Structure and properties of halogen-free flame retardant poly (vinyl alcohol)/melamine phosphate composites
作者：Dan Guo, Shibing Bai, Qi Wang
關鍵字：Halogen-free flame retardant, Poly (vinyl alcohol), Melamine phosphate, Thermal processing
論文來源：會議
發表時間：2013年
This paper reported the
structure and properties of halogen-free flame retardant poly (vinyl alcohol)
/melamine phosphate (PVA/MP) composites prepared through thermal processing using water as plasticzer.
SEM analysis showed that the halogen-free flame retardant MP was well dispersed in
PVA matrix due to the strong interactions between MP and PVA. Combustion test showed that the
prepared composites had excellent flame retardancy, its limiting oxygen index
(LOI) reached 35% and passed the UL94 V-0 rating test, and compared to the
control sample, its peak heat release rate (PHRR) declined, the temperature at
the maximum peak heat release rate (TP) shifted to higher temperature,
the total heat released (THR) and the heat release capacity (HRC) decreased
significantly. The
catalytic effect of MP on the dehydration and decarboxylation reactions of PVA,
and the chemical reactivity of MP during the chars forming reactions could be
used to account for the improved flame retardancy of the halogen-free
flame retardant PVA/MP
composites. The composites showed
potential applications as a novel halogen-free flame retardant polymer with
excellent comprehensive properties.