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Superharmonic Resonance in Carbon-Black-Filled Rubber by High-Frequency DMA
Imran Hussain Syed1, Jorge Lacayo-Pineda2
1Continental Reifen Deutschland GmbH, Jaedekamp 30, 30419 Hannover, Germany. imran.syed@conti.de.
Abstract:
A systematic study of several SBR compounds filled with carbon black of various grades were analysed with the high-frequency Dynamic Mechanical Analyzer (HF DMA) in order to quantify the degree of nonlinearity induced by fillers in rubber compounds. These filler grades indirectly reflect different degrees of microdispersion, which seems to be the main influence on the superharmonic resonance phenomenon observed in HF DMA. This statement arises from the comparison of the microdispersion observed in TEM images. In the second part of the paper, a model compound filled with carbon black is enhanced with a standard reinforcing resin, which leads to a more compact filler network. This induces a higher superharmonic resonance response as well as a higher transmissibility behaviour.
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