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A simple and effective way to fabricate mechanical robust superhydrophobic surfaces

机译:一种制造机械稳健的超疏水表面的简单有效方法

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摘要

A simple, inexpensive and effective method is developed to fabricate mechanical robust superhydrophobic (SH) surfaces based on particle-filled silicone rubber (SR) composites. A large variety of particles with different features, such as copper, SiO2, BaTiO3 (BT), carbon black (CB), and polyvinylidene fluoride (PVDF) can be used to prepare the SH surfaces based on SR composites. The particles were spread on the un-cured SR solution (in n-hexane) surface using a sieve. The excessive particles were removed using ultrasonic washing after the SR matrix was completely cured. Surface roughness is formed due to the accumulation of particles, and the SR matrix provides the required low surface energy. Various SH surfaces based on particle-filled SR composites are obtained with high water contact angle (CA, >160 degrees) and low water sliding angle (SA, <10 degrees). In addition, besides the superhydrophobicity, the surface color, transparence, electric conductivity and other properties can also be achieved by carefully selecting appropriate particles. All of the particles are commercial and used as received without any modification. Furthermore, the mechanical stabilities of the SH surfaces are systematically studied using various possible mechanical actions. The results indicate that the SH surface is mechanically robust against sandpaper abrasion (32.5 kPa, 50 cycles), finger touch, brushing and scratching, as well as high-pressure water impacting (0.12 MPa). The SH surfaces based on particle-filled SR composites can be fabricated at large scale without using any expensive materials and special equipment. Therefore, the SH surface could provide a candidate for practical self-cleaning applications.
机译:开发了一种简单,廉价且有效的方法,用于制造基于颗粒填充硅橡胶(SR)复合材料的机械稳健的超疏水(SH)表面。种类繁多的不同的功能,如铜,二氧化硅,钛酸钡(BT),炭黑(CB),和聚偏氟乙烯(PVDF)的颗粒可用于制备SH表面基于SR的复合材料。使用筛子在未固化的Sr溶液(在正己烷)表面上涂布颗粒。在Sr基质完全固化后,使用超声波洗涤除去过量的颗粒。由于颗粒的累积而形成表面粗糙度,并且SR基质提供所需的低表面能。基于粒子填充的SR复合材料的各种SH表面具有高水接触角(CA,> 160度)和低排水角(SA,<10度)。另外,除了超疏水性,还可以通过仔细选择合适的颗粒来实现表面颜色,透明度,导电性和其他性能。所有颗粒都是商业的,并在没有任何修改的情况下使用。此外,使用各种可能的机械动作来系统地研究SH表面的机械稳定性。结果表明,SH表面对砂纸磨损(32.5kPa,50个循环),手指触摸,刷涂和刮擦以及高压水影响(0.12MPa)。基于颗粒填充的SR复合材料的SH表面可以大规模制造而不使用任何昂贵的材料和特殊设备。因此,SH表面可以为实际自清洁应用提供候选者。

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  • 来源
    《RSC Advances》 |2016年第34期|共7页
  • 作者单位

    Nanchang Hangkong Univ Sch Mat Sci &

    Engn Nanchang 330063 Peoples R China;

    Nanchang Hangkong Univ Sch Mat Sci &

    Engn Nanchang 330063 Peoples R China;

    Nanchang Hangkong Univ Sch Mat Sci &

    Engn Nanchang 330063 Peoples R China;

    Nanchang Hangkong Univ Sch Mat Sci &

    Engn Nanchang 330063 Peoples R China;

    Nanchang Hangkong Univ Sch Mat Sci &

    Engn Nanchang 330063 Peoples R China;

    Jingdezhen Ceram Inst Sch Mech &

    Elect Engn Jingdezhen 333403 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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