Naslov
Study of flammability and thermal properties of high-impact polystyrene nanocomposites

Autori
Katančić, Zvonimir ; Travaš-Sejdić, Jadranka ; Hrnjak-Murgić, Zlata

Izvornik
Polymer degradation and stability (0141-3910) 96 (2011), 12; 2104-2111

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
flammability; thermal degradation; high-impact polystyrene; silica; nanocomposites

Sažetak
To increase thermal stability and flammability of high impact polystyrene (HIPS) nanocomposites with silica nanoparticles and two types of polyphosphate flame retardants were prepared by extrusion. Nanocomposites were characterized by thermogravimetric analysis, differential scanning calorimetry, X-ray diffraction, scanning electron microscope, limiting oxygen index (LOI) analysis and the evaluation of mechanical properties. It was found that organic polyphosphate in combination with silica increased thermal stability and fire retardancy by 50% in LOI test. Morphology characterization revealed existence of crystalline order which affected mechanical properties ; tensile strength was approximately the same as virgin HIPS while elasticity was sharply decreased. Ammonium polyphosphate did not affect mechanical properties as much as organic but was not equally efficient in flame retardancy which was just marginally increased.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo

POVEZANOST RADA