High-dielectric elastic composite material as well as preparation method and application thereof

An elastic composite material, high dielectric technology, applied in chemical instruments and methods, electrospinning, rayon manufacturing, etc., can solve problems such as difficulty in achieving mechanical flexibility, and achieve the effect of optimizing dielectric properties
CN112918031AActive Publication Date: 2021-06-08TSINGHUA UNIV
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
TSINGHUA UNIV
Publication Date
2021-06-08

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Abstract

The invention discloses a high-dielectric elastic composite material as well as a preparation method and application thereof. The composite material comprises a nano ceramic-based elastic composite film and a nano conductive material-based elastic composite film which are sequentially laminated and distributed. The nano ceramic-based elastic composite film comprises a ceramic nano-material and an elastic polymer matrix material, wherein the ceramic nano-material is distributed in an elastic polymer matrix in a three-dimensional network structure. The nano conductive material-based elastic composite film comprises a conductive nano material and an elastic polymer matrix material. By constructing a three-dimensional network structure and a multi-stage interface structure of a heterogeneous film, the coupling effect of interface polarization and internal electric field regulation of the elastic composite film under an electric field is realized, so that the dielectric property of the composite material is remarkably improved. Meanwhile, the mechanical property of the composite material is optimized through the microstructure design.
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Description

technical field

[0001] The invention belongs to the technical field of flexible and stretchable electronic devices, and in particular relates to a high dielectric, low loss and low modulus elastic dielectric composite material applied to a flexible strain sensor and its preparation method and application. Background technique

[0002] As a core component of information collection and intelligent control systems, flexible sensors can collect, process and feed back a variety of information. They have broad application prospects in the fields of intelligent robots, bionic prostheses, aerospace and health monitoring.

[0003] Traditional mechanical sensors based on metal and semiconductor materials have major challenges in terms of deformability and sensitivity, and cannot perform real-time detection and feedback of the composite stress and strain on mechanical equipment or flexible substrates. Low-dimensional flexible mechanical sensors have many advantages such as free deforma...

Claims

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