Thermostable, water-repellent, moisture-permeable Nomex nanofibrous membranes with a connected PTFE network for personal protective fabrics

IF 4.7 3区材料科学 Q2 CHEMISTRY, PHYSICAL

Colloid and Interface Science Communications Pub Date : 2024-03-23 DOI:10.1016/j.colcom.2024.100782

Xi Yu , Wenxiu Wu , Guiying Xu , Lihuan Wang , Hui Yu , Chi-wai Kan , Jianhua Yan , Xianfeng Wang , Ziqiong Wang , Yeer Wu , Lingrui Wen , Qiang Zhou

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Abstract

Water-repellent and moisture-permeable membranes are highly desirable for improving wearing comfort and protection; however, constructing thermostable fabrics with excellent moisture permeability and high resistance to water penetration in high-temperature personal protection remains a great challenge. Therefore, we fabricate Nomex nanofibrous membranes via electrospinning, and further perform dip-coating with polytetrafluoroethylene (PTFE) emulsion and hot-pressing for constructing connected PTFE network. The Nomex membranes possess hydrophobic PTFE networks and retain porous structures, improving their water repellent without influencing water vapor transmission. Furthermore, the membranes demonstrate prominent thermostability due to the synergistic effect of the high-temperature-resistant Nomex substrate and PTFE hydrophobic agent. Consequently, the Nomex/PTFE membranes exhibit prominent water-repellent and moisture-permeability with high hydrostatic pressure of 58 kPa and satisfactory water vapor transmission rate of 6008 g m⁻² d⁻¹, as well as remarkable thermostability to maintain structural stability under 300 °C, suggesting great promise as exceptional candidates for high-temperature personal protection and comfort management.

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具有连接聚四氟乙烯网络的耐热、防水、透湿 Nomex 纳米纤维膜，用于个人防护织物

憎水和透湿膜对于提高穿着舒适性和防护性来说是非常理想的；然而，在高温个人防护领域构建具有优异透湿性和高抗水渗透性的恒温织物仍然是一项巨大的挑战。因此，我们通过电纺丝技术制备了 Nomex 纳米纤维膜，并进一步用聚四氟乙烯（PTFE）乳液进行浸涂和热压，以构建连接的 PTFE 网络。Nomex 膜具有疏水性聚四氟乙烯网络，并保留了多孔结构，在不影响水蒸气传输的情况下提高了憎水性。此外，由于耐高温的 Nomex 基材和聚四氟乙烯疏水剂的协同作用，这种膜具有突出的耐热性。因此，Nomex/PTFE 膜具有出色的憎水性和透湿性，静水压力高达 58 kPa，水蒸气透过率为 6008 g m-2 d-1，令人满意；同时还具有显著的耐高温性，可在 300 °C 下保持结构稳定。

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来源期刊

Colloid and Interface Science Communications Materials Science-Materials Chemistry

CiteScore

9.40

自引率

6.70%

发文量

125

审稿时长

43 days

期刊介绍： Colloid and Interface Science Communications provides a forum for the highest visibility and rapid publication of short initial reports on new fundamental concepts, research findings, and topical applications at the forefront of the increasingly interdisciplinary area of colloid and interface science.