Fabrication and characterization of functionally graded nanoclay/glass fiber/epoxy hybrid nanocomposite laminates

Megahed, A. A.; Megahed, M.

doi:10.1007/s13726-017-0552-y

Cited by 37 publications

(30 citation statements)

References 23 publications

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“…It is confirmed that the good dispersion of aluminum nanoparticles inside the GFRE is imperative for attaining higher improvement levels. The uniform dispersion of nanoparticles in the polymer matrix is a vital prerequisite for desirable mechanical and physical characteristics [7]. Uniform dispersion ensures more surface area of nanoparticles into the matrix.…”

Section: Resultsmentioning

confidence: 99%

“…However, it must be kept as short as possible to overcome the degradation of resin [34]. To prevent resin degradation, pauses were extended until the mixture of epoxy and micro/nanoparticle was cooled by placing on an ice water bath before operating sonication [7]. Subsequently, hardener was carefully added manually to the mixture and mixed thoroughly with a ratio of 1:2 by weight of epoxy resin.…”

Section: Methodsmentioning

confidence: 99%

“…The impact test was performed with a 0.5 J sledge. Impact strength was obtained by dividing the absorbed energy with the original cross-sectional area of the specimen [7].…”

Section: Impact Testmentioning

confidence: 99%

“…Inclusions of fillers to a polymer matrix are used as a means of enhancing the mechanical properties and wear resistance of polymers [5]. Some researchers have attempted to enhance the toughness of such polymers by reinforcing with fillers to promote extrinsic toughening mechanisms [1,[6][7][8][9]. Recently, micro/nanofiller reinforced polymer matrices composites have gained extensive research interest, commonly due to their extreme high strength-to-weight and stiffness-to-weight ratios.…”

Section: Introductionmentioning

confidence: 99%

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Mechanical Performance of glass/epoxy composites enhanced by micro- and nanosized aluminum particles

Megahed

Fathy

Morsy

et al. 2019

Journal of Industrial Textiles

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In this article, the effects of using nanometer and micrometer-sized aluminum particles in glass fiber reinforcement epoxy composites have been studied. The study evaluates the mechanical properties improvement with the addition of nanometer and micrometer-sized aluminum particles to glass fiber reinforcement epoxy composites. The combination of aluminum and woven glass fibers provide high potential for the modification of the epoxy matrix. The composites were produced by hand lay-up technique. The glass fiber volume fraction was kept constant at 35%, while the contents of aluminum particles were increased from 0.2 to 4 wt%. The developed composites showed enhanced tensile, flexural, hardness, wear, and impact behavior as compared to glass fiber reinforcement epoxy. An enhancement of 27% was attained in tensile strength with glass fiber reinforcement epoxy filled with 2 wt% aluminum nanoparticles; however, adding 4 wt% nanometer-sized aluminum particles showed an improvement of 114%, 116%, 21%, 52.2%, 21.4%, 76.6% in tensile elongation, toughness, tensile modulus, flexural strength, flexural strain, flexural modulus, respectively as compared to neat glass fiber reinforcement epoxy. Increasing the nanometer-sized aluminum particles in glass fiber reinforcement epoxy composites to 4 wt% reversed the improvement trend in tensile strengths, wear, and hardness. However, increasing the micrometer-sized aluminum particles to 4 wt% has shown fair improvement in all used aluminum loadings. Microscopy results showed that the aluminum particles were well dispersed in the epoxy matrix. However, a higher weight fraction of nano-aluminum in the epoxy had promoted little agglomerations.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

“…The impact test was performed with a 0.5 J sledge. Impact strength was obtained by dividing the absorbed energy with the original cross-sectional area of the specimen [7].…”

Section: Impact Testmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Mechanical Performance of glass/epoxy composites enhanced by micro- and nanosized aluminum particles

Megahed

Fathy

Morsy

et al. 2019

Journal of Industrial Textiles

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“…Also combining both types of nanoparticles can cause bad dispersion of nanoparticle, more gas bubbles and excessive stress concentration points may be formed into the composites [5]. The uniform dispersion of nanofillers in the polymer matrix is an important prerequisite for desirable mechanical and physical characteristics [30,31]. Uniform dispersion ensures more surface area of nanoparticles into the matrix.…”

Section: Tensile Behaviormentioning

confidence: 99%

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

Megahed

Agwa

2018

Journal of Industrial Textiles

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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.

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Research on mechanical and erosion behavior of stepped polymeric functionally graded materials reinforced with aluminum

Boggarapu

Adapa

et al. 2021

Polymer Composites

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The aim of this research is to evaluate the mechanical and erosion characteristics of stepped polymeric functionally graded materials (PFGMs) reinforced with aluminum particles. By varying the filler content, gradation is achieved along the sample's thickness direction. Three distinct methodologies were adopted in the fabrication of PFGMs; no curing time between the layers (M1), providing curing time between the layers at room temperature (M2) and thermal curing between the layers at 60 C (M3). The results showed that tensile strength and compressive strength of sample M3 increased by 30.3%, 20.8% and 10.3%, 5% as compared to M1 and M2 respectively. The flexural strength of M3 was enhanced by 9% when load direction was from top to bottom (T-B) than from bottom to top (B-T). Moreover, the erosion resistance of M3 was higher among all the test samples.

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Fabrication and characterization of functionally graded nanoclay/glass fiber/epoxy hybrid nanocomposite laminates

Cited by 37 publications

References 23 publications

Mechanical Performance of glass/epoxy composites enhanced by micro- and nanosized aluminum particles

Mechanical Performance of glass/epoxy composites enhanced by micro- and nanosized aluminum particles

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

Research on mechanical and erosion behavior of stepped polymeric functionally graded materials reinforced with aluminum

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