Fracture behaviour of carbon fibre/epoxy composites interleaved by MWCNT- and graphene nanoplatelet-doped thermoplastic veils

Mischo, Chiara; Binsfeld, Lucas; Ivanković, Alojz

doi:10.1016/j.compstruct.2019.111767

Cited by 45 publications

(27 citation statements)

References 51 publications

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“…SEM micrographs of the fully‐cured epoxy neat epoxy and its nanocomposites containing 0.5, 1, 2, and 5 wt% of SiO 2 , SEPA, HNT, SiO 2 @HNT, and HSEPA cross‐sectional area of the fracture surface are provided to investigate dispersion state and fracture mode of epoxy and are shown in Figures 8 and 9. A smooth fracture surface was observed for the neat epoxy (Figure 8) which indicates the brittle nature of thermosetting epoxy system 60 . As it is apparent from Figure 8, by increasing the content of particles from 0.5 up to the 5 wt% SiO 2 nanoparticles bonded to each other and formed aggregates.…”

Section: Resultsmentioning

confidence: 86%

Structure–properties‐performance relationships in complex epoxy nanocomposites: A complete picture applying chemorheological and thermo‐mechanical kinetic analyses

Jouyandeh

Jazani

Navarchian

et al. 2021

J of Applied Polymer Sci

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Herein the kinetics of network formation (cross‐linking) and network degradation (thermal decomposition) in a complex system based on epoxy resin reinforced with hyperbranched amino polymer‐functionalized nanoparticles (HAPF) were discussed. Five classes of nanoparticles, that is, nano‐SiO2, halloysite nanotubes (HNTs), HNTs@nano‐SiO2 core/shell, HAPF/nano‐SiO2, HAPF/HNTs@nano‐SiO2 core/shell were loaded at 0.5, 1.0, 2.0 (optimal loading among prepared samples), and 5 wt% were examined. Parameters of the cure kinetics and degradation were correlated, and the mechanical properties were interpreted in terms of microstructure and rheological analyses. The isothermal chemorheological cure kinetics study (60, 70, and 80°C) revealed a low activation energy for epoxy/HAPF/HNTs@nano‐SiO2 core/shell nanocomposite (72.21 kJ/mol), compared with the blank epoxy (79.99 kJ/mol). Correspondingly, gel time of the system decreased from 1040 to 515 to 237 s upon isotherms of 60, 70, and 80°C, respectively. Tensile strength was also increased vividly (ca. 32%), possibly due to the strong interfacial adhesion, which reflected in an induced shear yielding. Nitrogen‐mediated thermal decomposition kinetics suggested an average degradation activation energies of ca. 150 and 210 kJ/mol for the assigned nanocomposites and the blank epoxy, respectively. Overall, there was a complete agreement between the kinetics of network formation and network degradation in the studied epoxy nanocomposite. This work enables understanding of structure‐properties‐performance in complex epoxy nanocomposites.

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Section: Resultsmentioning

confidence: 86%

Structure–properties‐performance relationships in complex epoxy nanocomposites: A complete picture applying chemorheological and thermo‐mechanical kinetic analyses

Jouyandeh

Jazani

Navarchian

et al. 2021

J of Applied Polymer Sci

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“…The trade-off between fracture toughness and in-plane mechanical properties can be minimized by doping some nanoparticles on interleaf material. A recent study by Quan et al 26 showed that the performance of lightweight PPS could be increased significantly by doping different nanoparticles such as multi-walled carbon nanotubes (MWCNTs) and graphene nanoplatelets (GNPs) on the interleaf material. They stated that it was possible to improve Mode-I fracture toughness of CF/EP composites about 210% by using only 5-gsm PPS nonwoven fabric.…”

Section: Discussionmentioning

confidence: 99%

Experimental and statistical analysis of carbon fiber/epoxy composites interleaved with nylon 6,6 nonwoven fabric interlayers

Beylergi̇l

Tanoğlu

Aktaş

2020

Journal of Composite Materials

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Thermoplastic interleaving is a promising technique to improve delamination resistance of laminated composites. In this study, plain-weave carbon fiber/epoxy composites were interleaved with nylon 6,6 nonwoven fabrics with an areal weight density of 17 gsm. The carbon fiber/epoxy composite laminates with/without nylon 6,6 nonwoven fabric interlayers were manufactured by VARTM technique. Double cantilever beam fracture toughness tests were carried out on the prepared composite test specimens in accordance with ASTM 5528 standard. The experimental test data were statistically analyzed by two-parameter Weibull distribution. The results showed that the initiation and propagation fracture toughness Mode-I fracture toughness of carbon fiber/epoxy composites could be improved by about 34 and 156% (corresponding to a reliability level of 0.50) with the incorporation of nylon 6,6 interlayers in the interlaminar region, respectively. The results also revealed that the percent increase in the propagation fracture toughness value was 67 and 41% at reliability levels of 0.90 and 0.95, respectively.

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“…Significant improvement in Mode‐I and Mode‐II fracture toughness of carbon/epoxy composites was achieved by incorporating carbon nanotubes coated carbon fiber based nonwoven interleaves 38 . Similarly, significant improvement in fracture toughness of a carbon fiber/epoxy composite has been reported by incorporating polyphenylene‐sulfide (PPS) veils modified with MWCNTs and graphene nanoplatelets (GNPs) under Mode‐I and Mode‐II loading 39 . Incorporation of polyvinyl.…”

Section: Introductionmentioning

confidence: 94%

“…38 Similarly, significant improvement in fracture toughness of a carbon fiber/epoxy composite has been reported by incorporating polyphenylene-sulfide (PPS) veils modified with MWCNTs and graphene nanoplatelets (GNPs) under Mode-I and Mode-II loading. 39 Incorporation of polyvinyl.…”

Section: Introductionmentioning

confidence: 99%

Enhanced interlaminar shear and impact performance of woven carbon/epoxy composites interleaved with needle punched high performance polyethylene fiber nonwoven

Jabbar

Ahmad

Adnan

et al. 2021

J of Applied Polymer Sci

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In this study, high-performance polyethylene (HPPE) fiber-based needle punched nonwovens were interleaved in cross-plied woven carbon fabric/epoxy composite laminates to enhance their interlaminar and impact properties. The placement of needle punched nonwoven interleaves exhibited considerable enhancement in interlaminar shear strength (ILSS), impact damage tolerance, and compression after impact (CAI) strength of laminates as evidenced by higher interlaminar strength, less absorbed energy, higher elastic energy, reduced damage degree, reduced out-of-plane deformation, higher loadbearing capacity, and higher residual compressive strength as compared to control sample. In particular, the composite laminate with placement of interleaves in alternating sequence between carbon plies resulted in 205.76% increase in ILSS and 129, 103 and 85% increase in CAI at 10, 25, and 40 J impact energy, respectively. Moreover, damaged surface area and out-of-plane deformation reduced to 38.75% and 62.5%, respectively for the same specimen impacted at 40 J energy. These results suggest that the HPPE fiber-based needle punched nonwoven interleaving can be adopted as a simple and low-cost approach compared with other interleaving techniques, to enhance the resistance to delamination, impact performance, and damage tolerance of traditional structural laminates.

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Fracture behaviour of carbon fibre/epoxy composites interleaved by MWCNT- and graphene nanoplatelet-doped thermoplastic veils

Cited by 45 publications

References 51 publications

Structure–properties‐performance relationships in complex epoxy nanocomposites: A complete picture applying chemorheological and thermo‐mechanical kinetic analyses

Structure–properties‐performance relationships in complex epoxy nanocomposites: A complete picture applying chemorheological and thermo‐mechanical kinetic analyses

Experimental and statistical analysis of carbon fiber/epoxy composites interleaved with nylon 6,6 nonwoven fabric interlayers

Enhanced interlaminar shear and impact performance of woven carbon/epoxy composites interleaved with needle punched high performance polyethylene fiber nonwoven

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