Dynamic Mechanical Characterization of Soy Based Epoxy Resin System
Two novel soy based resin systems namely Epoxidized Allyl Soyate (EAS) and Epoxidized Methyl Soyate (EMS) have been synthesized at the University of Missouri-Rolla. These resins form co-polymers with base epoxy in varied proportions to obtain a family of polymeric networks. The effects of the stoichiometry on the dynamic mechanical properties of the resulting resins were investigated. The results show that the damping ability is enhanced through the introduction of EAS and EMS into the base Epon resin. The good damping in the soy resins is attributed to the presence of long flexible polymer chains in the backbone. The glass transition temperature decreased and the intensity of the loss tangent increased with the addition of soy resins. EMS possessed the highest loss tangent peak and the lowest glass transition temperature among the other co-polymers. The increase in frequency of the loading displaced the loss tangent response to higher temperatures for all the concentrations. Therefore, soy resins are capable of damping the sound and vibration over a wide range of temperatures and frequencies.
S. Ahamed et al., "Dynamic Mechanical Characterization of Soy Based Epoxy Resin System," Proceedings of the SAMPE Conference (2004, Long Beach, CA), pp. 3507-3516, Society for the Advancement of Material and Process Engineering (SAMPE), May 2004.
International SAMPE Technical Conference (2004: May 16-20, Long Beach, CA)
Mechanical and Aerospace Engineering
Keywords and Phrases
Dynamic Mechanical Analysis; Soy Resins; Damping
Article - Conference proceedings
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