Pipeline transportation suffers from high-viscosity crude oil, wax-deposition, and hydrates blockage. Superamphiphobic surfaces with excellent repellency to various liquids have been proposed to solve those problems. However, they may lose superamphiphobicity once their micro-nanostructures were wetted by condensate droplets or hot fluids that require heat to improve liquidity. Here, we report a superamphiphobic P(HFIO)@SiO 2 @SS with a high aperture ratio pore structures (denoted as the PSSH) to resist water/oil-droplet-condensation and repel hot fluids. Its interconnected high aperture ratio pore structures and ultralow surface energy fluorinated side chains enhance the penetration resistance of droplets to micro-nanostructures and the driving force for condensate droplets to spontaneously roll away from its surface. Besides, it prevents crude oil (25 °C−72 °C) from sticking to its surface (25 °C), as well as molten paraffin droplets (104 °C) from adhering to the surface (104 °C), increasing the flow rate of 4–35 times. In addition, the PSSH reduces adhesive force to hydrates (3.2 °C) and wax (25 °C) by 92.1% and 89.4%, respectively. The PSSH demonstrates the great potential in handling pipeline blockage and improving the transport efficiency of fluids, offering alternative strategy to prepare superamphiphobic surfaces for oil and gas transportation, heat transfer, and other applications.
In this study, we demonstrated a multi-layer fluorine-free superhydrophobic coating with anti-condensation and anti-biofouling properties. Polyethylene terephthalate was introduced to fix the candle soot layers. The coating exhibits exceptional superhydrophobicity due to the formation of nanocarbon chains resulting from incomplete combustion of the candle. The obtained superhydrophobic coatings exhibited enhanced anti-condensation and anti-algae properties. The coatings presented suppressed the nucleation and growth of condensates at a subcooled temperature of 8 °C. To examine the anti-biofouling property of the surface, the as-prepared samples were submerged in impurity water for 7 days. The Scenedesmus obliquus failed to adhere and proliferate on the coating surface during the 7-day continuous immersion. The developed coating holds promise to provide a low cost, high-throughput, faster way to develop function coatings for industry applications.
危险品化学品经营许可证（带存储）