Enhanced thermal resistance of GO/C/phenolic nanocomposite by introducing ZrB2 nanoparticles

Amirsardari, Zahra; Aghdam, Rouhollah Mehdinavaz; Salavati‐Niasari, Masoud; Shakhesi, Saeed

doi:10.1016/j.compositesb.2015.01.011

Cited by 48 publications

(33 citation statements)

References 34 publications

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“…GO and g-C 3 N 4 in the filled composites both increase the T max values by more than 108C, however, nanofillers used in this study have no desired effect on the residual mass at 1,0008C ( Fig. 7b and Table 3) and GO even results in a reduction in residual mass of GO-filled composite [24]. Fig.…”

Section: Thermagravimetric Analysismentioning

confidence: 60%

Mechanical, thermal, and ablative properties between graphene oxide and graphitic carbon nitride based carbon/phenolic composites: a comparative study

Yang

Lü

et al. 2018

Polymer Composites

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In this article, we investigated the interfacial, thermal and ablative properties of two nanofillers‐filled carbon/phenolic (CF/PR) composites. In particular, graphene oxide (GO) and graphitic carbon nitride (g‐C3N4) were used to produce lowly loaded (0.1 wt%) composites. The ablative properties of the composites were researched through an oxygen–acetylene flame torch test and were characterized through analysis of the post‐burning morphology, ablation depth and width. GO‐ and g‐C3N4‐filled composites showed 62.02 and 22.36% improvement in ablation resistance compared with the pristine, respectively, even with different mechanisms. The proposed mechanism of GO‐filled composite is that GO may significantly contribute to increasing the graphitization of the fiber surface and further improving the thermal resistance to high‐temperature ablation. However, thicker fiber diameter and charred layer of ablative zone in g‐C3N4‐filled composite can dissipate the flammable gases and improve the anti‐oxidation. POLYM. COMPOS., 39:E1928–E1938, 2018. © 2018 Society of Plastics Engineers

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Section: Thermagravimetric Analysismentioning

confidence: 60%

Mechanical, thermal, and ablative properties between graphene oxide and graphitic carbon nitride based carbon/phenolic composites: a comparative study

Yang

Lü

et al. 2018

Polymer Composites

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“…No obvious difference in device performance was observed between the flat and bent devices, demonstrating excellent flexibility and 3-D conformality of the all-carbon memristor for applications in wearable electronics. Furthermore, the all-carbon memristive synapse possesses resistance to high temperature due to the good thermal conductivity and thermal stability of graphene-based layered materials 19,63,64 . The device was transferred onto a Si substrate and then heated to a high temperature of 450 K. As shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

“…Among them, carbonbased memristors, as an important component of carbonbased electronics, can be developed into wearable synaptic devices owing to their good mechanical flexibility and transferability [16][17][18] . Furthermore, all-carbon memristive synapses are expected to exhibit high thermal and chemical stability 19,20 , enhancing their adaptability to different application environments. However, some factors limit the development of all-carbon memristive synapses.…”

Section: Introductionmentioning

confidence: 99%

Photoreduced nanocomposites of graphene oxide/N-doped carbon dots toward all-carbon memristive synapses

et al. 2020

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An all-carbon memristive synapse is highly desirable for hardware implementation in future wearable neuromorphic computing systems. Graphene oxide (GO) can exhibit resistive switching (RS) and may be a feasible candidate to achieve this objective. However, the digital-type RS often occurring in GO-based memristors restricts the biorealistic emulation of synaptic functions. Here, an all-carbon memristive synapse with analog-type RS behavior was demonstrated through photoreduction of GO and N-doped carbon quantum dot (NCQD) nanocomposites. Ultraviolet light irradiation induced the local reduction of GO near the NCQDs, therefore forming multiple weak conductive filaments and demonstrating analog RS with a continuous conductance change. This analog RS enabled the close emulation of several essential synaptic plasticity behaviors; more importantly, the high linearity of the conductance change also facilitated the implementation of pattern recognition with high accuracy. Furthermore, the all-carbon memristive synapse can be transferred onto diverse substrates, showing good flexibility and 3D conformality. Memristive potentiation/depression was stably performed at 450 K, indicating the resistance of the synapse to high temperature. The photoreduction method provides a new path for the fabrication of all-carbon memristive synapses, which supports the development of wearable neuromorphic electronics.

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“…In general, the erosion rate of an ablation system depends on complex heat and mass balance at the surface [34]. This is influenced by conditions within the combustion gas temperature, pressure and composition, mechanical integrity, thermal conductivity of the char layer, and the volatilisation rate of pyrolytic gases.…”

Section: Ablative Performancementioning

confidence: 99%

Comparison of weight‐loss changes with different compositions of ZrB ₂ nanoparticles in carbon fabric–novolac composite at high temperature

Amirsardari

Aghdam

2017

Micro & Nano Letters

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To improve the thermal properties of novolac resin, zirconium diboride (ZrB 2) nanoparticles (ZNP) with different weight percentages (0, 2, 4 and 7) were introduced into novolac resin. ZrB 2 nanoparticles modified carbon-novolac (C-N) composites were used to determine and compare the ablation performance, thermal stresses and cracks, and mechanical properties of these modified polymer composites. Thermal protection via ablation was achieved through a self-regulating heat and mass transfer process involving an insulator with low thermal conductivity and concomitant formation of a hard char on the insulator surface after 160 s exposure to the combustion environment. Anti-oxidation mechanisms for the novolac resin modified with nanoparticles at different weight percentage were compared and discussed. Ablation performance shows a steady increase with the filler content until a maximum, at 4 wt% of ZNP, and then it decreases.

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Enhanced thermal resistance of GO/C/phenolic nanocomposite by introducing ZrB2 nanoparticles

Cited by 48 publications

References 34 publications

Mechanical, thermal, and ablative properties between graphene oxide and graphitic carbon nitride based carbon/phenolic composites: a comparative study

Mechanical, thermal, and ablative properties between graphene oxide and graphitic carbon nitride based carbon/phenolic composites: a comparative study

Photoreduced nanocomposites of graphene oxide/N-doped carbon dots toward all-carbon memristive synapses

Comparison of weight‐loss changes with different compositions of ZrB ₂ nanoparticles in carbon fabric–novolac composite at high temperature

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Enhanced thermal resistance of GO/C/phenolic nanocomposite by introducing ZrB2 nanoparticles

Cited by 48 publications

References 34 publications

Mechanical, thermal, and ablative properties between graphene oxide and graphitic carbon nitride based carbon/phenolic composites: a comparative study

Mechanical, thermal, and ablative properties between graphene oxide and graphitic carbon nitride based carbon/phenolic composites: a comparative study

Photoreduced nanocomposites of graphene oxide/N-doped carbon dots toward all-carbon memristive synapses

Comparison of weight‐loss changes with different compositions of ZrB 2 nanoparticles in carbon fabric–novolac composite at high temperature

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Comparison of weight‐loss changes with different compositions of ZrB ₂ nanoparticles in carbon fabric–novolac composite at high temperature