| 초록 |
Halogen-based flame retardants are highly efficient and widely used. However, they have been abandoned due to the toxic halide formation. To avoid the formation of the toxic gases, nitrogen-containing flame retardants have been developed. 2-D carbon nitride has been used as a flame retardant because of its thermal stability, non-flammable gas releasing property. Nevertheless, carbon nitride is too stable to release enough non-flammable gases. To prepare more efficient flame-retardant, we synthesized heptazene-coated iron oxide. Iron oxide might have a catalytic action during the combustion acting as the synergists in the formation of the char. In addition, iron oxide itself can improve the thermal stability of the composite. In this study, iron oxide/heptzaene filler was synthesized by the ball milling and the heat treatment at 360 °C. The synthesized filler was characterized by SEM, XRD analysis to optimize the melamine to iron oxide ratio. |
