Chimie analytique : une revue indienne
ISSN (PRINT): 0974-7419

Abstrait

New phosphorous hardeners intercalated epoxy/clay nanocomposites enhanced in homogeneity, modulus and heat resistant properties

M.Suguna Lakshmi, B.S.R.Reddy


Different phosphorous hardeners (PHs) 4,4'-diaminodiphenylether (DDE), 4,4'- diaminodiphenylmethane (DDM) and 4,4'- diaminodiphenylsulphone (DDS)were successfully synthesized These PHs could be used as a better choice of curatives because of their inherent thermal resistance and better organic solubility characteristics. Using the PHs, a series of unmodified epoxy (UME) composites and claymodified epoxy(CME) nanocompositeswere prepared.TheUMEcompositeswere stable up to 468ºC. The limiting oxygen index (LOI) of CME was higher than that of UME. Thiswasdue tothe flameretardancyobtainedthrough the synergistic effect of phosphorous and nanoclayin theCMEnanocomposites.


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