8 | 1.5 x10 14 | 70 | 55 |
| Example 9 | 1.1 x10 14 | 64 | 50 |
Test-results shows: the PVB photovoltaic component encapsulating material that example 1-9 makes, can satisfy behind the desired 1000h humid heat test of IEC standard and national standard the requirement for the component package performance.The adding of the nonpolar class material that blocks water can improve the volume specific resistance of material, thereby improves pvb film as the performance of photovoltaic component encapsulating material.And along with the increase of the class substances content that blocks water, playing volume specific resistance also increases to some extent.The tired material that blocks water that adds among the present invention can improve the encapsulation performance of PVB photovoltaic encapsulation film greatly, can be widely used in the package application of solar-energy photo-voltaic cell.
Claims (9)
1. PVB composition that is used for photovoltaic component encapsulating, it is characterized in that containing the following material of weight percentage: the 60-80%PVB resin, the low polarity of the 0.1-20% class material that blocks water, the described low polarity class material that blocks water is to contain or do not contain the silicane of functional group or the silane of type siloxane or modification, silicone compounds, contain or do not contain the aliphatics with 6-40 carbon atom or the aromatic alkylation compound of functional group, contain or do not contain the long-chain fat family with 6-60 carbon atom or the aromatic series lipid of functional group, lipid acid or aliphatic alcohols compound, the low polar polymer that contains or do not contain functional group comprises polysiloxane, polyolefine, one or more mixtures in the polyester.
2. a kind of PVB composition for photovoltaic component encapsulating as claimed in claim 1 is characterized in that the described low polarity class material that blocks water is polysiloxane, the polysiloxane that contains the double bond functional group, the long-chain fat family alkane that contains epoxy-functional, the 18 alkyl fatty acid monoesters that contain two keys that contain epoxy-functional, long-chain fat family alkane or the silane coupling agent that contains two keys.
3. a kind of PVB composition for photovoltaic component encapsulating as claimed in claim 1, the content that it is characterized in that the PVB resin is 60%-80%, preferred 70%-75%.
4. a kind of PVB composition for photovoltaic component encapsulating as claimed in claim 1 is characterized in that the block water content of class material of low polarity is 0.1%-20%, preferred 5-10%.
5. a kind of PVB composition for photovoltaic component encapsulating as claimed in claim 1 is characterized in that also containing weight percentage 25-35% softening agent.
6. a kind of PVB composition for photovoltaic component encapsulating as claimed in claim 1 is characterized in that also containing the thermo-stabilizer of weight percentage 0.01-1%.
7. a kind of PVB composition for photovoltaic component encapsulating as claimed in claim 1 is characterized in that also containing weight percentage 0.01-1% photostabilizer.
8. a kind of PVB composition for photovoltaic component encapsulating as claimed in claim 1 is characterized in that also containing weight percentage 0.1-50% white pigment, and described white pigment is titanium white class pigment, Zinc-oxide-based pigment or lithopone class pigment.
9. adopt claim 1,2,3,4,5,6 or 7 described a kind of PVB encapsulating films of making for the PVB composition of photovoltaic component encapsulating, it is characterized in that: according to the above-mentioned substance ratio, after each component mixed together blanking add film extrusion in the screw extrusion press.
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| CN201210486073.7A CN103045127B (en) | 2012-11-26 | 2012-11-26 | PVB composition for photovoltaic module packaging and PVB packaging film thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107681015A (en) * | 2017-11-07 | 2018-02-09 | 苏州中来光伏新材股份有限公司 | The preparation method of PVB glued membranes and the solar double-glass assemblies encapsulated with the PVB glued membranes |
| CN108977129A (en) * | 2018-08-10 | 2018-12-11 | 佛山腾鲤新能源科技有限公司 | A kind of weather-proof packaging adhesive film for solar cell |
| CN110591605A (en) * | 2019-09-16 | 2019-12-20 | 升信新材（北京）科技有限公司 | Packaging adhesive film for MWT solar cell and preparation method thereof |
| CN110885641A (en) * | 2019-12-16 | 2020-03-17 | 陕西工业职业技术学院 | High-performance PVB (polyvinyl butyral) adhesive film for packaging solar cell and preparation method thereof |
| CN114316489A (en) * | 2021-12-31 | 2022-04-12 | 浙江德斯泰新材料股份有限公司 | Low-water-absorption PVB intermediate film and preparation process thereof |
| CN116080032A (en) * | 2023-02-21 | 2023-05-09 | 江苏奥天利新材料有限公司 | PVB intermediate film manufacturing method with regular surface lines |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107681015A (en) * | 2017-11-07 | 2018-02-09 | 苏州中来光伏新材股份有限公司 | The preparation method of PVB glued membranes and the solar double-glass assemblies encapsulated with the PVB glued membranes |
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| CN108977129A (en) * | 2018-08-10 | 2018-12-11 | 佛山腾鲤新能源科技有限公司 | A kind of weather-proof packaging adhesive film for solar cell |
| CN110591605A (en) * | 2019-09-16 | 2019-12-20 | 升信新材（北京）科技有限公司 | Packaging adhesive film for MWT solar cell and preparation method thereof |
| CN110885641A (en) * | 2019-12-16 | 2020-03-17 | 陕西工业职业技术学院 | High-performance PVB (polyvinyl butyral) adhesive film for packaging solar cell and preparation method thereof |
| CN114316489A (en) * | 2021-12-31 | 2022-04-12 | 浙江德斯泰新材料股份有限公司 | Low-water-absorption PVB intermediate film and preparation process thereof |
| CN116080032A (en) * | 2023-02-21 | 2023-05-09 | 江苏奥天利新材料有限公司 | PVB intermediate film manufacturing method with regular surface lines |
| CN116080032B (en) * | 2023-02-21 | 2023-09-08 | 江苏奥天利新材料有限公司 | PVB intermediate film manufacturing method with regular surface lines |
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