The present invention discloses a preparation method of granular recycled plasticized rubber, which is used in the field of reclaimed rubber production. The preparation method comprises the following production steps: A1 Raw material preparation: preparing plasticized rubber powder from fine vulcanized rubber powder produced by a room temperature mechanical pulverization method after plastic processing; A2 Batching: blending the plasticized rubber powder prepared in A1 with a softener in proportion; A3 Processing and conveying of the blend; A4 Finished product output and packaging. Using plasticized rubber powder as the raw material, the present invention is prepared for the first time in a closed cavity at an ambient temperature below 200°C by a twin-screw extruder under the actions of rolling, shearing, tearing and conveying of the co-rotating twin screws. The granular recycled plasticized rubber has a greatly increased contact area with powdery materials, better bonding performance with powders, and the rubber products produced therefrom have more stable performance and good fusion property. With excellent performance, it can partially or completely replace natural rubber and synthetic rubber to produce various rubber products, reduces production cost, has a market demand exceeding supply, and fills the gap in the industry.
Country Code: CN
Application Number: CN202410303055.3
