▎ 摘　　要

In this study, an easy and low-temperature differential hollow roller using an ultra-thin heating element of graphene polymeric composite material by wire bar coating technique was first demonstrated and fabricated successfully. In contrast to the conventional hot roller, this study confirmed the flexibility of high uniform temperature distribution in the rolling system. The dynamic-state temperature differential of four quarter positions and horizontal positions can be controlled within 2.8 degrees C and 1.2 degrees C with a voltage of 40 V, respectively. High-Temperature stability of long-term steady-state temperature was confirmed and the voltage only needs 25 V to get a steady-state temperature of almost 160 degrees C.