PROCEDURE AND DEVICE FOR THE PRODUCTION OF HIGHLY ACTIVE RUBBER POWDER FROM RUBBER WASTE.

摘要

Procedure for the production of highly active rubber powder with a specific geometric surface of 0.4 to 5 m2 / g from used tires and vulcanized waste of rubber technical articles based on different rubbers in an extruder type apparatus with thermomechanical influence , characterized by the fact that the crushing of vulcanized rubber is carried out in two phases: - according to conditions with a pulsed volume tension of 15 to 250 Mpa that increases at a speed of 5 to 90 MPa / s, with an amplitude of + - 5 to 20 MPa and a frequency of 5 to 600 Hz, as well as with a temperature that increases at a speed of 50 to 150 ° C / s in a range of 90 to 380 ° C, with simultaneous saturation of rubber gases with products of decomposition of plasticizing media and other components belonging to the composition of the rubber, a fine crushing is carried out in the first place with the formation of a porous structure in the volume of the particles , - by a pronounced decrease in the volume tension at a speed of 50 to 150 MPa / s the porous structure is destroyed, the specific geometric surface of the rubber particles increases and the rubber particles are cooled.