Abstract
The behaviour of epoxy based nanocomposites containing 1.5, 2 and 2.5 wt.% of carbon nanofibers (CNFs) have been analysed through mechanical and viscoelastic characterizations. The nanocomposites thus fabricated were allowed to cure at two different temperature conditions- one was at room temperature (27 °C) and other was at low temperature (4 °C). Among all the room temperature cured (RTC) and low temperature cured (LTC) composites, maximum improvement in flexural modulus (83% & 128%), storage modulus (34% & 21%) and glass transition temperature (34% & 35%) were found in case of 2 wt.% CNF loaded samples (CNF2). In addition, LTC composites at 2 wt.% were showing enhanced flexural and thermal properties in comparison to the RTC composites. However at relatively higher concentration less increment in flexural modulus was noticed for both RTC and LTC composites. Microscopical investigation supported the above results by showing the interfacial arrangement between carbon nanofibers and epoxy matrix.
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