CN107611209B - A kind of solar cell backboard and its production method - Google Patents
A kind of solar cell backboard and its production method Download PDFInfo
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical class [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 52
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 50
- 239000004205 dimethyl polysiloxane Substances 0.000 claims abstract description 38
- 235000013870 dimethyl polysiloxane Nutrition 0.000 claims abstract description 38
- CXQXSVUQTKDNFP-UHFFFAOYSA-N octamethyltrisiloxane Chemical compound C[Si](C)(C)O[Si](C)(C)O[Si](C)(C)C CXQXSVUQTKDNFP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 238000004987 plasma desorption mass spectroscopy Methods 0.000 claims abstract description 38
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims abstract description 38
- 240000002853 Nelumbo nucifera Species 0.000 claims abstract description 19
- 235000006508 Nelumbo nucifera Nutrition 0.000 claims abstract description 19
- 235000006510 Nelumbo pentapetala Nutrition 0.000 claims abstract description 19
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000011737 fluorine Substances 0.000 claims abstract description 11
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 11
- 229910021389 graphene Inorganic materials 0.000 claims description 50
- 239000011248 coating agent Substances 0.000 claims description 43
- 238000000576 coating method Methods 0.000 claims description 43
- 238000002360 preparation method Methods 0.000 claims description 42
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 41
- 239000002994 raw material Substances 0.000 claims description 27
- 229960000935 dehydrated alcohol Drugs 0.000 claims description 26
- 230000004048 modification Effects 0.000 claims description 20
- 238000012986 modification Methods 0.000 claims description 20
- 239000003431 cross linking reagent Substances 0.000 claims description 17
- 239000006185 dispersion Substances 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 239000003085 diluting agent Substances 0.000 claims description 14
- 238000007731 hot pressing Methods 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 14
- 239000011347 resin Substances 0.000 claims description 14
- 229920005989 resin Polymers 0.000 claims description 14
- 238000006243 chemical reaction Methods 0.000 claims description 13
- 239000008367 deionised water Substances 0.000 claims description 13
- 229910021641 deionized water Inorganic materials 0.000 claims description 13
- 238000001291 vacuum drying Methods 0.000 claims description 13
- 238000010792 warming Methods 0.000 claims description 13
- 238000005406 washing Methods 0.000 claims description 12
- 239000011159 matrix material Substances 0.000 claims description 9
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 8
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 claims description 8
- UHESRSKEBRADOO-UHFFFAOYSA-N ethyl carbamate;prop-2-enoic acid Chemical compound OC(=O)C=C.CCOC(N)=O UHESRSKEBRADOO-UHFFFAOYSA-N 0.000 claims description 8
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 8
- 238000000926 separation method Methods 0.000 claims description 8
- 229920005573 silicon-containing polymer Polymers 0.000 claims description 8
- ZDQNWDNMNKSMHI-UHFFFAOYSA-N 1-[2-(2-prop-2-enoyloxypropoxy)propoxy]propan-2-yl prop-2-enoate Chemical group C=CC(=O)OC(C)COC(C)COCC(C)OC(=O)C=C ZDQNWDNMNKSMHI-UHFFFAOYSA-N 0.000 claims description 7
- 239000002202 Polyethylene glycol Substances 0.000 claims description 7
- 125000004386 diacrylate group Chemical group 0.000 claims description 7
- 229960004756 ethanol Drugs 0.000 claims description 7
- 239000012528 membrane Substances 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- 229920001223 polyethylene glycol Polymers 0.000 claims description 7
- 239000000758 substrate Substances 0.000 claims description 7
- NWZSZGALRFJKBT-KNIFDHDWSA-N (2s)-2,6-diaminohexanoic acid;(2s)-2-hydroxybutanedioic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O.NCCCC[C@H](N)C(O)=O NWZSZGALRFJKBT-KNIFDHDWSA-N 0.000 claims description 6
- IKDUDTNKRLTJSI-UHFFFAOYSA-N hydrazine monohydrate Substances O.NN IKDUDTNKRLTJSI-UHFFFAOYSA-N 0.000 claims description 6
- 229920002313 fluoropolymer Polymers 0.000 claims description 3
- 239000004811 fluoropolymer Substances 0.000 claims description 3
- 239000012956 1-hydroxycyclohexylphenyl-ketone Substances 0.000 claims description 2
- MQDJYUACMFCOFT-UHFFFAOYSA-N bis[2-(1-hydroxycyclohexyl)phenyl]methanone Chemical compound C=1C=CC=C(C(=O)C=2C(=CC=CC=2)C2(O)CCCCC2)C=1C1(O)CCCCC1 MQDJYUACMFCOFT-UHFFFAOYSA-N 0.000 claims description 2
- -1 dipentaerythritol Ester Chemical class 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims 1
- 239000007822 coupling agent Substances 0.000 claims 1
- 229910000077 silane Inorganic materials 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 12
- 238000005516 engineering process Methods 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 65
- 229920000139 polyethylene terephthalate Polymers 0.000 description 16
- 239000005020 polyethylene terephthalate Substances 0.000 description 16
- 238000007711 solidification Methods 0.000 description 11
- 230000008023 solidification Effects 0.000 description 11
- 239000003795 chemical substances by application Substances 0.000 description 9
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 6
- 239000011521 glass Substances 0.000 description 6
- TXBCBTDQIULDIA-UHFFFAOYSA-N 2-[[3-hydroxy-2,2-bis(hydroxymethyl)propoxy]methyl]-2-(hydroxymethyl)propane-1,3-diol Chemical compound OCC(CO)(CO)COCC(CO)(CO)CO TXBCBTDQIULDIA-UHFFFAOYSA-N 0.000 description 5
- 229920001780 ECTFE Polymers 0.000 description 5
- 239000012790 adhesive layer Substances 0.000 description 4
- 238000005304 joining Methods 0.000 description 4
- 239000002352 surface water Substances 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 239000005030 aluminium foil Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920002799 BoPET Polymers 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000006471 dimerization reaction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 239000002346 layers by function Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- 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
Landscapes
- Carbon And Carbon Compounds (AREA)
- Laminated Bodies (AREA)
- Photovoltaic Devices (AREA)
Abstract
The present invention relates to a kind of solar cell backboard and its production methods, belong to solar battery equipment technology field.Present invention utilizes lotus leaves as template, PDMS soft template layer has been prepared as template by the dimple nonreentrant surface on its surface, having been prepared again by soft template on the surface of pet layer has hydrophobic photocurable layers, also it is provided with preferable super-hydrophobicity, may be implemented and the easier combination in the surface of the fluorine material of high energy using the characteristic；Meanwhile modified graphene is also added into photocurable layers as Heat Conduction Material, also improve the thermal conductivity of backboard.
Description
Technical field
The present invention relates to a kind of solar cell backboard and its production methods, belong to solar battery equipment technology field.
Background technique
Battery back-sheet is located at the outermost layer at the back side of component, protects solar cell module not by steam in outdoor environment
Erosion, blocking oxygen prevents oxidation, high-low temperature resistant, good insulating properties and ageing-resistant performance, corrosion resistance, can be with
Sunlight is reflected, improves the transformation efficiency of component, infrared emittance with higher can reduce the temperature of component.Solar energy back
The main use material of plate is PET(polyethylene terephthalate), it has excellent physical mechanical property, is used for a long time
For temperature up to 120 DEG C, short-period used is resistant to 150 DEG C of high temperature, is resistant to -70 DEG C of low temperature, and to its mechanical performance when high and low temperature
Influence very little.Electrical insulating property is excellent, or even under high-temperature high-frequency, electrical property is still preferable, but corona resistance is poor, creep resistant
Property, fatigue durability, rub resistance, dimensional stability are all fine.Gas and vapor permeability are low, have excellent choke, resistance
The performances such as water.Backboard is generally all with PET film as support.The backboard being combined by multilayer PET also has certain market
Using.
Such as: CN204914770U discloses a kind of compound film for solar battery rear board, including ECTFE film, the first glue layer,
PET sheet, the second glue layer, aluminium foil layer, third glue layer, ECTFE film, the first ECTFE film and the 2nd ECTFE film make solar-electricity
The weatherability and chemical corrosivity of pond rear panel compound film enhance；Keep solar cell backboard compound equipped with ECTFE film and aluminium foil layer
The block-water performance of film enhances, and preferably protects cell piece, extends the service life of solar cell module.CN106328760A is public
Open a kind of production technology of low-cost solar battery back-sheet, including PET base material, polyester weathering protective layer and coat.
CN204271102U discloses a kind of anti-pollution type solar cell backboard with PE weathering layer, the anti-pollution type solar battery back
Plate includes the resistant coating set gradually from top to bottom, the first adhesive layer, PET base material layer, the second adhesive layer and PE weathering layer, and
The two sides of one adhesive layer is bonded with resistant coating, PET base material layer respectively, the two sides of the second adhesive layer respectively with PET base material layer, PE
Weathering layer fitting.
But if when simply being fitted using the functional layer on PET base material and its surface, be easy to cause thermally conductive
The problem that performance is bad, the binding force between two layers is not high.
Summary of the invention
The purpose of the present invention is: it solves in the fluorine-containing coat on PET solar panel and binding force is not between pet layer
Problem high, thermal diffusivity is bad.Using the preparation of the hydrophobic coating based on template, pet layer and fluorine material layer are realized
Between improve the effect of binding force and thermal conductivity.
Technical solution is:
A kind of production method of solar cell backboard, includes the following steps:
Step 1, the preparation of PDMS soft template layer: by dimethyl silicone polymer (PDMS) and crosslinking agent according to weight ratio 10~
15:1 is uniformly mixed, and then pours in the surface of fresh lotus leaf, then be placed in baking oven and solidified, after taking-up, lotus leaf is shelled
From PDMS soft template layer has been prepared as template in the dimple nonreentrant surface that the surface of lotus leaf is utilized；
Step 2, the preparation of the graphene oxide of surface-crosslinked modification: by weight, take graphene oxide (GO) 35~
50 parts are scattered in 340~420 parts of dehydrated alcohol, the pH to 4~5 that HCl adjusts dispersion liquid are added, then by 2~4wt%
230~310 parts of ethanol solution of silane coupling agent are slowly added dropwise in above-mentioned dispersion liquid, are warming up to 55~65 DEG C and carry out reaction 12
~14h, centrifuge separation, solids are successively washed with dehydrated alcohol and deionized water, and surface-crosslinked modification is obtained after vacuum drying
Graphene oxide；
Step 3, the preparation of surface-functionalized graphene: by 20~35 parts of graphene oxide dispersions of surface-crosslinked modification
In 250~380 parts of dehydrated alcohol, 60~75 parts of hydrazine hydrate is then added, be warming up to 50~70 DEG C carry out reaction 10~
12h after being centrifugated product, successively after dehydrated alcohol washing, deionized water washing, vacuum drying, obtains surface work
The graphene of energyization；
Step 4, the preparation of hydrophobic heat conducting coating raw material: by weight, by 50~65 parts of matrix resin, photoinitiator 1
~3 parts, 5~10 parts of reactive diluent, 3~6 parts of crosslinking agent, surface-functionalized 6~12 parts of graphene be uniformly mixed, dredged
Water heat conducting coating raw material；
The preparation of hydrophobic heat-conducting layer: step 5 coats hydrophobic heat conducting coating raw material in PET substrate film, then hydrophobic thermally conductive
The surface of coating material covers PDMS soft template layer, is placed in 10~60min of irradiation under ultraviolet lamp, then PDMS soft template layer is taken off
Under, it is placed in 4~6h of drying in 40~45 DEG C of baking oven；
Step 6, the preparation of fluorine-containing weathering layer: the hot pressing fluoropolymer on the surface for the hydrophobic heat-conducting layer that step 5 obtains
Layer.
In the step 1, solidification temperature is 35~38 DEG C, and curing time is 3~6h.
In the step 2, the silane coupling agent is selected from KH550, KH560 or KH570.
In the step 4, matrix resin is selected from urethane acrylate and polyethyleneglycol diacrylate according to weight
Than the mixing of 2:0.5~1；The photoinitiator is selected from 2- hydroxy-2-methyl -1- phenyl ketone or 1- hydroxy-cyciohexyl -
Phenyl ketone；The reactive diluent is selected from tripropylene glycol diacrylate；The crosslinking agent is selected from dimerization Ji Wusi
Five acrylate of alcohol.
In the step 5, the thickness of coating is 0.1~1mm；The wavelength of ultraviolet light irradiation is 362nm, and luminous intensity is
600~800 μ W/cm2。
In the step 6, fluoropolymer layer refers to pvdf membrane；The pressure of hot pressing is 0.1~1Mpa, temperature is 80~
110℃。
Solar cell backboard prepared by the above method.
Beneficial effect
Present invention utilizes lotus leaves as template, and PDMS has been prepared as template by the dimple nonreentrant surface on its surface
Soft template layer, then prepared by soft template on the surface of pet layer there are hydrophobic photocurable layers, it may have it is preferable
Super-hydrophobicity may be implemented and the easier combination in the surface of the fluorine material of high energy using the characteristic；Meanwhile in photocurable layers
In be also added into modified graphene as Heat Conduction Material, also improve the thermal conductivity of backboard.
Detailed description of the invention
Fig. 1 is the surface water droplet contact angle photo for the hydrophobic heat conducting coating being prepared in step 5 in embodiment 3.
Fig. 2 is the surface water droplet contact angle photo for the hydrophobic heat conducting coating being prepared in step 5 in reference examples 1.
Specific embodiment
In embodiment below, the dimethyl silicone polymer (PDMS) used is the Sylgard 184 of Dow Corning；
Urethane acrylate uses the CN990 of Satomer.
Embodiment 1
The production method of solar cell backboard, step:
Step 1, the preparation of PDMS soft template layer: by dimethyl silicone polymer (PDMS) and crosslinking agent according to weight ratio 10:1
It is uniformly mixed, then pours in the surface of fresh lotus leaf, then be placed in baking oven and solidified, solidification temperature is 35 DEG C, solidification
Time is 3h, and after taking-up, lotus leaf is removed, that is, the dimple nonreentrant surface that the surface of lotus leaf is utilized is prepared as template
PDMS soft template layer；
The preparation of the graphene oxide of surface-crosslinked modification: step 2 by weight, takes 35 parts of graphene oxide (GO)
It is scattered in 340 parts of dehydrated alcohol, the pH to 4~5 that HCl adjusts dispersion liquid is added, then by 2wt% silane coupling agent
230 parts of ethanol solution of KH550 are slowly added dropwise in above-mentioned dispersion liquid, are warming up to 55 DEG C and carry out reaction 12h, centrifuge separation, Gu
Body object is successively washed with dehydrated alcohol and deionized water, and the graphene oxide of surface-crosslinked modification is obtained after vacuum drying；
The preparation of surface-functionalized graphene: step 3 20 parts of graphene oxide of surface-crosslinked modification is scattered in
In 250~380 parts of dehydrated alcohol, 60 parts of hydrazine hydrate is then added, is warming up to 50 DEG C and carries out reaction 10h, product is centrifuged
After separation, successively after dehydrated alcohol washing, deionized water washing, vacuum drying, surface-functionalized graphene is obtained；
The preparation of hydrophobic heat conducting coating raw material: step 4 by weight, by 50 parts of matrix resin, 1 part of photoinitiator, is lived
Property 5 parts of diluent, 3 parts of crosslinking agent, surface-functionalized 6 parts of graphene be uniformly mixed, obtain hydrophobic heat conducting coating raw material；Main body
Resin is selected from urethane acrylate and polyethyleneglycol diacrylate according to the mixing of weight ratio 2:0.5；Described is light-initiated
Agent is 2- hydroxy-2-methyl -1- phenyl ketone；The reactive diluent is tripropylene glycol diacrylate；The friendship
Joining agent is five acrylate of dipentaerythritol；
The preparation of hydrophobic heat-conducting layer: step 5 coats hydrophobic heat conducting coating raw material in PET substrate film, the thickness of coating is
0.1mm, then PDMS soft template layer is covered on the surface of hydrophobic heat conducting coating raw material, it is placed under ultraviolet lamp and irradiates 10min, ultraviolet lamp
The wavelength of irradiation is 362nm, and luminous intensity is 600 μ W/cm2, then PDMS soft template layer taken off, it is placed in 40 DEG C of baking oven and dries
4h；
Step 6, the preparation of fluorine-containing weathering layer: the hot pressing pvdf membrane on the surface for the hydrophobic heat-conducting layer that step 5 obtains；Hot pressing
Pressure be 0.1Mpa, temperature is 80 DEG C.
Embodiment 2
Step 1, the preparation of PDMS soft template layer: by dimethyl silicone polymer (PDMS) and crosslinking agent according to weight ratio 15:1
It is uniformly mixed, then pours in the surface of fresh lotus leaf, then be placed in baking oven and solidified, solidification temperature is 38 DEG C, solidification
Time is 6h, and after taking-up, lotus leaf is removed, that is, the dimple nonreentrant surface that the surface of lotus leaf is utilized is prepared as template
PDMS soft template layer；
The preparation of the graphene oxide of surface-crosslinked modification: step 2 by weight, takes 50 parts of graphene oxide (GO)
It is scattered in 420 parts of dehydrated alcohol, the pH to 4~5 that HCl adjusts dispersion liquid is added, then by 4wt% silane coupling agent
310 parts of ethanol solution of KH550 are slowly added dropwise in above-mentioned dispersion liquid, are warming up to 65 DEG C and carry out reaction 14h, centrifuge separation, Gu
Body object is successively washed with dehydrated alcohol and deionized water, and the graphene oxide of surface-crosslinked modification is obtained after vacuum drying；
The preparation of surface-functionalized graphene: step 3 35 parts of graphene oxide of surface-crosslinked modification is scattered in
In 380 parts of dehydrated alcohol, 75 parts of hydrazine hydrate is then added, is warming up to 70 DEG C and carries out reaction 12h, product is centrifugated
Afterwards, surface-functionalized graphene successively is obtained after dehydrated alcohol washing, deionized water washing, vacuum drying；
The preparation of hydrophobic heat conducting coating raw material: step 4 by weight, by 65 parts of matrix resin, 3 parts of photoinitiator, is lived
Property 10 parts of diluent, 6 parts of crosslinking agent, surface-functionalized 12 parts of graphene be uniformly mixed, obtain hydrophobic heat conducting coating raw material；It is main
Body resin is selected from urethane acrylate and polyethyleneglycol diacrylate according to the mixing of weight ratio 2:1；Described is light-initiated
Agent is 1- hydroxy-cyclohexyl-phenyl ketone；The reactive diluent is tripropylene glycol diacrylate；The crosslinking
Agent is five acrylate of dipentaerythritol；
The preparation of hydrophobic heat-conducting layer: step 5 coats hydrophobic heat conducting coating raw material in PET substrate film, the thickness of coating is
1mm, then PDMS soft template layer is covered on the surface of hydrophobic heat conducting coating raw material, it is placed under ultraviolet lamp and irradiates 60min, ultraviolet lamp shines
The wavelength penetrated is 362nm, and luminous intensity is 800 μ W/cm2, then PDMS soft template layer taken off, it is placed in 45 DEG C of baking oven and dries 4
~6h；
Step 6, the preparation of fluorine-containing weathering layer: the hot pressing pvdf membrane on the surface for the hydrophobic heat-conducting layer that step 5 obtains；Hot pressing
Pressure be 1Mpa, temperature is 110 DEG C.
Embodiment 3
Step 1, the preparation of PDMS soft template layer: by dimethyl silicone polymer (PDMS) and crosslinking agent according to weight ratio 12:1
It is uniformly mixed, then pours in the surface of fresh lotus leaf, then be placed in baking oven and solidified, solidification temperature is 36 DEG C, solidification
Time is 4h, and after taking-up, lotus leaf is removed, that is, the dimple nonreentrant surface that the surface of lotus leaf is utilized is prepared as template
PDMS soft template layer；
The preparation of the graphene oxide of surface-crosslinked modification: step 2 by weight, takes 45 parts of graphene oxide (GO)
It is scattered in 360 parts of dehydrated alcohol, the pH to 4~5 that HCl adjusts dispersion liquid is added, then by 3wt% silane coupling agent
260 parts of ethanol solution of KH550 are slowly added dropwise in above-mentioned dispersion liquid, are warming up to 60 DEG C and carry out reaction 13h, centrifuge separation, Gu
Body object is successively washed with dehydrated alcohol and deionized water, and the graphene oxide of surface-crosslinked modification is obtained after vacuum drying；
The preparation of surface-functionalized graphene: step 3 28 parts of graphene oxide of surface-crosslinked modification is scattered in
In 280 parts of dehydrated alcohol, 65 parts of hydrazine hydrate is then added, is warming up to 55 DEG C and carries out reaction 11h, product is centrifugated
Afterwards, surface-functionalized graphene successively is obtained after dehydrated alcohol washing, deionized water washing, vacuum drying；
The preparation of hydrophobic heat conducting coating raw material: step 4 by weight, by 56 parts of matrix resin, 2 parts of photoinitiator, is lived
Property 7 parts of diluent, 5 parts of crosslinking agent, surface-functionalized 8 parts of graphene be uniformly mixed, obtain hydrophobic heat conducting coating raw material；Main body
Resin is selected from urethane acrylate and polyethyleneglycol diacrylate according to the mixing of weight ratio 2:0.8；Described is light-initiated
Agent is 2- hydroxy-2-methyl -1- phenyl ketone；The reactive diluent is tripropylene glycol diacrylate；The friendship
Joining agent is five acrylate of dipentaerythritol；
The preparation of hydrophobic heat-conducting layer: step 5 coats hydrophobic heat conducting coating raw material in PET substrate film, the thickness of coating is
0.5mm, then PDMS soft template layer is covered on the surface of hydrophobic heat conducting coating raw material, it is placed under ultraviolet lamp and irradiates 30min, ultraviolet lamp
The wavelength of irradiation is 362nm, and luminous intensity is 700 μ W/cm2, then PDMS soft template layer taken off, it is placed in 42 DEG C of baking oven and dries
5h；The surface water droplet contact angle photo of hydrophobic heat conducting coating is as shown in Figure 1, about 162 °.
Step 6, the preparation of fluorine-containing weathering layer: the hot pressing pvdf membrane on the surface for the hydrophobic heat-conducting layer that step 5 obtains；Hot pressing
Pressure be 0.5Mpa, temperature is 90 DEG C.
Reference examples 1
Difference with embodiment 3 is: not using basal plane of the lotus leaf as soft template, but directlys adopt the smooth glass in surface
Glass plate.
Step 1, the preparation of PDMS soft template layer: by dimethyl silicone polymer (PDMS) and crosslinking agent according to weight ratio 12:1
It is uniformly mixed, then pours on smooth glass plate, then be placed in baking oven and solidified, solidification temperature is 36 DEG C, when solidification
Between be 4h, after taking-up, by glass plate remove, PDMS soft template layer has been prepared；
The preparation of the graphene oxide of surface-crosslinked modification: step 2 by weight, takes 45 parts of graphene oxide (GO)
It is scattered in 360 parts of dehydrated alcohol, the pH to 4~5 that HCl adjusts dispersion liquid is added, then by 3wt% silane coupling agent
260 parts of ethanol solution of KH550 are slowly added dropwise in above-mentioned dispersion liquid, are warming up to 60 DEG C and carry out reaction 13h, centrifuge separation, Gu
Body object is successively washed with dehydrated alcohol and deionized water, and the graphene oxide of surface-crosslinked modification is obtained after vacuum drying；
The preparation of surface-functionalized graphene: step 3 28 parts of graphene oxide of surface-crosslinked modification is scattered in
In 280 parts of dehydrated alcohol, 65 parts of hydrazine hydrate is then added, is warming up to 55 DEG C and carries out reaction 11h, product is centrifugated
Afterwards, surface-functionalized graphene successively is obtained after dehydrated alcohol washing, deionized water washing, vacuum drying；
The preparation of hydrophobic heat conducting coating raw material: step 4 by weight, by 56 parts of matrix resin, 2 parts of photoinitiator, is lived
Property 7 parts of diluent, 5 parts of crosslinking agent, surface-functionalized 8 parts of graphene be uniformly mixed, obtain hydrophobic heat conducting coating raw material；Main body
Resin is selected from urethane acrylate and polyethyleneglycol diacrylate according to the mixing of weight ratio 2:0.8；Described is light-initiated
Agent is 2- hydroxy-2-methyl -1- phenyl ketone；The reactive diluent is tripropylene glycol diacrylate；The friendship
Joining agent is five acrylate of dipentaerythritol；
The preparation of hydrophobic heat-conducting layer: step 5 coats hydrophobic heat conducting coating raw material in PET substrate film, the thickness of coating is
0.5mm, then PDMS soft template layer is covered on the surface of hydrophobic heat conducting coating raw material, it is placed under ultraviolet lamp and irradiates 30min, ultraviolet lamp
The wavelength of irradiation is 362nm, and luminous intensity is 700 μ W/cm2, then PDMS soft template layer taken off, it is placed in 42 DEG C of baking oven and dries
5h；The surface water droplet contact angle photo of hydrophobic heat conducting coating is as shown in Fig. 2, about 134 °
Step 6, the preparation of fluorine-containing weathering layer: the hot pressing pvdf membrane on the surface for the hydrophobic heat-conducting layer that step 5 obtains；Hot pressing
Pressure be 0.5Mpa, temperature is 90 DEG C.
Reference examples 2
Difference with embodiment 3 is: not to the surface-functionalized of graphene.
Step 1, the preparation of PDMS soft template layer: by dimethyl silicone polymer (PDMS) and crosslinking agent according to weight ratio 12:1
It is uniformly mixed, then pours on smooth glass plate, then be placed in baking oven and solidified, solidification temperature is 36 DEG C, when solidification
Between be 4h, after taking-up, by glass plate remove, PDMS soft template layer has been prepared；
The preparation of the graphene oxide of surface-crosslinked modification: step 2 by weight, takes 45 parts of graphene oxide (GO)
It is scattered in 360 parts of dehydrated alcohol, the pH to 4~5 that HCl adjusts dispersion liquid is added, then by 3wt% silane coupling agent
260 parts of ethanol solution of KH550 are slowly added dropwise in above-mentioned dispersion liquid, are warming up to 60 DEG C and carry out reaction 13h, centrifuge separation, Gu
Body object is successively washed with dehydrated alcohol and deionized water, and the graphene oxide of surface-crosslinked modification is obtained after vacuum drying；
The preparation of hydrophobic heat conducting coating raw material: step 3 by weight, by 56 parts of matrix resin, 2 parts of photoinitiator, is lived
Property 7 parts of diluent, 5 parts of crosslinking agent, surface-functionalized 8 parts of graphene be uniformly mixed, obtain hydrophobic heat conducting coating raw material；Main body
Resin is selected from urethane acrylate and polyethyleneglycol diacrylate according to the mixing of weight ratio 2:0.8；Described is light-initiated
Agent is 2- hydroxy-2-methyl -1- phenyl ketone；The reactive diluent is tripropylene glycol diacrylate；The friendship
Joining agent is five acrylate of dipentaerythritol；
The preparation of hydrophobic heat-conducting layer: step 4 coats hydrophobic heat conducting coating raw material in PET substrate film, the thickness of coating is
0.5mm, then PDMS soft template layer is covered on the surface of hydrophobic heat conducting coating raw material, it is placed under ultraviolet lamp and irradiates 30min, ultraviolet lamp
The wavelength of irradiation is 362nm, and luminous intensity is 700 μ W/cm2, then PDMS soft template layer taken off, it is placed in 42 DEG C of baking oven and dries
5h；
Step 5, the preparation of fluorine-containing weathering layer: the hot pressing pvdf membrane on the surface for the hydrophobic heat-conducting layer that step 4 obtains；Hot pressing
Pressure be 0.5Mpa, temperature is 90 DEG C.
Reference examples 3
Solar cell backboard in CN104409549A.
The characterize data for the solar cell backboard that above embodiments and reference examples are prepared is as follows:
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Reference examples 1 | Reference examples 2 | Reference examples 3 | |
| Ultraviolet blocking rate % | 89.2 | 89.8 | 89.4 | 87.2 | 86.4 | 86~88 |
| Breakdown voltage KV | 20 | 21 | 22 | 18 | 17 | 12~17 |
| Steam breathability g/ (m2d) | 0.57 | 0.65 | 0.61 | 0.81 | 0.78 | 1.3~1.6 |
| Thermal coefficient W/mK | 28.3 | 24.3 | 34.4 | 14.2 | 15.2 | 3.0~5.0 |
| Resistivity Ω m | 1.12× 1016 | 1.23× 1016 | 1.06× 1016 | 1.54× 1016 | 1.49× 1016 | 1.5~1.8 × 1016 |
As can be seen from the above table, the solar energy backboard that the present invention is prepared has preferable thermal diffusivity, thermally conductive system
Number is larger, is better than product in the prior art；It can be seen that by the comparison of embodiment 3 and reference examples 1 and make by using lotus leaf
It can effectively make hydrophobic coating that there is better hydrophobicity for soft template, keep the combination between itself and PVDF layers closer, make
Thermal coefficient significantly improves；By embodiment 3 and reference examples 2 as can be seen that by carrying out surface-functionalized processing to graphene
Later, dispersion between graphene and hydrophobic coating and compatibility can be made more preferable, preferably mentioned using the thermal conductivity of graphene
High thermal conductivity effect.
Claims (5)
1. a kind of production method of solar cell backboard, which comprises the steps of:
Step 1, the preparation of PDMS soft template layer: by dimethyl silicone polymer (PDMS) and crosslinking agent according to 10~15:1 of weight ratio
It is uniformly mixed, then pours in the surface of fresh lotus leaf, then be placed in baking oven and solidified, after taking-up, lotus leaf is removed, i.e.,
PDMS soft template layer has been prepared as template in the dimple nonreentrant surface that the surface of lotus leaf is utilized；
The preparation of the graphene oxide of surface-crosslinked modification: step 2 by weight, takes 35~50 parts of graphene oxide (GO)
It is scattered in 340~420 parts of dehydrated alcohol, the pH to 4~5 that HCl adjusts dispersion liquid is added, then by 2~4wt% silane
230~310 parts of ethanol solution of coupling agent are slowly added dropwise in above-mentioned dispersion liquid, be warming up to 55~65 DEG C carry out reaction 12~
14h, centrifuge separation, solids are successively washed with dehydrated alcohol and deionized water, and surface-crosslinked modification is obtained after vacuum drying
Graphene oxide；The silane coupling agent is selected from KH550, KH560 or KH570；
The preparation of surface-functionalized graphene: step 3 20~35 parts of graphene oxide of surface-crosslinked modification is scattered in
In 250~380 parts of dehydrated alcohol, 60~75 parts of hydrazine hydrate is then added, be warming up to 50~70 DEG C carry out reaction 10~
12h after being centrifugated product, successively after dehydrated alcohol washing, deionized water washing, vacuum drying, obtains surface work
The graphene of energyization；
Step 4, the preparation of hydrophobic heat conducting coating raw material: by weight, by 50~65 parts of matrix resin, photoinitiator 1~3
Part, 5~10 parts of reactive diluent, 3~6 parts of crosslinking agent, surface-functionalized 6~12 parts of graphene be uniformly mixed, obtain hydrophobic
Heat conducting coating raw material；Matrix resin is selected from urethane acrylate and polyethyleneglycol diacrylate according to weight ratio 2:0.5~1
Mixing；The photoinitiator is selected from 2- hydroxy-2-methyl -1- phenyl ketone or 1- hydroxy-cyclohexyl-phenyl ketone；
The reactive diluent is selected from tripropylene glycol diacrylate；The crosslinking agent is selected from five acrylic acid of dipentaerythritol
Ester；
The preparation of hydrophobic heat-conducting layer: step 5 coats hydrophobic heat conducting coating raw material in PET substrate film, then in hydrophobic heat conducting coating
The surface of raw material covers PDMS soft template layer, is placed in 10~60min of irradiation under ultraviolet lamp, then PDMS soft template layer is taken off, sets
4~6h is dried in 40~45 DEG C of baking oven；
Step 6, the preparation of fluorine-containing weathering layer: the hot pressing fluoropolymer layer on the surface for the hydrophobic heat-conducting layer that step 5 obtains.
2. the production method of solar cell backboard according to claim 1, which is characterized in that in the step 1, Gu
Changing temperature is 35~38 DEG C, and curing time is 3~6h.
3. the production method of solar cell backboard according to claim 1, which is characterized in that in the step 5, apply
The thickness covered is 0.1~1mm；The wavelength of ultraviolet light irradiation is 362nm, and luminous intensity is 600~800 μ W/cm2.
4. the production method of solar cell backboard according to claim 1, which is characterized in that in the step 6, contain
Fluoroplymer layer refers to pvdf membrane；The pressure of hot pressing is 0.1~1Mpa, and temperature is 80~110 DEG C.
5. the solar battery back that the production method of solar cell backboard described in Claims 1 to 4 is directly prepared
Plate.
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| CN101537682B (en) * | 2009-03-16 | 2011-06-29 | 浙江工业大学 | Method for preparing superhydrophobic surface by using nano-particles for assisting micromolding |
| WO2012029466A1 (en) * | 2010-08-31 | 2012-03-08 | 三菱樹脂株式会社 | Solar battery cover film for and solar battery module manufactured using same |
| CN104064613B (en) * | 2014-07-14 | 2017-07-11 | 中天光伏材料有限公司 | A kind of heat dissipation type high integrated backboard used for solar batteries and its manufacture method |
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