Scalable Ambient-Dried Aramid Aerogel Fibers with Hierarchical Networks for Ultrahigh Toughness and Thermal Insulation

Key Points

• This research aims to develop aramid aerogel fibers that achieve a balance of porosity and mechanical strength while using ambient drying techniques.
• Developed a proton-donor-assisted solvent-exchange strategy.
• Fabricated aramid nanofiber-based aerogels with hierarchical structures.
• Performed mechanical and thermal insulation testing to evaluate performance.
• Achieved high porosity and mechanical robustness in the aerogel fibers.
• Demonstrated superior toughness compared to conventional aerogels.
• Showcased significant thermal insulation properties.