Cone calorimetric analysis

The impact of the nanocomposite technology on polymers is huge, reflected in enhanced properties of the resulting PNs, such as enhanced mechanical, barrier, solvent-resistant, and ablation properties.12 The effect of nanocomposite technology on the thermal and fire performance of the polymers is primarily observed in two important parameters of the polymers (1) the onset temperature (7( ,nsct) in the thermogravimetric analysis (TGA) curve—representative of the thermal stability of the polymer, and (2) the peak heat release rate (peak HRR) in cone calorimetric analysis (CCA)—a reflection of the combustion behavior (the flammability) of the polymer. The Tonset will be increased and the peak HRR will be reduced for a variety of polymers when nanoscale dispersion of the nanoadditive is achieved in the polymer matrix. 

Najafi-Mohajeri, N. Jayakody, C Nelson, G.L. Cone calorimetric analysis of modified polyurethane elastomers and foams with flame-retardant additives. In Fire and Polymers. Materials and Solutions for Hazard Prevention, Nelson, G.L., Wilkie, C.A., Eds. ACS Symposium Series 797 American Chemical Society Washington, 2001 pp. 79-89. 

Figure 7.31 Cone calorimetric analysis of three different epoxy samples unmodified epoxy resin (E+T), layered silicate epoxy resin nanocomposite with 4.7 wt% ammonium bentonite (E+T+TMA) and layered silicate epoxy resin nanocomposite with 4.7 wt% phosphonium bentonite (E+T+TPP). Reprinted with permission from A. Hartwig, D. Putz, B. Schartel, M. Bartholmai and M.Wendschuh-Josties, Macromolecular Chemistry and Physics, 2003,204, 2247 2003, Wiley-VCH Verlag GmbH Co KgaA...

D. Wang, K. Echols, and C.A. Wilkie, Cone calorimetric and thermogravimetric analysis evaluation of halogen-containing polymer nanocomposites, Fire Mater., 2005, 29 283-294. 

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