Multi‐Hierarchically Constructing Durable and Flame Retardant CNF/MXene/PDMS Composite Aerogels for Superhigh Electromagnetic Shielding Performance and Ultralow Thermal Conductivity

Small, Journal Year: 2025, Volume and Issue: unknown

Published: April 10, 2025

Abstract There is a significant increase in the demand for lightweight and compressible electromagnetic interference (EMI) shielding materials various fields. Though MXene aerogels hold immense potential as EMI materials, several shortcomings including poor water resistance, low mechanical robustness, easy oxidation, high cost limits of their wide application. This work reported novel strategy involving co‐assembly cellulose nanofibers (CNF) through directional freezing freeze‐drying, followed by capsulation‐concreting thin layer flame‐retardant polydimethylsiloxane (PDMS) onto aerogel, to multi‐hierarchically construct series high‐performance CNF/MXene/PDMS composite aerogels. The CNF/MXene/PDMS/MPP‐Zr@PDA aerogel achieved ultrahigh effectiveness 96.8 dB (X‐band) utilization efficiency 1713.27 g −1 . Furthermore, PDMS coating effectively imparted excellent compressibility durability 3D scaffold, resulting compressive strength 17.01 kPa representing 199.5% compared CNF aerogel. Additionally, exhibited outstanding properties (54.6% reduction heat release rate), ultralow thermal conductivity 0.0530 W m K hydrophobicity. Therefore, durable promising applications protection, management, smart fire detection, other specific

Language: Английский

Efficient production of ultrafine poly-p-phenylene benzobisoxazole nanofibres for high-performance polyurea nanocomposites

Progress in Organic Coatings, Journal Year: 2025, Volume and Issue: 205, P. 109301 - 109301

Published: April 11, 2025

Language: Английский