CN117637914A - Glass fiber composite substrate photovoltaic panel and preparation method and application thereof - Google Patents

Glass fiber composite substrate photovoltaic panel and preparation method and application thereof Download PDF

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Publication number
CN117637914A
CN117637914A CN202311605358.2A CN202311605358A CN117637914A CN 117637914 A CN117637914 A CN 117637914A CN 202311605358 A CN202311605358 A CN 202311605358A CN 117637914 A CN117637914 A CN 117637914A
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China
Prior art keywords
glass fiber
photovoltaic panel
ultraviolet
fiber composite
composite substrate
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CN202311605358.2A
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Chinese (zh)
Inventor
林建伟
张付特
常朱宁子
张大为
李君君
王展
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JOLYWOOD (SUZHOU) SUNWATT CO Ltd
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JOLYWOOD (SUZHOU) SUNWATT CO Ltd
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Priority to CN202311605358.2A priority Critical patent/CN117637914A/en
Publication of CN117637914A publication Critical patent/CN117637914A/en
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    • 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
    • B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D7/00—Producing flat articles, e.g. films or sheets
    • B29D7/01—Films or 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
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • 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
    • 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
    • H01L31/0481—Encapsulation of modules characterised by the composition of the encapsulation material
    • 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
    • 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
    • H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S30/00—Structural details of PV modules other than those related to light conversion
    • 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
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B32B2260/021—Fibrous or filamentary layer
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/101—Glass fibres
    • 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
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/412—Transparent
    • 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
    • B32B2307/546—Flexural strength; Flexion stiffness
    • 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
    • B32B2307/558—Impact strength, toughness
    • 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
    • B32B2307/71—Resistive to light or to UV
    • 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
    • B32B2307/724—Permeability to gases, adsorption
    • B32B2307/7242—Non-permeable
    • B32B2307/7246—Water vapor barrier
    • 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

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Reinforced Plastic Materials (AREA)
  • Photovoltaic Devices (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention relates to the technical field of photovoltaic panels, and discloses a glass fiber composite substrate photovoltaic panel, a preparation method and application thereof; the preparation method comprises the following steps: mixing quantitative polyurethane with a medium-low melting point, an ultraviolet absorber, an antioxidant and other auxiliary agents, extruding and granulating to obtain functionalized polyurethane master batches; extruding and casting the functionalized polyurethane melt from the die head between a casting roll and a pressing roll; and flatly attaching the ultraviolet-resistant glass fiber cloth and the substrate into a whole, introducing the glass fiber cloth and the substrate between the functionalized polyurethane melt and the pressure roller through the pressure roller to soften the substrate, applying pressure to bond the functionalized polyurethane melt, the ultraviolet-resistant glass fiber cloth and the substrate into a whole, and cooling to obtain the glass fiber composite substrate photovoltaic panel. The glass fiber composite substrate photovoltaic panel has excellent flexibility and mechanical strength, overcomes the problem of easy delamination between glass fiber cloth and a substrate, is firmly bonded with a glue film, has good light transmittance, ultraviolet aging resistance and water vapor barrier property, and is light in weight, and can replace the front panel and/or the back panel glass of a double-glass or single-glass assembly.

Description

Glass fiber composite substrate photovoltaic panel and preparation method and application thereof
Technical Field
The invention relates to the technical field of photovoltaic panels, in particular to a glass fiber composite substrate photovoltaic panel, a preparation method and application thereof.
Background
Most of photovoltaic modules in the market at present are packaged by taking glass as a photovoltaic panel. The glass has the advantages of high strength, good light transmittance, good price and the like; however, in terms of the photovoltaic modules that tend to be lightweight, glass is heavy and difficult to bend, and cannot be adapted to some installation environments with limited weight requirements or curved surfaces (such as flexible photovoltaic modules).
Based on this, CN114373815a discloses a semi-flexible light photovoltaic module, which comprises a polymer front plate, a first polymer adhesive film, ultra-thin glass, a second polymer adhesive film, a battery sheet layer, a third polymer adhesive film and a polymer back plate, which are sequentially laid from top to bottom and laminated and formed by a laminating machine. The invention replaces the front and rear plate glass with the macromolecule front and rear plates, and the photovoltaic component is clamped with an ultrathin glass, so that the quality of the photovoltaic component is reduced, the strength is higher, and hail can be resisted. However, the photovoltaic module cannot be flexibly bent and cannot be adapted to the installation environment of a bending surface.
The existing flexible photovoltaic module is mainly formed by collocating and packaging a transparent organic film front plate, a composite glass fiber material, a packaging adhesive film, a crystalline silicon battery, a packaging adhesive film and a back plate. The packaging mode of replacing the glass front plate with the transparent organic film reduces the weight of the photovoltaic module, has certain flexibility, but has poor mechanical strength and wear resistance and high water permeability, when encountering severe weather such as sand wind, hail and the like, the transparent organic film on the surface of the photovoltaic module is easy to damage, and the internal crystalline silicon cell is also subjected to vibration and even cracking, so that the output power of the photovoltaic module is influenced, and the service life of the photovoltaic module is greatly shortened.
Most of the composite glass fiber materials used in the photovoltaic module at present use a heat curing process (shown as CN 110854226B), namely, after the glass fiber is soaked by organic resin, the composite glass fiber materials are solidified and cooled at high temperature to form the composite glass fiber material; or directly bonding the glass fiber and the plastic film. However, the two types of composite glass fiber materials are easy to turn yellow in a layered manner under the conditions of high temperature and high humidity or ultraviolet damp heat and the like, so that the light transmittance and the durability of the strength of the photovoltaic module are seriously affected, and the power of the photovoltaic module is reduced and aged and disabled.
In addition, in the prior art, as disclosed in CN213936204U, a photovoltaic packaging board and a photovoltaic module with weather-proof protection effect are disclosed, and a cured light-transmitting weather-proof coating is further arranged on a flexible packaging layer formed by thermosetting powder coating composite fiber cloth, and the light-transmitting weather-proof coating can improve weather resistance and scratch resistance; however, in the heat curing process, the coated light-transmitting weather-resistant coating can volatilize solvents, the addition amount of the ultraviolet absorbent, the antioxidant and other auxiliary agents in the light-transmitting weather-resistant coating is limited (because the addition amount of the ultraviolet absorbent, the antioxidant and other auxiliary agents in the light-transmitting weather-resistant coating is too large, the performances such as light transmittance and peeling strength are affected), the weather-resistant degree is limited, interlayer delamination and yellowing of the coating are easy to occur under the conditions of long-term high temperature and high humidity or ultraviolet damp heat, and the harsh requirements of the material serving as the outermost layer of the photovoltaic module (such as a photovoltaic front plate or a photovoltaic back plate) cannot be met.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a glass fiber composite substrate photovoltaic panel, and a preparation method and application thereof.
Based on the above, the invention discloses a preparation method of a glass fiber composite substrate photovoltaic panel, which comprises the following preparation steps:
s1, uniformly mixing 91-98.5 parts of polyurethane with a medium-low melting point, 0.5-2 parts of ultraviolet absorbent, 0.5-2 parts of antioxidant and 0.5-5 parts of other auxiliary agents in parts by weight, extruding, granulating, cooling and drying to obtain functionalized polyurethane master batch;
s2, extruding the functionalized polyurethane master batch from a die head after melting, so that the extruded functionalized polyurethane melt is cast between a casting roller and a pressing roller;
s3, flatly attaching the ultraviolet-resistant glass fiber cloth and the substrate into a whole, introducing the whole between the extruded functional polyurethane melt and the pressure roller through the pressure roller, heating the functional polyurethane melt and the casting roller to enable the surface temperature of the substrate to reach above a softening point, applying pressure by the pressure roller, enabling the functional polyurethane melt, the ultraviolet-resistant glass fiber cloth and the substrate to be mutually adhered into a whole structure between the pressure roller and the casting roller, and outputting the integrated structure to a cooling roller for cooling to obtain the glass fiber composite substrate photovoltaic panel.
Preferably, the polyurethane with a medium-low melting point is thermoplastic polyurethane, the melting point is 150-170 ℃, the molecular weight is 5-15 ten thousand, and the polyurethane is not easy to separate out and decompose;
the ultraviolet absorber includes, but is not limited to, at least one of triazine ultraviolet absorber, salicylate ultraviolet absorber, a complex of triazine ultraviolet absorber and hindered amine ultraviolet absorber;
the antioxidant comprises at least one of hindered phenol antioxidants, aromatic amine antioxidants and auxiliary antioxidants and a compound thereof, and specifically comprises at least one of antioxidant 1010, antioxidant 168 and antioxidant 1076;
the other auxiliary agent is at least one of hydrolysis resistance agent, dispersing agent, wetting agent and chain extender.
Further preferably, in the step S1, the extrusion granulation is performed by adopting a double-screw granulator, the temperature of a feed inlet of the double-screw granulator is 170-190 ℃, the temperature of other areas is 190-220 ℃, and the functionalized polyurethane master batch is obtained after cooling and granulating and drying for 2-4 hours at 100-120 DEG C
Further preferably, in step S2, the temperature of the die is 170 to 220 ℃.
Preferably, in step S3, the preparation process of the ultraviolet-resistant glass fiber cloth is as follows: the gram weight is selected to be 130-260 g/m 2 Immersing the glass fiber cloth into an anti-ultraviolet finishing liquid containing 0.5-5 wt% (such as 0.5wt%, 1wt%, 2wt%, 3wt%, 4wt% or 5 wt%) of ultraviolet absorbent and 1-8 wt% (such as 1wt%, 3wt%, 5wt% or 8 wt%) of silane coupling agent, taking out, padding and drying to obtain the anti-ultraviolet glass fiber cloth.
Further preferably, in step S3, the glass fiber cloth has a gram weight of 200g/m 2 。
Preferably, in step S3, the width of the uv-resistant glass fiber cloth and the width of the substrate are cut to be suitable for the width of the pressing roller, and before the uv-resistant glass fiber cloth and the substrate are bonded into a whole, the uv-resistant glass fiber cloth and the substrate are subjected to plasma surface corona treatment;
the thickness of the base material is less than or equal to 305 mu m, and the base material is one or more of PET, PMMA, PETG, PA, PC, PETG. Among them, the substrate is preferably a PET substrate.
Preferably, in the step S3, the temperature of the casting roller and the pressing roller is 110-130 ℃, the gap width between the casting roller and the pressing roller is 1-2 mm, and the pressure is 300-500 Kpa; the temperature of the cooling roller is 0-10 ℃.
When the glass fiber composite substrate photovoltaic panel is prepared, polyurethane with a medium-low melting point (particularly thermoplastic with a medium-low melting point) is used, so that the viscosity is low, and the fluidity is good, so that the melted functional polyurethane master batch has good film forming property, and is easy to lay on the surface of an ultraviolet-resistant glass fiber cloth and a substrate (glass fiber substrate layer for short) which are integrally bonded, wherein the substrate is preferably a PET substrate, so that the interface combination of the functional polyurethane and the ultraviolet-resistant glass fiber cloth is tight; in addition, the polyurethane with the middle and low melting point (especially the thermoplastic with the middle and low melting point) has better wetting and penetrating effects on the ultraviolet-resistant glass fiber cloth, and when the polyurethane is cast on the surface of the ultraviolet-resistant glass fiber cloth, the melted functional polyurethane penetrates into the ultraviolet-resistant glass fiber cloth through the pressure of the pressure roller and is tightly adhered to the interface of a substrate (such as a PET substrate) through the ultraviolet-resistant glass fiber cloth.
Further, polar groups o=c=n in the melted functionalized polyurethane react with a small amount of polar groups in a substrate (such as a PET substrate) and a large amount of polar groups such as hydroxyl groups and carboxyl groups occurring on the surface of the substrate in a short time after the ultraviolet-resistant glass fiber cloth is subjected to plasma corona treatment; meanwhile, the high temperature of the melted functional polyurethane and the casting roller enables the surface temperature of the base material to reach above the softening point of the base material, so that the contact interface of the functional polyurethane material and the base material is physically cross-linked to form a net structure and a molecular chain entanglement, the bonding performance among the functional polyurethane, the ultraviolet-resistant glass fiber cloth and the base material is further improved, and the functional polyurethane, the ultraviolet-resistant glass fiber cloth and the base material are extruded into a compact integrated structure (namely the glass fiber composite base material photovoltaic panel) through pressurized casting. Therefore, the glass fiber composite substrate photovoltaic panel prepared by the method is not easy to delaminate after being subjected to high-temperature, high-humidity and aging treatment, has high initial peel strength and PCT48H aged peel strength, and has excellent tensile strength.
Meanwhile, polyurethane (especially thermoplastic with a medium-low melting point) has better flexibility, strong adhesive force with an adhesive film (such as a packaging adhesive film of a photovoltaic module), certain water vapor barrier property, reduced influence of water vapor infiltration on the photovoltaic module, excellent anti-aging effect of the polyurethane subjected to functional modification, and capability of replacing photovoltaic glass in the flexible photovoltaic module, and meeting complex installation environments such as a roof, outdoors and the like.
Furthermore, the invention not only adopts the functional polyurethane material, but also enables the glass fiber cloth to undergo anti-ultraviolet finishing (namely, glass fiber is immersed in anti-ultraviolet finishing liquid containing quantitative ultraviolet absorbent and silane coupling agent, and the anti-ultraviolet glass fiber cloth is obtained after padding and drying), thus, the ultraviolet can be effectively absorbed by the cooperation of the functional polyurethane material and the obtained anti-ultraviolet glass fiber cloth, thereby protecting polyurethane and base materials, reducing the damage of ultraviolet to the photovoltaic panel, in long-term use, the ultraviolet absorbent arranged on the glass fiber cloth can gradually migrate to the surface of the functional polyurethane material from the inside of the glass fiber cloth, and the long-term anti-ultraviolet ageing effect of the photovoltaic panel is maintained, so that the delamination of the glass fiber composite base material photovoltaic panel after high-temperature high-humidity and ageing treatment is avoided, the obtained PCT48H ageing and DH3000H yellowing performance of the glass fiber composite base material photovoltaic panel are excellent, the initial light transmittance and the light transmittance (400-1100 nm) after ageing are high, and simultaneously, and the addition cost of the ultraviolet absorbent in the functional polyurethane material can be reduced.
The invention also discloses a glass fiber composite substrate photovoltaic panel which is prepared by the preparation method of the glass fiber composite substrate photovoltaic panel.
The invention also discloses an application of the glass fiber composite substrate photovoltaic panel, namely, the glass fiber composite substrate photovoltaic panel disclosed by the invention is applied to a photovoltaic module to replace front plate glass and/or back plate glass of the photovoltaic module;
the functional polyurethane layer of the glass fiber composite substrate photovoltaic panel is adhered to the packaging adhesive film of the photovoltaic module, and the substrate faces to the outside air.
Compared with the prior art, the invention at least comprises the following beneficial effects:
the glass fiber composite substrate photovoltaic panel prepared by the invention has excellent flexibility and mechanical strength (the bending strength can reach 86.58MPa, and the tensile strength can reach 266.64 MPa), solves the problem of easy delamination between glass fiber cloth and a substrate (such as PET substrate), is firmly bonded with an encapsulation adhesive film for a photovoltaic module, has higher initial peel strength between the glass fiber composite substrate photovoltaic panel and the encapsulation adhesive film and peeling strength after PCT48H aging, has excellent water vapor barrier property, initial light transmittance, light transmittance after PCT48H aging and ultraviolet aging resistance (such as excellent yellowing performance after PCT48H aging and DH3000H aging), has light weight and simple preparation process, and can replace front plate glass and/or back plate glass of the existing double-glass or single-glass photovoltaic module.
Drawings
Fig. 1 is a schematic structural view of a partially decomposed photovoltaic panel with a glass fiber composite substrate according to the present invention.
Fig. 2 is a flow casting preparation process diagram of a preparation method of a glass fiber composite substrate photovoltaic panel according to the present invention.
Reference numerals illustrate: a functionalized polyurethane layer 1; a functionalized polyurethane melt 11; a glass fiber substrate layer 2; a PET base material 21; an ultraviolet resistant glass cloth 22; a die head 3; a pressing roller 4; a casting roll 5; and a cooling roller 6.
Detailed Description
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
Example 1
The preparation method of the glass fiber composite substrate photovoltaic panel of the embodiment, referring to fig. 2, comprises the following preparation steps:
step 1, preparation of functionalized polyurethane master batch:
step 11, selecting thermoplastic polyurethane with molecular weight of 8 ten thousand and melting point of 150 ℃ (namely, the polyurethane is thermoplastic polyurethane with medium and low melting point), wherein the mass ratio of the thermoplastic polyurethane in the functionalized polyurethane material (specifically, the functionalized polyurethane master batch) is 98.4 percent (which can be abbreviated as 98.4 wt%), 0.5wt% of ultraviolet absorber, namely, board 5431,0.2wt% of antioxidant 1076, 0.4wt% of antioxidant 168, and 0.5wt% of hydrolysis inhibitor AW700 (in other examples of the invention, other auxiliary agents such as dispersing agents and/or wetting agents and/or chain extenders can be added), and uniformly mixing the raw materials to obtain a polyurethane mixture.
Step 12, adjusting the temperature of a feed inlet of the double-screw granulator to 170 ℃, wherein the temperature of other areas in the double-screw granulator is 195 ℃, and the temperature of a discharge outlet is 200 ℃; and then, extruding and granulating the polyurethane mixture obtained in the step 11 by adopting the double-screw granulator, cooling and granulating, and drying for 4 hours at 100 ℃ to obtain the functionalized polyurethane master batch.
In other examples of the invention, the raw material composition of the functionalized polyurethane masterbatch may also be: 91 to 98.5wt% (such as 91wt%, 95wt% or 98 wt%), 0.5 to 2wt% (such as 0.8wt%, 1wt%, 1.5wt% or 2 wt%) of ultraviolet absorbent, 0.5 to 2wt% (such as 0.5wt%, 1wt%, 1.5wt% or 2 wt%) of antioxidant and 0.5 to 5wt% (such as 1wt%, 2wt%, 3wt%, 4wt% or 5 wt%) of other auxiliary agents (such as hydrolysis-resistant agent and/or dispersant and/or wetting agent and/or chain extender).
Step 2, preparation of ultraviolet-resistant glass fiber cloth 22:
the gram weight is selected to be 200g/m 2 Immersing the glass fiber cloth into an ultraviolet resistant finishing liquid containing 1wt% of an ultraviolet absorbent chuboard 5431 and 3wt% of a silane coupling agent KH570, taking out, padding and drying to obtain the ultraviolet resistant glass fiber cloth 22.
Step 3, controlling the temperature of the die head 3 to 190 ℃, the temperature of the casting roller 5 and the pressure roller 4 to be 110 ℃, the width of a gap between the casting roller 5 and the pressure roller 4 to be 1mm, the pressure between the casting roller 5 and the pressure roller 4 to be 400KPa, and the temperature of the cooling roller 6 to be 10 ℃; the functionalized polyurethane master batch is extruded from the die head 3 after being melted, and the extruded functionalized polyurethane melt 11 is cast between the casting roll 5 and the pressing roll 4.
Step 4, after the ultraviolet-resistant glass fiber cloth 22 and the PET substrate 21 with the thickness of 285 μm (in other examples of the invention, substrates with the thickness of less than or equal to 305 μm, such as PMMA, PETG, PA, PC or other materials of PETG, are adopted) are subjected to plasma corona treatment, the ultraviolet-resistant glass fiber cloth 22 and the PET substrate 21 are flatly attached together to form the glass fiber substrate layer 2, wherein the width of each of the ultraviolet-resistant glass fiber cloth 22 and the PET substrate 21 is cut to be suitable for the width of the pressure roller 4, the glass fiber substrate layer 2 is introduced between the extruded functional polyurethane melt 11 and the pressure roller 4 through the pressure roller 4, the surface temperature of the PET substrate 21 reaches more than the softening point through the heating of the functional polyurethane melt 11 and the casting roller 5, then the pressure roller 4 applies pressure, the functional polyurethane melt 11, the ultraviolet-resistant glass fiber cloth 22 and the PET substrate 21 are mutually adhered between the pressure roller 4 and the casting roller 5 to form an integral structure, and are output to the cooling roller 6 for cooling, and finally the cooling roller 6 is used for winding, so as to obtain the glass fiber composite substrate photovoltaic panel. The structure of the glass fiber composite substrate photovoltaic panel is shown in fig. 1, and comprises a functional polyurethane layer 1, an ultraviolet-resistant glass fiber cloth 22 and a PET substrate 21.
In the method for preparing the glass fiber composite substrate photovoltaic panel of the embodiment, the step 1 (preparation of the functionalized polyurethane masterbatch) and the step 2 (preparation of the ultraviolet-resistant glass fiber cloth 22) do not have a sequence. Namely: the functionalized polyurethane masterbatch can be prepared first, and then the ultraviolet resistant glass fiber cloth 22 can be prepared; or preparing the ultraviolet-resistant glass fiber cloth 22, and then preparing the functional polyurethane master batch; of course, the functional polyurethane masterbatch and the uv-resistant glass fiber cloth 22 may be prepared simultaneously, and may be specifically selected according to practical needs (this is the case in each of the following embodiments, and thus will not be described in detail).
The application of the glass fiber composite substrate photovoltaic panel prepared by the embodiment is that the glass fiber composite substrate photovoltaic panel is applied to a photovoltaic module to replace front plate glass and/or back plate glass of the photovoltaic module; at this time, the functionalized polyurethane layer 1 of the glass fiber composite substrate photovoltaic panel is adhered to the packaging adhesive film of the photovoltaic module, and the substrate faces the outside air.
Example 2
The preparation method of the glass fiber composite substrate photovoltaic panel of the embodiment refers to the preparation step of the embodiment 1, and the difference from the embodiment 1 is that:
in the step 2, the gram weight of the glass fiber cloth is 260g/m 2 . The remaining preparation steps, raw materials and parameters of this example were the same as in example 1.
The photovoltaic panel with the glass fiber composite substrate prepared in this example and the application thereof are all referred to in example 1.
Example 3
The preparation method of the glass fiber composite substrate photovoltaic panel of the embodiment, referring to fig. 2, comprises the following preparation steps:
step 1, preparation of functionalized polyurethane master batch:
step 11, selecting thermoplastic polyurethane with the molecular weight of 10 ten thousand and the melting point of 160 ℃ (namely, the thermoplastic polyurethane is middle-low melting point thermoplastic polyurethane), wherein the mass ratio of the thermoplastic polyurethane in a functionalized polyurethane material (specifically, functionalized polyurethane master batch) is 98.4%, an ultraviolet absorbent chiguard5577 with the weight percent of 0.5%, an antioxidant 1010 with the weight percent of 0.2%, an antioxidant 168 with the weight percent of 0.4% and an anti-hydrolysis agent AS4 with the weight percent of 0.5%, and uniformly mixing the raw materials to obtain a polyurethane mixture.
Step 12, adjusting the temperature of a feed inlet of the double-screw granulator to 180 ℃, wherein the temperature of other areas in the double-screw granulator is 200 ℃, and the temperature of a discharge outlet is 205 ℃; and then, extruding and granulating the polyurethane mixture obtained in the step 11 by adopting the double-screw granulator, cooling and granulating, and drying for 4 hours at 100 ℃ to obtain the functionalized polyurethane master batch.
Step 2, preparation of ultraviolet-resistant glass fiber cloth 22:
the gram weight is selected to be 200g/m 2 Immersing the glass fiber cloth into an ultraviolet resistant finishing liquid containing 1wt% of an ultraviolet absorbent chugard 5577 and 3wt% of a silane coupling agent KH570, taking out, padding and drying to obtain the ultraviolet resistant glass fiber cloth 22.
Step 3, controlling the temperature of the die head 3 to 195 ℃, the temperature of the casting roller 5 and the pressure roller 4 to 110 ℃, the width of a gap between the casting roller 5 and the pressure roller 4 to 1mm, the pressure between the casting roller 5 and the pressure roller 4 to 400KPa, and the temperature of the cooling roller 6 to 5 ℃; the functionalized polyurethane master batch is extruded from the die head 3 after being melted, and the extruded functionalized polyurethane melt 11 is cast between the casting roll 5 and the pressing roll 4.
Step 4, after the ultraviolet-resistant glass fiber cloth 22 and the PET substrate 21 with the thickness of 285 μm are subjected to plasma corona treatment, the ultraviolet-resistant glass fiber cloth 22 and the PET substrate 21 are flatly attached into a whole to form a glass fiber substrate layer 2, wherein the widths of the ultraviolet-resistant glass fiber cloth 22 and the PET substrate 21 are both cut to be suitable for the width of the pressing roller 4, the glass fiber substrate layer 2 is introduced between the extruded functional polyurethane melt 11 and the pressing roller 4 through the pressing roller 4, the surface temperature of the PET substrate 21 reaches above a softening point through the heating of the functional polyurethane melt 11 and the casting roller 5, the pressing roller 4 applies pressure, the functional polyurethane melt 11, the ultraviolet-resistant glass fiber cloth 22 and the PET substrate 21 are mutually adhered into an integrated structure between the pressing roller 4 and the casting roller 5, the integrated structure is output to the cooling roller 6 for cooling, and finally the integrated structure is conveyed to the outside the cooling roller 6 for winding, and the glass fiber composite substrate photovoltaic panel is obtained (the structure is shown in figure 1).
The photovoltaic panel with the glass fiber composite substrate prepared in this example and the application thereof are all referred to in example 1.
Example 4
The preparation method of the glass fiber composite substrate photovoltaic panel of the embodiment, referring to fig. 2, comprises the following preparation steps:
step 1, preparation of functionalized polyurethane master batch:
step 11, selecting thermoplastic polyurethane with the molecular weight of 14 ten thousand and the melting point of 170 ℃ (namely, the thermoplastic polyurethane is middle-low melting point thermoplastic polyurethane), wherein the mass ratio of the thermoplastic polyurethane in a functionalized polyurethane material (specifically, functionalized polyurethane master batch) is 98.4 percent (which can be abbreviated as 98.4 wt%), an ultraviolet absorber UV531, an antioxidant AT3114 and an antioxidant Hostanox P-EPQ, wherein the antioxidant AT3114 and the antioxidant Hostanox P-EPQ are respectively 0.2wt%, and the hydrolytic inhibitor hydrotab 3 are respectively and uniformly mixed to obtain a polyurethane mixture.
Step 12, adjusting the temperature of a feed inlet of the double-screw granulator to 180 ℃, wherein the temperature of other areas in the double-screw granulator is 205 ℃, and the temperature of a discharge outlet is 210 ℃; and then, extruding and granulating the polyurethane mixture obtained in the step 11 by adopting the double-screw granulator, cooling and granulating, and drying for 3 hours at 110 ℃ to obtain the functionalized polyurethane master batch.
Step 2, preparation of ultraviolet-resistant glass fiber cloth 22:
the gram weight is selected to be 200g/m 2 Immersing the glass fiber cloth in a solution containing 1 wt.%% of ultraviolet absorber UV531 and 3wt% of silane coupling agent KH570, taking out, padding and drying to obtain the ultraviolet-resistant glass fiber cloth 22.
Step 3, controlling the temperature of the die head 3 to 210 ℃, the temperature of the casting roller 5 and the pressure roller 4 to 120 ℃, the width of a gap between the casting roller 5 and the pressure roller 4 to be 1mm, the pressure between the casting roller 5 and the pressure roller 4 to be 500KPa, and the temperature of the cooling roller 6 to be 5 ℃; the functionalized polyurethane master batch is extruded from the die head 3 after being melted, and the extruded functionalized polyurethane melt 11 is cast between the casting roll 5 and the pressing roll 4.
Step 4, after the ultraviolet-resistant glass fiber cloth 22 and the PET substrate 21 with the thickness of 285 μm are subjected to plasma corona treatment, the ultraviolet-resistant glass fiber cloth 22 and the PET substrate 21 are flatly attached into a whole to form a glass fiber substrate layer 2, wherein the widths of the ultraviolet-resistant glass fiber cloth 22 and the PET substrate 21 are both cut to be suitable for the width of the pressing roller 4, the glass fiber substrate layer 2 is introduced between the extruded functional polyurethane melt 11 and the pressing roller 4 through the pressing roller 4, the surface temperature of the PET substrate 21 reaches above a softening point through the heating of the functional polyurethane melt 11 and the casting roller 5, the pressing roller 4 applies pressure, the functional polyurethane melt 11, the ultraviolet-resistant glass fiber cloth 22 and the PET substrate 21 are mutually adhered into an integrated structure between the pressing roller 4 and the casting roller 5, the integrated structure is output to the cooling roller 6 for cooling, and finally the integrated structure is conveyed to the outside the cooling roller 6 for winding, and the glass fiber composite substrate photovoltaic panel is obtained (the structure is shown in figure 1).
The photovoltaic panel with the glass fiber composite substrate prepared in this example and the application thereof are all referred to in example 1.
Comparative example 1
A method for producing a glass fiber composite substrate photovoltaic panel of this comparative example, the production steps of which are described in reference to example 1, differs from example 1 in that:
in step 2 of this comparative example, the uv-resistant finishing liquid used contained only 3wt% of the silane coupling agent KH570 (not containing 1wt% of the uv absorber chiguard 5431); the grammage and preparation process of the glass fiber cloth are the same as those of the step 2 of the example 1.
Step 1, step 3 and step 4 of this comparative example were referred to example 1 to obtain a glass fiber composite substrate photovoltaic panel of this comparative example.
The photovoltaic panel with the glass fiber composite substrate and the application thereof prepared in the comparative example are all referred to in the example 1.
Comparative example 2
A method for producing a glass fiber composite substrate photovoltaic panel of this comparative example, the production steps of which are described in reference to example 3, differs from example 3 in that:
in step 1 of this comparative example, the functionalized polyurethane masterbatch of step 1 of example 3 was directly replaced with polyurethane having a molecular weight of 10 ten thousand and a melting point of 160 ℃.
In step 2 of this comparative example, the anti-uv finishing liquid used contained only 3wt% of the silane coupling agent KH570 (not containing 1wt% of the uv absorber chiguard 5577); the grammage and preparation process of the glass fiber cloth are the same as those of the step 2 of the example 3.
Step 3 and step 4 of this comparative example were both referred to example 3 to obtain a glass fiber composite substrate photovoltaic panel of this comparative example.
The photovoltaic panel with the glass fiber composite substrate and the application thereof prepared in the comparative example are all referred to in example 3.
Comparative example 3
A method for producing a glass fiber composite substrate photovoltaic panel of this comparative example, the production steps of which are described in reference to example 4, differs from example 4 in that:
in step 1 of this comparative example, the functionalized polyurethane masterbatch of step 1 of example 4 was directly replaced with a polyurethane having a molecular weight of 14 ten thousand and a melting point of 170 ℃.
In step 2 of this comparative example, the anti-UV finishing liquid used contained only 3wt% of the silane coupling agent KH570 (not containing 1wt% of the UV absorber UV 531); the grammage and preparation process of the glass fiber cloth are the same as those of the step 2 of the example 4.
Step 3 and step 4 of this comparative example were both referred to example 4 to obtain a glass fiber composite substrate photovoltaic panel of this comparative example.
The photovoltaic panel with the glass fiber composite substrate and the application thereof prepared in the comparative example are all referred to in example 4.
Comparative example 4
A method for producing a glass fiber composite substrate photovoltaic panel of this comparative example, the production steps of which are described in reference to example 4, differs from example 4 in that:
in the step 1 of the comparative example, the molecular weight of the polyurethane selected for preparing the functionalized polyurethane master batch is 17 ten thousand, and the melting point is 190 ℃; the preparation process of the functionalized polyurethane master batch is concretely referred to in the step 1 of the example 4.
Steps 2 to 4 of this comparative example were referred to example 4 to obtain a glass fiber composite substrate photovoltaic panel of this comparative example.
The photovoltaic panel with the glass fiber composite substrate and the application thereof prepared in the comparative example are all referred to in example 4.
Performance testing
The following performance tests were performed on the glass fiber composite substrate photovoltaic panels prepared in examples 1 to 4 and comparative examples 1 to 4, respectively: initial light transmittance, peel strength with the adhesive film, moisture barrier (characterized by water vapor transmission), flexural and tensile strength, light transmittance after PCT48H aging, yellowing performance and peel strength with the adhesive film, and yellowing performance after DH3000H aging. The test results are shown in table 1 below:
TABLE 1
As can be seen from table 1:
(1) Examples 1 to 4 and comparative examples 1 to 4 were high in both initial light transmittance and peel strength, and low in both initial water vapor transmittance, indicating that the polyurethane was excellent in light transmittance and water vapor barrier property, and also strong in adhesion to the adhesive film.
(2) The bending strength and the tensile strength of the examples 1, 3 and 4 are gradually enhanced, which reflects the fact that the strength (such as bending strength and tensile strength) of the prepared glass fiber composite substrate photovoltaic panel is enhanced along with the increase of the molecular weight of polyurethane used for the functionalized polyurethane master batch, and the polyurethane has the advantages of larger molecular weight, larger viscosity, better film forming property, uniform stress and higher strength.
Further, the strength of comparative example 3 is higher than that of comparative example 2, but the initial peel strength of comparative example 3 and the peel strength after aging of PCT48H are instead smaller than those of comparative example 2; similarly, comparative example 4 has a higher strength than example 4, but comparative example 4 has a lower initial peel strength and PCT48H aged peel strength than example 4; the initial peel strength of the prepared glass fiber composite substrate photovoltaic panel and the peel strength of the obtained PCT48H after aging are reduced along with the increase of the melting point of polyurethane used by the functionalized polyurethane master batch, after the melting point of the polyurethane is too high, the fluidity is reduced, the infiltration and penetration effect of the polyurethane with the glass fiber cloth are reduced, the viscosity of the polyurethane with the high melting point is high, the glass fiber cloth is slightly uneven in surface spreading, the fluctuation range of test values is large, and the peel strength of the polyurethane with a glue film (such as EVA packaging glue film for a photovoltaic module) is low.
Therefore, in order to make the prepared glass fiber composite substrate photovoltaic panel have better strength, initial peeling strength and peeling strength after PCT48H aging, the invention selects thermoplastic polyurethane with medium-low melting point (specifically, the melting point range of the thermoplastic polyurethane is 150-170 ℃ C., the molecular weight range is 5-15 ten thousand, preferably 8-14 ten thousand) to prepare functional polyurethane master batches and glass fiber composite substrate photovoltaic panels (the melting point of the thermoplastic polyurethane is increased when the molecular weight of the polyurethane is large).
(3) The bending strength and the tensile strength of example 2 are higher than those of example 1, the phenomenon is related to the gram weight of the glass fiber cloth, and the higher the gram weight is, the higher the strength of the prepared glass fiber composite substrate photovoltaic panel is; however, the transmittance of example 2 is slightly lower than that of example 1, which means that the larger gram weight of the glass fiber cloth affects the transmittance of the glass fiber composite substrate photovoltaic panel and further affects the photovoltaic power generation efficiency of the photovoltaic module. Thus, the photovoltaic panel is a photovoltaic panel with a glass fiber composite substrateThe invention adopts the gram weight of 130g/m 2 ～260g/m 2 (preferably 200 g/m) 2 ) The glass fiber cloth of (2) is used for preparing the glass fiber composite substrate photovoltaic panel.
(4) The light transmittance and peel strength of comparative example 2 after PCT48H aging were lower than those of example 3, and the yellowing value of PCT48H after aging was higher than that of example 3; similarly, comparative example 3 has lower transmittance and peel strength after PCT48H aging than example 4, and higher yellowing value after PCT48H aging than example 4; the invention shows that the ultraviolet absorbers, antioxidants and anti-hydrolysis agents with different types have good PCT48H aging resistance effect on the glass fiber composite substrate photovoltaic panel, so that the functional auxiliary agent is required to be added in the preparation of the functional polyurethane master batch and the ultraviolet-resistant glass fiber cloth.
(5) The yellowing of the comparative example 1 is higher than that of the example 1 and lower than that of the comparative examples 2-3 after DH3000H, which shows to a certain extent that the long-term ultraviolet aging resistance of the glass fiber composite substrate photovoltaic panel is obviously improved after the glass fiber cloth is treated by the ultraviolet resistant finishing liquid which simultaneously contains the ultraviolet absorbent and the silane coupling agent.
In conclusion, the glass fiber composite substrate photovoltaic panel prepared by the invention has excellent flexibility and mechanical strength, solves the problem of easy delamination between glass fiber cloth and a substrate (such as PET substrate), is firmly bonded with an encapsulation adhesive film for a photovoltaic module, has higher initial peel strength between the glass fiber composite substrate photovoltaic panel and the encapsulation adhesive film and peeling strength after PCT48H aging, has excellent water vapor barrier property, initial light transmittance, light transmittance after PCT48H aging and ultraviolet aging resistance (such as excellent yellowing performance after PCT48H aging and DH3000H aging), is light in weight and simple in preparation process, and can replace front plate glass and/or back plate glass of the existing double-glass or single-glass photovoltaic module.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the embodiments of the invention.
The foregoing has outlined rather broadly the more detailed description of the invention in order that the detailed description of the invention that follows may be better understood, and in order that the present principles and embodiments may be better understood; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present invention, the present description should not be construed as limiting the present invention in view of the above.

Claims (10)

1. The preparation method of the glass fiber composite substrate photovoltaic panel is characterized by comprising the following preparation steps:
s1, uniformly mixing 91-98.5 parts of polyurethane with a medium-low melting point, 0.5-2 parts of ultraviolet absorbent, 0.5-2 parts of antioxidant and 0.5-5 parts of other auxiliary agents in parts by weight, extruding, granulating, cooling and drying to obtain functionalized polyurethane master batch;
s2, extruding the functionalized polyurethane master batch from a die head after melting, so that the extruded functionalized polyurethane melt is cast between a casting roller and a pressing roller;
s3, flatly attaching the ultraviolet-resistant glass fiber cloth and the substrate into a whole, introducing the whole between the extruded functional polyurethane melt and the pressure roller through the pressure roller, heating the functional polyurethane melt and the casting roller to enable the surface temperature of the substrate to reach above a softening point, applying pressure by the pressure roller, enabling the functional polyurethane melt, the ultraviolet-resistant glass fiber cloth and the substrate to be mutually adhered into a whole structure between the pressure roller and the casting roller, and outputting the integrated structure to a cooling roller for cooling to obtain the glass fiber composite substrate photovoltaic panel.
2. The method for preparing the glass fiber composite substrate photovoltaic panel according to claim 1, wherein the polyurethane with a medium-low melting point is thermoplastic polyurethane, the melting point is 150-170 ℃, and the molecular weight is 5-15 ten thousand;
the ultraviolet absorbent is at least one of triazine ultraviolet absorbent, salicylate ultraviolet absorbent and compound of triazine ultraviolet absorbent and hindered amine ultraviolet absorbent;
the antioxidant is at least one of antioxidant 1010, antioxidant 168 and antioxidant 1076;
the other auxiliary agent is at least one of hydrolysis resistance agent, dispersing agent, wetting agent and chain extender.
3. The method for preparing a glass fiber composite substrate photovoltaic panel according to claim 1 or 2, wherein in the step S1, a twin-screw granulator is adopted to carry out extrusion granulation, the temperature of a feed inlet of the twin-screw granulator is 170-190 ℃, the temperature of each other region is 190-220 ℃, and after cooling and granulating, the functionalized polyurethane master batch is obtained by drying for 2-4 hours at 100-120 ℃.
4. The method for producing a glass fiber composite substrate photovoltaic panel according to claim 1 or 2, wherein in step S2, the temperature of the die is 170 to 220 ℃.
5. The method for preparing a glass fiber composite substrate photovoltaic panel according to claim 1, wherein in step S3, the preparation process of the ultraviolet-resistant glass fiber cloth is as follows: the gram weight is selected to be 130-260 g/m 2 Immersing the glass fiber cloth into an ultraviolet-resistant finishing liquid containing 0.5-5 wt% of ultraviolet absorbent and 1-8 wt% of silane coupling agent, taking out, padding and drying to obtain the ultraviolet-resistant glass fiber cloth.
6. The method for manufacturing a glass fiber composite substrate photovoltaic panel according to claim 5, wherein in step S3, the gram weight of the glass fiber cloth is 200g/m 2 。
7. The method for preparing a glass fiber composite substrate photovoltaic panel according to claim 1, wherein in step S3, the ultraviolet-resistant glass fiber cloth and the substrate are both cut to have a width suitable for the width of the pressing roller, and before being bonded into a whole, the ultraviolet-resistant glass fiber cloth and the substrate are subjected to plasma surface corona treatment;
the thickness of the base material is less than or equal to 305 mu m, and the base material is one or more of PET, PMMA, PETG, PA, PC, PETG.
8. The method for manufacturing a glass fiber composite substrate photovoltaic panel according to claim 1, wherein in the step S3, the temperature of the casting roll and the pressing roll is 110 to 130 ℃, the gap width between the casting roll and the pressing roll is 1 to 2mm, and the pressure is 300 to 500Kpa; the temperature of the cooling roller is 0-10 ℃.
9. A glass fiber composite substrate photovoltaic panel, characterized in that it is produced by the method for producing a glass fiber composite substrate photovoltaic panel according to any one of claims 1 to 8.
10. The use of a glass fiber composite substrate photovoltaic panel according to claim 9, wherein the glass fiber composite substrate photovoltaic panel is used in a photovoltaic module to replace the front panel glass and/or the back panel glass of the photovoltaic module;
the functional polyurethane layer of the glass fiber composite substrate photovoltaic panel is adhered to the packaging adhesive film of the photovoltaic module, and the substrate faces to the outside air.
CN202311605358.2A 2023-11-28 2023-11-28 Glass fiber composite substrate photovoltaic panel and preparation method and application thereof Pending CN117637914A (en)

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