Testing the mechanical and tribological properties of new metal-polymer nanocomposite materials based on linear low-density polyethylene and Al65Cu22Fe13 quasicrystals

Metal-polymer nanocomposite materials based on linear low-density polyethylene (LLDPE) and Al65Cu22Fe13 quasicrystals were first obtained by melt-blending. The methods of thermal analysis and dynamic mechanical analysis were used to analyze the thermal stability and physicomechanical properties of the obtained nanocomposite materials. It has been found that increasing the content of nanofillers increases the elastic modulus, but tensile strength also increases, especially at low filler concentrations. Friction and wear were assessed on pinon-disc tester. The results show that the friction coefficient of the sample with 1 wt% content of nanofiller is lower than that of pure LLDPE, and the anti-wear properties of the composite material are increased by 57% compared to pure LLDPE. In addition, during friction with a load of up to 147 N, a protective antifriction film of metallic nanoparticles on the friction surface forms for this sample.