1 May 1994 Epoxidized natural rubbers and their blends: dynamic storage modulus and damping behavior
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The dynamic properties of blends based on epoxidized natural rubber have been measured using a dynamic mechanical thermal analyzer (DMTA). The formulations studied were chosen according to a statistical design, and response equations for various properties derived on the basis of the results. The equations are used to select further formulations with specified damping properties. Comparison of the properties observed for the selected formulations and those expected show generally good agreement. For some formulations, master curves of dynamic properties as measured by forced non-resonance on a servohydraulic testing-machine and by a longitudinal vibration method are presented. The latter has the advantage of being able to gather results towards the glassy region of the transition zone, without the problem of machine or jig compliance. The type of blends investigated offer materials covering a range of damping properties from a broad peak covering a relatively wide frequency range to a narrow damping peak whose position on the frequency axis can be adjusted by simple changes in the formulation.
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Hamid R. Ahmadi, Hamid R. Ahmadi, K. N. G. Fuller, K. N. G. Fuller, N. Legorburu, N. Legorburu, C. Metherell, C. Metherell, } "Epoxidized natural rubbers and their blends: dynamic storage modulus and damping behavior", Proc. SPIE 2193, Smart Structures and Materials 1994: Passive Damping, (1 May 1994); doi: 10.1117/12.174102; https://doi.org/10.1117/12.174102

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