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Laminated sheet and method for manufacturing same, solar cell back sheet, solar cell module, and method for manufacturing solar cell back sheet

A technology of solar cells and laminated sheets, applied in electrical components, other household appliances, chemical instruments and methods, etc., can solve the problems of acetic acid generation and easy deterioration of solar cell components, and achieve excellent adhesion and interlayer adhesion. excellent effect

Inactive Publication Date: 2015-08-05
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In addition, it is known that solar cell modules tend to deteriorate in high-temperature and high-humidity environments, and it is urgent to improve the resistance to heat and humidity
In particular, for sealing materials used in solar cell modules, EVA is often used from the viewpoint of weather resistance, transparency, productivity, etc., but there is a risk of acetic acid being generated due to high-temperature water vapor

Method used

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  • Laminated sheet and method for manufacturing same, solar cell back sheet, solar cell module, and method for manufacturing solar cell back sheet
  • Laminated sheet and method for manufacturing same, solar cell back sheet, solar cell module, and method for manufacturing solar cell back sheet
  • Laminated sheet and method for manufacturing same, solar cell back sheet, solar cell module, and method for manufacturing solar cell back sheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0160] Hereinafter, the present invention will be described with examples, but the present invention is not necessarily limited to these examples. In addition, the various characteristic evaluations described in this specification were performed as follows.

[0161] [Characteristic evaluation method]

[0162] (1) Layer thickness T1, T2, T3, T4, T5, T6, Ta, lamination ratio T4 / Ta

[0163] Follow the steps (A1) to (A4) below to find out. It should be noted that for the measurement, 10 locations were changed and the average value was recorded as the thickness of the P1 layer T1 (μm), the thickness of the P2 layer T2 (μm), the thickness of the P3 layer T3 (μm), and the P4 layer The thickness T4 (μm) of the P5 layer, the thickness T5 (μm) of the P5 layer, the thickness T6 (μm) of the P6 layer, and the thickness Ta (μm) of the entire sheet. Furthermore, the lamination ratio T4 / T6 was obtained using T4 and T6 obtained here.

[0164] (A1) Using a slicer, cut the laminated sheet (back plate...

Embodiment 25

[0343] For Example 25, "Nebene" (registered trademark) FLX80E4 manufactured by Sumitomo Chemical Co., Ltd. was used as PP1.

[0344] ?Acid modified polyolefin

[0345] As the resin constituting the P2 layer in Examples 1 to 26 and 57 to 72, “Madec” (registered trademark) P553A manufactured by Mitsubishi Chemical Corporation was used as the resin 1.

[0346] ?Polyolefin elastomer

Embodiment 24

[0347] For Example 24, as the polyolefin-based elastomer, “ノティオ” (registered trademark) PN2060 manufactured by Mitsui Chemicals Co., Ltd. was used as the elastomer 1.

[0348] ?Inorganic particles

[0349] As the inorganic particles of the P1 layer of Examples 1 to 5, 7 to 26, 57 to 72, Comparative Example 1, and the P3 layer of Examples 1 to 9, 11 to 26, and Comparative Example 2, titanium dioxide was used. In addition, for the titanium dioxide of the P1 layer, for each of the Examples and Comparative Examples, a masterbatch made of the resin used as the main constituent of the P1 layer and titanium dioxide in a ratio of 50% by mass / 50% by mass was performed to achieve the desired concentration. Add to. For the titanium dioxide of the P3 layer, for each of the Examples and Comparative Examples, a masterbatch made of the resin used as the main constituent of the P3 layer and titanium dioxide in a ratio of 30% by mass / 70% by mass was added so that the desired concentration was reac...

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Abstract

A laminated sheet having: a layer having a polybutylene terephthalate resin as a principal component (P1 layer); and a layer having a polyolefin resin as a principal component (P3 layer). A solar cell back sheet, characterized in that the acetic acid permeability (Pa) (g / m2 / day) at 85°C and water vapor permeability (Pw) (g / m2 / day) at 40°C 90% RH satisfy relationships (1) 200 ≤ Pa and (2) Pw ≤ 2.5. Provided are a laminated sheet having a better moist heat resistance and an improved capacity to obtain both heat resistance and adhesion performance with respect to a sealing member compared with a conventional laminated sheet in which a polybutylene terephthalate resin is used, and a method for manufacturing the laminated sheet. Also provided are a solar cell module back sheet that is inexpensive and that is capable of preventing discoloration of the collector electrode of a solar cell while maintaining the power generation characteristics of the solar cell module over a long period, and a method for manufacturing the solar cell module back sheet.

Description

Technical field [0001] The present invention relates to a laminated sheet that can achieve both durability and adhesion to a sealing material. In particular, it relates to a laminated sheet that can be suitably used as a back sheet for solar cells, and a method for manufacturing the laminated sheet. Furthermore, it relates to a back sheet that contributes to improving the long-term reliability of the solar cell module. Background technique [0002] In recent years, solar power generation has attracted attention as a semi-permanent and pollution-free next-generation energy source, and solar cells are rapidly spreading. The solar cell is constructed as follows: the power generation element is sealed with a transparent sealing material such as ethylene-vinyl acetate copolymer (EVA) and then bonded to a transparent substrate such as glass and a resin sheet called a back sheet , Thus constitute. Sunlight passes through the transparent substrate and is introduced into the solar cell...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/36H01L31/049
CPCY02E10/50B32B2250/24B32B27/32B32B27/36B32B27/08B32B2457/12H01L31/049
Inventor 堀江将人巽规行柴田优高桥弘造荒井崇网冈孝夫
Owner TORAY IND INC
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