Influence of the modification with MWCNT on the interlaminar fracture properties of long carbon fiber composites

Toughness, flexural, damping and interfacial properties of hybridized GFRE composites with MWCNTs

“…These inclusions act as stress amplifiers, which are quickly cut through the material, and ending its life prematurely [7]. Many researches have been undertaken with the purpose of improving toughness of epoxy polymers by adding different nanofillers [8][9][10][11][12][13]. Toughening engineering polymers has received much attention because it generally does not lead to a dramatic decrease in other desired mechanical properties compared to metallic materials.…”

Interlaminar Fracture Toughness of CFRP Laminates Incorporating Multi-Walled Carbon Nanotubes

“…For instance, Mujika et al investigated the effect on interlaminar fracture toughness of twelve-ply unidirectional CFRP composites incorporating carboxylic and alcohol functionalized MWCNTs and non-functionalized MWCNTs. While the non-functionalized MWCNTs did not have an effect on the fracture toughness, the addition of 0.1 wt% functionalized MWCNTs showed a 22% increase in initiation fracture toughness and a 14% increase in propagation fracture toughness [28]. Previous research by the authors showed that the 1.0 wt% functionalized carboxyl multi-walled carbon nanotubes (COOH-MWCNTs) out-performed similar content of pristine MWCNTs in regard to the four-point flexural strength of epoxy nanocomposites and the in-plane shear strength of woven fabric composite coupons by 43% and 20%, respectively [20].…”

Hybrid polymer composites for high strain rate applications

“…Among several different nanoparticles used in modification of epoxy for structural applications, carbon nanotubes (CNTs) have attracted more attention due to their extraordinary properties including high aspect ratio, low weight, exceptional strength and stiffness, high flexibility and elongation at break, and high thermal and electrical conductivity G omez-del Río et al, 2014;Hu et al, 2013;Mujika et al, 2012). Among several different nanoparticles used in modification of epoxy for structural applications, carbon nanotubes (CNTs) have attracted more attention due to their extraordinary properties including high aspect ratio, low weight, exceptional strength and stiffness, high flexibility and elongation at break, and high thermal and electrical conductivity G omez-del Río et al, 2014;Hu et al, 2013;Mujika et al, 2012).…”

“…The modulus and the compressive strength of the nanocomposites are higher in both cases while the ultimate strain is reduced compared with the neat glass fibre/epoxy (Cao et al, 2007). The functionalization of MWCNTs improves their dispersion in the solvent and enhances their adhesion to epoxy (Mujika et al, 2012). Although most of the research has been focussing on the addition of nanoparticles to GFRP, CFRP has also been modified with nanoparticles.…”