High-toughness halogen-free flame-retardanting reclaimed polycarbonate compound and preparation method thereof

The invention relates to a high-toughness halogen-free flame-retardanting reclaimed polycarbonate compound and a preparation method thereof, belonging to the field of reclaimed plastic flame-retardanting and toughening-modified products. The invention aims to provide a high-toughness halogen-free flame-retardanting reclaimed polycarbonate compound which uses reclaimed polycarbonate as a matrix. The invention is characterized in that the compound comprises the following components by weight percent: 81.0-93.4% of reclaimed polycarbonate, 3.0-10.0% of latex particles of core-shell silicon rubber, 1.0-7.0% of bulking agent, 0.1-0.5% of antioxidant, 0.1-0.5% of light stabilizer, 0.1-0.5% of ultra-violet absorber, 0.8-1.2% of heat barrier and 0.3-0.5% of anti-dripping agent. The preparation method of the compound comprises the following steps: evenly mixing the components, melting the components on a double-screw extruder, blending, extruding, cooling and pelleting the melted components to prepare the reclaimed polycarbonate compound. The compound has the advantages of good anti-impact properties, retardanting level of UL94 V-0 and low cost, thereby meeting the requirements of industries such as electronic and electric products and the like on the high-property polycarbonate engineering plastics.