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Washing liquid for solar cell silk screen printing process

A technology of solar cells and screen printing, applied in the field of cleaning agents, can solve the problems of skin damage, human injury, and smell.

Inactive Publication Date: 2009-09-16
HANWHA SOLARONE QIDONG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most screen cleaning solutions supplied to solar cell companies contain most commonly used ketones, such as methyl ethyl ketone and isophorone, etc. The polarity and strong solubility of these solvents can penetrate 6 layers of PE latex gloves, making them stick and penetrate Wearing gloves can damage the skin, and the smell is strong, which is harmful to the human body

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A cleaning solution for solar cell screen printing process, which is composed of the following components in volume percentage:

[0018] Diisopropyl ether 2%

[0019] Ethyl acetate or n-butyl acetate 5%

[0020] Ethanol 20%~50%

[0021] Butanol 10%~30%

[0022] Ethylene glycol propyl ether (or diethylene glycol ether or propylene glycol ether) 30% to 50%

[0023] Additive 3%

[0024] The additive is a mixture of EDTA and EO-PO-EO tri-block copolymer, and the volume ratio of EDTA to EO-PO-EO tri-block copolymer is 1:2.

Embodiment 2

[0026] A cleaning solution for solar cell screen printing process, consisting of the following components in volume percentage:

[0027] C 3 ~C 12 Ether 1~30% (Example 1%, 15%, 30%)

[0028] C 3 ~C 9 Esters 1~30% (Example 1%, 15%, 30%)

[0029] C 2 ~C 5 Alcohol 10-60% (eg 10%, 35%, 60%)

[0030] C 5 ~C 18 Alcohol ether compound 10~55% (Example 10%, 30%, 55%)

[0031] Additive 0~5%. (eg 0%, 3%, 5%)

[0032] The sum of the amounts of the above-mentioned components is 100%. Ether is linear or branched ether, ester is fatty acid ester or aromatic derivative, alcohol is monohydric alcohol, and alcohol ether compound is oligomer of small molecule polyol. The additive is a mixture containing complexing agent and surfactant.

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PUM

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Abstract

The invention discloses a washing liquid for a solar cell silk screen printing process, which consists of C3-C12 ether, C3-C9 ester, C2-C5 alcohol, C5-C18 alcohol ether compound and an additive. The invention provides a solvent type washing liquid, which is suitable for the solar cell industry, is particular suitable for washing metal slurry, resin, oil stains and printing equipment, has high washing efficiency and small pollution, toxicity and damage to human bodies, and is dry quickly without residual marks after washing.

Description

Technical field: [0001] The invention relates to a cleaning agent for the solar cell industry, which is particularly suitable for cleaning metal paste, resin, oil stains and solvent-based cleaning liquid for printing equipment. Background technique: [0002] At present, the solar cell industry is developing rapidly. Although the financial crisis that started at the end of 2008 has had a significant impact on the solar cell industry, the development momentum of the solar cell industry and its ancillary industries remains unabated both domestically and internationally. At the same time, human health and environmental protection have increasingly become the focus of society and the country. At present, all countries are developing solar photovoltaic and photothermal industries to reduce pollution emissions and improve the ecological environment and atmospheric environment. The current development of the solar energy industry has strictly limited the sewage and waste gas discha...

Claims

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Application Information

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IPC IPC(8): C11D7/26H01L31/18
CPCY02P70/50
Inventor 杨雷马跃高周妙
Owner HANWHA SOLARONE QIDONG
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