Study on Physical and Dynamic Properties of BR Based Composites Filled with Different Particle Size of Magnesia

Abstract:

BR/MgO composites were prepared with seven kinds of particle sizes of MgO filled respectively. Effects of particle sizes on dynamic mechanical properties, vulcanization characteristics and physical properties of BR/MgO composites were studied. The results showed that the tensile strength of composites filled nanoscale of MgO was nine times of pure BR, and the vulcanization time was significantly shorter than that of composites filled with micron grade filler. The RPA experiments proved that the composites filled with MgO of 20nm and 50nm have greatly higher G＇, and that the G＇of the composites increase markedly while the value of tanδ decrease sharply with given temperature above 90 °C increasing. the higher value of tanδ at the frequency mode, and the obvious Payne effect compared with the composites filled micron grade of MgO

• Periodical: Applied Mechanics and Materials (Volumes 217-219)
• Pages: 165-173
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.217-219.165
• Online since: November 2012
• Authors: Nai Xiu Ding, Fu Lan Hao, Lei Li, Wen Sun, Liang Liu
• Keywords: Butadiene Rubber, Dynamic Propertry, Magnesia, Particle Size

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