Adaptive electric field regulation and control composite material based on gradient distribution and preparation method thereof

Abstract

The invention discloses an adaptive electric field regulation and control composite material based on gradient distribution and a preparation method thereof. The preparation method comprises the following steps: firstly, preparing ZnO pressure-sensitive microspheres, taking a set amount of glass fibers, and finally, carrying out vacuum pouring on epoxy resin, a curing agent, ZnO pressure-sensitivemicrospheres and glass fibers to prepare a composite material of a high-temperature cured epoxy resin matrix, wherein the glass fibers are used for regulating and controlling a three-dimensional network of the composite material to inhibit sedimentation of the ZnO pressure-sensitive microspheres, so that the spatial distribution of the composite material is uniform, and the performance of the composite material is improved.

Description

technical field [0001] The invention relates to the technical field of composite material preparation, in particular to an adaptive electric field control composite material based on gradient distribution and a preparation method thereof. Background technique [0002] Due to its nonlinear electrical properties, electric field adaptive materials have broad prospects in the application of high-voltage equipment. The adaptive characteristics of electric field adaptive materials are reflected in the fact that their electrical parameters can change with the external electric field. When the space electric field somewhere in the material has When the trend of the average electric field is significantly higher than that of the adjacent area, the conductivity or permittivity of the material there will also increase significantly, thereby reducing the electric field intensity at this place, so that the effect of a uniform electric field can be achieved. The influence of the electrica...

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Problems solved by technology

In related technologies, ZnO pressure-sensitive microspheres are used as doped fillers in electric field adaptive composite materials, which can greatly improve the performance of composite materials. However, ZnO pressure-sensitive microspheres have a higher density and a smaller specific surface area, so the ZnO pressure-sensitive When the microspheres are added to the matrix of the composite material, the bonding strength of the interface between the ZnO pressure-sensitive microspheres and the matrix is ​​not enough to offset the influence of gravity, and the ZnO pressure-sensitive microspheres will settle under the action of gravity, resulting in uneven spatial distribution of the composite material, seriously Affects the performance of composite materials, and cannot meet the regulation requirements of gradient and threshold field strength of composite materials

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