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After CFCs

After CFCs The demise of the CFC113alcohol azeotropic solvent for defluxing circuit assemblies after soldering has led, in recent years, to the electronics assembly industry being offered other cleaning technologies, some new and some new to this industry. In terms of uptake, one of the most successful will be semiaqueous cleaning involving the use of an organic solvent of low volatility to dissolve the contamination followed by an aqueous rinsing process. Two families of solvent have evolved based on natural products terpenes and synthetic hydrocarbon chemicals. This paper reviews the possible semiaqueous processes and the development of the solvents that has taken place. The cleaning performance is considered as well as the potential for effluent control and fully closedloop systems. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Soldering & Surface Mount Technology Emerald Publishing

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Publisher
Emerald Publishing
Copyright
Copyright © Emerald Group Publishing Limited
ISSN
0954-0911
DOI
10.1108/eb037767
Publisher site
See Article on Publisher Site

Abstract

The demise of the CFC113alcohol azeotropic solvent for defluxing circuit assemblies after soldering has led, in recent years, to the electronics assembly industry being offered other cleaning technologies, some new and some new to this industry. In terms of uptake, one of the most successful will be semiaqueous cleaning involving the use of an organic solvent of low volatility to dissolve the contamination followed by an aqueous rinsing process. Two families of solvent have evolved based on natural products terpenes and synthetic hydrocarbon chemicals. This paper reviews the possible semiaqueous processes and the development of the solvents that has taken place. The cleaning performance is considered as well as the potential for effluent control and fully closedloop systems.

Journal

Soldering & Surface Mount TechnologyEmerald Publishing

Published: Mar 1, 1991

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