This study addresses the adhesive dispensing characteristics of three one-part epoxy-based adhesives by investigating the experimental viscosity data as measured by a parallel plate rheometer. The viscosity data was evaluated as a function of storage time, storage temperature, test (adhesive line) temperature and shear rate, which are related to the adhesive flow rate and pumping pressure. A power law equation was found to best fit the viscosity data for the shear rates considered. The Cox–Merz rule was found to fit the viscosity data reasonably well. This paper also shows the application of time–temperature superposition to predict viscosity at dispensing.
International Journal of Adhesion and Adhesives – Elsevier
Published: Dec 1, 2015
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