Improvement in the mechanical and friction performance of poly(ether ether ketone) composites by addition of modificatory short carbon fibers and zinc oxide

2017 ◽  
Vol 30 (6) ◽  
pp. 643-656 ◽  
Author(s):  
Ying Hu ◽  
Xiaochen Hou ◽  
Xiyu Hu ◽  
Dong Jiang

The composites of poly(ether ether ketone) (PEEK) with zinc oxide (ZnO) nanoparticles and short carbon fibers (SCFs) were produced with twin-screw extruder. ZnO nanoparticles were modified by γ-aminopropyl triethoxyl silane (APTES), and SCFs were wrapped with poly(ether sulfone) (PES). Morphological examination showed that the modified ZnO (m-ZnO) nanoparticles and wrapped SCFs (w-SCFs) were well dispersed in PEEK. The tribological behavior of PEEK composites under dry friction conditions was studied using a universal micro-tribotester. Exhaustive experimental results showed that the tribological behaviors, or the mechanical and thermal properties of the composites after the addition of m-ZnO nanoparticles and w-SCFs, were improved. The tribological properties of PEEK/ZnO/SCFs composites with 5.0 wt% functionalized ZnO and 10.0 wt% w-SCFs are the minimum.

2021 ◽  
pp. 117036
Author(s):  
Mingming Si ◽  
Jianyu Hao ◽  
Enda Zhao ◽  
Xuetong Zhao ◽  
Jing Guo ◽  
...  

2017 ◽  
Vol 30 (6) ◽  
pp. 657-666 ◽  
Author(s):  
Fangfang Li ◽  
Ying Hu ◽  
Xiaochen Hou ◽  
Xiyu Hu ◽  
Dong Jiang

In this work, the effect of thermal, mechanical, and tribological properties of the blending system of different contents of short carbon fibers (SCFs) on different-viscosity poly-ether-ether-ketone (PEEK) was reported. The composites were manufactured using injection molding technique. Mechanical and tribological properties were measured by the tensile strength, the flexural strength, the coefficient of friction, and the wear rate. The results showed that the wear resistance and mechanical properties of the PEEK with the lower viscosity appeared on a more outstanding level, and experimental results showed that PEEK composites with added 10 wt% SCFs were optimal about the tribological behaviors and mechanical properties of the composites. Furthermore, based on scanning electron microscope inspections, the situation of the friction and worn surface of the material was explained.


2001 ◽  
Vol 138 (1) ◽  
pp. 84-94 ◽  
Author(s):  
S. Giancaterina ◽  
S. Ben Amor ◽  
E.M. Bachari ◽  
G. Baud ◽  
M. Jacquet ◽  
...  

Author(s):  
Danny Vogel ◽  
Christian Schulze ◽  
Henry Dempwolf ◽  
Daniel Kluess ◽  
Rainer Bader

After total hip arthroplasty, stress-shielding is a potential risk factor for aseptic loosening of acetabular cups made of metals. This might be avoided by the use of acetabular cups made of implant materials with lower stiffness. The purpose of this numerical study was to determine whether a modular acetabular cup with a shell made of poly-ether-ether-ketone or poly-ether-ether-ketone reinforced with carbon fibers might be an alternative to conventional metallic shells. Therefore, the press-fit implantation of modular cups with shells made of different materials (Ti6Al4V, poly-ether-ether-ketone, and poly-ether-ether-ketone reinforced with carbon fibers) and varying liner materials (ceramics and ultra-high-molecular-weight polyethylene) into an artificial bone cavity was simulated using finite element analysis. The shell material had a major impact on the radial shell deformation determined at the rim of the shell, ranging from 17.9 µm for titanium over 92.2 µm for poly-ether-ether-ketone reinforced with carbon fibers up to 475.9 µm for poly-ether-ether-ketone. Larger radial liner deformations (up to 618.4 µm) occurred in combination with the shells made of poly-ether-ether-ketone compared to titanium and poly-ether-ether-ketone reinforced with carbon fibers. Hence, it can be stated that conventional poly-ether-ether-ketone is not a suitable shell material for modular acetabular cups. However, the radial shell deformation can be reduced if the poly-ether-ether-ketone reinforced with carbon fiber material is used, while deformation of ceramic liners is similar to the deformation in combination with titanium shells.


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