Solar cell back panel

A technology for solar cells and back sheets, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of performance degradation, easy hydrolysis, and increased weather resistance of polyester adhesive layers, and achieve difficult problems in improving production and processing performance. Excellent damp heat aging performance and excellent UV aging resistance

Active Publication Date: 2015-04-01
乐凯胶片股份有限公司
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, the cost of traditional composite materials is high, and the production process is complicated. On the other hand, adhesives are used to bond layers between layers, which is prone to delamination after aging; polyester bonding layer and insulation The PET

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0034] Example 1

[0035] Hydroxy acrylic resin Q 182 200g

[0036] HDI dimer N 100 23g

[0037] Butyl acetate 160g

[0038] Matting powder HK 460 0.5g

[0039] Titanium dioxide 80g;

[0040] In a container equipped with a stirring device, add 200g of hydroxy acrylic resin Q182 made by Mitsui Chemicals Co., Ltd., Tg=45℃, OH value 45mgKOH / g), 160g of butyl acetate solvent and 0.5g of surface-modified n-propanol HK460 matting powder (manufactured by Degussa, D=7μm), 80g titanium dioxide, stirred for 20 minutes and filtered, then added 23g isocyanate HDI dimer N100 (manufactured by Bayer Materialscience, Germany), continue to stir for 20 minutes, and then filter. The adhesive layer coating liquid was obtained.

[0041] Coat the adhesive layer coating liquid on one side of the cleaned and corona-treated substrate PET film by gravure coating, and dry it at 140°C for 3 minutes to obtain an 8μm adhesive layer; then on the other side of the substrate The weathering layer is formed by coating o...

Example Embodiment

[0042] Example 2

[0043] Hydroxy acrylic resin EPA 5860 200g

[0044] IPDI Trimer Z 4470BA 22.4g

[0045] Ethyl acetate 160g

[0046] Matting powder SY 622 6g

[0047] Titanium dioxide 100g;

[0048] Add 200g of hydroxy acrylic resin EPA5860 (manufactured by Daicel Co., Ltd., Tg=12℃, OH value 27mgKOH / g), 160g ethyl acetate solvent and 6g n-hexanol surface modified SY622 into a container equipped with a stirring device (Made by Grace, USA, D=17μm), 100g of titanium dioxide, stirred for 20 minutes and filtered, then 22.4g of IPDI trimer Z 4470BA (manufactured by Bayer Materialscience, Germany) was added, and after stirring for 20 minutes, filtered to obtain a bond Layer coating liquid.

[0049] Coat the adhesive layer coating liquid on one side of the cleaned and corona treated substrate PET film by gravure coating, and dry at 90°C for 4 minutes to obtain a 20μm adhesive layer; then on the other side of the substrate The weather-resistant layer is formed by coating or compounding, and t...

Example Embodiment

[0050] Example 3

[0051] Hydroxy acrylic resin AC-1164A 120g

[0052] IPDI Trimer Z 4470BA 4g

[0053] Butanone 80g

[0054] Matting powder ED 5 3g

[0055] Titanium dioxide 50g;

[0056] Add 120g hydroxy acrylic resin AC-1164A (manufactured by Foshan Gaoming Tongde Chemical Co., Ltd., Tg=15℃, OH value 12mgKOH / g), 80g methyl ethyl ketone solvent and 3g n-hexanol surface modification Sexually treated matting powder ED 5 (Grace Company, USA, D=9μm), 50g titanium dioxide, stir for 20 minutes and filter, then add 4g isocyanate IPDI trimer Z 4470BA (manufactured by Bayer Materialscience), continue stirring for 20 minutes , Filter to obtain the adhesive layer coating liquid.

[0057] Coat one side of the cleaned and corona-treated PET film with the above-mentioned adhesive layer coating solution by gravure coating, and dry at 90°C for 3 minutes to obtain a 10μm adhesive layer; then on the other side of the substrate The weather-resistant layer is formed by coating or compounding, and the pr...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Glass transition temperatureaaaaaaaaaa
Hydroxyl valueaaaaaaaaaa
Hydroxyl valueaaaaaaaaaa
Login to view more

Abstract

The invention provides a solar cell back panel with excellent weather resistance. The solar cell back panel comprises a weather resistant layer, an insulating layer and an adhesive layer, wherein the adhesive layer is a coating which is formed through curing of hydroxy acrylic resin and isocyanate and has high weather resistance; the glass-transition temperature of hydroxy acrylic resin is 12-45 DEG C; and the adhesive layer contains inorganic extinction powder subjected to surface treatment with an alcohol ester method. According to the solar cell back panel, the production and processing performance of the coating is improved, and the back panel has good weather resistance and EVA (ethylene vinyl acetate copolymer) adhesion and can effectively protect cell components in a solar cell module.

Description

technical field [0001] The invention relates to the technical field of solar battery backplanes, in particular to a solar battery backplane with excellent weather resistance. Background technique [0002] In recent years, as a representative of green energy, solar power generation has attracted more and more attention. At present, the application of solar energy is mainly to use solar power generation components to convert solar energy into electrical energy for utilization. Solar power generation components are mainly composed of front plates, packaging materials, crystalline silicon cells, and back plates. The solar backsheet is located on the back of the solar panel and protects and supports the solar cells. Therefore, it must have reliable electrical insulation, good mechanical properties, moisture barrier properties, and weather resistance. [0003] At present, the general-purpose solar backsheet generally has a three-layer structure. The weather-resistant layer is a f...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H01L31/049
CPCY02E10/50
Inventor 王莉李亚钊杨辉梁宏陆刘芳
Owner 乐凯胶片股份有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products