Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Acidity and corrosivity measurements of fire effluent
The intent of this paper is to compare data from a conventional pH and conductivity test, similar to the IEC procedure, with data obtained from the CNET designed equipment, which uses the resistance of model printed circuit boards to evaluate the corrosivity of fire effluents. We used an acid gas evolution test in which the combustion parameters, i.e., time and temperature were varied. In the CNET chamber the relative humidity was varied. The change of resistance has also eben measured after the printed circuit board was removed from there gases in order to assess longer time corrosive impact. The surfaces of corroded printed circuit boards are illustrated with SEM pictures. It is demonstrated that a direct measure, such as the CET, is an appropriate method to present corrosivity data and its impact on electronic equipment exposed to fire effluents, for a broad range of materials.
Acidity and corrosivity measurements of fire effluent
The intent of this paper is to compare data from a conventional pH and conductivity test, similar to the IEC procedure, with data obtained from the CNET designed equipment, which uses the resistance of model printed circuit boards to evaluate the corrosivity of fire effluents. We used an acid gas evolution test in which the combustion parameters, i.e., time and temperature were varied. In the CNET chamber the relative humidity was varied. The change of resistance has also eben measured after the printed circuit board was removed from there gases in order to assess longer time corrosive impact. The surfaces of corroded printed circuit boards are illustrated with SEM pictures. It is demonstrated that a direct measure, such as the CET, is an appropriate method to present corrosivity data and its impact on electronic equipment exposed to fire effluents, for a broad range of materials.
Acidity and corrosivity measurements of fire effluent
Säure und Korrosionsmessungen von Feuerströmen
Bottin, M.F. (Autor:in)
1990
8 Seiten, 7 Bilder, 4 Tabellen, 3 Quellen
Aufsatz (Konferenz)
Englisch
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