CN108682710A - A kind of five-layer structure co-extrusion solar cell backboard and preparation method thereof containing PBT - Google Patents
A kind of five-layer structure co-extrusion solar cell backboard and preparation method thereof containing PBT Download PDFInfo
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- CN108682710A CN108682710A CN201810805948.2A CN201810805948A CN108682710A CN 108682710 A CN108682710 A CN 108682710A CN 201810805948 A CN201810805948 A CN 201810805948A CN 108682710 A CN108682710 A CN 108682710A
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- 230000003628 erosive effect Effects 0.000 description 1
- UFRKOOWSQGXVKV-UHFFFAOYSA-N ethene;ethenol Chemical compound C=C.OC=C UFRKOOWSQGXVKV-UHFFFAOYSA-N 0.000 description 1
- 125000004494 ethyl ester group Chemical group 0.000 description 1
- 239000004715 ethylene vinyl alcohol Substances 0.000 description 1
- 125000001153 fluoro group Chemical group F* 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- RPQRDASANLAFCM-UHFFFAOYSA-N oxiran-2-ylmethyl prop-2-enoate Chemical group C=CC(=O)OCC1CO1 RPQRDASANLAFCM-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- DCKVNWZUADLDEH-UHFFFAOYSA-N sec-butyl acetate Chemical compound CCC(C)OC(C)=O DCKVNWZUADLDEH-UHFFFAOYSA-N 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/048—Encapsulation of modules
- H01L31/049—Protective back sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
- B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/306—Resistant to heat
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/552—Fatigue strength
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/554—Wear resistance
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/732—Dimensional properties
- B32B2307/734—Dimensional stability
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2457/00—Electrical equipment
- B32B2457/10—Batteries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2457/00—Electrical equipment
- B32B2457/12—Photovoltaic modules
-
- 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 present invention discloses a kind of five-layer structure co-extrusion solar cell backboard and preparation method thereof containing PBT, belongs to solar cell backboard technical field.It includes outer weathering layer, outer adhesive linkage, substrate layer, interior adhesive linkage and interior weathering layer, and outer weathering layer and substrate layer are fixed together by outer adhesive linkage, and substrate layer and interior weathering layer are fixed together by interior adhesive linkage；Layers of material is melted in different runners using coextrusion process and converges simultaneously direct extrusion molding by the present invention, and operating procedure is simple, is not readily separated and falls off between adhesive linkage.Preparation method of the present invention can not only simplify processing technology, and prepared backboard also has good weatherability, mechanical performance and long-time stability, while organic solvent, environment-friendly and green are not used in preparation process.
Description
Technical field
The invention belongs to solar cell backboard fields, and in particular to a kind of five-layer structure co-extrusion solar-electricity containing PBT
Pond backboard and preparation method thereof.
Background technology
In recent years due to the exhaustion of Global Environmental Problems and fossil fuel, solar energy is as a kind of cleanliness without any pollution, resource
Most abundant regenerative resource and get more and more people's extensive concerning.Solar cell is solar energy can be converted into electric energy
Efficient apparatus.Solar cell is under long-term outdoor wind and weather, the erosion environment of the natural causes such as ultraviolet light, solar energy
Battery back-sheet should use the backboard with excellent weatherability and durability, convenient for protection solar cell, extend its use
Service life.
The solar cell backboard of existing market mainstream has five-layer structure, and outer layer, which uses, has excellent weather resistance and anti-ring
The rodent fluorine material in border；Middle layer selects polyethylene terephthalate（PET）, for improve backboard insulating properties and
Mechanical property；Internal layer is fluorine material or polyolefin layer.But PET crystallization rates are slow, crystallized after there are problems that, it is necessary to by double
Be molded to drawing process, there is also the insufficient defects of barrier property, moreover, fluorine material surface energy is low, promote its surface it is smooth,
The advantages of anti-friction is fabulous, this is both this kind of material and its disadvantage, fluorine material is as outer weathering layer hardly possible and PET base material layer
Bonding, mostly uses polyurethane or EVA binders in a manner of coating by two kinds of Film laminateds in the prior art.This production work
Skill needs first to coat polyurethane or EVA bonding agents to base material layer surface side, after its solidification drying, then is coated to its other side viscous
Connect compound with other film layers after agent, entire complex process, the operation cycle is long, and waving with organic solvent in process of production
Hair pollutes environment.In addition, layers cementing layer is vulnerable under atmospheric environment for a long time, causes interlaminar separation and fall off, make solar energy
Battery back-sheet loses protective effect.In contrast, polybutylene terephthalate (PBT)（PBT）Resin has crystallization rate fast, resistance to
Hot good, water vapor barrier property is good, good dimension stability, the advantages that dielectric strength is high, be used as all the time engineering plastics by
Concern, is widely used in automobile component, electric and electronic industry, in monomer structure more than PET two carbon atoms, molecule
Chain is submissiveer, it is easier to crystallize.
The Patent No. Z201110380482.4 of Ningbo Changyang Technology Co., Ltd. discloses a kind of solar cell backboard
And preparation method thereof, it is multi-layer co-extruded that it for weathering layer, PET is structure enhancement layer which, which uses PETG, EVOH is that barrier layer carries out,
Without using bonding agent, but the weatherability of PETG materials and environment resistant aggressivity be much not as good as fluorine material, while between each layer
It does not use bonding agent under prolonged use, is susceptible to the segregation phenomenon that falls off between layers yet.
The shareholder Hangzhou Fu Mo new materials Science and Technology Co., Ltd. of applicant possesses that application No. is 201010536756.X
Chinese patent, it discloses a kind of material special for polyvinylidene fluoride film, can be used for preparing have excellent weather resistance, low water vapour it is saturating
The polyvinylidene difluoride film for crossing rate, excellent in mechanical performance is applied in solar cell backboard and extraordinary effect can be achieved.
Invention content
The five-layer structure co-extrusion containing PBT that it is an object of the present invention to overcome the shortcomings of the prior art and provide a kind of
Solar cell backboard and preparation method thereof no longer uses traditional coating processes, Neng Gou using melting coextrusion process molding
While ensureing product excellent properties, production cost is reduced, simplifies preparation process, enhances the cementability between each layer, be not easy out
It is now layered or falls off, ensure the long-term weatherability of solar cell backboard, simplify processing process.
To achieve the above object of the invention, the technical solution adopted by the present invention is：
A kind of five-layer structure co-extrusion solar cell backboard containing PBT, which is characterized in that including outer weathering layer, outer adhesive linkage, base
Material layer, interior adhesive linkage and interior weathering layer, outer weathering layer and substrate layer are fixed together by outer adhesive linkage, substrate layer and interior weather-proof
Layer is fixed together by interior adhesive linkage；
The outer weathering layer is modified polyvinilidene fluoride layer, includes 60-75 parts of Kynoar, 5-10 parts of nanometers in parts by weight
Grade filler, 0.5-3.5 parts of flow ability modifying agents, 10-20 parts of reinforced resins, 5-10 parts of inorganic fillers, 0.1-2 parts of thermostabilization auxiliary agents；
The outer adhesive linkage be acrylate-glycidyl ester copolymer layer, ethylene-vinyl acetate copolymer or
It is any in polyurethane；
The substrate layer is modified polybutylene terephthalate (PBT) layer, includes 50-90 parts of poly terephthalic acids in parts by weight
Butanediol ester, 5-30 part nanometer titanium dioxide, 5-40 parts of toughener, 0.1-2 parts of antioxidant；
It is sweet that the interior adhesive linkage is acrylate-glycidyl ester copolymer layer, ethylene-methyl methacrylate shrinks
It is any in grease copolymer layer, ethylene-vinyl acetate copolymer layer, layer of polyurethane；
The interior weathering layer is modified polyvinilidene fluoride layer or modified poly ethylene layer；The modified polyvinilidene fluoride layer is by weight
Number includes：60-75 parts of Kynoar, 5-10 parts of nano-sized fillers, 0.5-3.5 parts of flow ability modifying agents, 10-20 parts of enhancing trees
Fat, 5-10 part inorganic filler, 0.1-2 parts of heat stabilizers；The modified poly ethylene layer includes in parts by weight：65-85 parts linear
Low density polyethylene (LDPE), 10-25 part low density polyethylene (LDPE), 1-5 parts of EVA elastomers, 3-5 parts of titanium dioxides, 0.1-2 parts of antioxidant,
0.1-1 parts of light stabilizers.
When interior weathering layer of the present invention is modified polyvinilidene fluoride layer, interior adhesive linkage is acrylate-methacrylic acid
It is any in glycidyl ester copolymer layer, ethylene-vinyl acetate copolymer layer, layer of polyurethane；The interior weathering layer is to be modified
When polyethylene layer, interior adhesive linkage is acrylate-glycidyl ester copolymer layer, ethylene-methyl methacrylate contracting
It is any in water glyceride copolymer layer, ethylene-vinyl acetate copolymer layer, layer of polyurethane.
In outer weathering layer of the present invention and interior weathering layer, the flow ability modifying agent be phthalic acid ester dimethyl ester,
Phthalic acid ester diethylester, dibutylphthalate, phthalic acid ester dihexyl, phthalic acid ester dioctyl ester,
Phthalic acid ester di-isooctyl, dicyclohexyl phthalate, triethyl phosphate, tributyl phosphate, trioctyl phosphate are any
Kind appoints several combinations.
In outer adhesive linkage of the present invention and interior adhesive linkage, the acrylate is methyl acrylate, ethyl acrylate, third
Olefin(e) acid butyl ester, Isooctyl acrylate monomer, methyl methacrylate, ethyl methacrylate, butyl methacrylate, methacrylic acid
In dimethylaminoethyl it is any or appoint it is several.
In outer weathering layer of the present invention and interior weathering layer, the inorganic filler is silica, titanium dioxide, carbonic acid
Any one of calcium, barium sulfate, zinc sulphide are appointed several；The nano-sized filler is nanometer grade silica and/or nanoscale
Calcium carbonate.
In modified poly ethylene layer of the present invention, antioxidant is antioxidant 1010, irgasfos 168, antioxidant 264, resists
Any in oxygen agent BHT, light stabilizer is in light stabilizer 770, light stabilizer 292, light stabilizer 622LD, light stabilizer 944
It is any.
In outer weathering layer of the present invention and interior weathering layer, the reinforced resin is acrylic resin and/or first
Base acrylic resin.
In outer weathering layer of the present invention and interior weathering layer, the heat stabilizer is dibutyl tin laurate, maleic acid
It is dioctyltin, double（Butyl maleate）It is dibutyl tin, double（Lauryl mercaptan）Dibutyl tin, S, S '-are bis-（Thio Glycolic acid is different
Monooctyl ester）Dibutyl tin, Bis(lauroyloxy)dioctyltin, calcium stearate, magnesium stearate, lithium stearate, zinc stearate, stearic acid
Any one of aluminium, double stearic acid aluminium, calcium laurate, zinc laurate, ricinoleic acid calcium, 2- zinc ethyl hexanoates are appointed several.
In modified polybutylene terephthalate (PBT) layer of the present invention, the toughener is methyl methacrylate-fourth
Styrene terpolymer, Ethylene-butyl acrylate-glycidyl methacrylate terpolymer, maleic anhydride
It is any in grafted ethene-octene copolymer；Antioxidant be antioxidant 1010, irgasfos 168, antioxidant 264, antioxidant BHT,
Any one of anti-oxidant DLTP.
A kind of preparation method of the five-layer structure co-extrusion solar cell backboard containing PBT, which is characterized in that specifically include down
State step：
（1）Using high-speed mixer by Kynoar, nano-sized filler, flow ability modifying agent, reinforced resin, inorganic filler and heat
Under stabilization aid room temperature after mechanical mixture 5-10 minutes, melting extrusion granulation, extrusion temperature are carried out using double screw extruder
200-230 DEG C, screw speed 200-350rpm obtains modified polyvinilidene fluoride pellet, is used as outer weathering layer；
（2）Using high-speed mixer by polybutylene terephthalate (PBT), nanometer titanium dioxide, toughener and antioxidant at normal temperatures
After mechanical mixture 5-10 minutes, melting extrusion granulation, 200-230 DEG C of extrusion temperature are carried out using double screw extruder, screw rod turns
Fast 200-350rpm obtains modified polybutylene terephthalate (PBT) pellet, is used as substrate layer；
（3）When the interior weathering layer is modified polyvinilidene fluoride layer, Kynoar, nanoscale are filled out using high-speed mixer
Mechanical mixture is after 5-10 minutes under material, flow ability modifying agent, reinforced resin, inorganic filler and heat stabilizer room temperature, using twin-screw
Extruder carries out melting extrusion granulation, 200-230 DEG C of extrusion temperature, and screw speed 200-350rpm obtains modified polyvinilidene fluorine second
Alkene pellet；
When the interior weathering layer is modified poly ethylene layer, using high-speed mixer by linear low density polyethylene, low density polyethylene
Alkene, EVA elastomers, titanium dioxide, antioxidant and light stabilizer are after mechanical mixture 5-10 minutes at normal temperatures, using twin-screw extrusion
Machine carries out melting extrusion granulation, and 180-210 DEG C of extrusion temperature obtains modified poly ethylene pellet；
（4）The obtained each layer pellets of step 1-3 are separately added into outer Nian Jie layered material, interior bonding layered material in respective extruder,
Converged in die head by respective runner after fusion plastification and be extruded into laminated film, through chill roll extruding, cooling, traction, trimming,
The five-layer structure co-extrusion solar cell backboard containing PBT is made in winding.
Compared with prior art, the present invention haing the following advantages and effect：
1, select polybutylene terephthalate (PBT) layer as substrate layer, PBT crystallization rates faster, and have excellent heat resistance
Can and fall husky wearability, good stability of the dimension, because solar cell backboard have it is excellent fall husky wearability, dimensional stability and
Heat resistance；
2, outer adhesive linkage and interior adhesive linkage are copolymer layer, dissolve bonding agent without using solvent in preparation process, are also not present
The solvent in later stage volatilizees, and avoids safety and environmental issue that traditional preparation process brings environment；
3, five-layer structure is combined together by way of melting co-extrusion, and adhesive linkage exists with substrate layer, weather-proof layer surface to be melted
And chemical reaction, it is bonded between each layer more secured, the thickness of adhibited layer that is less prone to traditional coating method is irregular, layering falls off
Phenomena such as, the weatherability of product is excellent, can more meet the needs of solar cell backboard product weatherability in a long time, protects
Demonstrate,prove the service efficiency of solar cell；
4, solar cell backboard is prepared using multi-layer co-extruded form, breaks through traditional preparation process, adhesive linkage is avoided to be coated with
With the process of substrate layer, operating procedure is simplified, and each layer thickness of backboard, performance are controllable, it is easy to accomplish extensive, automatic
Change, the production of serialization, production efficiency is high, is a kind of novel solar battery backboard haveing excellent performance, which also has good
Good weatherability, mechanical performance and long-time stability, while organic solvent, environment-friendly and green are not used in preparation process.
Specific implementation mode
Below by embodiment, the present invention is described in further detail, following embodiment be explanation of the invention and
The invention is not limited in following embodiments.
A kind of five-layer structure co-extrusion solar cell backboard containing PBT, including it is outer weathering layer, outer adhesive linkage, substrate layer, interior
Adhesive linkage and interior weathering layer, outer weathering layer and substrate layer are fixed together by outer adhesive linkage, and substrate layer and interior weathering layer pass through
Interior adhesive linkage is fixed together.
Outer weathering layer is modified polyvinilidene fluoride layer, includes 60-75 parts of Kynoar, 5-10 parts of nanometers in parts by weight
Grade filler, 0.5-3.5 parts of flow ability modifying agents, 10-20 parts of reinforced resins, 5-10 parts of inorganic fillers, 0.1-2 parts of thermostabilization auxiliary agents；
Further, any integer of the concrete numerical value of the parts by weight of Kynoar between 60-75；The weight of nano-sized filler
Any integer of the concrete numerical value of number between 5-10；The concrete numerical value of the parts by weight of flow ability modifying agent is 0.1 × A, A's
Any integer of the value range between 5-35；The concrete numerical value of the parts by weight of reinforced resin is any whole between 10-20
Number；Any integer of the concrete numerical value of the parts by weight of inorganic filler between 5-10；The tool of the parts by weight of thermostabilization auxiliary agent
Body numerical value is 0.1 × B, any integer of the value range of B between 1-20.
Outer adhesive linkage be acrylate-glycidyl ester copolymer layer, ethylene-vinyl acetate copolymer or
It is any in polyurethane.
Substrate layer is modified polybutylene terephthalate (PBT) layer, includes 50-90 parts of poly terephthalic acids in parts by weight
Butanediol ester, 5-30 part nanometer titanium dioxide, 5-40 parts of toughener, 0.1-2 parts of antioxidant；Further, poly terephthalic acid fourth
Any integer of the concrete numerical value of the parts by weight of diol ester between 50-90；The specific number of the parts by weight of nanometer titanium dioxide
Any integer being worth between 5-30；Any integer of the concrete numerical value of the parts by weight of toughener between 5-40；Antioxidant
The concrete numerical values of parts by weight be 0.1 × C, any integer of the value range of C between 1-20.
It is sweet that interior adhesive linkage is acrylate-glycidyl ester copolymer layer, ethylene-methyl methacrylate shrinks
It is any in grease copolymer layer, ethylene-vinyl acetate copolymer layer, layer of polyurethane.
Interior weathering layer is modified polyvinilidene fluoride layer or modified poly ethylene layer；Modified polyvinilidene fluoride layer wraps in parts by weight
It includes：60-75 parts of Kynoar, 5-10 parts of nano-sized fillers, 0.5-3.5 parts of flow ability modifying agents, 10-20 parts of reinforced resins, 5-
10 parts of inorganic fillers, 0.1-2 parts of heat stabilizers；Modified poly ethylene layer includes in parts by weight：65-85 parts of linear low density polyethylenes
Alkene, 10-25 part low density polyethylene (LDPE), 1-5 parts of EVA elastomers, 3-5 parts of titanium dioxides, 0.1-2 parts of antioxidant, 0.1-1 parts of light are stablized
Agent.Further, in modified polyvinilidene fluoride layer, concrete numerical value the appointing between 60-75 of the parts by weight of Kynoar
One integer；Any integer of the concrete numerical value of the parts by weight of nano-sized filler between 5-10；The parts by weight of flow ability modifying agent
Several concrete numerical values is 0.1 × E, any integer of the value range of E between 5-35；The parts by weight of reinforced resin it is specific
Any integer of the numerical value between 10-20；Any integer of the concrete numerical value of the parts by weight of inorganic filler between 5-10；Heat
The concrete numerical value of the parts by weight of stabilizer is 0.1 × F, any integer of the value range of F between 1-20.Further,
In modified poly ethylene layer, any integer of the concrete numerical values of the parts by weight of linear low density polyethylene between 65-85；It is low close
Spend any integer of the concrete numerical value of the parts by weight of polyethylene between 10-25；The specific number of the parts by weight of EVA elastomers
Any integer being worth between 1-5；Any integer of the concrete numerical value of the parts by weight of titanium dioxide between 3-5；Antioxidant
The concrete numerical value of parts by weight is 0.1 × G, any integer of the value range of G between 1-20；The parts by weight of light stabilizer
Concrete numerical value be 0.1 × H, any integer of the value range of H between 1-10.
When interior weathering layer is modified polyvinilidene fluoride layer, interior adhesive linkage is acrylate-glycidyl ester
It is any in copolymer layer, ethylene-vinyl acetate copolymer layer, layer of polyurethane；It is interior viscous when interior weathering layer is modified poly ethylene layer
It is acrylate-glycidyl ester copolymer layer, ethylene-methyl methacrylate glycidyl ester copolymer to connect layer
It is any in layer, ethylene-vinyl acetate copolymer layer, layer of polyurethane.
In outer weathering layer and interior weathering layer, the flow ability modifying agent is phthalic acid ester dimethyl ester, phthalic acid
Ester diethylester, dibutylphthalate, phthalic acid ester dihexyl, phthalic acid ester dioctyl ester, phthalic acid
Ester di-isooctyl, dicyclohexyl phthalate, triethyl phosphate, tributyl phosphate, trioctyl phosphate are any or appoint several
Combination.
In outer adhesive linkage and interior adhesive linkage, the acrylate is selected from methyl acrylate, ethyl acrylate, acrylic acid fourth
Ester, Isooctyl acrylate monomer, methyl methacrylate, ethyl methacrylate, butyl methacrylate, dimethylaminoethyl acrylate methyl ammonia
In base ethyl ester it is any or appoint it is several.
In outer weathering layer and interior weathering layer, the inorganic filler is silica, titanium dioxide, calcium carbonate, barium sulfate, sulphur
Change any one of zinc or appoints several；The nano-sized filler is nanometer grade silica and/or nanometer grade calcium carbonate.
In modified poly ethylene layer, antioxidant is any in antioxidant 1010, irgasfos 168, antioxidant 264, antioxidant BHT
Kind, light stabilizer is any in light stabilizer 770, light stabilizer 292, light stabilizer 622LD, light stabilizer 944.
In outer weathering layer and interior weathering layer, the reinforced resin is acrylic resin and/or methacrylate
Resinoid.
In outer weathering layer and interior weathering layer, the heat stabilizer be dibutyl tin laurate, maleic acid dioctyltin,
It is double（Butyl maleate）It is dibutyl tin, double（Lauryl mercaptan）Dibutyl tin, S, S '-are bis-（The thio different monooctyl ester of Glycolic acid）Dibutyl
Tin, Bis(lauroyloxy)dioctyltin, calcium stearate, magnesium stearate, lithium stearate, zinc stearate, aluminum stearate, double stearic acid
Any one of aluminium, calcium laurate, zinc laurate, ricinoleic acid calcium, 2- zinc ethyl hexanoates are appointed several.
In modified polybutylene terephthalate (PBT) layer, the toughener is methyl methacrylate-butadiene-styrene
Terpolymer, Ethylene-butyl acrylate-glycidyl methacrylate terpolymer, maleic anhydride grafted ethene-are pungent
It is any in alkene copolymer；Antioxidant is antioxidant 1010, irgasfos 168, antioxidant 264, antioxidant BHT, anti-oxidant DLTP
Any one of.
Vinyl acetate content is 35-55% in ethylene-vinyl acetate copolymer.
In modified polyvinilidene fluoride layer, the molecular weight of the Kynoar is 20-100 ten thousand.
In modified polybutylene terephthalate (PBT) layer, the inherent viscosity of the polybutylene terephthalate (PBT) is 0.5-
1.3dL/g。
Acrylate-glycidyl ester copolymer and Kynoar thermodynamic compatibility, methacrylic acid
Epoxy-functional is carried in ethylene oxidic ester, and functional group reactions, therefore gained can occur with polybutylene terephthalate (PBT)
Adhesive layer externally weathering layer Kynoar and substrate layer polybutylene terephthalate (PBT) layer can play stronger bonding and make
With not easily to fall off.
Since ethylene-vinyl acetate copolymer self cohesion is big, melt surface tension is small, has good adhesiveness,
Kynoar and polybutylene terephthalate (PBT) can be bonded together.
Due to containing polar group in polyurethane structural, hydrogen bond action can be generated between glued material makes bonding more
Securely.
A kind of preparation method of five-layer structure co-extrusion solar cell backboard according to claim containing PBT, feature exist
In specifically including following step：
（1）Using high-speed mixer by Kynoar, nano-sized filler, flow ability modifying agent, reinforced resin, inorganic filler and heat
Under stabilization aid room temperature after mechanical mixture 5-10 minutes, melting extrusion granulation, extrusion temperature are carried out using double screw extruder
200-230 DEG C, screw speed 200-350rpm obtains modified polyvinilidene fluoride pellet, is used as outer weathering layer；
（2）Using high-speed mixer by polybutylene terephthalate (PBT), nanometer titanium dioxide, toughener and antioxidant at normal temperatures
After mechanical mixture 5-10 minutes, melting extrusion granulation, 200-230 DEG C of extrusion temperature are carried out using double screw extruder, screw rod turns
Fast 200-350rpm obtains modified polybutylene terephthalate (PBT) pellet, is used as substrate layer；
（3）When the interior weathering layer is modified polyvinilidene fluoride layer, Kynoar, nanoscale are filled out using high-speed mixer
Mechanical mixture is after 5-10 minutes under material, flow ability modifying agent, reinforced resin, inorganic filler and heat stabilizer room temperature, using twin-screw
Extruder carries out melting extrusion granulation, 200-230 DEG C of extrusion temperature, and screw speed 200-350rpm obtains modified polyvinilidene fluorine second
Alkene pellet；
When the interior weathering layer is modified poly ethylene layer, using high-speed mixer by linear low density polyethylene, low density polyethylene
Alkene, EVA elastomers, titanium dioxide, antioxidant and light stabilizer are after mechanical mixture 5-10 minutes at normal temperatures, using twin-screw extrusion
Machine carries out melting extrusion granulation, and 180-210 DEG C of extrusion temperature obtains modified poly ethylene pellet；
（4）The obtained each layer pellets of step 1-3 are separately added into outer Nian Jie layered material, interior bonding layered material in respective extruder,
Converged in die head by respective runner after fusion plastification and be extruded into laminated film, through chill roll extruding, cooling, traction, trimming,
The five-layer structure co-extrusion solar cell backboard containing PBT is made in winding.
Embodiment：
Nano-sized filler is nano-calcium carbonate in modified polyvinilidene fluoride layer formula in following embodiments, and flow ability modifying agent is adjacent benzene
Diformazan dioctyl phthalate（DOP）, reinforced resin is a kind of polymethyl methacrylate resin and a kind of combination of acrylic resin, inorganic
Filler is titanium dioxide（TiO2）, heat stabilizer is dibutyitin maleate（DBTM）With the combination of calcium stearate.Modified poly- pair
Toughener is methyl methacrylate-butadiene-styrene terpolymer in benzene dicarboxylic acid butanediol ester formula, and antioxidant is
Antioxidant 1010.Antioxidant is antioxidant 1010 in modified poly ethylene formula, and light stabilizer is light stabilizer 770.
Embodiment 1
A kind of five-layer structure co-extrusion solar cell backboard containing PBT, specific preparation process are as follows：
（1）Using high-speed mixer by parts by weight 75 parts of Kynoar, 5 parts of nano-calcium carbonates, 3.5 parts of DOP, 4 parts
Methacrylic resin, 6 parts of acrylic resins, 5 parts of TiO2, 1 part of DBTM, 0.5 part of calcium stearate mechanical mixture 5- at normal temperatures
After ten minutes, melting extrusion being carried out using double screw extruder, extrusion temperature is 200-230 DEG C, screw speed 200-350rpm,
It is granulated after extrusion and modified polyvinilidene fluoride pellet is made；
（2）Using high-speed mixer by 50 parts of polybutylene terephthalate (PBT)s in parts by weight, 20 parts of nanometer titanium dioxides, 29
Mechanical mixture 5-10 points at normal temperatures of part methyl methacrylate-butadiene-styrene terpolymer and 1 part of antioxidant 1010
Zhong Hou carries out melting extrusion using double screw extruder, and extrusion temperature is 200-230 DEG C, screw speed 200-350rpm, is squeezed out
It is granulated afterwards and modified polybutylene terephthalate (PBT) pellet is made；
（3）It is respectively modified polyvinilidene fluoride layer grain according to outer weathering layer, outer adhesive linkage, substrate layer, interior adhesive linkage, interior weathering layer
Material, glycidyl methacrylate-methylmethacrylate copolymer material, modified polybutylene terephthalate (PBT) material, first
Base glycidyl acrylate-methylmethacrylate copolymer material, modified polyvinilidene fluoride layer pellet, each layered material is added respectively
Enter in respective extruder, is converged in die head by respective runner after fusion plastification and be extruded into laminated film, squeezed through chill roll,
The five-layer structure co-extrusion solar cell backboard containing PBT is made in cooling, traction, trimming, winding.
Embodiment 2
A kind of five-layer structure co-extrusion solar cell backboard containing PBT, specific preparation process are as follows：
（1）Using high-speed mixer by parts by weight 75 parts of Kynoar, 5 parts of nano-calcium carbonates, 3.5 parts of DOP, 4 parts
Methacrylic resin, 6 parts of acrylic resins, 5 parts of TiO2, 1 part of DBTM, 0.5 part of calcium stearate mechanical mixture 5- at normal temperatures
After ten minutes, melting extrusion being carried out using double screw extruder, extrusion temperature is 200-230 DEG C, screw speed 200-350rpm,
It is granulated after extrusion and modified polyvinilidene fluoride layer pellet is made；
（2）Using high-speed mixer by 50 parts of polybutylene terephthalate (PBT)s in parts by weight, 20 parts of nanometer titanium dioxides, 29
Mechanical mixture 5-10 points at normal temperatures of part methyl methacrylate-butadiene-styrene terpolymer and 1 part of antioxidant 1010
Zhong Hou carries out melting extrusion using double screw extruder, and extrusion temperature is 200-230 DEG C, screw speed 200-350rpm, is squeezed out
It is granulated afterwards and modified polybutylene terephthalate (PBT) pellet is made；
（3）Using high-speed mixer by parts by weight 70 parts of linear low density polyethylene, 20 parts of low density polyethylene (LDPE)s, 5 parts
EVA elastomers, 3.5 parts of titanium dioxides, 1 part of antioxidant 1010,0.5 part of light stabilizer 7700 mechanical mixture 5-10 minutes at normal temperatures
Afterwards, melting extrusion is carried out using double screw extruder, extrusion temperature is 180-210 DEG C, screw speed 180-300rpm, after extrusion
It is granulated and modified poly ethylene pellet is made；
（4）It is respectively modified polyvinilidene fluoride layer grain according to outer weathering layer, outer adhesive linkage, substrate layer, interior adhesive linkage, interior weathering layer
Material, glycidyl methacrylate-methylmethacrylate copolymer material, modified polybutylene terephthalate (PBT) material, second
Alkene-glycidyl methacrylate copolymer material, modified poly ethylene pellet, each layered material is separately added into respective extruder,
Converged in die head by respective runner after fusion plastification and be extruded into laminated film, through chill roll extruding, cooling, traction, trimming,
The five-layer structure co-extrusion solar cell backboard containing PBT is made in winding.
Furthermore, it is necessary to illustrate, the specific embodiment described in this specification, the shape of parts is named
Claiming etc. can be different, described in this specification above content is only to structure of the invention example explanation.It is all according to
The equivalence changes or simple change done according to the structure, feature and principle described in inventional idea of the present invention, are included in this hair
In the protection domain of bright patent.Those skilled in the art can do described specific embodiment various
The modify or supplement or adopt similar mode of various kinds substitutes, and without departing from structure of the invention or surmounts present claims
Range defined in book, is within the scope of protection of the invention.
Claims (10)
1. a kind of five-layer structure co-extrusion solar cell backboard containing PBT, which is characterized in that including outer weathering layer, outer adhesive linkage,
Substrate layer, interior adhesive linkage and interior weathering layer, outer weathering layer and substrate layer are fixed together by outer adhesive linkage, substrate layer and Nei Nai
Layer is waited to be fixed together by interior adhesive linkage；
The outer weathering layer is modified polyvinilidene fluoride layer, includes 60-75 parts of Kynoar, 5-10 parts of nanometers in parts by weight
Grade filler, 0.5-3.5 parts of flow ability modifying agents, 10-20 parts of reinforced resins, 5-10 parts of inorganic fillers, 0.1-2 parts of thermostabilization auxiliary agents；
The outer adhesive linkage be acrylate-glycidyl ester copolymer layer, ethylene-vinyl acetate copolymer or
It is any in polyurethane；
The substrate layer is modified polybutylene terephthalate (PBT) layer, includes 50-90 parts of poly terephthalic acids in parts by weight
Butanediol ester, 5-30 part nanometer titanium dioxide, 5-40 parts of toughener, 0.1-2 parts of antioxidant；
It is sweet that the interior adhesive linkage is acrylate-glycidyl ester copolymer layer, ethylene-methyl methacrylate shrinks
It is any in grease copolymer layer, ethylene-vinyl acetate copolymer layer, layer of polyurethane；
The interior weathering layer is modified polyvinilidene fluoride layer or modified poly ethylene layer；The modified polyvinilidene fluoride layer is by weight
Number includes：60-75 parts of Kynoar, 5-10 parts of nano-sized fillers, 0.5-3.5 parts of flow ability modifying agents, 10-20 parts of enhancing trees
Fat, 5-10 part inorganic filler, 0.1-2 parts of heat stabilizers；The modified poly ethylene layer includes in parts by weight：65-85 parts linear
Low density polyethylene (LDPE), 10-25 part low density polyethylene (LDPE), 1-5 parts of EVA elastomers, 3-5 parts of titanium dioxides, 0.1-2 parts of antioxidant,
0.1-1 parts of light stabilizers.
2. the five-layer structure co-extrusion solar cell backboard according to claim 1 containing PBT, which is characterized in that in described
When weathering layer is modified polyvinilidene fluoride layer, interior adhesive linkage is acrylate-glycidyl ester copolymer layer, second
It is any in alkene-acetate ethylene copolymer layer, layer of polyurethane；When the interior weathering layer is modified poly ethylene layer, interior adhesive linkage is
Acrylate-glycidyl ester copolymer layer, ethylene-methyl methacrylate glycidyl ester copolymer layer, ethylene-
It is any in acetate ethylene copolymer layer, layer of polyurethane.
3. the five-layer structure co-extrusion solar cell backboard according to claim 1 containing PBT, which is characterized in that described outer
In weathering layer and interior weathering layer, the flow ability modifying agent is phthalic acid ester dimethyl ester, phthalic acid ester diethylester, neighbour
Phthalic acid ester dibutyl ester, phthalic acid ester dihexyl, phthalic acid ester dioctyl ester, phthalic acid ester di-isooctyl,
Dicyclohexyl phthalate, triethyl phosphate, tributyl phosphate, trioctyl phosphate are any or appoint several combinations.
4. the five-layer structure co-extrusion solar cell backboard according to claim 1 containing PBT, which is characterized in that described outer
In adhesive linkage and interior adhesive linkage, the acrylate is that methyl acrylate, ethyl acrylate, butyl acrylate, acrylic acid are different pungent
It is any in ester, methyl methacrylate, ethyl methacrylate, butyl methacrylate, dimethylaminoethyl methacrylate
Kind is appointed several.
5. five-layer structure co-extrusion solar cell backboard according to claim 1, it is characterised in that：The outer weathering layer and
In interior weathering layer, the inorganic filler is any one of silica, titanium dioxide, calcium carbonate, barium sulfate, zinc sulphide or appoints
It is several；The nano-sized filler is nanometer grade silica and/or nanometer grade calcium carbonate.
6. five-layer structure co-extrusion solar cell backboard according to claim 1, it is characterised in that：The poly- second of the modification
In alkene layer, antioxidant is any in antioxidant 1010, irgasfos 168, antioxidant 264, antioxidant BHT, and light stabilizer is light
It is any in stabilizer 770, light stabilizer 292, light stabilizer 622LD, light stabilizer 944.
7. five-layer structure co-extrusion solar cell backboard according to claim 1, it is characterised in that：The outer weathering layer and
In interior weathering layer, the reinforced resin is acrylic resin and/or methacrylate-based resin.
8. five-layer structure co-extrusion solar cell backboard according to claim 1, it is characterised in that：The outer weathering layer and
In interior weathering layer, the heat stabilizer is dibutyl tin laurate, maleic acid dioctyltin, double（Butyl maleate）Two
It is butyl tin, double（Lauryl mercaptan）Dibutyl tin, S, S '-are bis-（The thio different monooctyl ester of Glycolic acid）Dibutyl tin, tin dilaurate two are just pungent
Ji Xi, calcium stearate, magnesium stearate, lithium stearate, zinc stearate, aluminum stearate, double stearic acid aluminium, calcium laurate, lauric acid
Any one of zinc, ricinoleic acid calcium, 2- zinc ethyl hexanoates are appointed several.
9. five-layer structure co-extrusion solar cell backboard according to claim 1, it is characterised in that：The modification is poly- to benzene
In dioctyl phthalate butanediol ester layer, the toughener is methyl methacrylate-butadiene-styrene terpolymer, ethylene-the third
It is any in olefin(e) acid butyl ester-glycidyl methacrylate terpolymer, maleic anhydride grafted ethene-octene copolymer；
Antioxidant is any one of antioxidant 1010, irgasfos 168, antioxidant 264, antioxidant BHT, anti-oxidant DLTP.
10. a kind of five-layer structure co-extrusion solar battery back containing PBT according to any one of claim 1-9 claims
The preparation method of plate, which is characterized in that specifically include following step：
（1）Using high-speed mixer by Kynoar, nano-sized filler, flow ability modifying agent, reinforced resin, inorganic filler and heat
Under stabilization aid room temperature after mechanical mixture 5-10 minutes, melting extrusion granulation, extrusion temperature are carried out using double screw extruder
200-230 DEG C, screw speed 200-350rpm obtains modified polyvinilidene fluoride pellet, is used as outer weathering layer；
（2）Using high-speed mixer by polybutylene terephthalate (PBT), nanometer titanium dioxide, toughener and antioxidant at normal temperatures
After mechanical mixture 5-10 minutes, melting extrusion granulation, 200-230 DEG C of extrusion temperature are carried out using double screw extruder, screw rod turns
Fast 200-350rpm obtains modified polybutylene terephthalate (PBT) pellet, is used as substrate layer；
（3）When the interior weathering layer is modified polyvinilidene fluoride layer, Kynoar, nanoscale are filled out using high-speed mixer
Mechanical mixture is after 5-10 minutes under material, flow ability modifying agent, reinforced resin, inorganic filler and heat stabilizer room temperature, using twin-screw
Extruder carries out melting extrusion granulation, 200-230 DEG C of extrusion temperature, and screw speed 200-350rpm obtains modified polyvinilidene fluorine second
Alkene pellet；
When the interior weathering layer is modified poly ethylene layer, using high-speed mixer by linear low density polyethylene, low density polyethylene
Alkene, EVA elastomers, titanium dioxide, antioxidant and light stabilizer are after mechanical mixture 5-10 minutes at normal temperatures, using twin-screw extrusion
Machine carries out melting extrusion granulation, and 180-210 DEG C of extrusion temperature obtains modified poly ethylene pellet；
（4）The obtained each layer pellets of step 1-3 are separately added into outer Nian Jie layered material, interior bonding layered material in respective extruder,
Converged in die head by respective runner after fusion plastification and be extruded into laminated film, through chill roll extruding, cooling, traction, trimming,
The five-layer structure co-extrusion solar cell backboard containing PBT is made in winding.
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