A Transparent Photothermal-Enhanced Self-Lubricating Coating with Durable Icephobicity
Xue Jia1,2, Guangyu Zhang3, Zhaohui Su1,2
1State Key Laboratory of Polymer Science and Technology, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China.
Abstract:
In this work, a transparent coating with durable icephobicity fabricated from MXene and polydimethylsiloxane (PDMS) is presented. MXene nanosheets were assembled via the layer-by-layer technique into a transparent multilayer (nMXene, n is the number of MXene layers assembled) with photothermal conversion ability, onto which a cross-linked PDMS containing silicone oil (SO) was deposited, forming a composite coating with a PDMS slippery liquid-infused porous surface (SLIPS) and an nMXene photothermal underlayer, and the effects of n and the thickness of the PDMS-SO on the coating properties were studied. It was found that the 3MXene-PDMS-SO coating of 200 μm thickness exhibited a transmittance of 80% at 550 nm wavelength, and in a cold environment of -20 °C, the coating was able to increase the surface temperature by 7.4 °C under 1 sun illumination, significantly delaying ice formation and reducing the ice adhesion strength (τice) on the surface. Under these conditions, the surface maintained a low τice of ∼30 kPa after 100 icing/deicing cycles, showing durable icephobicity.
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