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Solar battery back plate adopting ultraviolet (UV) curing weather-proof coating and manufacture method of solar battery back plate

A technology for solar cells and manufacturing methods, applied in coatings, circuits, photovoltaic power generation, etc., can solve the problems of low curing efficiency of coatings and coatings, high production equipment investment, large production sites, etc., and achieve high coating curing efficiency, improve Excellent production efficiency and weather resistance

Active Publication Date: 2012-07-25
ZHEJIANG WAZAM NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the presence of easily hydrolyzable adhesives on both sides of the PET substrate inside the compound-adhesive backsheet, the fluorine film (PVF or PVDF, etc.) is easily peeled off from the PET substrate, resulting in product defects
However, the current coating-type backplane has the problem of low curing efficiency of the coating (it takes more than 5 minutes), requires a large production site, high investment in production equipment, and there are also environmental pollution caused by the volatilization of organic solvents, etc. question

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048]Materials and specific gravity of UV curable weather-resistant coating: 70wt% fluorocarbon resin, 10wt% trimethylolpropane triacrylate, 4wt% initiator Irgacure 184, 10wt% titanium dioxide (particle size 0.5μm), 1wt% dispersant DISPERBYK -111, 2wt% antioxidant 1010, 1.5wt% antihydrolysis agent Stabaxol-1, 1.5wt% hindered amine antiaging agent.

[0049] First, add 50% fluorocarbon resin and all titanium dioxide into a vertical sand mill, use glass beads with a particle size of 1.5 mm as the sanding medium, and sand for 3 hours at a peripheral speed of 10 m / sec to obtain mother liquor. Then, the mother liquor and the remaining raw materials are uniformly mixed on a high-speed mixer to obtain the coating. The paint was coated on both sides of the plasma-treated PET substrate through the machine head, and cured by an ultraviolet light curing machine with a wavelength of 365nm. The curing time was 10s to obtain a solar cell backsheet material with a thickness of 250 μm.

[0...

Embodiment 2

[0052] The materials and specific gravity of UV curing weather-resistant coating: 60wt% epoxy resin, 15wt% 1,6-hexanediol diacrylate, 5wt% Jiangsu Huati 201 initiator, 15wt% silicon dioxide (particle size 1 μm), 1.5wt% dispersant DISPERBYK-112, 1.5wt% antioxidant 1076, 1wt% antihydrolysis agent Stabaxol-P100, 1wt% phenylpropazole antiaging agent.

[0053] First, add 40% fluorocarbon resin and silicon dioxide into a vertical sand mill, use glass beads with a particle size of 2mm as the sanding medium, and sand for 4 hours at a peripheral speed of 12m / sec to obtain mother liquor. Then, the mother liquor and the remaining raw materials are uniformly mixed on a high-speed mixer to obtain the coating. The paint was coated on both sides of the plasma-treated PBT substrate through the machine head, and cured by an ultraviolet light curing machine with a wavelength of 365nm. The curing time was 50s to obtain a solar cell backsheet material with a thickness of 300 μm.

[0054] After ...

Embodiment 3

[0056] Materials and specific gravity of UV curable weather-resistant coating: 80wt% acrylic resin, 10wt% glycidyl methacrylate, 3wt% initiator Irgacure 1173, 5wt% alumina (particle size 2μm), 0.5wt% dispersant DISPERBYK-112 , 0.5wt% antioxidant 168, 0.5wt% antihydrolysis agent Stabaxol-P100, 0.5wt% benzophenone antiaging agent.

[0057] First, add 60% acrylic resin and aluminum oxide into a vertical sand mill, use glass beads with a particle size of 3 mm as the sanding medium, and sand for 5 hours at a peripheral speed of 8 m / sec to obtain a mother liquor. Then, the mother liquor and the remaining raw materials are uniformly mixed on a high-speed mixer to obtain the coating. The paint was coated on one side of the corona-treated PNT substrate through the machine head, and cured by an ultraviolet light curing machine with a wavelength of 365nm. The curing time was 30s to obtain a solar battery backsheet material with a thickness of 200 μm.

[0058] After testing: the performa...

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Abstract

The invention discloses a solar battery back plate adopting an ultraviolet (UV) curing weather-proof coating and a manufacture method of the solar battery back plate. The solar battery back plate comprises a substrate, wherein at least one side of the substrate is coated with the UV curing weather-proof coating, the UV curing weather-proof coating is prepared from the following materials: 50 to 80 weight percent of weather-proof photosensitive resin, 10 to 20 weight percent of reactive diluent, 2 to 15 weight percent of initiating agent, 5 to 30 weight percent of filling material, 0.5 to 2 weight percent of dispersing agent, 0.5 to 2 weight percent of antioxidant, 0.5 to 2 weight percent of hydrolysis-resistant agent and 0.5 to 2 weight percent of anti-aging agent. The UV curing weather-proof coating is adopted and directly coated onto the substrate, the coating curing efficiency is high, the production efficiency of the solar battery back plate is improved, and meanwhile, the use of organic solvents causing serious pollution to the environment is avoided, so the organic solvent volatilization is avoided in the whole production process, and the solar battery back plate conforms to the green and environmental friendly standard.

Description

technical field [0001] The invention belongs to the technical field of solar battery backplane manufacturing, and in particular relates to a solar battery backplane coated with a UV-cured weather-resistant coating on at least one side and a manufacturing method thereof. Background technique [0002] The back sheet is one of the important components of the solar cell, which mainly plays the role of insulation, anti-water vapor penetration, protection of the cell and support. At present, the mainstream solar cell module backsheet materials mostly use double-sided fluorine-containing compound adhesive backsheets and coated backsheets. Due to the presence of easily hydrolyzed adhesives on both sides of the internal PET substrate of the compound-adhesive backsheet, the fluorine film (PVF or PVDF, etc.) is easily peeled off from the PET substrate, resulting in product defects. However, the current coating-type backplane has the problem of low curing efficiency of the coating (it ...

Claims

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Application Information

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IPC IPC(8): H01L31/048H01L31/18C09D4/00C09D4/02C09D4/06C09D7/12H01L31/049
CPCY02E10/50
Inventor 沈宗华董辉龚春林
Owner ZHEJIANG WAZAM NEW MATERIAL CO LTD
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