On-line cure monitoring of polyurethane foams by dielectrometric viscosity measurements

Issue title: Proceedings of the twelfth International Symposium on Interdisciplinary Electromagnetic, Mechanic and Biomedical Problems, ISEM Bad Gastein

Article type: Research Article

Authors: Vandenbossche, Lode^{a; *} | Dupré, Luc^a | Melkebeek, Jan^a

Affiliations: [a] Ghent University, Department Electrical Energy, Systems and Automation, Sint-Pietersnieuwstraat 41, B-9000 Gent, Belgium

Correspondence: [*] Corresponding author. Tel.: +32 9 264 3421; Fax: +32 9 264 3582; E-mail: [email protected]

Abstract: Low-frequency dielectric measurements are applied as an experimental method to monitor the evolution of the overall curing process of one-component polyurethane foams. The electrical resistivity, correlated to the ion viscosity of the curing foam, is measured continuously throughout the curing process. An automated experimental set-up was developed and quantitative specifications about the curing speed, the degree of cure and the end of the curing process are introduced. The influence of foam controlling additives and application methods on the curing process is investigated.

Keywords: Dielectric analysis, curing process, ion viscosity, polyurethane foam

DOI: 10.3233/JAE-2007-755

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 25, no. 1-4, pp. 589-593, 2007