Abstract：
Anti/deicing coatings that combine active and passive methods can utilize various energy sources to achieve anti/deicing effects. However, poor photothermal or electrothermal performance and inevitable heat loss often reduce their anti/deicing efficiency. Herein, copper sulfide loaded activated biochar (AC@CuS) as photo/electric material, polydimethylsiloxane as hydrophobic component, thermally expandable microspheres as foaming agent, and an anti/deicing coating integrating thermal insulation, superhydrophobicity, photo/electrothermal effects was successfully constructed. Benefiting from the synergistic effect of superhydrophobicity and thermal insulation, the freezing time of water droplets on the coating surface is extended from 150 to 2140 s, showing excellent passive anti-icing performance. AC@CuS exhibits photo/electrothermal effects, and porous expanded microspheres reduce heat loss, which endows the coating with desirable photo/electrothermal conversion performance. Under the conditions of 0.2 W/cm2 electric power density (EPD) and 0.1 W/cm2 optical power density (OPD), the temperature of the coating increases from 24 to 96.4 and 113 °C, respectively. Interestingly, with a coheating of 0.05 W/cm2 weaker OPD and 0.05 W/cm2 lower EPD, the ice on the coating surface can be quickly melted in 2.5 min, showing synergistic deicing performance. In addition, the WCA of the prepared coating remains above 150° after mechanical damage, rain impact, UV irradiation, chemical corrosion, and high-temperature treatment, and good superhydrophobic durability ensures the anti/deicing durability of the coating.
摘要：
结合了主动和被动方法的防冰/除冰涂层可以利用各种能源来实现防冰/除冰效果。然而,差的光热或电热性能和不可避免的热损失通常会降低它们的防冰/除冰效率。在这里，硫化铜负载活性生物炭（AC@CuS）作为光电材料，聚二甲基硅氧烷作为疏水组分，可热膨胀的微球作为发泡剂，和集成隔热的防冰/除冰涂层，超疏水性,成功构建了光/电热效应。受益于超疏水性和隔热的协同作用，水滴在涂层表面的冻结时间从150s延长到2140s，表现出优异的被动防冰性能。AC@CuS具有光/电热效应，和多孔膨胀微球减少热损失，这赋予了涂层理想的光/电热转换性能。在0.2W/cm2电功率密度(EPD)和0.1W/cm2光功率密度(OPD)的条件下，涂层的温度从24增加到96.4和113°C，分别。有趣的是,共同加热0.05W/cm2较弱的OPD和0.05W/cm2较低的EPD，涂层表面的冰可以在2.5分钟内迅速融化，显示出协同除冰性能。此外,在机械损伤后,制备的涂层的WCA保持在150°以上,雨水影响,紫外线照射，化学腐蚀,和高温处理，和良好的超疏水耐久性确保涂层的抗/除冰耐久性。
