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首页> 外文期刊>Journal of Applied Polymer Science >Preparation and study of stable fluorine-free superhydrophobicity of cotton fibers
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Preparation and study of stable fluorine-free superhydrophobicity of cotton fibers

机译：棉纤维稳定的无氟超水性的制备与研究

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摘要

This paper proposes a method of directly modifying the surface of cotton fiber to achieve super-hydrophobic properties. The process was directly utilized the long-chain alkyl siloxane and the nano-SiO2 modified cotton cloth, which was simple to operate, low in cost and environmentally friendly. This study discussed the influence of solvent ratio, reactant content and ammonia content on hydrophobicity. The solvent ratio had the greatest influence, and the maximum water contact angle (CA) changes were70 degrees +/- 1 degrees. The maximum water CA of the superhydrophobic cotton fabric prepared after process selection was 162 +/- 1.5 degrees; it had good acid, alkali and salt resistance. After 24 h in a solution with a pH of 1-14, CA remained almost unchanged; After 144 h in a 3.5% salt solution, CA stabilized above 132 degrees; it had self-cleaning properties; it had good selective adsorption performance, which can quickly separate oil and water; it had good mechanical stability. After 300 times abrasion of sandpaper, which still shows hydrophobic properties.
机译：本文提出了一种直接对棉纤维表面进行改性以获得超疏水性能的方法。该工艺直接利用长链烷基硅氧烷和纳米二氧化硅改性棉布，操作简单，成本低，环境友好。本研究探讨了溶剂比、反应物含量和氨含量对疏水性的影响。溶剂比的影响最大，最大水接触角（CA）变化为70°+/-1°。工艺选择后制备的超疏水棉织物的最大水CA为162+/-1.5度；它具有良好的耐酸、耐碱、耐盐性。在pH值为1-14的溶液中24小时后，钙几乎保持不变；在3.5%盐溶液中144小时后，钙稳定在132度以上；它具有自清洁性能；具有良好的选择性吸附性能，能快速分离油水；它具有良好的机械稳定性。经过300次砂纸磨损后，仍然显示出疏水性。

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