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International audienceA fire protective coating was developped by combining ammonium polyphosphat... more International audienceA fire protective coating was developped by combining ammonium polyphosphate (APP) and sepiolite nanoparticles (SP) in Polyvinyl Alcohol (PVA). This coating was applied on a glass fibre/polyester composite substrate. Upon heat exposure, a thermal barrier was formed than enables to delay the backside temperature rise. The efficiency of the barrier was attributed to the reactivity between APP and sepiolite and the ability of the layer to reradiate heat
International audienceA fire protective coating was developped by combining ammonium polyphosphat... more International audienceA fire protective coating was developped by combining ammonium polyphosphate (APP) and sepiolite nanoparticles (SP) in Polyvinyl Alcohol (PVA). This coating was applied on a glass fibre/polyester composite substrate. Upon heat exposure, a thermal barrier was formed than enables to delay the backside temperature rise. The efficiency of the barrier was attributed to the reactivity between APP and sepiolite and the ability of the layer to reradiate heat
L’utilisation des matériaux composites dans les structures navales s’est amplifiée depuis les ann... more L’utilisation des matériaux composites dans les structures navales s’est amplifiée depuis les années 1970 permettant un gain de poids et un coût de maintenance réduit. Néanmoins, elle s’accompagne d’exigence de sécurité incendie du fait de la dégradation rapide de ces matériaux lorsqu’ils sont soumis à une flamme ou à un flux de chaleur élevé. Ce travail de thèse s’inscrit dans le cadre d’un projet de recherche partenariale avec un constructeur naval dédié à l’étude du comportement au feu des matériaux composites pour la fabrication d’un navire de recherche. Des stratégies d’ignifugations des matériaux composites avec des solutions commerciales ont été testées dans une première approche. La comparaison de retardateurs de flamme en masse et d’ignifugation en surface a été mise en place pour juger de l’efficacité de ces stratégies sur la réaction au feu du composite. De plus, une évaluation de la résistance au feu d’une solution choisie a été menée à l’aide du cône calorimètre. Par la...
Journal of Composites Science
A poly(vinyl alcohol) (PVA)-based coating containing ammonium polyphosphate (APP) and sepiolite n... more A poly(vinyl alcohol) (PVA)-based coating containing ammonium polyphosphate (APP) and sepiolite nanofillers (SP) and supported by a glass fabric was developed to fire-protect a glass-fiber-reinforced unsaturated-polyester-based (UP) polymer (GFRP). The fire behavior and thermal stability of the PVA coatings were characterized using thermogravimetric analysis (TGA) and a cone calorimeter. The coatings’ residues were investigated by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The results from the cone calorimeter showed that the addition of sepiolite significantly improves the flame retardancy of PVA/APP/SP coatings. The addition of both additives promoted the formation of a cohesive layer composed of a silico-phosphate structure resulting from the reactivity between APP and SP. The fire resistance of the composite laminate protected by PVA coatings was evaluated using a cone calorimeter by measuring the temperature of the back face. Photogrammetry was used to asse...
International audienceA fire protective coating was developped by combining ammonium polyphosphat... more International audienceA fire protective coating was developped by combining ammonium polyphosphate (APP) and sepiolite nanoparticles (SP) in Polyvinyl Alcohol (PVA). This coating was applied on a glass fibre/polyester composite substrate. Upon heat exposure, a thermal barrier was formed than enables to delay the backside temperature rise. The efficiency of the barrier was attributed to the reactivity between APP and sepiolite and the ability of the layer to reradiate heat
International audienceA fire protective coating was developped by combining ammonium polyphosphat... more International audienceA fire protective coating was developped by combining ammonium polyphosphate (APP) and sepiolite nanoparticles (SP) in Polyvinyl Alcohol (PVA). This coating was applied on a glass fibre/polyester composite substrate. Upon heat exposure, a thermal barrier was formed than enables to delay the backside temperature rise. The efficiency of the barrier was attributed to the reactivity between APP and sepiolite and the ability of the layer to reradiate heat
L’utilisation des matériaux composites dans les structures navales s’est amplifiée depuis les ann... more L’utilisation des matériaux composites dans les structures navales s’est amplifiée depuis les années 1970 permettant un gain de poids et un coût de maintenance réduit. Néanmoins, elle s’accompagne d’exigence de sécurité incendie du fait de la dégradation rapide de ces matériaux lorsqu’ils sont soumis à une flamme ou à un flux de chaleur élevé. Ce travail de thèse s’inscrit dans le cadre d’un projet de recherche partenariale avec un constructeur naval dédié à l’étude du comportement au feu des matériaux composites pour la fabrication d’un navire de recherche. Des stratégies d’ignifugations des matériaux composites avec des solutions commerciales ont été testées dans une première approche. La comparaison de retardateurs de flamme en masse et d’ignifugation en surface a été mise en place pour juger de l’efficacité de ces stratégies sur la réaction au feu du composite. De plus, une évaluation de la résistance au feu d’une solution choisie a été menée à l’aide du cône calorimètre. Par la...
Journal of Composites Science
A poly(vinyl alcohol) (PVA)-based coating containing ammonium polyphosphate (APP) and sepiolite n... more A poly(vinyl alcohol) (PVA)-based coating containing ammonium polyphosphate (APP) and sepiolite nanofillers (SP) and supported by a glass fabric was developed to fire-protect a glass-fiber-reinforced unsaturated-polyester-based (UP) polymer (GFRP). The fire behavior and thermal stability of the PVA coatings were characterized using thermogravimetric analysis (TGA) and a cone calorimeter. The coatings’ residues were investigated by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The results from the cone calorimeter showed that the addition of sepiolite significantly improves the flame retardancy of PVA/APP/SP coatings. The addition of both additives promoted the formation of a cohesive layer composed of a silico-phosphate structure resulting from the reactivity between APP and SP. The fire resistance of the composite laminate protected by PVA coatings was evaluated using a cone calorimeter by measuring the temperature of the back face. Photogrammetry was used to asse...