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

A kind of nanocrystalline magnetic sheet and its preparation method and application

A technology of nanocrystalline and nanocrystalline strips, which is applied in the manufacture of inductors/transformers/magnets, electrical components, circuits, etc., can solve the problems of high heating of magnetic sheets and high heating of charging magnetic sheets, and achieve high quality factor Q and eddy current loss Low temperature rise and obvious effect

Active Publication Date: 2020-09-01
HENGDIAN GRP DMEGC MAGNETICS CO LTD
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The above-mentioned magnetic sheet preparation methods all have the problem of excessive heating of the charging magnetic sheet
Therefore, it is of great significance for this field to develop a preparation process that can solve the problem of excessive heating of magnetic sheets

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 kind of nanocrystalline magnetic sheet and its preparation method and application
  • A kind of nanocrystalline magnetic sheet and its preparation method and application
  • A kind of nanocrystalline magnetic sheet and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] The method for preparing the nanocrystalline magnetic sheet in this embodiment is as follows:

[0070] (1) Divide the purchased nanocrystalline strip (20kg / roll) into small rolls (1kg / roll), and anneal the wound nanocrystalline strip: the annealing temperature is 550°C, and the holding time is 80min. The total heating and cooling time is 10 h, and the annealed nanocrystalline ribbon is obtained.

[0071] (2) laminating the annealed nanocrystalline strips described in step (1), comprising: getting a piece of nanocrystalline strips with double-sided adhesive on the dark side, attaching a silica gel mucous membrane on one side of the bright side, and Peel off the protective film of the double-sided adhesive on the nanocrystalline tape, and take the nanocrystalline tape as the base surface; get another nanocrystalline tape with the double-sided adhesive attached on the dark side and peel off the nanocrystalline tape Put on the protective film of double-sided adhesive, stic...

Embodiment 2

[0078] The method for preparing the nanocrystalline magnetic sheet in this embodiment is as follows:

[0079] (1) Divide the purchased nanocrystalline strip (20kg / roll) into small rolls (1kg / roll), and anneal the wound nanocrystalline strip: the annealing temperature is 550°C, and the holding time is 80min. The total time of temperature rise and fall is 10h, and the annealed nanocrystalline ribbon is obtained;

[0080] (2) laminating the annealed nanocrystalline strips described in step (1), comprising: getting a piece of nanocrystalline strips with double-sided adhesive on the dark side, attaching a silica gel mucous membrane on one side of the bright side, and Peel off the protective film of the double-sided adhesive on the nanocrystalline tape, and take the nanocrystalline tape as the base surface; get another nanocrystalline tape with the double-sided adhesive attached on the dark side and peel off the nanocrystalline tape Put on the protective film of double-sided adhesi...

Embodiment 3

[0086] The method for preparing the nanocrystalline magnetic sheet in this embodiment is as follows:

[0087] (1) Divide the purchased nanocrystalline strip (20kg / roll) into small rolls (1kg / roll), and anneal the wound nanocrystalline strip: the annealing temperature is 550°C, and the holding time is 80min. The total time of temperature rise and fall is 10h, and the annealed nanocrystalline ribbon is obtained;

[0088] (2) laminating the annealed nanocrystalline strips described in step (1), comprising: getting a piece of nanocrystalline strips with double-sided adhesive on the dark side, attaching a silica gel mucous membrane on one side of the bright side, and Peel off the protective film of the double-sided adhesive on the nanocrystalline tape, and take the nanocrystalline tape as the base surface; get another nanocrystalline tape with the double-sided adhesive attached on the dark side and peel off the nanocrystalline tape Put on the protective film of double-sided adhesi...

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

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention provides a nanocrystalline magnetic sheet and a preparation method and application thereof. The preparation method comprises the steps that 1) nanocrystalline strips are subjected to annealing treatment, and the annealed nanocrystalline strips are obtained; 2) according to the required number of nanocrystalline layers, the annealed nanocrystalline strips fit one another, a nanocrystalline strip after fitting is obtained, and silica gel adhesive film adheres to the upper and lower surfaces of the nanocrystalline strip after fitting; 3) the nanocrystalline strip after fitting is broken, and the nanocrystalline strip with cracks is obtained; 4) the silica gel adhesive film on the upper surface of the nanocrystalline strip with the cracks is removed, the nanocrystalline is cut into separated unit cells by a mold, the silica gel adhesive film on the lower surface of the nanocrystalline strip is not cut off, and the cut nanocrystalline is obtained; 5) the silica gel adhesive film on the lower surface of the cut nanocrystalline is removed, film is attached to the upper and lower surfaces of the nanocrystalline, and the nanocrystalline magnetic sheet is obtained. The imaginary part of the magnetic conductivity of the nanocrystalline magnetic sheet prepared by adopting the method is low, the quality factor is high, and heating is low.

Description

technical field [0001] The invention belongs to the field of magnetic materials and relates to a magnetic sheet, in particular to a nanocrystalline magnetic sheet and its preparation method and application. Background technique [0002] Since the gradual popularization of portable electronic products such as mobile phones and notebooks, the "light" and thin design concept has been leading the development direction of the market. Major manufacturers are also constantly strengthening technology research and development, trying to make portable electronic products thinner, wireless charging mode If the group wants to implant it into portable electronic products as a built-in device, the magnetic isolation sheet that plays a key role must be "light and thin". [0003] Amorphous and nanocrystalline strips are solid alloys formed by ultra-rapid solidification to form thin strips with a thickness in the range of 15-35 μm. When the alloy is solidified, the atoms have no time to arra...

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): H01F41/02
CPCH01F41/02
Inventor 顾小建
Owner HENGDIAN GRP DMEGC MAGNETICS CO LTD