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Pure-crystalline-phase high-quality-factor nano-sized calcium magnesium titanate ceramic powder and preparation method thereof

A calcium magnesium titanate ceramic with a high quality factor technology, which is applied in the field of material preparation, can solve the problems of limiting the development and application of calcium magnesium titanate ceramic materials, agglomerated crystal phases, large particles, etc., and achieve good particle dispersion and particle size Relatively, the effect of uniform particle size

Pending Publication Date: 2022-03-18
元颉新材料科技(浙江)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the calcium magnesium titanate ceramic powder particles obtained by the existing common solid-phase preparation method are often relatively large. Even if the particle size can reach the nanometer level, after the product is dried, it will always cause serious agglomeration or impure crystal phase, which is extremely difficult. Greatly limit the development and application of calcium magnesium titanate ceramic materials

Method used

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  • Pure-crystalline-phase high-quality-factor nano-sized calcium magnesium titanate ceramic powder and preparation method thereof
  • Pure-crystalline-phase high-quality-factor nano-sized calcium magnesium titanate ceramic powder and preparation method thereof

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Effect test

Embodiment 1

[0027] 10 g of magnesium carbonate, 0.5 g of calcium carbonate and 1.0 g of PEG-10000 were dissolved with 500 ml of water and ethanol mixed solvent (water and organol than 1: 0.1), and 100 ml was stirred with 40 g of titanium tetrachloride after stirring for half an hour. The solution was added to the above solution by a peristaltic pump. After stirring for 12 h, the resulting gel solution product was separated at 11000 rpm to give a gel for 5 minutes, and then washed twice with water and ethanol, and after drying at 80 ° C for 12h after air. After 4 hours by 1100 ° C, the gas pressure is 8.0 MPa gaseous pulverizer, and the cyclone is collected from the powder sample, which can obtain D50 70 nm, pure crystal phase nanometer titanate calcium ceramic powder, dielectric Constant test results are 20.6, and the quality factor can reach 110,000. Its morphology and characteristics Figure 1 - Figure 2 Indicated.

Embodiment 2

[0029] 10 g of oxalic acid, 1 g of calcium chloride and 1.0 g of PEG-40000 were dissolved with 500 ml of water and ethanol mixed solvent (the volume ratio of water and the organol was 1: 0.1), and 100 ml was 10 g of a hydracelide solution of 50 g of chloride solution after stirring for half an hour. The above solution was added to the peristaltic pump. After stirring for 12 h, the resulting gel solution product was separated at 11000 rpm to give a gel for 5 minutes at 11000 rpm, and then washed twice with water and ethanol, after 12 hours of dry 12 hours, After 4 hours of calcination at 900 ° C, D50 is 90 nm, and the pure crystal phase high quality factor nano-sized titanate calcium ceramic powder can be obtained.

Embodiment 3

[0031]10 g of magnesium carbonate, 1 g of calcium carbonate and 1.0 g of PEG-10000 were dissolved with 500 ml of water and ethanol mixed solvent (water and organol than 1: 0.2), and after stirring for half an hour, the above solution was slowly dripped with a peristaltic pump. After adding 400 mL of a titanium titanium tetrachloride solution, after stirring for 12 h, the resulting gel solution product was separated at 8000 rpm to give a gel for 5 minutes, and then washed twice with water and ethanol, dry 100 ° C in the air. After 12 hours, after 4 hours of calcination at 1000 ° C, the gas pressure was 1.0 MPa gaseous pulverizer, the cyclone separator collected the obtained powder sample, which can obtain D50 to 105 nm, pure crystal phase high quality factor nanometer titanate magnesium titanate Calcium ceramic powder.

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Abstract

The invention relates to a pure-crystalline-phase high-level nano-sized magnesium calcium titanate ceramic powder material and a preparation method thereof.The material is nano-sized magnesium calcium titanate ceramic powder which is of an irregular-shaped pure-crystalline-phase structure, the particle size of the material is 60-150 nm, the particle size D50 is smaller than 200 nm after drying and smashing treatment, the specific surface area is 1-30 m < 2 > / g, and the specific surface area is 1-30 m < 2 > / g. And the processed and sintered ceramic device has an ultrahigh quality factor, and the dielectric constant is adjustable in a range of 20-40. Compared with the prior art, the preparation process is simple and convenient to operate, extra complex conditions and complex equipment are not needed, the reaction can be carried out by stirring at normal temperature and pressure, and the practical raw materials are cheap and easy to obtain, so that the preparation cost of the material is relatively low; and the prepared calcium magnesium titanate can be used for manufacturing electronic ceramic devices, filter ceramic devices and the like.

Description

Technical field [0001] The present invention belongs to the technical field of material preparation, and more particularly to a particle size D50 less than 200 nm, pure crystal phase nano-size titanate calcium ceramic powder and a preparation method thereof. Background technique [0002] Titanium titanate calcium-based ceramics are commonly used in daily life dielectric ceramic materials, with better dielectric stability, has been widely used in electronic information, daily necessities, biomedicine, etc. . However, with the increase in the expansion and performance indicators in the application, the performance requirements of magnesium titanate calcium-based ceramic materials are also increasing, especially the dielectric constant and quality factor indicators, often requiring a stable and high quality factor of dielectric constant. . Therefore, the performance of the magnesium titanate calcium ceramic powder is to determine the fundamental factors of the processed filtered die...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/465C04B35/626
CPCC04B35/465C04B35/62605C04B35/6261C04B2235/5445C04B2235/5454C04B2235/3236C04B2235/3206C04B2235/3208C04B2235/77C04B2235/96
Inventor 朱洪伟
Owner 元颉新材料科技(浙江)有限公司
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