Mechanical properties and thermal conductivity of graphene nanoplatelet/epoxy composites

Wang, Fuzhong; Drzal, Lawrence T.; Qin, Yan; Zhang, Huang

doi:10.1007/s10853-014-8665-6

Cited by 361 publications

(274 citation statements)

References 33 publications

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“…This confirms the poor interfacial bonding between the epoxy and nanoparticles. These results are similar to Wang et al [75] and King et al [76] although the value was slightly higher than is found in this paper. This may be due to the curing process, the dispersion method, or the specific type of GNP used, confirming that every single modification in the manufacture of GNP based epoxy nanocomposites have an impact of the mechanical properties.…”

Section: Reference Samples: Raw Gnp/epoxysupporting

confidence: 93%

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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Section: Reference Samples: Raw Gnp/epoxysupporting

confidence: 93%

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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“…For a high content of graphene, polymer composite possesses better interfacial compatibility, which favors phonon transport [28], and thus increases thermal conductivity. Similar conclusions in thermal conductivity of epoxy matrix was previously reported by [27,29]. Homogeneous dispersion of fillers improves the hardness of the polymer coating.…”

Section: Characterization Of the Composite Coatingsupporting

confidence: 88%

Enhanced Tribological Properties of Polymer Composite Coating Containing Graphene at Room and Elevated Temperatures

Zhang

Wei

et al. 2018

Coatings

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Abstract:To improve the tribology properties of the polymer coating under elevated temperature, the epoxy coating was reinforced with nano graphene. The micro-hardness, heat conductivity, and thermo-gravimetric properties of the coating were enhanced as filled graphene. The friction and wear properties of the polymer coating were studied using a pin-on-disc tribo-meter under room and elevated temperatures. The results showed that under room temperature, the friction coefficient and the wear rate of the coating adding 4.0 wt % graphene was 80% and 76% lower than that of the neat epoxy coating, respectively. As the test temperature increased, the friction coefficient of the graphene/polymer coatings decreased at first and then slightly increased. The friction coefficient was at its lowest value under 150 • C and then increased as the temperature rose to 200 • C. By adding 4.0 wt % graphene, the friction coefficient and wear rate of the polymer coating were further reduced, especially at elevated temperatures.

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“…It should be mentioned that different T g values have been reported for the same materials, which can be the result of incorporating different methods of analysis [20], neglecting the effect of fillers on the degree and nature of crystallinity of the matrix [20], or different methods of preparation [224]. Graphene nanoplatelet (GNP)-5 5 wt% Epoxy VDW Strength~− 60% [178] Noncovalent functionalized graphene flakes 0.25 wt% Epoxy Improved interaction Strength + 75% [179] a Copolymers of styrene and p-chloromethylstyrene…”

Section: Glass Transition (T G )mentioning

confidence: 99%

A review on the role of interface in mechanical, thermal, and electrical properties of polymer composites

Kashfipour

Mehra

Zhu

2018

Adv Compos Hybrid Mater

161

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Composite materials and especially polymer composites are widely used in daily life and different industries due to their vastly different properties and design flexibility. It is known that the properties of the composites are strongly related to the properties of its constituents. However, it has been reported in many studies, experimentally and by simulations, that the characteristics of the composites do not follow the rule of mixing. It means that in addition to properties of the constituents, there are other parameters affecting the final physicochemical properties of composites. The interfacial interactions between fillers and host is one of the factors which can strongly affect the properties of the composite. In this review, we summarized the type of interactions between the constituents, their improvement techniques, interaction measurement methods, and the effects of interfacial interactions on thermal, mechanical, and electrical properties of composites.

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Mechanical properties and thermal conductivity of graphene nanoplatelet/epoxy composites

Cited by 361 publications

References 33 publications

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

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

Enhanced Tribological Properties of Polymer Composite Coating Containing Graphene at Room and Elevated Temperatures

A review on the role of interface in mechanical, thermal, and electrical properties of polymer composites

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