- Author
-
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.
- Title
- Flammability Properties of Polymer-Layered-Silicate Nanocomposites, Polypropylene and Polystyrene Nanocomposites.
- Coporate
- National Institute of Standards and Technology, Gaithersburg, MD
Pennsylvania State Univ., University Park
Cornell Univ., Ithaca, NY
Air Force Research Laboratory, Edwards AFB, CA
- Journal
-
Chemistry of Materials,
Vol. 12,
No. 7,
1866-1873,
July 17, 2000
- Sponsor
- Federal Aviation Administration, Washington, DC
- Contract
- DTFA0003-92-Z-0018
- Keywords
-
nanocomposites
|
polypropylene
|
polystyrene
|
flammability
|
thermal stability
|
flammability measurements
|
cone calorimeters
- Identifiers
- Transmission Electron Microscopy
- 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.