Preparation method of a conductive composite material whose conductivity depends on the applied electric field

Abstract

The invention discloses a preparation method of a conductive composite material whose conductivity depends on an applied electric field, and relates to the technical field of preparation of conductive materials and composite materials. The technical scheme is to mix a graphene dispersion liquid with an aqueous solution of zinc chloride; Amide; separate the solid product in the system to obtain a conductive composite material powder whose conductivity depends on the applied electric field; put the composite material powder obtained in the step into a pressing mold, carry out cold pressing at room temperature, and slowly vacuumize during the period, and maintain the pressure for a period of time; Increase the pressure and heat up, keep the pressure and temperature for a period of time; naturally cool down to room temperature and then take it out of the furnace to obtain a conductive composite material whose conductivity depends on the applied electric field (referred to as GPN / ZnS composite material). The method provided by the invention prepares a conductive composite material whose conductivity depends on the applied electric field, and the resistivity of the obtained material decreases obviously with the rise of the applied electric field.

Description

technical field [0001] The invention relates to the technical field of preparation of conductive materials and composite materials, in particular to a preparation method of conductive composite materials whose conductivity depends on an applied electric field. Background technique [0002] Common conductive materials can be divided into conductors, semiconductors and insulators according to their conductivity. In conventional electrical applications, the conductivity of a specific conductor is a constant parameter that does not change significantly with the external environment; the conductivity of a semiconductor changes with factors such as light, temperature and stress (such as heat-sensitive, photosensitive, piezoresistive effects, etc.), However, light, temperature, and stress are all external conditions, not electrical conditions; and insulating materials generally do not have conductivity, and only pass instantaneous strong current under high-voltage breakdown conditi...

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Problems solved by technology

In the current application of electronic technology, there is no report that the conductivity of materials is directly determined by the applied electric field

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