Unlock instant, AI-driven research and patent intelligence for your innovation.

A broadband high conductivity material and its preparation process

A high-conductivity material and preparation process technology, applied in the fields of inorganic material magnetism, inductor/transformer/magnet manufacturing, electrical components, etc., can solve the problems of communication equipment and electronic products interference, pollution of electromagnetic environment, etc., to achieve good anti-EMI effect, The effect of good anti-EMI characteristics

Active Publication Date: 2016-03-09
WUXI SPINEL MAGNETICS
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

EMI signal not only has a wide frequency range, but also has a certain amplitude, which will pollute the electromagnetic environment through conduction and radiation, and cause interference to communication equipment and electronic products

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A broadband high conductivity material and its preparation process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A broadband high-conductivity material, the amount of its main components and additives is indicated in Table 1, and its preparation process is:

[0031] 1) Preparation of calcined material

[0032] Weigh Fe according to formula 2 0 3 , MnO, ZnO and the third added component are mixed at one time by dry method. After mixing, pre-shock milling and mixing for 30 minutes is required to refine the raw material particles, so that the mixing between the components is more uniform and tighter. After pre-mixing The powder was pre-fired at a temperature of 850°C for 1.5 hours to obtain a pre-fired material;

[0033] 2) Preparation of pellets

[0034] Put the calcined material into the sand mill, add the first additive component and the second additive component in the formula amount and deionized water accounting for 50wt% of the total mass of the main component, sand mill for 1 to 1.5 hours, and pump out after sand mill. to the mixer, and add a PVA solution with a concentra...

Embodiment 2

[0038] A broadband high-conductivity material, the amount of its main components and additives is indicated in Table 1, and its preparation process is:

[0039] 1) Preparation of calcined material

[0040] Weigh Fe according to formula 2 0 3 , MnO, ZnO and the third added component are mixed at one time by dry method. After mixing, pre-shock milling and mixing for 30 minutes is required to refine the raw material particles, so that the mixing between the components is more uniform and tighter. After pre-mixing The powder was pre-fired at a temperature of 700°C for 2 hours to obtain a pre-fired material;

[0041] 2) Preparation of pellets

[0042] Put the calcined material into the sand mill, add the first additive component and the second additive component in the formula amount and deionized water accounting for 50wt% of the total mass of the main component, sand mill for 1 to 1.5 hours, and pump out after sand mill. to the mixer, and add a PVA solution with a concentrati...

Embodiment 3

[0046] A broadband high-conductivity material, the amount of its main components and additives is indicated in Table 1, and its preparation process is:

[0047] 1) Preparation of calcined material

[0048] Weigh Fe according to formula 2 0 3 , MnO, ZnO and the third added component are mixed at one time by dry method. After mixing, pre-shock milling and mixing for 30 minutes is required to refine the raw material particles, so that the mixing between the components is more uniform and tighter. After pre-mixing The powder was pre-fired at a temperature of 900°C for 2 hours to obtain a pre-fired material;

[0049] 2) Preparation of pellets

[0050]Put the calcined material into the sand mill, add the first additive component and the second additive component in the formula amount and deionized water accounting for 50wt% of the total mass of the main component, sand mill for 1 to 1.5 hours, and pump out after sand mill. to the mixer, and add a PVA solution with a concentratio...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a broadband high-conductivity material, which is composed of main components and additives, wherein, the composition of the main components is: Fe2O3? 51.8-53.2mol%, MnO? 24~27mol%, the rest is ZnO ； The additives include a first additive component, a second additive component and a third additive component, and the first additive component is CaCO3? 0.025-0.050wt%, TiO2? 0.015-0.050wt%, GeO? 0.015-0.025wt% of one or a combination of two; the second added component is SiO2? 0.008-0.012wt%, Nb2O5? 0.005-0.025wt% or NiO? 0.010-0.025wt% of one or a combination of two; the third added component is Bi2O3? 0.020-0.060wt%, MoO3? 0.010-0.040wt% or a combination of two components. Through the control of formula, additives and sintering process, the present invention obtains a 10K high magnetic permeability material whose magnetic permeability drops less than 20% at higher frequencies, which can be applied to various electronic fields for absorbing electromagnetic interference signals, and has the advantages of Good anti-EMI characteristics.

Description

technical field [0001] The invention relates to a MnZn ferrite magnetic material. Background technique [0002] With the continuous progress of electronic technology, switching power supply is developing rapidly in the direction of high frequency and high efficiency, and EMI suppression has become an important indicator of switching power supply design. EMI signals not only have a wide frequency range, but also have a certain amplitude, which will pollute the electromagnetic environment through conduction and radiation, and cause interference to communication equipment and electronic products. Therefore, how to reduce or even eliminate the EMI problem in switching power supply has become a problem that switching power supply designers are very concerned about. Soft magnetic ferrite materials with high magnetic permeability can effectively absorb electromagnetic interference signals. High magnetic permeability materials have become an indispensable part of many emerging IT t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H01F1/36C04B35/64H01F41/02
Inventor 黄舰
Owner WUXI SPINEL MAGNETICS