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

A technology of polyolefin and polyolefin resin, which is applied in the fields of polyolefin film and its preparation, solar battery backplane and solar battery, and can solve the problems of accelerating the decomposition of fluororesin, uneven distribution of fluorine elements, and poor weather resistance of polyolefin film, etc. problem, to achieve the effect of excellent adhesion and heat resistance, uniform distribution

Active Publication Date: 2022-06-24
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 and preparation method thereof, solar battery back sheet and solar battery
  • Polyolefin film and preparation method thereof, solar battery back sheet and solar battery
  • Polyolefin film and preparation method thereof, solar battery back sheet and solar battery

Examples

Experimental program
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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 arranged in layers.

[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, wherein ethylene propylene copolymer Material does not include random copolymer polypropylene.

[0064] The material composition for 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 master batch formed by the 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, 8...

Embodiment 2

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

[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 master batch, 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 master batch and 15 parts by weight of titanium dioxide.

[0071] The material composition for 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 is composed of antioxidant 1010 and antioxidant 168...

Embodiment 3

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

[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 master batch, 5 parts by weight of ethylene octene copolymer and 20 parts by weight of titanium dioxide.

[0076] The composition of materials for forming the second film layer includes: 15 parts by weight of polyethylene, 75 parts by weight of homopolypropylene, 10 parts by weight of master batch 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 master batch, 1 part by weight of titanium dioxide and 40 parts by weight of ethylene octene copolymer.

[0078] The master batch includes 50 parts by...

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Abstract

The invention provides a polyolefin film and a preparation method thereof, a solar battery back plate and a solar battery. The method for preparing a polyolefin film comprises 10 to 50 parts by weight of at least one of polyvinylidene fluoride and polyperfluoroethylene propylene, 50 to 90 parts by weight of polypropylene and / or polyethylene, 1 10 parts by weight of a compatibilizer and 1 to 20 parts by weight of an anti-aging agent are mixed, and the resulting mixture is made into a masterbatch; the polyolefin resin, the masterbatch and the inorganic filler are mixed and then carried out Extrusion treatment in order to obtain said polyolefin film. In the method, the inorganic filler is not easy to degrade the fluororesin, the temperature control window is wide, and the fluorine element distribution of the prepared polyolefin film is uniform, the thermal stability is strong, the ultraviolet resistance is good, and the yellowness index is low.

Description

technical field [0001] The present invention relates to the field of photovoltaic technology, in particular, to a polyolefin film and a preparation method thereof, a solar cell backsheet and a solar cell. Background technique [0002] At present, polyolefin films are usually used as the inner bonding layer for solar cell back sheets, and the processing temperature of polyolefin films 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 limit 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). Since part of the fluororesin will be decomposed by inorganic fillers, the distribution of fluorine elements will be uneven, and the local fluorine c...

Claims

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Application Information

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Patent Type & Authority Patents(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