Robust superhydrophobic materials providing protections from harsh weather events such as hurricanes, high temperatures, and humid/frigid conditions have proven challenging to achieve. Here, we report a porous bulk nanocomposite comprising carbon nanotube (CNT)-reinforced polytetrafluoroethylene (PTFE). The nanocomposites are prepared using a templated approach by infusing a CNT/PTFE dispersion into a sponge followed by thermal annealing and decomposition of the sponge template. Importantly, an excess accretion of CNT/PFFE particle mixture on the sponge resulted in nanocomposites with unique and hierarchical porous microstructure, featuring nanochannels near the surface connected to microscale pores inside. The superhydrophobic nanocomposite could resist liquid jets impacting at a velocity of ∼85.4 m s⁻¹ (Weber number of ∼202,588) and exhibits excellent high-temperature resistance as well as mechanochemical robustness. The porous nanocomposites display excellent icephobicity both with and without infusion with polydimethylsiloxane/silicone oil. These properties should facilitate exploitation as stiff/strong structural polymeric foams used in a variety of fields.

坚固的超疏水材料可以抵御飓风、高温和潮湿/寒冷条件等恶劣天气事件，已被证明具有挑战性。在这里，我们报告了一种包含碳纳米管 (CNT) 增强聚四氟乙烯 (PTFE) 的多孔块状纳米复合材料。通过将 CNT/PTFE 分散体注入海绵，然后对海绵模板进行热退火和分解，使用模板化方法制备纳米复合材料。重要的是，CNT/PFFE 颗粒混合物在海绵上的过量堆积导致纳米复合材料具有独特和分层的多孔微观结构，其特征是靠近表面的纳米通道与内部的微孔相连。超疏水纳米复合材料可以抵抗速度为~85.4 m s ^{-1的液体射流冲击}（韦伯数 ~202,588）并表现出优异的耐高温性和机械化学稳定性。无论是否注入聚二甲基硅氧烷/硅油，多孔纳米复合材料都显示出优异的疏冰性。这些特性应该有助于作为用于各种领域的硬/强结构聚合物泡沫的开发。