Obtained preparation method for promoting polarization of pitch-based piezoceramic piezoelectric composites

Abstract

The purpose of the present invention is to provide preparation methods to promote the polarization of asphalt -based voltage ceramic voltage composite materials, and to obtain voltage ceramic powder over or equal to 350 μm for voltage ceramic powder with a particle size of 350 μm and a particle size of 350 μm.Cases with a particle size of less than 350 μm and the ethanol solution dispersed in 80 ° C in a ethanol solution with a particle size of 80 ° C until the ethanol solution is completely volatile; the piezoelectric ceramic powder and carbon nanopotorcium conductive plasma with a particle size greater than or equal to 350 μm are added without no.Water ethanol is stirred until the water -free ethanol is completely volatilized; the two mixes obtained above are heated and stirred in the drying box to obtain a mixed material;The paste is coated on the surface to form an electrode; put the electrode into the silicon oil to polarize, that is, the asphalt base voltage electric ceramic voltage composite material is obtained.The polarization of the present invention is more sufficient, and it ensures the connection between the inter -particle measuring and the integrity of the material.

Description

technical field [0001] The invention relates to a processing method for piezoelectric materials. Background technique [0002] With the rapid development of intelligent sensing materials, high-performance sensors provide a new way for the development of health monitoring systems, and health monitoring has become a frontier research direction in many fields. Pitch-based piezoelectric ceramic piezoelectric composite materials refer to piezoelectric composite materials prepared by mixing pitch as the matrix phase and piezoelectric ceramic powder as the piezoelectric phase. Used for road health monitoring, it can realize the accuracy and effectiveness of monitoring road health status, and also ensure the compatibility and matching between the sensor system and the road, prolong the service life of the sensor, and provide protection for road health. [0003] Polarization is one of the key processes in the preparation of pitch-based piezoelectric ceramic piezoelectric composites,...

AI Technical Summary

Problems solved by technology

It is necessary to add carbon black and carbon nanotube slurry in an appropriate amount. Too much carbon black and carbon nanotube slurry will increase the conductivity of the material, resulting in leakage current and reducing the degree of polarization, and even make the upper and lower surfaces of the material form a joint while the breakdown material