Self-repairing CFRPs targeted towards structural aerospace applications

Raimondo, Marialuigia; Nicola, F. De; Volponi, R.; Binder, Wolfgang H.; Michael, Philipp; Russo, Salvatore; Guadagno, Liberata

doi:10.1108/ijsi-11-2015-0053

Cited by 37 publications

(34 citation statements)

References 12 publications

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“…It could have a significant impact on the extent of the working life and safety of synthetic materials for several applications. Among synthetic materials, thermoplastic and thermosetting polymers are widely produced for their employment in many technological and industrial sectors; hence, the possibility to add self-repair functions to these materials is under investigation by researchers around the globe [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23].…”

Section: Introductionmentioning

confidence: 99%

Reversible Self-Healing Carbon-Based Nanocomposites for Structural Applications

et al. 2019

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Reversible Hydrogen Bonds (RHB) have been explored to confer self-healing function to multifunctional nanocomposites. This study has been carried out through a sequence of different steps. Hydrogen bonding moieties, with the intrinsic ability to simultaneously perform the functions of both hydrogen donors and acceptors, have been covalently attached to the walls of carbon nanotubes. The epoxy matrix has been modified to adapt the formulation for hosting self-healing mechanisms. It has been toughened with different percentages of rubber phase covalently linked to the epoxy precursor. The most performant matrix, from the mechanical point of view, has been chosen for the incorporation of MWCNTs. Self-healing performance and electrical conductivities have been studied. The comparison of data related to the properties of nanocomposites containing incorporated functionalized and nonfunctionalized MWCNTs has been performed. The values of the electrical conductivity of the self-healing nanocomposites, containing 2.0% by weight of functionalized multiwalled carbon nanotubes (MWCNTs), range between 6.76 × 10−3 S/m and 3.77 × 10−2 S/m, depending on the nature of the functional group. Curing degrees, glass transition temperatures, and storage moduli of the formulated multifunctional nanocomposites prove their potential for application as functional structural materials.

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Section: Introductionmentioning

confidence: 99%

Reversible Self-Healing Carbon-Based Nanocomposites for Structural Applications

et al. 2019

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“…Currently, polymeric nanocomposite materials have numerous applications. For example, such materials have been used in organic coatings [4], self-healing materials [5], self-repairing aeronautic panels [6], automotive applications [7], food packaging [8], and gas barrier applications [9] .…”

Section: Introductionmentioning

confidence: 99%

Eco-friendly date-seed nanofillers for polyethylene terephthalate composite reinforcement

Elkhouly

Rushdi

Abdel-Magied

2020

Mater. Res. Express

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Polymer composites have been widely exploited in numerous industries. Micro-particle fillers are typically added as reinforcement materials to improve the characteristics of these composites. In this work, organic nanoparticles of date seeds were added as a filler for polyethylene terephthalate (PET) to produce enhanced polymer nanocomposites. A date-seed nanofiller (DSN) was prepared and examined with x-ray diffraction measurements, and then added to PET by hot compression. The characteristics of the PET-DSN composite were experimentally investigated through tests of mass loss, compressive strength, and Vickers micro-hardness. The PET-DSN microstructure was inspected using a scanning electron microscope and Fourier-transform infrared spectroscopy. The results show chemical stability of the PET-DSN composite. Moreover, key mechanical properties of the composite, namely hardness, compressive strength and wear resistance, were improved and optimized with a DSN reinforcement of 0.75 wt%.

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“…The main technology adopted to manufacture such parts relies on the use of multiple plies of suitably impregnated carbon fiber-reinforced (CFR) preform. Many papers deal with the behavior of resin formulations adopted for the impregnation of CFRCs [18,19,20,21,22,23]. In order to improve the electrical conductivity of insulating resins, as epoxies, typically adopted in the manufacturing processes for aeronautical applications, a small weight percentage of electrically conducting fillers can be added [2,19,20,24,25,26].…”

Section: Introductionmentioning

confidence: 99%

Electrical Current Map and Bulk Conductivity of Carbon Fiber-Reinforced Nanocomposites

et al. 2019

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A suitably modified resin film infusion (RFI) process was used for manufacturing carbon fiber-reinforced composites (CFRCs) impregnated with a resin containing nanocages of glycidyl polyhedral oligomeric silsesquioxane (GPOSS) for enhancing flame resistance and multi-wall carbon nanotubes (MWCNTs) to contrast the electrical insulating properties of the epoxy resin. The effects of the different numbers (7, 14 and 24) of the plies on the equivalent direct current (DC) and alternating current (AC) electrical conductivity were evaluated. All the manufactured panels manifest very high values in electrical conductivity. Besides, for the first time, CFRC strings were analyzed by tunneling atomic force microscopy (TUNA) technique. The electrical current maps highlight electrically conductive three-dimensional networks incorporated in the resin through the plies of the panels. The highest equivalent bulk conductivity is shown by the seven-ply panel characterized by the parallel (σ//0°) in-plane conductivity of 16.19 kS/m. Electrical tests also evidence that the presence of GPOSS preserves the AC electrical stability of the panels.

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Self-repairing CFRPs targeted towards structural aerospace applications

Cited by 37 publications

References 12 publications

Reversible Self-Healing Carbon-Based Nanocomposites for Structural Applications

Reversible Self-Healing Carbon-Based Nanocomposites for Structural Applications

Eco-friendly date-seed nanofillers for polyethylene terephthalate composite reinforcement

Electrical Current Map and Bulk Conductivity of Carbon Fiber-Reinforced Nanocomposites

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