Preparation and Tribological Properties of Modified MoS2/SiC/Epoxy Composites

Abstract

In order to improve the tribological properties of epoxy (EP), EP composites were prepared by filling different proportions of silicon carbide (SiC) particles and molybdenum disulfide (MoS2) powder. SiC and MoS2 particle surfaces were modified by the silane coupling agent KH560 to improve dispersion and avoid agglomeration of the inorganic particles in the EP resin matrix. The effect of different proportions of modified MoS2 content on the tribological properties of SiC/EP composites, and the wear mechanism of the worn surface, were investigated when the filler content was fixed at 55 wt.%. The results indicate that the friction and wear properties of modified MoS2/SiC/EP composites are better than SiC/EP composites without modified MoS2. When the modified MoS2 content is 4 wt.%, the average friction coefficient and volume wear rate of the modified MoS2/SiC/EP composite are 0.447 and 14.39 × 10−5 mm3/N·m, respectively, which is reduced by 10.06% and 52.13% in comparison with that of the 55 wt.% SiC/EP composite. Furthermore, the average friction coefficient of a composite containing 4 wt.% MoS2 is 16.14% lower, and the volume wear rate is 92.84% lower than that of pure EP.

Effect of core–shell structured SiO2@MoS2 on the tribological properties of epoxy resin/carboxyl terminated butadiene acrylonitrile composites

“…It has been found out that released particle fillers in sliding interface contributed to the formation of transfer films on the counter steel surface. [37][38][39] To identify this role, the chemical composition of transfer films formed during the sliding of 6CSs/EPC15 composite against steel was characterized by using XPS (Figure 11). The peaks at 284.8 and 288.5 eV in the C1s spectrum can be ascribed to C atoms in C C and C O, respectively (Figure 11A).…”

A mucus-inspired solvent-free carbon dot-based nanofluid triggers significant tribological synergy for sulfonated h-BN reinforced epoxy composites

“…[1][2][3][4][5][6] Recently, to increase the energy efficiency and reduce emission, polymer-based composites with long-term durability against friction and wear are urgently needed. [7][8][9] These required performances can be improved by mixing polymer-based composites with two-dimensional (2D) nanomaterials which have low inter-layer shear strength, excellent lubricity and high thermal conductivity. 10,11 As commonly used 2D materials, hexagonal boron nitride (h-BN) nano-sheets are composed of 2D layers of alternating boron and nitrogen atoms.…”

Identification of mechanical properties of an araldite LY556 blended with DNR composite and polyacetal: A comparative study for sustainable future

“…But the surface developed in all the above cases is rough. This can however be smoothened by adding KH500 material (Liu et al, 2021b). In the circumstances discussed, only a particular property of the material at a time is improved.…”