Designing durable icephobic surfaces.
Designing durable icephobic surfaces.
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DOI：
10.1126/sciadv.1501496
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发表时间：
2016-03
期刊：
影响因子：
13.6
通讯作者：
Tuteja A
中科院分区：
文献类型：
--
作者：
Golovin K;Kobaku SP;Lee DH;DiLoreto ET;Mabry JM;Tuteja A
研究人员成功设计出具有极低冰粘附力的材料。积冰对关键基础设施以及一系列商业和居民活动产生负面影响。疏冰表面由冰粘附强度τice < 100 kPa定义。然而，被动除冰需要低得多的τice值，例如在飞机机翼或电力线上（τice < 20 kPa）。如此低的τice值几乎没有报道，并且之前也没有报道过保持这些低值的坚固涂层。我们表明，无论材料的化学性质如何，通过调整不同弹性体涂层的交联密度和实现界面滑移，可以系统地设计具有极低冰粘附力（τice < 0.2 kPa）的涂层。这些新发现的机制允许具有几乎任何期望的冰粘附强度的疏冰涂层的合理设计。通过使用这些机制，我们制造了极其耐用的涂层，在严重的机械磨损、酸/碱暴露、100次结冰/除冰循环、热循环、加速腐蚀和暴露于密歇根州冬季条件几个月后仍保持τice < 10 kPa。
Researchers successfully design materials with extremely low ice adhesion. 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 τice < 100 kPa. However, the passive removal of ice requires much lower values of τice, such as on airplane wings or power lines (τice < 20 kPa). Such low τice 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 (τice < 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 τice < 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.