1results about How to "Control microstructure" patented technology

This invention discloses a flexible multifunctional composite film integrating heat dissipation and flame retardancy, its preparation method, and its application, belonging to the technical field of multifunctional composite film materials. The composite film is composed of MXene, graphene oxide (GO), and carbon nanotubes (CNTs) in a specific mass ratio, prepared by magnetic stirring, ultrasonic dispersion in a cold water bath, pulsed / gradient negative pressure vacuum filtration, and freeze-drying. The film thickness is 20-30 μm. In the layered structure of the film, GO sheets are inserted between MXene layers, and CNTs bridge the layers to form a three-dimensional thermally conductive network, achieving high in-plane thermal conductivity (≥4 W·m). ‑1 ·K ‑1 It also possesses excellent flame retardancy (limiting oxygen index LOI ≥ 28%, UL-94V-0 rated) and excellent mechanical flexibility. This film can be used as an integrated heat dissipation-flame retardant interface layer in high-power density electronic devices, electric vehicles, and other fields to address risks such as thermal runaway and fire.