Thermochromic Phase‐Change Slippery Silicone Rubber for Photothermal Anti‐Icing and Deicing

Surface icing severely threatens equipment safety in aerospace, energy, and transport. Here, a thermochromic phase‐change slippery silicone rubber (TPCS) is designed by integrating a flexible silicone matrix, regular surface microstructures, a porous paraffin network, thermochromic powders, and phase‐change paraffin, achieving synergistic temperature responsiveness, interfacial lubrication, and photothermal anti‐icing and deicing. TPCS appears black to enhance light absorption, with solid paraffin stored in pores. Upon heating or light, paraffin melts to form a lubricating layer, reducing ice/substrate adhesion. Wettability tests show a sliding angle of 0.9 ± 0.1°, demonstrating excellent droplet mobility even without superhydrophobicity. At −20°C, droplet freezing time on TPCS reaches 1542 ± 21 s (∼3.9 times that of pristine silicone rubber), and ice adhesion strength is only 15.92 ± 3.2 kPa, far lower than pristine silicone rubber and thermochromic porous silicone rubber. Under 0.05 W/cm 2 illumination, ice columns slide off rapidly, confirming that the black surface and melted paraffin synergistically reduce adhesion and friction. These results demonstrate an integrated thermal‐responsive and lubricating strategy for flexible anti‐icing and deicing applications.