Abstract
In the work, the fractographic analysis of the structure and boundaries of UHMWPE and UHMWPE-based composites, which were obtained by mechanical activation and hot pressing, was performed using scanning electron microscopy. Aluminum oxide in the form of submicron powder or microspheres, tungsten, boron carbide, zinc oxide, and bronze powder were used as the fillers for the polymer matrix. Due to a high melt viscosity of UHMWPE, the polymer particles retain their shape after hot pressing. The reinforcing phase consists of the particles, which are much smaller than the original polymer particles, and is distributed only over the surface of UHMWPE; therefore, it enhances the strength only of the boundary area. In all cases, the reinforcing particles remain on the surface of the polymer “grains” during mechanical activation treatment and prevent the effect of cold welding.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
