On the interlaminar fracture toughness of carbon fiber composites enhanced with graphene nano-species

Kostagiannakopoulou, C.; Λούτας, Θεόδωρος; Sotiriadis, G.; Markou, Anastasia; Kostopoulos, V.

doi:10.1016/j.compscitech.2015.08.017

Cited by 84 publications

(39 citation statements)

References 24 publications

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“…For example, layered nanosilica particles have been introduced into epoxy resin to improve both toughness and mechanical strength . Recently nano‐modified epoxies have been used as matrix material in fiber reinforced composites with positive results concerning among others interlaminar fracture toughness and damage tolerance .…”

Section: Introductionmentioning

confidence: 99%

A comparative study between epoxy/Titania micro‐ and nanoparticulate composites thermal and mechanical behavior by means of particle–matrix interphase considerations

Papanicolaou

Kostopoulos

Kontaxis

et al. 2017

Polymer Engineering & Sci

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The aim of the present study is to examine and compare the thermal and mechanical properties of epoxy resin/TiO2 particle microcomposites (0.2 μm) and nanocomposites (21 nm). Composite materials consisting of epoxy resin reinforced with different amounts of TiO2 microparticles (1, 5, 10, 15, and 20% wt) and TiO2 nanoparticles (0.5%, 1%, 3%wt) were prepared. The thermal and mechanical properties of the manufactured composites were investigated and compared through differential scanning calorimetry (DSC) and three‐point bending tests (3PB). Lipatov's Theory was then applied on the DSC results, thus leading to the calculation of the particle‐matrix interphase thickness which was correlated to experimental findings. The glass transition temperature (Tg) of the materials was obtained and the effect of the grain size on the measured Tg values was investigated. The data obtained from DSC tests for both micro‐ and nanoinclusions when normalized with respect to the specific surface area of the particles, resulted in a single continuous curve describing the normalized phase transition enthalpy variation with filler weight fraction. POLYM. ENG. SCI., 58:1146–1154, 2018. © 2017 Society of Plastics Engineers

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Section: Introductionmentioning

confidence: 99%

A comparative study between epoxy/Titania micro‐ and nanoparticulate composites thermal and mechanical behavior by means of particle–matrix interphase considerations

Papanicolaou

Kostopoulos

Kontaxis

et al. 2017

Polymer Engineering & Sci

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“…Nanoparticles within a polymer often have a random orientation, which can cause random or anisotropic mechanical, electrical, and thermal conductivity of the nanocomposite. Many applications of nanocomposites require preferential orientation such as fracture toughness decreased [29] or deicing property in aircraft [30]. To achieve this, it is important to easily process and control the nano-network formation to manufacture composites with one or several preferential orientation (s) controlled by a relatively simple process.…”

Section: Fabrication Challengesmentioning

confidence: 99%

Effect of pre and Post-Dispersion on Electro-Thermo-Mechanical Properties of a Graphene Enhanced Epoxy

Poutrel

Wang

et al. 2016

Appl Compos Mater

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Graphene nanoplatelet (GNP) modified epoxy nanocomposites are becoming attractive to aerospace due to possible improvements in their mechanical, electrical and thermal properties at no weight cost. The process of obtaining reliable material systems provides many challenges, especially at larger scale (a volume effect). This paper reports on the main fabrication stages of GNP-based epoxy composites, namely (i) pre-dispersion, (ii) dispersion, and (iii) post-dispersion. Each stage is developed to show the interest and potential it delivers for property enhancement. Chemical modification of GNP is presented; functionalisation by Triton X-100 shows elastic modulus improvements of the epoxy at low particle content (≤3%). The post-dispersion step as an alignment of GNP into the epoxy by an electrical field is discussed. The electrical conductivity is below the simulated percolation threshold and an improvement of the thermal diffusivity of 220% when compared to non-oriented GNP epoxy sample is achieved. The work demonstrates how the addition of functionalised graphene platelets to an epoxy resin will allow it to act as electrical and thermal conductor rather than as insulator

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“…The results demonstrate a 40% and 53% increase in the tensile strength and fracture toughness of the nanocomposites, respectively. Kostagiannakopoulou et al [25] adopted graphene as toughening agents in matrix to prepare carbon fiber-reinforced polymers and observed a 50% increase in the interlaminar fracture toughness. However, the toughening efficiency of graphene depends on the dispersion state of graphene in polymer matrix.…”

Section: Introductionmentioning

confidence: 99%

Synergistic Delamination Toughening of Glass Fiber-Aluminum Laminates by Surface Treatment and Graphene Oxide Interleaf

Liu

et al. 2020

Nanoscale Res Lett

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The synergistic effects of surface treatment and interleaf on the interlaminar mechanical properties of glass fiberaluminum laminates were studied. Aluminum sheets were treated with alkaline etching. Meanwhile, a graphene oxide (GO) interleaf was introduced between the aluminum sheet and the glass fiber-reinforced epoxy composite. Double cantilever beam and end-notched flexure tests were employed to evaluate the interlaminar fracture toughness of the glass fiber-aluminum laminates. The obtained results show that the toughening efficiency of the interleaf is dependent on the aluminum surface characteristics as well as the GO loading. Further comparison reveals that the highest mode-I and mode-II fracture toughnesses are obtained in the specimens with alkali etching treatment and addition of GO interleaf with 0.5 wt% of GO loading, which are 510% and 381% higher in comparison to the plain specimen. Fracture surfaces were observed to further uncover the reinforcement mechanisms.

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On the interlaminar fracture toughness of carbon fiber composites enhanced with graphene nano-species

Cited by 84 publications

References 24 publications

A comparative study between epoxy/Titania micro‐ and nanoparticulate composites thermal and mechanical behavior by means of particle–matrix interphase considerations

A comparative study between epoxy/Titania micro‐ and nanoparticulate composites thermal and mechanical behavior by means of particle–matrix interphase considerations

Effect of pre and Post-Dispersion on Electro-Thermo-Mechanical Properties of a Graphene Enhanced Epoxy

Synergistic Delamination Toughening of Glass Fiber-Aluminum Laminates by Surface Treatment and Graphene Oxide Interleaf

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