Poly(ether ether ketone) composites reinforced by short carbon fibers and zirconium dioxide nanoparticles: Mechanical properties and sliding wear behavior with water lubrication

2010 ◽  
Vol 119 (3) ◽  
pp. 1711-1720 ◽  
Author(s):  
Y. J. Zhong ◽  
G. Y. Xie ◽  
G. X. Sui ◽  
R. Yang
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.


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.


Carbon ◽  
2011 ◽  
Vol 49 (8) ◽  
pp. 2817-2833 ◽  
Author(s):  
Ana M. Díez-Pascual ◽  
Behnam Ashrafi ◽  
Mohammed Naffakh ◽  
José M. González-Domínguez ◽  
Andrew Johnston ◽  
...  

2019 ◽  
Vol 32 (1) ◽  
pp. 103-115 ◽  
Author(s):  
Syarifah Noor Syakiylla Sayed Daud ◽  
Muhammad Noorul Anam Mohd Norddin ◽  
Juhana Jaafar ◽  
Rubita Sudirman

Sulfonated poly(ether ether ketone) (sPEEK) membrane is a promising proton-conducting membrane for fuel cell. However, the performance and lifetime of sPEEK membrane depend on the degree of sulfonation (DS). High DS of sPEEK increases the performance, but the mechanical properties could deteriorate progressively which affect its lifetime. Thus, this study investigated the effect of adding polyvinylidene fluoride (PVDF) into high DS (80%) of sPEEK through solution blending method toward its physicochemical properties and morphology structures. The PVDF concentration was varied to 5, 10, 15, and 20 wt% relative to the sPEEK content. The existence of hydrophobic PVDF in 80% sPEEK improved the mechanical properties where the water uptake and swelling degree of membrane decreased, whereas the tensile strength increased. The sPEEK/PVDF 15 exhibited the highest proton conductivity (46.23 mS cm−1) at 80°C. Incorporating PVDF into high DS of sPEEK enhanced the mechanical properties which can be used as a proton-conducting membrane for fuel cell that may improve the performance and prolong the lifetime of the cell.


Sign in / Sign up

Export Citation Format

Share Document