Interface modification of carbon fiber reinforced epoxy composite by hydroxyl/carboxyl functionalized carbon nanotube

De, Soubhik; Fulmali, Abhinav Omprakash; Shivangi, P.N.; Choudhury, Sagnik Ray; Prusty, Rajesh Kumar; Ray, Bankim Chandra

doi:10.1016/j.matpr.2020.02.970

Cited by 27 publications

(14 citation statements)

References 25 publications

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“…[ 8–11 ] By doing this, researchers and engineers combined beneficial features of CNT, glass fiber and epoxy in the CNT embedded GE (CNT‐GE) composite. [ 12–14 ] Many literary works are available where CNT's addition improved mechanical and thermal properties of the GE composite. [ 15–18 ] Although GE composite has good corrosion resistance, when exposed to the marine environment, it is still observed to degrade its lifelong mechanical performance.…”

Section: Introductionmentioning

confidence: 99%

Effect of repeated hydrothermal cycling on the durability of glass fiber/epoxy composites with and without carbon nanotube reinforcement

et al. 2021

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Enhancing the performance of polymeric composites by incorporating carbon nanotube (CNT) is a current research trend. In this article, the performance of glass fiber reinforced epoxy (GE) composite with and without CNT has been observed under repeated hydrothermal cycling (HC) between 15 and 50°C water baths. Before carrying out the HC, the optimum concentration of CNT in the GE composite was obtained by flexural test. This study first confirms that the addition of 0.1 wt% of CNTs resulted in a 6.68% and 6.47% increment in flexural strength and modulus compared to neat GE composite. Alteration in the performance of the neat GE and 0.1 wt% CNT‐GE was then analyzed after performing HC for 20, 40, and 60 cycles by conducting mechanical (flexural), thermomechanical (dynamic mechanical thermal analysis [DMA]), chemical (Fourier transform infrared spectroscopy [FTIR]) and fractographic (scanning electron microscopy [SEM]) analysis. Degradation in the mechanical performance of the CNT embedded GE composite was found to be faster than the neat one with the increasing number of HC. The possible reason has been explained based on the evidence obtained from DMA, FTIR, and SEM analysis.

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Section: Introductionmentioning

confidence: 99%

Effect of repeated hydrothermal cycling on the durability of glass fiber/epoxy composites with and without carbon nanotube reinforcement

et al. 2021

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“…However, the least T g was obtained for 0.1‐O(CNT‐MLG)‐GE composite due to the presence of oxidized CNTs and MLGs. Functionalization improved these nanofillers' dispersion and formed strong chemical bonding with the epoxy resulting in much more reduction in cross‐linking density of the polymer than other composites 65,66 …”

Section: Resultsmentioning

confidence: 99%

Elevated‐temperature mechanical performance of GFRP composite with functionalized hybrid nanofiller

Nuli

Fulmali

et al. 2022

J of Applied Polymer Sci

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In this article, alteration in the mechanical performance of glass fiber/epoxy (GE) composite due to individual and simultaneous incorporation of multi‐walled carbon nanotubes (CNT) and multi‐layered graphene sheets (MLG) in both their pristine and oxidized forms are discussed. Further, the effect of two different nanofiller concentrations (0.1 and 0.3 wt%) were also studied to optimize the performance. Flexural testing of these composites was performed at room temperature (RT), 70 and 110°C in‐situ temperatures to understand their temperature dependence behavior. From all considered composites, GE composite with 0.1 wt% of oxidized CNT and MLG mixture (O‐(CNT‐MLG)) (1:1) showed best flexural performance at all the in‐situ temperatures. The presence of oxidized CNTs and MLGs in the GE composite provided a synergetic strengthening effect like CNT pull‐outs and crack bridging confirmed through SEM imaging. Besides, oxidation helped in the dispersion of CNT and MLG in the composite. Glass transition temperature (Tg) of all the considered composites was evaluated using Differential Scanning Calorimetry (DSC). Fourier Transformed Infra‐red Spectroscopy (FTIR) was also conducted to confirm the functionalization of CNT and MLG after oxidation. During the fractography study, these composites showed variation in fiber/matrix interfacial bonding, matrix deformation, dispersion of nanofillers and fiber imprints, which helped to understand different failure modes responsible for the gross failure of the composites.

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“…Acquired carbon fiber had an epoxide coating which could hinder the optimum deposition due to reduced conductivity. Hence desizing treatment was performed, where carbon fiber was exposed to a temperature of 120°C for 2 h in an oven to remove this coating 30,31 . In the EPD process, carbon fibers and 216 stainless steel plates were used as cathodes and anodes respectively, with an aerial dimension of 25 cm × 25 cm.…”

Section: Methodsmentioning

confidence: 99%

Improving delamination resistance of carbon fiber reinforced polymeric composite by interface engineering using carbonaceous nanofillers through electrophoretic deposition: An assessment at different in‐service temperatures

Fulmali

Nuli

et al. 2020

J of Applied Polymer Sci

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In this article, modification of carbon fiber surface by carbon based nanofillers (multi‐walled carbon nanotubes [CNT], carbon nanofibers, and multi‐layered graphene) has been achieved by electrophoretic deposition technique to improve its interfacial bonding with epoxy matrix, with a target to improve the mechanical performance of carbon fiber reinforced polymer composites. Flexural and short beam shear properties of the composites were studied at extreme temperature conditions; in‐situ cryo, room and elevated temperature (−196, 30, and 120°C respectively). Laminate reinforced with CNT grafted carbon fibers exhibited highest delamination resistance with maximum improvement in flexural strength as well as in inter‐laminar shear strength (ILSS) among all the carbon fiber reinforced epoxy (CE) composites at all in‐situ temperatures. CNT modified CE composite showed increment of 9% in flexural strength and 17.43% in ILSS when compared to that of unmodified CE composite at room temperature (30°C). Thermomechanical properties were investigated using dynamic mechanical analysis. Fractography was also carried out to study different modes of failure of the composites.

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Interface modification of carbon fiber reinforced epoxy composite by hydroxyl/carboxyl functionalized carbon nanotube

Cited by 27 publications

References 25 publications

Effect of repeated hydrothermal cycling on the durability of glass fiber/epoxy composites with and without carbon nanotube reinforcement

Effect of repeated hydrothermal cycling on the durability of glass fiber/epoxy composites with and without carbon nanotube reinforcement

Elevated‐temperature mechanical performance of GFRP composite with functionalized hybrid nanofiller

Improving delamination resistance of carbon fiber reinforced polymeric composite by interface engineering using carbonaceous nanofillers through electrophoretic deposition: An assessment at different in‐service temperatures

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