Effect of Heavy Filler on Dynamic Mechanical Properties of Polymer Composites

Abstract:

Experimental studies on the effect of frequency and temperature on the dynamic mechanical properties of filled composites are studied poorly and require further research. The purpose of theresearch is to study the effect of heavy fillerbarite (BaSO₄), on the dynamic characteristics of a highly filled composite based on butyl rubber, and to compare the efficiency of barite in the composite with similar light filler. The conclusions are made on the basis of a comparative analysis of the temperature-frequency dependences of the loss tangent and the storage modulusat various percentages of filler, obtained by the DMA method. It has been established that while increasing barite concentration the elasticity of the composite material decreases, the glass transition temperature shifts upwards, and the reverse occurs in the zone of highly elastic state of the composite: the higher the barite concentration, the higher the damping properties. The authors provided a rationale that the heavy filler shows the effect only in the highly elastic zone if compared with the light one. The article is of practical value for the development of new vibration insulation materials.

• Periodical: Key Engineering Materials (Volume 816)
• Pages: 162-166
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.816.162
• Online since: August 2019
• Authors: Olga I. Tarasova*, Yuriy V. Yurkin, V.V. Avdonin
• Keywords: Barite, Butyl Rubber, Industrial Oil, Loss Tangent, Storage Modulus

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