期刊
POLYMER COMPOSITES
卷 -, 期 -, 页码 -出版社
WILEY
DOI: 10.1002/pc.27637
关键词
epoxy resin; flame retardant; graphene oxide; intercalation; layer space
Despite its many merits, the practical application of epoxy (EP) is significantly hindered by its intrinsic flammability. Intercalation-functionalized graphene oxide (GO) has shown excellent performance in flame retardancy studies, but the effect of layer spacing on the flame retardant performance of polymers is still lacking. Three GO flame retardants with different layer spacing were prepared and evaluated for flame retarding EP composites. The results showed that the layer spacing of GO significantly affects the flame retardancy of the composite by influencing the formation of a protective char layer.
Intrinsic flammability significantly impedes practical applications of epoxy (EP), despite many merits. Intercalation-functionalized graphene oxide (GO) has shown excellent performance in flame retardancy studies of polymers, but research investigating the effect of layer spacing on the flame-retardant performance of polymers is still lacking so far. Therefore, three GO flame retardants with different layer spacing were prepared to flame retardant EP. When the layer spacing of GO is 1.09 nm, the heat and smoke release from EP composites is effectively suppressed. This is attributed to the barrier effect and maze effect of GO as well as the synergistic effect between the intercalator and GO. Analysis shows that the layer spacing of GO affects the flame retardancy of the composite by influencing the formation of protective char layer.
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