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Displaying 226 - 250 of 269

Flammability of Polymer Clay Nanocomposites Consortium: Year One Annual Report (NISTIR 6531)

July 1, 2000
Author(s)
Jeffrey W. Gilman, Takashi Kashiwagi, A B. Morgan, Richard H. Harris Jr., L D. Brassell, Mark R. VanLandingham, C L. Jackson
We recently found that polymer layered-silicate (clay) nanocomposites have the unique combination of reduced flammability and improved physical properties. However, the details of the fire retardant mechanism were not well understood. In October of 1998 a

New Approaches to the Development of Fire-Safe Materials (NISTIR 6465)

February 1, 2000
Author(s)
A B. Morgan, Jeffrey W. Gilman, Marc R. Nyden, C L. Jackson
Thermoplastic polyetherimide-clay nanocomposites were synthesized from 1,3-phenylenediamine and bisphenol A dianhydride using an in situ approach. Two types of organically treated clays were utilized to synthesize these nanocomposites. The two organically

Flammability of Polystyrene-Clay Nanocomposites

January 1, 2000
Author(s)
A B. Morgan, Jeffrey W. Gilman, Richard H. Harris Jr., C L. Jackson, C A. Wilkie, J Zhu
Research in the area of condensed phase flame retardants for polymers usually builds upon existing technologies, such as metal hydroxides (alumina, magnesium hydroxide) or phosphorus based materials. However, these materials tend to weaken mechanical

Polymer Layered Silicate Nanocomposites: Thermal Stability of Organic Cationic Treatments

January 1, 2000
Author(s)
Jeffrey W. Gilman, A B. Morgan, Richard H. Harris Jr., Paul C. Trulove, H DeLong, T E. Sutto
Nanocomposites result from the combination of materials with different properties at the nanometer scale. Some examples of these include: polymers combined with layered-silicate, polymers combined with nano-silica, hybrid materials prepared by sol-gel

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

October 24, 1999
Author(s)
Jeffrey W. Gilman, A B. Morgan, Richard H. Harris Jr., E Manias, E P. Giannelis, M Wuthenow
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

Cyanate Ester Clay Nanocomposites: Synthesis and Flammability Studies

May 23, 1999
Author(s)
Jeffrey W. Gilman, Richard H. Harris Jr., Douglas Hunter
New goals outlined by the U. S. Federal Aviation Administration (FAA) Advanced Fire-Safe Aircraft Materials Research Program enumerate an order-of-magnitude improvement in aircraft cabin-material fire safety. In the pursuit of improved approaches to the

Char Enhancing Approaches to Flame Retarding Polymers

January 1, 1999
Author(s)
Jeffrey W. Gilman, Takashi Kashiwagi, Richard H. Harris Jr., S M. Lomakin, J D. Lichtenhan, A. Bolf, P. Jones
Additives that increase the amount of charcoal-like residue or carbonaceous char that forms during polymer combustion are very effective fire retardants (FR). Our research efforts focus on reducing polymer flammability by promoting char formation. Our

Flammability Studies of Polymer Layered Silicate (Clay) Nanocomposites (NISTIR 6242)

October 1, 1998
Author(s)
Jeffrey W. Gilman, Takashi Kashiwagi, Marc R. Nyden, James E. Brown, C L. Jackson, S M. Lomakin, E P. Giannelis, E Manias
In the pursuit of improved approaches to fire retarding polymers a wide variety of concerns must be addressed, in addition to the flammability issues. First, the low cost of commodity polymers requires that the fire retardant (FR) approach also be of low
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