CN114685751A - Compound, preparation method thereof and photovoltaic module - Google Patents
Compound, preparation method thereof and photovoltaic module Download PDFInfo
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- CN114685751A CN114685751A CN202210381899.0A CN202210381899A CN114685751A CN 114685751 A CN114685751 A CN 114685751A CN 202210381899 A CN202210381899 A CN 202210381899A CN 114685751 A CN114685751 A CN 114685751A
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- photovoltaic module
- isocyanate
- fluorocarbon
- fluorocarbon resin
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- 150000001875 compounds Chemical class 0.000 title claims abstract description 54
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 claims abstract description 15
- 238000001962 electrophoresis Methods 0.000 claims abstract description 8
- 238000005507 spraying Methods 0.000 claims abstract description 7
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 claims description 91
- 239000011347 resin Substances 0.000 claims description 53
- 229920005989 resin Polymers 0.000 claims description 52
- 239000004814 polyurethane Substances 0.000 claims description 50
- 229920002635 polyurethane Polymers 0.000 claims description 50
- 239000012948 isocyanate Substances 0.000 claims description 43
- 150000002513 isocyanates Chemical class 0.000 claims description 26
- -1 aliphatic isocyanate Chemical class 0.000 claims description 18
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 15
- 239000002033 PVDF binder Substances 0.000 claims description 13
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 12
- 238000006116 polymerization reaction Methods 0.000 claims description 11
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 10
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 claims description 9
- 239000005057 Hexamethylene diisocyanate Substances 0.000 claims description 7
- 125000000524 functional group Chemical group 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 6
- 239000005058 Isophorone diisocyanate Substances 0.000 claims description 5
- 238000004132 cross linking Methods 0.000 claims description 5
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 5
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 4
- KORSJDCBLAPZEQ-UHFFFAOYSA-N dicyclohexylmethane-4,4'-diisocyanate Chemical compound C1CC(N=C=O)CCC1CC1CCC(N=C=O)CC1 KORSJDCBLAPZEQ-UHFFFAOYSA-N 0.000 claims description 4
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims 4
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 description 15
- 238000000576 coating method Methods 0.000 description 15
- 239000000463 material Substances 0.000 description 11
- 230000007797 corrosion Effects 0.000 description 7
- 238000005260 corrosion Methods 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 150000003839 salts Chemical class 0.000 description 6
- 239000007921 spray Substances 0.000 description 5
- PRPAGESBURMWTI-UHFFFAOYSA-N [C].[F] Chemical class [C].[F] PRPAGESBURMWTI-UHFFFAOYSA-N 0.000 description 4
- 239000003292 glue Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000006750 UV protection Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000000049 pigment Substances 0.000 description 3
- 238000010248 power generation Methods 0.000 description 3
- 239000011253 protective coating Substances 0.000 description 3
- 230000002829 reductive effect Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000013589 supplement Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000003086 colorant Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 229920005749 polyurethane resin Polymers 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 241000269913 Pseudopleuronectes americanus Species 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000033444 hydroxylation Effects 0.000 description 1
- 238000005805 hydroxylation reaction Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 239000005056 polyisocyanate Substances 0.000 description 1
- 229920001228 polyisocyanate Polymers 0.000 description 1
- 239000011527 polyurethane coating Substances 0.000 description 1
- 230000004224 protection Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/62—Polymers of compounds having carbon-to-carbon double bonds
- C08G18/6275—Polymers of halogen containing compounds having carbon-to-carbon double bonds; halogenated polymers of compounds having carbon-to-carbon double bonds
- C08G18/6279—Polymers of halogen containing compounds having carbon-to-carbon double bonds; halogenated polymers of compounds having carbon-to-carbon double bonds containing fluorine atoms
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
-
- 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
Abstract
The application provides a compound, a preparation method thereof and a photovoltaic module, and relates to the technical field of photovoltaics. Disclosed is a compound that can be used for electrophoresis or spray coating on the surface of a photovoltaic module, the compound is represented by formula I; related methods for preparing the compounds are also disclosed. In formula I, each substituent is the same as defined in the specification. The compound is electrophoresed or sprayed on the surface of the photovoltaic module, so that the appearance uniformity of the photovoltaic module is improved, and the service life of the photovoltaic module can be prolonged.
Description
Technical Field
The invention relates to the technical field of photovoltaics, in particular to a compound, a preparation method thereof and a photovoltaic module.
Background
With the development of the times, the application of the photovoltaic module is more and more extensive, and the requirements of customers on the corrosion resistance, the service life, the aesthetic degree and the like of the photovoltaic module are higher and higher, and the photovoltaic module provided in the prior art is very easy to have the conditions of surface corrosion, surface part falling and the like after being used for a plurality of years in a natural environment, so that the aesthetic degree of the photovoltaic module is reduced, and meanwhile, the condition that part of the service functions of the photovoltaic module are damaged exists, so that the service life of the photovoltaic module is shorter.
Therefore, it is highly desirable to provide a material with superior weather resistance and ensuring that the photovoltaic module does not fade for more than 20 years, so as to improve the corrosion resistance, service life, aesthetic appearance and the like of the photovoltaic module.
Disclosure of Invention
In view of the above, the invention provides a compound, a preparation method thereof and a photovoltaic module, which are used for solving the problems of low corrosion resistance, short service life, insufficient aesthetic degree and the like of the photovoltaic module.
In a first aspect, the present application provides a compound having the chemical structure shown in formula I,
wherein R in the formula I is a non-functional group in aliphatic isocyanate,
and a, b, c and d are polymerization degrees, wherein a is c, a ranges from any integer of 10 to 1000, and b and d range from any integer of 1000 to 10000.
In a second aspect, the present application provides a process for the preparation of a compound according to the above, comprising:
providing a fluorocarbon resin;
adding concentrated sulfuric acid and hydrogen peroxide into the fluorocarbon resin to prepare at least partially hydroxylated fluorocarbon resin;
mixing the partially hydroxylated fluorocarbon resin with isocyanate to prepare fluorocarbon type polyurethane; the fluorocarbon polyurethane is the compound.
Optionally, wherein:
the partially hydroxylated fluorocarbon resin is reacted with an isocyanate according to the isocyanate group: hydroxyl group 1-1.1: 1, and mixing.
Optionally, wherein:
the fluorocarbon resin is polyvinylidene fluoride, and the isocyanate is aliphatic isocyanate.
Optionally, wherein:
the aliphatic isocyanate comprises any one of hexamethylene diisocyanate, dicyclohexylmethane-4, 4' -diisocyanate and isophorone diisocyanate.
Optionally, wherein:
mixing the partially hydroxylated fluorocarbon resin with isocyanate, specifically:
and (3) carrying out cross-linking polymerization reaction on the partially hydroxylated fluorocarbon resin and the isocyanate.
Optionally, wherein:
the reaction equation in the preparation process of the compound is as follows:
wherein R is a non-functional group in the aliphatic isocyanate,
n, x, y, a, b, c and d are all polymerization degrees, a is equal to c, n, x and a are all integers in the range of 10 to 1000, and y, b and d are all integers in the range of 1000 to 10000.
In a third aspect, the present application provides a photovoltaic module comprising: a frame and a back plate;
the frame is wrapped around the photovoltaic module;
the compound of claim 1 disposed on a surface of at least one of the backing plates of the bezel.
Optionally, wherein:
the compound is arranged on the surface of at least one of the frame and the back plate in an electrophoresis or spraying mode.
Optionally, wherein:
the photovoltaic component is a black component, and the compound is sprayed on the surface of the frame.
Compared with the prior art, the compound, the preparation method thereof and the photovoltaic module provided by the invention at least realize the following beneficial effects:
the application provides a compound, a preparation method thereof and a photovoltaic module, and particularly provides a compound, wherein the compound is fluorocarbon polyurethane mainly prepared from fluorocarbon resin and isocyanate, and the fluorocarbon polyurethane can be coated on the surface of the photovoltaic module; because this fluorine-carbon type polyurethane has superstrong salt spray resistant characteristic, resistant ultraviolet characteristic, super weatherability, consequently can protect photovoltaic module's preparation material not receive the erosion of environment, be favorable to improving the maintenance life who coats the surface colour of photovoltaic module of this fluorine-carbon type polyurethane, improve photovoltaic module's service life.
Of course, it is not necessary for any product in which the present invention is practiced to achieve all of the above-described technical effects simultaneously.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a flow chart of a method for preparing a compound provided in the examples herein;
fig. 2 is a schematic structural diagram of a photovoltaic module according to an embodiment of the present application.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
The photovoltaic module provided in the prior art is very easy to corrode the surface and partially fall off the surface after being used in a natural environment for a plurality of years, so that the attractiveness of the photovoltaic module is reduced, and the service life of the photovoltaic module is short due to the fact that partial use functions of the photovoltaic module are damaged.
In addition, the aesthetic requirements of customers for photovoltaic modules are also increasing, for example, customers need to make photovoltaic modules black. The conventional treatment method is to cover the surface of the component by using a black glue film or coating black pigment on the surface of the component; however, the black component formed by the method is not a complete full black surface, so that the overall effect is influenced; or the black coating can be peeled off along with the lapse of time, and the metal bottom color is exposed, thereby affecting the aesthetic degree.
In view of the above, the invention provides a compound, a preparation method thereof and a photovoltaic module, which are used for solving the problems of low corrosion resistance, short service life, insufficient aesthetic degree and the like of the photovoltaic module.
The application provides a compound, the compound has a chemical structure shown in a formula I,
wherein R in the formula I is a non-functional group in aliphatic isocyanate,
and a, b, c and d are polymerization degrees, wherein a is c, a ranges from any integer of 10 to 1000, and b and d range from any integer of 1000 to 10000.
Specifically, the application provides a compound, and the chemical formula of the compound is shown as the formula I. It is added that the compound can be called fluorocarbon polyurethane, and when the compound is used as a coating, for example, the weather resistance of photovoltaic modules, wind driven generators and the like under the environment of C5 (high-salinity coastal or offshore areas) can be ensured for more than 20 years, thereby improving the service life of the photovoltaic modules, the wind driven generators and the like.
The compound (fluorocarbon type polyurethane) provided by the application has the characteristic of salt fog resistance; the coating also has super-strong ultraviolet resistance, and can have super-weather resistance when being used as a protective coating on the surfaces of iron, steel and composite materials, so that the materials can be protected from being corroded by the environment; and the preparation material required by the compound (fluorocarbon type polyurethane) is relatively cheap and easy to obtain, the cost required by preparing the compound is low, and the trend and the requirement of cost reduction of photovoltaic and wind power industries are met.
Fig. 1 is a flow chart of a method for preparing a compound according to an embodiment of the present invention, and referring to fig. 1, the present invention further provides a method for preparing a compound, including:
102, adding concentrated sulfuric acid and hydrogen peroxide into fluorocarbon resin to prepare at least partially hydroxylated fluorocarbon resin;
103, mixing the partially hydroxylated fluorocarbon resin with isocyanate to prepare fluorocarbon type polyurethane; the fluorocarbon polyurethane is a compound.
Specifically, the application provides a preparation method of a compound, wherein the compound is the fluorocarbon polyurethane; the preparation method comprises the following steps 101, 102 and 103; step 101 is to provide a fluorocarbon resin, the type of the fluorocarbon resin is not specifically limited in the present application, and a user can select the specific type of the fluorocarbon resin according to the requirement; then, step 102, adding a concentrated sulfuric acid solution and hydrogen peroxide into the fluorocarbon resin obtained in step 101, thereby achieving hydroxylation of the fluorocarbon resin to obtain at least partially hydroxylated fluorocarbon resin; before coating photovoltaic modules and the like, the partially hydroxylated fluorocarbon resin prepared in step 102 is mixed with any isocyanate in step 103 to obtain the compound provided by the present application, namely, fluorocarbon type polyurethane.
It should be noted that, the concentrated sulfuric acid solution used in step 102 may specifically be 98% concentrated sulfuric acid, and the hydrogen peroxide used may specifically be 30% H2O2(ii) a However, the present application is not limited thereto, and the concentrated sulfuric acid solution and the hydrogen peroxide may be adjusted by the user according to the requirement as long as the partially hydroxylated fluorocarbon resin can be successfully prepared.
Alternatively, the partially hydroxylated fluorocarbon resin is reacted with an isocyanate in the following isocyanate group: hydroxyl group 1-1.1: 1, and mixing.
In particular, before applying the compound to the surface of the material, the present application provides an alternative arrangement in which the partially hydroxylated PVDF is reacted with an aliphatic isocyanate (any of HDI, HMDI, IPDI) in a ratio NCO: OH (i.e. polyurethane R value) of 1 to 1.1: 1 to obtain the compound provided by the application, namely the fluorocarbon type polyurethane. Wherein NCO is isocyanate group, OH is hydroxyl group.
Optionally, the fluorocarbon resin is specifically polyvinylidene fluoride and the isocyanate is specifically aliphatic isocyanate.
In particular, the present application provides an alternative type of fluorocarbon resin is polyvinylidene fluoride (PVDF), which has the chemical formula — (C)2H2F2)n-。
When the fluorocarbon resin is PVDF, the step 102 is to slowly add concentrated sulfuric acid and H into the PVDF resin2O2PVDF, concentrated sulfuric acid and H are adjusted according to the required hydroxyl value2O2To obtain partially hydroxylated PVDF.
The application provides a type that isocyanate can select is aliphatic isocyanate, and the addition of aliphatic isocyanate can make the fluorocarbon type polyurethane of finally making have tough and tough wear-resisting, resistant chemical corrosion, can make fluorocarbon type polyurethane's pliability good, easily adhere to various substrates moreover.
It is also necessary to supplement that an alternative type of isocyanate is provided by the present application as an aliphatic polyisocyanate. It should be added that the selectable types of the isocyanate are not specifically limited in the present application, and the user can make corresponding adjustments according to actual needs.
Alternatively, the aliphatic isocyanate comprises any one of hexamethylene diisocyanate, dicyclohexylmethane-4, 4' -diisocyanate, isophorone diisocyanate.
Specifically, the present application provides an aliphatic isocyanate selectable type is any one of Hexamethylene Diisocyanate (HDI), dicyclohexylmethane-4, 4' -Diisocyanate (HMDI), Isophorone Diisocyanate (IPDI); wherein HDI has a molecular formula of C8H12N2O2HMDI having the formula C15H22N2O2IPDI having the formula C12H18N2O2。
Optionally, mixing the partially hydroxylated fluorocarbon resin with an isocyanate, specifically:
and (3) carrying out crosslinking polymerization reaction on the partially hydroxylated fluorocarbon resin and isocyanate.
Specifically, the present application provides an alternative example of mixing a partially hydroxylated fluorocarbon resin with an isocyanate, specifically, performing a cross-linking polymerization reaction on the partially hydroxylated fluorocarbon resin and the isocyanate to synthesize the fluorocarbon polyurethane.
It should be noted that the cross-linking polymerization reaction of the partially hydroxylated fluorocarbon resin and the isocyanate is only an alternative embodiment provided herein, and the present application is not limited thereto.
Alternatively, the reaction equation during the preparation of the compound is:
wherein R is a non-functional group in the aliphatic isocyanate,
n, x, y, a, b, c and d are all polymerization degrees, a is equal to c, n, x and a are all integers in the range of 10 to 1000, and y, b and d are all integers in the range of 1000 to 10000.
Specifically, the synthesized fluorocarbon polyurethane is equivalent to combining fluorocarbon resin with polyurethane resin, so that the prepared novel fluorocarbon polyurethane can have the characteristics of both fluorocarbon resin and polyurethane resin. Specifically, aiming at the defect that the salt spray performance of polyurethane is relatively deficient, fluorocarbon resin is used for reinforcing the polyurethane, so that the synthesized fluorocarbon polyurethane has the salt spray resistance. The fluorocarbon resin also has super-strong ultraviolet resistance, so that the prepared fluorocarbon polyurethane also has super-strong ultraviolet resistance, and can have super-weather resistance when being used as a protective coating on the surfaces of iron, steel and composite materials, thereby protecting the materials from being corroded by the environment.
In addition, the fluorocarbon resin used in the present application is PVDF, which is cheaper than PTFE (polytetrafluoroethylene). The PVDF can be hydroxylated by using concentrated sulfuric acid and hydrogen peroxide and then can be prepared by reacting with aliphatic isocyanate, and the reaction is rapid and efficient. And the price of the isocyanate is far lower than that of PVDF, so that the price of the synthesized resin is greatly reduced, and the trend and the demand of cost reduction of industries such as photovoltaic, wind power and the like are met.
It needs to be added that in the prior art, equipment such as photovoltaic equipment, wind power equipment and the like needs to be protected by a coating in a C5 environment so as to support 25-year quality guarantee. The coating used at present is basically fluorocarbon resin and polyurethane, the fluorocarbon resin has good performance and high price, and the polyurethane has weak point but low price. However, the fluorocarbon polyurethane provided by the invention has the ultra-weather resistance of fluorocarbon resin; because the cheap isocyanate is added into the fluorocarbon resin to be used as a cross-linking agent to synthesize the polyurethane, the price of the synthesized fluorocarbon polyurethane is far lower than that of the fluorocarbon resin, and the fluorocarbon resin is a novel coating resin material with economy and excellent performance.
Fig. 2 is a schematic structural diagram of a photovoltaic module according to an embodiment of the present application, please refer to fig. 2 in combination with fig. 1, and based on the same inventive concept, a photovoltaic module 100 of the present application further includes: a bezel 21 and a back plate 22;
the frame 21 is wrapped around the photovoltaic module 100;
wherein, the aforementioned compound is disposed on the surface of at least one of the frame 21 and the back plate 22.
Specifically, the present application further provides a photovoltaic module 100, where the photovoltaic module 100 may be a solar photovoltaic module 100 used in a common social area, also called a solar cell panel; the solar energy power generation system is a core part in the solar energy power generation system and is also the most important part in the solar energy power generation system; the solar energy is converted into electric energy, or the electric energy is sent to a storage battery for storage, or a load is pushed to work.
As shown in fig. 2, the photovoltaic module 100 specifically includes a glass cover plate 23, an encapsulating material layer 24, a battery layer 25, a black glue film layer 26, a back plate 22, and a frame 21, where the frame 21 is used to cover the periphery of the film structures of the glass cover plate 23, the encapsulating material layer 24, the battery layer 25, the black glue film layer 26, and the back plate 22, so as to protect the film structures.
With the development of society, the requirements of users for the state displayed on the outer surface of the photovoltaic module 100 are higher and higher, such as whether the color displayed on the outer surface of the photovoltaic module 100 is uniform; since the color of the outer surface of the photovoltaic module 100 is mainly represented by the colors of the frame 21 and the back plate 22, if the frame 21 and/or the back plate 22 are corroded and part of the outer surface falls off after being exposed to wind and rain, the outer surface of the photovoltaic module 100 is not beautiful. The fluorocarbon polyurethane provided by the application can have super-weatherability when being used as a protective coating on the surfaces of iron, steel and composite materials, and can protect the materials from being corroded by the environment; therefore, the present application can improve the corrosion resistance, the service life, and the aesthetic appearance of the photovoltaic module 100 by coating the surface of at least one of the frame 21 and the back sheet 22 in the photovoltaic module 100 with fluorocarbon polyurethane.
In addition, in the weather resistance test, the fluorocarbon polyurethane provided by the application has no phenomena of bubbling, cracking, peeling and the like after the test of DH2000, PCT96, high humidity ultraviolet 2500kWh and salt spray 2000h, and can provide quality guarantee for more than 20 years through the test. In other words, since the fluorocarbon polyurethane has super weather resistance, the photovoltaic module 100 coated with the fluorocarbon polyurethane can ensure no fading for more than 20 years.
With reference to fig. 2, optionally, the compound is disposed on a surface of at least one of the frame 21 and the back plate 22 by electrophoresis or spraying.
Specifically, the manner of coating the fluorocarbon polyurethane on the surface of the photovoltaic module 100 may be electrophoresis or spraying; namely, the electrophoresis and spraying processes can be used for coating the surface of the photovoltaic component 100 by the fluorocarbon type polyurethane, and compared with the prior art, the method has the advantages of no need of process adjustment, simple product construction process and suitability for large-scale production. Specifically, the fluorocarbon polyurethane may be disposed on a surface of at least one of the frame 21 and the back sheet 22 of the photovoltaic module 100 by electrophoresis or spraying.
Supplementing, the fluorocarbon polyurethane is subjected to electrophoresis to form a coating on the outer surface of the photovoltaic module 100, wherein the thickness of the coating is about 20-30 μm; or, the fluorocarbon polyurethane is sprayed electrostatically to form a coating on the outer surface of the photovoltaic module 100, wherein the thickness of the coating is about 50-60 μm. The user may select an embodiment of the fluorocarbon polyurethane coating on the outer surface of the photovoltaic module 100 according to the requirement, which is not specifically limited in this application.
With continued reference to fig. 2, optionally, the photovoltaic device 100 is a black device, and the compound is sprayed on the surface of the frame 21.
Specifically, the present application provides a photovoltaic module 100 as a black module, that is, the outer surface of the photovoltaic module 100 presents a full black color; at least part of the surface of the frame 21 of the photovoltaic module 100 can be coated with fluorocarbon polyurethane to protect the outer surface of the frame 21 of the photovoltaic module 100 from the environment, so as to improve the aesthetic property and the service life of the photovoltaic module 100 to a certain extent.
In order to make the overall appearance of the photovoltaic module 100 show a more uniform black color, the present application provides an alternative arrangement mode that, in addition to using the conventional black glue film layer 26 and the black cell layer 25, a black bus bar (not shown), a black frame 21 and a black back plate 22 are used, so that the photovoltaic module 100 shows a state of a full black color.
It is also necessary to supplement that, the black pigment can be added into the fluorocarbon polyurethane according to the needs of the user, so that the fluorocarbon polyurethane finally coated on the outer surface of the photovoltaic module 100 can be embodied as pure black, which is beneficial to making the outer surface of the photovoltaic module 100 be in a very uniform full black state, and improving the color uniformity of the photovoltaic module 100.
It is also necessary to supplement that, a user can add pigments of other colors into the fluorocarbon polyurethane according to the needs of the user, so that the fluorocarbon polyurethane finally coated on the outer surface of the photovoltaic module 100 can be embodied into the color desired by the user; thus, different requirements of different users are met, and the protection effect on the photovoltaic module 100 is also achieved.
According to the embodiment, the compound, the preparation method thereof and the photovoltaic module provided by the invention at least realize the following beneficial effects:
the application provides a compound, a preparation method thereof and a photovoltaic module, and particularly provides the compound, wherein the compound is fluorocarbon polyurethane mainly prepared from fluorocarbon resin and isocyanate, and the fluorocarbon polyurethane can be coated on the surface of the photovoltaic module; because this fluorine-carbon type polyurethane has superstrong salt spray resistant characteristic, resistant ultraviolet characteristic, super weatherability, consequently can protect photovoltaic module's preparation material not receive the erosion of environment, be favorable to improving the maintenance life who coats the surface colour of photovoltaic module of this fluorine-carbon type polyurethane, improve photovoltaic module's service life.
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (10)
1. A compound having a chemical structure according to formula I,
wherein R in the formula I is a non-functional group in the aliphatic isocyanate,
and a, b, c and d are polymerization degrees, wherein a is c, a ranges from any integer of 10 to 1000, and b and d range from any integer of 1000 to 10000.
2. A process for preparing a compound according to claim 1, comprising:
providing a fluorocarbon resin;
adding concentrated sulfuric acid and hydrogen peroxide into the fluorocarbon resin to prepare at least partially hydroxylated fluorocarbon resin;
mixing the partially hydroxylated fluorocarbon resin with isocyanate to prepare fluorocarbon type polyurethane; the fluorocarbon polyurethane is the compound.
3. The production method according to claim 2,
the partially hydroxylated fluorocarbon resin is reacted with an isocyanate according to the isocyanate group: hydroxyl group 1-1.1: 1 in the ratio of 1.
4. The production method according to claim 2,
the fluorocarbon resin is polyvinylidene fluoride, and the isocyanate is aliphatic isocyanate.
5. The production method according to claim 4,
the aliphatic isocyanate comprises any one of hexamethylene diisocyanate, dicyclohexylmethane-4, 4' -diisocyanate and isophorone diisocyanate.
6. A method as claimed in claim 2, characterized in that said partially hydroxylated fluorocarbon resin is mixed with an isocyanate, in particular:
and (3) carrying out cross-linking polymerization reaction on the partially hydroxylated fluorocarbon resin and the isocyanate.
7. The method according to claim 2, wherein the reaction equation in the preparation of the compound is:
wherein R is a non-functional group in the aliphatic isocyanate,
n, x, y, a, b, c and d are all polymerization degrees, a is equal to c, n, x and a are all integers in the range of 10 to 1000, and y, b and d are all integers in the range of 1000 to 10000.
8. A photovoltaic module, comprising: a frame and a back plate;
the frame is wrapped around the photovoltaic module;
the compound of claim 1 disposed on a surface of at least one of the bezel and the backplate.
9. The photovoltaic module of claim 8, wherein the compound is disposed on a surface of at least one of the frame and the back sheet by electrophoresis or spraying.
10. The assembly according to claim 8, wherein the photovoltaic assembly is a black assembly, and the compound is sprayed on the surface of the frame.
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