Smoke and toxicant production during thermal degradation

摘要

AbstractA series of materials were tested in a radiant furnace for their production of toxicants (carbon monoxide and hydrogen chloride) while concurrently measuring the weight remaining of the test specimen. In addition, the effect of sample form on toxicant production was considered for Douglas fir and polyvinyl chloride. The smoke‐exposure profile was found to be dependent on the material's form. The specimen‐irradiation time and the incident heat flux. The calculation of exposure using a Ct product based on the area under the production curve was found useful for smoke and toxicants. Concentrations of toxic gases produced were not linearly related to sample‐weight loss throughout the experiments. The influence of sample form on smoke and toxicant production was greater for Douglas fir than for polyvinyl chloride. The results indicate that in toxicity tests samples should be tested in their end‐use form and that a material's thermal properties may influence toxicity‐value cal