Synergetic Effects of Mechanical Properties on Graphene Nanoplatelet and Multiwalled Carbon Nanotube Hybrids Reinforced Epoxy/Carbon Fiber Composites

Abstract

Graphene nanoplatelets (GNPs) and carbon nanotubes (CNTs) are novel nanofillers possessing attractive characteristics, including robust compatibility with most polymers, high absolute strength, and cost effectiveness. In this study, an outstanding synergetic effect on the grapheme nanoplatelets (GNPs) and multiwalled carbon nanotubes (CNTs) hybrids were used to reinforce epoxy composite and epoxy/carbon fiber composite laminates to enhance their mechanical properties. The mechanical properties of CNTs/GNPs hybrids on a fixed weight fraction (1 wt%) with mixing different ratio reinforced epoxy nanocomposite, such as ultimate tensile strength and flexure properties, were investigated. The mechanical properties of epoxy/carbon fiber composite laminates containing different proportions of CNTs/GNPs hybrids (0.5, 1.0, 1.5 wt%) were increased over that of neat laminates. Consequently, significant improvement in the mechanical properties was attained for these epoxy resin composites and carbon fiber-reinforced epoxy composite laminates.

A nano-sandwich construct built with graphene nanosheets and carbon nanotubes enhances mechanical properties of hydroxyapatite–polyetheretherketone scaffolds

“…46,47 The long tubular CNTs penetrated the GNSs and formed the sandwich construct ( Figure 6F), which could inhibit the aggregation of CNTs and the stacking of graphene layers, thus improving the stress transfer between the reinforcements and matrix. The similar enhancing mechanisms have been reported by Wang et al 48 and Agrawal et al 49 A common character of scaffolds for bone tissue engineering application is their ability to bond to living bone through the formation of apatite layer on their surface. Surface morphologies and chemical compositions of the S1, S2, S3, S4, S5, and S6 scaffolds after soaking in SBF for 7 days were characterized by SEM and EDS, respectively, as shown in Figure 7.…”

Synergistic Effects of Graphene/Carbon Nanotubes Hybrid Coating on the Interfacial and Mechanical Properties of Fiber Composites

“…The interfacial adhesion, mechanical properties and electrical properties of GnPs modified CF/epoxy composites were improved. However, GnPs presents the dispersion problem as well as CNTs, because the large surface area of GnPs causes in strong van der Waals forces and π-π inter-planer stacking [32]. Consequently, the GnPs and CNTs are unevenly deposited on CF surface, so that the properties of GnPs and CNTs coated CFRP composites reduce significantly compared with non-coated CFRP composites [33,34].…”

Improving the fracture toughness properties of epoxy using graphene nanoplatelets at low filler content

“…23 Epoxy resins are also extensively employed as engineering adhesives and matrices for fiber-reinforced plastics (FRP) due Improving the fracture toughness properties of epoxy using graphene nanoplatelets at low filler content and Toby Sainsbury to their highly beneficial properties such as high adhesion strength and good processability. By reacting the epoxy resin with a suitable curative, three-dimensional cross-linked thermoset structures are obtained, 24,25 which results in a material with excellent mechanical and thermal properties, [26][27][28] including high modulus, high failure strength, and improved interfacial bonding for many industrial applications. 29,30 Despite the numerous advantages of epoxy such as excellent mechanical properties and thermal stability, epoxies are fundamentally brittle due to their high cross-link density.…”