Polypropylene grafted by cardanol(PP-g-cardanol) was prepared by reactive extrusion by torque rheometer in this paper. The effects of combinations of whorled components on the grafting ratio of PP-g-cardanol,the reological properties and the mechanical properties were studied. Results showed that the S4 configuration of whorled components was beneficial to separate feeding because its melting section used two-section kneading block. The homogenizing section adopted the design of two-section kneading block p...