Journal
FRICTION
Volume 9, Issue 5, Pages 1110-1126Publisher
SPRINGER
DOI: 10.1007/s40544-020-0405-0
Keywords
fabric; polymer composites; synergistic effect; friction and wear
Categories
Funding
- National Natural Science Foundation of China [51675252, 51805516]
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The introduction of PDA/SiC/PEI functional coating and WS2, as well as AlN micro-fillers, improved the tribological performance of hybrid PTFE/glass fabric composites, mainly due to enhanced interfacial adhesion and synergistic effects between micro-fillers.
The high specific-strength of glass fibers and exceptional self-lubrication of polytetrafluoroethylene (PTFE) fibers promote the potential application of hybrid PTFE/glass fabric composites in the tribological field, but their weak interfacial adhesion and inferior thermal properties significantly inhibit their tribological performance and reliability. Herein, a hybrid of polydopamine/silicon carbide/polyethyleneimine (PDA/SiC/PEI) functional coating was co-deposited onto the hybrid PTFE/glass fabric surface through a one-step impregnation method, leading to increased surface roughness and abundant amine groups. Tensile and peeling tests showed that this functional coating offered 47.8% enhancement in the fabric/matrix interfacial adhesion without compromising the strength of the pristine fabric. Moreover, the additional incorporation of WS2, and aluminum nitride (AlN) micro-fillers contributed to the development of a high-quality tribofilm and improved the thermal properties of fabric composites. The results of wear tests proved that the hybrid-fabric composites, after the introduction of functional coating and micro-fillers, exhibited outstanding tribological performance, which was attributed to the superior interfacial adhesion as well as the synergistic enhancement effects between WS2 and AlN micro-fillers.
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