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

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: 2017-09-26
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, method for producing same, back sheet for solar cell, solar cell module, and method for manufacturing back sheet for solar cell
  • Laminated sheet, method for producing same, back sheet for solar cell, solar cell module, and method for manufacturing back sheet for solar cell
  • Laminated sheet, method for producing same, back sheet for solar cell, solar cell module, and method for manufacturing back sheet for solar cell

Examples

Experimental program
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Effect test

Embodiment

[0160] Hereinafter, although an Example is given and demonstrated about this invention, this invention is not necessarily limited to these Examples. In addition, various characteristic evaluations described in this specification were performed as follows.

[0161] [Evaluation method of characteristics]

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

[0163] Follow the steps (A1) to (A4) below to obtain it. It should be noted that, regarding the measurement, 10 positions were changed and the average values ​​were recorded as the thickness T1 (μm) of the P1 layer, the thickness T2 (μm) of the P2 layer, the thickness T3 (μm) of the P3 layer, and the thickness of 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 calculated|required using T4 and T6 obtained here.

[0164] (A1) U...

Embodiment 25

[0343] For Example 25, "Norburen" (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, “Modick” (registered trademark) P553A manufactured by Mitsubishi Chemical Corporation was used as resin 1 .

[0346] ・Polyolefin-based elastomer

Embodiment 24

[0347] In Example 24, as the elastomer 1, "Notio" (registered trademark) PN2060 manufactured by Mitsui Chemicals was used as the polyolefin-based elastomer.

[0348] ・Inorganic particles

[0349] Titanium dioxide was used as the inorganic particles of the P1 layer of Examples 1 to 5, 7 to 26, 57 to 72, and Comparative Example 1, and the P3 layer of Examples 1 to 9, 11 to 26, and Comparative Example 2. In addition, regarding the titanium dioxide of the P1 layer, for each of the examples and comparative examples, a masterbatch prepared in a ratio of 50% by mass / 50% by mass of the resin used as the main constituents of the P1 layer and titanium dioxide was carried out so that the desired concentration was obtained. Add to. Titanium dioxide in the P3 layer was added in such a manner that the desired concentration was achieved in a masterbatch made of the resin used as the main constituents of the P3 layer and titanium dioxide at a ratio of 30% by mass / 70% by mass for each of the ...

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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 capable of achieving both durability and adhesiveness to a sealing material. In particular, it relates to a laminated sheet which can be suitably used as a backsheet for solar cells, and a method for producing the laminated sheet. Furthermore, it relates to the back sheet which contributes to improving the long-term reliability of a solar cell module. Background technique [0002] In recent years, as a semi-permanent and pollution-free next-generation energy source, solar power generation has attracted much attention, and solar cells are rapidly becoming popular. A solar cell is constructed by sealing the power generation element with a transparent sealing material such as ethylene-vinyl acetate copolymer (EVA), and bonding it to a transparent substrate such as glass and a resin sheet called a back sheet. , thus constituted. Sunlight is introduced into the solar cell through the transparent substrat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/36H01L31/049
CPCB32B27/08B32B27/32B32B27/36B32B2250/24B32B2457/12H01L31/049Y02E10/50
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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