CN105469922A - Anti-electromagnetic interference magnetic flexible patch and preparation method thereof - Google Patents
Anti-electromagnetic interference magnetic flexible patch and preparation method thereof Download PDFInfo
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- CN105469922A CN105469922A CN201510853276.9A CN201510853276A CN105469922A CN 105469922 A CN105469922 A CN 105469922A CN 201510853276 A CN201510853276 A CN 201510853276A CN 105469922 A CN105469922 A CN 105469922A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/147—Alloys characterised by their composition
- H01F1/14766—Fe-Si based alloys
- H01F1/14775—Fe-Si based alloys in the form of sheets
- H01F1/14783—Fe-Si based alloys in the form of sheets with insulating coating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
- G06K19/07771—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card the record carrier comprising means for minimising adverse effects on the data communication capability of the record carrier, e.g. minimising Eddy currents induced in a proximate metal or otherwise electromagnetically interfering object
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
- H01F41/0266—Moulding; Pressing
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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
The present invention relates to a kind of electromagnetism interference magnetic flexible patch and preparation method thereof.
Background technology
In recent years, near-field communication (NearFieldCommunication, NFC) technology is rapidly developed and extensive use.NFC is a kind of in-plant wireless communication technology, and electronic equipment can be made to carry out the transfer of data of simple safety again in the non-contact case.It is developed by non-contact radio-frequency identification (RFID) Technology Integration, developed jointly by companies such as Sony, Philip, Nokias in 2003, be mainly used in the radio communication between the various electronic such as mobile phone, POS, barcode scanner, radio-frequency identification reader/writer.The operating frequency of NFC system is 13.56MHz, and frequency bandwidth is about 2MHz, and communication range is 0-20cm.
The salient features such as NFC technique is safe with it, reliable, quick are widely used in the various fields such as mobile payment, all-purpose card, gate control system, thing UNICOM letter.But NFC recognition system is more responsive to some Media Ratios such as water, metal; With reference to Fig. 1, radiofrequency signal is when these dielectric surfaces (as metallic plate 1) or internal communication, and flux is dispersed and metallic plate 1 surface can be caused to form induced electricity eddy current, the receiving sensitivity of attenuation systems antenna 2, the reading/writing distance of electronic tag is shortened, and then affects the operation of whole system.
Electromagnetism interference magnetic flexible patch is the object between a kind of direct embedding metallic plate and electronic tag, some sensitive medias such as water, metal can be eliminated affect NFC recognition system, existing electromagnetism interference magnetic flexible patch is owing to making the impact of material and processing technology aspect, can under the prerequisite of normal induction radiofrequency signal at guarantee paster, the thickness of paster, all at more than 0.3mm, uses not lightly easy.
Summary of the invention
Technical problem to be solved by this invention is, overcomes the deficiency of above-mentioned background technology, provides a kind of thickness to reach 0.13mm, uses lightly easy electromagnetism interference magnetic flexible patch and preparation method thereof.
The present invention solves a kind of electromagnetism interference magnetic flexible patch of the technical scheme that its technical problem adopts, and is made up of: the flat soft magnetic alloy powder Fe that mass fraction 85%-90% is prepared through ball milling following component
xsi
ym
z, M is selected from one or more in Al, Cr or Ni, and wherein x, y and z represent the percetage by weight of Fe element, Si element and M element respectively, 80≤x≤90,5≤y≤10,2≤z≤10; The polyolefin elastomer of mass fraction 9.9%-14.9%; The lubricant of mass fraction 0.1%-0.2%; Flat soft magnetic alloy powder Fe
xsi
ym
z, polyolefin elastomer and lubricant mass fraction sum be 100%.
Further, described flat soft magnetic alloy powder Fe
xsi
ym
zparticle diameter be 30-150 μm, thickness is 0.5-1.5 μm.
Further, described flat soft magnetic alloy powder Fe
xsi
ym
zparticle diameter be 50-120 μm, thickness is 0.6-1.2 μm.
Further, described flat soft magnetic alloy powder Fe
xsi
ym
zparticle diameter be 80-100 μm, thickness is 0.8-1.0 μm.
Further, described polyolefin elastomer is propylene-ethylene copolymers.
Further, described lubricant is paraffin oil, stearic acid or stearate.
Further, described stearate is zinc stearate.
The present invention solves the preparation method of a kind of electromagnetism interference magnetic flexible patch of the technical scheme that its technical problem adopts, and comprises the following steps:
(1) the flat soft magnetic alloy powder Fe prepared by ball milling
xsi
ym
zput into vacuum drying chamber, dry 1-2h at 100 DEG C of-200 DEG C of temperature, take out after cooling;
(2) use reciprocating sieve by the flat soft magnetic alloy powder Fe of step (1) gained
xsi
ym
zsieve, filter out the powder that particle diameter is 30-150 μm;
(3) take appropriate polyolefin elastomer to put into two roller mill and plastify, running roller temperature is 50-60 DEG C, fusion time is 5-10min, make the coated running roller equably of the polyolefin elastomer after plasticizing, the linear velocity that running roller rotates is 15-17m/min, and the level interval of two running rollers is 0-3mm;
(4) by the flat soft magnetic alloy powder Fe taken in right amount after step (2) screening
xsi
ym
zpowder after weighing slowly is joined in the polyolefin elastomer be coated on running roller equably, mixing formation paster is rotated by running roller, the linear velocity that running roller rotates is 9-11m/min, running roller temperature is 50-60 DEG C, mixing time is 15min-30min, and the level interval of two running rollers is 1-3mm;
(5) take appropriate lubricant to add in the paster that step (4) makes, the quality that adds of lubricant accounts for polyolefin elastomer, soft magnetic alloy powder Fe
xsi
ym
zwith the 0.1%-0.2% of lubricant gross mass, in step (3), the quality that adds of polyolefin elastomer accounts for polyolefin elastomer, soft magnetic alloy powder Fe
xsi
ym
zwith the 9.9%-14.9% of lubricant gross mass, soft magnetic alloy powder Fe in step (4)
xsi
ym
zthe quality that adds account for polyolefin elastomer, soft magnetic alloy powder Fe
xsi
ym
zwith the 85%-90% of lubricant gross mass; By the soft magnetic alloy powder Fe in paster
xsi
ym
z, polyolefin elastomer and mix lubricant even, running roller temperature is down to 20-30 DEG C, adjustment running roller linear velocity is to 3-5m/min, according to required paster thickness adjustment running roller spacing, with blade, paster level on running roller is scratched, then along designated port direction, paster is taken off from running roller, the electromagnetism interference magnetic flexible patch of desired thickness can be obtained.
Further, in step (2), filtering out particle diameter is that the concrete grammar of the powder of 30-150 μm is as follows: first filter out by 500 object screen clothes the powder that particle diameter is greater than 30 μm, then filters out by 100 object screen clothes the powder that particle diameter is less than 150 μm, namely obtains the powder that particle diameter is 30-150 μm; Or first filter out by 100 object screen clothes the powder that particle diameter is less than 150 μm, then filter out by 500 object screen clothes the powder that particle diameter is greater than 30 μm, namely obtain the powder that particle diameter is 30-150 μm.
Further, in step (6), by the soft magnetic alloy powder Fe in paster
xsi
ym
z, polyolefin elastomer and the uniform concrete grammar of mix lubricant as follows: with blade, paster is cut off from running roller, puts into running roller after playing triangle bag again and roll, repeatedly at least twice.
Compared with prior art, advantage of the present invention is as follows: the electromagnetism interference magnetic flexible patch of preparation adopts halogen-free environmental formula, the preparation method's technique provided is simple, be easy to realize industrialization produce, paster pliability is good simultaneously, under the prerequisite ensureing electronic tag proper communication, and the thinnest 0.13mm that reaches of its thickness, use lightly easy, there is wide application market.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that in prior art, NFC recognition system is disturbed by metallic plate.
Fig. 2 is the schematic diagram that embodiment of the present invention electromagnetism interference magnetic flexible patch elimination metallic plate disturbs NFC recognition system.
In figure: 1-metallic plate, 2-system antenna, 3-electromagnetism interference magnetic flexible patch.
Embodiment
Below in conjunction with drawings and the specific embodiments, the present invention is described in further detail.
embodiment 1
The electromagnetism interference magnetic flexible patch of the present embodiment is made up of following component:
The flat soft magnetic alloy powder Fe that mass fraction 90% is prepared through ball milling
85si
9al
6, wherein 85,9 and 6 percetages by weight representing Fe element, Si element and Al element respectively; Fe
85si
9al
6particle diameter be 50-100 μm, thickness is 0.5-1 μm; The propylene-ethylene copolymers (selecting the VM6102 of Exxon Mobil) of mass fraction 9.9%; The stearic acid of mass fraction 0.1%, stearic acid makes lubricant.
The preparation method of the electromagnetism interference magnetic flexible patch of the present embodiment comprises the following steps:
(1) the flat soft magnetic alloy powder Fe prepared by ball milling
85si
9al
6put into vacuum drying chamber, dry 1h at 150 DEG C of temperature, take out after cooling;
(2) use reciprocating sieve by the flat soft magnetic alloy powder Fe of step (1) gained
85si
9al
6sieve, first filter out by 300 object screen clothes the powder that particle diameter is greater than 50 μm, then filter out by 150 object screen clothes the powder that particle diameter is less than 100 μm, obtain the powder that particle diameter is 50-100 μm;
(3) take appropriate propylene-ethylene copolymers to put into two roller mill and plastify, running roller temperature is 50 DEG C, and fusion time is 6min, makes the coated running roller equably of the propylene-ethylene copolymers after plasticizing, the linear velocity that running roller rotates is 15m/min, and the level interval of two running rollers is 1mm;
(4) by the flat soft magnetic alloy powder Fe taken in right amount after step (2) screening
85si
9al
6, the powder after weighing slowly is joined in the propylene-ethylene copolymers be coated on running roller equably, rotates mixing formation paster by running roller, the linear velocity that running roller rotates is 10m/min, running roller temperature is 50 DEG C, and mixing time is 30min, and the level interval of two running rollers is 2mm;
(5) take appropriate stearic acid to add in the paster that step (4) makes, the stearic quality that adds accounts for propylene-ethylene copolymers, soft magnetic alloy powder Fe
85si
9al
6with 0.1% of stearic acid gross mass, in step (3), the quality that adds of propylene-ethylene copolymers accounts for propylene-ethylene copolymers, soft magnetic alloy powder Fe
85si
9al
6with 9.9% of stearic acid gross mass, soft magnetic alloy powder Fe in step (4)
85si
9al
6the quality that adds account for propylene-ethylene copolymers, soft magnetic alloy powder Fe
85si
9al
6with 90% of stearic acid gross mass; With blade, paster is cut off from running roller, put into running roller after playing triangle bag again and roll, 4 times repeatedly; Treat soft magnetic alloy powder Fe
85si
9al
6, after propylene-ethylene copolymers and stearic acid mix, open the water cooling plant of mill, running roller temperature is made to be down to 25 DEG C, the linear velocity of adjustment running roller is to 3m/min, according to required paster thickness adjustment running roller spacing 0.13mm, with blade, paster level on running roller is scratched, then along designated port direction, paster is taken off from running roller, the electromagnetism interference magnetic flexible patch that thickness is 0.13mm can be obtained.
The electromagnetism interference magnetic flexible patch of the 0.13mm obtained by the present embodiment, identify experiment for the induction of NFC recognition system electronic tag, experimental result shows: electronic tag can normal induction radiofrequency signal.
embodiment 2
The electromagnetism interference magnetic flexible patch of the present embodiment is made up of following component:
The flat soft magnetic alloy powder Fe that mass fraction 85% is prepared through ball milling
90si
7cr
3, wherein 90,7 and 3 percetages by weight representing Fe element, Si element and Cr element respectively; Fe
90si
7cr
3particle diameter be 30-75 μm, thickness is 0.5-1 μm, the propylene-ethylene copolymers (selecting the VM6102 of Exxon Mobil) of mass fraction 14.9%; The paraffin oil of mass fraction 0.1%, paraffin oil is for making lubricant.
The preparation method of the electromagnetism interference magnetic flexible patch of the present embodiment comprises the following steps:
(1) the flat soft magnetic alloy powder Fe prepared by ball milling
90si
7cr
3put into vacuum drying chamber, dry 2h at 100 DEG C of temperature, take out after cooling;
(2) use reciprocating sieve by the flat soft magnetic alloy powder Fe of step (1) gained
90si
7cr
3sieve, first filter out by 500 object screen clothes the powder that particle diameter is greater than 30 μm, then filter out by 200 object screen clothes the powder that particle diameter is less than 75 μm, obtain the powder that particle diameter is 30-75 μm;
(3) take appropriate propylene-ethylene copolymers to put into two roller mill and plastify, running roller temperature is 60 DEG C, and fusion time is 10min, makes the coated running roller equably of the propylene-ethylene copolymers after plasticizing, the linear velocity that running roller rotates is 16m/min, and the level interval of two running rollers is 3mm;
(4) by the flat soft magnetic alloy powder Fe taken in right amount after step (2) screening
90si
7cr
3, the powder after weighing slowly is joined in the propylene-ethylene copolymers be coated on running roller equably, rotates mixing formation paster by running roller, the linear velocity that running roller rotates is 9m/min, running roller temperature is 60 DEG C, and mixing time is 20min, and the level interval of two running rollers is 3mm;
(5) take appropriate paraffin oil to add in the paster that step (4) makes, the quality that adds of paraffin oil accounts for propylene-ethylene copolymers, soft magnetic alloy powder Fe
90si
7cr
3with 0.1% of paraffin oil gross mass, in step (3), the quality that adds of propylene-ethylene copolymers accounts for propylene-ethylene copolymers, soft magnetic alloy powder Fe
90si
7cr
3with 14.9% of paraffin oil gross mass, soft magnetic alloy powder Fe in step (4)
90si
7cr
3add quality and account for propylene-ethylene copolymers, soft magnetic alloy powder Fe
90si
7cr
3with 85% of paraffin oil gross mass; With blade, paster is cut off from running roller, put into running roller after playing triangle bag again and roll, 5 times repeatedly; Treat soft magnetic alloy powder Fe
90si
7cr
3, after propylene-ethylene copolymers and paraffin oil mix, open the water cooling plant of mill, running roller temperature is made to be down to 30 DEG C, the linear velocity of adjustment running roller is to 4m/min, according to required paster thickness adjustment running roller spacing 0.3mm, with blade, paster level on running roller is scratched, then along designated port direction, paster is taken off from running roller, the electromagnetism interference magnetic flexible patch that thickness is 0.3mm can be obtained.
The electromagnetism interference magnetic flexible patch of the 0.3mm obtained by the present embodiment, identify experiment for the induction of NFC recognition system electronic tag, experimental result shows: electronic tag can normal induction radiofrequency signal.
embodiment 3
The electromagnetism interference magnetic flexible patch of the present embodiment is made up of following component:
The flat soft magnetic alloy powder Fe that mass fraction 85% is prepared through ball milling
87si
10cr
1ni
2, wherein 87,10,1 and 2 percetages by weight representing Fe element, Si element, Cr element and Ni element respectively; Fe
87si
10cr
1ni
2particle diameter be 75-150 μm, thickness is 1-1.5 μm; The propylene-ethylene copolymers (selecting the VM6102 of Exxon Mobil) of mass fraction 14.8%; The zinc stearate of mass fraction 0.2%, zinc stearate makes lubricant.
The preparation method of the electromagnetism interference magnetic flexible patch of the present embodiment comprises the following steps:
(1) the flat soft magnetic alloy powder Fe prepared by ball milling
87si
10cr
1ni
2put into vacuum drying chamber, dry 1h at 200 DEG C of temperature, take out after cooling;
(2) use reciprocating sieve by the flat soft magnetic alloy powder Fe of step (1) gained
87si
10cr
1ni
2sieve, first filter out by 200 object screen clothes the powder that particle diameter is greater than 75 μm, then filter out by 100 object screen clothes the powder that particle diameter is less than 150 μm, obtain the powder that particle diameter is 75-150 μm;
(3) take appropriate propylene-ethylene copolymers to put into two roller mill and plastify, running roller temperature is 55 DEG C, and fusion time is 5min, makes the coated running roller equably of the propylene-ethylene copolymers after plasticizing, the linear velocity that running roller rotates is 15m/min, and the level interval of two running rollers is 0mm;
(4) by the flat soft magnetic alloy powder Fe taken in right amount after step (2) screening
90si
7cr
3, the powder after weighing slowly is joined in the propylene-ethylene copolymers be coated on running roller equably, rotates mixing formation paster by running roller, the linear velocity that running roller rotates is 10m/min, running roller temperature is 55 DEG C, and mixing time is 15min, and the level interval of two running rollers is 1mm;
(5) take appropriate zinc stearate to add in the paster that step (4) makes, the quality that adds of zinc stearate accounts for propylene-ethylene copolymers, soft magnetic alloy powder Fe
87si
10cr
1ni
2with 0.2% of zinc stearate gross mass, in step (3), the quality that adds of propylene-ethylene copolymers accounts for propylene-ethylene copolymers, soft magnetic alloy powder Fe
87si
10cr
1ni
2with 14.8% of zinc stearate gross mass, soft magnetic alloy powder Fe in step (4)
87si
10cr
1ni
2the quality that adds account for propylene-ethylene copolymers, soft magnetic alloy powder Fe
87si
10cr
1ni
2with 85% of zinc stearate gross mass; With blade, paster is cut off from running roller, put into running roller after playing triangle bag again and roll, 6 times repeatedly; Treat soft magnetic alloy powder Fe
87si
10cr
1ni
2, after propylene-ethylene copolymers and zinc stearate mix, open the water cooling plant of mill, running roller temperature is made to be down to 20 DEG C, the linear velocity of adjustment running roller is to 3m/min, according to required paster thickness adjustment running roller spacing 0.25mm, with blade, paster level on running roller is scratched, then along designated port direction, paster is taken off from running roller, the electromagnetism interference magnetic flexible patch that thickness is 0.25mm can be obtained.
The electromagnetism interference magnetic flexible patch of the 0.25mm obtained by the present embodiment, identify experiment for the induction of NFC recognition system electronic tag, experimental result shows: electronic tag can normal induction radiofrequency signal.
With reference to Fig. 2, electromagnetism interference magnetic flexible patch 3 utilizes its high magnetic permeability, the convergence effect to flux can be realized, improve the receiving sensitivity of system antenna 2 and read write line, increase the reading/writing distance of electronic tag, between metallic plate 1 and electronic tag, directly embed electromagnetism interference magnetic flexible patch 3, effectively can block radiofrequency signal and enter metallic plate 1 generation interference, inhibit signal intensity, increases distance of reaction, and then realizes the integrated of electronic tag and metallic plate 1.
Electromagnetism interference magnetic flexible patch prepared by the present invention adopts halogen-free environmental formula, the preparation method's technique provided is simple, be easy to realize industrialization produce, paster pliability is good simultaneously, under the prerequisite ensureing electronic tag proper communication, the thinnest 0.13mm that reaches of its thickness, uses lightly easy, has wide application market.
Those skilled in the art can carry out various modifications and variations to the embodiment of the present invention, if these amendments and modification are within the scope of the claims in the present invention and equivalent technologies thereof, then these revise and modification also within protection scope of the present invention.
The prior art that the content do not described in detail in specification is known to the skilled person.
Claims (10)
1. an electromagnetism interference magnetic flexible patch, is characterized in that, is made up of following component: the flat soft magnetic alloy powder Fe that mass fraction 85%-90% is prepared through ball milling
xsi
ym
z, M is selected from one or more in Al, Cr or Ni, and wherein x, y and z represent the percetage by weight of Fe element, Si element and M element respectively, 80≤x≤90,5≤y≤10,2≤z≤10; The polyolefin elastomer of mass fraction 9.9%-14.9%; The lubricant of mass fraction 0.1%-0.2%; Flat soft magnetic alloy powder Fe
xsi
ym
z, polyolefin elastomer and lubricant mass fraction sum be 100%.
2. electromagnetism interference magnetic flexible patch as claimed in claim 1, is characterized in that: described flat soft magnetic alloy powder Fe
xsi
ym
zparticle diameter be 30-150 μm, thickness is 0.5-1.5 μm.
3. electromagnetism interference magnetic flexible patch as claimed in claim 2, is characterized in that: described flat soft magnetic alloy powder Fe
xsi
ym
zparticle diameter be 50-120 μm, thickness is 0.6-1.2 μm.
4. electromagnetism interference magnetic flexible patch as claimed in claim 3, is characterized in that: described flat soft magnetic alloy powder Fe
xsi
ym
zparticle diameter be 80-100 μm, thickness is 0.8-1.0 μm.
5. the electromagnetism interference magnetic flexible patch as described in one of claim 1-4, is characterized in that: described polyolefin elastomer is propylene-ethylene copolymers.
6. the electromagnetism interference magnetic flexible patch as described in one of claim 1-4, is characterized in that: described lubricant is paraffin oil, stearic acid or stearate.
7. electromagnetism interference magnetic flexible patch as claimed in claim 6, is characterized in that: described stearate is zinc stearate.
8. a preparation method for the electromagnetism interference magnetic flexible patch as described in one of claim 1-7, is characterized in that, comprise the following steps:
(1) the flat soft magnetic alloy powder Fe prepared by ball milling
xsi
ym
zput into vacuum drying chamber, dry 1-2h at 100 DEG C of-200 DEG C of temperature, take out after cooling;
(2) use reciprocating sieve by the flat soft magnetic alloy powder Fe of step (1) gained
xsi
ym
zsieve, filter out the powder that particle diameter is 30-150 μm;
(3) take appropriate polyolefin elastomer to put into two roller mill and plastify, running roller temperature is 50-60 DEG C, fusion time is 5-10min, make the coated running roller equably of the polyolefin elastomer after plasticizing, the linear velocity that running roller rotates is 15-17m/min, and the level interval of two running rollers is 0-3mm;
(4) by the flat soft magnetic alloy powder Fe taken in right amount after step (2) screening
xsi
ym
zpowder after weighing slowly is joined in the polyolefin elastomer be coated on running roller equably, mixing formation paster is rotated by running roller, the linear velocity that running roller rotates is 9-11m/min, running roller temperature is 50-60 DEG C, mixing time is 15min-30min, and the level interval of two running rollers is 1-3mm;
(5) take appropriate lubricant to add in the paster that step (4) makes, the quality that adds of lubricant accounts for polyolefin elastomer, soft magnetic alloy powder Fe
xsi
ym
zwith the 0.1%-0.2% of lubricant gross mass, in step (3), the quality that adds of polyolefin elastomer accounts for polyolefin elastomer, soft magnetic alloy powder Fe
xsi
ym
zwith the 9.9%-14.9% of lubricant gross mass, soft magnetic alloy powder Fe in step (4)
xsi
ym
zthe quality that adds account for polyolefin elastomer, soft magnetic alloy powder Fe
xsi
ym
zwith the 85%-90% of lubricant gross mass; By the soft magnetic alloy powder Fe in paster
xsi
ym
z, polyolefin elastomer and mix lubricant even, running roller temperature is down to 20-30 DEG C, adjustment running roller linear velocity is to 3-5m/min, according to required paster thickness adjustment running roller spacing, with blade, paster level on running roller is scratched, then along designated port direction, paster is taken off from running roller, the electromagnetism interference magnetic flexible patch of desired thickness can be obtained.
9. the preparation method of electromagnetism interference magnetic flexible patch as claimed in claim 8, it is characterized in that: in step (2), filtering out particle diameter is that the concrete grammar of the powder of 30-150 μm is as follows: first filter out by 500 object screen clothes the powder that particle diameter is greater than 30 μm, filter out by 100 object screen clothes the powder that particle diameter is less than 150 μm again, namely obtain the powder that particle diameter is 30-150 μm; Or first filter out by 100 object screen clothes the powder that particle diameter is less than 150 μm, then filter out by 500 object screen clothes the powder that particle diameter is greater than 30 μm, namely obtain the powder that particle diameter is 30-150 μm.
10. the preparation method of electromagnetism interference magnetic flexible patch as claimed in claim 8 or 9, is characterized in that: in step (6), by the soft magnetic alloy powder Fe in paster
xsi
ym
z, polyolefin elastomer and the uniform concrete grammar of mix lubricant as follows: with blade, paster is cut off from running roller, puts into running roller after playing triangle bag again and roll, repeatedly at least twice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510853276.9A CN105469922B (en) | 2015-11-30 | 2015-11-30 | Electromagnetism interference magnetic flexible patch and preparation method thereof |
Applications Claiming Priority (1)
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| CN109337189A (en) * | 2018-10-12 | 2019-02-15 | 江苏金羿先磁新材料科技有限公司 | A kind of flexible magnetic conduction film and preparation method thereof of low energy loss |
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| CN109337189A (en) * | 2018-10-12 | 2019-02-15 | 江苏金羿先磁新材料科技有限公司 | A kind of flexible magnetic conduction film and preparation method thereof of low energy loss |
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| CN105469922B (en) | 2017-12-05 |
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