CN118098740A - Preparation method of neodymium-iron-boron magnetic rubber - Google Patents
Preparation method of neodymium-iron-boron magnetic rubber Download PDFInfo
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- CN118098740A CN118098740A CN202410288626.0A CN202410288626A CN118098740A CN 118098740 A CN118098740 A CN 118098740A CN 202410288626 A CN202410288626 A CN 202410288626A CN 118098740 A CN118098740 A CN 118098740A
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- iron
- neodymium
- boron
- rubber
- magnetic
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- 229910001172 neodymium magnet Inorganic materials 0.000 title claims abstract description 64
- 229920001971 elastomer Polymers 0.000 title claims abstract description 38
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 239000000843 powder Substances 0.000 claims abstract description 22
- 239000001257 hydrogen Substances 0.000 claims abstract description 17
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 17
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 15
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 15
- 239000000314 lubricant Substances 0.000 claims abstract description 15
- 229920006000 epoxidized styrene-butadiene-styrene block copolymer Polymers 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 12
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 8
- 238000005266 casting Methods 0.000 claims description 12
- 239000002245 particle Substances 0.000 claims description 11
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 8
- 238000003723 Smelting Methods 0.000 claims description 8
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 claims description 6
- 238000000227 grinding Methods 0.000 claims description 6
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical compound [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 235000021355 Stearic acid Nutrition 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 238000006356 dehydrogenation reaction Methods 0.000 claims description 5
- 238000004880 explosion Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 5
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000008117 stearic acid Substances 0.000 claims description 5
- 239000011701 zinc Substances 0.000 claims description 5
- 239000011787 zinc oxide Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 claims description 3
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 3
- BGNXCDMCOKJUMV-UHFFFAOYSA-N Tert-Butylhydroquinone Chemical compound CC(C)(C)C1=CC(O)=CC=C1O BGNXCDMCOKJUMV-UHFFFAOYSA-N 0.000 claims description 3
- CEGOLXSVJUTHNZ-UHFFFAOYSA-K aluminium tristearate Chemical compound [Al+3].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CEGOLXSVJUTHNZ-UHFFFAOYSA-K 0.000 claims description 3
- 229940063655 aluminum stearate Drugs 0.000 claims description 3
- CZBZUDVBLSSABA-UHFFFAOYSA-N butylated hydroxyanisole Chemical compound COC1=CC=C(O)C(C(C)(C)C)=C1.COC1=CC=C(O)C=C1C(C)(C)C CZBZUDVBLSSABA-UHFFFAOYSA-N 0.000 claims description 3
- 235000010354 butylated hydroxytoluene Nutrition 0.000 claims description 3
- 238000007865 diluting Methods 0.000 claims description 3
- 239000003085 diluting agent Substances 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 235000019359 magnesium stearate Nutrition 0.000 claims description 3
- 230000005415 magnetization Effects 0.000 claims description 3
- 229910000077 silane Inorganic materials 0.000 claims description 3
- 239000004250 tert-Butylhydroquinone Substances 0.000 claims description 3
- 235000019281 tert-butylhydroquinone Nutrition 0.000 claims description 3
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 3
- 239000000654 additive Substances 0.000 claims description 2
- 230000000996 additive effect Effects 0.000 claims description 2
- 239000002480 mineral oil Substances 0.000 claims description 2
- 235000010446 mineral oil Nutrition 0.000 claims description 2
- 239000006247 magnetic powder Substances 0.000 abstract description 21
- 238000007254 oxidation reaction Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 8
- 230000003647 oxidation Effects 0.000 abstract description 7
- 239000013078 crystal Substances 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 5
- 229910052779 Neodymium Inorganic materials 0.000 abstract description 4
- 239000006185 dispersion Substances 0.000 abstract description 4
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052726 zirconium Inorganic materials 0.000 abstract description 4
- 239000006087 Silane Coupling Agent Substances 0.000 abstract description 3
- 239000007822 coupling agent Substances 0.000 abstract description 3
- 238000009826 distribution Methods 0.000 abstract description 3
- 239000012752 auxiliary agent Substances 0.000 abstract description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 abstract description 2
- 238000000748 compression moulding Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 12
- 230000004907 flux Effects 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 238000005245 sintering Methods 0.000 description 6
- 239000000696 magnetic material Substances 0.000 description 5
- 239000011159 matrix material Substances 0.000 description 4
- 238000007747 plating Methods 0.000 description 4
- 229910052761 rare earth metal Inorganic materials 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 150000002910 rare earth metals Chemical class 0.000 description 3
- 238000004073 vulcanization Methods 0.000 description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- 125000003277 amino group Chemical group 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001755 magnetron sputter deposition Methods 0.000 description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
- 229910052758 niobium Inorganic materials 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 1
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005347 demagnetization Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 235000019253 formic acid Nutrition 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000006249 magnetic particle Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000002715 modification method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- -1 rare earth compound Chemical class 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000010057 rubber processing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
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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
- H01F1/032—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 hard-magnetic materials
- H01F1/04—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 hard-magnetic materials metals or alloys
- H01F1/047—Alloys characterised by their composition
- H01F1/053—Alloys characterised by their composition containing rare earth metals
- H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
- H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
- H01F1/0571—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes
- H01F1/0573—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes obtained by reduction or by hydrogen decrepitation or embrittlement
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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
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/023—Hydrogen absorption
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/10—Ferrous alloys, e.g. steel alloys containing cobalt
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
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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
- H01F1/032—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 hard-magnetic materials
- H01F1/04—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 hard-magnetic materials metals or alloys
- H01F1/047—Alloys characterised by their composition
- H01F1/053—Alloys characterised by their composition containing rare earth metals
- H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
- H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
- H01F1/0571—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes
- H01F1/0572—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes with a protective layer
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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
- H01F1/032—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 hard-magnetic materials
- H01F1/04—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 hard-magnetic materials metals or alloys
- H01F1/047—Alloys characterised by their composition
- H01F1/053—Alloys characterised by their composition containing rare earth metals
- H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
- H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
- H01F1/0571—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes
- H01F1/0575—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together
- H01F1/0576—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together pressed, e.g. hot working
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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
- H01F1/032—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 hard-magnetic materials
- H01F1/04—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 hard-magnetic materials metals or alloys
- H01F1/047—Alloys characterised by their composition
- H01F1/053—Alloys characterised by their composition containing rare earth metals
- H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
- H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
- H01F1/0571—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes
- H01F1/0575—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together
- H01F1/0577—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together sintered
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- H—ELECTRICITY
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- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F13/00—Apparatus or processes for magnetising or demagnetising
- H01F13/003—Methods and devices for magnetising permanent magnets
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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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
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- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Hard Magnetic Materials (AREA)
Abstract
The invention relates to the technical field of neodymium-iron-boron magnets, and discloses a preparation method of neodymium-iron-boron magnetic rubber, wherein a proper amount of Zr, nb, dy and the like are added to adjust the composition of the neodymium-iron-boron magnet, so that crystal grains are homogenized and regularized; the addition of the antioxidant and the lubricant reduces the oxidation of neodymium and improves the service performance of the magnet at high temperature; the rapid hardening belt process is adopted to promote the dispersion distribution of the neodymium-rich phase and improve the orientation degree of the magnet; the hydrogen crushing process technology is adopted to pulverize the cast ingot to obtain micro powder, so that the degree of oxidization of the magnetic powder is reduced; the vertical orientation compression molding is adopted, so that the magnetic stability is improved; the silane coupling agent is utilized to modify the surface of the magnetic powder, one end of the coupling agent is bonded with hydroxyl groups on the surface of the magnetic powder, the other end of the coupling agent is mixed and crosslinked with the epoxidized SBS, the silicon rubber and other auxiliary agents, and the surfaces are mutually wound to form an interpenetrating network structure, so that the mechanical property of the rubber is improved, and meanwhile, the magnetic property of the rubber is also improved.
Description
The application relates to a split application of 'a preparation method and application of a high-performance NdFeB magnet' with application number 2023112915918 and application date 2023, 10 and 08.
Technical Field
The invention relates to the technical field of neodymium-iron-boron magnets, in particular to a preparation method of neodymium-iron-boron magnetic rubber.
Background
The neodymium-iron-boron magnet serving as a third-generation rare earth permanent magnet material has the advantages of high cost performance, small volume, light weight, good mechanical properties and strong magnetism, is suitable for manufacturing various products with high performance and complex shapes, becomes an indispensable key basic support material in many modern industrial technologies, brings wider market prospect for the neodymium-iron-boron industry along with the rapid development of information technology, but is not easy to be used for wide production due to complex preparation process of the neodymium-iron-boron material on the market at present.
The structure of the sintered NdFeB magnet is easy to oxidize, so that the surface of the magnet needs to be treated to improve the oxidation resistance, and the prior art mostly adopts magnetron sputtering plating, mixed plating and magnetron sputtering plating, but has the problems of complicated steps and high equipment structure requirement, and the combination ratio of the plating and the magnet is relatively poor; in addition, the particle size consistency of the magnetic powder has important influence on the quality of the magnetic powder and the performances of the sintered magnet in all aspects, and the mixing of large particles into the magnetic powder can seriously influence the quality of the magnetic powder and the performances of the sintered magnet in all aspects, so that the yield of neodymium iron boron powder is reduced, rare earth resources are wasted, and the production cost is increased. The invention overcomes the problem of easy oxidation and improves the comprehensive performance of the neodymium-iron-boron magnet by optimizing the composition of the magnet components and improving the pulverizing process and the molding technology.
The magnetic rubber is a novel polymer composite material, magnetic material particles are filled into rubber, and then the rubber is processed and molded by a traditional rubber processing method, and compared with the traditional magnetic material, the magnetic rubber has the advantages of low density, good corrosion resistance and the like, and is widely applied to the fields of motors, drivers, powerful magnets and the like; however, the compatibility between the NdFeB magnetic powder and the rubber organic matrix is poor, so that the rubber magnetic powder is easy to generate performance damage or instability and the like in the use process. According to the invention, the surface of the NdFeB magnet is modified, chemical bonds are formed at the interface through chemical reaction, and the chemical bonds are crosslinked with macromolecular chains of rubber, so that the mechanical property and magnetic property of rubber magnet are improved, and the application range of the rubber magnet is widened.
Disclosure of Invention
(One) solving the technical problems
Aiming at the defects of the prior art, the invention provides a preparation method of the neodymium-iron-boron magnetic rubber, which solves the problems that the neodymium-iron-boron magnet prepared by the prior art is easy to oxidize and has low coercive force, and simultaneously further improves the magnetic property and mechanical property of the rubber.
(II) technical scheme
A preparation method of neodymium-iron-boron magnetic rubber comprises the following components, by mass, 18-25% of Nd, 4.2-6.6% of Pr, 0.5-2.4% of Dy, 60-75% of Fe, 0.2-0.8% of Co, 0.8-2.2% of B, 0.06-0.11% of Nb, 0.1-0.5% of Zr, 0.4-1.5% of Al and 0.3-0.9% of Zn; the preparation method comprises the following steps:
(1) The raw materials prepared by the components are placed into a vacuum rapid hardening smelting furnace, the raw materials are vacuumized to 0.01-0.03Pa, smelted at 1400-1500 ℃, and then molten metal is poured onto a rotating water-cooled copper roller, and a rapid hardening casting sheet with a certain thickness is obtained at a certain roller rotating speed.
(2) Placing the rapid hardening casting sheet in the step (1) into a stainless steel hydrogen explosion tank, adding 0.02-0.11% of antioxidant and 0.03-0.08% of lubricant, absorbing hydrogen for 1-3h under the hydrogen pressure of 0.1-0.3MPa at 180-220 ℃, heating to 400-600 ℃ for dehydrogenation for 5-8h, and carrying out air flow grinding to obtain powder with the particle size of 3.5-4.5 mu m, thereby obtaining the high-performance neodymium-iron-boron magnet.
Further, the rotating speed of the roller in the step (1) is 1.2-3.5m/s, and the thickness of the casting sheet is 0.1-0.5mm.
Further, the antioxidant in the step (2) is any one of 2, 6-di-tert-butyl-p-cresol, tert-butylhydroquinone or butyl hydroxy anisole.
Further, the lubricant in the step (2) is any one of zinc stearate, aluminum stearate, magnesium stearate or mineral oil.
Use of the high-performance neodymium iron boron magnet obtained by the preparation method according to any one of claims 1 to 4 in rubber, wherein the preparation method comprises the following steps:
s1, dissolving (3-aminopropyl) triethoxysilane in ethanol, stirring and diluting, adding high-performance neodymium-iron-boron magnet powder into silane diluent, stirring and dispersing at 20-35 ℃, standing, and drying at 50-60 ℃ to obtain the modified high-performance neodymium-iron-boron magnet.
S2, adding the epoxidized SBS, the silicon rubber, the zinc oxide, the stearic acid, the modified high-performance neodymium-iron-boron magnet, the DM accelerator and the TT accelerator into an open mill, uniformly mixing, vulcanizing on a flat vulcanizing machine, wherein the vulcanizing temperature is 140-160 ℃, the vulcanizing pressure is 8-12MPa, the vulcanizing time is 20-40min, and then magnetizing under a magnetizing field to obtain the high-performance neodymium-iron-boron magnetic rubber.
Further, the mass of the (3-aminopropyl) triethoxysilane in the step S1 is 1.5-3.5% of that of the neodymium-iron-boron magnet powder.
Further, the weight of each additive is 15-25 parts of epoxidized SBS, 40-60 parts of silicon rubber, 3-6 parts of zinc oxide, 1-3 parts of stearic acid, 4-15 parts of high-performance neodymium-iron-boron magnet, 2-4 parts of DM accelerator and 0.2-0.8 part of TT accelerator.
Further, the magnetization field intensity is 1300-1400kA/m, and the magnetizing time is 25-45min.
(III) beneficial technical effects
The invention mainly prepares the high-performance neodymium-iron-boron magnet by the following method: (1) The components of the NdFeB magnet are regulated by adding a proper amount of alloy components such as Zr, nb and the like, so that crystal grains are homogenized and regularized, and the magnetic dispersion field in the material is reduced; the antioxidant and the lubricant are added, so that the oxidation of neodymium is reduced, the irreversible loss of magnetic flux is obviously reduced, and the service performance of the magnet at high temperature is obviously improved; (2) The rapid hardening belt process is adopted to promote the dispersion distribution of the neodymium-rich phase, refine crystal grains and is very beneficial to improving the orientation degree of the sintered neodymium-iron-boron magnet; (3) Improving the pulverizing process, adopting hydrogen crushing process technology, utilizing the hydrogen absorption and release characteristics of rare earth permanent magnet alloy to pulverize cast ingot to obtain micro powder, and reducing the oxidation degree of magnetic powder; (4) The sintering process of the magnetic powder is improved, and vertical orientation pressing forming is adopted, so that the stress difference of the magnetic powder in all directions is small, the magnetic orientation degree is improved, and the high-performance neodymium iron boron body is obtained; (5) The (3-aminopropyl) triethoxysilane is adopted to modify the surface of the magnetic powder, hydroxyl groups on the surface of the magnetic powder are bonded with silicon hydrogen bonds of the coupling agent, and amino groups at the other end are mixed and crosslinked with the epoxidized SBS, the silicon rubber and other auxiliary agents to obtain the high-performance neodymium iron boron magnetic rubber.
The addition of a proper amount of silane coupling agent can increase the oxidation resistance and the dimensional stability of the magnet, plays a role of a molecular bridge between neodymium iron boron magnetic powder and epoxidized SBS, forms a chemical bond at an interface by chemical reaction of two substances with poor compatibility, so that the macromolecular chain of the epoxidized SBS is crosslinked, and meanwhile, the epoxidized SBS and the silicon rubber have good compatibility and are mutually entangled to form an interpenetrating network structure; when the neodymium iron boron magnetic powder and the rubber are mixed, the rubber has good fluidity, can fully infiltrate the surface of the magnetic powder, shortens the mixing time of the rubber, prevents the phenomenon of early vulcanization of a rubber matrix, and improves the mechanical property of the material and the magnetic property of the material to a certain extent.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Preparation of epoxidized SBS: adding SBS with mass concentration of 1g and 10mL cyclohexane into a flask equipped with a reflux condenser and a dropping funnel, adding 0.5g formic acid and 0.3g hydrogen peroxide after SBS is completely dissolved, reacting for 3h at 70 ℃, settling with ethanol after the reaction is finished, and washing to obtain the epoxidized SBS.
Examples
(1) The raw materials prepared by 22% of Nd, 5.2% of Pr, 0.5% of Dy, 63% of Fe, 0.4% of Co, 2.1% of B, 0.06% of Nb, 0.1% of Zr, 0.8% of Al and 0.6% of Zn in percentage by mass are put into a vacuum rapid hardening smelting furnace, are vacuumized to 0.02Pa, are smelted at 1450 ℃, and then are poured onto a rotating water-cooled copper roller with the rotating speed of 2.5m/s, so as to obtain the rapid hardening casting sheet with the thickness of 0.3mm.
(2) Placing the rapid hardening casting sheet in the step (1) into a stainless steel hydrogen explosion tank, adding 0.03% of butyl hydroxy anisole and 0.05% of magnesium stearate, absorbing hydrogen for 3h at 210 ℃ under the pressure of 0.3MPa, heating to 550 ℃ for dehydrogenation for 7h, and carrying out air flow grinding to obtain powder with the particle size of 4.0 mu m, thereby obtaining the high-performance neodymium-iron-boron magnet.
Examples
The difference between this example and example 1 is that in step (1), the mass percentage of Nb is 0.07%, the mass percentage of Zr is 0.2%, and the other conditions are kept the same.
Examples
The difference between this example and example 1 is that in step (1), the mass percentage of Nb is 0.08%, the mass percentage of Zr is 0.3%, and the other conditions are kept the same.
Examples
The difference between this example and example 1 is that in step (1), the mass percentage of Nb is 0.09%, the mass percentage of Zr is 0.4%, and the other conditions are kept the same.
Examples
The difference between this example and example 1 is that in step (1), the mass percentage of Nb is 0.11%, the mass percentage of Zr is 0.5%, and the other conditions are kept the same.
Comparative example 1
This comparative example differs from example 1 in that Nb and Zr are not added in step (1), and other conditions remain the same.
Test sample preparation: the neodymium iron boron magnet powder is placed in a magnetic field with the magnetic field strength of 2.0T for vertical orientation, pressed and formed, placed in a vacuum sintering furnace, sintered for 4 hours at 1100 ℃, then tempered for the first time at 900 ℃, heat-preserved for 3 hours, tempered for the second time at 700 ℃ and heat-preserved for 6 hours, and the magnetic property of the material is tested by adopting a magnetic material measurement system.
| Coercivity (kA/m) | Maximum magnetic energy product (kJ/m 3) | |
| Example 1 | 312.3 | 851.6 |
| Example 2 | 325.1 | 880.1 |
| Example 3 | 370.2 | 1010.8 |
| Example 4 | 365.6 | 1048.5 |
| Example 5 | 356.9 | 1020.2 |
| Comparative example 1 | 280.1 | 721.3 |
The larger the magnetic energy product, the less magnetic material is needed to produce the same effect; the coercive force represents the capability of the magnetic material for resisting demagnetization, and the larger the numerical value is, the better the temperature resistance is; the method for optimizing the performance of the material by adding alloy elements is the most common material modification method, and test data in the table show that as the content of Zr element and Nb element is increased, the coercive force and the maximum magnetic energy product are improved to a certain extent, and the improvement range is obvious, because the addition of the Zr element and the Nb element reduces the sensitivity of the neodymium-iron-boron magnet to the sintering temperature, improves the sintering temperature resistance of the magnet, has smaller magnetic property difference of the magnet at the sintering temperature of 1100 ℃, does not generate abnormal growth of crystal grains, and overcomes the problem of poor performance stability of the magnet caused by uneven distribution of temperature fields in a sintering furnace by compounding and adding Zr and Nb, thereby playing the roles of refining crystal grains and improving wettability among the crystal grains, and finally preparing the magnet with high magnetic energy product and stable performance.
Examples
(1) The raw materials prepared by 24% of Nd, 6.4% of Pr, 1.3% of Dy, 65% of Fe, 0.5% of Co, 1.8% of B, 0.09% of Nb, 0.4% of Zr, 0.9% of Al and 0.6% of Zn in percentage by mass are placed into a vacuum rapid hardening smelting furnace, vacuum pumped to 0.03Pa, smelting is carried out at 1500 ℃, and then molten metal is poured onto a rotating water-cooled copper roller with the rotating speed of 3.2m/s, so that the 0.2 mm-thick rapid hardening casting sheet is obtained.
(2) Placing the rapid hardening casting sheet in the step (1) into a stainless steel hydrogen explosion tank, adding 0.02% of antioxidant 2, 6-di-tert-butyl-p-cresol and 0.03% of lubricant zinc stearate, absorbing hydrogen for 3 hours under the hydrogen pressure of 190 ℃ and 0.3MPa, heating to 500 ℃ for dehydrogenation for 6 hours, and carrying out air flow grinding to obtain powder with the particle size of 3.5 mu m, thereby obtaining the high-performance neodymium-iron-boron magnet.
Examples
This example differs from example 6 in that the antioxidant mass percentage in step (2) was 0.04%, the lubricant mass percentage was 0.04%, and the other conditions remained the same.
Examples
This example differs from example 6 in that the antioxidant mass percentage in step (2) was 0.06%, the lubricant mass percentage was 0.05%, and the other conditions remained the same.
Examples
This example differs from example 6 in that the antioxidant mass percentage in step (2) was 0.08%, the lubricant mass percentage was 0.06%, and the other conditions remained the same.
Examples
This example differs from example 6 in that the antioxidant mass percentage in step (2) was 0.11%, the lubricant mass percentage was 0.08%, and the other conditions remained the same.
Comparative example 2
This comparative example differs from example 6 in that no antioxidant or lubricant is added in step (2), and the other conditions remain the same.
| Residual magnetic flux density (T) | |
| Example 6 | 1.350 |
| Example 7 | 1.364 |
| Example 8 | 1.372 |
| Example 9 | 1.385 |
| Example 10 | 1.426 |
| Comparative example 2 | 1.208 |
The mobility of the neodymium-iron-boron permanent magnet powder particles is poor, in the grinding process, an Nd-rich phase in the neodymium-iron-boron magnet is easy to oxidize to form Nd 2O3, and the more the content of the Nd-rich phase is, the larger the residual magnetic flux density of the permanent magnet is reduced. As is apparent from the above table test data, as the content of the antioxidant and lubricant in the magnet increases, the residual magnetic flux density gradually increases, the comparative example 2 was free of the antioxidant and lubricant, and the residual magnetic flux density was 1.208T, whereas the residual magnetic flux density of example 10 was 1.426T, because the antioxidant added during the milling process can form a protective film on the surface of the powder particles, effectively preventing further oxidation of the powder, minimizing the content of Nd 2O3 in the magnet, and in addition, the addition of the lubricant allows the rotation resistance of the magnetic particles to decrease, the friction between the powder particles, the degree of powder orientation to increase, the magnet remanence to increase, and the final magnetic properties of the permanent magnet to increase.
Examples
(1) The raw materials prepared by 25% of Nd, 4.6% of Pr, 1.9% of Dy, 71% of Fe, 0.7% of Co, 1.5% of B, 0.09% of Nb, 0.4% of Zr, 1.5% of Al and 0.9% of Zn in percentage by mass are placed into a vacuum rapid hardening smelting furnace, vacuum pumping is carried out to 0.01Pa, smelting is carried out at 1400 ℃, and then molten metal liquid is poured onto a rotating water-cooled copper roller with the rotating speed of 2.6m/s, so that the 0.2mm thick rapid hardening casting sheet is obtained.
(2) Placing the rapid hardening casting sheet in the step (1) into a stainless steel hydrogen explosion tank, adding 0.09% of tertiary butyl hydroquinone and 0.08% of aluminum stearate, absorbing hydrogen for 3 hours at 200 ℃ and under the pressure of 0.3MPa, heating to 480 ℃ for dehydrogenation for 6 hours, and carrying out air flow grinding to obtain powder with the particle size of 4.5 mu m, thereby obtaining the high-performance neodymium-iron-boron magnet.
(3) Dissolving 0.25g of (3-aminopropyl) triethoxysilane in ethanol, stirring and diluting, adding 10g of high-performance neodymium-iron-boron magnet powder into silane diluent, stirring and dispersing at 30 ℃, standing, and drying at 50 ℃ to obtain the modified high-performance neodymium-iron-boron magnet.
(4) 20G of epoxidized SBS, 55g of silicon rubber, 5g of zinc oxide, 2g of stearic acid, 4g of modified high-performance neodymium-iron-boron magnet, 3g of DM accelerator and 0.5g of TT accelerator are added into an open mill, uniformly mixed, vulcanized on a flat vulcanizing machine, vulcanized at a temperature of 150 ℃ and a vulcanization pressure of 10MPa for 30min, and then magnetized for 35min under a magnetization field strength of 1350kA/m, so as to obtain the high-performance neodymium-iron-boron magnetic rubber.
Examples
The difference between this example and example 11 is that the mass of the modified high-performance neodymium-iron-boron magnet in step (4) is 7g, and other conditions are kept consistent.
Examples
The difference between this example and example 11 is that the mass of the modified high-performance NdFeB magnet in step (4) was 10g, and the other conditions were kept the same.
Examples
The difference between this example and example 11 is that the mass of the modified high-performance neodymium-iron-boron magnet in step (4) is 12g, and other conditions are kept consistent.
Examples
The difference between this example and example 11 is that the mass of the modified high-performance NdFeB magnet in step (4) was 15g, and the other conditions were kept the same.
| Residual magnetic flux density (T) | Coercivity (kA/m) | Shore hardness of | |
| Example 11 | 0.851 | 563.8 | 60.3 |
| Example 12 | 1.033 | 657.2 | 64.1 |
| Example 13 | 1.295 | 881.8 | 69.3 |
| Example 14 | 1.960 | 1142.6 | 72.5 |
| Example 15 | 1.898 | 1389.4 | 72.9 |
As shown in the test data of the table, with the increase of the filling quantity of the modified high-performance neodymium-iron-boron magnet in the magnetic rubber composite material, the residual magnetic flux density and the coercive force are gradually increased, because the amino groups on the surface of the high-performance neodymium-iron-boron magnet modified by the silane coupling agent are chemically crosslinked with epoxy SBS to promote dispersion in a matrix, a series of problems of performance reduction and the like caused by work hardening and magnetic powder damage due to overlarge local density of magnetic powder in the processing process are avoided, and the higher density and magnetic performance of the magnet are ensured.
The hardness of rubber is essentially the ability of the rubber to resist external pressure, reflecting the ability of the rubber network to resist deformation under external forces. Because the hardness of the rubber is high, and the NdFeB is taken as a rare earth compound, the crosslinking density and viscosity of the system can be increased, the intermolecular acting force can be improved, and the hardness of the material can be improved to some extent; when the neodymium iron boron magnetic powder is mixed with rubber, the mobility of the rubber is good, the surface of the magnetic powder can be fully infiltrated, the mechanical property of the material is improved, the magnetic property of the material is also improved to a certain extent, the mixing time of the rubber is shortened, the phenomenon of early vulcanization of a rubber matrix is prevented, and the processing safety is improved.
The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (2)
1. A preparation method of neodymium iron boron magnetic rubber is characterized in that: the preparation method comprises the following steps:
s1, dissolving (3-aminopropyl) triethoxysilane in ethanol, stirring and diluting, adding high-performance neodymium-iron-boron magnet powder into silane diluent, stirring and dispersing at 20-35 ℃, standing, and drying at 50-60 ℃ to obtain a modified high-performance neodymium-iron-boron magnet;
S2, adding the epoxidized SBS, the silicon rubber, the zinc oxide, the stearic acid, the modified high-performance neodymium-iron-boron magnet, the DM accelerator and the TT accelerator into an open mill, uniformly mixing, vulcanizing on a flat vulcanizing machine at the vulcanizing temperature of 140-160 ℃ and the vulcanizing pressure of 8-12MPa for 20-40min, and magnetizing under a magnetizing field to obtain the high-performance neodymium-iron-boron magnetic rubber;
The high-performance neodymium-iron-boron magnet powder comprises, by mass, 18-25% of Nd, 4.2-6.6% of Pr, 0.5-2.4% of Dy, 60-75% of Fe, 0.2-0.8% of Co, 0.8-2.2% of B, 0.06-0.11% of Nb, 0.1-0.5% of Zr, 0.4-1.5% of Al and 0.3-0.9% of Zn;
the preparation method of the high-performance neodymium iron boron magnet powder comprises the following steps:
(1) Putting the raw materials prepared by the components into a vacuum rapid hardening smelting furnace, vacuumizing to 0.01-0.03Pa, smelting at 1400-1500 ℃, and then pouring molten metal onto a rotating water-cooled copper roller, so as to obtain a rapid hardening casting sheet with a certain thickness at a certain roller rotating speed;
(2) Placing the rapid hardening casting sheet in the step (1) into a stainless steel hydrogen explosion tank, adding 0.02-0.11% of antioxidant and 0.03-0.08% of lubricant, absorbing hydrogen for 1-3h under the hydrogen pressure of 0.1-0.3MPa at 180-220 ℃, heating to 400-600 ℃ for dehydrogenation for 5-8h, and carrying out air flow grinding to obtain powder with the particle size of 3.5-4.5 mu m to obtain high-performance neodymium-iron-boron magnet powder;
the rotating speed of the roller in the step (1) is 1.2-3.5m/s, and the thickness of the casting sheet is 0.1-0.5mm;
the antioxidant in the step (2) is any one of 2, 6-di-tert-butyl-p-cresol, tert-butylhydroquinone or butyl hydroxy anisole;
The lubricant in the step (2) is any one of zinc stearate, aluminum stearate, magnesium stearate or mineral oil;
the mass of the (3-aminopropyl) triethoxysilane in the S1 is 1.5-3.5% of that of the neodymium-iron-boron magnet powder;
the magnetization field intensity is 1300-1400kA/m, and the magnetizing time is 25-45min.
2. The method for preparing high-performance neodymium-iron-boron magnetic rubber according to claim 1, wherein the weight parts of each additive are 15-25 parts of epoxidized SBS, 40-60 parts of silicon rubber, 3-6 parts of zinc oxide, 1-3 parts of stearic acid, 4-15 parts of high-performance neodymium-iron-boron magnet, 2-4 parts of DM accelerator and 0.2-0.8 part of TT accelerator.
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