Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Thermal Degradation and Flammability Properties of Nanocomposites

Published

Author(s)

Takashi Kashiwagi, A B. Morgan, Joseph M. Antonucci, Richard H. Harris Jr., E A. Grulke, J N. Hilding, Jack F. Douglas

Abstract

Thermal degradation and flammability properties of the two types of nanocomposites with nanosilica and carbon nanotubes were studied. PMMA, poly(metheyl methacrylate), nanocomposites were made by in situ radical polymerization of MMA, methylmethacrylate, with colloidal silica (ca. 12 nm) to study the effects of nanoscale silica particles on the physical properties and flammability properties of PMMA. Transparent samples resulted and the dispersity of the particles was examined by TEM and AFM. The addition of nanosilica particles (13 % by mass) did not significantly change the thermal stability, but it made a small improvement in modulus, and it reduced the peak heat release rate roughly 50 %. Nanocomposites based on polypropylene and multi-wall carbon nanotubes (up to 2 vol.-%) were melt blended, yielding a good dispersion of nanotubes without using any organic treatment or additional additives. Carbon nanotubes are found to significantly enhance the thermal stability of polypropylene in nitrogen at high temperatures. Specifically, the nanotube additive greatly reduced heat release rate of polypropylene. They are found to be at least as effective a flame-retardant as clay/polypropylene nanocomposites. The results show a great potential for the use of carbon nanotubes as a flame retardant additive for polymer materials, especially for the important case of polyolefins when environmentally friendly flame retardants are needed.
Citation
Nanocomposites

Keywords

carbon nanotubes, flame retardant, nanocomposites, silica

Citation

Kashiwagi, T. , Morgan, A. , Antonucci, J. , Harris Jr., R. , Grulke, E. , Hilding, J. and Douglas, J. (2017), Thermal Degradation and Flammability Properties of Nanocomposites, Nanocomposites (Accessed December 10, 2024)

Issues

If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.

Created February 19, 2017