A superhydrophobic/electrothermal synergistically anti-icing strategy based on graphene composite

Surface icing tends to cause serious problems such as flash over and the following blackout accident. Although electrothermal system is the most widely used method, how to solve the re-freeze problem as the melted ice tend to stay on the surface is still a challenge. Here, we introduced a superhydro...

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Veröffentlicht in:Composites science and technology Jg. 198; S. 108307
Hauptverfasser: Wang, Peng, Yao, Tao, Li, Ziqiang, Wei, Weidong, Xie, Qing, Duan, Wei, Han, Huilong
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Barking Elsevier Ltd 29.09.2020
Elsevier BV
Schlagworte:
Abrasion
Anti-icing
Blackout
Carbon nanotubes
Composite materials
Deicing
Electric potential
Electrothermal
Embedded structures
Graphene
High temperature
Hydrophobic surfaces
Hydrophobicity
Ice accumulation
Ice formation
Ice removal
Nanoparticles
Sandpaper
Silicon dioxide
Structural hierarchy
Substrates
Superhydrophobic
Voltage
Anti-icing
Superhydrophobic
Electrothermal
Graphene
ISSN:0266-3538, 1879-1050
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Zusammenfassung:Surface icing tends to cause serious problems such as flash over and the following blackout accident. Although electrothermal system is the most widely used method, how to solve the re-freeze problem as the melted ice tend to stay on the surface is still a challenge. Here, we introduced a superhydrophobic/electrothermal synergistically anti-icing strategy based on graphene composite. The superhydrophobicity together with the high electrothermal efficiency let the graphene surface dry and clean in the simulated “glaze ice” condition. Although ice accretion would be formed on the surface when the DC voltage was off, the ice could be rapidly removed within 70 s after applying the voltage of 50 V. To enhance the durability of superhydrophobic surface, the hierarchical structure was constructed by the tri-scale nature of inorganic fillers (graphene, carbon nanotubes and silica nanoparticles). Then the hierarchical structure was partially embedded into the substrate by a dissolution and resolidification method. The coupling effect of partially-embedded structure and hierarchical structure led to the superior robustness, which could withstand sandpaper abrasion (500 g load, 8.00 m), the attack of various corrosive liquids, and low/high temperature treatment without losing superhydrophobicity. More remarkably, this graphene superhydrophobic composite retained deicing property even after 30 icing/deicing cycles.
Bibliographie:ObjectType-Article-1
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ISSN:0266-3538
1879-1050
DOI:10.1016/j.compscitech.2020.108307