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A Cone Calorimetric Study of Flame Retardance and Smoke Emission of PVC. I. The Effect of Cuprous and Molybdic Oxides*

National Laboratory of Flame Retarded Materials School of Chemical Engineering & Materials Science Beijing Institute of Technology 100081 Beijing, China

Jianqi Wang

National Laboratory of Flame Retarded Materials School of Chemical Engineering & Materials Science Beijing Institute of Technology 100081 Beijing, China

A wealth of literature in research at molecular levels concern ing the transition metals, e.g., Cu- and Mo-containing compounds, has been intensively documented for flame retardance, particularly smoke suppres sion, of PVC. An attempt has been made in this article aimed at performing a cone calorimetric analysis in air at irradiances of 25, 35, and 50 kWm^-2 for ex ploring the effect of Cu₂O and MoO₃ on the thermal behavior of PVC. Some mechanistic aspects on flame retardance and smoke generation of PVC for mulations have also been described based upon parameters, such as TTI, HRR, EHC, SEA, and TSP, etc., taken from the cone. The comprehensive analysis of MLR, HRR, and SPR as functions of time turns out to be most in formative as stated in the text.

Key Words: cone calorimetry • flame retardance • smoke emission • PVC • cu prous oxide • molybdic oxide.

Journal of Fire Sciences, Vol. 15, No. 5, 341-357 (1997)
DOI: 10.1177/073490419701500501


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