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Black infrared reflection polyvinylidene fluoride (PVDF) solar cell rear panel composite film and manufacturing method thereof

A polyvinylidene fluoride, solar cell technology, applied in chemical instruments and methods, circuits, photovoltaic power generation, etc., can solve the problem of accelerating the thermal oxygen aging of polymer materials in the backplane, the heat storage temperature of the solar backplane film, and the film Problems such as poor dielectric breakdown characteristics, to achieve the effects of easy control, high solar coverage, and high infrared reflection characteristics

Active Publication Date: 2014-06-04
江苏昊华光伏科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the certain conductivity of carbon black, the film made of it has poor dielectric breakdown characteristics.
Outdoors, because it strongly absorbs the infrared light in the solar energy, the temperature of the solar backplane film increases due to heat accumulation, which accelerates the thermal oxygen aging of the polymer material in the backplane, reduces various performances, and shortens the service life.

Method used

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  • Black infrared reflection polyvinylidene fluoride (PVDF) solar cell rear panel composite film and manufacturing method thereof
  • Black infrared reflection polyvinylidene fluoride (PVDF) solar cell rear panel composite film and manufacturing method thereof
  • Black infrared reflection polyvinylidene fluoride (PVDF) solar cell rear panel composite film and manufacturing method thereof

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Embodiment Construction

[0029] The components applied in the embodiments of the present invention are (but not limited to using the following components):

[0030] Black CICP: 10C909, black powder, total solar reflectance (TSR): 24%, average particle size 1.4μ. From the Shepherd Color Company in the United States, the surface is silanized before use.

[0031]Titanium dioxide: Ti-Pure350, nano-sized rutile titanium dioxide with an average particle size of 500nm, the surface has been treated with aluminum oxide, silicon dioxide and silanization, obtained from DuPont Company.

[0032] PVDF resin is a VDF homopolymer with a melt flow index of 8-15g / 10min (230°C, 5Kg), obtained from domestic Sanaifu Company.

[0033] PMMA resin: PLEXIGLS 8N, with a melt flow index of 3g / 10min (230°C, 3.8Kg), obtained from Evonik Rohm, Germany.

[0034] ACR process aid: P551 from Arkema.

[0035] Dispersant: N,N'-ethylenebisstearamide (EBS), melting point 130℃~145℃.

[0036] Heat stabilizer: rare earth / calcium / zinc com...

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Abstract

The invention discloses a black infrared reflection polyvinylidene fluoride (PVDF) solar cell rear panel composite film and a manufacturing method thereof. The composite film comprises a first layer facing air and a second layer under the first layer, wherein the material of the first layer is a complex A which is filled with black CICP based on PVDF / polymethyl methacrylate (PMMA) blended resin; the material of the second layer is a complex B which is filled with a mixture of non-composite inorganic pigments and black CICP based on the PVDF / PMMA blended resin; the complex A and the complex B are subjected to molten co-extrusion to prepare the composite film with the A / B structure. The preparation process is simple, convenient, safe and reliable and is easily controlled, the prepared film can meet the service requirements of solar rear panel films in aspects of shading property, weather resistance, water vapor barrier property, mechanical performance and the like, and the composite film with the thickness of 30 microns has over 90 percent of solar shading rate and high infrared reflection characteristics.

Description

technical field [0001] The invention relates to a composite film of a solar battery back plate, in particular to a black infrared reflection polyvinylidene fluoride solar battery back plate composite film. The present invention also relates to a method for manufacturing the polyvinylidene fluoride solar cell back plate composite film filled with the above-mentioned black infrared reflective inorganic pigment. Background technique [0002] Polyvinylidene fluoride (PVDF) is a polymer material with excellent performance. The film prepared with it has weather resistance, chemical corrosion resistance, water vapor resistance, electrical insulation and good mechanical properties. However, since PVDF is a colorless semi-crystalline fluorine-containing polymer, the film made of pure PVDF has high light transmittance to ultraviolet light (UV), and cannot adhere to the PET / PVDF, EVA / PVDF interface in the solar cell module. The bonding layer and PET, EVA and other materials play a pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/28H01L31/049C08L27/16C08L33/12C08K13/06C08K9/06C08K3/22
CPCY02E10/50
Inventor 龚福根龚之雯梅龙
Owner 江苏昊华光伏科技有限公司
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