Flammability Properties of Polymer-Layered-Silicate Nanocomposites, Polypropylene and Polystyrene Nanocomposites.
Flammability Properties of Polymer-Layered-Silicate
Nanocomposites, Polypropylene and Polystyrene
Nanocomposites.
(1688 K)
Gilman, J. W.; Jackson, C. L.; Morgan, A. B.; Harris, R.
H., Jr.; Manias, E.; Giannelis, E. P.; Wuthenow, M.;
Hilton, D.; Phillips, S. H.
Chemistry of Materials, Vol. 12, No. 7, 1866-1873, July
17, 2000.
Sponsor:
Federal Aviation Administration, Washington, DC
Keywords:
nanocomposites; polypropylene; polystyrene;
flammability; thermal stability; flammability
measurements; cone calorimeters
Abstract:
Our continuing study of the mechanism of flammability
reduction of polymer-layered-silicate nanocomposites has
yielded results for polypropylene-graft-maleic anhydride
and polystyrene-layered-silicate nanocomposites using
montmorillonite and fluorohectorite. Cone calorimetry
was used to measure the heat release rate and other
flammability properties of the nanocomposites, under
well-controlled combustion conditions. Bath the
polymer-layered-silicate nanocompasites and the
combustion residues were studied by transmission
electron microscopy and X-ray diffraction. We have found
evidence for a common mechanism of flammability
reduction. We also found that the type of layered
silicate, nanodispersion, and processing degradation
have an influence on the flammability reduction.
Building and Fire Research Laboratory
National Institute of Standards and Technology
Gaithersburg, MD 20899