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High-magnetic-conductivity wave-absorbing sheet and tape-casting slurry and preparation method therefor

A technology of casting slurry and high magnetic permeability, which is applied in the direction of shielding materials, magnetic field/electric field shielding, electrical components, etc. No high problems, to achieve the effect of improving quality and flexibility, resistivity, good wettability, high quality and magnetic permeability

Active Publication Date: 2016-06-15
SHENZHEN PENGHUI FUNCTIONAL MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art, to provide a high-permeability wave-absorbing sheet, its preparation method and its casting slurry, so as to solve the technical problem that the magnetic permeability of the existing wave-absorbing sheet is not high
[0009] The purpose of the present invention is to provide an electronic component containing a wave-absorbing sheet to solve the technical problem of unsatisfactory performance of the electronic component due to the low magnetic permeability of the existing wave-absorbing sheet

Method used

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  • High-magnetic-conductivity wave-absorbing sheet and tape-casting slurry and preparation method therefor
  • High-magnetic-conductivity wave-absorbing sheet and tape-casting slurry and preparation method therefor
  • High-magnetic-conductivity wave-absorbing sheet and tape-casting slurry and preparation method therefor

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preparation example Construction

[0037] In another aspect, the embodiment of the present invention also provides a preparation method of the high magnetic permeability wave-absorbing sheet of the embodiment of the present invention described above. In one embodiment, the process flow of the preparation method of the high magnetic permeability wave-absorbing sheet in the embodiment of the present invention is as follows figure 2 As shown, it includes the following steps:

[0038] Step S01. Obtain the components of the casting slurry of the high magnetic permeability wave-absorbing sheet Raw materials: Weigh the components contained in the casting slurry of the high-magnetic permeability wave-absorbing sheet as described above, including soft magnetic alloy powder Body, organic insulating elastomer, low-volatile organic solvent, plasticizer, dispersant component raw material;

[0039] Step S02. Prepare a mixed solution containing organic insulating elastomer, low-volatile organic solvent, plasticizer, and dis...

Embodiment 1

[0053] This embodiment provides a high-permeability wave-absorbing sheet, its casting slurry, and its preparation method. The components in parts by weight included in the casting slurry of the high magnetic permeability wave-absorbing sheet in this embodiment are:

[0054]

[0055] The preparation method of the high magnetic permeability wave-absorbing sheet of the present embodiment is as follows:

[0056] Step S11. According to Example 1, the components contained in the casting slurry of the high magnetic permeability wave-absorbing sheet were weighed, including soft magnetic alloy powder, organic insulating elastomer, low-volatile organic solvent, plasticizer, dispersion agent component raw materials;

[0057] Step S12. The organic insulating elastomer, low-volatile organic solvent, plasticizer, and dispersant weighed in step S11 are heated and stirred at 80° C. to obtain a mixed solution;

[0058] Step S13. The soft magnetic alloy powder weighed in step S11 is ball-m...

Embodiment 2

[0061] This embodiment provides a high-permeability wave-absorbing sheet, its casting slurry, and its preparation method. The components in parts by weight included in the casting slurry of the high magnetic permeability wave-absorbing sheet in this embodiment are:

[0062]

[0063] The preparation method of the high magnetic permeability wave-absorbing sheet of the present embodiment is as follows:

[0064] Step S21. According to this embodiment 2, the components contained in the casting slurry of the high magnetic permeability wave-absorbing sheet were weighed, including soft magnetic alloy powder, organic insulating elastomer, low-volatile organic solvent, plasticizer, dispersion agent component raw materials;

[0065] Step S22. The organic insulating elastomer, low-volatile organic solvent, plasticizer, and dispersant weighed in step S21 are heated and stirred at 70° C. to obtain a mixed solution;

[0066] Step S23. The soft magnetic alloy powder weighed in step S21 i...

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Abstract

The invention relates to a high-magnetic-conductivity wave-absorbing sheet and tape-casting slurry and a preparation method therefor. The tape-casting slurry for the high-magnetic-conductivity wave-absorbing sheet comprises the following ingredients in parts by weight: 80-85 parts of soft magnetic alloy powder, 8-12 parts of organic insulating elastic body, 3-5 parts of nonvolatile organic solvent, 2-3 parts of plasticizer and 1-3 parts of dispersing agent. The high-magnetic-conductivity wave-absorbing sheet is molded from the tape-casting slurry through a tape-casting process. The tape-casting slurry for the high-magnetic-conductivity wave-absorbing sheet has high wettability for the soft magnetic alloy powder; the prepared wave-absorbing sheet has high magnetic-conductivity, high resistivity and high flexibility; in addition, the preparation method is easy to control; and the prepared wave-absorbing sheet is high in yield and stable in performance.

Description

technical field [0001] The invention belongs to the technical field of electronic component materials, and in particular relates to a high-permeability wave-absorbing sheet slurry, a high-magnetic-permeability wave-absorbing sheet and a preparation method thereof. Background technique [0002] Near Field Communication technology (NearFieldCommunication, NFC) is initiated by Philips and jointly launched by famous manufacturers such as Nokia and Sony. It uses mobile phones as the carrier and combines non-contact IC card applications in mobile phones. Cards, readers, point-to-point Three application modes, realizing mobile payment, data transmission, point exchange, electronic ticketing, identification, anti-counterfeiting, advertising and other technical services for various applications. [0003] The specific application of NFC technology can be divided into the following three types: NFC mobile phone terminal can be simulated as an ordinary contactless card, which is mainly ...

Claims

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Application Information

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IPC IPC(8): H05K9/00
CPCH05K9/0075
Inventor 李立星
Owner SHENZHEN PENGHUI FUNCTIONAL MATERIAL CO LTD
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