Polymer back panel of solar battery assembly and manufacture method of polymer back panel

A technology of solar cells and polymers, applied in electrical components, chemical instruments and methods, circuits, etc., can solve problems such as difficult packaging, poor barrier properties, and poor heat resistance

Active Publication Date: 2012-07-11
DSM SUNSHINE SOLAR TECH (SUZHOU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] (1) The melt strength is poor, and it is easy to flow during processing;
[0015] (2) Low crystallization speed and poor impact resistance;
[0016] (3) High-frequency heat sealing is more difficult, which brings great difficulties to packaging;
[0017] (4) Poor barrier property, easy to cause gas penetration;
[0018] (5) It is easy to be scratched and lacerated during transportation;
[0019] (6) Poor heat resistance

Method used

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  • Polymer back panel of solar battery assembly and manufacture method of polymer back panel

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Experimental program
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Effect test

Embodiment 1

[0079] Using ordinary extrusion-grade polyvinylidene fluoride PVDF plastic particles, adding 15% polymethyl methacrylate PMMA and 5% surface-treated titanium dioxide TiO 2 , Extrude, mix and granulate through a twin-screw extruder at a temperature of about 200°C to obtain PVDF mixture plastic particles. Use ethylene-butyl acrylate EBA as the first adhesive layer, add 5% of titanium dioxide, 1% of silane coupling agent, and 0.5% of light stabilizer and anti-aging agent and mix uniformly in a common mixer to obtain an EBA mixture. Common nylon 12 is used as the base material.

[0080] The mixture of PVDF, nylon 12 and EBA is melted and co-extruded through a multi-layer extruder, and the extrusion temperature is 270°C, thereby obtaining a four-layer laminated film of PVDF / EBA / Nylon12 / EBA, and the thickness of the four layers is 20 / 20 / 200 / 80 microns.

[0081] The PVDF / EBA / Nylon12 / EBA solar cell module back sheet thus produced has a total thickness of 320 microns.

[0082] The ...

Embodiment 2

[0088] Using ordinary extrusion-grade polyvinylidene fluoride PVDF plastic particles, adding 5% polymethyl methacrylate PMMA and 5% surface-treated titanium dioxide TiO 2 , Extrude, mix and granulate through a twin-screw extruder at a temperature of about 200°C to obtain PVDF mixture plastic particles. Ethylene-butyl acrylate EBA and polymethyl methacrylate are used as the adhesive layer, and nylon 12 and Nylon12 are used as the base material.

[0089] Four extruders of PVDF, PMMA, EBA and Nylon12 were melted and co-extruded, and the extrusion temperature was 270°C, thereby obtaining a seven-layer laminated film of PVDF / PMMA / EBA / Nylon12 / EBA / PMMA / EBA / PVDF, and the thickness of the seven layers was respectively For 20 / 20 / 20 / 200 / 20 / 20 / 20 microns. The PVDF / PMMA / EBA / Nylon12 / EBA / PMMA / EBA / PVDF back sheet of the solar cell module thus produced has a total thickness of 320 microns.

[0090] The peel strength between the PVDF and nylon 12 layers in the back sheet was tested, and the r...

Embodiment 3

[0096] Common extrusion-grade tetrafluoroethylene and hexafluoroethylene copolymer FEP plastic particles are used, and 5% of surface-treated titanium dioxide TiO2 is added to extrude the cast film through a twin-screw extruder at a temperature of about 360°C. The thickness is 20 microns. The thermoplastic polyurethane TPU mixture is used as the adhesive layer, 1% of silane coupling agent, 30% of ethylene-butyl acrylate EBA, and 0.5% of light stabilizer and anti-aging agent are added to TPU, mechanically mixed in an ordinary mixer, and extruded by twin-screw Machine extrusion compounding granulation to obtain TPU mixture.

[0097] Nylon 12 is melt-blended with 50% polypropylene PP, and 5% maleic anhydride grafted polypropylene MAH-PP is added as a compatibilizer, and the nylon blend is obtained by compounding and granulating through a twin-screw extruder.

[0098] Melt and co-extrude the three-layer film TPU / Nylon12 / TPU onto the FEP film through a multi-layer extruder to melt ...

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Abstract

The invention provides a polymer back panel of a solar battery assembly. The polymer back panel comprises a base film layer, binding layers on both sides of the base film layer, a fourth thin film layer and a fifth thin film layer on the other two sides of the binding layers, wherein the base film layers contain at least one of the following components: polyamide polymers, polypropylene and acrylic polymers, polyethylene and ethylene polymers, polyvinylidene chloride, styrene polymers, ABS (acrylonitrile butadiene styrene) resins, liquid crystal polymers, acrylic acid polymers, polyphenyl ether, polycarbonate and polymer alloy of polycarbonate and poly(C2-6 alkal terephthalate). In addition, the invention also provides a manufacture method of the back panel. By adopting a thin film structure made of one or more of the above polymers to substitute for the conventional PET (polyethylene terephthalate) layer, the polymer back panel has excellent processing formation performance, material mechanical performance, barrier performance and anti-aging performance; and a back panel laminated film can be prepared by molten co-extrusion or extrusion composite process, with the advantages of significantly improved bonding strength between the films and simplified production process.

Description

technical field [0001] The invention relates to a polymer backboard of a solar battery module, in particular to a polymer intermediate layer and an adhesive layer of the polymer backboard of a solar battery module, and a preparation method thereof. Background technique [0002] At present, the main energy for human beings comes from fossil energy, including oil, coal and natural gas, but in the next hundred years or so, fossil energy will be exhausted, and in the process of using fossil energy, a large amount of carbon dioxide will be emitted, changing the atmosphere Composition of gases, causing the deterioration of the earth's climate. Green renewable energy without environmental pollution is the only way to solve human energy challenges and low carbon emissions. Solar power is one of the most important green renewable energy sources. At present, all countries in the world regard the development of solar power generation as a national energy strategy, and vigorously enco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/048H01L31/18B29C48/154B29C48/21B29C48/22
CPCC08K2003/2241B29C47/0004B32B2250/03B29C47/061B29C47/025H01L31/0487Y02E10/50C08L77/02C08L77/06B32B27/08B32B5/00B29C47/067B29C47/065H01L31/0481B29K2077/00H01L31/049B29C48/022B29C48/154B29C48/21Y10T428/266Y10T428/31743Y10T428/3154Y10T428/31928Y10T428/31576Y10T428/31786Y10T428/31739Y10T428/31938Y10T428/31924Y10T428/31935Y10T428/31931Y10T428/31562Y10T428/31507Y10T428/31587Y10T428/31544B29C48/22B29C48/185
Inventor 刘学习
Owner DSM SUNSHINE SOLAR TECH (SUZHOU) CO LTD
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