| abstract |
The present invention relates to a method for producing flame-retardant polystyrene using waste foamed polystyrene, and more specifically, preparing a modified limonene solvent, preparing a modified colloidal sodium silicate solution, based on 100 parts by weight of the modified limonene solvent, waste foaming A step of producing a sol-like product by adding and stirring 50-300 parts by weight of polystyrene, and adding and stirring 100-200 parts by weight of a sol-like product to 100 parts by weight of a modified colloidal sodium silicate solution. It provides a method for producing flame-retardant polystyrene using waste expanded polystyrene comprising the step of generating. According to the present invention, it reduces the odor of limonene, which has been widely used as a conventional solvent, reduces the risk during operation and increases stability due to the low boiling point of limonene, and adjusts the viscosity during stirring by adding a stabilizer and a slipping agent, and has mechanical and physicochemical properties. Can improve. |