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The aim of this study is to prepare epoxy/polytetrafluoroethylene (PTFE)/glass fiber (GF) composites (EPGs) with the unique characteristics of low friction and high wear resistance based on triglycidyl isocyanurate (TGIC). The tribological properties of composites with different filler ratios under different working conditions were systematically studied. At the maximum filler content of 40 wt% PTFE, the minimum coefficient of friction (COF) and wear rate reached 0.079 and 0.45 - 10°6 mm³/N-m. The hardness decreased by 44.2% and the density increased by 18.3%. The worn surfaces and transfer films were observed and analyzed by scanning electron microscopy (SEM) and x-ray photoelectron spectroscopy (XPS). The increasing tendency of velocity and amplitude is beneficial to reduce the carbon-rich region and further enhance the formation of transfer films. It is proved that the tribological properties of TGIC-based epoxy composites are higher than those of other types of epoxy composites. This study offers great insight into the tribological applications of TGIC-based epoxy composites. Highlights • Epoxy/PTFE/GF composites (EPGs) were prepared using TGIC as the base material. • EPGs have good mechanical and tribological properties. • The COF of EPG3 reaches 0.079 and the wear rate becomes 0.45 x 10°6 mm3/(N-m). • The increasing tendency of velocity and amplitude is beneficial to reduce the carbon-rich region and further enhance the formation of transfer films. [ABSTRACT FROM AUTHOR]

A novel atmospheric pressure plasma microjet (APPμJ) array is proposed to realize maskless parallel micropatterned etching of materials. Due to applying microfabrication technology, the dimension and distance of multiple jets in an array can be adjusted at a micro/nanoscale. However, interactions among multiple jets often lead to inconsistency of microjets and nonuniformity of sample etching. In this study, a 1 × 2 APPμJ array with 90-μm nozzles and varying jet-to-jet distance is developed. The effects of different operating factors on the consistency of the APPμJ array are investigated. The experiment results show that the consistency of the microjet array and uniformity of sample etching can be greatly improved by optimizing operating parameters, such as applied voltage, gas flow rate, and jet-to-jet distance. [ABSTRACT FROM AUTHOR]