Fluoroalkyl-silane-modified 3D graphene foam with improved Joule-heating effects and high hydrophobicity-derived anti-icing properties

Zhang, Qiangqiang; Zhang, Baoqiang; Yu, Yikang; Zhao, Keren; He, Pingge

doi:10.1007/s10853-017-1536-1

Cited by 15 publications

(15 citation statements)

References 26 publications

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“…Then, the compacted GHB scaffold recovers back to its original porous status, indicating an excellent robustness for structure undergoing a large-scale deformation. Comparatively, as the CP composite coated on GF template after the mineralizing process, the as-obtained GHB sample exhibits significantly increased strength and toughness with effective Young's modulus of 0.933 MPa, which is over two orders higher than that of GF (~7.5 kPa) [16]. Moreover, as the promising bioscaffolds for cell attaching and creeping, the GHBs are required to not only possess a good mechanical elasticity, but also have tough capability maintaining structural stability during cultivation-transfer processes.…”

Section: Mechanially Robust Performancementioning

confidence: 98%

“…However, there is still a challenge in the preparation of HCP on the expected bioscaffold with controlled morphology and robust structure. Many publications have reported 3D pore-shaped composites by mixing organic or inorganic polymeric materials with CP [15,16]. Due to complex preparation processes of these methods, it is difficult to control the uniformity of the HCP structure.…”

Section: Introductionmentioning

confidence: 99%

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Mechanically Robust 3D Graphene–Hydroxyapatite Hybrid Bioscaffolds with Enhanced Osteoconductive and Biocompatible Performance

et al. 2018

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In this paper, we describe three-dimensional (3D) hierarchical graphene-hydroxyapatite hybrid bioscaffolds (GHBs) with a calcium phosphate salt electrochemically deposited onto the framework of graphene foam (GF). The morphology of the hydroxyapatite (HA) coverage over GF was controlled by the deposition conditions, including temperature and voltage. The HA obtained at the higher temperature demonstrates the more uniformly distributed crystal grain with the smaller size. The as-prepared GHBs show a high elasticity with recoverable compressive strain up to 80%, and significantly enhanced strength with Young's modulus up to 0.933 MPa compared with that of pure GF template (~7.5 kPa). Moreover, co-culture with MC3T3-E1 cells reveals that the GHBs can more effectively promote the proliferation of MC3T3-E1 osteoblasts with good biocompatibility than pure GF and the control group. The superior performance of GHBs suggests their promising applications as multifunctional materials for the repair and regeneration of bone defects.

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Section: Mechanially Robust Performancementioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Mechanically Robust 3D Graphene–Hydroxyapatite Hybrid Bioscaffolds with Enhanced Osteoconductive and Biocompatible Performance

et al. 2018

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“…It is worth noting that the abundant porous structure is conducive to the heat exchange with the environment in the electric heating process [21][22][23].…”

Section: Sem Morphology Analysismentioning

confidence: 99%

“…Recently, related studies reported various electrothermal composites made of CNTs or GP, which can be used for medical infusion apparatus [ 10 ], deicing [ 11 , 12 ], defrosting and defogging [ 13 , 14 , 15 ], repairing and self-curing resin [ 16 ], and other fields [ 17 , 18 , 19 , 20 ]. As example, a fluoroalkyl-silane-modified three-dimensional graphene foam composite (FS-GF) with a porous structure was fabricated, which can be used in the Joule heating mesh for airflow; the prepared FS-GF also demonstrated rapid heating rate, high conversion efficiency, and uniform temperature distribution [ 21 ]. Moreover, a porous aramid nanofiber/CNT electrothermal hybrid aerogel film coated with a layer of fluorocarbon resin exhibited fast heating speed and reliable cycle stability [ 22 ].…”

Section: Introductionmentioning

confidence: 99%

A Nanofibrillated Cellulose-Based Electrothermal Aerogel Constructed with Carbon Nanotubes and Graphene

Zhuo¹,

Cao²,

Li³

et al. 2020

Molecules

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Nanofibrillated cellulose (NFC) as an environmentally friendly substrate material has superiority for flexible electrothermal composite, while there is currently no research on porous NFC based electrothermal aerogel. Therefore, this work used NFC as a skeleton, combined with multi-walled carbon nanotubes (MWCNTs) and graphene (GP), to prepare NFC/MWCNTs/GP aerogel (CCGA) via a simple and economic freeze-drying method. The electrothermal CCGA was finally assembled after connecting CCGA with electrodes. The results show that when the concentration of the NFC/MWCNTs/GP suspension was 5 mg mL−1 and NFC amount was 80 wt.%, the maximum steady-state temperature rise of electrothermal CCGA at 3000 W m−2 and 2000 W m−2 was of about 62.0 °C and 40.4 °C, respectively. The resistance change rate of the CCGA was nearly 15% at the concentration of 7 mg mL−1 under the power density of 2000 W m−2. The formed three-dimensional porous structure is conducive to the heat exchange. Consequently, the electrothermal CCGA can be used as a potential lightweight substrate for efficient electrothermal devices.

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“…Graphene, CNT, and CCB are three typical carbon family materials, which are not only easy to prepare but also rich in raw materials. Graphene can be used as conductive filler due to its extremely high electrical conductivity and thermal electrical conductivity (5000 W/m/K). These excellent properties endow graphene‐prepared electrothermal films with extremely low sheet resistance and extremely fast temperature response .…”

Section: Introductionmentioning

confidence: 99%

Rapid electrothermal response and excellent flame retardancy of ethylene‐vinyl acetate electrothermal film

Tian

Zhang

et al. 2020

Polymers for Advanced Techs

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In this study, high electrical conductivity and flame retardant electrothermal ethylene-vinyl acetate (EVA) films were fabricated by using carbon nanotubeswrapped ammonium polyphosphate (CAPP) and conductive carbon black (CCB).CAPP was used as a synergistic conductive filler and flame retardant to improve the electrical conductivity and fire safety of the electrothermal film at the same time. Besides, the heat release rate (HRR) and the total heat release (THR) of EVA-5 decreased about 81.5% and 57.3% compared with those of pure EVA film, respectively. Moreover, by incorporating a small amount of CAPP, EVA-5 can reach up to V-0 rating with an limiting oxygen index (LOI) value of 31%. EVA film fabricated by CCB and CAPP as conductive material exhibited almost 10 times increment on electrical conductivity than that of same content for CCB alone.And time vs temperature profiles of EVA-5 showed a stable trend over 3600 seconds without any offset at a given applied voltage of 15 V. Moreover, its excellent cycle heating performance indicated that the electrothermal film can be recycled, which meets the requirements of sustainable development. In a word, this novel strategy provides a simple and effective way to obtain a high conductive and fire safety electrothermal film. K E Y W O R D S ammonium polyphosphate, carbon nanotubes, conductive carbon black, electrothermal film, flame retardant

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Fluoroalkyl-silane-modified 3D graphene foam with improved Joule-heating effects and high hydrophobicity-derived anti-icing properties

Cited by 15 publications

References 26 publications

Mechanically Robust 3D Graphene–Hydroxyapatite Hybrid Bioscaffolds with Enhanced Osteoconductive and Biocompatible Performance

Mechanically Robust 3D Graphene–Hydroxyapatite Hybrid Bioscaffolds with Enhanced Osteoconductive and Biocompatible Performance

A Nanofibrillated Cellulose-Based Electrothermal Aerogel Constructed with Carbon Nanotubes and Graphene

Rapid electrothermal response and excellent flame retardancy of ethylene‐vinyl acetate electrothermal film

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