Ultra‐high compression and wear resistant hybrid filled polyimide composite: Synergistic effect of Fe₂O₃ decorated RGO

Abstract

Herein, the tribological performance, thermal and compression resistance behavior of polyimide (PI) reinforced by Fe2O3 decorated reduced graphene is systematically investigated. The remarkable synergistic effect of Fe2O3 decorated reduced graphene oxide (RGO) is demonstrated in its PI wear resistance, and PI/RGO/Fe2O3 composites show good thermal stability and much higher compression resistant ability than PI, PI/RGO, and PI/Fe2O3 composites when the filling contents are same. Additionally, the PI/RGO/Fe2O3 composites also exhibited ultra‐wear‐resistant properties under high load condition, and the lowest wear rate is 3.18 × 10−8 mm3N−1 m−1, which is an order of magnitude lower than that of pure PI. The investigation of its tribological mechanism also showed strong synergistic effect and interface force of Fe2O3 decorated RGO, which contribute to its high‐performance friction‐reducing behaviors. These findings give an inside view to Fe2O3 decorated RGO and its polyimide composites, and open an avenue for the graphene oxide (GO) based composite to act as compression wear‐resisting solid fillers and lubricants when polymer composite with excellent compressive, thermal and tribological properties is required.

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

“…The obtained excellent mechanical and tribological properties were attributed to the structure of the composites and chemical bonds between RGO and TiO 2 , which were assumed to prevent the crack propagation under friction conditions and cause the WR reduction, according to Figure 14 (PI; B-o-R; counterpart is a steel; R a = 0.3–0.5 μm; RT; V = 42 cm/s, P = 100–300 N) . Liu, H., et al studied the influence of reduced graphene oxide (RGO) particles decorated with Fe 2 O 3 ones [ 92 ]. Their incorporation in the PI matrix greatly enhanced the antiwear ability of the polymer films.…”

Surface Modification of Nano-Al2O3 with Silane Coupling Agent and Its Effect on the Compressive Strength of PI/Al2O3 Composites

“…The strength of composites with a suitable content of nanoparticles was h that of pure PI matrix. For instance, Liu et al [38] found that the PI/reduced oxide (RGO)/Fe2O3 composites showed a compressive strength of 130.97 MP 35.9% higher than pure PI. Zhao et al [39] fabricated PI/nano-SiO2 composite The strength of composites with a suitable content of nanoparticles was higher than that of pure PI matrix.…”

“…Zhao et al [39] fabricated PI/nano-SiO2 composite The strength of composites with a suitable content of nanoparticles was higher than that of pure PI matrix. For instance, Liu et al [38] found that the PI/reduced graphene oxide (RGO)/Fe 2 O 3 composites showed a compressive strength of 130.97 MPa and was 35.9% higher than pure PI. Zhao et al [39] fabricated PI/nano-SiO 2 composites via an in situ polymerization method, in which the compressive strength of the composite with 5 wt.% nano-SiO 2 was 125.51 MPa, which increased by 42.6% compared to the pure PI with a compressive strength of 88.02 MPa.…”

A review on recent advances on improving polyimide matrix nanocomposites for mechanical, thermal, and tribological applications: Challenges and recommendations for future improvement

“…Analysing the tribological aspect, results showed that 0.5 wt% GMS loading resulted in a 25% reduction in the coefficient of friction and 64% reduction in the wear rate. Liu et al 103 examined the effects of Fe 2 O 3 decorated reduced graphene oxide (RGO) on the tribological performance, thermal, and compression resistance behaviour of PI matrix. It was reported that the RGO/Fe 2 O 3 /PI composite, which was prepared by in situ polymerization exhibited better thermal stability and much higher compression resistance in comparison with pure PI.…”