Multifunctional Thermally Conductive Composite Films Based on Heterostructured Silver Nanowires@Boron Nitride Nanosheets and Aramid Nanofibers

►“Fungal tree”-like hetero-structured silver nanowires@boron nitride nanosheet (AgNWs@BNNS) thermally conductive fillers are prepared by the method of “solvothermal & in-situ growth”. ►Thermally conductive AgNWs@BNNS/ANF composite films have the optimal thermal conductivity coefficient of 9.44 W/(m·K) and excellent tensile strength of 136.6 MPa. ►Thermally conductive AgNWs@BNNS/ANF composite films have good temperature-voltage response characteristics (e.g., high Joule heating temperature at low supply voltage (5 V, 240.6^oC), fast response time (10 s)). ►Thermally conductive AgNWs@BNNS/ANF composite films have excellent electrical stability and reliability, exhibiting stable and constant real-time relative resistance under up to 1000 times, 6000 s of tensile-bending fatigue work test.