Influence of Nano-Silica on Enhancing the Mechanical Properties of Sisal/Kevlar Fiber Reinforced Polyester Hybrid Composites

Chowdary, M. Somaiah; Raghavendra, G.; Kumar, M. S. R. Niranjan; Ojha, Shakuntala; Boggarapu, Vasavi

doi:10.1007/s12633-020-00846-y

Cited by 33 publications

(27 citation statements)

References 31 publications

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“…However, beyond 3 wt% silica nanoparticles loading the flexural strength start decreasing, which may be attributed to the increased filler-fiber interaction, and increase in void content may cause a weak load transfer mechanism between filler and matrix. [13,25] A similar result for flexural strength was reported for silica nanoparticles loaded sisal-Kevlar fiber reinforced hybrid epoxy composites by M. S. Chowdary et al, [33] where the highest flexural strength was observed for 4 wt% silica nanoparticles and decreased with further increase in silica nanoparticles loading. Figure 6 presents the values of impact energy of the silica nanoparticles added composites.…”

Section: Mechanical Propertiessupporting

confidence: 80%

“…Zhou et al [39] confirmed that the tensile strength of the polymer composite increased by adding a small amount of silica nanoparticles, however, tensile strength declined with higher silica nanoparticles concentration. While studying the influence of silica nanoparticles (2, 4, 6 wt%) on performance of sisal-Kevlar fiber reinforced hybrid epoxy composites, M. S. Chowdary et al [33] concluded that tensile strength remains highest for 4 wt% silica nanoparticles loaded composites, thereafter a reduction in tensile strength was observed with further increase in silica nanoparticles content. Similar results were reported in literature for increased nanoparticle loading.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

“…They determined that the inclusion of montmorillonite nanoclay resulted in increased density with reduced the void content and water absorption of hybrid nanocomposites, while organically modified montmorillonite nanoclay resulted in nanocomposites with superior dimensional stability. M. S. Chowdary et al [33] studied the impact of silica nanoparticles and the stacking sequence of the sisal-Kevlar reinforced polyester hybrid nanocomposite. An increase of 23% in tensile strength and 37% increase in flexural strength was observed with 4 wt.% silica nanoparticles added composites.…”

Section: Introductionmentioning

confidence: 99%

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Effect of silica nanoparticles on physical, mechanical, and wear properties of natural fiber reinforced polymer composites

et al. 2021

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Hemp-sisal natural fiber-reinforced hybrid epoxy composites containing a varying proportion of silica nanoparticles (0, 1, 2, 3, and 4 wt%) were manufactured and subsequently evaluated for physical, mechanical, and sliding wear properties. The density of the composite was found to increase, whereas void content was found to decrease with the increase of silica nanoparticles content. The composites containing 2 wt% silica nanoparticles exhibit maximum tensile strength, impact strength, and hardness, whereas the composite with 3 wt% silica nanoparticles showed the highest flexural strength. Dry sliding wear tests of the manufactured composites were carried out on a pin-on-disc machine under different sliding speeds, distances and applied loads at room temperature. Taguchi based L 16 orthogonal array design was used to find the optimum combination of control factors resulting in higher wear resistance. The analysis reveals that the silica nanoparticles contribute the most towards wear performance with a contribution ratio of 32.61% and a combination of 2 wt% of silica nanoparticles, 10 N normal load, 1.5 m/s sliding speed and 500 m sliding distance resulted in higher wear resistance.

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Section: Mechanical Propertiessupporting

confidence: 80%

Section: Mechanical Propertiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of silica nanoparticles on physical, mechanical, and wear properties of natural fiber reinforced polymer composites

et al. 2021

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“…The tensile strength and modulus were higher, whereas the flexural strength decreased for 2.5 wt% filler laminate. Chowdary et al [34] evaluated the mechanical properties of nanosilica filled sisal/kevlar hybrid composites. The 4 wt% of nanosilica results in elevated tensile and flexural strength of 23% and 36%, respectively, for alternative layers of kevlar and sisal fabrics.…”

Section: Introductionmentioning

confidence: 99%

Pongamia pinnata shell powder filled sisal/kevlar hybrid composites: Physicomechanical and morphological characteristics

et al. 2021

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The composite industry was attracted by natural fiber reinforced polymer materials for various valuable engineering applications due to its ecofriendly nature, less cost, and enhanced mechanical and thermal properties. This present work aimed at incorporating sisal and kevlar woven fabrics with the epoxy matrix and studying the effect of Pongamia pinnata shell powder on the sisal/ kevlar hybrid composite. Six different laminates were prepared using hand layup method with filler percentage varying 2, 4, and 6 wt%. The prepared laminates cut according to the ASTM standards for performing different mechanical tests. Results reveal that the reduction of void percentage was observed at higher filler contents, while the incorporation of kevlar fabric enhances the impact strength by 279%, tensile strength by 89.77%, and tensile modulus value by 2% in comparison with pure natural fabric laminate L-1. The flexural strength and interlaminar shear strength were higher for 2% filler composites, while the highest flexural modulus and hardness values were observed for 6% filler-filled composites. The water absorption percentage was maximum for sisal laminate L-1 and minimum for kevlar laminate L-2. The fractured tensile and flexural specimens were analyzed by scanning electron microscopy.

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“…[7][8][9][10][11][12] Hence, there is a need for developing a new class of materials with desired strength which is equivalently achieved using biowaste-processed materials. Some commercially available biowaste materials are jute, 13,14 wood apple, 15 sisal, 16 rice husk, 17 banana, and pineapple. 18 In contrast, the main drawbacks of natural fibers are strong polarity and compounding, which make them incompatible with various polymer matrices.…”

Section: Introductionmentioning

confidence: 99%

Experimental evaluation and comparison of silica/biocarbon particulate-epoxy composites for high-strength applications

Ojha

Pranay

Raghavendra

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part L:

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Biowaste utilization and management are of primary concern in the current scenario for a sustainable environment. One way to enable this is to replace commercial fillers with composite materials. In the present study, the fillers, that is, silica and biocarbon are extracted from rice husk and processed further as biofillers for processing composites. With inherent processing challenges involved in biofiller-based composites, this study investigated and compared the influence of dispersed silica and biocarbon particles independently on the mechanical and tribological properties of epoxy composites. The composites were fabricated by a hand lay-up process. The composites were fabricated with three different filler loadings each of silica and biocarbon separately (2, 4 and 6 wt%). The mechanical characterization results illustrate that tensile, flexural, compression, and erosion wear showed superior properties compared to neat epoxy. It is also evident that there was an enhancement of 19% in compressive strength in composites compared to neat epoxy at 2 wt% silica and biocarbon filler composites. The tensile strength increased by 2.6 times when compared to neat epoxy at 2 wt% silica filler addition. Alongside, erosion results confirm that the properties of pure epoxy change from semi-brittle to ductile due to the addition of silica and biocarbon fillers. This semi-brittle to ductile nature is important for marine applications as propellers are subject to extreme cold and warm temperatures with very little transition time, leading to ductile to brittle failure. Finally, it can be inferred that silica extracted from rice husk has versatile applications when compared to the carbon extract.

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Influence of Nano-Silica on Enhancing the Mechanical Properties of Sisal/Kevlar Fiber Reinforced Polyester Hybrid Composites

Cited by 33 publications

References 31 publications

Effect of silica nanoparticles on physical, mechanical, and wear properties of natural fiber reinforced polymer composites

Effect of silica nanoparticles on physical, mechanical, and wear properties of natural fiber reinforced polymer composites

Pongamia pinnata shell powder filled sisal/kevlar hybrid composites: Physicomechanical and morphological characteristics

Experimental evaluation and comparison of silica/biocarbon particulate-epoxy composites for high-strength applications

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