3 years ago

Novel nanocomposites based on poly(ethylene-co-vinyl acetate) for coating applications: The complementary actions of hydroxyapatite, MWCNTs and ammonium polyphosphate on flame retardancy

Novel nanocomposites based on poly(ethylene-co-vinyl acetate) for coating applications: The complementary actions of hydroxyapatite, MWCNTs and ammonium polyphosphate on flame retardancy
Nowadays, researchers working in the realm of coating or related industries are expected to propose novel materials with multifunctional capabilities. In this work, novel nanocomposites based on poly(ethylene-co-vinyl-acetate) (EVA) copolymer, hydroxyapatite (HA), carbon nanotubes (CNTs) and ammonium polyphosphate (APP) are proposed and examined for thermal stability and flammability. Thermogravimetric analysis and cone calorimeter tests evidenced that HA/CNTs combination presents a promising effect on both thermal and flame retardancy behavior of EVA. Cone calorimeter results approved in a similar manner that the incorporation of only 5wt.% HA-CNTs into the EVA significantly drops peak of heat release rate (pHRR) (around 37%). The flame retardant effect was further improved when HA or HA-CNTs were associated with APP. The pHRR decreased by 76–77% for EVA containing HA or HA-CNTs and APP compared to the neat EVA. The performance of developed nanocomposites was compared with more than 100 flame retardant systems previously reported in the literature.

Publisher URL: www.sciencedirect.com/science

DOI: S0300944017307087

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