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Full-Text Articles in Physical Sciences and Mathematics
Comparative Study On The Flammability Of Polyethylene Modified With Commercial Fire Retardants And A Zinc Aluminum Oleate Layered Double Hydroxide, Charles Manzi-Nshuti, Jeanne Hossenlopp, Charles A. Wilkie
Comparative Study On The Flammability Of Polyethylene Modified With Commercial Fire Retardants And A Zinc Aluminum Oleate Layered Double Hydroxide, Charles Manzi-Nshuti, Jeanne Hossenlopp, Charles A. Wilkie
Chemistry Faculty Research and Publications
Polyethylene (PE) was modified by the addition of a layered hydroxide of zinc aluminum oleate (ZnAl) and/or commercial fire retardants. Commercial additives included: melamine polyphosphate (MPP), ammonium polyphosphate (APP), triphenol phosphate (TPP), resorcinol diphosphate (RDP), decabromophenyl oxide (DECA) and antimony oxide (AO). The thermal stability and the combustion behaviors of the new composite polymeric materials are evaluated in TGA experiments and cone calorimetry. At 20% total additive loading, APP and LDH enhance the thermal stability of the PE composites and favor char formation. ZnAl leads to the best reduction in the peak of heat release rate (PHRR), 72%, while the …
Thermal Stability And Flammability Characteristics Of Ethylene Vinyl Acetate (Eva) Composites Blended With A Phenyl Phosphonate-Intercalated Layered Double Hydroxide (Ldh), Melamine Polyphosphate And/Or Boric Acid, Calistor Nyambo, Everson Kandare, Charles A. Wilkie
Thermal Stability And Flammability Characteristics Of Ethylene Vinyl Acetate (Eva) Composites Blended With A Phenyl Phosphonate-Intercalated Layered Double Hydroxide (Ldh), Melamine Polyphosphate And/Or Boric Acid, Calistor Nyambo, Everson Kandare, Charles A. Wilkie
Chemistry Faculty Research and Publications
A phenyl phosphonate-intercalated MgAl–LDH (MgAl–PPh), melamine polyphosphate (MP), and boric acid (BA) were independently and concomitantly added to neat ethylene vinyl acetate (EVA) copolymer at loading fractions of 10% (w/w). The structural morphology of MgAl–PPh was established via powder X-ray diffraction (PXRD) and scanning electron microscopy (SEM) while the presence of phenyl phosphonate in the galleries was confirmed by Fourier transform infrared (FTIR). Thermogravimetric analysis (TGA) and cone calorimetry were used to evaluate the thermal stability and flammability behavior of EVA and its composites. While time-to-ignition is greatly reduced for EVA composites compared to the virgin polymer, there are remarkable …