Abstract
Dynamic thermomechanical analysis (DTMA) of unfilled as well as particle-filled poly(dimethylsiloxane) and poly(norbornene) was performed to compare their behavior as dampers. PDMS and PNB were filled with varying contents of spherical iron particles (aspect ratio of 1) and also different hardness formulations of the materials were characterized. The wicket-plot (tanδ vs. storage modulus) was considered therefore and all frequency- and temperature-dependent results were presented. Linear dependencies were observed for PDMS, even though the material did not reveal thermorheologically simple behavior. However, tanδ of PNB was a unique function of its storage modulus and so the material exhibited thermorheologically simple behavior. A linear shift factor over frequency–temperature and frequency–internal pressure (Fe-content) was found for PDMS. Master curves of PNB were constructed and reasonable results were achieved, which were due to their thermorheologically simple material behavior.
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