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首页> 外文期刊>Applied Surface Science >A fluorine-free method for fabricating multifunctional durable superhydrophobic fabrics
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A fluorine-free method for fabricating multifunctional durable superhydrophobic fabrics

机译：一种无氟的多功能耐用超疏水织物的制造方法

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摘要

In this study, fly ash (FA), which is a waste product of common flue gas, was used to effectively fabricate multifunctional superhydrophobic surfaces. FA was first coated with a TiO2 shell layer to form a core (FA)-shell (TiO2) structure via charge adsorption. FA-TiO2 was then grafted with polydimethylsiloxane (PDMS) molecules to form FA-TiO2-PDMS particles, which exhibited superhydrophobicity. The PDMS molecules were grafted firmly on the TiO2 shell through covalent bonds, therefore endowing the particles a series of durable properties. The superhydrophobic FA-TiO2-PDMS particles mixed with PDMS could form homogenous coating solution, which was coated onto fabrics to obtain superhydrophobic surfaces. The resulting superhydrophobic fabric exhibited the "Lotus-effect" and excellent self-cleaning ability. It also showed excellent photocatalysis ability that could repeatedly photodegrade various oils and dyes. Moreover, the coated fabric showed durable and stable superhydrophobicity, which could withstand repeated abrasion treatments, recycled peeled tests using an adhesive tape, long-duration boiling-water immersion, and recycled solvent immersion. In addition, the surface exhibited strong self-healed superhydrophobicity after a simple heat treatment even after being repeatedly treated by plasma or immersed into a strong alkali/acid solution for 8 h. The superhydrophobic fabrics also achieved self-quenched fire-retardance and could efficiently separate various oil-water mixtures.
机译：在这项研究中，粉煤灰（FA）是普通烟道气的废品，被用于有效地制造多功能超疏水表面。首先用TiO2壳层涂覆FA，以通过电荷吸附形成核（FA）-壳（TiO2）结构。然后将FA-TiO2与聚二甲基硅氧烷（PDMS）分子接枝，形成具有超疏水性的​​FA-TiO2-PDMS颗粒。 PDMS分子通过共价键牢固地接枝在TiO2壳上，因此赋予了颗粒一系列持久的性能。与PDMS混合的超疏水FA-TiO2-PDMS颗粒可形成均匀的涂层溶液，然后将其涂布到织物上以获得超疏水的表面。所得的超疏水性织物表现出“莲花效应”和优异的自清洁能力。它还具有出色的光催化能力，可以反复光降解各种油和染料。此外，该涂层织物显示出持久而稳定的超疏水性，可以经受反复的磨损处理，使用胶带进行的循环剥离测试，长时间的沸水浸泡和循环的溶剂浸泡。另外，表面经过简单的热处理后仍表现出很强的自修复超疏水性，即使经过反复等离子处理或将其浸入强碱/酸溶液中8小时也是如此。超疏水性织物还实现了自熄火阻燃性，并且可以有效地分离各种油水混合物。

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  • 来源
    《Applied Surface Science》 |2020年第1期|144621.1-144621.12|共12页
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  • 作者单位

    Hebei Univ Coll Chem & Environm Sci Baoding 071002 Hebei Peoples R China|Hebei Univ Key Lab Analyt Sci & Technol Hebei Prov Engn Technol Res Ctr Flame Retardant Mat & Proc T Baoding 071002 Peoples R China;

    Hebei Univ Coll Chem & Environm Sci Baoding 071002 Hebei Peoples R China;

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  • 正文语种 eng
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  • 关键词

    Fly ash; PDMS grafting; Superhydrophobic; Multifunctional; Durable;

    机译：粉煤灰;PDMS接枝;超疏水多功能;耐用;

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