FIELD: chemistry.
SUBSTANCE: described is a method for continuous production of products from foamed polystyrene, involving mixing a monomer with a blowing agent and functional additives, polymerisation of the reaction mixture. The method is distinguished by that the styrene monomer is premixed with a carbon dioxide blowing agent taken in liquid-phase supercritical state. Polymerisation is carried out in a frontal polymerisation reactor. Pressure at the output of the reactor is then dropped sharply, leading to foaming of the polymer mass, after which the obtained foamed polymer mass is injected into the mould of the product with its subsequent cooling. Also described is a device for realising the said method, where the said device has a monomer container, an inert gas container, a carbon dioxide container and a carbon dioxide flowmetre, mixers, a plunger pump, a compressor, a cryostat, an aerator for mixing the monomer with carbon dioxide, a frontal polymerisation reactor, a fine adjustment throttle valve, a mould and a condenser.
EFFECT: high-output, energy-saving, environmentally safe continuous method of making products from foamed polystyrene.
3 cl, 1 dwg, 1 tbl
