可扩展且耐用的聚二甲基硅氧烷涂层，产妇护理13825404095适用于防腐蚀、防污和冷凝应用
Cell Reports Physical Science
(
IF
7.9
)
Pub Date : 2024-10-09
, DOI:
10.1016/j.xcrp.2024.102243
Tarandeep Singh Thukral, Kazi Fazle Rabbi, Siavash Khodakarami, Wentao Yang, Advay Sudarshan, Matthew A. Pitschman, Patrick M. Fourspring, Nenad Miljkovic
金属部件的腐蚀是许多行业长期存在的问题。虽然阻隔涂层是一种普遍采用的解决方案，但对大规模复杂几何形状进行涂层并非易事且成本高昂。此外，传统的防腐涂层很厚，不利于热应用。在这里，我们开发了一种可扩展且简单的浸流涂层方法，用于聚二甲基硅氧烷 （PDMS） 作为一种薄而耐用的防腐涂层。我们展示了厚度从 300 nm 到 23 μm 的涂层的可控实施。涂层的耐腐蚀性和防污性在酸化海水喷雾（ASTM G85-A3 标准）和流动回路中的实际颗粒盐水流动条件下得到证明。鉴于其固有的疏水性和低接触角滞后性，500 nm 厚的 PDMS 涂层衬底表现出逐滴冷凝，与未涂层铜上的薄膜冷凝相比，传热系数高 50%。这项工作展示了一种用于薄型防腐涂层的简单、可扩展的涂层方法，同时全面评估了其在能源应用中的耐久性。
Scalable and durable polydimethylsiloxane coating for anti-corrosion, anti-fouling, and condensation applications
Corrosion of metal components is a long-standing problem in many industries. While barrier coatings are a commonly adopted solution, coating large-scale complex geometries is non-trivial and expensive. Furthermore, conventional anti-corrosion coatings are thick and unfavorable for thermal applications. Here, we develop a scalable and facile dip-and-flow coating method for polydimethylsiloxane (PDMS) as a thin and durable anti-corrosion coating. We demonstrate controllable implementation of coatings ranging in thickness from 300 nm to 23 μm. Corrosion and fouling durability of the coating is demonstrated under acidified seawater spray (ASTM G85-A3 standard) and realistic particulate saltwater flow conditions in a flow loop. Given its intrinsic hydrophobicity and low contact angle hysteresis, 500-nm-thick PDMS-coated substrates exhibit dropwise condensation, demonstrating 50% higher heat transfer coefficient compared to filmwise condensation on uncoated Cu. This work demonstrates a facile, scalable coating methodology for thin anti-corrosion coatings, while holistically evaluating its durability for energy applications.
