CN109760342A - A kind of preparation method of PET composite membrane - Google Patents
A kind of preparation method of PET composite membrane Download PDFInfo
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- CN109760342A CN109760342A CN201910033877.3A CN201910033877A CN109760342A CN 109760342 A CN109760342 A CN 109760342A CN 201910033877 A CN201910033877 A CN 201910033877A CN 109760342 A CN109760342 A CN 109760342A
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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
The invention discloses a kind of preparation methods of PET composite membrane, it adds graphene oxide into ultrasonic disperse in dehydrated alcohol and obtain mixed solution the following steps are included: S1, acquisition graphene oxide；S2, PET blank slice and mother's PET slice is added under conditions of mixed solution stirring；S3, lasting stirring, heating, slice are fully immersed into stopping heating and obtain colloid；S4, by colloid on a glass, PET film is obtained using scraper method；S5, it glass plate is put into in 90 DEG C of baking oven drying obtains thickness in the PET film of 20~50 μ m-thicks；S6, using the weathering layer for coating one layer of 5~20 μ m-thick in cladding process PET film after the drying.The present invention is sliced film-forming process altogether using RGO and PET, that is, has reached simple process, low-cost purpose, also meet flexible solar battery block water to PET, bend resistance, light, thin, soft requirement.
Description
Technical field
The invention belongs to manufacture of solar cells manufacturing field, the preparation method of specifically a kind of PET composite membrane.
Background technique
Solar battery is the device for converting light energy into electric energy, and solar battery sheet obtains group through series-parallel then encapsulation
Part, structure are mainly made of foreboard, packaging adhesive film, cell piece, backboard, and component front and rear panels material mainly has tempering glass
The materials such as glass, PET, front and rear panels are located at the outermost layer of component, play a part of protection and support cell piece, therefore foreboard and
The service life that the performance of back plate largely influences component, it is necessary to have the performances such as good insulation, the ageing-resistant, gas that blocks water, PET
The foreboard that film can be used as flexible solar battery also can be used as back plate, but the weatherability of single PET film and block-water performance reach
Less than the encapsulation requirement of flexible solar battery, the flexible solar battery pack front and rear panels of the prior art are mainly PET
Composite membrane, the composite membrane are mainly made of weathering layer, water blocking layer and PET base material layer, " the Ultra of Minnesota Mining and Manufacturing Company's production
Barrier films " and FDK4A product its water blocking layer of Mitsubishi Corporation of Japan production be all using vacuum sputtering of Al xOy,
SixOy etc. achievees the purpose that block water, and application number 201420844811.5 Chinese patent application discloses a kind of high water resistance too
Positive energy battery back-sheet, method are that the nano Si xOy water blocking layer of one layer of 50nm thickness is deposited in PET base material layer one side, are then being hindered
The upper surface of water layer coats the weathering layer of one layer of 5~30 μ m-thick, finally coats one layer of 5~30 μ m-thick in PET base material layer another side
Weathering layer.
Graphene (Graphene) be one kind by carbon atom with sp2Hybridized orbit forms the two dimension that hexangle type is in honeycomb lattice
Carbon nanomaterial, it is almost fully transparent, the light of absorption 2.3%；Thermal coefficient is up to 5300W/ (mK), is higher than carbon
Nanotube and diamond, meanwhile, graphene also has the characteristics such as very high mechanical strength, resistant to bending and aqueous vapor be impervious, due to
Graphene has high transparency, resistant to bending and water resistance characteristic, is adapted to manufacture transparent touch screen, flexible tabula rasa, even too
Positive energy cell package film, but graphene preparation process is complicated at present, expensive, does not meet solar battery to low cost
It is required that redox graphene (RGO) and graphene have similar performance, and preparation process is simple, cheap, is very suitable to
It applies in area of solar cell.
The PET composite membrane preparation process of Minnesota Mining and Manufacturing Company and Mitsubishi Corporation of Japan production is complicated, at high cost, and what is obtained answers
It is thicker, not soft enough to close film thickness, present consumer electronics product is not achieved to light, thin, soft requirement, application number
201420844811.5 Chinese patents prepare nanometer water blocking layer, complex process, at high cost, above method preparation using vapour deposition method
Water blocking layer in flexible solar battery use process be especially consumer electronics product such as: solar energy backpack, umbrella using solar energy,
Portable charged plate is easy cracking, once cracking will lose water stop function.
Summary of the invention
The present invention aiming at the problems existing in the prior art, proposes a kind of preparation method of PET composite membrane.
Technical solution:
A kind of preparation method of PET composite membrane, it the following steps are included:
S1, graphene oxide is obtained, the graphene oxide of 0.5~2 mass fraction is added to the anhydrous of 500 mass fractions
3~5h of ultrasonic disperse obtains mixed solution in ethyl alcohol；
S2, the PET blank slice and 50~100 matter that 50~100 mass fractions are added under conditions of mixed solution stirring
The mother's PET slice for measuring number；PET blank slice refers to that pure polyethylene terephthalate, mother's PET slice refer to containing addition
The polyethylene terephthalate of agent (transparent agent, anti-UV curing agent, antioxidant etc.)；
Mixed liquor is heated to 260~270 DEG C by S3, lasting stirring, and slice is fully immersed into stopping heating and obtains colloid；
S4, by colloid on a glass, obtained with the Kapton Tape KAPYON TAPE of 60 μ m-thicks using scraper method
PET film；
S5, it glass plate is put into in 90 DEG C of baking oven drying obtains thickness in the PET film of 20~50 μ m-thicks；
S6, using the weathering layer for coating one layer of 5~20 μ m-thick in cladding process PET film after the drying.
Preferably, in S1, after obtaining graphene oxide, increase thermal reduction step, obtain redox graphene RGO, it will
The RGO of 0.5~2 mass fraction is added to 3~5h of ultrasonic disperse in the dehydrated alcohol of 500 mass fractions and obtains mixed solution.
Specifically, obtaining graphene oxide by improved Hummers method, steps are as follows:
S1-1 weighs the dense H of 215 mass fractions2SO4, pour into beaker, be then placed in hot water bath；
S1-2 is by the K of 2 mass fractions2S2O8, 2 mass fractions P2O5Under stirring conditions with the graphite of 3 mass fractions
It is added in beaker, heats 4h in 90 DEG C of hot bath, be cooled to room temperature, diluted with the deionized water of 1000 mass fractions,
It places for 24 hours；
Liquid obtained above is centrifugated and obtains sediment by S1-3, and sediment is washed with deionized to neutrality,
It is then placed in 60 DEG C of drying boxes and is dried to obtain powder；
S1-4 is by the NaNO of the powder of 1 mass fraction and 2 mass fractions3, 5 mass fractions KMnO4It is added sequentially to 460
The dense H of mass fraction2SO4In be uniformly mixed, persistently stir 4h；
System temperature is risen to 80 DEG C after having diluted by S1-5, continues to stir 10min at 80 DEG C；
The H of 5 mass fractions is added into beaker by S1-62O215min is persistently stirred, is centrifugated dispersion liquid after cooling；
Obtained drying precipitate is obtained graphene oxide solid powder by S1-7.
Preferably, the material of the weathering layer is fluorubber, polyvinyl fluoride, Kynoar, polytetrafluoroethylene (PTFE), tetrafluoro second
One of alkene-vinyl esters or a variety of mixtures.
Specifically, the ultrasonic disperse time is 4h in S1.
Specifically, heating temperature is to 265 DEG C in S3.
Beneficial effects of the present invention
The present invention provides a kind of redox graphene/PET composite membranes and preparation method thereof, are sliced using RGO and PET
Film-forming process altogether, that is, reached simple process, low-cost purpose, also met flexible solar battery and block water, resist to PET
Bending, light, thin, soft requirement.
Detailed description of the invention
Fig. 1 is PET structure of composite membrane schematic diagram of the invention
Fig. 2 is PET composite membrane top view of the invention
Fig. 3 is water vapo r transmission schematic diagram of the invention
Specific embodiment
Below with reference to embodiment, the invention will be further described, and but the scope of the present invention is not limited thereto:
Embodiment 1:
S1, graphene oxide is obtained, the graphene oxide of 1 mass fraction is added to the dehydrated alcohol of 500 mass fractions
Middle ultrasonic disperse 4h obtains mixed solution；
S2, the PET blank that 80 mass fractions are added under conditions of mixed solution stirring are sliced and the PET of 80 mass fractions
Mother's slice；
Mixed liquor is heated to 265 DEG C by S3, lasting stirring, and slice is fully immersed into stopping heating and obtains colloid；
S4, by colloid on a glass, PET film 1 is obtained using scraper method with the Kapton Tape of 60 μ m-thicks；
S5, it glass plate is put into in 90 DEG C of baking oven drying obtains thickness in the PET film 1 of 30 μ m-thicks；
S6, using the weathering layer 2 for coating one layer of 10 μ m-thick in cladding process PET film 1 after the drying.
Embodiment 2:
S1, graphene oxide is obtained, is heat-treated to obtain redox graphene RGO, the RGO of 1 mass fraction is added
Enter into the dehydrated alcohol of 500 mass fractions ultrasonic disperse 4h and obtains mixed solution；
S2, the PET blank that 80 mass fractions are added under conditions of mixed solution stirring are sliced and the PET of 80 mass fractions
Mother's slice；
Mixed liquor is heated to 265 DEG C by S3, lasting stirring, and slice is fully immersed into stopping heating and obtains colloid；
S4, by colloid on a glass, PET film 1 is obtained using scraper method with the Kapton Tape of 60 μ m-thicks；
S5, it glass plate is put into in 90 DEG C of baking oven drying obtains thickness in the PET film 1 of 30 μ m-thicks；
S6, using the weathering layer 2 for coating one layer of 10 μ m-thick in cladding process PET film 1 after the drying.
In the S1 of embodiment 1 and embodiment 2, graphene oxide is obtained by improved Hummers method, steps are as follows:
S1-1 weighs the dense H of 215 mass fractions2SO4, pour into beaker, be then placed in hot water bath；
S1-2 is by the K of 2 mass fractions2S2O8, 2 mass fractions P2O5Under stirring conditions with the graphite of 3 mass fractions
It is added in beaker, heats 4h in 90 DEG C of hot bath, be cooled to room temperature, diluted with the deionized water of 1000 mass fractions,
It places for 24 hours；
Liquid obtained above is centrifugated and obtains sediment by S1-3, and sediment is washed with deionized to neutrality,
It is then placed in 60 DEG C of drying boxes and is dried to obtain powder；
S1-4 is by the NaNO of the powder of 1 mass fraction and 2 mass fractions3, 5 mass fractions KMnO4It is added sequentially to 460
The dense H of mass fraction2SO4In be uniformly mixed, persistently stir 4h；
System temperature is risen to 80 DEG C after having diluted by S1-5, continues to stir 10min at 80 DEG C；
The H of 5 mass fractions is added into beaker by S1-62O215min is persistently stirred, is centrifugated dispersion liquid after cooling；
Obtained drying precipitate is obtained graphene oxide solid powder by S1-7.
In the S6 of embodiment 1 and embodiment 2, the material of weathering layer 2 is fluorubber, polyvinyl fluoride, Kynoar, poly- four
One of vinyl fluoride, tetrafluoroethylene-Ethylene base ester or a variety of mixtures.
By PET composite membrane made from above-mentioned steps, graphene is substituted with the graphene oxide of preparation, due to graphite oxide
Alkene price is lower than graphene price therefore has low-cost advantage；PET white cut piece, female slice and graphene oxide once at
Film shortens processing step and has achieved the purpose that simple process, while product of the present invention also meets flexible solar battery pair
PET blocks water, bend resistance, light, thin, soft requirement.
In the preparation flow of PET composite membrane:
In S1, graphene oxide/redox graphene mass fraction is selected as 0.5~2 part, and the ultrasonic disperse time is 3
~5h；
In S2, the mass fraction of PET blank slice is selected as 50~100 parts, and the mass fraction of mother's PET slice is selected as 50~
100 parts；
In S3, mixed liquor heating temperature is 260~270 DEG C；
In S5, PET film 1 with a thickness of 20~50 μm；
In S6, weathering layer 2 with a thickness of 5~20 μm；
It can achieve similar effects.
Specific embodiment described herein is only to illustrate to spirit of that invention.The neck of technology belonging to the present invention
The technical staff in domain can make various modifications or additions to the described embodiments or replace by a similar method
In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.
Claims (6)
1. a kind of preparation method of PET composite membrane, it is characterised in that it the following steps are included:
S1, graphene oxide is obtained, the graphene oxide of 0.5~2 mass fraction is added to the dehydrated alcohol of 500 mass fractions
Middle 3~5h of ultrasonic disperse obtains mixed solution；
S2, the PET blank slice and 50~100 mass parts that 50~100 mass fractions are added under conditions of mixed solution stirring
Several mother's PET slices；
Mixed liquor is heated to 260~270 DEG C by S3, lasting stirring, and slice is fully immersed into stopping heating and obtains colloid；
S4, by colloid on a glass, PET film (1) is obtained using scraper method with the Kapton Tape of 60 μ m-thicks；
S5, it glass plate is put into in 90 DEG C of baking oven drying obtains thickness in the PET film (1) of 20~50 μ m-thicks；
S6, using the weathering layer (2) for coating one layer of 5~20 μ m-thick in cladding process PET film (1) after the drying.
2. a kind of preparation method of PET composite membrane according to claim 1, it is characterised in that in S1, obtain graphite oxide
After alkene, increases thermal reduction step, obtain redox graphene RGO, the RGO of 0.5~2 mass fraction is added to 500 mass
3~5h of ultrasonic disperse obtains mixed solution in the dehydrated alcohol of number.
3. a kind of preparation method of PET composite membrane according to claim 1 or 2, it is characterised in that by improved
Hummers method obtains graphene oxide, and steps are as follows:
S1-1 weighs the dense H of 215 mass fractions2SO4, pour into beaker, be then placed in hot water bath；
S1-2 is by the K of 2 mass fractions2S2O8, 2 mass fractions P2O5It is added under stirring conditions with the graphite of 3 mass fractions
Into beaker, 4h is heated in 90 DEG C of hot bath, is cooled to room temperature, diluted, placed with the deionized water of 1000 mass fractions
24h；
Liquid obtained above is centrifugated and obtains sediment by S1-3, sediment is washed with deionized to neutrality, then
It is put into 60 DEG C of drying boxes and is dried to obtain powder；
S1-4 is by the NaNO of the powder of 1 mass fraction and 2 mass fractions3, 5 mass fractions KMnO4It is added sequentially to 460 mass
The dense H of number2SO4In be uniformly mixed, persistently stir 4h；
System temperature is risen to 80 DEG C after having diluted by S1-5, continues to stir 10min at 80 DEG C；
The H of 5 mass fractions is added into beaker by S1-62O215min is persistently stirred, is centrifugated dispersion liquid after cooling；
Obtained drying precipitate is obtained graphene oxide solid powder by S1-7.
4. a kind of preparation method of PET composite membrane according to claim 1, it is characterised in that the material of the weathering layer (2)
Material is one of fluorubber, polyvinyl fluoride, Kynoar, polytetrafluoroethylene (PTFE), tetrafluoroethylene-Ethylene base ester or a variety of mixing
Object.
5. a kind of preparation method of PET composite membrane according to claim 1 or 2, it is characterised in that in S1, when ultrasonic disperse
Between be 4h.
6. a kind of preparation method of PET composite membrane according to claim 1, it is characterised in that in S3, heating temperature to 265
℃。
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|---|---|---|---|---|
| CN102115566A (en) * | 2011-01-06 | 2011-07-06 | 西安理工大学 | Preparation method for graphene oxide with high barrier property and polymer nanocomposite film |
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2019
- 2019-01-15 CN CN201910033877.3A patent/CN109760342A/en active Pending
Patent Citations (7)
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| CN102115566A (en) * | 2011-01-06 | 2011-07-06 | 西安理工大学 | Preparation method for graphene oxide with high barrier property and polymer nanocomposite film |
| CN103059676A (en) * | 2012-11-29 | 2013-04-24 | 乐凯胶片股份有限公司 | Solar cell back film |
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