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Polymer Layered-Silicate Nanocomposites: Polyamide-6, Polypropylene and Polystyrene.

pdf icon Polymer Layered-Silicate Nanocomposites: Polyamide-6, Polypropylene and Polystyrene. (1356 K)
Gilman, J. W.; Morgan, A. B.; Harris, R. H., Jr.; Manias, E.; Giannelis, E. P.; Wuthenow, M.

New Advances in Flame Retardant Technology. Proceedings. Fire Retardant Chemicals Association. October 24-27, 1999, Tucson, AZ, Fire Retardant Chemicals Assoc., Lancaster, PA, 9-22 pp, 1999.


Federal Aviation Administration, Washington, DC


fire retardants; flame retardants; nanocomposites; polyamides; polypropylene; polystyrene; flammability; cone calorimeters; heat release rate; physical properties


In many of the cases studied, polymer-clay nanocomposites are materials that have improved thermal properties. Furthermore, most of the nanocomposite systems reported so far show reduced flammability. The delaminated versions of nanocomposites also offer measurable improvements in a variety of physical properties. The intercalated versions offer the reduced flammability benefits, but with less improvement in physical properties. Many issues are unresolved as to the mechanism of these property enhancements. We report here on our continuing study of the mechanism of flammability reduction with recent results for polypropylene-graft-maleic anhydride and polystyrene layered-silicate nanocomposites using montmorillonite and fluorohectorite.