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Nanofiber, preparation method thereof and embedded capacitive material

A nanofiber and nanoconductive technology, which is applied in the field of embedded capacitor materials, can solve the problems such as the inability to increase the dielectric constant of materials, and achieve the effects of loose process conditions, increased dielectric constant, and increased charge polarization

Inactive Publication Date: 2019-09-06
SHENZHEN INST OF ADVANCED TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this embedded dielectric material also has obvious disadvantages, mainly because it cannot improve the dielectric constant of the material.

Method used

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  • Nanofiber, preparation method thereof and embedded capacitive material
  • Nanofiber, preparation method thereof and embedded capacitive material
  • Nanofiber, preparation method thereof and embedded capacitive material

Examples

Experimental program
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Effect test

preparation example Construction

[0035] Specifically, see image 3 , the preparation method of the nanofiber comprises the steps:

[0036] S10. Prepare a first solution containing nano conductive material.

[0037] Specifically, the nano conductive material is prepared first; then the nano conductive material is added into an organic solvent to stir and disperse to obtain the first solution. Wherein, the nano-conductive material can be selected from metal nano-conductive particles, carbon nanotubes and / or graphene; the organic solvent can be selected from acetic acid, ethylene glycol methyl ether, isopropanol and the like.

[0038] In the specific scheme, the preparation of metal nano conductive particles: the metal nano conductive particles are prepared by liquid phase reduction method, wherein ascorbic acid, sodium borohydride, hydrazine hydrate, ethylene glycol, etc. are selected as reducing agents, and metal salts such as chloroauric acid are selected. , Ferrous chloride, ferrous sulfate heptahydrate, c...

Embodiment 1

[0054] Example 1: Ag@BST / PVDF composite material

[0055] (1), the AgNO 3 Dissolve PVP in ethylene glycol, ultrasonically for 10-60 minutes, after it is completely dissolved, add it to a three-necked flask, heat up to 130°C, heat in an oil bath for 10-40 minutes, and pour the suspension on it after it has completely reacted Go, wash the remaining nano-Ag particles twice with ethanol, and then disperse them in acetic acid, called the first solution, for use.

[0056] (2), dissolving strontium acetate and barium acetate in acetic acid, stirring magnetically for 10 to 30 minutes, called solution B, for use; pouring tetrabutyl titanate and acetylacetone into a beaker, stirring magnetically for 10 to 30 minutes, and then Add the above solution B, and stir magnetically for 20-40 minutes to obtain the second solution.

[0057] (3) Add the second solution to the first solution, stir magnetically for 20-40 minutes, then add PVP (polyvinylpyrrolidone), stir magnetically for 12-24 hour...

Embodiment 2

[0062] Embodiment 2: Cu@BST / epoxy resin composite material

[0063] (1), the CuCl 2 Dissolve PVP in ethylene glycol, ultrasonically for 10-60 minutes, after it is completely dissolved, add it to a three-necked flask, heat up to 140°C, heat in an oil bath for 30-120 minutes, and pour the suspension on it after it has completely reacted Next, the remaining nano-Cu particles were washed twice with ethanol, and then dispersed in acetic acid, called the first solution, for use.

[0064] (2) Dissolve strontium acetate and barium acetate in acetic acid, stir magnetically for 10-30min, call it B solution, and set aside; pour tetrabutyl titanate and acetylacetone into a beaker, stir magnetically for 10-30min, Then add the above B solution, and magnetically stir for 20min-40min to obtain the second solution.

[0065] (3) Add the second solution to the first solution, stir magnetically for 20-40 minutes, then add PVP (polyvinylpyrrolidone), stir magnetically for 12-24 hours, and call i...

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Abstract

The invention discloses nanofiber which comprises a nanofiber body prepared from a mixture through a static spinning process. The mixture comprises a precursor solution of a perovskite structure material and a nano conductive material doped in the precursor solution. The invention further discloses a preparation method of the nanofiber and the embedded capacitive material comprising the nanofiber.When the nanofiber is applied in the embedded capacitive material, dielectric constant and no increase of dielectric loss are ensured; by adding conductive particle filler, interface polarization canbe effectively improved, and migration ability of charge inside polymer can be inhibited; under externally-applied field intensity, polarization degree of a composite material is increased, and puncture field intensity and comprehensive performance of the composition material are improved.

Description

technical field [0001] The invention belongs to the technical field of embedding capacitor materials, and in particular relates to a nanofiber and a preparation method thereof, and also relates to an embedded capacitor material containing the nanofiber. Background technique [0002] With the rapid development of electronic information technology, electronic products tend to be more miniaturized, highly integrated and combined with multiple functions to meet the needs of users. In order to continuously meet the needs of the development trend of small, light, thin, high performance and high functionality of electronic products, electronic components tend to be more ultra-small and ultra-thin, and printed circuit boards tend to be more high-precision graphics and thin multilayered. It is more and more difficult to arrange and install a large number of components on such a printed circuit board. Therefore, a large number of embeddable passive components are embedded in the prin...

Claims

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Application Information

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IPC IPC(8): D01F9/08D01F1/09H01G4/16
CPCD01F1/09D01F9/08H01G4/16
Inventor 于淑会高春波罗遂斌孙蓉
Owner SHENZHEN INST OF ADVANCED TECH
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