▎ 摘　　要

NOVELTY - High dielectric elastic composite material comprises sequentially laminated nano-ceramic-based elastic composite film and nano-conductive material-based elastic composite film, and the outermost layer of the high dielectric elastic composite material is the nano-ceramic-based elastic composite film. The nano ceramic-based elastic composite film comprises ceramic nano-material and elastic polymer matrix material. The ceramic nano-material is distributed in a three-dimensional network structure on the surface of the elastic polymer matrix material. The nano conductive material-based elastic composite film comprises a conductive nanomaterial and an elastic polymer matrix material. The conductive nanomaterial is distributed in a three-dimensional network structure on the surface of the elastic polymer matrix material. USE - High dielectric elastic composite material. ADVANTAGE - The high dielectric elastic composite material constructs the multi-level interface structure of the three-dimensional network structure and heterogeneous film, realizes the elastic composite film under the electric field interface polarization and internal electric field control of the coupling, so as to obviously improve the dielectric performance of the composite material. At the same time, the micro-structure design optimizes the mechanical property of the composite material. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) a method for preparing the high dielectric elastic composite material, which involves using a double-push-injection electrostatic spinning instrument, one end of the elastic polymer matrix material solution for spinning, the other end of the ceramic nano-material dispersion liquid for synchronous electrostatic spraying, using receiving roller for electrostatic spinning of the elastic fiber and electrostatic spraying ceramic nano-material synchronous receiving, the solvent is quickly volatilized in the process so as to obtain the nanoceramic-based elastic fiber film, using double-push-injection electrostatic spinning instrument, one end of the elastic polymer matrix material solution for spinning, the other end of the conductive nano-material dispersion liquid for synchronous electrostatic spraying, using the receiving roller for electrostatic spinning of the elastic fiber and electrostatic spray of conductive nano material synchronous receiving, the solvent is quickly volatilized in the process so as to obtain the nano conductive material based elastic fibrefilm, laminating and assembling the nanoceramic base elastic fiber film and the nanoconductive material base elastic fiber film oderly, and the nano ceramic base elastic composite film is placed on the outermost layer, using a hot press for hot pressing forming, so as to obtain the compact multi-layer structure of high dielectric elastic composite material; and (2) a flexible strain sensor, where the flexible strain sensor is prepared by using the high dielectric elastic composite material and the high dielectric elastic composite material prepared. DESCRIPTION OF DRAWING(S) - The drawing shows the schematic view of a process for preparingelectrostatic spinning and electrostatic spraying.