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Wearable Aramid–Ceramic Aerogel Composite for Harsh Environment
Advanced Engineering Materials ( IF 3.4 ) Pub Date : 2020-11-28 , DOI: 10.1002/adem.202001169 Lu An 1 , Baoshan Liang 1 , Zipeng Guo 2 , Jieyu Wang 3 , Changning Li 1 , Yulong Huang 1 , Yong Hu 1 , Zheng Li 1 , Jason N. Armstrong 1 , Chi Zhou 2 , Danial Faghihi 1 , Shenqiang Ren 1, 3, 4
Advanced Engineering Materials ( IF 3.4 ) Pub Date : 2020-11-28 , DOI: 10.1002/adem.202001169 Lu An 1 , Baoshan Liang 1 , Zipeng Guo 2 , Jieyu Wang 3 , Changning Li 1 , Yulong Huang 1 , Yong Hu 1 , Zheng Li 1 , Jason N. Armstrong 1 , Chi Zhou 2 , Danial Faghihi 1 , Shenqiang Ren 1, 3, 4
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High‐performance lightweight polymer fibers are attracting significant interest for wearable systems, where its thermal insulation performance is indispensable for harsh environments. However, one drawback of polymer fibers is its limited operating temperature range. Herein, a crosslinked poly(p‐phenylene terephthalamide) fiber and ceramic aerogel nanocomposite is reported, exhibiting hot and cold thermal management from cryogenic to high‐temperature condition (over 400 °C) and robust mechanical performance, which can be produced using additive textile manufacturing. The resulting ceramic aerogel nanocomposites demonstrate a low density (0.08 g cm−3), a low thermal conductivity (0.034 W m−1 K−1), and a high compressive mechanical strength of 1.1 MPa, due to the crosslinked interfacial interaction between the aramid fiber and the silica aerogel. A finite‐element model is developed to study the compression performance of aramid–aerogel composite, demonstrating that the robust mechanical performance is strengthened by interfacial bonding. These findings demonstrate that composite sheets are promising candidates for the low‐cost manufacturing of wearable textiles for applications in harsh environments.
中文翻译：
适用于恶劣环境的可穿戴芳纶陶瓷气凝胶复合材料
高性能轻质聚合物纤维引起了可穿戴系统的极大兴趣，在恶劣环境下，其绝热性能是必不可少的。然而，聚合物纤维的一个缺点是其有限的工作温度范围。本文报道了一种交联的聚对苯二甲酰对苯二胺纤维和陶瓷气凝胶纳米复合材料，具有从低温到高温（超过400°C）的热和冷热管理，以及强大的机械性能，可以使用添加纺织物来生产。制造业。所得的陶瓷气凝胶纳米复合材料显示出低密度（0.08 g cm -3），低导热率（0.034 W m -1 K -1）和1.1 MPa的高压缩机械强度，这是由于芳族聚酰胺纤维和二氧化硅气凝胶之间发生了交联的界面相互作用。建立了一个有限元模型来研究芳纶-气凝胶复合材料的压缩性能，证明了界面结合增强了坚固的机械性能。这些发现表明，复合片材是低成本制造可穿戴纺织品的有希望的候选者，这些纺织品可用于恶劣的环境。
更新日期：2020-11-28
中文翻译：
适用于恶劣环境的可穿戴芳纶陶瓷气凝胶复合材料
高性能轻质聚合物纤维引起了可穿戴系统的极大兴趣，在恶劣环境下，其绝热性能是必不可少的。然而，聚合物纤维的一个缺点是其有限的工作温度范围。本文报道了一种交联的聚对苯二甲酰对苯二胺纤维和陶瓷气凝胶纳米复合材料，具有从低温到高温（超过400°C）的热和冷热管理，以及强大的机械性能，可以使用添加纺织物来生产。制造业。所得的陶瓷气凝胶纳米复合材料显示出低密度（0.08 g cm -3），低导热率（0.034 W m -1 K -1）和1.1 MPa的高压缩机械强度，这是由于芳族聚酰胺纤维和二氧化硅气凝胶之间发生了交联的界面相互作用。建立了一个有限元模型来研究芳纶-气凝胶复合材料的压缩性能，证明了界面结合增强了坚固的机械性能。这些发现表明，复合片材是低成本制造可穿戴纺织品的有希望的候选者，这些纺织品可用于恶劣的环境。
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