Five-layer structure co-extruded solar battery backplane with PBT and manufacturing method thereof

A solar cell and layer structure technology, which is applied in chemical instruments and methods, circuits, electronic equipment, etc., can solve the problems of layer-to-layer detachment and separation, PETG material weather resistance and environmental erosion resistance are not good enough to achieve firm bonding, The operation process is simplified and the effect of ensuring the efficiency of use

Inactive Publication Date: 2018-10-19
杭州福禧新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The patent number of Ningbo Longyang Technology Co., Ltd. is Z201110380482.4, which discloses a solar cell backplane and its preparation method. The backplane uses PETG as a weather-resistant layer, PET as a structural reinforcement layer, and EVOH as a barrier layer for multi-layer co-extrusion. There is no need to use adhesives, but the weather resistance and environmental erosion resistance of PETG materials are far inferior to those of fluorine-containing materials. At the same time, without adhesives between layers, it is easy to fall off between layers after long-term use separation phenomenon

Method used

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Examples

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preparation example Construction

[0054] A method for preparing a five-layer structure co-extruded solar battery back sheet containing PBT according to the claims, characterized in that it specifically comprises the following steps:

[0055] (1) Use a high-speed mixer to mechanically mix polyvinylidene fluoride, nano-scale fillers, flow modifiers, reinforcing resins, inorganic fillers and thermal stability additives at room temperature for 5-10 minutes, then use a twin-screw extruder to melt Extrusion granulation, extrusion temperature 200-230 ℃, screw speed 200-350rpm, to obtain modified polyvinylidene fluoride pellets, used as the outer weather-resistant layer;

[0056] (2) Use a high-speed mixer to mechanically mix polybutylene terephthalate, nano-titanium dioxide, toughener and antioxidant at room temperature for 5-10 minutes, then use a twin-screw extruder for melt extrusion Granulation, extrusion temperature 200-230°C, screw speed 200-350rpm, to obtain modified polybutylene terephthalate pellets, used as...

Embodiment 1

[0063] A five-layer structure co-extrusion solar battery back sheet containing PBT, its specific preparation process is as follows:

[0064] (1) Use a high-speed mixer to mix 75 parts of polyvinylidene fluoride, 5 parts of nano-calcium carbonate, 3.5 parts of DOP, 4 parts of methacrylic resin, 6 parts of acrylic resin, and 5 parts of TiO in parts by weight. 2, 1 part of DBTM and 0.5 part of calcium stearate are mixed mechanically at room temperature for 5-10 minutes, and then melted and extruded by a twin-screw extruder at a temperature of 200-230°C and a screw speed of 200-350rpm. Post-granulation to obtain modified polyvinylidene fluoride pellets;

[0065] (2) 50 parts by weight of polybutylene terephthalate, 20 parts of nano-titanium dioxide, 29 parts of methyl methacrylate-butadiene-styrene terpolymer and After 1 part of Antioxidant 1010 is mechanically mixed at room temperature for 5-10 minutes, it is melt-extruded with a twin-screw extruder at an extrusion temperature o...

Embodiment 2

[0068] A five-layer structure co-extrusion solar battery back sheet containing PBT, its specific preparation process is as follows:

[0069] (1) Use a high-speed mixer to mix 75 parts of polyvinylidene fluoride, 5 parts of nano-calcium carbonate, 3.5 parts of DOP, 4 parts of methacrylic resin, 6 parts of acrylic resin, and 5 parts of TiO in parts by weight. 2 , 1 part of DBTM and 0.5 part of calcium stearate are mixed mechanically at room temperature for 5-10 minutes, and then melted and extruded by a twin-screw extruder at a temperature of 200-230°C and a screw speed of 200-350rpm. Post-granulation to obtain modified polyvinylidene fluoride layer pellets;

[0070] (2) 50 parts by weight of polybutylene terephthalate, 20 parts of nano-titanium dioxide, 29 parts of methyl methacrylate-butadiene-styrene terpolymer and After 1 part of Antioxidant 1010 is mechanically mixed at room temperature for 5-10 minutes, it is melt-extruded with a twin-screw extruder at an extrusion temper...

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PUM

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Abstract

The invention discloses a five-layer structure co-extruded solar battery backplane with a PBT and a manufacturing method thereof and belongs to the technical field of a solar battery backplane. The solar battery backplane comprises an outer weathering layer, an outer bonding layer, a substrate layer, an inner bonding layer and an inner weathering layer, wherein the outer weathering layer and the substrate layer are fixed through the outer bonding layer, and the substrate layer and the inner weathering layer are fixed through the inner bonding layer. Layers of material are melted in different flow channels through employing the coextrusion process and directly extruded for molding, the operation process is simple, and the bonding layers are not easily separated. Through the manufacturing method, not only can the processing process be simplified, the manufactured backplane has excellent weatherability, mechanical performance and long-term stability, but also no organic solvent is utilized in the manufacturing process, and environmental protection is achieved.

Description

technical field [0001] The invention belongs to the field of solar cell backboards, and in particular relates to a PBT-containing five-layer structure co-extruded solar cell backboard and a preparation method thereof. Background technique [0002] In recent years, due to global environmental problems and the depletion of fossil fuels, solar energy has attracted widespread attention as a clean, pollution-free and most abundant renewable energy source. Solar cells are efficient devices that convert solar energy directly into electricity. Solar cells are exposed to long-term outdoor wind, rain, ultraviolet rays and other natural factors. The solar cell backsheet should use a backsheet with excellent weather resistance and durability, which is convenient for protecting the solar cell and prolonging its service life. [0003] At present, the mainstream solar cell backsheet in the market has a five-layer structure, the outer layer is made of fluorine-containing materials with exc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/049B32B7/12B32B27/08B32B27/18B32B27/20B32B27/30B32B27/32B32B27/36
CPCB32B7/12B32B27/08B32B27/18B32B27/20B32B27/304B32B27/32B32B27/36B32B2307/306B32B2307/552B32B2307/554B32B2307/734B32B2457/10B32B2457/12H01L31/049Y02E10/50
Inventor 顾方明赵黎李剑春
Owner 杭州福禧新材料有限公司
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