作者：Peng Qi, Shuheng Wang, Wenjia Wang, Jun Sun, Hongfu Yuan, Sheng Zhang
关键字：用于棉织物的高阻燃超疏水壳聚糖/多硼酸钠基微纳米涂层
论文来源：期刊
发表时间：2022年

  In this work, a sustainable flame retardant and superhydrophobic cotton fabric was prepared by a two-step process: the cotton fabric was firstly treated with a chitosan/sodium polyborate polyelectrolyte complex water solution to obtain a flame retardant layer, and then treated with a polydimethylsiloxane (PDMS) tetrahydrofuran solution to construct a superhydrophobic layer. The phase-separated chitosan with a micro-nano roughness structure was covered by PDMS, which synergistically improved the hydrophobicity of the cotton fabric. The flammability evaluation indicated that the limiting oxygen index value of the treated fabric was increased to 40.0% from 18.2%, the peak of heat release rate was reduced by 63.8%, and the total heat release was reduced by 57.6% compared with that of the control sample. The enhanced flame retardancy was attributed to the excellent charring ability in the condensed phase. The treated fabric also showed anti-sticking, self-cleaning, and oil/water-separating properties. This coating treatment without any F, Cl, Br, P elements involved is regarded as a clean methodology for producing flame retardant and superhydrophobic cotton fabrics.

在这项工作中，通过两步工艺制备了一种可持续的阻燃超疏水棉织物：首先用壳聚糖/聚硼酸钠聚电解质复合水溶液处理棉织物以获得阻燃层，然后用聚二甲基硅氧烷处理(PDMS) 四氢呋喃溶液构建超疏水层。具有微纳米粗糙结构的相分离壳聚糖被PDMS覆盖，协同提高了棉织物的疏水性。阻燃性评价表明，处理后织物的极限氧指数值由18.2%提高到40.0%，放热率峰值降低63.8%，总放热量比处理后织物降低57.6%。对照样品。增强的阻燃性归因于凝聚相中优异的炭化能力。处理后的织物还显示出防粘、自清洁和油/水分离性能。这种不含任何 F、Cl、Br、P 元素的涂层处理被认为是生产阻燃和超疏水棉织物的清洁方法。