Journal
ACS NANO
Volume 13, Issue 5, Pages 5703-5711Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.9b01094
Keywords
aerogel threads; nanofibrous Kevlar; thermal insulation; extreme environments; simulation analysis
Categories
Funding
- National Natural Science Foundation of China [51572285]
- National Key Research and Development Program of China [2016YFA0203301]
- Royal Society Newton Advanced Fellowship [NA170184]
- Natural Science Foundation of Jiangsu Province [BK20170428]
Ask authors/readers for more resources
Aerogel with low density, high porosity, and large surface area is a promising structure for the next generation of high-performance thermal insulation fibers and textiles. However, aerogel fibers suffer from weak mechanical properties or complex fabricating processes. Herein, a facile wet-spinning approach for fabricating nanofibrous Kevlar (KNF) aerogel threads (i.e., aerogel fibers) with high thermal insulation under extreme environments is demonstrated. The aerogel fibers made from nanofibrous Kevlar render a high specific surface area (240 m(2)/g) and wide-temperature thermal stability. The flexible and strong KNF aerogel fibers are woven into textiles to illustrate the excellent thermal insulation property under extreme temperature (-196 or +300 degrees C) and at room temperature. COMSOL simulation is applied to calculate the thermal conductivity of a single aerogel fiber and find an effective way to improve the thermal insulation property of the aerogel fiber. Furthermore, a series of functionalized fibers or textiles based on KNF aerogel fibers, such as phase-change fibers, conductive fibers, and hydrophobic textiles, have been prepared. Such KNF aerogel fibers represent a promising direction for the next generation of high-performance fibrous thermal-insulation materials.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available