X-ray Photoelectron Spectroscopy Study of the Ammonium Polyphosphate—Polyurethane System used as Fire-Retardant Additive in EVA
Source abstract
Abstract
First, the efficiency of a mixture PU/APP as fire retardant in an ethylene-vinyl acetate matrix is investigated. It is shown that the fire performance is sharply improved. Second, the mechanism of fire retardancy of PU/APP is discussed considering the protective surface material, investigated by X-ray photoelectron spectroscopy. It is shown that APP contributes to the formation of the intumescent shield creating stable nitrogenated as well as phosphorus compounds via reaction with PU and/or with its degradation products. Such species modifies the mechanical properties of the shield resulting in an improvement of its fire retarding properties.
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Research context
OpenAlex topics: Flame retardant materials and properties · Fire dynamics and safety research · Combustion and Detonation Processes
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Laboratoire des Procédés d'Elaboration de Revêtements Fonctionnels UPRES EA 1040, E.N.S.C.L.-USTL, BP 108, F-59652 Villeneuve d'Ascq Cedex, France
Laboratoire des Procédés d'Elaboration de Revêtements Fonctionnels UPRES EA 1040, E.N.S.C.L.-USTL, BP 108, F-59652 Villeneuve d'Ascq Cedex, France, Centre de Recherche et d'Etude sur les Procédés d'Ignifugation des Matériaux, Bruay-la-Buissière, France
Politecnico di Torino, Sede di Alessandria Centro di Cultura per l'Ingegneria delle Materie Plastiche, Italy
Laboratoire de Catalyse Hétérogène et Homogène UPRESA-CNRS 8010, USTL Villeneuve d'Ascq, France
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