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Environment-friendly acid etchant for circuit board

A circuit board and etching solution technology, which is applied in the field of acid and environmentally friendly etching solutions for circuit boards, can solve the problems of substandard wastewater discharge, easily exceeding the standard of ammonia nitrogen, and increasing wastewater treatment costs, so as to reduce wastewater treatment costs, improve production efficiency, and avoid wastewater. The effect of substandard emissions

Active Publication Date: 2018-12-28
惠州大亚湾海科发实业有限公司
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  • Summary
  • Abstract
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  • Claims
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Problems solved by technology

[0003] The traditional acidic etching solution needs to add ammonia nitrogen (such as ammonium chloride) to achieve the etching effect. When treating the etching waste liquid, the ammonia nitrogen is easy to exceed the standard. At present, the country has requirements for the content of ammonia nitrogen in the wastewater discharge. Use Acidic etchant with ammonia nitrogen components will easily make the wastewater discharge not up to standard or increase the cost of wastewater treatment

Method used

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  • Environment-friendly acid etchant for circuit board

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Embodiment Construction

[0016] The following clearly and completely describes the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0017] The invention provides an acidic environment-friendly etching liquid for circuit boards, wherein 20.9-23.1 kg of sodium chlorate, 22.8-25.2 kg of sodium chloride and 2.85-3.15 kg of potassium chloride are dissolved in every 100 liters of water.

[0018] The invention above

[0019] Specifically, the acidic environment-friendly etchant for circuit boards of the present invention may include the following embodiments.

[0020]

[0021]

[0022] Potassium chloride adopted in each embodiment of the present invention replac...

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Abstract

The invention provides an environment-friendly acid etchant for a circuit board. 20.9-23.1 kg by weight of sodium chlorate, 22.8-25.2 kg by weight of sodium chloride and 2.85-3.15 kg by weight of potassium chloride are dissolved in every 100 L of water. Traditional ammonia nitrogen components are replaced with potassium chloride, ammonia nitrogen is avoided from the source, and the etching effectof the acid etchant is better than that of the acid etchant adopting the ammonia nitrogen components.

Description

technical field [0001] The invention relates to an acidic etching solution, in particular to an acidic and environment-friendly etching solution for circuit boards. Background technique [0002] This section is intended to provide a background or context for the embodiments of the invention set forth in the claims and the detailed description, and what is described herein is not admitted to be prior art by inclusion in this section. [0003] The traditional acidic etching solution needs to add ammonia nitrogen (such as ammonium chloride) to achieve the etching effect. When treating the etching waste liquid, the ammonia nitrogen is easy to exceed the standard. At present, the country has requirements for the content of ammonia nitrogen in the wastewater discharge. Use The acidic etchant with ammonia nitrogen composition will easily make the wastewater discharge not meet the standard or increase the cost of wastewater treatment. Contents of the invention [0004] In view of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F1/18
CPCC23F1/18
Inventor 徐浩田
Owner 惠州大亚湾海科发实业有限公司
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