A comparison of the effect of nano clay addition on microstructures and mechanical properties of epoxy and polyester reinforced glass/sisal hybrid polymer composites

Chowdary, M. Somaiah; Gujjala, Raghavendra; Kumar, M. S. R. Niranjan; Ojha, Shakuntala; Kiran, Pasala Mohan; Panchal, Manoj

doi:10.1002/pc.26662

Cited by 8 publications

(4 citation statements)

References 45 publications

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“…where [Q G/E ] and [Q E ] are given by equations ( 4) and (8). The elements of σ ij are i, j = {1, 2, 6}.…”

Section: Constitutive Model For Epoxymentioning

confidence: 99%

“…Energy absorption is to be higher for samples with more GFRP layers in the rear face sheet. Chowdary et al [8] have reported that the static tensile strength of epoxy/Glass/Sisal/Sisal/Glass fibers (GSSG) and polyester/GSSG hybrid composites, each with 4 wt.% of nanoclay, improves by 18 and 16%, respectively. The static flexural strength of former composites with 2 wt.% of clay increases by 16 and 24%, respectively.…”

Section: Introductionmentioning

confidence: 99%

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Mechanical behavior of GFRP-Polymer sandwich composites with montmorillonite nanoclay

Sharma,

Purusothaman,

Mohan

et al. 2024

J. Phys.: Conf. Ser.

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A sandwich composite consists of high stiffness and high strength outer layers called face sheets and low-density inner layers called core. In the present study, the sandwich composites comprising glass fabric/epoxy face sheets and epoxy modified with montmorillonite (MMT) nanoclay core are fabricated by a co-curing method. The sandwich panels show higher static tensile and three-point flexural properties such as ultimate strength, elastic modulus, and failure strain on adding up to 3 wt.% of MMT nanoclay contents than pristine sample. The former properties reduce at 4 and 5 wt.% of nanoclay contents owing to the formation of clustering of clay particles within the matrix. The stress-strain behavior of sandwich panels with 0–5 wt.% of MMT nanoclays obtained by laminated plate model follows experiments. The maximum lateral deflection of sandwich panels with nanoclays predicted by assuming them to be a simply supported beam is in-line with experimental results. For low-velocity single impact perforation load, the maximum force of sandwich panels improves on the infusion of up to 3 wt.% of clay while maximum displacement decreases. The ballistic limit velocity and energy absorption of panels improve on adding up to 3 wt.% of clay. Beyond the ballistic limit at different initial velocities, the residual velocity of sandwich panels decreases on addition of up to 3 wt.% of clay and energy absorption increases.

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“…where [Q G/E ] and [Q E ] are given by equations ( 4) and (8). The elements of σ ij are i, j = {1, 2, 6}.…”

Section: Constitutive Model For Epoxymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Mechanical behavior of GFRP-Polymer sandwich composites with montmorillonite nanoclay

Sharma,

Purusothaman,

Mohan

et al. 2024

J. Phys.: Conf. Ser.

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“…Epoxy resin (EP) is a widely employed thermosetting polymer material. [9][10][11] Thus, the modification of EP has been addressed extensively, such as adding functional particles to improve the thermal conductivity, 12 electrical conductivity 13 and flame resistance, 14,15 adding CNTs, 16 nano-clays, 17,18 inorganic alumina, 19,20 graphene oxide, [21][22][23] functionalized aramid nanofibers (fANFs), 24,25 pyrolyzed carbon black, 26 and other hybrid fillers 27,28 to enhance its comprehensive mechanical properties. Our previous studies have shown that the aminated PPTA can significantly strengthen and toughen triglycidyl-p-aminophenol (TGPAP) epoxy resin and its carbon fiber composite, and having little effect on the T g of EP.…”

Section: Introductionmentioning

confidence: 99%

Fully aminated rigid‐rod aromatic polyamide efficiently reinforces tetraglycidyl diamino diphenyl methane epoxy resin and its carbon fiber composite

Wang,

Peng,

Wang

et al. 2024

Polymer Composites

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Tetraglycidyl diamino diphenyl methane (TGDDM) and its carbon fiber composite are widely studied and used because of their heat resistance and high performance. In order to obtain efficient reinforcing effects in a simple manner, we adopt the idea of molecular composite—uniformly dispersing the rigid‐rod macromolecules in the TGDDM matrix. Herein, we prepared fully aminated‐poly(p‐phenylene terephthalamide) by direct polycondensation and hydrogenation reduction as the reinforcing agent. The fully aminated‐PPTA is distributed uniformly in the cross‐linked epoxy resin (EP) network by chemical bonds, and achieves efficient reinforcement. With the addition of only 0.5 wt% fully aminated‐PPTA, the tensile strength and Young's modulus of EP are improved to 127.7 ± 7.4 MPa (+28%) and 3.36 ± 0.15 GPa (+44%); the flexural strength and modulus are improved to 209.6 ± 9.4 MPa (+42%) and 3.70 ± 0.14 GPa (+37%); the notch impact strength is improved by 32%. Crucially, the heat resistance of EP almost remains unchanged. Furthermore, the flexural properties and interlaminar shear strength of the carbon fiber composite are also comprehensively increased. Compared with other modified fillers, the fully aminated‐PPTA is simple to prepare and blend, and is an efficient reinforcing agent for TGDDM and its carbon fiber composite benefitting from its rigid‐rod main chain and amino side groups.Highlights Molecular composite can achieve excellent strengthen and toughen effects. Fully aminated‐PPTA is embedded uniformly in EP network by chemical bonds. TGDDM is effectively reinforced without deteriorated heat resistance. Fully aminated‐PPTA is also a comprehensive reinforcement for EP/CF composite.

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“…[ 15 ] Incorporating inorganic particle fillers into polymer matrixes has improved the matrix's tribological and mechanical properties. [ 16 ] It should be noted that there is very little literature on Nano filler addition to hybrid composites. The mechanical characteristics of hybrid composites vary significantly when high surface area fillers are added.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of mechanical and tribological properties of nano clay reinforced Kevlar/Sisal polyester composites

et al. 2022

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Due to the material's balance of mechanical and ecological features, hybrid composites have become a hot topic among researchers. Hybridization is a helpful process for improving the strength and performance of composite materials. Hybrid composites were created in this study by reinforcing Kevlar(K)/Sisal(S) in Polyester using a hand lay-up method with various wt% (2,4,6 wt%) of Nano clay (NC) reinforcements. Mechanical experiments were performed on hybrid composite laminates to establish their tensile and flexural properties, and SEM was used to characterize the fractured samples. The fabricated specimens were also subjected to erosion tests, conducted at ambient temperature with an elongated silica sand erodent striking at 148 m/s at impingement angles of 30, 60, and 90 . In comparison to 0-4 wt% NC reinforcement, the tensile strength increased by 18% for the polyester/KSSK composites. Flexural strength is highest at 2 wt%, while polyester/KSSK reinforced NC composites have a 28% improvement in flexural strength compared to 0-2 wt%. The erosion wear resistance of 2 wt% NC reinforced KSSK/polyester was excellent in the normal direction, with minor wear at a 90 impingement angle. This conclusion supports the suggested new laminates' suitability for engineering materials in the aviation and automobile industry.

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A comparison of the effect of nano clay addition on microstructures and mechanical properties of epoxy and polyester reinforced glass/sisal hybrid polymer composites

Cited by 8 publications

References 45 publications

Mechanical behavior of GFRP-Polymer sandwich composites with montmorillonite nanoclay

Mechanical behavior of GFRP-Polymer sandwich composites with montmorillonite nanoclay

Fully aminated rigid‐rod aromatic polyamide efficiently reinforces tetraglycidyl diamino diphenyl methane epoxy resin and its carbon fiber composite

Evaluation of mechanical and tribological properties of nano clay reinforced Kevlar/Sisal polyester composites

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