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Conductive polyaniline/piezoelectric ceramic powder composite material and its prepn process

A conductive polyaniline, piezoelectric ceramic technology, applied in the direction of oxide conductors, non-metallic conductors, organic material conductors, etc., can solve the problems of not being able to distribute carbon black particles around each piezoelectric ceramic particle, and low power conversion rate. , to achieve the effect of easy realization, high conversion rate and simple preparation method

Inactive Publication Date: 2007-11-07
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The current common method is to add a very small amount of carbon black particles into the composite material system as a conductive phase, but the disadvantage of this method is that the carbon black particles cannot be completely distributed around each piezoelectric ceramic particle, and most of the piezoelectric ceramic particles Electroceramic particles may not have played the corresponding role, that is, the conversion rate of electrical energy to thermal energy is not high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Conductive polyaniline / piezoelectric ceramic powder composite material, which is prepared from piezoelectric ceramic powder, aniline monomer, oxidant and doped acid solution raw materials, the parts by weight of each raw material are: piezoelectric ceramic powder 100, aniline monomer Body 10, oxidizing agent 25, doped acid solution 500; wherein the oxidizing agent is selected (NH 4 ) 2 S 2 o 8 , the doping acid solution is 1.0ml / L hydrochloric acid solution; the piezoelectric ceramic powder is lead niobium magnesium zirconate titanate (PMN) powder; the particle size of the piezoelectric ceramic powder is 1-10 μm.

[0017] The preparation method of the above-mentioned conductive polyaniline / piezoelectric ceramic powder composite material is coated with conductive polyaniline on the surface of piezoelectric ceramic powder particles by chemical oxidation in-situ polymerization, and it includes the following steps:

[0018] 1) According to the parts by weight of each raw...

Embodiment 2

[0022] Conductive polyaniline / piezoelectric ceramic powder composite material, which is prepared from piezoelectric ceramic powder, aniline monomer, oxidant and doped acid solution raw materials, the parts by weight of each raw material are: piezoelectric ceramic powder 50, aniline monomer Body 10, oxidizing agent 20, doped acid solution 500; wherein the oxidizing agent is selected (NH 4 ) 2 S 2 o 8 , the doping acid solution is 1.0ml / L hydrochloric acid solution; the piezoelectric ceramic powder is lead zirconate titanate (PZT) powder; the particle size of the piezoelectric ceramic powder is 1-10 μm.

[0023] The preparation method of the above-mentioned conductive polyaniline / piezoelectric ceramic powder composite material is coated with conductive polyaniline on the surface of piezoelectric ceramic powder particles by chemical oxidation in-situ polymerization, and it includes the following steps:

[0024] 1) According to the parts by weight of each raw material: piezoele...

Embodiment 3

[0028] Conductive polyaniline / piezoelectric ceramic powder composite material, which is prepared from piezoelectric ceramic powder, aniline monomer, oxidant and doped acid solution raw materials, the parts by weight of each raw material are: piezoelectric ceramic powder 100, aniline monomer Body 10, oxidizing agent 22, doped acid solution 700; wherein the oxidizing agent is selected (NH 4 ) 2 S 2 o 8 , the doped acid solution is 1.0ml / L dodecylbenzenesulfonic acid (DBSA) solution; the piezoelectric ceramic powder is lead lanthanum zirconate titanate (PLZT) powder, lead lanthanum zirconate titanate (PLZT) powder The particle size is 1-10 μm.

[0029] The preparation method of the above-mentioned conductive polyaniline / piezoelectric ceramic powder composite material is coated with conductive polyaniline on the surface of piezoelectric ceramic powder particles by chemical oxidation in-situ polymerization, and it includes the following steps:

[0030] 1) According to the parts...

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Abstract

The present invention relates to one kind of conductive polyaniline / piezoelectric ceramic powder composite material and its preparation process. The composite material is prepared with piezoelectric ceramic powder 50-150 weight portions, aniline monomer 10 weight portions, oxidant (NH4)2S2O8 20-25 weight portions, and 1.0 ml / l concentration hydrochloric acid solution as the doping acid solution 500-1000 weight portions. The present invention has the features of good machining performance and high electric energy-to-heat energy conversion rate.

Description

technical field [0001] The invention relates to a conductive / piezoelectric composite material and a preparation method thereof. technical background [0002] Piezoelectric ceramics is a functional ceramic material that can convert mechanical energy and electrical energy. It is composed of several different oxides, such as alumina, barium oxide, zirconia, titanium oxide, niobium oxide, and sodium oxide. It is manufactured through molding, high-temperature solid-state reaction, sintering, and finally synthesis. The structure of piezoelectric ceramics is asymmetric, and there is a certain electric field inside. When a mechanical pressure is applied in a certain direction of the ceramic, it will cause polarization in a specific direction, and correspondingly cause a potential difference between the surfaces. On the contrary, if in a certain direction When an electric field is applied in the same direction, the ceramic will also undergo certain deformation and displacement. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L79/02C08K3/24C08G73/02H01B1/06H01B1/08H01B1/12
Inventor 黄志雄杨国瑞魏涛秦岩梅启林石敏先郦亚铭
Owner WUHAN UNIV OF TECH
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