Hydroxyl-terminated polyurethane (HTPU) in different proportions has been incorporated into DGEBA-based epoxy resin, and cured with triethylene tetramine. Composites are developed using varying weight fractions of silane coupling agent-treated granite powder as reinforcement in pure and toughened epoxy resin. Various mechanical properties, such as compression and impact behavior, have been determined. Also, fractographic studies of the composites have been carried out. Studies revealed that toughened resin composites enhance the properties, compared to neat matrix.
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Fellahi, S., Chikhi, N. and Bakar, M. (2001). Modification of Epoxy Resin with Kaolin as a Toughening Agent, J. Appl. Polym. Sci., 82: 861-878.
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Ramakrishna, H.V., Padmapriya, S., Varadarajulu , A. and Rai , S.K. (2005). Studies on Tensile and Flexural Properties of Epoxy Toughened with PMMA/Granite Powder and Epoxy Toughened with PMMA/ Fly Ash Composites, J. Reinf. Plast. Compos., 24: 1269-1277.
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Ramakrishna, H.V. and Rai, S.K. (2005). A Study on the Mechanical and Water Absorption Properties of Granite Powder/Epoxy Toughened with PMMA and Fly Ash/Epoxy Toughened with PMMA Composites, J. Reinf. Plast. Compos., 24(11): 1809-1816.
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Ramakrishna, H.V., Padmapriya, S. and Rai , S.K. (2006). Utilization of Fly Ash for Polybutyleneterepthalate-Toughened Epoxy Resin, Polym. Engg. and Sci., 46(7): 946-953.
9.
Ramakrishna, H.V., Padmapriya, S. and Rai , S.K. (2007). Flexural Compression Chemical Resistance and Morphology Studies on Granite Powder-Filled Epoxy and Acrylonitrile Butadiene Styrene Toughened Epoxy Matrices , J. Appl. Polym. Sci., 104(1): 171-177.
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