Fabrication, Structure and Properties of Epoxy/Metal Nanocomposites

Ma, Jun; La, Ly Truc Bao; Zaman, Izzuddin; Meng, Qingshi; Luong, Lee; Ogilvie, Denise; Kuan, Hsu‐Chiang

doi:10.1002/mame.201000409

Cited by 56 publications

(15 citation statements)

References 49 publications

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“…This can be attributed to the dispersion of GnPs inside the elastomer provides more physical crosslinks which restrict the motion of elastomer chains during dynamic mechanical loading resulting in higher T g. . These results are in accord with previous works of polymer nanocomposites [24,[37][38][39][40][41]. …”

Section: Mechanical Propertiessupporting

confidence: 95%

A facile approach to fabricate elastomer/graphene platelets nanocomposites

Araby

Maged

Zaman

et al. 2013

Fourth International Conference on Smart Materials and Nanotechnology in Engineering

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Graphene platelets (GnP) are new class of fillers in nanosize with high aspect ratio, high absolute strength with good compatibility to reinforce most polymers. In this study, we produce GnPs with a scalable and cost effective method using thermal shock followed by ultrasonication. AFM analysis shows that our GnPs consists of 3 -4 layers since it has a thickness of 3.55 ± 0.32 nm. Thermally and electrically conductive elastomer/GnPs nanocomposites have been developed using melt compounding technique. The fabricated nanocomposites show high mechanical performance combined with good functional properties. At 24 vol% of GnP, tensile strength, Young's modulus, and tear strength improved by 230%, 506% and 445%, respectively with an increase of thermal conductivity by 240%. The percolation threshold of electrical conductivity was reported at 16.5 vol%.

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Section: Mechanical Propertiessupporting

confidence: 95%

A facile approach to fabricate elastomer/graphene platelets nanocomposites

Araby

Maged

Zaman

et al. 2013

Fourth International Conference on Smart Materials and Nanotechnology in Engineering

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“…Graphene has attracted a great attention for fabrication of flexible electronics devices/sensors because of its outstanding properties such as ultra‐high toughness, high elasticity, high electron mobility, and transparency and high electrical conductivity . Compared with CNTs, graphene provide lower cost in fabrication in the epoxy composites . Graphene platelets (GnPs) have been introduced recently with enormous advantages for fabrication of flexible sensors, including great structural sturdiness, high C/O proportion resulting in immensely increased electrical conductivity, offering solid foundation for piezoresistive sensors, and cost‐effectiveness .…”

Section: Introductionmentioning

confidence: 99%

A highly flexible, electrically conductive, and mechanically robust graphene/epoxy composite film for its self‐damage detection

Meng

Kenelak

Chand

et al. 2020

J of Applied Polymer Sci

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Advanced functional composites have attracted a great attention for fabricating flexible devices. In this article, the GnP/epoxy composite film was prepared by mixing graphene platelets (GnPs) with epoxy through sonication process. The morphology, mechanical properties, and electrical conductivity of the prepared composites were investigated. As the GnP contents increased from 2.5 to 7.5 vol%, the composites showed an increase in strain sensitivity with the rapid decrease in the strain gauge to 4.4. Additionally, when dynamic movement of the flexible film was performed, at bending and twist angle of 135° and 180°, respectively, steady increase in both resistance changes were detected and compared. The electrical resistance of the flexible was measured over a temperature range of 20–95°C, an increase in temperature lead to a linearly equivalent increase in resistance. The composites can also detect slight pressure changes at 2 kPa compression force with rapid decrease of resistance. Additionally, fatigue test was performed with stable, sensitive, and no distinguishable reading under 2,000 stretching cycles. The composite film exhibits an excellent self‐sensing responds when fracture occurred. Thus, the obtained highly flexible, conductive, and mechanical robust composite sensor can be applied as advanced composites sensors for health monitoring.

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“…A myriad of attempts has been made at improving the fracture toughness of epoxy resins using inorganic particles [1][2][3][4]. In some cases, epoxy composites contained between 10 and 30 wt% of filler material.…”

Section: Introductionmentioning

confidence: 99%

Interface modification of clay and graphene platelets reinforced epoxy nanocomposites: a comparative study

et al. 2014

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The interface between the matrix phase and dispersed phase of a composite plays a critical role in influencing its properties. However, the intricate mechanisms of interface are not fully understood, and polymer nanocomposites are no exception. This study compares the fabrication, morphology, and mechanical and thermal properties of epoxy nanocomposites tuned by clay layers (denoted as m-clay) and graphene platelets (denoted as m-GP). It was found that a chemical modification, layer expansion and dispersion of filler within the epoxy matrix resulted in an improved interface between the filler material and epoxy matrix. This was confirmed by Fourier transform infrared spectroscopy and transmission electron microscope. The enhanced interface led to improved mechanical properties (i.e. stiffness modulus, fracture toughness) and higher glass transition temperatures (T g) compared with neat epoxy. At 4 wt% m-GP, the critical strain energy release rate G 1c of neat epoxy improved by 240 % from 179.1 to 608.6 J/m 2 and T g increased from 93.7 to 106.4°C. In contrast to m-clay, which at 4 wt%, only improved the G 1c by 45 % and T g by 7.1 %. The higher level of improvement offered by m-GP is attributed to the strong interaction of graphene sheets with epoxy because the covalent bonds between the carbon atoms of graphene sheets are much stronger than silicon-based clay.

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Fabrication, Structure and Properties of Epoxy/Metal Nanocomposites

Cited by 56 publications

References 49 publications

A facile approach to fabricate elastomer/graphene platelets nanocomposites

A facile approach to fabricate elastomer/graphene platelets nanocomposites

A highly flexible, electrically conductive, and mechanically robust graphene/epoxy composite film for its self‐damage detection

Interface modification of clay and graphene platelets reinforced epoxy nanocomposites: a comparative study

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