Hybrid effect of nanoparticles with carbon fibers on the mechanical and wear properties of polymer composites

• Published in: Composites. Part B, Engineering Vol. 43; no. 1; pp. 44 - 49
• Main Authors: Lin, Guo-ming, Xie, Guang-you, Sui, Guo-xin, Yang, Rui
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Kidlington Elsevier Ltd 2012; Elsevier
• Subjects: A. Polymer-matrix composites (PMCs); Applied sciences; B. Wear; carbon; Composites; Exact sciences and technology; extrusion; Forms of application and semi-finished materials; friction; Nanocomposites; Nanomaterials; nanoparticles; Nanostructure; Particulate composites; Polyetheretherketones; Polymer industry, paints, wood; Polymer matrix composites; polymers; shear stress; Sliding; Technology of polymers; tensile strength; Wear; A. Polymer-matrix composites (PMCs); B. Wear; Double screw extruder; Fiber reinforced material; Polyetheretherketone; Mechanical properties; Dispersion reinforced material; Tensile property; Experimental study; Mineral fiber; Hybrid composite; Oxide ceramics; Composite material; Young modulus; Zirconium oxide; Concentration effect; Friction coefficient; Extrusion; Nanocomposite; Wear resistance; Carbon fiber; Tribology
• ISSN: 1359-8368; 1879-1069
• DOI: 10.1016/j.compositesb.2011.04.029

Polyetheretherketone (PEEK) composites reinforced with carbon fibers (CFs) and nano-ZrO 2 particles were prepared by incorporating nanoparticles into PEEK/CF composites via twin-screw extrusion. The effects of nanoparticles on the mechanical and wear properties of the PEEK/CF composites were studied. The results showed that the incorporation of nano-ZrO 2 particles with carbon fiber could effectively enhance the tensile properties of the composites. The tensile strength and Young’s modulus of the composites increased with the increasing nano-ZrO 2 content. The enhancement effect of the particle was more significant in the hybrid reinforced composites. The compounding of the two fillers also remarkably improved the wear resistance of the composites under water condition especially under high pressures. It was revealed that the excellent wear resistance of the PEEK/CF/ZrO 2 composites was due to a synergy effect between the nano-ZrO 2 particles and CF. CF carried the majority of load during sliding process and prevented severe wear to the matrix. The incorporation of nano-ZrO 2 effectively inhibited the CF failures through reducing the stress concentration on the carbon fibers interface and the shear stress between two sliding surfaces. It was also indicated that the wear rates of the hybrid composites decreased with the increasing applied load and sliding distance under water lubrication. And low friction coefficient and low wear rate could be achieved at high sliding velocity.