Megregian Catherine M, Koutsos Vasileios, Callanan Anthony, Blackford Jane R
School of Engineering, Institute for Materials and Processes, The University of Edinburgh, Sanderson Building, King's Buildings, Edinburgh EH9 3FB, U.K.
School of Engineering, Institute for Bioengineering, The University of Edinburgh, Faraday Building, King's Buildings, Edinburgh EH9 3DW, U.K.
ACS Omega. 2025 Apr 8;10(15):15681-15696. doi: 10.1021/acsomega.5c01139. eCollection 2025 Apr 22.
Passive anti-icing coatings are a promising solution to the dangers of ice accumulation on surfaces. We studied plain polydimethylsiloxane (PDMS) and (commercially available) NuSil R-2180 coatings alongside PDMS coatings infused with two molecular weights and percentages of silicone oil. The icephobicity of the coatings was measured via ice adhesion strength and freezing time. 100 repeated deicing cycles were performed, which showed the oil-infused coatings had consistently lower ice adhesion strengths (∼10-20 kPa) than nonoil-infused coatings (∼100 kPa). The nonoil-infused coatings also showed increasing instances of exceptionally high ice adhesion strengths (>650 kPa), reducing the reliability of their icephobicity long-term. Oil infusion did not negatively affect the freezing time of the coatings, and despite decreases in freezing time after 100 deicing cycles, the coatings maintained an improvement compared to uncoated aluminum. Analysis showed adhesion strength is more strongly affected by shear modulus than coating thickness, work of adhesion, or static water contact angle. Wear from the deicing cycles was minimal. Any wear that was present did not significantly affect icephobicity. Oil infusion of elastomer coatings reduces ice accumulation on surfaces and provides a more reliable long-term solution for anti-icing applications.
被动防冰涂层是解决表面结冰危险的一种很有前景的方法。我们研究了普通聚二甲基硅氧烷（PDMS）和（市售的）NuSil R - 2180涂层，以及注入了两种分子量和百分比硅油的PDMS涂层。通过冰附着力强度和冻结时间来测量涂层的憎冰性。进行了100次重复除冰循环，结果表明注入油的涂层的冰附着力强度（约10 - 20 kPa）始终低于未注入油的涂层（约100 kPa）。未注入油的涂层还出现了极高冰附着力强度（>650 kPa）的情况越来越多，这降低了其长期憎冰性的可靠性。注入油对涂层的冻结时间没有负面影响，并且尽管在100次除冰循环后冻结时间有所减少，但与未涂层的铝相比，涂层仍保持着改善。分析表明，附着力强度受剪切模量的影响比涂层厚度、粘附功或静态水接触角更大。除冰循环造成的磨损极小。任何存在的磨损都没有显著影响憎冰性。向弹性体涂层注入油可减少表面的冰积聚，并为防冰应用提供更可靠的长期解决方案。
