摘要
High-performance materials with versatile functionalities are highly desirable for modern electronic devices. Inspired by natural nacre with a layered aragonite platelet/chitin nanofiber/protein ternary structure, a high-strength nanopaper is fabricated by introducing two-dimensional (2D) montmorillonite (MTM) nanoplates and 1D cellulose nanofibrils (CNFs) into a 3D aramid nanofiber (ANF) framework via vacuum filtration. The obtained ANF/MTM/CNF nanopapers yield record-high tensile strength (delta(c)) (484.58 MPa) and outstanding toughness (epsilon(c)) (53.70 MJ m(-3)). Furthermore, the incorporation of Ag nanowires (AgNWs) enables the nanopapers to achieve high heating temperatures (up to similar to 200 degrees C) and satisfactory electromagnetic interference shielding effectiveness (24.14 dB). Moreover, the ANF/MTM/CNF/AgNW nanopapers maintain excellent mechanical properties, where their delta(c) and epsilon(c) are 488.48 MPa and 52.74 MJ m(-3). Normalized by weight, the specific tensile strength of the nanopapers reaches 359 MPa g(-1) cm(3), that is even superior to that of a commercial titanium alloy (257 MPa g(-1) cm(3)). Besides, the nanopapers have outstanding mechanical durability, in which, being electrically heated at 170 degrees C for 1 h, the nanopapers still retain 93.69% of the ori