Negative poisson ratio dielectric elastic body-based novel electrical active polymer

Abstract

The invention discloses a negative poisson ratio dielectric elastic body-based novel electrical active polymer. The negative poisson ratio dielectric elastic body-based novel electrical active polymercomprises an elastic film and flexible electrodes, wherein the flexible electrodes are arranged at two sides of the elastic film, the flexible electrodes at the two sides of the elastic film are uniformly coated on an upper surface and a lower surface of the elastic film, the thicknesses of the flexible electrodes are smaller than the thickness of the elastic film, the Young modulus of the flexible electrodes is smaller than the Young modulus of the elastic film, and the flexible electrodes are respectively used for connecting a positive electrode and a negative electrode of an external voltage. When voltages are applied to the flexible electrodes at the two sides, the elastic film contracts simultaneously along a thickness direction, a length direction and a width direction, the volume is reduced, the density, the rigidity and the bearing capability of the material are improved, the failure limit of mechanical damage, electric breakdown and electromechanical coupling instability is improved, so that the negative poisson ratio dielectric elastic body-based novel electrical active polymer has more excellent electromechanical performance compared with a traditional dielectric electrical active polymer.

Description

technical field [0001] The invention relates to an electroactive polymer, in particular to a novel electroactive polymer based on a negative Poisson's ratio dielectric elastomer. Background technique [0002] Negative Poisson's ratio material, also known as auxetic, is a new type of functional material with a negative Poisson's ratio. When the material is stretched and deformed, it will expand laterally in the direction perpendicular to the load; When a material undergoes compression deformation, it contracts laterally in the direction perpendicular to the load. Therefore, the material will automatically concentrate on the loading place so that it can bear the load more effectively, and the stiffness of the material will also increase non-linearly with the increase of the load, so the negative Poisson's ratio material has a higher shear modulus and resilience toughness , with excellent mechanical properties. [0003] Electroactive polymers are a new class of flexible funct...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a negative park-based A new type of electroactive polymer that is a loose-ratio dielectric elastomer. Through the application of the negative Poisson’s ratio of the electroactive polymer, the shape, density and stiffness of the electroactive polymer can be changed in real time, and the traditional dielectric electroactivity can be improved. As the deformation of the polymer increases, its stiffness and load-bearing capacity decrease, and it is possible to realize the integration, electronics, informatization and intelligence of elastic elements, vibration damping elements, sensor elements, actuator elements and energy recovery elements at the same time change

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