Análise de ensaio de incombustibilidade em amostras de forro de policloreto de vinila - PVC.

Abstract

There is an increasing incidence of fires in Brazilian territory, with fatal victims or not. Although there has been increased concern with Fire Prevention and Protection still can not see much improvement in the fire performance of buildings. Recently, the fire of Kiss nightclub, in Santa Maria –RS moved the country and triggered in the RS the creation of the Complementary Law 14.376, of 2013. Still, there is a certain disregard for certain very important aspects of a fire. In Brazil, engineers sign technical liability annotations of finishing and coating materials control reports of the most diverse types of materials, attesting that they meet the required fire reaction characteristics, without at least performing a test to prove this fact. At the same time, the Rio Grande do Sul Military Fire Brigade does not demand the implementation of these tests, nor from the manufacturer of the material, nor of the engineer responsible for the report. In this context, the present work aimed to analyze the fire performance of a material used around the country, Polychloride of Vinyl, often given as incombustible. The experimental analysis method was used, through an incombustibility test, to obtain data to characterize the material as combustible or non-combustible. With the incombustibility test, it was observed a great loss of mass of the samples, with losses of up to 86%; a thermal variation at the analyzed points much greater than 30ºC as established by the test regulatory standard; and blaze occurrences that exceed 150 seconds when the maximum allowed for an incombustible material is 10 seconds. Thus, it was realized that this material tends not only to be combustible, but also a great emitter of toxic gases, due to its composition. This study is not intended to condemn the use of the material, but to draw attention to the fact that this can be a potential cause of death when the occurrence of fires.