Abstract
A systematic study was carried out to investigate the effects of nanoclay particles on flexural and thermal properties of woven carbon fiber reinforced polymer matrix composites. Different weight percentages of Nanomer ® I-28E nanoclay, a surface modified montmorillonite mineral, were dispersed in SC-15 epoxy using sonication route. The nanophased epoxy was then used to manufacture 6000 fiber tow-plain weave carbon/epoxy nanocomposites using vacuum assisted resin infusion molding (VARIM) process. Effect of post curing on these samples was also investigated. Three-point bend flexure and dynamic mechanical analysis (DMA) studies were carried out on eight and three layered samples, respectively. Maximum improvements in flexural strength and modulus were found for 2 wt.% nanoclay reinforced composites. Failure surface analysis of flexure samples was carried out by scanning electron microscopy (SEM) analysis. Dynamic mechanical analysis showed enhancement in thermomechanical properties. Glass transition temperature, T g of room temperature cured and thermally post cured samples showed an improvement of about 9 and 13 °C, respectively for 2 wt.% nanoclay loading.
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