FOAM POLYSTYRENE-BASED BEAD AND METHOD FOR MANUFACTURING SAME

摘要

The present invention relates to a foam polystyrene-based bead. The foam polystyrene-based bead includes: a core containing a styrene-based resin, a char-generating thermoplastic resin, and an inorganic foam; and a skin disposed on the surface of the core, wherein the skin contains a resin of which the glass transition temperature is below around 120°C. Here, the foam is contained in the core or skin. The core may further include a carbon filter. The foam manufactured from the flame retardant foam polystyrene-based bead does not conform to KS F ISO 5660-1, but is a self-extinguishing flame retardant material. Thus, the foam may have improved flameproof properties as compared to those of a flame retardant material (flame retardant 3rd degree), better thermal insulation performance, and superior mechanical strength.