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Method for preparing BaFe12O and BaTiO3 multiplayer nano compound film/powder

A bafe12o19 and nanocomposite technology, which is applied in the field of nanocomposite film/powder preparation, can solve the problems of poor film compactness and poor electromagnetic performance, and achieve the effects of improving wave absorption performance, reducing cost and thin thickness

Inactive Publication Date: 2010-01-13
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology allows for better methods of making absorbents with specific characteristics that are both flexible and durable while being small enough (<1 cm) thick). It has been found that this new material will have superior optical properties compared to existing products made from pure iron oxide particles alone. Additionally it's easy to make into films that resist cracking during use. These technical results help create more efficient and effective ways to produce high quality absorbants at low costs.

Problems solved by technology

This patents discuss how combining different types of metals (ferritum) together create new type of absorbent material called BFOMs. These composites exhibiting superior optoacoussis factor (EAM), reduced energy dissipation at specific frequencies, increased durable life under severe conditions, lower thermal conductive losses, higher resistence against radiation damage, wider range of wavelength response, greater flexibility than traditional methods like monocroton/polytetron, tantalum oxynaphthene, boron nitride ceramics, ferrimberbon, FeNiCuN, manganese dioxide, tungsten bronze, vanadium diatomaccharides, ammoniacal acid salts, lithiumnna, silver sulfone, polysulfonic acids, dendrimensional quantum structures containing metal atoms, and various combinations thereon. Additionally, these techniques aim to optimize the design of the absorbant material while maintaining good physical property matching between them.

Method used

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  • Method for preparing BaFe12O and BaTiO3 multiplayer nano compound film/powder
  • Method for preparing BaFe12O and BaTiO3 multiplayer nano compound film/powder

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Embodiment 1

[0031] BaFe of the present invention 12 o 19 with BaTiO 3 Not only can it be configured in any molar ratio according to actual needs, but also the BaFe prepared by the present invention 12 o 19 and BaTiO 3 The number M of layers of the nanocomposite film can also be configured arbitrarily according to actual needs. Wherein, the value range of M is: M≥1.

[0032] Such as figure 1 BaFe with the number of layers M=4 shown 12 o 19 with BaTiO 3 nanocomposite film, the BaFe 12 o 19 and BaTiO 3 The molar ratio is 95:5. It can be seen from the figure that the composite thin film consists of substrate 1, seed layer 2, and four layers of BaFe with a molar ratio of 95:5. 12 o 19 with BaTiO 3 The composition of the nanocomposite film 3 .

[0033] The concrete steps of preparing this kind of composite film are as follows:

[0034] (1) Weigh or measure Ba(NO 3 ) 2 , Fe(NO 3 ) 3 9H 2 O, C 6 h 8 o 7 and (C 6 h 9 NO) n ; Wherein, the value range of X is: 0.5≤X≤1, an...

Embodiment 2

[0048] figure 2 shows the number of layers M=4, and BaFe 12 o 19 with BaTiO 3 Schematic diagram of the structure of alternating nanocomposite films with molar ratios of 95:5 and 90:10, respectively. It can be seen from the figure that the film is sequentially composed of substrate 1, BaFe with a molar ratio of 95:5 12 o 19 and BaTiO 3 The seed layer 2, BaFe with a molar ratio of 95:5 12 o 19 and BaTiO 3 Composite film 3, BaFe with a molar ratio of 90:10 12 o 19 and BaTiO 3 Composite film 4, BaFe with a molar ratio of 95:5 12 o 19 and BaTiO 3 Composite thin film 3, and BaFe with a molar ratio of 90:10 12 o 19 and BaTiO 3 Composite film 4 constitutes.

[0049] The concrete steps of preparing this four-layer alternating nanocomposite film are as follows:

[0050] The steps and other conditions of (1), (2) are all the same as in Example 1, and the difference is only in:

[0051] (3) by BaFe 12 o 19 with BaTiO 3 The molar ratios are 95:5 and 90:10 respectivel...

Embodiment 3

[0057] image 3 shows the number of layers M=4, on BaFe 12 o 19 with BaTiO 3 Schematic diagram of the structure of the nanogradient composite film with molar ratios of 100:5, 100:10, 100:15 and 100:20, respectively. It can be seen from the figure that the film is sequentially composed of substrate 1, BaFe with a molar ratio of 100:5 12 o 19 and BaTiO 3 The seed layer 2, BaFe with a molar ratio of 100:5 12 o 19 and BaTiO 3 Composite film 3, BaFe with a molar ratio of 100:10 12 o 19 and BaTiO 3Composite film 4, BaFe with a molar ratio of 100:15 12 o 19 and BaTiO 3 Composite thin film 5, and BaFe with a molar ratio of 100:20 12 o 19 and BaTiO 3 Composite film 6 constitutes.

[0058] The steps and other conditions for preparing this kind of film are all the same as in Example 2, the only difference is that in step (3), it is necessary to prepare four parts with molar ratios of 100:5, 100:10, 100:15 and 100: 20BaFe 12 o 19 and BaTiO 3 Composite sol; In step (4)...

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Abstract

The invention discloses a method for preparing a BaFe12O and BaTiO3 multiplayer nano compound film/powder, which comprises the steps of preparing a transparent sol of BaFe12O19, a transparent sol of BaTiO3 and a compound sol of BaFe12O19 and BaTiO3 and the like, not only overcomes the defects existing in the conventional sol-gel process, but also prepares a wave absorbing material with light weight, wide frequency and thinness. The film prepared by the method has the advantages of fully having compound advantages, excellent comprehensive electromagnetic property, and doubling the wave-absorbing performance, along with smoothness, compactness and no crack. The nano compound film/powder of barium ferrite and barium titanate can also be used in the fields of magnetic records, drivers, switchers, sensors, microwave devices and the like, and due to the use of the nano compound film/powder, the property of the corresponding device, equipment or system can be greatly improved. The compound film/powder can replace a ferrite block, and the cost is greatly reduced.

Description

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Claims

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Application Information

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Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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