CN111498896A - Nano barium titanate material with low K value and high refractive index and dispersion prepared from nano barium titanate material - Google Patents
Nano barium titanate material with low K value and high refractive index and dispersion prepared from nano barium titanate material Download PDFInfo
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Abstract
The invention belongs to the technical field of inorganic non-metallic materials, and particularly relates to a low-K-value high-refractive-index nano barium titanate material, and further discloses a preparation method thereof and a nano barium titanate dispersion liquid prepared by the same. The nano barium titanate material disclosed by the invention selects a proper organic base as a template agent in a hydrothermal synthesis process, controls the mesoporous structure, crystal form and grain size of barium titanate by adjusting the content of the template agent and hydrothermal synthesis conditions, and then obtains the nano barium titanate of superfine mesoporous cubic phase with proper mesoporous structure, parameters and low K value through crystallization. The dielectric constant k value of the nano barium titanate is only 49-82, is obviously smaller than that of the nano barium titanate synthesized by the conventional hydrothermal method, namely 100-200, and has wider application field and application value.
Description
Technical Field
The invention belongs to the technical field of inorganic non-metallic materials, and particularly relates to a low-K-value high-refractive-index nano barium titanate material, and further discloses a preparation method thereof and a nano barium titanate dispersion liquid prepared by the same.
Background
Barium titanate (BaTiO)3) Has typical perovskite structure, is a base matrix material of titanate series electronic ceramics, has the characteristics of excellent high dielectric constant and low dielectric loss, has excellent piezoelectric, ferroelectric, voltage-resistant and insulating properties, and is applied to the fields of optics, thermophysics, electronics, acoustics and the likeThe ceramic material is widely applied to the manufacture of electronic elements such as pressure sensors, thermistors, capacitors, microwave devices, memory elements and the like, and becomes an important basic raw material of electronic ceramic materials.
Generally, a ferroelectric phase existing at normal temperature of barium titanate is a tetragonal phase with a high dielectric constant, which is widely used in high-capacity electronic ceramics such as M L CC, and the like, and it is reported that nano barium titanate materials with low dielectric constant and high refractive index and dispersion thereof are uniformly dispersed in epoxy resin to significantly improve backlight characteristics such as L CD, L ED, O L ED and the like, and contribute to reducing energy consumption and improving visual display effects3The hollow nanosphere material does not pay attention to the properties such as dielectric constant and the like.
For example, chinese patent CN103880066A discloses a method for preparing cubic phase nano barium titanate hollow spheres, which uses L iCl as a surfactant, silica colloidal crystals as a template, and coats barium titanate gel on the surface of the silica colloidal crystals, and then removes the silica colloidal templates by calcination to obtain the nano barium titanate hollow spheres.
For another example, chinese patent CN105329939A discloses a method for preparing size-controllable nano-scale cubic-related barium titanate, which comprises hydrolyzing titanium tetrachloride, adding mineralizer and dispersion, stirring to obtain orthotitanic acid gel, mixing with barium source, and performing hydrothermal reaction to obtain cubic phase nano-barium titanate with a particle size of about 100 nm. The nano barium titanate obtained by the method has better particle size uniformity and scale controllability, but is still a high dielectric constant barium titanate product.
It can be seen that how to prepare nano barium titanate and its dispersion liquid with low dielectric constant and high refractive index becomes a research hotspot in the field.
Disclosure of Invention
Therefore, the technical problem to be solved by the present invention is to provide a mesoporous cubic phase nano barium titanate material, which has a lower dielectric constant (K value) and a higher refractive index, so as to solve the problem of higher dielectric constant of the nano barium titanate material in the prior art;
the second technical problem to be solved by the invention is to provide a preparation method and application of the nano barium titanate material;
the third technical problem to be solved by the present invention is to provide a barium titanate dispersion prepared from the nano barium titanate material.
In order to solve the technical problems, the nano barium titanate material with low K value and high refractive index has the following properties of dielectric constant and dielectric loss tangent:
the dielectric constant K value of the nano barium titanate material in a 10GHz frequency band is 42-82, the dielectric loss tangent value is 0.0015-0.0025, and preferably, the K is 55-70;
the dielectric constant K value of the nano barium titanate material in a 24GHz frequency band is 51-79, the dielectric loss tangent value is 0.002-0.004, and the preferred K is 51-70;
the dielectric constant K value of the nano barium titanate material in a 28GHz frequency band is 38-75, the dielectric loss tangent value is 0.002-0.005, and the K is preferably 49-70.
Furthermore, the nano barium titanate material has a mesoporous cubic phase crystal structure, the full width at half maximum FWHM of a crystal plane diffraction peak of the nano barium titanate material is 0.305-0.315, the aperture of the nano barium titanate material is 2.0-2.5nm, and the pore volume of the nano barium titanate material is 0.30-0.35cm3A specific surface area of 350-2Per gram, the particle size is 10-60 nm;
preferably, the nano titanic acidThe aperture of the barium material is 2.0-2.2nm, and the pore volume is 0.30-0.33cm3Per g, specific surface area of 400-550m2Per g, the particle diameter is 20-50 nm.
The invention also discloses a method for preparing the nano barium titanate material with low K value and high refractive index, which comprises the following steps:
(1) preparing a precursor: preparing TiCl4Adding alkali liquor into the solution to adjust the pH value to be alkaline, and obtaining orthotitanic acid sol; after solid-liquid separation, adding an organic base template agent and water for mixing, and adding barium hydroxide and nano barium titanate seed crystals to obtain precursor sol for later use;
(2) hydrothermal synthesis: carrying out hydro-thermal synthesis on the prepared precursor sol at the temperature of 120-250 ℃;
(3) and (3) post-treatment: and cooling, washing, drying and roasting the synthesized barium titanate to obtain the cubic phase nano barium titanate with the needed mesoporous structure.
Specifically, in the step (1), the organic template agent includes trimethylamantadine, polyacrylic acid, or a piperidinium compound.
Preferably, the piperidine compound comprises 1, 1-dimethyl-3, 5-dimethyl piperidine and/or 1, 1-dimethyl-2, 6-dimethyl piperidine.
Specifically, in the step (1), the addition amount of the organic template agent is 0.5 wt% -30 wt% of the addition amount of the barium hydroxide.
Specifically, in the step (1):
the addition amount of the barium hydroxide is 1.5-6.0: 1;
the addition amount of the barium titanate seed crystal is 1-10 wt% of the addition amount of barium hydroxide, and preferably 2-5 wt%;
the particle size of the barium titanate seed crystal is 20-50nm, and preferably 20-40 nm.
Specifically, in the step (1), ammonia water or sodium hydroxide or potassium hydroxide solution is used for pH adjustment.
Specifically, in the step (2), the temperature of the hydrothermal synthesis step is preferably 150 ℃ to 210 ℃, and the synthesis time is preferably 1h to 10h, preferably 2h to 5 h.
Specifically, in the step (3), the temperature of the calcination step is 600-1000 ℃;
the invention also discloses a nano barium titanate dispersion liquid which comprises an organic solvent, the nano barium titanate material with low K value and high refractive index dispersed in the organic solvent, and a dispersing agent and/or a pH value regulator are/is selectively added.
Specifically, the organic solvent includes MEK, PGME and/or DMF. Preferably, the nano barium titanate dispersion has a solid content (nano barium titanate) of 10 to 45 wt%, preferably 15 to 25 wt%.
Specifically, the preparation of the dispersion comprises the following steps: mixing the obtained nano barium titanate powder with the mesoporous structure with a proper amount of solvent, dispersant and pH value regulator, homogenizing and dispersing for a certain time, and then dispersing by a sand mill to obtain dispersion solutions with different solvents and mass fractions.
The invention also discloses application of the nano barium titanate material with low K value and high refractive index or the nano barium titanate dispersion liquid in the field of preparing high-definition display reflective films.
The nano barium titanate material disclosed by the invention is prepared by selecting a proper organic template agent in a hydrothermal synthesis process, controlling the mesoporous structure, crystal form and grain size of barium titanate by adjusting the content of the template agent and hydrothermal synthesis conditions, and then crystallizing to obtain the nano barium titanate with an ultrafine mesoporous cubic phase suitable for mesoporous structure, parameters and low K value. The dielectric constant k value of the nano barium titanate material in the frequency ranges of 1GHz, 10GHz and 24GHz is only 49-82, the dielectric loss tangent value is 0.002-0.005, the dielectric constant k value is obviously less than that of the nano barium titanate synthesized by the conventional hydrothermal method, namely 100-200, and the nano barium titanate material has wider application field and application value.
The nano barium titanate material can be ground and dispersed in an organic solvent to prepare barium titanate dispersion solutions with different solvents and different solid contents, and is more suitable for application in the field of preparing high-definition display reflective films.
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In order that the present disclosure may be more readily and clearly understood, the following detailed description of the present disclosure is provided in connection with specific embodiments thereof and the accompanying drawings, in which,
FIG. 1 is a TEM image of nano barium titanate prepared in example 1;
fig. 2 is an XRD picture of nano barium titanate prepared in example 1.
Detailed Description
Example 1
The preparation method of nano barium titanate described in this embodiment includes the following steps:
(1) aqueous ammonia was added to 2.58kg of 44-46 wt% TiCl4In the solution, adjusting the pH of the system to 9 to obtain orthotitanic acid sol; carrying out solid-liquid separation on the obtained orthotitanic acid solution, then adding 36g of organic base-trimethyl amantadine, uniformly mixing, adding 1.8kg of barium hydroxide octahydrate and 27g of barium titanate with the particle size of 20-30nm as seed crystals, and fully stirring for 1.5h to obtain precursor sol;
(2) transferring the precursor solution obtained in the step (1) into a hydrothermal kettle, and carrying out hydrothermal synthesis at 200 ℃ for 6h with a stirring speed of 50rpm to obtain a barium titanate mixed solution;
(3) and (3) cooling the barium titanate solution obtained in the step (2), washing with pure water or ethanol, drying at the temperature of 120-150 ℃ for 2h, and roasting at the temperature of 800 ℃ to obtain the required nano barium titanate.
The TEM picture and the XRD picture of the nano barium titanate prepared in this example are respectively shown in fig. 1-2, which shows that the barium titanate material prepared in this example is a nano barium titanate having a mesoporous porous structure and a cubic phase crystal structure.
The nano barium titanate powder with the mesoporous structure prepared in the embodiment is mixed with a solvent DMF, a dispersant EP-2 and a pH value regulator (sodium hydroxide), and after being homogenized and dispersed for a certain time, the barium titanate powder is dispersed by a sand mill to obtain a barium titanate dispersion liquid with the mass fraction of 30%.
Example 2
The preparation method of nano barium titanate described in this embodiment includes the following steps:
(1) aqueous ammonia was added to 2.58kg of 44-46 wt% TiCl4In the solution, adjusting the pH of the system to 9 to obtain orthotitanic acid sol;carrying out solid-liquid separation on the obtained orthotitanic acid solution, then adding 27g of organic base-polyacrylic acid, adding 1.8kg of barium hydroxide octahydrate and 27g of barium titanate with the particle size of 20-30nm as seed crystals, and fully stirring for 1.5h to obtain precursor sol;
(2) transferring the precursor solution obtained in the step (1) into a hydrothermal kettle, and carrying out hydrothermal synthesis at 200 ℃ for 6h with a stirring speed of 50rpm to obtain a barium titanate mixed solution;
(3) and (3) cooling the barium titanate solution obtained in the step (2), washing with pure water or ethanol, drying at the temperature of 120-150 ℃ for 2h, and roasting at the temperature of 800 ℃ to obtain the required nano barium titanate.
Through determination, the barium titanate material prepared by the embodiment is nano barium titanate with a mesoporous porous structure and a cubic phase crystal structure.
The nano barium titanate powder with the mesoporous structure prepared in the embodiment is mixed with a solvent MEK, a dispersant EP-2 and a pH value regulator (potassium hydroxide), and after being homogenized and dispersed for a certain time, the barium titanate powder is dispersed by a sand mill to obtain a barium titanate dispersion liquid with the mass fraction of 30%.
Example 3
The preparation method of nano barium titanate described in this embodiment includes the following steps:
(1) aqueous ammonia was added to 2.58kg of 44-46 wt% TiCl4In the solution, adjusting the pH of the system to 9 to obtain orthotitanic acid sol; carrying out solid-liquid separation on the obtained orthotitanic acid solution, then adding 36g of organic base-1, 1-dimethyl-3, 5-dimethyl piperidine, adding 1.8kg of barium hydroxide octahydrate and 27g of barium titanate with the particle size of 20-30nm as seed crystals, and fully stirring for 1.5h to obtain precursor sol;
(2) transferring the precursor solution obtained in the step (1) into a hydrothermal kettle, and carrying out hydrothermal synthesis at 200 ℃ for 6h with a stirring speed of 50rpm to obtain a barium titanate mixed solution;
(3) and (3) cooling the barium titanate solution obtained in the step (2), washing with pure water or ethanol, drying at the temperature of 120-150 ℃ for 2h, and roasting at the temperature of 800 ℃ to obtain the required nano barium titanate.
Through determination, the barium titanate material prepared by the embodiment is nano barium titanate with a mesoporous porous structure and a cubic phase crystal structure.
The nano barium titanate powder with the mesoporous structure prepared in the embodiment is mixed with a solvent PGME, a dispersant EP-2 and a pH value regulator (ammonia water), and after the mixture is homogenized and dispersed for a certain time, the mixture is dispersed by a sand mill to obtain a barium titanate dispersion liquid with the mass fraction of 30%.
Example 4
(1) Aqueous ammonia was added to 2.58kg of 44-46 wt% TiCl4In the solution, adjusting the pH of the system to 9 to obtain orthotitanic acid sol; carrying out solid-liquid separation on the obtained orthotitanic acid solution, then adding 42g of organic base-trimethyl amantadine, uniformly mixing, adding 1.8kg of barium hydroxide octahydrate and 27g of barium titanate with the particle size of 20-30nm as seed crystals, and fully stirring for 1.5h to obtain precursor sol;
(2) transferring the precursor solution obtained in the step (1) into a hydrothermal kettle, and carrying out hydrothermal synthesis at 200 ℃ for 6h with a stirring speed of 50rpm to obtain a barium titanate mixed solution;
(3) and (3) cooling the barium titanate solution obtained in the step (2), washing with pure water or ethanol, drying at the temperature of 120-150 ℃ for 2h, and roasting at the temperature of 800 ℃ to obtain the required nano barium titanate.
Through determination, the barium titanate material prepared by the embodiment is nano barium titanate with a mesoporous porous structure and a cubic phase crystal structure.
The nano barium titanate powder with the mesoporous structure prepared in the embodiment is mixed with a solvent DMF, a dispersant EP-2 and a pH value regulator (ammonia water), and after being homogenized and dispersed for a certain time, the barium titanate powder is dispersed by a sand mill to obtain a barium titanate dispersion liquid with the mass fraction of 10%.
Example 5
The preparation method of nano barium titanate described in this embodiment includes the following steps:
(1) aqueous ammonia was added to 2.58kg of 44-46 wt% TiCl4In the solution, adjusting the pH of the system to 9 to obtain orthotitanic acid sol; subjecting the obtained orthotitanic acid solution to solid-liquid separation, adding 42g of organic base-1, 1-dimethyl-3, 5-dimethylpiperidine, and adding 1.8kg of barium hydroxide octahydrate and 27g of barium titanate with particle diameter of 20-30nm as raw materialsFully stirring the seed crystal for 1.5h to obtain precursor sol;
(2) transferring the precursor solution obtained in the step (1) into a hydrothermal kettle, and carrying out hydrothermal synthesis at 200 ℃ for 6h with a stirring speed of 50rpm to obtain a barium titanate mixed solution;
(3) and (3) cooling the barium titanate solution obtained in the step (2), washing with pure water or ethanol, drying at the temperature of 120-150 ℃ for 2h, and roasting at the temperature of 800 ℃ to obtain the required nano barium titanate.
Through determination, the barium titanate material prepared by the embodiment is nano barium titanate with a mesoporous porous structure and a cubic phase crystal structure.
The nano barium titanate powder with the mesoporous structure prepared in the embodiment is mixed with PGME as a solvent, DMF, EP-2 as a dispersant and an ammonia water as a pH value regulator, and after the mixture is homogenized and dispersed for a certain time, the mixture is dispersed by a sand mill to obtain a barium titanate dispersion liquid with the mass fraction of 45%.
Comparative example 1
The preparation method of barium titanate described in this comparative example includes the steps of:
(1) aqueous ammonia was added to 2.58kg of 44-46 wt% TiCl4In the solution, adjusting the pH of the system to 9 to obtain orthotitanic acid sol; carrying out solid-liquid separation on the obtained orthotitanic acid solution, adding 1.8kg of barium hydroxide octahydrate, and fully stirring for 1.5h to obtain precursor sol;
(2) transferring the precursor solution obtained in the step (1) into a hydrothermal kettle, and carrying out hydrothermal synthesis at 200 ℃ for 6h with a stirring speed of 50rpm to obtain a barium titanate mixed solution;
(3) and (3) cooling, washing and drying the barium titanate solution obtained in the step (2) to obtain cubic phase nano barium titanate.
The nano barium titanate powder with the mesoporous structure prepared in the embodiment is mixed with a solvent DMF, a dispersant EP-2 and a pH value regulator (sodium hydroxide), and after being homogenized and dispersed for a certain time, the barium titanate powder is dispersed by a sand mill to obtain a barium titanate dispersion liquid with the mass fraction of 30%.
Comparative example 2
The nano barium titanate powder prepared according to the scheme of example 1 in Chinese patent CN105329939A is used as the nano barium titanate powder in the comparative example.
Comparative example 3
The nano barium titanate powder prepared according to the scheme of example 1 in Chinese patent CN103880066A is used as the nano barium titanate powder in the comparative example.
Examples of the experiments
1. Nano barium titanate performance test
The barium titanate powders prepared in the above examples 1 to 5 and comparative examples 1 to 6 were respectively subjected to the relevant dielectric properties and material properties tests. The test method is that the material is prepared into a sheet with a flat surface, the dielectric constant and the dielectric loss tangent value of the material at 10GHZ are tested according to the standard method of Q/0500-SGC 002-2020, the dielectric constant and the dielectric loss tangent value of the material at 24GHz and 28GHz in the millimeter wave frequency band are tested according to the method of Q/0500-SGC 001-2019, and the test results are shown in Table 1.
TABLE 1 dielectric and Material Properties of examples and comparative examples
As can be seen from the data in the table above, the crystal form of the nano barium titanate powder prepared by the invention is a cubic crystal form, the full width at half maximum FWHM of the diffraction peak of the crystal face is 0.305-0.315, the aperture of the nano barium titanate is 2.0-2.5nm, and the pore volume is 0.30-0.35cm3A specific surface area of 350-2Per g, the particle diameter is 10-60 nm.
The dielectric constant k value of the nano barium titanate powder prepared by the method is 42-82/10GHz at low frequency, 38-75/28GHz at high frequency and 0.002-0.005 at the dielectric loss tangent, which is obviously less than the dielectric constant k of the nano barium titanate prepared by the traditional method in the comparative example 1, which is 100-.
2. Performance test of Nano barium titanate Dispersion
The nano barium carbonate dispersion liquids prepared in the above examples 1 to 3 and comparative example 1 were respectively tested for conventional performance according to the conventional labeling method in the art, and the test results are shown in the following table 2.
TABLE 2 Performance test results of nano barium carbonate dispersions
| Test items | Base material PET | Example 1 | Example 2 | Example 3 | Comparative example 1 |
| Transmittance% | 92.2 | 87.6 | 87.5 | 87.5 | 85.4 |
| Refractive index | - | 1.8 | 1.78 | 1.82 | 1.72 |
| Film thickness | 1um | 1um | 1um | 1um | 1um |
Therefore, the performance of the nano barium carbonate dispersion liquid can meet the performance requirement of a high-definition reflective display film, and the nano barium carbonate dispersion liquid can be used for preparing the high-performance high-definition reflective display film.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (11)
1. The nano barium titanate material with low K value and high refractive index is characterized in that the dielectric constant and the dielectric loss tangent value of the nano barium titanate material have the following properties:
the dielectric constant k value of the nano barium titanate material in a 10GHz frequency band is 42-82, and the dielectric loss tangent value is 0.0015-0.0025;
the dielectric constant k value of the nano barium titanate material in a 24GHz frequency band is 51-79, and the dielectric loss tangent value is 0.002-0.004;
the dielectric constant k value of the nano barium titanate material in a 28GHz frequency band is 38-75, and the dielectric loss tangent value is 0.002-0.005.
2. The nano barium titanate material with low K value and high refractive index as claimed in claim 1, wherein the nano barium titanate material has a mesoporous cubic phase crystal structure, a full width at half maximum FWHM of a crystal plane diffraction peak of the nano barium titanate material is 0.305-0.315, a pore diameter of the nano barium titanate material is 2.0-2.5nm, and a pore volume of the nano barium titanate material is 0.30-0.35cm3A specific surface area of 350-2Per g, the particle diameter is 10-60 nm.
3. A method for preparing the low-K high-refractive-index nano barium titanate material of claim 1 or 2, comprising the following steps:
(1) preparing a precursor: fitting for mixingPreparing TiCl4Adding alkali liquor into the solution to adjust the pH value to be alkaline, and obtaining orthotitanic acid sol; after solid-liquid separation, adding an organic base template agent and water for mixing, and adding barium hydroxide and nano barium titanate seed crystals to obtain precursor sol for later use;
(2) hydrothermal synthesis: carrying out hydro-thermal synthesis on the prepared precursor sol at the temperature of 120-250 ℃;
(3) and (3) post-treatment: and cooling, washing, drying and roasting the synthesized barium titanate to obtain the cubic phase nano barium titanate with the needed mesoporous structure.
4. The method for preparing nano barium titanate material with low K value and high refractive index as claimed in claim 3, wherein in the step (1), the organic template comprises trimethyl amantadine, polyacrylic acid or piperidine compound.
5. The method for preparing a nano barium titanate material with a low K value and a high refractive index as claimed in claim 4, wherein the piperidine derivative compound comprises 1, 1-dimethyl-3, 5-dimethylpiperidine and/or 1, 1-dimethyl-2, 6-dimethylpiperidine.
6. The method for preparing nano barium titanate material with low K value and high refractive index according to any one of claims 3 to 5, wherein in the step (1), the addition amount of the organic template agent is 0.5 wt% to 30 wt% of the addition amount of the barium hydroxide.
7. The method for preparing nano barium titanate material with low K value and high refractive index according to any one of claims 3 to 6, wherein in the step (1):
the addition amount of the barium hydroxide is 1.5-6.0: 1;
the addition amount of the barium titanate seed crystal is 1-10 wt% of the addition amount of barium hydroxide;
the grain diameter of the barium titanate seed crystal is 20-50 nm.
8. The method for preparing nano barium titanate material with low K value and high refractive index according to any one of claims 3-7, wherein in the step (3), the temperature of the calcination step is 600-1000 ℃.
9. A nano barium titanate dispersion comprising an organic solvent, and the nano barium titanate material of low K value and high refractive index according to claim 1 or 2 dispersed in the organic solvent, and optionally adding a dispersant and/or a pH regulator.
10. The nano barium titanate dispersion of claim 9, wherein the organic solvent comprises MEK, PGME and/or DMF.
11. The use of the nano barium titanate material with low K value and high refractive index of claim 1 or 2 or the nano barium titanate dispersion of claim 9 in the field of preparing high definition display reflective films.
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| CN202010335230.9A CN111498896B (en) | 2020-04-24 | 2020-04-24 | Nanometer barium titanate material with low K value and high refractive index and dispersion liquid prepared from nanometer barium titanate material |
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| CN111498896B CN111498896B (en) | 2023-05-30 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113753943A (en) * | 2021-09-22 | 2021-12-07 | 蚌埠学院 | Method for ultraviolet-synergetic synthesis of nano barium titanate powder and application thereof |
| CN114487040A (en) * | 2022-01-21 | 2022-05-13 | 山东国瓷功能材料股份有限公司 | Method for evaluating high-frequency dielectric property of ceramic powder |
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| CN1472141A (en) * | 2003-06-30 | 2004-02-04 | 山东省国腾功能陶瓷材料有限公司 | Technology for preparing high-purity nano barium titanate powder |
| CN1821087A (en) * | 2006-03-06 | 2006-08-23 | 湖北大学 | Neodymium doped bismuth titanate nano line array ferro-electric storage material and its synthetic method |
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| CN1472141A (en) * | 2003-06-30 | 2004-02-04 | 山东省国腾功能陶瓷材料有限公司 | Technology for preparing high-purity nano barium titanate powder |
| CN1821087A (en) * | 2006-03-06 | 2006-08-23 | 湖北大学 | Neodymium doped bismuth titanate nano line array ferro-electric storage material and its synthetic method |
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| 高俊双: ""水热反应中有机物模板对BaTiO3结晶形态的影响", 《中国优秀硕士学位论文全文数据库（电子期刊） 工程科技I辑》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113753943A (en) * | 2021-09-22 | 2021-12-07 | 蚌埠学院 | Method for ultraviolet-synergetic synthesis of nano barium titanate powder and application thereof |
| CN114487040A (en) * | 2022-01-21 | 2022-05-13 | 山东国瓷功能材料股份有限公司 | Method for evaluating high-frequency dielectric property of ceramic powder |
| CN114487040B (en) * | 2022-01-21 | 2024-02-06 | 山东国瓷功能材料股份有限公司 | Method for evaluating high-frequency dielectric property of ceramic powder |
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