Nanoparticle networks reduce the flammability of polymer nanocomposites

We show that carbon nanotubes can surpass nano-clays as effective FR additives if they form a jammed network structure within the polymer matrix, such that the material as a whole behaves rheologically like a gel

Takashi Kashiwagi; Fangming Du; Jack F. Douglas; Karen I. Winey; Richard H. Harris; John R. Shields

2005

Scholarcy highlights

  • Synthetic polymer materials are rapidly replacing more traditional inorganic materials such as metals and natural polymeric materials such as wood
  • We show that carbon nanotubes can surpass nano-clays as effective FR additives if they form a jammed network structure within the polymer matrix, such that the material as a whole behaves rheologically like a gel
  • Nanocomposites based on nano-clay particles formed a continuous protective solid layer on the burning surface or extended island structures made of clay and carbonaceous char during burning
  • Polymer nanocomposites with low levels of single-walled carbon nanotubes, multi-walled carbon nanotubes, or carbon nanofibers, show significantly increased mechanical properties and electrical conductivity and to clay they have a highly extended structure
  • The viscoelastic properties of the PMMA nanocomposites containing SWNT, MWNT, CNF, or Carbon black particles are presented in Figure 3 for a range of filler mass fractions
  • In order to examine the effects of Mw on the formation of a network and on flammability properties, PMMA nanocomposites were prepared with SWNTs; these were subjected to the rheological analysis
  • T. et al Flammability properties of polymer nanocomposites with single-walled carbon nanotubes: effects of nanotube dispersion and concentration

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