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High-insulation moisture-resistant back panel for crystal silicon photovoltaic module packaging

A technology for encapsulation and high insulation of photovoltaic modules, applied in photovoltaic power generation, electrical components, lamination devices, etc., can solve the problems of inability to take into account the comprehensive performance of high insulation and moisture resistance, poor insulation performance, and complicated preparation processes, so as to ensure long-term Reliability, interface delamination reduction, and comprehensive performance optimization effects

Active Publication Date: 2016-06-01
HANGZHOU FIRST APPLIED MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a layer of metal barrier layer is needed to achieve better moisture barrier performance. For example, CN101740643B reports a low-shrinkage, high-barrier back film with a 7-layer structure, which has good dimensional stability and barrier properties, but the preparation process It is complex and contains a metal film inside, and has poor insulation performance. It cannot take into account the comprehensive performance of high insulation and moisture resistance, and is not suitable for high-voltage systems.

Method used

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  • High-insulation moisture-resistant back panel for crystal silicon photovoltaic module packaging
  • High-insulation moisture-resistant back panel for crystal silicon photovoltaic module packaging

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] The backplane manufacturing process is as follows:

[0056] First, 85 wt% of polyethylene terephthalate (DuPont, USA), 10 wt% of iron chrome black (Sheeter, USA), 4 wt% of hydrolysis stabilizer P400 (Germany Rheinland Chemical Company), anti-thermal oxidation aging agent 2,6-Di-tert-butyl-4-methylphenol (Shenghe Chemical Co., Ltd.) 1wt%, mixed uniformly and melted at 250-300℃, then cast into a film, and biaxially stretched to obtain a thickness of 50 microns the support layer film.

[0057] In the second step, a 30-micron thick weather-resistant topcoat was rolled on one side of the support layer. The ingredients of the outer layer coating are 90wt% of fluororesin GK570 (Japan Daikin Co., Ltd.), 5wt% of carbon black MA-11 (Japan Mitsubishi Co., Ltd.), and 4.5wt% of cross-linking agent hexamethylene diisocyanate trimer (Germany Bayer Co., Ltd.) , the catalyst bis-dimethylaminoethyl ether (Jiubang Chemical Co., Ltd.) 0.5wt%. The raw materials are uniformly dispersed in...

Embodiment 2

[0061] The backplane manufacturing process is as follows:

[0062] First, polybutylene terephthalate (DSM, Netherlands) 80wt%, talc (Changxing Longfeng Powder Materials Co., Ltd.) 15wt%, hydrolysis stabilizer phenyl glycidyl ether (Hongyu Chemical Co., Ltd.) 4.9 wt%, anti-thermal oxygen aging agent 3,9-dioctadecyloxy-2,4,8,10-tetraoxo-3,9-diphosphospiro[5.5]undecane (Taiwan Yongguang Chemical Co., Ltd.) 0.1 wt %, mixed uniformly and melted at 250-300 DEG C, then cast to form a film, and biaxially stretched to obtain a 200-micron-thick support layer film.

[0063] Then, a 10-micron thick weather-resistant topcoat was roll-coated on one side of the support layer. The outer coating ingredients are 80wt% of fluororesin LF200 (Asahi Glass Co., Japan), 10wt% of titanium dioxide TR81 (Huntsman Co., USA), 5wt% of cross-linking agent isophorone diisocyanate prepolymer (Bayer, Germany) and methyl alcohol. Etherified polymethylol melamine resin (Huate Chemical Co., Ltd.) 4 wt %, cataly...

Embodiment 3

[0067] The backplane manufacturing process is as follows:

[0068] First, 80wt% of polyethylene terephthalate (DSM, Netherlands), 11.9wt% of filler mica powder (Fengshuo Chemical Co., Ltd.), 8wt% of hydrolysis stabilizer P400 (Germany Rheinland Chemical Co., Ltd.), 2 '-Methylenebis-(4-methyl-6-tert-butylphenol) (BASF, Germany) 0.1 wt%, mixed uniformly and melted at 250-300 °C, then cast into a film, biaxially stretched A 150 micron thick support layer film was produced.

[0069]Then, a 20-micron thick weather-resistant topcoat was roll-coated on one side of the support layer. The outer coating ingredients are fluororesin 41088 (Changxing Chemical) 68.2wt%, titanium dioxide CR-60-2 (Japan Ishihara Co.) 20wt% and anti-scratch powder (Botong Chemical Co., Ltd.) 10wt%, cross-linking agent hexamethylene Base diisocyanate trimer (Bayer, Germany) 1 wt%, catalyst dibutyltin dilaurate (Sinopharm Reagent Co.) 0.8 wt%. The raw materials are uniformly dispersed in solvents such as keto...

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Abstract

The invention relates to a high-insulation moisture-resistant back panel for crystal silicon photovoltaic module packaging, and belongs to the field of photovoltaic packaging materials. The back panel is composed of an inner insulation layer, a moisture-resistant layer, a supporting layer and an outer weather-resistant layer in sequence from inside to outside. The manufactured back panel has excellent insulativity and water vapor barrier property, and also has excellent mechanical strength, heat resistance and long-term weather resistance. The back panel is simple in process and stable in product performance, and is an excellent photovoltaic back panel of a crystal silicon photovoltaic module suitable for being mounted in a high-voltage system in a humid area.

Description

technical field [0001] The invention relates to a high-insulation and moisture-resistant backplane for encapsulating crystalline silicon components, belonging to the field of photovoltaic encapsulation materials. Background technique [0002] Photovoltaic power generation is the process of directly converting solar radiation energy into electrical energy using the photoelectric effect. The basic device of light-to-electricity conversion is the solar cell, which has three advantages of permanence, cleanliness and flexibility. Due to the long service life of solar cells, as long as the sun exists, solar cells can be used for a long time with one investment. Compared with thermal power generation and nuclear power generation, solar cells do not cause environmental pollution, so they are favored by enterprises and organizations in various countries and have broad development prospects. . [0003] The photovoltaic power generation system consists of a solar cell group, a solar ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/08B32B27/18B32B27/28B32B37/15H01L31/048H01L31/049C09D127/12C09D133/02C09D123/08C09D133/26C09D129/04C09D7/12
CPCY02E10/50B32B27/08B32B27/18B32B27/28B32B37/153B32B2250/04B32B2307/206B32B2307/73C08K3/04C08K3/30C08K3/346C08K2003/3045C08L2203/206C08L2205/03C09D7/61C09D7/65C09D123/0815C09D127/12C09D129/04C09D133/02C09D133/26H01L31/0481H01L31/049C08L61/32C08L75/04C08K2003/2241C08K2003/2224C08K7/14
Inventor 林维红梅云宵郑炯洲王伟周光大林建华
Owner HANGZHOU FIRST APPLIED MATERIAL CO LTD
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