The influence of incorporation of silica and carbon nanoparticles on the mechanical properties of hybrid glass fiber reinforced epoxy

Abstract

Recently, the study of hybrid nanocomposites has attracted much attention because they are highly expected for being used in many applications. In this context, there is an insisting need to investigate the effect of incorporation of silica and carbon particulates nanofillers into epoxy reinforced with woven and nonwoven tissue glass fiber. The influence of incorporation of silica (SiO2) and carbon black nanoparticles (C) with different weight fractions on the tensile properties, impact strength and fatigue performance of epoxy matrix reinforced with two types of E-glass fiber was investigated. The results showed an improvement in tensile properties, impact strength and fatigue life with addition of almost all nanoparticles contents considerably with respect to that of the neat glass fiber reinforced epoxy composites (NGFRE). Hybrid composites filled with 0.5 wt.% C exhibited the highest tensile strength and fatigue performance with an enhancement of 19% and 60% compared to NGFRE, respectively. An increase of 57% and 28% in tensile modulus and impact strength over NGFRE was obtained respectively with hybrid composites filled with 1 wt.% C. Adding 0.25 wt.% SiO2 and 0.25 wt.% C simultaneously showed an improvement in mechanical properties. SEM images of tensile and impact fracture surfaces are presented for CS 0.5 specimens which in turn reveal weak fiber/matrix interface.

The effect of incorporation of hybrid silica and cobalt ferrite nanofillers on the mechanical characteristics of glass fiber‐reinforced polymeric composites

“…This results in enhancing the interfacial adhesion and flexural properties of epoxy filled with nanofillers laminates. [ 20 ]…”

“…Incorporation of 0.5 wt% of both nanofillers considerably improved the tensile behavior. Megahed et al [ 20 ] studied the influence of the addition of SiO 2 and black carbon nanoparticles into epoxy reinforced with nonwoven tissue and woven E‐glass fabric. Compared to the pristine glass fiber/epoxy composite, the incorporation of 0.25 wt% of nano‐silica and 0.25 wt% of carbon simultaneously indicated an enhancement in the mechanical properties.…”

“…[ 24,25 ] Many researchers have recommended the inclusion of nanofillers such as SiO 2 owing to its low cost, the low‐viscosity processing, the possibility of better dispersion, and capability of improving the mechanical properties of polymer composites. [ 20,21,26–28 ] The reduction in transition temperature with nano‐sized SiO 2 loading to the catalyzed reaction of epoxy matrix with surface hydroxyl groups lead to the formation of an amine rich shell around the SiO 2 nanoparticle and subsequent shifting of the epoxy/amine stoichiometry to make higher cross‐linking of the epoxy matrix. [ 29 ] SiO 2 nanoparticles are considered as effective reinforcing agents for hard polymers.…”

Synthesis of developed rice straw sheets and glass fiber-reinforced polyester composites

“…The impact strength was calculated by dividing the obtained absorbed energy by the cross sectional area of the specimen. 27,28…”

“…The impact strength was calculated by dividing the obtained absorbed energy by the cross sectional area of the specimen. 27,28 Shear test. The in-plane shear strength (IPSS) of the hybrid natural/synthetic composites was carried out according to ASTM D3846.…”