The effects of Ni2+-Fe3+ layered double hydroxide (LDH) as a synergistic agent on the flame retardancy of intumescent flame retardant (IFR) polypropylene composites were studied, and the IFR system mainly consisted of melamine phosphate (MP) and pentaerythritol phosphate (PEPA). The flame retardancy was studied by the limiting oxygen index (LOI), UL-94 test, cone calorimeter (CONE). Char residues were analyzed by scanning electron microscopy (SEM). It is shown that a little addition (0.2 wt.%) of Ni2+-Fe3+ LDH could improve the flame retardancy of PP/MP/PEPA composites remarkably. The Ni2+-Fe3+ LDH also has influence on the structure of char residual, which contributes to the better fire performance and thermal stability of materials.

Synergistic effects of Ni<sup>2+</sup>-Fe<sup>3+</sup> layered double hydroxide on intumescent flame retarded polypropylene composites containing melamine phosphate and pentaerythritol phosphate

243rd National Meeting (2012)

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Synergistic effects of Ni2+-Fe3+ layered double hydroxide on intumescent flame retarded polypropylene composites containing melamine phosphate and pentaerythritol phosphate

Synergistic effects of Ni²⁺-Fe³⁺ layered double hydroxide on intumescent flame retarded polypropylene composites containing melamine phosphate and pentaerythritol phosphate