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Polyolefin film, preparation method thereof, solar battery back plate and solar battery

A technology of solar cells and polyolefins, applied in chemical instruments and methods, circuits, photovoltaic power generation, etc., can solve the problems of uneven distribution of fluorine elements, poor weather resistance of polyolefin films, low fluorine content, etc., and achieve uniform distribution , and excellent heat resistance, excellent adhesion effect

Active Publication Date: 2019-06-28
乐凯胶片股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the processing temperature is above 200°C, the inorganic filler (mainly titanium dioxide) will significantly accelerate the decomposition of the fluororesin, which will severely restrict the processing method and temperature control window of the polyolefin film. The film turns yellow; in addition, the fluororesin is directly added in the form of polyvinylidene fluoride (PVDF), because part of the fluororesin will be decomposed by the inorganic filler, resulting in uneven distribution of fluorine element, low local fluorine content or even no fluorine element, As a result, the weather resistance of polyolefin films deteriorates
[0003] Thereby, the relevant technology of existing polyolefin film still needs to be improved

Method used

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  • Polyolefin film, preparation method thereof, solar battery back plate and solar battery
  • Polyolefin film, preparation method thereof, solar battery back plate and solar battery
  • Polyolefin film, preparation method thereof, solar battery back plate and solar battery

Examples

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Effect test

Embodiment 1

[0062] The polypropylene film includes a first film layer, a second film layer and a third film layer which are stacked.

[0063] The material composition for forming the first film layer includes: 30 parts by weight of polyethylene, 70 parts by weight of random copolymerized polypropylene, 40 parts by weight of masterbatch, 20 parts by weight of ethylene propylene copolymer and 8 parts by weight of titanium dioxide.

[0064] The composition of the material forming the second film layer includes: 15 parts by weight of polyethylene, 85 parts by weight of homopolypropylene, 20 parts by weight of titanium dioxide, and 6 parts by weight of a masterbatch formed from a mixture of antioxidant 1010 and antioxidant 168 .

[0065] The material composition for forming the third film layer includes: 20 parts by weight of polyethylene, 10 parts by weight of ethylene propylene copolymer, 80 parts by weight of block copolymerized polypropylene, 12 parts by weight of titanium dioxide and 10 p...

Embodiment 2

[0068] The polypropylene film includes a first film layer, a second film layer and a third film layer which are stacked.

[0069] The material composition for forming the first film layer includes: 25 parts by weight of polyethylene, 75 parts by weight of random copolymerized polypropylene, 20 parts by weight of masterbatch, 15 parts by weight of ethylene octene copolymer and 1 part by weight of titanium dioxide.

[0070] The material composition for forming the second film layer includes: 20 parts by weight of polyethylene, 75 parts by weight of block copolymerized polypropylene, 5 parts by weight of masterbatch and 15 parts by weight of titanium dioxide.

[0071] The composition of the material forming the third film layer includes: 20 parts by weight of polyethylene, 70 parts by weight of random copolymerized polypropylene, 5 parts by weight of ethylene octene copolymer, 20 parts by weight of titanium dioxide and composed of antioxidant 1010 and antioxidant 168 10 parts by ...

Embodiment 3

[0074] The polypropylene film includes a first film layer, a second film layer and a third film layer which are stacked.

[0075] The material composition for forming the first film layer includes: 45 parts by weight of polyethylene, 55 parts by weight of random copolymerized polypropylene, 1 part by weight of masterbatch, 5 parts by weight of ethylene octene copolymer and 20 parts by weight of titanium dioxide.

[0076] The material composition for forming the second film layer includes: 15 parts by weight of polyethylene, 75 parts by weight of homopolypropylene, 10 parts by weight of masterbatch and 1 part by weight of titanium dioxide.

[0077] The material composition for forming the third film layer includes: 25 parts by weight of polyethylene, 70 parts by weight of block polypropylene, 5 parts by weight of masterbatch, 1 part by weight of titanium dioxide and 40 parts by weight of ethylene octene copolymer.

[0078] Wherein, the masterbatch includes 50 parts by weight of...

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Abstract

The invention provides a polyolefin film, a preparation method thereof, a solar battery back plate and a solar battery. The method of preparing the polyolefin film comprises the steps of mixing at least one of 10-50 parts by weight of polyvinylidene fluoride and a tetrafluoroethylene-hexafluoropropylene copolymer, 50-90 parts by weight of polypropylene / polyethylene and 1-10 parts by weight of a compatilizer and 1-20 parts by weight of an antiageing agent and preparing masterbatch from the obtained mixture; and extruding the mixed polyolefin resin, masterbatch and inorganic filler to obtain thepolyolefin film. The inorganic filler in the method is hard to degrade fluororesin and is wide in temperature control window. The prepared polyolefin film is uniform in distribution of fluorine, highin thermal stability, good in anti-ultraviolet performance and low in yellow index.

Description

technical field [0001] The invention relates to the field of photovoltaic technology, in particular to a polyolefin film and a preparation method thereof, a solar battery back plate and a solar battery. Background technique [0002] At present, polyolefin film is usually used as the inner adhesive layer for solar battery backsheets, and the processing temperature of polyolefin film is generally 190-270°C due to different processing methods. However, when the processing temperature is above 200°C, the inorganic filler (mainly titanium dioxide) will significantly accelerate the decomposition of the fluororesin, which will severely restrict the processing method and temperature control window of the polyolefin film. The film turns yellow; in addition, the fluororesin is directly added in the form of polyvinylidene fluoride (PVDF), because part of the fluororesin will be decomposed by the inorganic filler, resulting in uneven distribution of fluorine element, low local fluorine ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/14C08L23/06C08L23/16C08L23/12C08L53/00C08L27/16C08L51/06C08K3/22C08J5/18C08J3/22B32B27/06B32B27/20B32B27/32B32B33/00H01L31/048H01L31/049
CPCY02E10/50
Inventor 白玉清范云峰孟丹李华锋柳青
Owner 乐凯胶片股份有限公司