No abstract

Addition of Ammonium Polyphosphate/Polyamide‐6 system is known to provide flame retardancy in many polymers blends via an intumescent process. Particulate fillers (talc and calcium carbonate) are used in large quantities in PP. Combination of fillers in PP can modify the properties of the polymeric matrix. This study investigates the effect of fillers (talc and calcium carbonate) on the fire performance of the Polypropylene/Ammonium polyphosphate/Polyamide‐6 blend. It is shown that the fire performance strongly depends on the nature of the filler used. Talc increases and calcium carbonate decreases in the fire performance of the blend.

We have investigated the analysis of smoke and gases generated under various thermal decomposition conditions of polyurethane (PU) and fire retarded polyurethane coatings. The use of Fourier Transform Infrared Analysis has allowed the continuous detection of a number of the most important fire gases. We have shown that the addition of ammonium 456 Downloaded from polyphosphate (APP) in PU sharply decreases at the same time the emission of toxic gases such as CO or HCN, the optical density of smoke, the weight loss and the formation of soot. Expandable graphite, when added in PU, enables a decrease in toxic gases in a lower proportion than APP. In addition, we note that oxidation reactions strongly influence the nature of the combustion gases in case of fire.

No abstract

No abstract