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High-gloss non-tinning coating of black bus bar and preparation method of black bus bar

A bus bar, black technology, which is applied in the field of high-gloss non-stick tin coating and the preparation of black bus bars, can solve the problems of unfavorable mass production, poor product performance, uneven coating thickness, etc. Excellent temperature performance effect, the effect of increasing the temperature of the welding head

Active Publication Date: 2022-04-08
SUZHOU TONYSHARE ELECTRONICS MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is also a method of spraying ink to prepare black bus bars. The performance of products prepared in this way is poor, such as uneven color, uneven coating thickness, etc.
In addition, the black confluence belt needs to be welded with the interconnection strip at high temperature. After printing with ordinary ink, it will become brittle at high temperature and will not be resistant to bending, or welding deinking, discoloration, blistering and other adverse phenomena will seriously affect the production of component customers.
Some patents propose to achieve black visual effects by laser etching, but this process is expensive and not conducive to mass production

Method used

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  • High-gloss non-tinning coating of black bus bar and preparation method of black bus bar

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preparation example Construction

[0022] The embodiment of the present application discloses a preparation method of a high-gloss non-stick tin coating for a black bus bar, which includes the following components in parts by weight:

[0023] 25-30 parts of water-based polyhydroxy acrylic emulsion, 3-10 parts of fluorine-modified acrylic emulsion, 5-6 parts of carbon black, 5-10 parts of nano-sized titanium dioxide, 15-25 parts of isobutanol, diethylene glycol monobutyl ether 10-15 parts, 5-8 parts of water, 4-8 parts of water-based amino resin, 0.5-1 part of water-based leveling agent.

[0024] Put the above materials into the mixer and stir for 25-35min, the specific stirring time can be 25min, 30min, 35min, etc.

[0025] After stirring and mixing evenly, put it into a grinder for grinding. The grinding time is 1-3 hours to obtain a water-based low surface energy high-gloss ink slurry. The specific grinding time can be 1 hour, 2 hours, 3 hours, etc.

[0026] Specifically, the particle size range of nanoscale...

Embodiment 1

[0042] (1) Weigh 26 parts of water-based acrylic resin emulsion, 5 parts of fluorine-modified acrylic emulsion, 6 parts of carbon black, 5 parts of nano-scale titanium dioxide, 18 parts of isobutanol, 12 parts of diethylene glycol monobutyl ether, and 6 parts of water , Cytec 385 water-based amino resin 6 parts, BYK-333 leveling agent 0.5 parts. Add the above materials into the mixer and stir for 30min. After mixing evenly, grind with a grinder for 1 hour to obtain a water-based low surface energy high-gloss ink slurry.

[0043] (2) After the rolled copper strips have been degreased on the surface, they are arranged at equal intervals on the high-temperature-resistant silicone strips by a coating device. The number of copper strips is determined according to the width of the tape and the size of the copper strips. The distance between adjacent parallel copper strips is about 5mm. The coated copper strip is printed with high-gloss non-stick tin ink by the confluence belt coat...

Embodiment 2

[0045](1) Weigh 26 parts of water-based acrylic resin emulsion, 9 parts of fluorine-modified acrylic emulsion, 6 parts of carbon black, 5 parts of nano-scale titanium dioxide, 21 parts of isobutanol, 13 parts of diethylene glycol monobutyl ether, and 6 parts of water , Cytec 385 water-based amino resin 6 parts, BYK-333 leveling agent 0.8 parts. Add the above materials into the mixer and stir for 30min. After mixing evenly, grind with a grinder for 1 hour to obtain a water-based low surface energy high-gloss ink slurry.

[0046] (2) After the rolled copper strips have been degreased on the surface, they are arranged at equal intervals on the high-temperature-resistant silicone strips by a coating device. The number of copper strips is determined according to the width of the tape and the size of the copper strips. The distance between adjacent parallel copper strips is about 5mm. The coated copper strip is printed with high-gloss non-stick tin ink by the printing equipment of...

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Abstract

The invention discloses a black bus bar highlight non-wetting coating and a black bus bar preparation method, and the black bus bar highlight non-wetting coating comprises the following components by weight: 25-30 parts of a water-based polyhydroxy acrylic emulsion, 3-10 parts of a fluorine modified acrylic emulsion, 5-6 parts of carbon black, 5-10 parts of nano titanium dioxide, 15-25 parts of isobutanol, 10-15 parts of diethylene glycol monobutyl ether, and 5-8 parts of water. By using the formula, an unprinted area is uniformly plated with a tin-lead alloy during tin plating, and the tin-lead alloy can only be slightly attached to a printed area due to low surface energy and can be scraped off by an air knife when the printed area is taken out of a tin furnace, so that the cleanness of the surface of a coating is ensured; and meanwhile, the high-gloss non-tinning ink has better temperature resistance than other inks, and the copper base body has higher melting point, so that the phenomenon that the copper base serving as a printing stock is melted due to overhigh welding temperature when the ink is printed on the copper base is avoided, the displacement phenomenon of the ink layer is avoided, and the high-gloss non-tinning ink is more convenient for customers to use.

Description

technical field [0001] The invention relates to the field of photovoltaic materials, in particular to a high-gloss tin-free coating of a black bus bar and a preparation method for the black bus bar. Background technique [0002] Photovoltaic bus bar is the main device that gathers silicon cells to generate current, and it has a certain importance in the photovoltaic industry. Conventional bus bars are generally silver-white tin-lead alloy, which is quite different from the color of silicon cells. To keep the color uniform, black bus bars were developed. In the traditional process, the black bus bar is realized by sticking a film. This method has the problem that the tape will fall off after a long time. Also have to adopt the method for spraying ink to prepare black bus bar, the product performance of this mode preparation is relatively poor, such as uneven color, problems such as uneven coating thickness. In addition, the black confluence belt needs to be welded with the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/107C09D11/03C09D11/103
CPCY02E10/50
Inventor 陆利斌黄后强宋建源
Owner SUZHOU TONYSHARE ELECTRONICS MATERIALS TECH
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