CN103745798A - Rare earth flexible magnetic stripe for health bedding and preparation method thereof - Google Patents
Rare earth flexible magnetic stripe for health bedding and preparation method thereof Download PDFInfo
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- CN103745798A CN103745798A CN201410010766.8A CN201410010766A CN103745798A CN 103745798 A CN103745798 A CN 103745798A CN 201410010766 A CN201410010766 A CN 201410010766A CN 103745798 A CN103745798 A CN 103745798A
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- 230000005291 magnetic effect Effects 0.000 title claims abstract description 149
- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 80
- 150000002910 rare earth metals Chemical class 0.000 title claims abstract description 53
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 230000036541 health Effects 0.000 title abstract description 5
- 239000006247 magnetic powder Substances 0.000 claims abstract description 32
- 239000007822 coupling agent Substances 0.000 claims abstract description 23
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 18
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 18
- 239000012760 heat stabilizer Substances 0.000 claims abstract description 18
- 239000011230 binding agent Substances 0.000 claims abstract description 15
- 238000005469 granulation Methods 0.000 claims abstract description 15
- 230000003179 granulation Effects 0.000 claims abstract description 15
- 229910001172 neodymium magnet Inorganic materials 0.000 claims abstract description 12
- 238000012545 processing Methods 0.000 claims abstract description 11
- 239000002131 composite material Substances 0.000 claims abstract description 8
- 238000003490 calendering Methods 0.000 claims description 46
- -1 rare earth compound Chemical class 0.000 claims description 27
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 18
- 239000000203 mixture Substances 0.000 claims description 17
- 239000006249 magnetic particle Substances 0.000 claims description 15
- 230000001681 protective effect Effects 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 10
- 229910052734 helium Inorganic materials 0.000 claims description 9
- 239000001307 helium Substances 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
- 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
- 238000002156 mixing Methods 0.000 claims description 3
- 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
- 238000005096 rolling process Methods 0.000 abstract description 3
- 238000007598 dipping method Methods 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
- 238000009489 vacuum treatment Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- 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
- 238000007654 immersion Methods 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- 230000008569 process Effects 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
- 238000001035 drying Methods 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
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000012360 testing method Methods 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
- 238000005265 energy consumption Methods 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
- 230000036316 preload Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
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Abstract
The invention relates to the field of magnetic materials, in particular to a rare earth flexible magnetic stripe for health bedding and a preparation method thereof. The rare earth flexible magnetic stripe for health bedding comprises the following components in parts by weight of 75-88 rare earth composite permanent magnet powder, 4-15 binder, 1-5 heat stabilizer, 0.5-2 coupling agent and 0.2-0.8 antioxidant, wherein the rare earth composite permanent magnetic powder comprises two or three of anisotropic NdFeB, NdFeN or SmFeN. The rare earth composite permanent magnetic powder is obtained through the microwave vacuum treatment with rust-preventative oil in the steps of dipping the rare earth composite permanent magnetic powder into 50-150 parts by weight of rust-preventative oil, vacuumizing to the vacuum degree of -0.02MPa to -0.001MPa, and performing microwave processing at the microwave frequency of 100MHz to 350MHz for 0.5 to 2 minutes. The preparation method comprises the treatment with rust-preventative oil, pre-magnetizing and microwave granulation, a first rolling, magnetic field orientation and a second rolling. The magnetic stripe prepared through the rare earth flexible magnetic stripe for health bedding and the preparation method thereof is good in magnetic performance and aging resistance and has improved corrosion resistance.
Description
Technical field
The present invention relates to a kind of field of magnetic material, relate in particular 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, be made through calendering technology.Also can mix by two kinds of magnetics.Conventionally we are referred to as rubber magnet, glue magnetic, mould magnetic.
Magnetic medical bedclothing adopts rare-earth flexible magnetic stripe with magnet, 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 meet the needs of 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, having introduced the rubber-like binding agent first modification crossed and neodymium iron boron class magnetic 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 preparing the flexible bonded magnet of magnetic property excellence.
Summary of the invention
The health-care bedding rare-earth flexible magnetic stripe that the first technical purpose of the present invention is to provide and a kind ofly has excellent magnetic characteristics, ageing resistance and resistance to corrosion improve.
The preparation method of the health-care bedding rare-earth flexible magnetic stripe that the second technical purpose of the present invention is to provide and a kind ofly has excellent magnetic characteristics, ageing resistance and resistance to corrosion improve.
The 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;
Through antirust oil microwave vacuum, processing forms described rare earth compound permanent magnetic powder, specifically described rare earth compound permanent magnetic powder is immersed in 50-150 weight portion antirust oil, then being evacuated to vacuum degree is-0.02MPa～-0.001MPa, carry out again Microwave Treatment, microwave frequency is 100MHz～350MHz, and microwave treatment time is 0.5～2min.
Advantage of the present invention is:
1. thereby particle content reduces costs;
2. through the content proportioning of specific components, especially rare earth compound permanent magnetic powder is processed in earlier stage through specific, had excellent magnetic characteristics, flexible increasing simultaneously, the ageing resistance raising of magnetic stripe, the resistance to corrosion of magnetic stripe increases; The magnetic kneading degree of magnetic stripe is good, is not easy magnetic, and smooth surface is bright and clean.This may be mainly because flexibility, corrosion resistance and surface flatness that its concrete microwave vacuum processing method is brought improve.
As preferably, described compound permanent magnetic powder is anisotropic NdFeB and the NdFeN mixing according to mass ratio 1:1.
As preferably, Kynoar, haloflex and ethylene-propylene rubber mixture that described binding agent is 1:1:1.
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.
Adopt described binding agent, coupling agent, antioxidant and heat stabilizer combination to participate in the rare-earth flexible magnetic stripe function admirable of making.
The second technical purpose of the present invention is achieved by the following technical programs:
A preparation method for rare-earth flexible magnetic stripe for health-care bedding, it comprises step successively:
(1) antirust oil processing: by weight 75-88 part rare earth compound permanent magnetic powder is immersed in 50-150 part antirust oil, then being evacuated to vacuum degree is-0.02MPa～-0.001MPa, carry out Microwave Treatment, microwave frequency is 100MHz～350MHz again, 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: will mix 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 through antirust oil rare earth compound permanent magnetic powder after treatment, then in pulsed magnetic field, carry out premagnetization, then carry out micro-wave vacuum, form the magnetic-particle group of reuniting;
(3) calendering for the first time: it is the rare-earth flexible magnet that the calender of 55-68 ℃ is rolled into sheet that described magnetic-particle group is put into temperature, in the time of calendering to being filled with nitrogen or helium in calender as protective atmosphere;
(4) magnetic field orientating: heat and be incubated after the rare-earth flexible magnet after calendering is for the first time cut into magnetic stripe, then accompanying warm magnetic field orientating;
(5) secondary calendering: the magnetic stripe after magnetic field orientating is rolled for the second time at 30-40 ℃, in the time of calendering to being filled with nitrogen or helium in calender as protective atmosphere.
Advantage of the present invention is:
1. the content proportioning of process specific components, especially to the specific processing in early stage of rare earth compound permanent magnetic powder process, microwave granulation, magnetic field orientating and twice calendering, 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, is not easy magnetic, and smooth surface is bright and clean;
2. premagnetization of the present invention and microwave drying granulation are carried out in solution, make magnetic first form small magnetic organic granular, be combined with micro-wave vacuum granulation, improve magnetic turning in orientation field, thereby improve its magnetic property, and can also strengthen ageing resistance and the ageing resistance of magnetic stripe;
3. after granulation, roll for the first time, the calendering of magnetic field orientating and secondary, 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 increased the degree of orientation and its surface flatness of magnet.
4. thereby particle content reduces costs;
5. the rare-earth flexible magnetic stripe of preparation is flexible, and magnetic property is high, comprises that remanent magnetism, coercive force, surface induction intensity all improve, and is particularly suitable for magnetic medical bedclothing health care and uses.
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 to mix according to the Kynoar of mass ratio 1:1:1 composition, haloflex and ethylene-propylene rubber.
As preferably, (2) premagnetization of described step and microwave granulation specifically will mix with 7-10 part binder solution through antirust oil rare earth compound permanent magnetic powder after treatment, then in pulsed magnetic field, carry out premagnetization, then carry out micro-wave vacuum, specifically being evacuated to vacuum degree is-0.02MPa～-0.001MPa, then carries out Microwave Treatment, and 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 specifically cuts into the rare-earth flexible magnet after calendering for the first time and is heated to 80-110 ℃ and be incubated 10-15min after magnetic stripe, then accompanies warm magnetic field orientating, and alignment magnetic field is 2-3T.
Technological parameter of the present invention can improve the magnetic property of magnetic stripe, and has increased the degree of orientation and its surface flatness of magnet.
Described step (2) material is to mix in improved banbury, and dispersion and homo-effect are good, and the banburying time is short.
As preferably, described banbury comprises banburying chamber, described in it, in banburying chamber, is fixedly installed meshing rotor, and described two ends of rotor is provided with left-hand thread and end contact formula automatic sealing device; Described banburying chamber is outside equipped with the temp measuring system communicating with described banburying chamber inside; On described rotor, be evenly arranged at intervals with long lug, nib, middle lug, nib and short lug, nib, described rotor is connected with the tumbler rotating 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 starts from position, described rotor intermediate cross-section to the symmetrical continuity of both sides end face direction; Described middle lug, nib length starts to be extended to the left end face from position, described rotor intermediate cross-section; Described short lug, nib length starts to be extended to the right end face from position, described rotor intermediate cross-section.
Advantage of the present invention is:
1. the setting from different lug, nib structures by described rotor, 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; Work energy consumption is low, is convenient to installation and maintenance;
3. by described temp measuring system, can realize the precise temperature control to banburying chamber.
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 and is provided with the support of bearing of installing hole and is arranged on the wearing plate in described support of bearing hole, on the described support of bearing, sealed cylinder is installed, and described sealed cylinder one end is provided with moving 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, on described quiet wear ring, be provided with backstay, be fixed by socket spring on described backstay and the spring base of fixing described spring.
Arranging of described structure can provide enough preload pressures to quiet wear ring and moving wear ring.
As preferably, between described quiet wear ring and described backstay, be provided with hold-down ring.
Hold-down ring can further improve the sealing effectiveness of sealing device.
In sum, the present invention has following beneficial effect:
1, have excellent magnetic characteristics;
2, ageing resistance and resistance to corrosion improve;
3, cost;
4, be applicable to preparing health-care bedding.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the improved banbury of the present invention;
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, improved banbury comprises banburying chamber 1, is fixedly installed meshing rotor 2 in banburying chamber 1, and rotor 2 two ends are provided with left-hand thread and end contact formula automatic sealing device 3; Banburying chamber 1 is outside equipped with the temp measuring system 4 communicating with banburying chamber 1 inside; On rotor 2, be evenly arranged at intervals with long lug, nib 21, middle lug, nib 22 and short lug, nib 23, rotor 2 is connected with the tumbler 5 rotating 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 start from rotor 2 positions, intermediate cross-section to the symmetrical continuity of both sides end face direction; Middle lug, nib 22 length start to be extended to the left end face from rotor 2 positions, intermediate cross-section; Short lug, nib 23 length start to be extended to the right end face from rotor 2 positions, intermediate cross-section.Short lug, nib 23 helical angles are 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 and is provided with the support of bearing 31 of installing hole and is arranged on the wearing plate 32 in the support of bearing 31 holes, and sealed cylinder 36 is installed on the support of bearing 31, and sealed cylinder 36 one end are provided with moving wear ring 33 and quiet wear ring 34.Between sealed cylinder 36 and the support of bearing 31, be provided with swivel becket 35.On quiet wear ring 34, be provided with backstay 37, be fixed by socket spring 38 on backstay 37 and the spring base 39 of fixing spring 38.Between quiet wear ring 34 and backstay 37, be provided with hold-down ring 310.
Embodiment mono-
(1) antirust oil processing: by weight 75 parts of anisotropic NdFeB that mix according to mass ratio 1:1 and NdFeN rare earth compound permanent magnetic powder are immersed in the F20-1 antirust oil of 50 parts of Suzhou Run Tian specialty oil companies productions, then being evacuated to vacuum degree is-0.02MPa, carry out again Microwave Treatment, microwave frequency is 100MHz, and microwave treatment time is 0.5min;
(2) premagnetization and microwave granulation: by process antirust oil rare earth compound permanent magnetic powder after treatment and 4 parts of Kynoar that form 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, carry out premagnetization, then carry out micro-wave vacuum, specifically being evacuated to vacuum degree is-0.02MPa, carry out again Microwave Treatment, 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) calendering for the first time: it is the rare-earth flexible magnet that the calender of 55 ℃ is rolled into sheet that described magnetic-particle group is put into temperature, is filled with helium as protective atmosphere in the time of calendering in calender;
(4) magnetic field orientating: heat and be incubated after the rare-earth flexible magnet after calendering is for the first time cut into magnetic stripe, then accompanying warm magnetic field orientating; Specifically the rare-earth flexible magnet after calendering is for the first time cut into and be heated to 80 ℃ and be incubated 10min after magnetic stripe, then carry out magnetic field orientating, alignment magnetic field is 2T;
(5) secondary calendering: the magnetic stripe after magnetic field orientating is rolled for the second time at 30 ℃, be filled with helium as protective atmosphere in the time of calendering in calender, finally make 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 in addition the magnetic stripe of preparation, according to magnetic stripe surface condition, observe its resistance to corrosion, the results are shown in Table 2.As can be seen from the table, unchanged in immersion 1h, soak 3h interior unchanged, after immersion 7h, just start to occur rust staining, after immersion 15h, there is large area rust staining.And existing magnetic stripe just there will be large area rust staining after generally soaking 3h.
Embodiment bis-
(1) antirust oil processing: by weight 88 parts of anisotropic NdFeB that mix according to mass ratio 1:1 and SmFeN rare earth compound permanent magnetic powder are immersed in the F20-1 antirust oil of 150 parts of Suzhou Run Tian specialty oil companies productions, then being evacuated to vacuum degree is-0.001MPa, carry out again Microwave Treatment, microwave frequency is 350MHz, and microwave treatment time is 2min;
(2) premagnetization and microwave granulation: will be through antirust oil rare earth compound permanent magnetic powder after treatment 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, carry out premagnetization, then carry out micro-wave vacuum, specifically being evacuated to vacuum degree is-0.001MPa, then carries out Microwave Treatment, and 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) calendering for the first time: it is the rare-earth flexible magnet that the calender of 68 ℃ is rolled into sheet that described magnetic-particle group is put into temperature, is filled with nitrogen as protective atmosphere in the time of calendering in calender;
(4) magnetic field orientating: heat and be incubated after the rare-earth flexible magnet after calendering is for the first time cut into magnetic stripe, then accompanying warm magnetic field orientating; Specifically the rare-earth flexible magnet after calendering is for the first time cut into and be heated to 110 ℃ and be incubated 15min after magnetic stripe, then carry out magnetic field orientating, alignment magnetic field is 3T;
(5) secondary calendering: the magnetic stripe after magnetic field orientating is rolled for the second time at 40 ℃, be filled with nitrogen as protective atmosphere in the time of calendering in calender, finally make health-care bedding rare-earth flexible magnetic stripe.
Embodiment tri-
(1) antirust oil processing: by weight 80 parts of anisotropic NdFeB, NdFeN and SmFeN rare earth compound permanent magnetic powders that mix according to mass ratio 1:1 are immersed in 100 parts of long-term antirust oil of KG-1 type quick-drying, then being evacuated to vacuum degree is-0.01MPa, carry out again Microwave Treatment, microwave frequency is 200MHz, and microwave treatment time is 1min;
(2) premagnetization and microwave granulation: will be through antirust oil rare earth compound permanent magnetic powder after treatment 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, carry out premagnetization, then carry out micro-wave vacuum, specifically being evacuated to vacuum degree is-0.008MPa, then carries out Microwave Treatment, and 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) calendering for the first time: it is the rare-earth flexible magnet that the calender of 59 ℃ is rolled into sheet that described magnetic-particle group is put into temperature, is filled with helium as protective atmosphere in the time of calendering in calender;
(4) magnetic field orientating: heat and be incubated after the rare-earth flexible magnet after calendering is for the first time cut into magnetic stripe, then accompanying warm magnetic field orientating; Specifically the rare-earth flexible magnet after calendering is for the first time cut into and be heated to 90 ℃ and be incubated 12min after magnetic stripe, then carry out magnetic field orientating, alignment magnetic field is 2.5T;
(5) secondary calendering: the magnetic stripe after magnetic field orientating is rolled for the second time at 35 ℃, be filled with nitrogen as protective atmosphere in the time of calendering in calender, finally make health-care bedding rare-earth flexible magnetic stripe.
Embodiment tetra-
(1) antirust oil processing: by weight 82 parts of anisotropic SmFeN that mix according to mass ratio 1:1 and NdFeN rare earth compound permanent magnetic powder are immersed in the F20-1 antirust oil of 90 parts of Suzhou Run Tian specialty oil companies productions, then being evacuated to vacuum degree is-0.015MPa, carry out again Microwave Treatment, microwave frequency is 150MHz, and microwave treatment time is 1.5min;
(2) premagnetization and microwave granulation: will be through antirust oil rare earth compound permanent magnetic powder after treatment 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, carry out premagnetization, then carry out micro-wave vacuum, specifically being evacuated to vacuum degree is-0.009MPa, then carries out Microwave Treatment, and 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) calendering for the first time: it is the rare-earth flexible magnet that the calender of 55-68 ℃ is rolled into sheet that described magnetic-particle group is put into temperature, is filled with nitrogen as protective atmosphere in the time of calendering in calender;
(4) magnetic field orientating: heat and be incubated after the rare-earth flexible magnet after calendering is for the first time cut into magnetic stripe, then accompanying warm magnetic field orientating; Specifically the rare-earth flexible magnet after calendering is for the first time cut into and be heated to 90 ℃ and be incubated 13min after magnetic stripe, then carry out magnetic field orientating, alignment magnetic field is 2.7T;
(5) secondary calendering: the magnetic stripe after magnetic field orientating is rolled for the second time at 38 ℃, be filled with helium as protective atmosphere in the time of calendering in calender, finally make health-care bedding rare-earth flexible magnetic stripe.
Comparative example one
(1) premagnetization granulation: the binding agent that Kynoar, haloflex and the ethylene-propylene rubber that 75 parts of anisotropic NdFeB that mix according to mass ratio 1:1 and NdFeN rare earth compound permanent magnetic powder and 4-15 part are formed according to mass ratio 1:1:1 is 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, be then dried; Described coupling agent is silane coupler; Described antioxidant is phosphite ester; Described heat stabilizer is polyvinyl chloride;
(2) calendering for the first time: it is the rare-earth flexible magnet that the calender of 55 ℃ is rolled into sheet that described magnetic-particle group is put into temperature, in the time of calendering to being filled with nitrogen or helium in calender as protective atmosphere;
(3) magnetic field orientating: heat and be incubated after the rare-earth flexible magnet after calendering is for the first time cut into magnetic stripe, then accompanying warm magnetic field orientating; Specifically the rare-earth flexible magnet after calendering is for the first time cut into and be heated to 80 ℃ and be incubated 10min after magnetic stripe, then carry out magnetic field orientating, alignment magnetic field is 1T.
Table 1 magnetic stripe magnetism testing
The test of table 2 magnetic stripe resistance to corrosion
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 larger, 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.
The magnetic stripe of explanation after antirust oil processing 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 are reading after this specification and can to the present embodiment, make the modification that there is no creative contribution as required, but as long as within the scope of claim of the present invention, are all subject to the protection of Patent Law.
Claims (10)
1. a health-care bedding rare-earth flexible magnetic stripe, is characterized in that: 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;
Through antirust oil microwave vacuum, processing forms described rare earth compound permanent magnetic powder, specifically described rare earth compound permanent magnetic powder is immersed in 50-150 weight portion antirust oil, then being evacuated to vacuum degree is-0.02MPa～-0.001MPa, carry out again Microwave Treatment, microwave frequency is 100MHz～350MHz, and microwave treatment time is 0.5～2min.
2. 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 the NdFeN mixing according to mass ratio 1:1.
3. a kind of health-care bedding rare-earth flexible magnetic stripe according to claim 2, is characterized in that: Kynoar, haloflex and ethylene-propylene rubber mixture that described binding agent is 1:1:1.
4. 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. a preparation method for rare-earth flexible magnetic stripe for health-care bedding, is characterized in that: it comprises step successively:
(1) antirust oil processing: by weight 75-88 part rare earth compound permanent magnetic powder is immersed in 50-150 part antirust oil, then being evacuated to vacuum degree is-0.02MPa～-0.001MPa, carry out Microwave Treatment, microwave frequency is 100MHz～350MHz again, 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: will mix 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 through antirust oil rare earth compound permanent magnetic powder after treatment, then in pulsed magnetic field, carry out premagnetization, then carry out micro-wave vacuum, form the magnetic-particle group of reuniting;
(3) calendering for the first time: it is the rare-earth flexible magnet that the calender of 55-68 ℃ is rolled into sheet that described magnetic-particle group is put into temperature, in the time of calendering to being filled with nitrogen or helium in calender as protective atmosphere;
(4) magnetic field orientating: heat and be incubated after the rare-earth flexible magnet after calendering is for the first time cut into magnetic stripe, then accompanying warm magnetic field orientating;
(5) secondary calendering: the magnetic stripe after magnetic field orientating is rolled for the second time at 30-40 ℃, in the time of calendering to being filled with nitrogen or helium in calender as protective atmosphere.
6. the preparation method of rare-earth flexible magnetic stripe for a kind of health-care bedding according to claim 5, it is characterized in that: (2) premagnetization of described step and microwave granulation specifically will mix with 7-10 part binder solution through antirust oil rare earth compound permanent magnetic powder after treatment, then in pulsed magnetic field, carry out premagnetization, then carry out micro-wave vacuum, specifically being evacuated to vacuum degree is-0.02MPa～-0.001MPa, carry out again Microwave Treatment, microwave frequency is 100MHz～350MHz, microwave treatment time is 0.5～2min, form the magnetic-particle group of reuniting.
7. the preparation method of rare-earth flexible magnetic stripe for a kind of health-care bedding according to claim 6, it is characterized in that: described step (4) magnetic field orientating specifically cuts into the rare-earth flexible magnet after calendering for the first time and is heated to 80-110 ℃ and be incubated 10-15min after magnetic stripe, then accompany warm magnetic field orientating, alignment magnetic field is 2-3T.
8. the preparation method of rare-earth flexible magnetic stripe for a kind of health-care bedding according to claim 7, is characterized in that: described step (1) antirust oil is the F20-1 antirust oil that Suzhou Run Tian specialty oil company produces.
9. the preparation method of rare-earth flexible magnetic stripe for a kind of health-care bedding according to claim 5, it is characterized in that: described banbury comprises banburying chamber, described in it, in banburying chamber, be fixedly installed meshing rotor, described two ends of rotor is provided with left-hand thread and end contact formula automatic sealing device; Described banburying chamber is outside equipped with the temp measuring system communicating with described banburying chamber inside; On described rotor, be evenly arranged at intervals with long lug, nib, middle lug, nib and short lug, nib, described rotor is connected with the tumbler rotating 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 starts from position, described rotor intermediate cross-section to the symmetrical continuity of both sides end face direction; Described middle lug, nib length starts to be extended to the left end face from position, described rotor intermediate cross-section; Described short lug, nib length starts to be extended to the right end face from position, described rotor intermediate cross-section.
10. the preparation method of rare-earth flexible magnetic stripe for a kind of health-care bedding according to claim 9, it is characterized in that: described automatic sealing device comprises and is provided with the support of bearing of installing hole and is arranged on the wearing plate in described support of bearing hole, on the described support of bearing, sealed cylinder is installed, described sealed cylinder one end is provided with moving wear ring and quiet wear ring.
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