Structure and tribomechanical properties of extrudable ultra-high molecular weight polyethylene composites fabricated by 3D-printing
Abstract
A comparative analysis on the structure, mechanical and tribological properties of the multicomponent polymer-polymeric composites "UHMWPE + 15 wt.% HDPE-g-SMA + 15 wt.% PP" fabricated by Fused Deposition Modeling (layer-by-layer extrusion printing) and hot pressing (compression sintering) was carried out. It is shown that extrudable UHMWPE composites fabricated by 3D-printing over the set of key tribomechanical properties (wear resistance, friction coefficient, elastic modulus, yield point, tensile strength, a value of elongation at break) exceed those of the composites obtained by compression sintering (CS). The reason of the latter is associated with the formation of a more uniform ordered permolecular structure with increased crystallinity. This makes it possible to recommend this material for the manufacturing complex shape products for tribotechnical applications by means of 3D-printing.
- Publication:
-
Oil and Gas Engineering: (OGE-2019)
- Pub Date:
- August 2019
- DOI:
- 10.1063/1.5122130
- Bibcode:
- 2019AIPC.2141d0011P