Performance evaluation of composite gears composed of POM, CNTs, and PTFE

The main focus of this work is to enhance the load bearing capacity and life of the polyoxymethylene (POM) gears. For this purpose, composites with varying weight fractions of silane treated carbon nanotubes (CNTs), lubricating additive polytetrafluoroethylene (PTFE) and synergistic combination of b...

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Bibliographic Details
Published in:Polymer composites 2021-03, Vol.42 (3), p.1123-1134
Main Authors: Goriparthi, Bhanu K, Naveen, Pasala, Ravi Sankar, Hota
Format: Article
Language:English
Subjects:
Bearing capacity
Carbon nanotubes
Composite materials
functionalized CNTs
Injection molding
Knitwear
nanocomposite gears
Performance evaluation
Polytetrafluoroethylene
POM
power absorption gear test rig
PTFE
Spur gears
Tensile properties
Twin screw extruders
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Summary:The main focus of this work is to enhance the load bearing capacity and life of the polyoxymethylene (POM) gears. For this purpose, composites with varying weight fractions of silane treated carbon nanotubes (CNTs), lubricating additive polytetrafluoroethylene (PTFE) and synergistic combination of both CNTs and PTFE were fabricated by melt compounding using twin screw extruder followed by injection molding. Tensile properties and wear behavior of the developed composites are evaluated. Further, test spur gears were fabricated with the developed composites and their performance is evaluated using power absorption type gear test rig at different torques and rotational speeds. Composite gears with 1 wt% silanized CNTs and composite gears with 10 wt% PTFE and 1 wt% silanized CNTs exhibited better performance at all the applied toques and rotational speeds.
ISSN:0272-8397
1548-0569
DOI:10.1002/pc.25887