Biomimetic, knittable aerogel fiber for thermal insulation textile.

IF 44.7 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Science Pub Date : 2023-12-22 Epub Date: 2023-12-21 DOI:10.1126/science.adj8013

Mingrui Wu, Ziyu Shao, Nifang Zhao, Rongzhen Zhang, Guodong Yuan, Lulu Tian, Zibei Zhang, Weiwei Gao, Hao Bai

引用次数: 0

Abstract

Aerogels have been considered as an ideal material for thermal insulation. Unfortunately, their application in textiles is greatly limited by their fragility and poor processability. We overcame these issues by encapsulating the aerogel fiber with a stretchable layer, mimicking the core-shell structure of polar bear hair. Despite its high internal porosity over 90%, our fiber is stretchable up to 1000% strain, which is greatly improved compared with that of traditional aerogel fibers (~2% strain). In addition to its washability and dyeability, our fiber is mechanically robust, retaining its stable thermal insulation property after 10,000 stretching cycles (100% strain). A sweater knitted with our fiber was only one-fifth as thick as down, with similar performance. Our strategy for this fiber provides rich possibilities for developing multifunctional aerogel fibers and textiles.

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用于隔热纺织品的仿生可编织气凝胶纤维。

气凝胶一直被认为是理想的隔热材料。遗憾的是，由于气凝胶易碎且加工性差，其在纺织品中的应用受到很大限制。我们模仿北极熊毛发的核壳结构，在气凝胶纤维上封装了一层可拉伸层，从而克服了这些问题。尽管气凝胶纤维的内部孔隙率高达 90% 以上，但其拉伸应变高达 1000%，与传统气凝胶纤维（约 2% 的应变）相比有了很大改善。除了耐洗、耐染之外，我们的纤维还具有很强的机械强度，在经过 10,000 次拉伸循环（100% 应变）后仍能保持稳定的隔热性能。用我们的纤维编织的毛衣厚度仅为羽绒的五分之一，但性能却相差无几。我们对这种纤维的研究为开发多功能气凝胶纤维和纺织品提供了丰富的可能性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Science 综合性期刊-综合性期刊

CiteScore

61.10

自引率

0.90%

发文量

审稿时长

2.1 months

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