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Microwave dielectric ceramic material with low expansion coefficient, and preparation method thereof

A technology of microwave dielectric ceramics and low expansion coefficient, applied in the field of dielectric ceramics production, can solve problems such as poor thermal shock performance of microwave dielectric ceramics, and achieve the effects of excellent microwave performance, low thermal expansion coefficient, and small dielectric constant temperature coefficient

Inactive Publication Date: 2021-05-04
无锡市高宇晟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

Due to the poor thermal shock performance of microwave dielectric ceramics, it is related to the large thermal expansion coefficient of existing microwave dielectric ceramics, so how to reduce the expansion coefficient of ceramic materials is a technical problem to be solved by the prior art

Method used

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  • Microwave dielectric ceramic material with low expansion coefficient, and preparation method thereof
  • Microwave dielectric ceramic material with low expansion coefficient, and preparation method thereof
  • Microwave dielectric ceramic material with low expansion coefficient, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023]Example 1 Low expansion coefficient microwave medium ceramic material

[0024]Includes body ingredients and modified additives, the main body component is XAL2O3-YTIO2Where x = 0.918, y = 0.078; the modified additive is ZrO2La2O3The combination.

[0025]Wherein, the modified additive corresponds to the mass ratio of the main component, respectively: Zro20-3.0%, LA2O3It is 0-3.0%.

[0026]The preparation method of low expansion coefficient microwave medium ceramic material, including steps as follows:

[0027]1) Put Al2O3, TIO2Compared to the XAL2O3-YTIO2After the mixture is mixed with the modified additive;

[0028]2) The mixture obtained by step 1) is placed in the planetary ball milling to obtain a ball mill;

[0029]3) The ball grinding material obtained by step 2) performs drying treatment to obtain a dry powder S1;

[0030]4) Put the dry powder S1 into a high temperature furnace box furnace to prepare a pre-stencil.

[0031]5) After pulverizing the pre-stencil material obtained by step 4), a wet...

Embodiment 2

[0039]Example 2 Low expansion coefficient microwave medium ceramic material

[0040]Includes body ingredients and modified additives, the main body component is XAL2O3-YTIO2Where x = 0.914, y = 0.072; the modified additive is Zro2ND2O3The combination.

[0041]Wherein, the modified additive corresponds to the mass ratio of the main component, respectively: Zro20-3.0%, ND2O3It is 0-3%.

[0042]Preparation method: To.

Embodiment 3

[0043]Example 3 Low expansion coefficient microwave medium ceramic material

[0044]Includes body ingredients and modified additives, the main body component is XAL2O3-YTIO2, Where x = 0.902, y = 0.075; the modified additive is Zro2SiO2The combination.

[0045]Wherein, the modified additive corresponds to the mass ratio of the main component, respectively: Zro20-3.0%, SIO20-0.7%.

[0046]Preparation method: To.

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Abstract

The invention is applicable to the technical field of dielectric ceramic production, and discloses a microwave dielectric ceramic materialwith a low expansion coefficient. The material comprises a main component and a modified additive, the main component is xAl2O3-yTiO2, x = 0.88-0.92, y = 0.06-0.09; and the modified additive is a combination of at least two of ZrO2, La2O3, Nd2O3, SiO2 and CaCO3. The invention also provides a method for preparing microwave dielectric ceramic material with the low expansion coefficient. The microwave dielectric ceramic material with the low expansion coefficient has the advantages of low expansion coefficient, adjustable dielectric constant, high quality factor and near-zero temperature coefficient of resonance frequency.

Description

Technical field[0001]The present invention relates to the field of medium ceramic production, and more particularly to a low expansion coefficient microwave medium ceramic material and a preparation method thereof.Background technique[0002]The microwave medium material refers to a ceramic applied to a microwave band (300MHz ~ 300GHz) circuit as a medium and completes one or more functions, mainly used to prepare microwave components such as resonator, filter, medium antenna, medium wave circuit. . With the rapid deployment of 5G network, 5G large-scale antenna technology increases the number of times of antennas, 5G communication, miniaturization, light weight, low cost, high performance, but currently 4G communication with metal cavity The filter is large, the weight is large, the heat is more heat, and the price is more expensive, it is difficult to use in high integrated antennas.[0003]Microwave medium ceramic materials often suffer from ambient temperature suddenly (thermal shoc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/10C04B35/634C04B35/638
CPCC04B35/10C04B35/63416C04B35/638C04B2235/3232C04B2235/3244C04B2235/3227C04B2235/3224C04B2235/3418C04B2235/442C04B2235/96C04B2235/9607
Inventor 孙杰黄庆焕王斌华叶荣徐海新
Owner 无锡市高宇晟新材料科技有限公司