Nonwoven fabrics with carbon nanotubes used as interleaves in CFRP

Latko-Durałek, Paulina; Dydek, Kamil; Bolimowski, Patryk; Golonko, Emilia; Durałek, Paweł; Kozera, Rafał; Boczkowska, Anna

doi:10.1088/1757-899x/406/1/012033

Cited by 9 publications

(9 citation statements)

References 32 publications

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Section: Resultsmentioning

confidence: 99%

“…Therefore, broadband 3D microwave absorbers can be designed experimentally and theoretically [38]. One of the possibilities is to produce nonwovens directly from such fibers and to place them into the fiber-reinforced polymers that have been presented in our previous papers [39,40]. The dielectric properties of the nanocomposite fibers made from coPA_A + 7 wt% MWCNTs with diameter 202 µm were investigated in a wide temperature range (120-400 K).…”

Section: Dielectric Propertiesmentioning

confidence: 99%

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Fibers of Thermoplastic Copolyamides with Carbon Nanotubes for Electromagnetic Shielding Applications

et al. 2021

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Polymer composites containing carbon nanofillers are extensively developed for electromagnetic shielding applications, where lightweight and flexible materials are required. One example of the microwave absorbers can be thermoplastic fibers fabricated from copolyamide hot melt adhesives and 7 wt % of multi-walled carbon nanotubes, as presented in this paper. A broadband dielectric spectroscopy confirmed that the addition of carbon nanotubes significantly increased microwave electrical properties of the thin (diameter about 100 μm) thermoplastic fibers. Moreover, the dielectric properties are improved for the thicker fibers, and they are almost stable at the frequency range 26–40 GHz and not dependent on the temperature. The variances in the dielectric properties of the fibers are associated with the degree of orientation of carbon nanotubes and the presence of bundles, which were examined using a high-resolution scanning microscope. Analyzing the mechanical properties of the nanocomposite fibers, as an effect of the carbon nanotubes addition, an improvement in the stiffness of the fibers was observed, together with a decrease in the fibers’ elongation and tensile strength.

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Section: Resultsmentioning

confidence: 99%

Section: Dielectric Propertiesmentioning

confidence: 99%

Fibers of Thermoplastic Copolyamides with Carbon Nanotubes for Electromagnetic Shielding Applications

et al. 2021

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“…These results are hardly surprising as in the literature, many through‐thickness conductivity studies reported significant reduction of mechanical properties 36,53–61 (or did not report on mechanical properties 3,62–66 ).…”

Section: Resultsmentioning

confidence: 55%

Improving through‐thickness conductivity of carbon fiber reinforced polymer using carbon nanotube/polyethylenimine at the interlaminar region

Robert

Thitasiri

Mamalis

et al. 2020

J of Applied Polymer Sci

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The through-thickness conductivity of carbon fiber reinforced polymer (CFRP) composite was increased by incorporating multiwalled carbon nanotubes in the interlaminar region. Carbon nanotubes (CNTs) were dispersed in a polyethylenimine (PEI) binder, which was then coated onto the carbon fiber fabric. Standard vacuum-assisted resin infusion process was applied to fabricate the composite laminates. This modification technique aims to enhance the electrical conductivity in through-thickness direction for the purpose of nondestructive testing, damage detection, and electromagnetic interference shielding. CNT concentrations ranging from 0 to 0.75 wt% were used and compared to pristine CFRP samples (reference). The through-thickness conductivity of the CFRP exhibited an improvement of up to 781% by adopting this technique. However, the dispersion of CNT in PEI led to a viscosity increase and poor wetting properties which resulted in the formation of voids/defects, poor adhesion (as shown in scanning electron micrographs) and the deterioration of the mechanical properties as manifested by interlaminar shear strength and dynamic mechanical analysis measurements.

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“…Other methods of introducing carbon nanotubes into the composite structure are growing them on carbon fibres [ 19 ] or spraying them onto carbon fibre reinforcement [ 20 ]. Carbon nanotubes can also be incorporated into the CFRPs structure in the form of intermediate products such as CNT-doped nonwovens which can be produced by electrospinning [ 21 ], melt-blown [ 22 , 23 ] as well as extrusion and pressing [ 24 ]. In these techniques, the nonwovens are made of concentrates that contain carbon nanotubes dispersed in a polymer matrix.…”

Section: Introductionmentioning

confidence: 99%

Effect of SWCNT-Tuball Paper on the Lightning Strike Protection of CFRPs and Their Selected Mechanical Properties

et al. 2021

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The main aim of this work was the investigation of the possibility of replacing the heavy metallic meshes applied onto the composite structure in airplanes for lightning strike protection with a thin film of Tuball single-wall carbon nanotubes in the form of ultra-light, conductive paper. The Tuball paper studied contained 75 wt% or 90 wt% of carbon nanotubes and was applied on the top of carbon fibre reinforced polymer before fabrication of flat panels. First, the electrical conductivity, impact resistance and thermo-mechanical properties of modified laminates were measured and compared with the reference values. Then, flat panels with selected Tuball paper, expanded copper foil and reference panels were fabricated for lightning strike tests. The effectiveness of lightning strike protection was evaluated by using the ultrasonic phased-array technique. It was found that the introduction of Tuball paper on the laminates surface improved both the surface and the volume electrical conductivity by 8800% and 300%, respectively. The impact resistance was tested in two directions, perpendicular and parallel to the carbon fibres, and the values increased by 9.8% and 44%, respectively. The dynamic thermo-mechanical analysis showed higher stiffness and a slight increase in glass transition temperature of the modified laminates. Ultrasonic investigation after lightning strike tests showed that the effectiveness of Tuball paper is comparable to expanded copper foil.

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Nonwoven fabrics with carbon nanotubes used as interleaves in CFRP

Cited by 9 publications

References 32 publications

Fibers of Thermoplastic Copolyamides with Carbon Nanotubes for Electromagnetic Shielding Applications

Fibers of Thermoplastic Copolyamides with Carbon Nanotubes for Electromagnetic Shielding Applications

Improving through‐thickness conductivity of carbon fiber reinforced polymer using carbon nanotube/polyethylenimine at the interlaminar region

Effect of SWCNT-Tuball Paper on the Lightning Strike Protection of CFRPs and Their Selected Mechanical Properties

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