A kind of single-layer solar back sheet and preparation method thereof
A solar back sheet, single-layer technology, applied in semiconductor devices, photovoltaic power generation, electrical components, etc., can solve the problems of tearing, poor interlayer peel strength, expensive fluorine-containing materials, etc., to prolong and improve the service life. Effect
Active Publication Date: 2020-11-17
浙江中聚材料有限公司
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- Abstract
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Problems solved by technology
[0005] 1) Using PET as the core layer of the backsheet, PET has poor hydrolysis aging resistance and is easy to crack by hydrolysis
[0006] 2) Its interlayer peeling strength is poor and it is easy to fall off. The prepared backsheet has poor adhesion, low electrical insulation, and is easy to embrittle and tear
[0007] 3) The price of fluorine-containing materials is relatively expensive and the production process is complicated, resulting in high production costs of the backplane
[0008] 4) Backsheets containing fluorine materials may pollute soil and groundwater during use
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment 1 Embodiment 5
[0040] In parts by weight, mix 50-90 parts of polyolefin, 1-50 parts of grafted polypropylene, 0.1-10 parts of light stabilizer, 0.1-1 part of antioxidant, and 5-30 parts of nano-filler at a speed of 500-1000rpm Stirring and mixing to obtain a premix, conveying the prepared premix to a granulation extruder, extruding and granulating at 150-300° C. to prepare a polyolefin compound. The polyolefin compound is transported to the back sheet extruder, melted and plasticized, and then extruded through a rectangular mouth die to obtain a sheet melt; the obtained sheet melt is cooled and shaped by a cooling roller, Winding to obtain the single-layer solar backsheet. The content of each component in Embodiment 1 to Embodiment 5 is shown in Table 1.
[0041] The content (parts by weight) of each component in table 1, embodiment one to embodiment five
[0042] components Embodiment one Embodiment two Embodiment three Embodiment Four Embodiment five Polypropylen...
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Abstract
The invention provides a single-layer solar rear panel. The material of the single-layer solar rear panel adopts a polyolefin compound, and the polyolefin compound comprises polyolefin, grafted polyolefin, a light stabilizer, nanofiller, and the like. The invention further provides a preparation method of the single-layer solar rear panel. The method comprises the following steps: mixing all components, extruding and pelletizing, then conveying modified pelletized materials into a sheet extruder, extruding a molten and plastified die with an opening, and performing cooling formation and rolling on an extruded plate-shaped melt, so as to obtain the single-layer solar rear panel. The single-layer solar rear panel is formed integrally, does not have interlayer stripping, improves the interlayer strength, and prevents delamination during use. The single-layer solar rear panel does not adopt a PET material which is easy to hydrolyze and age, and greatly increases the service life of a product. In addition, the cohesiveness of the single-layer solar rear panel to an EVA material is obviously higher than that of the conventional rear panel, and delamination during use is prevented. Finally, the single-layer solar rear panel does not contain a fluorine material, cannot pollute soil and underground water during use, and meets the requirement on environment-friendly materials.
Description
technical field [0001] The invention relates to a solar backboard and a preparation method thereof, in particular to a single-layer solar backboard without fluorine material and a preparation method thereof. Background technique [0002] Solar energy is the renewable and clean energy with the most abundant resources detected so far. It has unique advantages and huge potential for development and utilization. At present, more researches are on the use of solar power to generate electricity. Solar photovoltaic modules are the core part of solar power generation systems. [0003] Since solar photovoltaic modules are installed outdoors, their working environment is relatively poor, and they are often exposed to wind, sun, and rain. Therefore, there are high requirements for the sealing and ultraviolet resistance of solar photovoltaic modules. The solar backsheet is a structural packaging material for solar cell components, which plays an important role in prolonging the service ...
Claims
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IPC IPC(8): C08L23/12C08L23/06C08L51/06C08K3/22C08K5/134H01L31/049
CPCC08K2003/2241C08K2201/011C08L23/12C08L2205/03H01L31/049C08L23/06C08L51/06C08K3/22C08K5/1345Y02E10/50
Inventor 焦华田苍龙
Owner 浙江中聚材料有限公司