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Improvement of flame retardant of PE/EVA using nano-sized magnesium hydroxide
Paper ID : 2209-UFGNSM13-FULL
Authors:
Abstract:
Flame retardant polyethylene (PE) / ethylene–vinyl acetate (EVA) blends are commonly used in wire and cable coating. Magnesium hydroxide (MH) as a halogen-free flame-retarded additive is applied to improve the flame resistance and smoke suppression of PE/EVA. However, achieving the balance between the enhancement of flame resistance and reduction of mechanical properties is still a challenge to the wire and cable industries. In this work, the effect of the nano-particle size of MH (nano-MH) on the flame resistance, suppression of smoke density, and mechanical properties of PE/EVA blend was investigated and compared with micro-particle size of MH (micro-MH). The PE/EVA composite filled with different contents of both MH are prepared using an internal mixer and then mechanical and thermal properties of those were investigated. Results show that the composites based on nano-MH yielded better mechanical properties than micro-MH composites due to good dispersion and the interactions between polymer and nano-MH. Comparing the flame retardant properties shows the nano-MH can enhance both fire retardancy and mechanical properties.
Keywords:
Polyethylene, Ethylene–vinyl acetate, Magnesium hydroxide, Flame retardant, Mechanical properties
Status : Paper Accepted (Poster Presentation)