Abstract

Poor washing durability still poses a big challenge to the practical applications of flame-retardant fabrics. Herein, a facile and eco-friendly dip-coating approach is proposed to fabricate durable flame-retardant and superhydrophobic polyester–cotton (PTCO) fabrics. Self-assembled depositions of diethylenetriamine penta(methylene-phosphonic acid) (DTPMP) and ferric ion (Fe³⁺) were applied on PTCO fabrics through coordination interaction. Owing to the intumescent effect of DTPMP–Fe³⁺ complexes, DTPMP–Fe³⁺-coated fabric self-extinguished in the horizontal flame testing. Polydimethylsiloxane (PDMS) was then applied on DTPMP–Fe³⁺ complexes to impart the flame-retardant PTCO fabrics with superhydrophobicity (water contact angle: 155.6°) and self-cleaning properties. Especially, the washing durability of DTPMP–Fe³⁺-coated PTCO fabrics was improved by the modification of PDMS. The DT/Fe-8BL@PDMS sample still achieved self-extinguishing in the horizontal flame testing even after 12 laundering cycles.

Graphic abstract

Flame-retardant and superhydrophobic polyester–cotton fabrics are fabricated through the deposition of DTPMP–Fe³⁺ complexes and further modification of PDMS.

中文翻译：

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自组装的膦酸酯金属配合物，用于超疏水，耐用的阻燃涤棉织物

摘要

差的洗涤耐久性仍然对阻燃织物的实际应用提出了很大的挑战。本文提出了一种简便且环保的浸涂方法来制造耐用的阻燃性和超疏水性聚酯棉（PTCO）织物。通过配位相互作用将二亚乙基三胺五亚甲基膦酸（DTPMP）和三价铁离子（Fe ³⁺）的自组装沉积物应用于PTCO织物。由于DTPMP-Fe的膨胀效果³⁺络合物，DTPMP -铁³⁺包被在水平燃烧测试织物自行熄灭。然后将聚二甲基硅氧烷（PDMS）应用于DTPMP–Fe ³⁺配合物赋予阻燃性PTCO织物超疏水性（水接触角：155.6°）和自清洁性能。尤其是，通过修饰PDMS，改善了DTPMP-Fe ³⁺涂层的PTCO织物的耐洗性。DT / Fe-8BL @ PDMS样品即使在经过12个洗涤周期后，在水平火焰测试中仍能实现自熄。

图形摘要

阻燃和超疏水的涤棉织物是通过沉积DTPMP-Fe ³⁺复合物并进一步改性PDMS制成的。