Date of Graduation
12-2014
Document Type
Dissertation
Degree Name
Doctor of Philosophy in Microelectronics-Photonics (PhD)
Degree Level
Graduate
Department
Microelectronics-Photonics
Advisor/Mentor
Zou, Min
Committee Member
Chen, Jingyi
Second Committee Member
Wang, Andrew
Third Committee Member
Roper, D. Keith
Fourth Committee Member
Vickers, Kenneth G.
Keywords
Coatings; Friction; Nanoparticle; Polymer; PTFE; Wear
Abstract
This dissertation presents an investigation into the effect of nanoparticle fillers and a polydopamine adhesive primer on the tribological performance of thin PTFE films. The principal objective of this investigation was to reduce wear in PTFE films, an issue which precludes the use of PTFE films in tribological applications requiring high durability. The friction and wear of the composite films were evaluated using a ball-on-flat configuration in linear reciprocating motion. It was found that the use of a polydopamine adhesive primer reduces the wear of PTFE films more than 600 times. X-ray photoelectron spectroscopy (XPS) results show that a tenacious layer of PTFE remains adhered to the polydopamine primer, which enables the durability of the polydopamine/PTFE film. Furthermore, the combination of a polydopamine primer, Cu nanoparticle fillers in the PTFE film, and optimal fabrication processes provided a collective effect that increased the wear life of PTFE films by more than 940 times. Because of the relatively low thickness of the film, it shows great potential for use in applications where durable, thin films are desirable.
Citation
Beckford, S. G. (2014). Wear Resistant Polydopamine/PTFE Nanoparticle Composite Coating for Dry Lubrication Applications. Graduate Theses and Dissertations Retrieved from https://scholarworks.uark.edu/etd/2002
Included in
Nanoscience and Nanotechnology Commons, Polymer and Organic Materials Commons, Tribology Commons