Mechanical properties of nano-SiO2 reinforced 3D glass fiber/epoxy composites

Abstract

Three dimensional (3D) glass fiber epoxy composites reinforced with nano-SiO2 particles at ratios of 0.5 wt.%, 1 wt.%, 2 wt.% and 3 wt.%, were manufactured using the vacuum infusion method to improve the mechanical properties. Differential scanning calorimetry, thermo-gravimetric analysis, particle dispersion detection by color measurement, scanning electron microscopy, energy dispersive X-ray spectroscopy mapping, three point bending and tensile testing were performed to characterize the nano-particle-reinforced 3D composites. Mapping and color measurement revealed good dispersion of the nano-particles. The mechanical tests showed improvement rates of 52 % and 64 % respectively on warp and weft directions compared with the non-reinforced 3D composite. The tensile strength of the nano-SiO2 reinforced 3D woven composites also increased to 6 % and 10 % according to the warp and weft directions compared with the non-reinforced 3D composite.

Improved mechanical performance of three-dimensional woven glass/epoxy spacer composites with carbon nanotubes

“…42,[50][51][52][53] It can be said that the multiwall tubular morphology and high specific surface area of the MWCNTs increase the contact areas and help the good adhesion formation between the reinforcement material and resin. 34 In addition, the increase in the bending modulus was another evidence of improved load distribution mechanism by good dispersion of MWCNT in the epoxy resin. The obtained ratios of increase for warp and weft directions were calculated as 80 and 85% compared to the neat epoxy 3D woven composite, respectively.…”

“…According to the previous studies, the nano reinforcement/ matrix ratio has an important role on the strength properties of composite materials. 34,49 Composite materials have a threshold value of this ratio. Maximum strength properties are obtained at certain proportional values, which can also be referred to as the saturation point.…”

“…The edges of specimens were filled with liquid plastic paste, with a syringe injection and solidified. 34 The liquid plastic paste is a material that becomes solid while it is liquid during application purchased from Permolit Paint Inc. The tensile tests were performed at a drawing speed of 0.5 mm min À1 according to the ASTM D-3039 standard using a ZwickRoell Z100 testing machine at ambient temperature.…”

“…While there are so many studies that particle reinforcement improves properties, it is remarkable that the studies on the effects of nanoparticles on the structural behavior of 3D composites are limited. In the study, which focused reinforcement of 3D woven spacer composite with nanoparticles, Yildirim et al 34 , nano-SiO 2 was incorporated to the 3D woven composite and they declared that tensile and bending mechanical properties and thermal properties were improved. Effects of CNT particles on 3D woven composites should be examined in-depth.…”

Fabrication and mechanical properties of TiO2 polymer‐matrix nanocomposite and its 3D woven composite

“…During the past years, Bilisik et al [48][49][50][51][52][53][54][55] claimed the improvement of the properties such as tensile strength, low-velocity impact, compressive strength after impact, shear strength, flexural strength, and fracture toughness on account to the introduction of nanostitched 3D composites. However, to the best of author's knowledge, only a few literatures [56,57] related to 3D woven composites with nanoparticles dispersed in epoxy matrix can be attended.…”