Coupling hybrid of graphene oxide and layered zirconium phosphonate to enhance phenolic resin–based friction materials

Abstract

A two-dimensional (2D) heterogeneous coupling nanoparticle composed of graphene oxide and zirconium phosphonate (GO-ZrP) was synthesized layer by layer in a self-assembly manner. A rigid layer of zirconium phosphonate can inhibit the curling of graphene oxide and then improve its dispersion. The GO-ZrP was then applied to phenolic resin-based friction materials by blending and hot pressing to improve their friction properties. The results show that the phenolic resin-based friction materials modified by GO-ZrP possess excellent tribological, mechanical, and thermal properties. Also, the specific wear rate of the material decreased nearly fivefold with the optimal loading, while the friction coefficient was basically stable. Synergistic effects between GO and ZrP nanosheets provide good prospects for the application of 2D nanofillers in friction materials. V C 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46543.

Graphene as a nanofiller for enhancing the tribological properties and thermal conductivity of base grease

“…[21][22][23] The relevant interpretation and wear mechanisms of graphene have been studied and the relevant published work can be used for ref. [24][25][26][27]. Thus, we studied the performance of grease in terms of both the tribological properties and the thermal conductivity.…”

Enhanced tribological performance of epoxy nanocomposites by the hybridization of 2D nano‐WS2 and graphene oxide nanosheets

“…[ 20 ] Deng's team synthesized 2D heterogeneous coupling nanoparticles composing of GO and zirconium phosphonate to lower the specific wear rate of phenolic resin nearly fivefold (Test at 0.33 m/s sliding speed, a load of 20 N and ambient temperature). [ 21 ] GO was considered as an excellent template to reduce the nano‐sized WS 2 aggregation degree due to the abundant functional groups on the surface of GO. [ 13 ] As a result, it would be expected that introducing the 2D WS 2 coated GO into epoxy resins might likely lead to enhanced tribological performance but relevant work has not been reported yet.…”

Improved tribological and noise suppression performance of graphene/nitrile butadiene rubber composites via the exfoliation effect of ionic liquid on graphene

“…Graphene (Gr), an allotrope of carbon consisting of a single layer of sp 2 bonded carbon atoms, has become the most potential material to achieve tribological promotion of the polymer-based friction pairs. [23,24] Apart from the high Young's modulus (1 TPa) and high fracture strength (125 GPa) which can significantly increase the modulus of the matrix and avoid deformations, Gr can also play a role of lubricant due to the innate graphitic layers. [25,26] Nevertheless, due to the strong intermolecular forces, Gr is extremely keen to aggregate, becoming the predominant obstacle to the large-scale application of Gr.…”