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Anti-static aluminum oxide ceramic material and preparation method thereof

An alumina ceramic and anti-static technology, applied in the field of functional ceramics, can solve problems such as poor dispersion, difficult preparation, and reduced strength, and achieve the effects of ensuring density and strength, simple preparation process, and improving processing toughness

Active Publication Date: 2021-11-26
杭州大和江东新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Only a large amount of conductive mica powder can be added to achieve the required resistivity, and the cost is high; compared with alumina powder, conductive metal powder has a large proportion, is easy to precipitate, has poor dispersibility, is difficult to prepare, and is easy to be oxidized; and conductive fiber belongs to Inorganic polymer materials, alumina belongs to inorganic non-metallic materials, it is difficult to mix two different types of materials evenly
[0006] The addition of conductive filler, on the basis of reducing the resistivity, will also cause the relative density of the matrix alumina to decrease, the porosity to increase, and the strength to decrease

Method used

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  • Anti-static aluminum oxide ceramic material and preparation method thereof
  • Anti-static aluminum oxide ceramic material and preparation method thereof
  • Anti-static aluminum oxide ceramic material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041](1) Add 4g of N-methylolacrylamide, 0.1g of N,N'-methylenebisacrylamide, 0.2g of defoamer and 1g of polyacrylamide into 25g of pure water, and stir for 15 minutes until all materials Dissolve in pure water; add 1g of yttrium oxide powder and 4g of α-silicon carbide powder with a particle size of 200nm to the resulting solution, stir for 15 minutes until the powder is dispersed in the solution; then add 95g of alumina powder into the solution Continue stirring for 20 minutes until the powder is evenly dispersed to obtain a slurry with a solid content of 80% and good fluidity; then add 0.1 g of ammonium persulfate to the slurry and stir for 10 minutes; obtain a mixed slurry;

[0042] (2) Put the obtained mixed slurry in a vacuum machine to evacuate and stir to remove air bubbles, and the vacuum degree is -0.09Mpa; slowly pour the mixed slurry with removed air bubbles into the glass mold prepared in advance along the wall, and then place the glass mold on the Curing is carr...

Embodiment 2

[0045] (1) Add 5g of N-methylolacrylamide, 0.05g of N,N'-methylenebisacrylamide, 0.1g of defoamer and 0.1g of polyacrylamide into 25g of pure water, and stir for 10 minutes until all materials All were dissolved in pure water; 3g of yttrium oxide powder and 5g of α-silicon carbide powder with a particle size of 500nm were added to the resulting solution, and stirred for 10 minutes until the powders were all dispersed in the solution; Aluminum powder, continue to stir for 25 minutes until the powder is evenly dispersed to obtain a slurry with a solid content of 80% and good fluidity; then add 0.05g of ammonium persulfate to the slurry, and stir for 10 minutes to obtain a mixed slurry;

[0046] (2) Put the mixed slurry in the vacuum machine to evacuate and stir to remove air bubbles, the vacuum degree is -0.09Mpa; then slowly pour the mixed slurry after removing the air bubbles into the glass mold prepared in advance along the wall, and then put the glass mold As for curing in a...

Embodiment 3

[0049] (1) Add 5g of N-methylolacrylamide, 0.05g of N,N'-methylenebisacrylamide, 0.1g of defoamer and 0.1g of polyacrylamide into 25g of pure water, and stir for 12 minutes until all materials All were dissolved in pure water; 5g of yttrium oxide powder and 5g of α-silicon carbide powder with a particle size of 1μm were added to the resulting solution, and stirred for 12 minutes until the powders were all dispersed in the solution; then 90g of yttrium oxide was added to the resulting solution Aluminum powder, continue to stir for 25 minutes until the powder is evenly dispersed to obtain a slurry with a solid content of 80% and good fluidity; then add 0.05 g of ammonium persulfate to the slurry, and stir for 12 minutes to obtain a mixed slurry;

[0050] (2) Put the mixed slurry in a vacuum machine to evacuate and stir to remove air bubbles, the vacuum degree is -0.09Mpa; then slowly pour the obtained slurry after removing air bubbles into the glass mold prepared in advance along...

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Abstract

The invention relates to the field of functional ceramics, and provides an anti-static aluminum oxide ceramic material and a preparation method thereof in order to reduce the resistivity of aluminum oxide ceramics and enable the aluminum oxide ceramics to meet wider use requirements, aiming at the problems of common conductive fillers, the anti-static aluminum oxide ceramic material is composed of three phases of aluminum oxide, silicon carbide and yttrium aluminate. The silicon carbide is used as the conductive filler to prepare the anti-static aluminum oxide material with excellent performance, wear resistance, corrosion resistance and high temperature resistance, and the preparation method of the anti-static aluminum oxide ceramic, which is simple in preparation process and low in cost, is provided.

Description

technical field [0001] The invention relates to the field of functional ceramics, and mainly relates to an antistatic alumina ceramic material and a preparation method thereof. Background technique [0002] Static electricity is a common phenomenon in production and life, such as friction electrification, flow electrification, impact electrification, etc. Although the electricity of static electricity is not large, its high voltage characteristics are easy to cause discharge, resulting in sparks, which can easily cause fire or even explosion in industrial production. In some high-end instruments and equipment, static electricity will also affect the performance of the equipment Affected, cannot be used normally. [0003] Anti-static material refers to the ability of the original insulating material to have a certain degree of conductivity, so that static electricity can be quickly dissipated and static electricity can be prevented from accumulating. The surface resistivity...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/10C04B35/622C04B35/64
CPCC04B35/10C04B35/622C04B35/64C04B2235/3826C04B2235/3222C04B2235/3225C04B2235/6581C04B2235/77C04B2235/96
Inventor 何冬霜姚相民马玉琦蔡德奇周斌
Owner 杭州大和江东新材料科技有限公司
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