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Inexpensive and non-toxic water repellent coatings comprising SiO2 nanoparticles and long chain fatty acids

机译：包含SiO2纳米颗粒和长链脂肪酸的廉价且无毒的防水涂料

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摘要

Special wettability durable coatings, with average water contact angles exceeding 140°, have been fabricated utilising functionalised hydrophobic-SiO _(2) (H-SiO _(2) ) particles embedded in fatty acids. The inexpensive and non-toxic H-SiO _(2) particles imparted delicate lotus leaf inspired hierarchical surface nano-morphologies while the fatty acid modification afforded a suitable drop in surface energy. Comparison studies were carried out to explore the effects of fatty acid chain length and pipette as opposed to spray coating deposition methods on the coatings hydrophobicity. It was determined that the longest chain length fatty acid coatings showed enhanced hydrophobic properties due to their extended hydrophobic alkyl chain. A pipette deposited suspension containing H-SiO _(2) nanoparticles and octadecanoic acid generated a coating with the most favourable average water contact and tilting angles of 142 ± 6° and 16 ± 2° respectively.
机译：使用嵌入脂肪酸中的官能化疏水性SiO_（2）（H-SiO_（2））颗粒制造了特殊的可湿性耐久涂层，平均水接触角超过140°。廉价且无毒的H-SiO_（2）粒子赋予了精致的荷叶启发的分层表面纳米形态，而脂肪酸改性则提供了适当的表面能下降。进行了比较研究，以探索脂肪酸链长和移液器相对于喷涂沉积方法对涂料疏水性的影响。已确定最长链长的脂肪酸涂层由于其延伸的疏水性烷基链而显示出增强的疏水性。包含H-SiO_（2）纳米颗粒和十八碳烯酸的移液器悬浮液产生的涂层具有最有利的平均水接触和分别为142±6°和16±2°的倾斜角。

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