Investigation of the enhancement in current-carrying friction performance with internal “copper network structure” constructed by pre-oxidized carbon fibers of the carbon skateboard

Abstract

The increased speed requirements for high-speed rails necessitate the enhancement in specifications for carbon skateboard properties. The main challenges faced by carbon skateboards are their limited ability to withstand severe impacts and their high resistance levels. Hence, a new and innovative approach is utilized to create a novel carbon skateboard material. The key technique involved in this approach is the creation of a "copper network structure" within the carbon skateboard by using pre-oxidized carbon fibers. The matching performance of the carbon skateboard was examined through a current-carrying friction wear test conducted at various currents. The dynamic friction coefficient of the contact pair was less than 0.51 and the electrical contact resistance remained at most 15.89 mΩ. In addition, while the temperature rises of the contact interface increased, it remained less than 108 °C. This work represents a breakthrough in the preparation of a high-performance carbon skateboard, which has significant value for guiding the optimal design of carbon skateboards used in the pantographs of high-speed trains.