2011 Volume 60 Issue 3 Pages 147-153
Many telecommunication facilities are protected against long-term weather exposure by some type of weathering prevention technology. The steel poles used by radio stations are coated with polymer material to ensure both a long lifetime and reliability. Our goal is to develop a new technique for measuring the adhesive performance of a polymer film coating on galvanized steel by using a rheological approach. Conventional adhesion testing has proved difficult to reproduce, thus limiting its usefulness. In this study, we investigated the dynamic behavior of the polymer film, tried to evaluate the adhesive performance, and estimate the trend of the mechanical properties. Additionally, we have tried to correlate data obtained in a conventional way with data obtained with the rheological technique to predict the mechanical properties over the lifetime of the material. The result clearly shows the large time dependence of the mechanical properties. Continued film degradation during artificial accelerated cycle testing reveals the corresponding trend for dynamic storage and the loss modulus. We also found that it is possible to predict the potential breaking locations and the degree of strength of polymer films by comparing the results of conventional adhesive performance testing and our new rheological findings.