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The Effect of Thermal Treatment on Tensile Properties of Basalt Fibers

S.M.M. Sabet, F. Akhlaghi, R. Eslami-Farsani

Journal of Ceramic Science and Technology, Vol. 6, No. 3 (2015), pp. 245-248

DOI: 10.4416/JCST2014-00053

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Abstract

The use of basalt fibers as a reinforcement in various composites requires the application of elevated temperatures during synthesis and processing conditions depending on the technique utilized. In this study, the tensile strength of basalt fibers at room temperature and also after exposure to 300, 350, 400, 450 and 500 °C in a furnace for durations of 5, 10, 15 and 20 min was investigated. The results indicate that the residual strength of basalt fibers drastically decreases after 20 min exposure at 300 and 400 °C and is only about 57 % and 35 % of that of fibers at room temperature, respectively. At 450 and 500 °C, this drastic decrease occurs after only 5 min. These results indicate the optimum conditions for processing parameters for basalt fibers and the composites based on them.

Keywords

Basalt fibers, monofilament, bundle, tensile and residual strength.

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