Optimization of the Mechanical Properties of Polyolefin Composites Loaded with Mineral Fillers for Flame Retardant Cables

Formulations based on mineral fillers and polymeric matrices of different nature were studied to obtain halogen-free flame retardant compounds (HFFR) for cable applications. The work was carried out by comparing fire-retardant natural origin with synthetic ones available the market. As a reference, formulation micronized magnesium hydroxide (n-MDH, obtained from brucite) an ethylene-vinyl acetate copolymer 28% weight (11% moles) vinyl selected, mechanical properties compared formulations secondary polymers combined EVA, metal hydroxides, carbonates. Notably, we found synergistic effect in mechanical, rheological composite containing mixture n-MDH boehmite 3:1 ratio. Overall, present provided complete optimized recipe polymer composites characterized required features electric cables