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Hui Chai,Waheed Ur Rehman,Xuyun Yang,Tao Meng,Renyang He 한국섬유공학회 2022 Fibers and polymers Vol.23 No.10
To improve the wear resistance of friction components coated with epoxy resin, a titanium-multi-walled carbonnanotubes (Ti-MWCNT) reinforced epoxy resin composite coating was designed and prepared by combining metalnanoparticles and inorganic nanoparticles into a hybrid filler using Ti nanoparticles and MWCNT as raw materials. Thechanges in functional groups of pure resin and Ti-MWCNT reinforced epoxy resin composites were analyzed using infraredspectroscopy. The hardness, fracture toughness and tribological properties of pure resin and Ti-MWCNT-reinforced epoxyresin composite coatings with different contents of Ti-MWCNT filler (0, 2 wt.%, 4 wt.%, 6 wt.%, 8 wt.%) were determinedexperimentally. The fracture and wear mechanisms of Ti-MWCNT-reinforced epoxy resin composites were also revealedwith the aid of scanning electron microscopy. The results showed that the bonding form of Ti-MWCNT hybrid filler andepoxy resin was physical bonding. The addition of appropriate amount of Ti-MWCNT hybrid filler effectively improved thehardness, fracture toughness and tribological properties of epoxy resin. When 6 wt.% Ti-MWCNT hybrid filler was added,the optimum composite was obtained with hardness and fracture toughness of 676 HL and 0.922 MPa·m1/2, and frictioncoefficient and wear rate of 0.347 and 4.71×10-13 m3(N·m)-1, respectively. However, the performance of the compositecoating gradually decreased when the filler content was increased to 8 wt.%. In summary, the addition of appropriate amountof Ti-MWCNT hybrid filler can effectively improve the hardness, fracture toughness and tribological properties of epoxyresin. Ti nanoparticles react chemically with oxygen and effectively fill the microcracks generated in the resin matrix. TheMWCNT filler limits the movement of the surrounding resin matrix due to the difference in size and prolongs the diffusionpath of the microcracks in the resin matrix. The interaction between the two filler components significantly improves theperformance of the composite coating.
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