Functionalization of multi-wall carbon nanotubes to reduce the coefficient of the friction and improve the wear resistance of multi-wall carbon nanotube/epoxy composites

Study of the effect of amino-functionalized multiwall carbon nanotubes on dry sliding wear resistance properties of carbon fiber reinforced thermoset polymers

“…This result, together with the fact that the behavior of both material configurations at a sliding distance of 10,000 m is similar in mass loss and specific wear rate (due to the high influence of the surface resin layer), is used to deduce that the role of the transfer film at this stage is not altered by the amount of MWCNTs contained in the nFRC debris. In this case, the improvement on the wear resistance reported in [26] for epoxy resin with a similar amount of amino-functionalized MWCNTs, but for different loading conditions, were not reproduced. Nevertheless, reducing specific wear rate for nFRC at higher sliding distances is associated with the CNTs influence on matrix/fiber interface, helping to reduce interfacial debonding and keep the broken fiber in the composite surface due to mechanical interlocking of CNTs with matrix, chemical bonding between CNTs and bulk materials and local stiffening of polymer matrix near fiber/matrix.…”

“…Friederich and Schlarb [25] indicated the relevance of the mixing method and the carbon nanotube treatment and its content on the wear resistance of epoxy resin with MWCNTs, with 1.0 wt.% being the optimal loading of MWCNTs to achieve the minimum specific wear rate. Cui et al [26] demonstrated that the addition of MWCNTs to epoxy is an efficient method to improve the wear resistance and to lower the friction coefficient; they demonstrated that a 0.5-wt.% amino-functionalized MWCNT composite achieves a reduction of 41.3 % on the wear rate compared to neat epoxy.…”

Structural and elastic properties and stability characteristics of oxygenated carbon nanotubes under physical adsorption of polymers

“…Moreover, it was revealed that the functionalization of CNTs by suitable physical adsorption of polymers can considerably improve the mechanical properties and load transfer issues in nanocomposites made of CNTs [50][51][52][53].…”

Assembling of carbon nanotubes film responding to significant reduction wear and friction on steel surface

“…As lubricious materials, carbon nanotubes, discovered by Iijima (1991), is a potentially lubricious material. So far, tribological applications of CNTs include lubrication film, additive and filler (Loyd et al 2011;Cui et al 2013a;Schaber et al 2015;Chen et al 2005). Kis et al (2006) reported that multiwall carbon nanotubes shown ultralow friction between nanotube shells.…”

“…But very recently, Westover et al (2016) reported that vertically aligned carbon nanotubes shown variation friction coefficients due to the restructuring. By the way, many recent studies have focused on carbon nanotubes' modified kinds of antifriction and antiwear materials and have benefits for reduction friction and wear (Li et al 2016;Cui et al 2013b;Liu et al 2017). In one word, carbon nonotubes shown superlubcity might be using nanoscale mechanics but are more complicated in mocroscale related on state of itself.…”