Mechanical Properties of Solution-Blended Graphene Nanoplatelets/Polyether-Ether-Ketone Nanocomposites

Zhang, Ke; Yuan, Xiaozhuang; Li, Dongyu; Du, Juan; Wang, Bo; Li, Tong

doi:10.1021/acs.jpcb.1c04609

Cited by 9 publications

(30 citation statements)

References 50 publications

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“…For the use of GO as structural materials, many efforts have been made to develop GO-based composites with ideal mechanical properties in the last decade [19][20][21]. The authors have investigated the physical mechanisms of energy absorption, while graphene and GO are used to reinforce engineering plastics [22]. However, the use of GO in shockabsorbing materials is still limited due to the low fracture toughness as a result of the addition of GO.…”

Section: Introductionmentioning

confidence: 99%

Lightweight and Flexible Graphene Foam Composite with Improved Damping Properties

et al. 2022

Nanomaterials

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As an elastomer, PDMS can effectively suppress vibration in various fields in a certain temperature range by its viscoelastic behavior in the vitrification transition region, but the vibration isolation effect is poor at high temperature. In this paper, a three-dimensional graphene oxide (GO) foam is fabricated by solution processing method and freeze-drying techniques. After sequential infiltration synthesis, a GO-foam-reinforced PDMS nanocomposite (GO/PDMS) is fabricated with improved damping ability. By adjusting the content of GO, the micros-tructure of GO foam can be sensitively changed, which is crucial to the damping properties of composites. In this paper, by the dynamic mechanical analysis (DMA) of pure PDMS and five kinds of GO/PDMS composites, it is proved that the GO/PDMS composites developed in this work have reliable elasticity and viscoelasticity at 25 °C, which is 100 °C higher than the applicable temperature of pure PDMS. The storage modulus can reach 3.58 MPa, and the loss modulus can reach 0.45 MPa, which are 1.87 times and 2.0 times of pure PDMS, respectively. This GO-based nanocomposite is an ideal candidate for damping materials in passive vibration isolation devices.

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Section: Introductionmentioning

confidence: 99%

Lightweight and Flexible Graphene Foam Composite with Improved Damping Properties

et al. 2022

Nanomaterials

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“…The mechanism of nano‐fillers toughening polymers, like microcrack, interfacial sliding, pull‐out, [ 43 ] may not be the direct reason to mitigate shock waves. According to the literature, [ 44 ] shock energy dissipation ability of nano‐fillers modified composites depends on impedance mismatch between fillers and polymer matrix and can be improved by mediating the dispersity and alignment, partial shock wave is reflected in their interface to dissipate more energy. Combining the testing results above, the reason that the shock wave attenuation ability may depend on the structure and dispersion status of nano‐carbon fillers.…”

Section: Resultsmentioning

confidence: 99%

Investigate of shock wave mitigation performance of nano‐carbon fillers modified epoxy composites

Wang

et al. 2022

Polymer Composites

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Polymer composites are considered to be the most effective materials in mitigating shock waves. Efforts are made in this work to improve shock wave mitigation performance of polymer composites. Epoxy resin (EP) with nano‐carbon fillers, including fullerene (FL), graphene (GP), and multi‐walled carbon nanotubes (CNT) were prepared through solution casting method. A variety of testing methods, including transmission electron microscope (TEM), X‐ray photoelectron spectroscopy (XPS), Fourier transform infrared (FTIR) spectroscopy, differential scanning calorimetry (DSC), scanning electron microscopy (SEM), dynamic mechanical analysis (DMA), shock tube test, have been introduced to investigate the reaction process, dynamic mechanical properties and shock wave mitigation performance of epoxy composites. The results shown that different nano‐carbon fillers lead to differences of spatial and reactivity in EP matrix. The addition of nano‐carbon materials is conducive to improve the shock wave mitigation ability of EP. EP with GP fillers show the best enhancement for the shock wave mitigation in shock tube test. With same addition amount of nano‐carbon fillers, shock wave peak pressure of EP with FL fillers (EP‐FL), EP with CNT fillers (EP‐CNT), and EP with GP fillers (EP‐GP) decreased by 16.5%, 29.6%, and 31.7% in comparison with EP, respectively.

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“…This dimension provides an optimal balance between computational efficiency and accuracy, according to the literature. [19] Sine-alternating shearing model [35,36] is used in this study to forecast the dynamic modulus of nanocomposites, as shown in Figure 4a. The nonequilibrium simulation of shearing covers five sinusoidal alternating strain periods with 20% peak shear strain and was divided into 100 phases to prevent incorrect molecule configurations.…”

Section: Molecular Models For Dynamic Mechanical Propertiesmentioning

confidence: 99%

“…[15,16] The impact response of coarse crystal models of polyetheretherketone, polyethylene, and polyurea was carried out by molecular modeling techniques. [17][18][19] For example, the improvement of graphene on the mechanical properties of the substrate has been studied based on stacked graphene configurations, and the effect of graphene on the impact energy dissipation was also explored. [20][21][22] These findings indicate that more graphene layers and the angle of layers perpendicular to the impact direction have higher energy dissipation capacities.…”

Section: Introductionmentioning

confidence: 99%

“…[20][21][22] These findings indicate that more graphene layers and the angle of layers perpendicular to the impact direction have higher energy dissipation capacities. [19,23] However, the temperature is a key factor that affects the mechanical performances of PDMS; [24] therefore, the microscopic mechanism of shock wave damping under different temperatures of PDMS nanocomposites still needs further exploration.…”

Section: Introductionmentioning

confidence: 99%

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Dynamics Responses of Graphene Nanoplatelets‐Reinforced Polydimethylsiloxane Nanocomposites: A Molecular Dynamics Study

Li,

Zhang

et al. 2023

Macro Theory & Simulations

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Molecular dynamics method is employed to characterize the mechanical properties of polydimethylsiloxane (PDMS) materials reinforced by graphene nanoplatelets (GNPs). Modeling results demonstrate that the addition of GNPs to PDMS significantly improves the damping properties of PDMS at high temperatures. The underlying physical mechanism is further investigated, and it is found that the interfacial interactions between the GNPs and PDMS play a crucial role in the energy dissipation capabilities. At elevated temperatures, a decrease in the interaction energy between the GNPs and PDMS matrix is observed, increasing the interfacial shipment, and improving the energy dissipation. In addition, GNPs will reflect more impact energy at a higher temperature. This study provides valuable insights into the use of GNPs for the improvement of the damping performance of PDMS materials at high temperatures.

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Mechanical Properties of Solution-Blended Graphene Nanoplatelets/Polyether-Ether-Ketone Nanocomposites

Cited by 9 publications

References 50 publications

Lightweight and Flexible Graphene Foam Composite with Improved Damping Properties

Lightweight and Flexible Graphene Foam Composite with Improved Damping Properties

Investigate of shock wave mitigation performance of nano‐carbon fillers modified epoxy composites

Dynamics Responses of Graphene Nanoplatelets‐Reinforced Polydimethylsiloxane Nanocomposites: A Molecular Dynamics Study

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