High mechanical and tribological performance of polyimide nanocomposite reinforced by fluorinated graphene oxide

Abstract

Novel polyimide/fluorinated graphene oxide (PI/FGO) nanocomposites with outstanding mechanical, thermal, and tribological properties were obtained using FGO nanosheets which were successfully fabricated by simple hydrothermal reaction. FGO exhibited distinguished interface adhesion with PI matrix due to covalent bonds, resulting improved mechanical and wear resistance of PI/FGO nanocomposites. Wherein, PI/FGO‐0.5 nanocomposite demonstrated conspicuous tribological performance accompanied with 33.1% decrease of friction coefficient and 80.8% reduction of wear rate compared with pure PI under dry friction. Notably, PI/FGO nanocomposites manifested better wear resistance under seawater than that under dry friction, illustrating its great potentiality as high wear‐resistant material suitable for ocean environment.

High Performance Polymer Composites: A Role of Transfer Films in Ensuring Tribological Properties—A Review

“…Also, it reduced the CoF values and improved wear resistance (PI; B-o-D; the counterpart is the GCr15 steel ball with a diameter of 3 mm; R a = n/d; frequency = 5 Hz; P = 10 N; t = 30 min; DSF, SLF). Min, C., et al designed the ‘PI + 0.5 wt.% FGO’ nanocomposite [ 56 ]. Due to covalent bonds, the great FGO to PI interfacial adhesion increased their mechanical strength and wear resistance.…”

Influence of fluorinated graphene-modified epoxy coatings on the corrosion behaviour of 2024 aluminium alloy

“…Wherein, the addition of FG signicantly enhanced the lubrication performance of pure PI, and its friction coefficient and wear rate were reduced by 33.1% and 80.8%, respectively. 44 These ndings indicate that FG is an potential material in the coating eld. However, the formation process of FG leads to a change in the hybrid orbital of graphene from sp 2 to sp 3 , which might be causing FG with different microstructure under different uorine contents.…”

Water lubrication of graphene oxide-based materials

“…The strong adherence of GO to the PEEK resulted in an in situ-formed GO coating and prevented scratching from the steel counterpart. Min et al [114] reported a novel fluorinated GO/polyimide (FGO/PI) nanocomposite via simple hydrothermal reactions (Fig. 10).…”