Improved interlaminar shear properties of multiscale carbon fiber composites with bucky paper interleaves made from carbon nanofibers

Khan, Shafi Ullah; Kim, Jang Kyo

doi:10.1016/j.carbon.2012.07.011

Cited by 157 publications

(72 citation statements)

References 51 publications

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“…Interlaminar fracture toughness and interfacial shear strength between the fiber and matrix are the important parameters that determine the through thickness properties of the composites. Mechanical solutions such as stitching [7] and z-pinning [8], changing the fiber architecture by braiding [9] and 3D weaving [10], toughening the resins by incorporating toughening agents [11] or thermoplastic binders, and interleaving [12][13][14] have been developed to improve interlaminar fracture toughness. However most of these developments result in compromising the in-plane mechanical properties; where stitching, braiding, 3D weaving, and z-pinning reduce the overall in-plane properties, toughened resins and interleaving can degrade the compressive strength of the composite if not incorporated thoughtfully.…”

Section: Introductionmentioning

confidence: 99%

Woven Glass Fiber Composites with Aligned Carbon Nanotube Sheet Interlayers

Bhanushali

Bradford

2016

Journal of Nanomaterials

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This investigation describes the design, fabrication, and testing of woven glass fiber reinforced epoxy matrix laminates with aligned CNT sheets integrated between plies in order to improve the matrix dominated through thickness properties such as the interlaminar fracture toughness at ply interfaces. Using aligned CNT sheets allows for a concentration of millimeter long CNTs at the most likely point of laminate failure. Mode I and Mode II interlaminar fracture toughness of various CNT modified samples were investigated using double cantilever beam (DCB) and end notched flexure (ENF) experiments, respectively. Short beam strength (SBS) and in-plane tensile properties of the CNT modified samples were also investigated. Moderate improvement was observed in Mode I and Mode II fracture toughness at crack initiation when aligned CNT sheets with a basis weight of 0.354 g/m 2 were used to modify the ply interface. No compromise in the in-plane mechanical properties of the laminate was observed and very little improvement was observed in the shear related short beam strength of the CNT modified laminates as compared to the control samples. Integration of aligned CNT sheets into the composite laminate imparted in-plane and through thickness electrical properties into the nonconductive glass fiber reinforced epoxy composite laminates.

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Section: Introductionmentioning

confidence: 99%

Woven Glass Fiber Composites with Aligned Carbon Nanotube Sheet Interlayers

Bhanushali

Bradford

2016

Journal of Nanomaterials

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“…Well dispersed CNTs are formed as thin interleave film [5,130,132,[190][191][192][193]. The nanocomposites thin film can also be manufactured using electrospinning [194][195][196][197] and electrospun [198][199][200] processes.…”

Section: Nanofillers In Interleavementioning

confidence: 99%

Multiscale Polymer Composites: A Review of the Interlaminar Fracture Toughness Improvement

Dikshit

Bhudolia

Joshi

2017

Fibers

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Abstract:Composite materials are prone to delamination as they are weaker in the thickness direction. Carbon nanotubes (CNTs) are introduced as a multiscale reinforcement into the fiber reinforced polymer composites to suppress the delamination phenomenon. This review paper presents the detailed progress made by the scientific and research community to-date in improving the Mode I and Mode II interlaminar fracture toughness (ILFT) by various methodologies including the effect of multiscale reinforcement. Methods of measuring the Mode I and Mode II fracture toughness of the composites along with the solutions to improve them are presented. The use of different methodologies and approaches along with their performance in enhancing the fracture toughness of the composites is summarized. The current state of polymer-fiber-nanotube composites and their future perspective are also deliberated.

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“…Currently, interleaving materials generally use thermoplastic resin particles, thin films and non-woven fabrics [8][9][10][11]. Among these materials, tough and high-strength fibers such as nylon fiber, aramid fiber, carbon nanofiber and their non-wovens are attracting more attention [9,[12][13][14]. By introducing micro-and nano-structures into the interlays, new crack propagation mechanisms were introduced to improve the areal density of energy dissipation, thus the interlaminar fracture toughness of the composites was remarkably improved.…”

Section: Introductionmentioning

confidence: 99%

Effect of Paper or Silver Nanowires-Loaded Paper Interleaves on the Electrical Conductivity and Interlaminar Fracture Toughness of Composites

Guo¹,

2018

Aerospace

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Abstract:The effect of plant-fiber paper or silver nanowires-loaded paper interleaves on the electrical conductivity and interlaminar fracture toughness of composites was studied. Highly conductive paper was prepared by surface-loaded silver nanowires. The percolation threshold appeared at about 0.4 g/m 2 . The surface resistivity reached 2.3 Ω/sq when the areal density of silver nanowires was 0.95 g/m 2 . After interleaving the conductive papers in the composite interlayers, in-plane electrical conductivity perpendicular to the fiber direction was increased by 171 times and conductivity through thickness direction was increased by 2.81 times. However, Mode I and Mode II interlaminar fracture toughness decreased by 67.3% and 66.9%, respectively. Microscopic analysis showed that the improvement of conductivity was attributable to the formation of an electrical conducting network of silver nanowires which played a role in electrical connection of carbon fiber plies and the interleaving layers. However, the density of the highly packed flat plant fibers impeded the infiltration of resin. The parallel distribution of flat fibers to the carbon plies, and poor resin-fiber interface made the interlaminar fracture occur mainly at the interface of plant fibers and resin inside the interleaves, resulting in a decline of the interlaminar fracture toughness. The surface-loading of silver nanowires further impeded the infiltration of resin in the densely packed plant fibers, resulting in further decline of the fracture toughness.

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Improved interlaminar shear properties of multiscale carbon fiber composites with bucky paper interleaves made from carbon nanofibers

Cited by 157 publications

References 51 publications

Woven Glass Fiber Composites with Aligned Carbon Nanotube Sheet Interlayers

Woven Glass Fiber Composites with Aligned Carbon Nanotube Sheet Interlayers

Multiscale Polymer Composites: A Review of the Interlaminar Fracture Toughness Improvement

Effect of Paper or Silver Nanowires-Loaded Paper Interleaves on the Electrical Conductivity and Interlaminar Fracture Toughness of Composites

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