Abstract

With the development of modern engineering technology, the development of high-performance and multifunctional polymer materials has been promoted. In this work, a novel nanohybrid based on chitosan engraved zinc and iron mixed oxyhydroxide at the presence of halloysite nanotubes (HNTs) as the carrier, followed by surface capping with stearic acid to obtain super-hydrophobic HNT@CSZFMOH nanofiller. The as-obtained HNT@CSZFMOH nanofiller was incorporated into epoxy resin (EP) matrix. With the addition of 3 wt.% HNT@CSZFMOH, the peak heat release rate and peak smoke production of the EP nanocomposite decreased by 35% and 32%, respectively. This excellent flame retardancy is attributed to that the enhanced physical barrier derived from HNT@CSZFMOH, and the dense, highly graphitized char layer formed by catalytic charring of ultrafine FeOOH and ZnOOH nanoparticles. Meanwhile, the nanohybrid imparted outstanding hydrophobicity to the hydrophilic substrate EP with the water contact angle (CA) of 159°. EP-matrix nanocomposite exhibited desired self-cleaning performance as well as good resistance against corrosive liquids (acid and alkaline solutions) and ultraviolet irradiation. The present approach, with simple procedures and desired environmental acceptance, could provide feasible pathway to fabricating multifunctional polymer–matrix composites.

Graphic Abstract

中文翻译：

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非氟化物修饰的埃洛石纳米管基杂化物：获得超疏水性和改善环氧树脂阻燃性的潜力

摘要

随着现代工程技术的发展，高性能和多功能聚合物材料的发展得到了促进。在这项工作中，一种基于壳聚糖的新型纳米杂化体在以埃洛石纳米管（HNT）为载体的情况下将锌和铁的混合羟基氧化物雕刻而成，然后用硬脂酸进行表面封端以获得超疏水的HNT @ CSZFMOH纳米填料。将获得的HNT @ CSZFMOH纳米填料掺入环氧树脂（EP）基质中。通过添加3重量％的HNT @ CSZFMOH，EP纳米复合材料的峰值放热速率和峰值烟雾产生分别降低了35％和32％。这种出色的阻燃性归因于源自HNT @ CSZFMOH的增强的物理屏障以及致密，通过超细FeOOH和ZnOOH纳米颗粒的催化炭化形成的高度石墨化炭层。同时，纳米杂化物以159°的水接触角（CA）赋予亲水性基材EP出色的疏水性。EP-基质纳米复合材料表现出所需的自清洁性能，以及对腐蚀性液体（酸和碱溶液）和紫外线辐射的良好耐受性。目前的方法，具有简单的步骤和所需的环境接受度，可以为制造多功能聚合物-基体复合材料提供可行的途径。EP-基质纳米复合材料表现出所需的自清洁性能，以及对腐蚀性液体（酸和碱溶液）和紫外线辐射的良好耐受性。目前的方法，具有简单的步骤和所需的环境接受度，可以为制造多功能聚合物-基体复合材料提供可行的途径。EP-基质纳米复合材料表现出所需的自清洁性能，以及对腐蚀性液体（酸和碱溶液）和紫外线辐射的良好耐受性。目前的方法，具有简单的步骤和所需的环境接受度，可以为制造多功能聚合物-基体复合材料提供可行的途径。

图形摘要