Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Anti-electromagnetic interference magnetic flexible patch and preparation method thereof

An anti-electromagnetic interference, patch technology, applied in the manufacture of inductors/transformers/magnets, magnetic materials, magnetic objects, etc., can solve the problems of weakening the receiving sensitivity of the system antenna 2, shortening the reading and writing distance of electronic tags, and not being light and easy to use. , to achieve the effect of light and simple use, easy industrial production, and good patch flexibility

Active Publication Date: 2016-04-06
HUNAN AEROSPACE MAGNET & MAGNETO
View PDF5 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the NFC identification system is sensitive to some media such as water and metal; refer to figure 1 , when the radio frequency signal propagates on the surface of these media (such as the metal plate 1) or inside, the divergence of the magnetic beam will cause an induced eddy current to form on the surface of the metal plate 1, weaken the receiving sensitivity of the system antenna 2, and shorten the reading and writing distance of the electronic tag, thereby affecting operation of the whole system
[0004] The anti-electromagnetic interference magnetic flexible patch is an object directly embedded between the metal plate and the electronic tag, which can eliminate the influence of some sensitive media such as water and metal on the NFC identification system. The existing anti-electromagnetic interference magnetic flexible patch is due to the production material As well as the influence of processing technology, under the premise of ensuring that the patch can normally sense the RF signal, the thickness of the patch is above 0.3mm, which is not light enough to use

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
  • Anti-electromagnetic interference magnetic flexible patch and preparation method thereof
  • Anti-electromagnetic interference magnetic flexible patch and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The anti-electromagnetic interference magnetic flexible patch of this embodiment is composed of the following components:

[0028] Flat soft magnetic alloy powder Fe prepared by ball milling with a mass fraction of 90% 85 Si 9 al 6 , where 85, 9 and 6 represent the weight percentages of Fe element, Si element and Al element respectively; Fe 85 Si 9 al 6 The particle size is 50-100μm, the thickness is 0.5-1μm; the mass fraction is 9.9% propylene-ethylene copolymer (VM6102 from Exxon Mobil, USA); the mass fraction is 0.1% stearic acid, stearic acid is used as lubricant .

[0029] The preparation method of the anti-electromagnetic interference magnetic flexible patch of this embodiment includes the following steps:

[0030] (1) Flat soft magnetic alloy powder Fe prepared by ball milling 85 Si 9 al 6 Put it in a vacuum drying oven, dry it at 150°C for 1 hour, and take it out after cooling;

[0031] (2) Using a vibrating sieve, the flat soft magnetic alloy powder F...

Embodiment 2

[0037] The anti-electromagnetic interference magnetic flexible patch of this embodiment is composed of the following components:

[0038] Flat soft magnetic alloy powder Fe prepared by ball milling with a mass fraction of 85% 90 Si 7 Cr 3 , where 90, 7 and 3 represent the weight percent of Fe element, Si element and Cr element respectively; Fe 90 Si 7 Cr 3 The particle size is 30-75μm, the thickness is 0.5-1μm, the mass fraction is 14.9% propylene-ethylene copolymer (VM6102 from ExxonMobil, USA); the mass fraction is 0.1% paraffin oil, and the paraffin oil is used as a lubricant.

[0039] The preparation method of the anti-electromagnetic interference magnetic flexible patch of this embodiment includes the following steps:

[0040] (1) Flat soft magnetic alloy powder Fe prepared by ball milling 90 Si 7 Cr 3 Put it in a vacuum drying oven, dry it at 100°C for 2 hours, and take it out after cooling;

[0041] (2) Using a vibrating sieve, the flat soft magnetic alloy powd...

Embodiment 3

[0047] The anti-electromagnetic interference magnetic flexible patch of this embodiment is composed of the following components:

[0048] Flat soft magnetic alloy powder Fe prepared by ball milling with a mass fraction of 85% 87 Si 10 Cr 1 Ni 2 , where 87, 10, 1 and 2 represent the weight percentages of Fe element, Si element, Cr element and Ni element respectively; Fe 87 Si 10 Cr 1 Ni 2 The particle size is 75-150μm, and the thickness is 1-1.5μm; the mass fraction is 14.8% propylene-ethylene copolymer (select VM6102 from ExxonMobil, USA); the mass fraction is 0.2% zinc stearate, zinc stearate as a lubricant.

[0049] The preparation method of the anti-electromagnetic interference magnetic flexible patch of this embodiment includes the following steps:

[0050] (1) Flat soft magnetic alloy powder Fe prepared by ball milling 87 Si 10 Cr 1 Ni 2 Put it in a vacuum drying oven, dry it at 200°C for 1 hour, and take it out after cooling;

[0051] (2) Using a vibrating s...

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
particle diameteraaaaaaaaaa
thicknessaaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses an anti-electromagnetic interference magnetic flexible patch and a preparation method thereof. The patch comprises the following components by mass fraction: 85%-90% of flat soft magnetic alloy powder Fe<x>Si<Y>M<z>, 9.9%-14.9% of a polyolefin elastomer POE and 0.1%-0.2% of a lubricant, wherein the flat soft magnetic alloy powder Fe<x>Si<Y>M<z> is prepared by ball-milling; M is selected from one or more of Al, Cr or Ni; x, y and z represent weight percents of an Fe element, an Si element and an M element respectively; x is smaller than or equal to 90 and greater than or equal to 80; y is smaller than or equal to 10 and greater than or equal to 5; z is smaller than or equal to 10 and greater than or equal to 2; and the sum of the mass fractions of the flat soft magnetic alloy powder Fe<x>Si<Y>M<z>, the polyolefin elastomer POE and the lubricant is 100%. The invention further discloses the preparation method of the anti-electromagnetic interference magnetic flexible patch. The thickness of the anti-electromagnetic interference magnetic flexible patch can reach 0.13mm; and the anti-electromagnetic interference magnetic flexible patch is light, simple and convenient to use.

Description

technical field [0001] The invention relates to an anti-electromagnetic interference magnetic flexible patch and a preparation method thereof. Background technique [0002] In recent years, Near Field Communication (NFC) technology has been developed rapidly and widely used. NFC is a short-range wireless communication technology that enables electronic devices to perform simple and secure data transmission without contact. It is developed from the integration of non-contact radio frequency identification (RFID) technology. It was jointly developed by Sony, Philips, Nokia and other companies in 2003. It is mainly used in mobile phones, POS machines, barcode scanners, radio frequency identification readers, etc. wireless communication between electronic devices. The operating frequency of the NFC system is 13.56MHz, the frequency bandwidth is about 2MHz, and the communication range is 0-20cm. [0003] NFC technology is widely used in many fields such as mobile payment, all-...

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 Applications(China)
IPC IPC(8): H01F1/147H01F41/02G06K19/077B22F1/00
CPCG06K19/07771H01F1/14783H01F41/0266B22F1/10
Inventor 唐璐赵宝宝胡盛青肖磊姜明莉
Owner HUNAN AEROSPACE MAGNET & MAGNETO
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com