The mechanism by which a typical fire retardant chloroparaffin imparts fire retardant characteristics to high density polyethylene, polypropylene and polystyrene is studied by comparing the oxygen indices of these mixtures measured before and after dehydrochlorination. It is shown that flame poisoning by HCl evolved from the chloroparaffin is negligible in polystyrene and high density polyethylene, whereas it is noticeable in polypropylene. The results obtained are related to previous data on the thermal degradation of these mixtures. It is concluded that the chloroparaffin acts mainly by modifying the mechanism of pyrolysis of these polymers in the burning process. Only in the case of polypropylene is there an appreciable contribution by flame poisoning.
|Titolo:||Mechanism of action of a fire retardant chloroparaffin|
|Data di pubblicazione:||1985|
|Digital Object Identifier (DOI):||10.1016/0141-3910(85)90071-0|
|Appare nelle tipologie:||1.1 Articolo in rivista|
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