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Materials for Additive Manufacturing
Published in Yashvir Singh, Nishant K. Singh, Mangey Ram, Advanced Manufacturing Processes, 2023
M. Anugrahaprada, Pawan Sharma
The thermoplastic polymer, polyether ether ketone or PEEK, is a semicrystalline polymer that has outstanding mechanical, thermal and chemical properties. It is stable at high temperatures and has good chemical stability. Rinaldi et al. surveyed PEEK usage for space applications as a structural material, and successfully 3D printed a nanosat structure using FDM. Following a comprehensive mechanical and thermal analysis of the printed component, they concluded that PEEK has the potential to be used for space applications [57].
Potential and Challenges of High-Performance Plastic Gears
Published in Stephen P. Radzevich, Dudley's Handbook of Practical Gear Design and Manufacture, 2021
C. M. Illenberger, T. Tobie, K. Stahl
Polyetheretherketone (PEEK) is a high-performance plastic that is particularly suitable for use at higher temperatures and higher power levels. Investigations on the tooth root load carrying capacity [14] indicate a comparatively high tooth root strength. However, pitting damages occur with regard to the tooth flank load carrying capacity. The calculation approach for determining the tooth flank carrying capacity of plastic gears according to VDI 2736 [5] is shown in equations (13.6) to (13.8). The calculation approach is based on the assumption that the maximum flank pressure is present in the area of single tooth contact.
Tribological Behavior of PTFE Composites Filled with PEEK and Nano-Al2O3
Published in Tribology Transactions, 2018
Qi Yuan, Gong Jun, Cao Wenhan, Wang Honggang, Ren Junfang, Gao Gui
Polyetheretherketone (PEEK) is a semicrystalline polymer that is applied widely to impart components with high strength, wear resistance, creep resistance, operating temperature resistance, and low thermal conductivity. Bijwe, et al. (36) and Burris and Sawyer (37) investigated the effects of PEEK particles on the tribological properties of PTFE composites and found that PEEK particles could significantly improve the tribological performance. Onodera, et al. (38), (39) found that the PEEK contents in the polymer blend preferentially transferred to the counterpart metal surface prior to PTFE addition and prevented detachment of the transfer film. Nanoparticles have a much higher specific surface area, hardness, and modulus than polymers and can enhance the wear resistance, mechanical properties, and load-carrying capacity of the PTFE composites. In contrast, the required content of nanoparticles in composites is much lower (<10%) than that required using traditional fillers. The low additive content enables the composite to retain the intrinsic merits of the unfilled polymers, such as their low weight and friction coefficient, ductility, and good processability.
Vacuum-UV of polyetheretherketone (PEEK) as a surface pre-treatment for structural adhesive bonding
Published in The Journal of Adhesion, 2020
Elisa Arikan, Jens Holtmannspötter, Timo Hofmann, Hans-Joachim Gudladt
Polyetheretherketone (PEEK) is a high performance thermoplastic with outstanding thermal and mechanical properties. PEEK has a glass transmission temperature of about 145°C and a melting point of about 335°C. The yield strength is about 90 MPa, with an elongation at break of 120–170%. The chemical structure of PEEK is shown in Figure 1.