Tribological properties of polyethylene based composites with fillers on iron based

Abstract

This work is devoted to identifying patterns of influence of powders of carbonyl iron and magnetic alloy Fe-Cu-Nb-Si-B, on the tribological properties of polymer composites based on ultra high molecular weight polyethylene (UHMWPE) and high pressure polyethylene (LDPE). It has been established that the introduction of a magnetically soft alloy powder into a polymer matrix based on LDPE significantly reduces the coefficient of friction. The best results are achieved at concentrations of 2.5 and 5.0%. The introduction of carbonyl iron in the matrix LDPE increases the coefficient of friction. The introduction of both carbonyl iron and soft magnetic powder into the UHMWPE polymer matrix leads to a significant increase in the friction coefficient. The wear rate of samples based on LDPE filled with carbonyl iron decreases by 53% at a concentration of 2.5% and continues to decrease to 74% at a concentration of 10.0%. When the LDPE matrix is filled with a powder of a magnetic alloy, this indicator decreases by more than 80%. The wear rate of UHMWPE-based composites when the matrix is filled with a magnetically soft alloy with a concentration of up to 10.0% decreases by 70%, while when filled with carbonyl iron to 10.0% it increases by 60%.