Durability of GFRP nanocomposites subjected to hygrothermal ageing

Firdosh, Salim; Murthy, H.N. Narasimha; Pal, Ratna; Angadi, Gangadhar; Raghavendra, N.; Krishna, M.

doi:10.1016/j.compositesb.2014.09.028

Cited by 48 publications

(23 citation statements)

References 38 publications

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“…The T g of GFRPC‐0 and GFRPC‐5 were 103 and 112 °C, respectively, showing an increase in the T g of composites. Increment in T g (9 °C) for GFRPCs was the consequence of an enhanced crosslinking density, which developed high mechanical reinforcement from ZrO 2 crystalline morphology and restricted segmental motion of chain segments near the filler particles . Thus, ZrO 2 filled GFRPCs can be exercised at higher temperatures than unfilled GFRPC‐0.…”

Section: Resultsmentioning

confidence: 99%

“…Where, the suffix p reveals the specific filler constituents. The actual density of the composite was determined by using Archimedes′ principle . The void volume fraction ( V v ) in composite was computed with eq.…”

Section: Characterizationmentioning

confidence: 99%

“…Increment in T g (9 8C) for GFRPCs was the consequence of an enhanced crosslinking density, 24,53 which developed high mechanical reinforcement from ZrO 2 crystalline morphology and restricted segmental motion of chain segments near the filler particles. 20,54 Thus, ZrO 2 filled GFRPCs can be exercised at higher temperatures than unfilled GFRPC-0. The large endothermic peaks around 400 8C were the decomposition temperatures of unfilled and ZrO 2 filled GFRPCs which were also justified in TGA analysis.…”

Section: Hardnessmentioning

confidence: 99%

“…These defects lead to mechanical and thermal instability of resultant composites and do not permit complete exploitation of the material's strength. In order to lessen these delinquents of FRPCs, several authors have proposed particulate filled FRPCs . Satheesh et al have investigated the tribological properties of FRPCs filled with fly ash filler.…”

Section: Introductionmentioning

confidence: 99%

“…In order to lessen these delinquents of FRPCs, several authors have proposed particulate filled FRPCs. 20,21 Satheesh et al have investigated the tribological properties of FRPCs filled with fly ash filler. They found improved tensile, flexural, compression and hardness properties with increasing fly ash concentration.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Fabrication and characterization of novel zirconia filled glass fiber reinforced polyester hybrid composites

Munawar

Khan

Gull

et al. 2016

J of Applied Polymer Sci

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Novel hybrid glass fiber reinforced polyester composites (GFRPCs) filled with 1-5 wt % microsized zirconia (ZrO 2 ) particles, were fabricated by hand lay-up process followed by compression molding and evaluated their physical, mechanical and thermal behaviors. The consumption of styrene in cured GFRPCs was confirmed by Fourier transform infrared spectroscopy. The potential implementation of ZrO 2 particles lessened the void contents marginally and substantially enhanced the mechanical and thermal properties in the resultant hybrid composites. The GFRPCs filled with 4 wt % ZrO 2 illustrated noteworthy improvement in tensile strength (66.672 MPa) and flexural strength (67.890 MPa) while with 5 wt % ZrO 2 showed 63.93% rise in hardness, respectively, as compared to unfilled GFRPCs. Physical nature of polyester matrix for composites and an improved glass transition temperature (T g ) from 103 to 112 8C was perceived by differential scanning calorimetry thermograms. Thermogravimetric analysis revealed that the thermal stability of GFRPCs was remarkably augmented with the addition of ZrO 2 .

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Section: Resultsmentioning

confidence: 99%

Section: Characterizationmentioning

confidence: 99%

Section: Hardnessmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Fabrication and characterization of novel zirconia filled glass fiber reinforced polyester hybrid composites

Munawar

Khan

Gull

et al. 2016

J of Applied Polymer Sci

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Effects of meso‐ and micro‐scale defects on hygrothermal aging behavior of glass fiber reinforced composites

et al. 2022

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Design and process-induced defects in fiber-reinforced polymers (FRPs) lead to fracture nucleation due to the stress concentrations. In addition to the degradation in mechanical properties, defects can accelerate aging of FRPs and limit their service life. Efforts to understand the impact of defects have largely focused on the mechanical performance of FRPs. However, their impact on aging performance has not yet been extensively investigated. Here, we report the effect of the meso-scale (missing yarn) and micro-scale (micro-crack) defects on the hygrothermal aging behavior of FRPs. Missing yarn defects were generated by pulling-out yarns in warp and weft directions of glass fabric. Then, micro-cracks were induced in composite laminates by acoustic emission controlled tensile loading/unloading. After exposing samples to the hygrothermal aging, we found that meso-scale defects deteriorate mechanical/ thermomechanical performance, reaching 30% decrease in the flexural strength. Notably, even though increasing micro-crack density reduces the moisture saturation time, the aging time is reported as a more predominant design parameter, deteriorating the mechanical performance for micro-crackinduced FRPs.

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Effect of hygrothermal aging on novel hybrid composites: Transforming textile waste into a valuable product

Russel,

Nagappan,

Karsh

et al. 2023

Polymer Composites

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The textile industry now produces thousands of tons of waste worldwide, and the total amount of discarded material waste increases yearly. Hygrothermal aging of cotton/E‐glass (hybrid) fiber reinforced with various proportions of graphene oxide (0%, 1%, 3%, 5%, 7%, and 9%) was performed. Epoxy and vinyl ester (50:50) have been chosen because of the Interpenetrating Polymer Networks (IPNs) concept. Laminates were subjected to 50, 60, and 70°C temperatures for 180 days. Further, Tg and the degree of cross‐linking have been determined by using differential scanning calorimetry (DSC). DSC analysis proves that a hot water bath enhances the cross‐linking of the polymer. IPN laminates were also intermittently weighed for water uptake, and their consecutive mechanical properties like tensile, flexural, and impact strength were obtained. From this work, it was observed that the addition of 5 w.t% graphene oxide in cotton/E glass fiber vinyl ester/epoxy resin hybrid IPN composites showed a tensile strength of 375.61 MPa, flexural strength of 393.54 MPa, Interlaminar shear strength (ILSS) of 49 MPa and the impact strength of 22.54 MPa. Moreover, the lowest inclusion of particulate addition exhibits better mechanical properties than (up to 5% of GO) the highest particulate loading into the matrix. SEM study was conducted on the broken specimens to know the impact of diffusion characteristics on the physical properties of the IPN composites.Highlights Natural and synthetic fibers are used as reinforcements. Waste cotton/E glass fiber vinyl epoxy composites are fabricated. Laminates were subjected to diverse temperatures for 180 days. The moisture diffusion coefficient is proportional to water temperature. Bathtub temperature affects the tensile strength of the laminate.

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Durability of GFRP nanocomposites subjected to hygrothermal ageing

Cited by 48 publications

References 38 publications

Fabrication and characterization of novel zirconia filled glass fiber reinforced polyester hybrid composites

Fabrication and characterization of novel zirconia filled glass fiber reinforced polyester hybrid composites

Effects of meso‐ and micro‐scale defects on hygrothermal aging behavior of glass fiber reinforced composites

Effect of hygrothermal aging on novel hybrid composites: Transforming textile waste into a valuable product

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