Sage Journals: Discover world-class research

Abstract

Auto-ignition temperature of polystyrene, poly(vinyl chloride) and carboxy terminated polybutadiene has been measured at various oxygen pressures (1-28 atm) in a high pressure differential thermal analysis assembly at a heating rate of 10°C/min. The exothermic peak appears between 250-350°C in polystyrene and poly(vinyl chloride) and between 150-200°C for carboxy terminated polybutadiene. Ignition appears to be controlled by in situ forma tion and degradation of polymeric peroxides. Inverse dependence of ignition temperature on oxygen pressure is explained by the rate equation which con siders that ignition of a particular sample, of a fixed geometry, occurs when gasification rate reaches a unique critical value.

Keywords

Auto-ignition temperature High pressure DTA Polymeric perox ides Polymer gasification.

Get full access to this article

View all access options for this article.

References

Kishore, K. , PaiVerneker, V.R. and Prasad, G. , "Effect of Storage Temperatures on the Mechanical Properties of the Composite Solid Propellants," Combust. Sci. and Technol. , Vol. 19, p. 107 (1979).

Kishore, K. , PaiVerneker, V.R. , Shobha, K.R. and Sankaralingam, S. , "Some Features of Solid Propellant Chemistry," Combust. and Flame., Vol. 46, p. 323 (1982).

Kishore, K. , PaiVerneker, V.R. and Sunitha, M.R. , "Action of Transition Metal Oxides on Composite Solid Propellants," Amer. Inst. Aeron. Astron., Vol. 18, p. 1404 (1980 ).

Kishore, K. and Mohandas, K. , "Effect of Additives on the Ignition Behaviour of Polystyrene," J. Fire Retard. Chem., Vol. 9, p. 115 (1982).

Kishore, K. , Mohandas, K. and Annakutty, K.S. , "Is Gasification Rate Controlling Step in Polymer Ignition," Combust. Sci. and Technol., Vol. 31, p. 183 (1983 ).

Kishore, K. , Nagarajan, R. and Mohandas, K. , "Polymer Ignition—A Review," Polym. Engg. Rev ., Vol. 2, p. 257 (1983).

Kishore, K. , PaiVerneker, V.R. and Gayathri, V. , "Reaction Intermediates During the Combustion and Decomposition of Some Model Solid Rocket Fuels;' Fuel, Vol. 60, p. 164 (1981).

Hendry, D.G. , in Encylopedia of Polymer Science and Technology, Vol. 9, John Wiley and Sons Inc., pp. 807-814 (1968).

Kishore, K. , Gayathri, V. and Ravindran, K. , "Formation and Degradation of Polymeric Peroxides," J Macromol. Sci. Chem., Vol. A16, p. 1359 (1981).

10.

Kishore, K. and Mohandas, K. , "Ignition Behaviour of Polystyrene;' Combust. Sci. Technol., Vol. 29, p. 299 (1982).

11.

Kishore, K. and Mohandas, K. , "Polymer Gasification Processes: A Review," Polym. Engg. Rev., Vol. 2, p. 189 (1983).

Effect of Pressure on Polymer Ignition

Abstract

Keywords

Get full access to this article

References