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Solar cell back film

A solar cell and back film technology, which is applied in the direction of circuits, photovoltaic power generation, electrical components, etc., can solve problems such as complicated procedures, adverse health effects of operators, and shedding, so as to simplify the production process, increase production capacity and finished product pass rate, and eliminate The effect of backplane defect rate

Active Publication Date: 2021-11-02
CHANGZHOU HUITIAN NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, first apply glue on one surface of the PET film and compound a layer of film, and then apply glue on the other surface of the PET film and compound another layer of film. The process is more complicated, and a lot of labor is required in the operation. The health of the body will also have adverse effects, and separation and shedding will also occur during long-term use

Method used

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  • Solar cell back film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] The outer layer comprises polyethylene terephthalate, high density polyethylene, thermoplastic resin, polyamide and acrylic resin, consisting of the following parts by weight:

[0056] Polyethylene terephthalate 85 parts

[0057] High-density polyethylene 12 parts

[0058] 3 parts thermoplastic resin

[0059] Polyamide 2 parts

[0060] Acrylic resin 5 parts

[0061] The middle layer comprises polypropylene, polymethyl methacrylate, engineering plastics, acrylic resin, antioxidant and polystyrene grafted maleic anhydride, consisting of the following parts by weight:

[0062] Polypropylene 95 parts

[0063] 8 parts polymethyl methacrylate

[0064] Engineering plastic 3 parts

[0065] 4 parts acrylic resin

[0066] Antioxidant 0.5 part

[0067] Polystyrene grafted maleic anhydride 3 parts

[0068] The inner layer includes linear low density polyethylene, carbon black, UV absorber, light stabilizer, antioxidant and acrylate, consisting of the following parts by wei...

Embodiment 2

[0077] The outer layer comprises polyethylene terephthalate, high density polyethylene, thermoplastic resin, polyamide and acrylic resin, consisting of the following parts by weight:

[0078] Polyethylene terephthalate 90 parts

[0079]High-density polyethylene 12 parts

[0080] 4 parts thermoplastic resin

[0081] 3 parts polyamide

[0082] 4 parts acrylic resin

[0083] The middle layer comprises polypropylene, polymethyl methacrylate, engineering plastics, acrylic resin, antioxidant and polystyrene grafted maleic anhydride, consisting of the following parts by weight:

[0084] Polypropylene 92 parts

[0085] 8 parts polymethyl methacrylate

[0086] Engineering plastic 3 parts

[0087] Acrylic resin 5 parts

[0088] Antioxidant 1 part

[0089] Polystyrene grafted maleic anhydride 2 parts

[0090] The inner layer includes linear low density polyethylene, carbon black, UV absorber, light stabilizer, antioxidant and acrylate, consisting of the following parts by weight...

Embodiment 3

[0099] The outer layer comprises polyethylene terephthalate, high density polyethylene, thermoplastic resin, polyamide and acrylic resin, consisting of the following parts by weight:

[0100] Polyethylene terephthalate 88 parts

[0101] 13 parts of high-density polyethylene

[0102] Thermoplastic resin 5 parts

[0103] Polyamide 2 parts

[0104] 6 parts acrylic resin

[0105] The middle layer comprises polypropylene, polymethyl methacrylate, engineering plastics, acrylic resin, antioxidant and polystyrene grafted maleic anhydride, consisting of the following parts by weight:

[0106] Polypropylene 92 parts

[0107] 8 parts polymethyl methacrylate

[0108] Engineering plastic 3 parts

[0109] 4 parts acrylic resin

[0110] Antioxidant 1 part

[0111] Polystyrene grafted maleic anhydride 4 parts

[0112] The inner layer includes linear low density polyethylene, carbon black, UV absorber, light stabilizer, antioxidant and acrylate, consisting of the following parts by we...

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Abstract

The invention relates to the technical field of back film, in particular to a solar cell back film. The outer layer of the solar cell back film includes polyethylene terephthalate, high-density polyethylene, thermoplastic resin, polyamide and acrylic resin, and the middle layer includes polypropylene, polymethyl methacrylate, engineering plastics, acrylic resin , antioxidant and polystyrene as maleic anhydride, the inner layer includes linear low density polyethylene, carbon black, UV absorber, light stabilizer, antioxidant and acrylate. This kind of solar cell back film simplifies the production process of the back sheet manufacturer, reduces the process of coating glue, and granulates through the twin-screw extruder. After the structure is laminated, high-temperature rollers are used for grafting reaction, and then co-extruded to obtain a three-layer laminated solar back sheet, which eliminates the defect rate of the back sheet caused by improper glue control, and can greatly improve the production capacity of the back sheet and the finished product Pass rate.

Description

technical field [0001] The invention relates to a back film, in particular to a solar cell back film. Background technique [0002] As an important packaging material for solar cells, solar backsheets play a vital role in protecting battery life. The solar backsheet is located on the back of the solar panel, which protects and supports the battery sheet, and has reliable insulation, water resistance, and aging resistance. It generally has a three-layer structure, the outer protective layer has good environmental erosion resistance, and the three-layer films are bonded with adhesives. That is, first apply glue on one surface of the PET film and compound a layer of film, and then apply glue on the other surface of the PET film and compound another layer of film. The process is more complicated, and a lot of labor is required in the operation. It will also have adverse effects on your health, and separation and shedding will also occur during long-term use. Contents of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08L23/06C08L77/00C08L33/00C08L23/12C08L33/12C08L51/00C08L23/08C08L81/02C08K3/04B32B27/08B32B27/18B32B27/32B32B27/36H01L31/049
CPCY02E10/50
Inventor 何甜甜丁律
Owner CHANGZHOU HUITIAN NEW MATERIALS