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Designing durable icephobic surfaces
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DOI：10.1126/sciadv.1501496.png)
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摘要
En 中文
Ice accretion has a negative impact on critical infrastructure, as well as a range of commercial and residential activities. Icephobic surfaces are defined by an ice adhesion strength tau(ice) < 100 kPa. However, the passive removal of ice requires much lower values of tau(ice), such as on airplane wings or power lines (tau(ice) < 20 kPa). Such low tau(ice) values are scarcely reported, and robust coatings that maintain these low values have not been reported previously. We show that, irrespective of material chemistry, by tailoring the cross-link density of different elastomeric coatings and by enabling interfacial slippage, it is possible to systematically design coatings with extremely low ice adhesion (tau(ice) < 0.2 kPa). These newfound mechanisms allow for the rational design of icephobic coatings with virtually any desired ice adhesion strength. By using these mechanisms, we fabricate extremely durable coatings that maintain tau(ice) < 10 kPa after severe mechanical abrasion, acid/base exposure, 100 icing/deicing cycles, thermal cycling, accelerated corrosion, and exposure to Michigan wintery conditions over several months.
Keyword:
MOLECULAR-WEIGHT
PDMS NETWORKS
ICE
ADHESION
FRICTION
COATINGS
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IF:
12.5
论文数:
2.1W
被引数:
18.1W
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