Nylon toughened epoxy/SWCNT composites

Sun, Luyi; Warren, G. L.; Davis, Daniel Cochece; Sue, Hung‐Jue

doi:10.1007/s10853-010-4921-6

Cited by 24 publications

(8 citation statements)

References 64 publications

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“…This phenomenon can be attributed to reaction between epoxy and nylon‐6, which causes increase in crosslink density evident by the rise in elastic modulus. The presence of unreacted nylon‐6 for higher amounts acts as plasticizer, which causes fall in T g , with increase in fraction of nylon‐6. The curve for T g as a function of composition is shown in Figure .…”

Section: Resultsmentioning

confidence: 99%

“…The reason for drop of T g has been cited as under‐curing of epoxy due to partial miscibility of second phase in epoxy; another reason can be flexible aliphatic nature of thermoplastic backbone . In the present case increase in nylon‐6 loading leads to increase in crosslink density as indicated by increase in storage modulus in rubbery region.…”

Section: Resultsmentioning

confidence: 99%

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In situ growth of multilayered crystals in amorphous matrix: Thermal, dynamic mechanical, and morphological analysis of nylon‐6/epoxy composites

Vyas

Iroh

2013

J of Applied Polymer Sci

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A new procedure for processing of epoxy/polyamide blend was explored via solution polymerization of e-caprolactam in N-methylpyrollidone (NMP), which resulted in a suspension of nylon-6 in solvent at room temperature. The suspension was blended with water based epoxy resin using mechanical stirring at room temperature. Several films were prepared from blend by varying the amount of nylon-6 without curing agent. All films were fully characterized for thermal and dynamic mechanical properties using differential scanning calorimetry and dynamic mechanical analysis. The addition of nylon-6 had a plasticizing effect on epoxy evident by decrease in glass transition temperature (T g ). The reaction between nylon-6 and epoxy was studied using Fourier transform infrared spectroscopy by following the characteristic epoxy peak (914 cm 21 ). The growth of nylon-6 crystals in epoxy matrix lead to spherulitic multiphase morphology, which was observed under scanning electron microscope.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

In situ growth of multilayered crystals in amorphous matrix: Thermal, dynamic mechanical, and morphological analysis of nylon‐6/epoxy composites

Vyas

Iroh

2013

J of Applied Polymer Sci

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“…Recent improvements in VaRTM technology, such as with the development of high‐temperature vacuum assisted resin transfer molding (H‐VaRTM), has allowed significant cost savings and shown good success. The epoxy system used in this work has a low viscosity profile which is not significantly affected by the addition of CNT or PA particles under VaRTM processing conditions [79]. This should allow composite films to be easily processed and transferred to carbon fiber reinforced composites in order to overcome specific material limitations without loss of dynamic mechanical performance [7, 62, 63, 80].…”

Section: Discussionmentioning

confidence: 99%

Electrical conductivity and fracture behavior of epoxy/polyamide‐12/multiwalled carbon nanotube composites

White

Sue

2011

Polymer Engineering & Sci

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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].…”

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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Nylon toughened epoxy/SWCNT composites

Cited by 24 publications

References 64 publications

In situ growth of multilayered crystals in amorphous matrix: Thermal, dynamic mechanical, and morphological analysis of nylon‐6/epoxy composites

In situ growth of multilayered crystals in amorphous matrix: Thermal, dynamic mechanical, and morphological analysis of nylon‐6/epoxy composites

Electrical conductivity and fracture behavior of epoxy/polyamide‐12/multiwalled carbon nanotube composites

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

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