Computational Modeling of Hybrid Carbon Fiber/Epoxy Composites Reinforced with Functionalized and Non-Functionalized Graphene Nanoplatelets

Mahmud, Hashim Al; Radue, Matthew S.; Pisani, William A.; Odegard, Gregory M.

doi:10.3390/nano11112919

Cited by 7 publications

(3 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The characterization of PEEK properties and crystalline nano/microtopology is difficult and expensive to achieve through experimental approaches. Thus, computational methods are a more favorable means of obtaining the evolution of properties during processing. − …”

Section: Introductionmentioning

confidence: 99%

Multiscale Process Modeling of Semicrystalline PEEK for Tailored Thermomechanical Properties

Kashmari,

Al Mahmud,

Patil

et al. 2023

ACS Appl. Eng. Mater.

Self Cite

View full text Add to dashboard Cite

Polyether ether ketone (PEEK) is a semicrystalline thermoplastic that is used in high-performance composites for a wide range of applications. Because the crystalline phase has a higher mass density than that of the amorphous phase, the evolution of the crystalline phase during high-temperature annealing processing steps results in the formation of residual stresses and laminate deformations, which can adversely affect the composite laminate performance. Multiscale process modeling, utilizing molecular dynamics, micromechanics, and phenomenological PEEK crystal kinetic laws, is used to predict the evolution of volumetric shrinkage, elastic properties, and thermal properties, as a function of crystalline phase evolution, and thus annealing time, in the 306−328 °C temperature range. The results indicate that lower annealing temperatures in this range result in a faster evolution of thermomechanical properties and shrinkage toward the pure crystalline values. Therefore, from the perspective of composite processing, it may be more advantageous to choose the higher annealing rates in this range to slow the volumetric shrinkage and allow PEEK stress relaxation mechanisms more time to relax internal residual stresses in PEEK composite laminates and structures.

show abstract

Section: Introductionmentioning

confidence: 99%

Multiscale Process Modeling of Semicrystalline PEEK for Tailored Thermomechanical Properties

Kashmari,

Al Mahmud,

Patil

et al. 2023

ACS Appl. Eng. Mater.

Self Cite

View full text Add to dashboard Cite

show abstract

“…More specifically, the remarkable engineering properties of graphene/epoxy nanocomposites have attracted the interest of both researchers and stakeholders. Therefore, such nanocomposites have been utilized to further improve the mechanical properties of traditional carbon fiber/epoxy composites by fabricating carbon fiber/graphene/epoxy hybrid composites [ 4 , 5 , 6 , 7 , 8 , 9 , 10 ]. Apart from structural materials, graphene-based materials find application in various fields such as ultra-narrow sensors for biomolecules detection [ 11 ] and electrochemical sensors for detecting harmful chemicals released into the air from flame retardants [ 12 ], modulators and detectors fabricated as a two-dimensional material [ 13 ], and water-treatment applications to clean-up impurities in water [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

Probing the Influence of Surface Chemical Functionalization on Graphene Nanoplatelets-Epoxy Interfacial Shear Strength Using Molecular Dynamics

et al. 2023

Self Cite

View full text Add to dashboard Cite

In this work, a characterization study of the interfacial interaction between different types of graphene nanoplatelets and an epoxy matrix is computationally performed. To quantify the discrete mutual graphene–epoxy “interfacial interaction energy” (IIE) within the nanocomposite, molecular dynamics simulations with a reactive force field are performed on a localized model of the suggested nanocomposite. Pull-out molecular dynamics simulations are also performed to predict the interfacial shear strength between the two constituents. The results indicate a significant increase in interfacial adhesion of functionalized nanoplatelets with the hosting epoxy matrix relative to virgin graphene nanoplatelets. The obtained results also demonstrate a dramatic increase in the interfacial interaction energy (IIE) (up to 570.0%) of the functionalized graphene/epoxy nanocomposites relative to the unmodified graphene/epoxy nanocomposites. In the same context, the surface functionalization of graphene nanoplatelets with the polymer matrix leads to a significant increase in the interfacial shear strength (ISS) (up to 750 times). The reported findings in this paper are essential and critical to producing the next generation of lightweight and ultra-strong polymer-based nanocomposite structural materials.

show abstract

“…Many scholars at home and abroad have devoted considerable research to the improvement of the interlaminar properties and flexural mechanical properties of nano materials. The results have shown that the flexural strength and fracture toughness could be improved by adding GNPs [ 9 , 10 , 11 ] and GO [ 12 , 13 ] to the epoxy resin matrix, or by chemically grafting GO/ATP onto the surface of T300 carbon fiber [ 14 ]. Some scholars have also prepared graphene-reinforced composites by electrophoretic deposition [ 15 ], situ polymerization and ethanolic solution precipitation methods [ 16 ], and the results show that the flexural strength and fracture toughness of the composites are improved in varying degrees.…”

Section: Introductionmentioning

confidence: 99%

Effect of Fiber Mass Fraction on Microstructure and Properties of 2D CF-GO/EP Composite Prepared by VIHPS

Chen

et al. 2022

Nanomaterials

View full text Add to dashboard Cite

Graphene is often used to improve interlaminar fracture toughness of carbon fiber/epoxy resin (CF/EP) composites. It is still a challenge to improve the toughness while maintaining the in-layer properties. In this study, 2D graphene oxide carbon fiber reinforced epoxy resin matrix (2D CF-GO/EP) composites were prepared by a vacuum infiltration hot-press forming experimental system (VIHPS), and three-point flexural and end notch flexural (ENF) tests were carried out. With the increase of the fiber mass fraction in the composites, the mode II interlaminar fracture toughness (GIIC) layers decrease gradually, and the bond property between the fiber and matrix interface layer becomes worse, because the accumulation of dense fiber bundles reduces the matrix penetration ability of cracks. However, the flexural properties increased first and then decreased, and reached the best flexural properties at 64.9%. When the fiber mass fraction is too high, the interlamellar bonding properties will decrease, and the fiber bundles will compress and affect each other. The delamination phenomenon will occur between the layers of the composites, which affects the overall bearing strength and stress limit of the composites. The results of the study show that the composites prepared by VIHPS have excellent mechanical properties, and the content of carbon fiber plays an important role in the influencing factors of the interlaminar and in-layer properties of composites.

show abstract

Computational Modeling of Hybrid Carbon Fiber/Epoxy Composites Reinforced with Functionalized and Non-Functionalized Graphene Nanoplatelets

Cited by 7 publications

References 52 publications

Multiscale Process Modeling of Semicrystalline PEEK for Tailored Thermomechanical Properties

Multiscale Process Modeling of Semicrystalline PEEK for Tailored Thermomechanical Properties

Probing the Influence of Surface Chemical Functionalization on Graphene Nanoplatelets-Epoxy Interfacial Shear Strength Using Molecular Dynamics

Effect of Fiber Mass Fraction on Microstructure and Properties of 2D CF-GO/EP Composite Prepared by VIHPS

Contact Info

Product

Resources

About