CN103745798B - A kind of health-care bedding rare-earth flexible magnetic stripe and preparation method thereof - Google Patents
A kind of health-care bedding rare-earth flexible magnetic stripe and preparation method thereof Download PDFInfo
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- CN103745798B CN103745798B CN201410010766.8A CN201410010766A CN103745798B CN 103745798 B CN103745798 B CN 103745798B CN 201410010766 A CN201410010766 A CN 201410010766A CN 103745798 B CN103745798 B CN 103745798B
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- 230000005291 magnetic effect Effects 0.000 title claims abstract description 146
- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 73
- 150000002910 rare earth metals Chemical class 0.000 title claims abstract description 46
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 238000003490 calendering Methods 0.000 claims abstract description 45
- 239000006247 magnetic powder Substances 0.000 claims abstract description 29
- -1 rare earth compound Chemical class 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 23
- 239000007822 coupling agent Substances 0.000 claims abstract description 22
- 230000008569 process Effects 0.000 claims abstract description 20
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 17
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 17
- 239000012760 heat stabilizer Substances 0.000 claims abstract description 17
- 239000011230 binding agent Substances 0.000 claims abstract description 14
- 238000005469 granulation Methods 0.000 claims abstract description 14
- 230000003179 granulation Effects 0.000 claims abstract description 14
- 229910001172 neodymium magnet Inorganic materials 0.000 claims abstract description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 18
- 239000006249 magnetic particle Substances 0.000 claims description 15
- 230000001681 protective effect Effects 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 10
- 239000001307 helium Substances 0.000 claims description 9
- 229910052734 helium Inorganic materials 0.000 claims description 9
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 9
- 229910052757 nitrogen Inorganic materials 0.000 claims description 9
- 229920000181 Ethylene propylene rubber Polymers 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 7
- 150000008301 phosphite esters Chemical group 0.000 claims description 7
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical group [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 6
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 6
- 239000004800 polyvinyl chloride Substances 0.000 claims description 6
- 229910000077 silane Inorganic materials 0.000 claims description 6
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 5
- 239000005864 Sulphur Substances 0.000 claims description 5
- 150000004645 aluminates Chemical class 0.000 claims description 5
- UQZIWOQVLUASCR-UHFFFAOYSA-N alumane;titanium Chemical compound [AlH3].[Ti] UQZIWOQVLUASCR-UHFFFAOYSA-N 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 abstract description 11
- 230000007797 corrosion Effects 0.000 abstract description 11
- 230000032683 aging Effects 0.000 abstract description 9
- 239000000696 magnetic material Substances 0.000 abstract description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- 238000002791 soaking Methods 0.000 description 3
- 238000010186 staining Methods 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- 239000006057 Non-nutritive feed additive Substances 0.000 description 1
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical class [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000010074 rubber mixing Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
The present invention relates to a kind of field of magnetic material, particularly relate to a kind of health-care bedding rare-earth flexible magnetic stripe and preparation method thereof.It comprises the component of following parts by weight: 75-88 part rare earth compound permanent magnetic powder, 4-15 part binding agent, 1-5 part heat stabilizer, 0.5-2 part coupling agent, 0.2-0.8 part antioxidant; Described rare earth compound permanent magnetic powder comprises two or three in anisotropic NdFeB, NdFeN or SmFeN; Described rare earth compound permanent magnetic powder forms through the process of antirust oil microwave vacuum, specifically described rare earth compound permanent magnetic powder is immersed in 50-150 weight portion antirust oil, then vacuum degree is evacuated to for-0.02MPa ~-0.001MPa, carry out Microwave Treatment again, microwave frequency is 100MHz ~ 350MHz, and microwave treatment time is 0.5 ~ 2min.Preparation method comprises antirust oil process, premagnetization and microwave granulation, first calendering, magnetic field orientating and secondary calendering.Magnetic stripe prepared by the present invention has excellent magnetic characteristics, ageing resistance and resistance to corrosion improve.
Description
Technical field
The present invention relates to a kind of field of magnetic material, particularly relate to a kind of health-care bedding rare-earth flexible magnetic stripe and preparation method thereof.
Background technology
Magnetic stripe essence is permanent-magnet materials, mainly contains two kinds: bond flexible ferrite permanent-magnet materials and bonding flexible rare-earth permanent magnetic material, is made through calendering technology.Also can mix by two kinds of magnetics.Usually we are referred to as rubber magnet, glue magnetic, mould magnetic.
Magnetic medical bedclothing magnet adopts rare-earth flexible magnetic stripe, and glue magnetic is the earliest flexible ferrite, can be made into magnetic sheet, magnetic stripe, but surface induction intensity is low, is difficult to the needs meeting health-care bedding.
CN1624824A (2005-6-8) discloses in the patent of a kind of flexible adhesion Nd-Fe-B magnets and manufacture method thereof, describe the rubber-like binding agent and neodymium iron boron class magnetic first modification crossed and processing aid mixes in proportion, then adopt rolling process or flat-plate compressed method for making to make certain thickness flexible bonded magnet the sizing material after mixing, but the method is unfavorable for the flexible bonded magnet preparing magnetic property excellence.
Summary of the invention
First technical purpose of the present invention be to provide a kind ofly to have excellent magnetic characteristics, health-care bedding rare-earth flexible magnetic stripe that ageing resistance and resistance to corrosion improve.
Second technical purpose of the present invention be to provide a kind ofly to have excellent magnetic characteristics, the preparation method of health-care bedding rare-earth flexible magnetic stripe that ageing resistance and resistance to corrosion improve.
First technical purpose of the present invention is achieved by the following technical programs:
A kind of health-care bedding rare-earth flexible magnetic stripe, it comprises the component of following parts by weight: 75-88 part rare earth compound permanent magnetic powder, 4-15 part binding agent, 1-5 part heat stabilizer, 0.5-2 part coupling agent, 0.2-0.8 part antioxidant; Described rare earth compound permanent magnetic powder comprises two or three in anisotropic NdFeB, NdFeN or SmFeN;
Described rare earth compound permanent magnetic powder forms through the process of antirust oil microwave vacuum, specifically described rare earth compound permanent magnetic powder is immersed in 50-150 weight portion antirust oil, then vacuum degree is evacuated to for-0.02MPa ~-0.001MPa, carry out Microwave Treatment again, microwave frequency is 100MHz ~ 350MHz, and microwave treatment time is 0.5 ~ 2min.
Advantage of the present invention is:
1. particle content reduces thus reduces costs;
2., through the content proportioning of specific components, especially pass through specific process in early stage to rare earth compound permanent magnetic powder, have excellent magnetic characteristics, flexibility increases simultaneously, and the ageing resistance of magnetic stripe improves, and the resistance to corrosion of magnetic stripe increases; The magnetic kneading degree of magnetic stripe is good, and be not easy magnetic, smooth surface is bright and clean.This flexibility, corrosion resistance and surface flatness that may mainly bring due to its concrete microwave vacuum processing method improves.
As preferably, described compound permanent magnetic powder is anisotropic NdFeB and NdFeN mixed according to mass ratio 1:1.
As preferably, described binding agent is the Kynoar of 1:1:1, haloflex and ethylene-propylene rubber mixture.
As preferably, described coupling agent is silane coupler, aluminate coupling agent or aluminium titanium composite coupler; Described antioxidant is phosphite ester; Described heat stabilizer is polyvinyl chloride or non-sulphur organotin.
The combination of described binding agent, coupling agent, antioxidant and heat stabilizer is adopted to participate in the rare-earth flexible magnetic stripe function admirable made.
Second technical purpose of the present invention is achieved by the following technical programs:
A preparation method for health-care bedding rare-earth flexible magnetic stripe, it comprises step successively:
(1) antirust oil process: by weight 75-88 part rare earth compound permanent magnetic powder is immersed in 50-150 part antirust oil, then vacuum degree is evacuated to for-0.02MPa ~-0.001MPa, carry out Microwave Treatment again, microwave frequency is 100MHz ~ 350MHz, and microwave treatment time is 0.5 ~ 2min; Described rare earth compound permanent magnetic powder comprises two or three in anisotropic NdFeB, NdFeN or SmFeN;
(2) premagnetization and microwave granulation: the rare earth compound permanent magnetic powder after antirust oil process is mixed in banbury with 4-15 part binding agent, 1-5 part heat stabilizer, 0.5-2 part coupling agent, 0.2-0.8 part antioxidant solution, then in pulsed magnetic field, premagnetization is carried out, then carry out micro-wave vacuum, form the magnetic-particle group of reuniting;
(3) roll for the first time: described magnetic-particle group being put into temperature is the rare-earth flexible magnet that the calender of 55-68 DEG C is rolled into sheet, in calender, be filled with nitrogen or helium while calendering as protective atmosphere;
(4) magnetic field orientating: carry out heating and being incubated after the rare-earth flexible magnet after calendering is for the first time cut into magnetic stripe, then carry out accompanying warm magnetic field orientating;
(5) secondary calendering: the magnetic stripe after magnetic field orientating is carried out at 30-40 DEG C second time and roll, be filled with nitrogen or helium while calendering as protective atmosphere in calender.
Advantage of the present invention is:
1. through the content proportioning of specific components, especially specific process in early stage, microwave granulation, magnetic field orientating and twice calendering are passed through to rare earth compound permanent magnetic powder, have excellent magnetic characteristics, simultaneously flexible increase, the ageing resistance of magnetic stripe improves, and the resistance to corrosion of magnetic stripe increases; The magnetic kneading degree of magnetic stripe is good, and be not easy magnetic, smooth surface is bright and clean;
2. premagnetization of the present invention and microwave drying granulation are carried out in the solution, magnetic is made first to form small magnetic organic granular, be combined with micro-wave vacuum granulation, improve magnetic turning in orientation field, thus improve its magnetic property, and ageing resistance and the ageing resistance of magnetic stripe can also be strengthened;
3. roll for the first time after the pelletizing, magnetic field orientating and secondary calendering, and control actual temp and operating time, calendering and magnetic field orientating are separately carried out, and roll respectively before magnetic field orientating He after magnetic field orientating, improve the magnetic property of magnetic stripe, and add the degree of orientation and its surface flatness of magnet.
4. particle content reduces thus reduces costs;
5. the rare-earth flexible magnetic stripe of preparation is flexible, and magnetic property is high, comprises remanent magnetism, coercive force, surface induction intensity all improves, be particularly suitable for magnetic medical bedclothing health care and use.
As preferably, described step (1) antirust oil is the F20-1 antirust oil that Suzhou Run Tian specialty oil company produces.
As preferably, described step (1) binding agent is Kynoar, haloflex or ethylene-propylene rubber.
More preferably, described binding agent is Kynoar, haloflex and the ethylene-propylene rubber mixing formed according to mass ratio 1:1:1.
As preferably, rare earth compound permanent magnetic powder after antirust oil process specifically mixes with 7-10 part binder solution by (2) premagnetization of described step and microwave granulation, then in pulsed magnetic field, premagnetization is carried out, then micro-wave vacuum is carried out, specifically be evacuated to vacuum degree for-0.02MPa ~-0.001MPa, then carry out Microwave Treatment, microwave frequency is 100MHz ~ 350MHz, microwave treatment time is 0.5 ~ 2min, forms the magnetic-particle group of reuniting.
As preferably, described step (4) magnetic field orientating is heated to 80-110 DEG C after specifically the rare-earth flexible magnet after calendering for the first time being cut into magnetic stripe and is incubated 10-15min, and then carry out accompanying warm magnetic field orientating, alignment magnetic field is 2-3T.
Technological parameter of the present invention can improve the magnetic property of magnetic stripe, and adds the degree of orientation and its surface flatness of magnet.
Described step (2) material be improve banbury in mix, dispersion and homo-effect good, the banburying time is short.
As preferably, described banbury comprises banburying chamber, and described in it, banburying chamber's internal fixtion is provided with meshing rotor, and described two ends of rotor is provided with left-hand thread and end surface contact type automatic sealing device; Described banburying chamber is outside equipped with the temp measuring system that communicate inner with described banburying chamber; On described rotor, uniform intervals is provided with long lug, nib, middle lug, nib and short lug, nib, and described rotor is connected with the tumbler rotated by driven by motor; Described long lug, nib is consistent with the hand of spiral of described middle lug, nib; The hand of spiral of described middle lug, nib and short lug, nib is contrary; Described long lug, nib length continues to end face direction, both sides symmetry from position, described rotor intermediate cross-section; Described middle lug, nib length is extended to end face to the left from position, described rotor intermediate cross-section; Described short lug, nib length is extended to end face to the right from position, described rotor intermediate cross-section.
Advantage of the present invention is:
1., by the setting of described rotor from different lug, nib structure, work is not easy to produce dead band phenomenon;
2., by the locations of structures relation of described automatic sealing device, rotor and banburying chamber, make banbury overcome easy leakage, be difficult to the shortcoming of cleaning; Operating power consumption is low, is convenient to installation and maintenance;
3. can realize the precise temperature control to banburying chamber by described temp measuring system.
As preferably, described banburying chamber is rectangle or cylindrical shape.
As preferably, described short lug, nib helical angle is greater than the helical angle of described long lug, nib and described middle lug, nib.
As preferably, described automatic sealing device comprises the support of bearing being provided with installing hole and the wearing plate be arranged in described support of bearing hole, and the described support of bearing is provided with sealed cylinder, and described sealed cylinder one end is provided with dynamic wear ring and quiet wear ring.
As preferably, between described sealed cylinder and the described support of bearing, be provided with swivel becket.
As preferably, described quiet wear ring is provided with backstay, is fixed by socket the spring base of spring on described backstay and fixing described spring.
Arranging of described structure can provide enough preload pressures to quiet wear ring and dynamic wear ring.
As preferably, between described quiet wear ring and described backstay, be provided with hold-down ring.
Hold-down ring can improve the sealing effectiveness of sealing device further.
In sum, the present invention has following beneficial effect:
1, have excellent magnetic characteristics;
2, ageing resistance and resistance to corrosion improve;
3, cost reduces;
4, be applicable to preparing health-care bedding.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the banbury that the present invention improves;
Fig. 2 is rotor of the present invention, long lug, nib, middle lug, nib and short lug, nib schematic diagram;
Fig. 3 is automatic sealing device schematic diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
As shown in Figure 1 and Figure 2, the banbury of improvement comprises banburying chamber 1, and banburying chamber 1 internal fixtion is provided with meshing rotor 2, and rotor 2 two ends are provided with left-hand thread and end surface contact type automatic sealing device 3; Banburying chamber 1 is outside equipped with the temp measuring system 4 communicated with banburying chamber 1 inside; On rotor 2, uniform intervals is provided with long lug, nib 21, middle lug, nib 22 and short lug, nib 23, and rotor 2 is connected with the tumbler 5 rotated by driven by motor; Long lug, nib 21 is consistent with the hand of spiral of middle lug, nib 22; The hand of spiral of middle lug, nib 22 and short lug, nib 23 is contrary.Banburying chamber 1 is rectangle or cylindrical shape.Long lug, nib 21 length continues to end face direction, both sides symmetry from position, rotor 2 intermediate cross-section; Middle lug, nib 22 length is extended to end face to the left from position, rotor 2 intermediate cross-section; Short lug, nib 23 length is extended to end face to the right from position, rotor 2 intermediate cross-section.Short lug, nib 23 helical angle is greater than the helical angle of long lug, nib 21 and middle lug, nib 22.
As shown in Figure 3, automatic sealing device 3 comprises the support of bearing 31 being provided with installing hole and the wearing plate 32 be arranged in the support of bearing 31 hole, the support of bearing 31 is provided with sealed cylinder 36, and sealed cylinder 36 one end is provided with dynamic wear ring 33 and quiet wear ring 34.Swivel becket 35 is provided with between sealed cylinder 36 and the support of bearing 31.Quiet wear ring 34 is provided with backstay 37, is fixed by socket the spring base 39 of spring 38 on backstay 37 and fixing spring 38.Hold-down ring 310 is provided with between quiet wear ring 34 and backstay 37.
Embodiment one
(1) antirust oil process: by weight anisotropic NdFeB and the NdFeN rare earth compound permanent magnetic powder that 75 parts mix according to mass ratio 1:1 is immersed in the F20-1 antirust oil of 50 parts of Suzhou Run Tian specialty oil companies productions, then vacuum degree is evacuated to for-0.02MPa, carry out Microwave Treatment again, microwave frequency is 100MHz, and microwave treatment time is 0.5min;
(2) premagnetization and microwave granulation: by the rare earth compound permanent magnetic powder after antirust oil process and 4 parts of Kynoar formed according to mass ratio 1:1:1, the binding agent that haloflex and ethylene-propylene rubber are mixed to form, 1 part of heat stabilizer, 0.5 part of coupling agent, 0.2 part of antioxidant solution mixes in banbury, then in pulsed magnetic field, premagnetization is carried out, then micro-wave vacuum is carried out, specifically be evacuated to vacuum degree for-0.02MPa, carry out Microwave Treatment again, microwave frequency is 100MHz, microwave treatment time is 0.5min, form the magnetic-particle group of reuniting, described coupling agent is silane coupler, described antioxidant is phosphite ester, described heat stabilizer is polyvinyl chloride,
(3) roll for the first time: described magnetic-particle group being put into temperature is the rare-earth flexible magnet that the calender of 55 DEG C is rolled into sheet, is filled with helium as protective atmosphere while calendering in calender;
(4) magnetic field orientating: carry out heating and being incubated after the rare-earth flexible magnet after calendering is for the first time cut into magnetic stripe, then carry out accompanying warm magnetic field orientating; Be heated to 80 DEG C after specifically the rare-earth flexible magnet after calendering for the first time being cut into magnetic stripe and be incubated 10min, then carry out magnetic field orientating, alignment magnetic field is 2T;
(5) secondary calendering: the magnetic stripe after magnetic field orientating is carried out at 30 DEG C second time calendering, be filled with helium as protective atmosphere while calendering in calender, final obtained health-care bedding rare-earth flexible magnetic stripe.
Detect magnetic stripe performance, the results are shown in Table 1.
In 5% sodium chloride solution, soak the magnetic stripe of preparation in addition, observe its resistance to corrosion according to magnetic stripe surface condition, the results are shown in Table 2.As can be seen from the table, soak in 1h unchanged, soak in 3h unchanged, just start to occur rust staining after soaking 7h, after soaking 15h, occur large area rust staining.And existing magnetic stripe just there will be large area rust staining after generally soaking 3h.
Embodiment two
(1) antirust oil process: by weight anisotropic NdFeB and the SmFeN rare earth compound permanent magnetic powder that 88 parts mix according to mass ratio 1:1 is immersed in the F20-1 antirust oil of 150 parts of Suzhou Run Tian specialty oil companies productions, then vacuum degree is evacuated to for-0.001MPa, carry out Microwave Treatment again, microwave frequency is 350MHz, and microwave treatment time is 2min;
(2) premagnetization and microwave granulation: by the rare earth compound permanent magnetic powder after antirust oil process and 15 parts of ethylene-propylene rubber, 5 parts of heat stabilizers, 2 parts of coupling agents, 0.8 part of antioxidant solution mix in banbury, then in pulsed magnetic field, premagnetization is carried out, then micro-wave vacuum is carried out, specifically be evacuated to vacuum degree for-0.001MPa, then carry out Microwave Treatment, microwave frequency is 350MHz, microwave treatment time is 2min, forms the magnetic-particle group of reuniting; Described coupling agent is aluminate coupling agent; Described antioxidant is phosphite ester; Described heat stabilizer is non-sulphur organotin;
(3) roll for the first time: described magnetic-particle group being put into temperature is the rare-earth flexible magnet that the calender of 68 DEG C is rolled into sheet, is filled with nitrogen as protective atmosphere while calendering in calender;
(4) magnetic field orientating: carry out heating and being incubated after the rare-earth flexible magnet after calendering is for the first time cut into magnetic stripe, then carry out accompanying warm magnetic field orientating; Be heated to 110 DEG C after specifically the rare-earth flexible magnet after calendering for the first time being cut into magnetic stripe and be incubated 15min, then carry out magnetic field orientating, alignment magnetic field is 3T;
(5) secondary calendering: the magnetic stripe after magnetic field orientating is carried out at 40 DEG C second time calendering, be filled with nitrogen as protective atmosphere while calendering in calender, final obtained health-care bedding rare-earth flexible magnetic stripe.
Embodiment three
(1) antirust oil process: by weight anisotropic NdFeB, NdFeN and SmFeN rare earth compound permanent magnetic powder that 80 parts mix according to mass ratio 1:1 is immersed in 100 parts of KG-1 type quick-drying long-term rust prevention oil, then vacuum degree is evacuated to for-0.01MPa, carry out Microwave Treatment again, microwave frequency is 200MHz, and microwave treatment time is 1min;
(2) premagnetization and microwave granulation: by the rare earth compound permanent magnetic powder after antirust oil process and 10 parts of haloflexes, 4 parts of heat stabilizers, 1 part of coupling agent, 0.5 part of antioxidant solution mix in banbury, then in pulsed magnetic field, premagnetization is carried out, then micro-wave vacuum is carried out, specifically be evacuated to vacuum degree for-0.008MPa, then carry out Microwave Treatment, microwave frequency is 250MHz, microwave treatment time is 1min, forms the magnetic-particle group of reuniting; Described coupling agent is silane coupler, aluminate coupling agent or aluminium titanium composite coupler; Described antioxidant is phosphite ester; Described heat stabilizer is polyvinyl chloride or non-sulphur organotin;
(3) roll for the first time: described magnetic-particle group being put into temperature is the rare-earth flexible magnet that the calender of 59 DEG C is rolled into sheet, is filled with helium as protective atmosphere while calendering in calender;
(4) magnetic field orientating: carry out heating and being incubated after the rare-earth flexible magnet after calendering is for the first time cut into magnetic stripe, then carry out accompanying warm magnetic field orientating; Be heated to 90 DEG C after specifically the rare-earth flexible magnet after calendering for the first time being cut into magnetic stripe and be incubated 12min, then carry out magnetic field orientating, alignment magnetic field is 2.5T;
(5) secondary calendering: the magnetic stripe after magnetic field orientating is carried out at 35 DEG C second time calendering, be filled with nitrogen as protective atmosphere while calendering in calender, final obtained health-care bedding rare-earth flexible magnetic stripe.
Embodiment four
(1) antirust oil process: by weight anisotropic SmFeN and the NdFeN rare earth compound permanent magnetic powder that 82 parts mix according to mass ratio 1:1 is immersed in the F20-1 antirust oil of 90 parts of Suzhou Run Tian specialty oil companies productions, then vacuum degree is evacuated to for-0.015MPa, carry out Microwave Treatment again, microwave frequency is 150MHz, and microwave treatment time is 1.5min;
(2) premagnetization and microwave granulation: by the rare earth compound permanent magnetic powder after antirust oil process and 10 parts of Kynoar, 3 parts of heat stabilizers, 1.5 parts of coupling agents, 0.4 part of antioxidant solution mix in banbury, then in pulsed magnetic field, premagnetization is carried out, then micro-wave vacuum is carried out, specifically be evacuated to vacuum degree for-0.009MPa, then carry out Microwave Treatment, microwave frequency is 190MHz, microwave treatment time is 1.4min, forms the magnetic-particle group of reuniting; Described coupling agent is silane coupler, aluminate coupling agent or aluminium titanium composite coupler; Described antioxidant is phosphite ester; Described heat stabilizer is polyvinyl chloride or non-sulphur organotin;
(3) roll for the first time: described magnetic-particle group being put into temperature is the rare-earth flexible magnet that the calender of 55-68 DEG C is rolled into sheet, is filled with nitrogen as protective atmosphere while calendering in calender;
(4) magnetic field orientating: carry out heating and being incubated after the rare-earth flexible magnet after calendering is for the first time cut into magnetic stripe, then carry out accompanying warm magnetic field orientating; Be heated to 90 DEG C after specifically the rare-earth flexible magnet after calendering for the first time being cut into magnetic stripe and be incubated 13min, then carry out magnetic field orientating, alignment magnetic field is 2.7T;
(5) secondary calendering: the magnetic stripe after magnetic field orientating is carried out at 38 DEG C second time calendering, be filled with helium as protective atmosphere while calendering in calender, final obtained health-care bedding rare-earth flexible magnetic stripe.
Comparative example one
(1) premagnetization granulation: the binding agent that Kynoar, haloflex and ethylene-propylene rubber that 75 parts of anisotropic NdFeB and NdFeN rare earth compound permanent magnetic powders according to mass ratio 1:1 mixing and 4-15 part form according to mass ratio 1:1:1 are mixed to form, 1 part of heat stabilizer, 0.5 part of coupling agent, 0.2 part of antioxidant solution mix in banbury, then in pulsed magnetic field, carry out premagnetization, then carry out drying; Described coupling agent is silane coupler; Described antioxidant is phosphite ester; Described heat stabilizer is polyvinyl chloride;
(2) roll for the first time: described magnetic-particle group being put into temperature is the rare-earth flexible magnet that the calender of 55 DEG C is rolled into sheet, in calender, be filled with nitrogen or helium while calendering as protective atmosphere;
(3) magnetic field orientating: carry out heating and being incubated after the rare-earth flexible magnet after calendering is for the first time cut into magnetic stripe, then carry out accompanying warm magnetic field orientating; Be heated to 80 DEG C after specifically the rare-earth flexible magnet after calendering for the first time being cut into magnetic stripe and be incubated 10min, then carry out magnetic field orientating, alignment magnetic field is 1T.
Table 1 magnetic stripe magnetism testing
Table 2 magnetic stripe resistance to corrosion is tested
As can be seen from Table 1, residual magnetic induction intensity of the present invention, HCJ, maximum magnetic energy product and degree of anisotropy are comparatively large, and magnetic property is good; Irreversible loss hirr of the present invention is less, and magnetic stability is high.
As can be seen from Table 2, resistance to corrosion of the present invention is better than comparative example one.
Illustrate that the magnetic stripe after antirust oil process of the present invention, premagnetization and microwave granulation, first calendering, magnetic field orientating and secondary calendering has excellent magnetic characteristics, ageing resistance and resistance to corrosion improve.
This specific embodiment is only explanation of the invention; it is not limitation of the present invention; those skilled in the art can make to the present embodiment the amendment not having creative contribution as required after reading this specification, as long as but be all subject to the protection of Patent Law in right of the present invention.
Claims (9)
1. a health-care bedding preparation method for rare-earth flexible magnetic stripe, is characterized in that: it comprises step successively:
(1) antirust oil process: by weight 75-88 part rare earth compound permanent magnetic powder is immersed in 50-150 part antirust oil, then vacuum degree is evacuated to for-0.02MPa ~-0.001MPa, carry out Microwave Treatment again, microwave frequency is 100MHz ~ 350MHz, and microwave treatment time is 0.5 ~ 2min; Described rare earth compound permanent magnetic powder comprises two or three in anisotropic NdFeB, NdFeN or SmFeN;
(2) premagnetization and microwave granulation: the rare earth compound permanent magnetic powder after antirust oil process is mixed in banbury with 4-15 part binding agent, 1-5 part heat stabilizer, 0.5-2 part coupling agent, 0.2-0.8 part antioxidant solution, then in pulsed magnetic field, premagnetization is carried out, then carry out micro-wave vacuum, form the magnetic-particle group of reuniting;
(3) roll for the first time: described magnetic-particle group being put into temperature is the rare-earth flexible magnet that the calender of 55-68 DEG C is rolled into sheet, in calender, be filled with nitrogen or helium while calendering as protective atmosphere;
(4) magnetic field orientating: carry out heating and being incubated after the rare-earth flexible magnet after calendering is for the first time cut into magnetic stripe, then carry out accompanying warm magnetic field orientating;
(5) secondary calendering: the magnetic stripe after magnetic field orientating is carried out at 30-40 DEG C second time and roll, be filled with nitrogen or helium while calendering as protective atmosphere in calender.
2. the preparation method of a kind of health-care bedding rare-earth flexible magnetic stripe according to claim 1, is characterized in that: described compound permanent magnetic powder is anisotropic NdFeB and NdFeN mixed according to mass ratio 1:1.
3. the preparation method of a kind of health-care bedding rare-earth flexible magnetic stripe according to claim 2, is characterized in that: the Kynoar of described binding agent to be mass ratio be 1:1:1, haloflex and ethylene-propylene rubber mixture.
4. the preparation method of a kind of health-care bedding rare-earth flexible magnetic stripe according to claim 3, is characterized in that: described coupling agent is silane coupler, aluminate coupling agent or aluminium titanium composite coupler; Described antioxidant is phosphite ester; Described heat stabilizer is polyvinyl chloride or non-sulphur organotin.
5. the preparation method of a kind of health-care bedding rare-earth flexible magnetic stripe according to claim 4, it is characterized in that: the rare earth compound permanent magnetic powder after antirust oil process specifically mixes with 7-10 part binder solution by (2) premagnetization of described step and microwave granulation, then in pulsed magnetic field, premagnetization is carried out, then micro-wave vacuum is carried out, specifically be evacuated to vacuum degree for-0.02MPa ~-0.001MPa, carry out Microwave Treatment again, microwave frequency is 100MHz ~ 350MHz, microwave treatment time is 0.5 ~ 2min, forms the magnetic-particle group of reuniting.
6. the preparation method of a kind of health-care bedding rare-earth flexible magnetic stripe according to claim 5, it is characterized in that: described step (4) magnetic field orientating is heated to 80-110 DEG C after specifically the rare-earth flexible magnet after calendering for the first time being cut into magnetic stripe and is incubated 10-15min, then carry out accompanying warm magnetic field orientating, alignment magnetic field is 2-3T.
7. the preparation method of a kind of health-care bedding rare-earth flexible magnetic stripe according to claim 6, is characterized in that: described step (1) antirust oil is the F20-1 antirust oil that Suzhou Run Tian specialty oil company produces.
8. the preparation method of a kind of health-care bedding rare-earth flexible magnetic stripe according to claim 7, it is characterized in that: described banbury comprises banburying chamber, described in it, banburying chamber's internal fixtion is provided with meshing rotor, and described two ends of rotor is provided with left-hand thread and end surface contact type automatic sealing device; Described banburying chamber is outside equipped with the temp measuring system that communicate inner with described banburying chamber; On described rotor, uniform intervals is provided with long lug, nib, middle lug, nib and short lug, nib, and described rotor is connected with the tumbler rotated by driven by motor; Described long lug, nib is consistent with the hand of spiral of described middle lug, nib; The hand of spiral of described middle lug, nib and short lug, nib is contrary; Described long lug, nib length continues to end face direction, both sides symmetry from position, described rotor intermediate cross-section; Described middle lug, nib length is extended to end face to the left from position, described rotor intermediate cross-section; Described short lug, nib length is extended to end face to the right from position, described rotor intermediate cross-section.
9. the preparation method of a kind of health-care bedding rare-earth flexible magnetic stripe according to claim 8, it is characterized in that: described automatic sealing device comprises the support of bearing being provided with installing hole and the wearing plate be arranged in described support of bearing hole, the described support of bearing is provided with sealed cylinder, and described sealed cylinder one end is provided with dynamic wear ring and quiet wear ring.
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| EP3633830A4 (en) * | 2017-05-23 | 2021-03-17 | Three Bond Co., Ltd. | Laminated steel sheet production method, laminated steel sheet, motor, and adhesive composition for laminated steel sheets |
| CN107620055B (en) * | 2017-08-17 | 2020-06-23 | 上海无线电设备研究所 | Submillimeter wave absorbing material with spiral structure and preparation method thereof |
| CN108083793A (en) * | 2017-12-20 | 2018-05-29 | 宁波市鄞州智伴信息科技有限公司 | The formula and compounding method of a kind of ferrite permanent-magnet materials |
| CN109192487A (en) * | 2018-08-29 | 2019-01-11 | 江苏健睡宝健康科技有限公司 | A kind of manufacturing method of high-strength magnetic magnetic stripe |
| CN115472370B (en) | 2022-09-20 | 2023-06-13 | 北京大学 | Flexible permanent magnet material, preparation method and application thereof in magnetic biological effect product |
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Address after: 313300 Bamboo Industry Science and Technology Venture Center, Xiaofeng Town, Anji County, Huzhou City, Zhejiang Province, 6, 7, 8, 9 and 10 Patentee after: Heye Health Technology Co.,Ltd. Address before: 313300 Anji Zhejiang Economic Development Zone, Zhejiang health and Health Industry Park, and Health Technology Co., Ltd. Patentee before: Zhejiang Heye Health Technology Co.,Ltd. |
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Denomination of invention: A rare earth flexible magnetic strip for health bedding and its preparation method Effective date of registration: 20231018 Granted publication date: 20160120 Pledgee: Zhejiang Anji Rural Commercial Bank of the West Branch of Limited by Share Ltd. Pledgor: Heye Health Technology Co.,Ltd. Registration number: Y2023330002353 |