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Polyphosphazene composition, solar cell back film with polyphosphazene coatings and preparation method of solar cell back film

A solar cell and polyphosphazene technology, which is applied in coatings, circuits, photovoltaic power generation, etc., can solve problems such as poor weather resistance and complicated preparation process, and achieve easy operation, simple process, excellent flexibility and ductility Effect

Active Publication Date: 2012-08-01
合肥长阳新材料科技有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0009] In order to further improve the weather resistance of the solar cell back film and prolong its service life, and solve the defects of complicated preparation process and poor weather resistance of the solar cell back film in the prior art, the invention provides a polyphosphazene composition, poly Phosphazene coated solar cell back film and preparation method thereof

Method used

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  • Polyphosphazene composition, solar cell back film with polyphosphazene coatings and preparation method of solar cell back film
  • Polyphosphazene composition, solar cell back film with polyphosphazene coatings and preparation method of solar cell back film
  • Polyphosphazene composition, solar cell back film with polyphosphazene coatings and preparation method of solar cell back film

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preparation example Construction

[0032] The present invention provides a kind of preparation method of above-mentioned polyphosphazene coating solar cell back film, comprises the following steps:

[0033] (1) According to 100 parts by weight of the polyphosphazene composition, add 10-30 parts by weight of solvent, 1-15 parts by weight of polyphosphazene micro-nano material and 55-89 parts by weight of polyphosphazene material in the container , after uniform stirring at room temperature, the above-mentioned polyphosphazene composition was obtained.

[0034] (2) Prepare a polyester base film by a biaxial stretching process, apply the polyphosphazene composition obtained in the above step (1) on the base film, bake and dry to obtain the polyphosphazene coating Solar cell back film.

[0035] Prepare polyphosphazene-coated solar cell back film according to the above method, and the gained back film carries out elongation at break, water vapor transmission rate, weather resistance and PCT test.

[0036]Elongatio...

Embodiment 1

[0041] Add 10 parts by weight of tetrahydrofuran into the container, then add 1 part by weight of polyphosphazene microspheres and 89 parts by weight of polyphenoxyphosphazene, and stir evenly at room temperature to obtain polyphosphazene composition 1.

[0042] The above-mentioned composition 1 is coated on a 100-micron PET base film (also known as a substrate), and the specific coating process is as follows: the substrate is unwound by an unwinder, and then automatically loaded, and the polyphosphazene composition is coated on The two surfaces of the base material are then baked in a three-stage oven. The temperature of the oven is set at 90°C, 80°C, and 70°C respectively. The length of the drying tunnel is 10-30m, and the line speed is 5-40m / min. Finally, it is wound up by a winder, baked and dried to obtain a polyphosphazene-coated solar cell back film A1 with a weather-resistant barrier layer thickness of 20 microns;

Embodiment 2

[0044] Add 10 parts by weight of acetone into the container, then add 5 parts by weight of polyphosphazene microspheres and 85 parts by weight of polyphenoxyphosphazene, and stir evenly at room temperature to obtain polyphosphazene composition 2.

[0045] The above-mentioned composition 2 is coated on a 150-micron PBT substrate, and the specific coating process is as follows: the substrate is unwound by an unwinder, and then automatically loaded, and the polyphosphazene composition is coated on both surfaces of the substrate , and then baked in a three-stage oven. The temperature of the oven is set at 90°C, 80°C, and 70°C respectively. The length of the drying tunnel is 10-30m, and the line speed is 5-40m / min. Finally, it is wound up by a winder. roll, baked and dried to obtain a polyphosphazene-coated solar cell back film A2 with a weather-resistant barrier layer thickness of 15 microns.

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Abstract

The invention relates to the technical field of solar photovoltaic cells, in particular to a polyphosphazene composition, a solar cell back film with polyphosphazene coatings and a preparation method of the solar cell back film in order to solve the problems that: in the prior art, the solar cell back film is complicated in preparation process and poor in weathering resistance. The polyphosphazene composition comprises 55-89 parts by weight of polyphosphazene material, 1-15 parts by weight of polyphosphazene micro-nano material, and 10-30 parts by weight of solvent. The solar cell back film has a three-layer structure, wherein the middle layer is a base film made from a polyester material, and the two outer layers are respectively polyphosphazene coatings made from a polyphosphazene material and a polyphosphazene micro-nano material. The solar cell back film has a simple structure and excellent weathering resistance, and the polyphosphazene coatings and the base film material have better compatibility. The preparation method is simple in production process and is easy to operate.

Description

technical field [0001] The invention relates to the technical field of solar photovoltaic cells, in particular to a polyphosphazene composition, a polyphosphazene-coated solar cell back film and a preparation method thereof. Background technique [0002] As a green and inexhaustible energy source, solar energy is the best choice to replace traditional thermal power generation. Since solar cells need to be exposed to outdoors for a long time, the cells in photovoltaic modules must be protected to prevent the influence and damage of environmental factors such as water vapor, oxygen, and ultraviolet rays in the atmosphere. Therefore, a back film must be added to the lower end of the cell to protect the cell, so the back sheet needs to have good insulation and weather resistance. These properties are mainly achieved through the substrate in the back film, but because the substrate is in the During use, especially in outdoor use, it is easy to be eroded by the external environme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L85/02C09D185/02H01L31/048H01L31/18
CPCY02E10/50Y02P70/50
Inventor 不公告发明人
Owner 合肥长阳新材料科技有限公司
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