CN1594209A - Flexible rare-earth bonded magnet and its manufacturing method - Google Patents
Flexible rare-earth bonded magnet and its manufacturing method Download PDFInfo
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- CN1594209A CN1594209A CN 200410027808 CN200410027808A CN1594209A CN 1594209 A CN1594209 A CN 1594209A CN 200410027808 CN200410027808 CN 200410027808 CN 200410027808 A CN200410027808 A CN 200410027808A CN 1594209 A CN1594209 A CN 1594209A
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Abstract
The invention discloses a flexible rare-earth bonded magnet and its manufacturing method which consists of, mixing anisotropic Nd-Fe-N magnetic powder, binding agent and manufacturing adjuvant uniformly, then employing calendaring, surface plate pressing or mixed process of calendaring and surface plate pressing, a magnetic field orientation method is employed for orienting the magnetic body during the manufacturing procedure. The component of the magnetic body includes anisotropic Nd-Fe-N magnetic powder 80-98%, adhesive 1.5-15%, vulcanizing agent 0-5%, processing auxiliary agent 0.1-5%
Description
Affiliated technical field
The present invention relates to a kind of rare-earth bound permanent magnet material, the invention still further relates to a kind of manufacture method of rare-earth bound permanent magnet material.
Background technology
The class that in the past bondd rare-earth magnet majority is the NdFeB magnet, the magnetic that such magnet adopts is many based on the Nd-Fe-B magnetic, working method is extruded, injection, mould pressing process etc., described as CN1167989A, having adopted thermoplastic resin is binding agent, it is magnetic that magnetic adopts R-Fe-B system, Sm-Co system or Sm-Fe-N, and described thermoplastic resin of this patent and above magnetic have certain affinity, and the consumption of its explanation also is fit to the processing of above magnetic.The magnet that adopts the NdFeB magnetic to make has very high magnetic property, but its shortcoming is arranged also: the antioxidant anticorrosive performance is bad, magnet need carry out special surface treatment such as electrophoresis usually and spray paint etc., though the anti-oxidation corrodibility of SmCo class magnet is good in addition, but magnetic property is not high, and prepared magnet is difficult to have flexibility, and circumnutating property is not good.
Adopt the rare-earth magnet of Nd-Fe-N magnetic to have higher magnetic property, antioxidant anticorrosive is better, the manufacturing of bonding Nd-Fe-N magnet relates to the kind of binding agent rubber or resin, the consumption of binding agent, concrete complete processing and parameter thereof, and these should give clearly.
The flexible permanent magnet material that bonds has been widely used in fields such as household electrical appliances, computer, automobile, office and factory automation, makes various small and special electric machines and magnetic device, and market potential is huge.In existing mass production techniques, the permanent magnetism powder that the flexible permanent-magnet that bonds adopts mostly is ferrite permanent-magnet powder, though this type of ferrite bonded permanent magnet has certain antioxidant anticorrosive performance and mechanical property preferably, but magnetic property is lower, can not satisfy application needs such as high-performance small and special electric machine.
Summary of the invention
The object of the present invention is to provide a kind of cost low, have excellent magnetic characteristics, the novel flexible rare-earth bond magnet of good corrosion resistance.
Another object of the present invention is to provide the manufacture method of above-mentioned flexible rare-earth cementing magnet.
A kind of flexible rare-earth cementing magnet provided by the invention, its component and weight content are:
Anisotropy neodymium-iron-nitrogen magnetic 80～98%
Binding agent 1.5～15%
Vulcanizing agent 0～5%
Processing aid 0.1～5%.
The basal component of anisotropy neodymium-iron-nitrogen magnetic that flexible rare-earth cementing magnet of the present invention adopts comprises rare earth element based on Nd, based on the transition metal of Fe, based on the fundamental element of N; Binding agent is selected one or several in chlorinatedpolyethylene (CPE), chlorosulfonated polyethylene (CSM), paracril (NBR), ethylene-propylene rubber(EPR) (EPDM), cis-1,4-polybutadiene rubber (BR), chloroprene rubber (CR), styrene-butadiene rubber(SBR) (SBR), isoprene-isobutylene rubber (IIR), silicon rubber, urethanes, thiorubber, epichlorohydrin rubber, acrylic elastomer (ACM), polyisobutylene rubber, polybutadiene rubber, polyisoamylene rubber (IR) and viton (FKM) and the thermoplastic elastomer etc. for use; Vulcanizing agent is selected organo-peroxide, magnesinm methacrylate for use, airborne sulphur body is arranged, zinc methacrylate, trihydroxy methyl propane trimethyl acrylate (TMPTA), one or several in dimethanol dimethacrylate (2G), tetrapropylene acid tetra methylol propane ester (A-TMMT) and the isocyanic acid triolefin propionic acid (TAC); Processing aid is selected one or several in coupling agent, softening agent, lubricant, anti-aging agent and the oxidation inhibitor for use.
The manufacture method of flexible rare-earth cementing magnet of the present invention is: anisotropy neodymium-iron-nitrogen magnetic, binding agent and processing aid is mixing evenly, the compounding process that adopts can be the mixing method of roll-type, the mixing method of milling machine, the mixing method of screw extrusion press, direct paddling process etc. in paddling process, the solvent, make with calendering, dull and stereotyped compacting or calendering and dull and stereotyped compacting hybrid technique then, adopt the magnetic field orientating method that magnet is orientated to obtain better magnetic property, its magneticstrength scope 0.5～50,000 Oe in the course of processing.When binding agent is selected rubber-like for use, in the course of processing, also need add vulcanizing agent and vulcanize, vulcanization is selected electron beam vulcanization, radiation vulanization, infra-red vulcanization, hot air chamber's sulfuration, fluidized bed vulcanization, microwave vulcanization or dull and stereotyped baking for use.Select whether to adopt heat treatment step according to the performance requriements of product at last.
The present invention has following beneficial effect:
1. owing to adopt homemade anisotropy neodymium-iron-nitrogen rare-earth magnetic as raw material, raw material resources are abundant also can effectively to reduce cost.
2. because the erosion resistance of anisotropy neodymium-iron-nitrogen rare-earth magnetic is better than the fast quenching NdFeB magnetic powder, so the erosion resistance of magnet of the present invention is better, thereby its use range is wider.
3. magnet of the present invention has flexibility and good magnetic property preferably.
4. magnet of the present invention can be widely used in micromotor, automobile making, fields such as electronic machine.
Embodiment
Embodiment 1
The magnet prescription is an anisotropy Nd-Fe-N magnetic 92% (weight percent), chlorinatedpolyethylene (CPE) content is 6.8% (weight percent), phthalate plasticizers 0.4% (weight percent), stearate lubricant 0.3% (weight percent), ketoamine compounds oxidation inhibitor 0.5% (weight percent), adopt the mixing method of milling machine mixing above each component to even, the mixture of gained is made into the magnetic sheet of certain thickness requirement in the roll-type rolling press, in the magnetic sheet moulding process, increased alignment magnetic field, magneticstrength is 8000Oe, makes the about 2mm of magnetic sheet thickness.The tensile strength of obtained magnet is 6.3MPa, and unit elongation is 118%, and maximum magnetic energy product is 6.5MGOe.
Embodiment 2
The magnet prescription is an anisotropy Nd-Fe-N magnetic 93.8% (weight percent), paracril (NBR) content is 4.8% (weight percent), epoxies derivative softening agent 0.3% (weight percent), phenolic compound oxidation inhibitor 0.6% (weight percent), trihydroxy methyl propane trimethyl acrylate (TMPTA) 0.5% (weight percent), adopt the mixing method of milling machine mixing above each component to even, the mixture of gained is made into the magnetic sheet of certain thickness requirement in dull and stereotyped pressure forming machine, in the magnetic sheet moulding process, also increased alignment magnetic field, magneticstrength is 12000Oe, makes the about 2mm of magnetic sheet thickness.Adopt radiation vulanization.The tensile strength of obtained magnet is 3.2MPa, and unit elongation is 54%, and maximum magnetic energy product is 7.1MGOe.
Embodiment 3
The magnet prescription is an anisotropy Nd-Fe-N magnetic 94% (weight percent), polyisobutylene rubber content is 4.8% (weight percent), hexanodioic acid ester plasticizer 0.3% (weight percent), hydrazine compound antioxidant 0.4% (weight percent), organo-peroxide 0.5% (weight percent), adopt the mixing method of milling machine mixing above each component to even, the mixture of gained is prefabricated into certain thickness magnetic sheet in the roll-type rolling press, again prefabricated magnetic sheet is made into the magnetic sheet of certain thickness requirement in dull and stereotyped pressure forming machine, accurately to be pressed into 2mm in the roll-type rolling press thick for this magnetic sheet at last, in the magnetic sheet moulding process, also increased alignment magnetic field, magneticstrength is 12000Oe, adopts infra-red vulcanization.The tensile strength of obtained magnet is 2.7MPa, and unit elongation is 43%, and maximum magnetic energy product is 7.8MGOe.
Comparative example 1
The magnet prescription is an anisotropy Nd-Fe-N magnetic 93% (weight percent), butadiene-acrylonitrile rubber (NBR) content is 5.5% (weight percent), epoxies derivative softening agent 0.4% (weight percent), phenolic compound antioxidant 0.6% (weight percent), trihydroxy methyl propane trimethyl acrylate (TMPTA) 0.5% (weight percent), adopt the mixing method of milling machine mixing above each component to even, the mixture of gained is made into the magnetic sheet of certain thickness requirement in dull and stereotyped pressure forming machine, in the magnetic sheet moulding process, do not adopt magnetic field orientating, make the about 2mm of magnetic sheet thickness.Adopt radiation vulanization.The tensile strength of obtained magnet is 3.2MPa, and unit elongation is 54%, and maximum magnetic energy product is 3.4MGOe.This magnet magnetic property is not high.
Claims (7)
1, a kind of flexible rare-earth cementing magnet, its component and weight content are:
Anisotropy neodymium-iron-nitrogen magnetic 80～98%
Binding agent 1.5～15%
Vulcanizing agent 0～5%
Processing aid 0.1～5%.
2, flexible rare-earth cementing magnet according to claim 1 is characterized in that: the basal component of described anisotropy neodymium-iron-nitrogen magnetic comprises rare earth element based on Nd, based on the transition metal of Fe, based on the fundamental element of N.
3, flexible rare-earth cementing magnet according to claim 1 is characterized in that: described binding agent is selected one or several in chlorinatedpolyethylene, chlorosulfonated polyethylene, paracril, ethylene-propylene rubber(EPR), cis-1,4-polybutadiene rubber, chloroprene rubber, styrene-butadiene rubber(SBR), isoprene-isobutylene rubber, silicon rubber, urethanes, thiorubber, epichlorohydrin rubber, acrylic elastomer, polyisobutylene rubber, polybutadiene rubber, polyisoamylene rubber, viton and the thermoplastic elastomer for use.
4, flexible rare-earth cementing magnet according to claim 1, it is characterized in that: described vulcanizing agent is selected organo-peroxide for use, airborne sulphur body, magnesinm methacrylate, zinc methacrylate, trihydroxy methyl propane trimethyl acrylate is arranged, one or several in dimethanol dimethacrylate, tetrapropylene acid tetra methylol propane ester and the isocyanic acid triolefin propionic acid.
5, flexible rare-earth cementing magnet according to claim 1 is characterized in that: described processing aid is selected one or several in coupling agent, softening agent, lubricant, anti-aging agent and the oxidation inhibitor for use.
6, the manufacture method of the described flexible rare-earth cementing magnet body of a kind of claim 1, it is characterized in that: anisotropy neodymium-iron-nitrogen magnetic, binding agent and processing aid is mixing evenly, make with calendering, dull and stereotyped compacting or calendering and dull and stereotyped compacting hybrid technique then, adopt the magnetic field orientating method magnet to be orientated its magneticstrength scope 0.5～50,000 Oe in the course of processing.
7, the manufacture method of flexible rare-earth cementing magnet according to claim 6, it is characterized in that: when binding agent is selected rubber-like for use, also need add vulcanizing agent and vulcanize in the course of processing, vulcanization is selected electron beam vulcanization, radiation vulanization, infra-red vulcanization, hot air chamber's sulfuration, fluidized bed vulcanization, microwave vulcanization or dull and stereotyped baking for use.
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| CN 200410027808 CN1594209A (en) | 2004-06-28 | 2004-06-28 | Flexible rare-earth bonded magnet and its manufacturing method |
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| CN 200410027808 CN1594209A (en) | 2004-06-28 | 2004-06-28 | Flexible rare-earth bonded magnet and its manufacturing method |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100466115C (en) * | 2006-08-14 | 2009-03-04 | 北矿磁材科技股份有限公司 | High-temperature flexible rubber bound magnet and preparing method |
| WO2010031264A1 (en) * | 2008-09-19 | 2010-03-25 | 广州金南磁塑有限公司 | Anisotropic flexible bonded ndfeb magnet and manufacturing method of the same |
| CN101800106A (en) * | 2010-04-07 | 2010-08-11 | 北京科技大学 | Preparation method of flexible anisotropy bonding rare earth permanent magnet material |
| CN101615475B (en) * | 2009-05-08 | 2011-03-16 | 北京科技大学 | Manufacturing method of flexible anisotropic bonding rare earth permanent magnet |
| CN102290190A (en) * | 2010-06-17 | 2011-12-21 | 上海东阳商贸有限公司 | Method for manufacturing high-performance permanent magnet |
| CN102693817A (en) * | 2011-11-23 | 2012-09-26 | 横店集团东磁股份有限公司 | High-performance bonded magnet processed by low-temperature plasma and preparation method thereof |
| CN103624261A (en) * | 2012-08-20 | 2014-03-12 | 南通万宝实业有限公司 | Anisotropic NdFeB composite magnetic stripe, manufacturing method thereof, external-rotor motor, external-rotor electric generator, variable frequency ceiling fan motor and hub type electric generator |
| CN104505204A (en) * | 2014-10-24 | 2015-04-08 | 横店集团东磁股份有限公司 | Rubber magnet composite and preparation method thereof |
| CN104733149A (en) * | 2013-12-23 | 2015-06-24 | 昆山优磁电子有限公司 | Bendable magnetic core and manufacturing method thereof |
| CN114023551A (en) * | 2021-10-12 | 2022-02-08 | 横店集团东磁股份有限公司 | Anisotropic rubber composite rare earth permanent magnet orientation forming process |
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2004
- 2004-06-28 CN CN 200410027808 patent/CN1594209A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100466115C (en) * | 2006-08-14 | 2009-03-04 | 北矿磁材科技股份有限公司 | High-temperature flexible rubber bound magnet and preparing method |
| WO2010031264A1 (en) * | 2008-09-19 | 2010-03-25 | 广州金南磁塑有限公司 | Anisotropic flexible bonded ndfeb magnet and manufacturing method of the same |
| CN101615475B (en) * | 2009-05-08 | 2011-03-16 | 北京科技大学 | Manufacturing method of flexible anisotropic bonding rare earth permanent magnet |
| CN101800106A (en) * | 2010-04-07 | 2010-08-11 | 北京科技大学 | Preparation method of flexible anisotropy bonding rare earth permanent magnet material |
| CN102290190A (en) * | 2010-06-17 | 2011-12-21 | 上海东阳商贸有限公司 | Method for manufacturing high-performance permanent magnet |
| CN102693817B (en) * | 2011-11-23 | 2015-06-17 | 横店集团东磁股份有限公司 | High-performance bonded magnet processed by low-temperature plasma and preparation method thereof |
| CN102693817A (en) * | 2011-11-23 | 2012-09-26 | 横店集团东磁股份有限公司 | High-performance bonded magnet processed by low-temperature plasma and preparation method thereof |
| CN103624261A (en) * | 2012-08-20 | 2014-03-12 | 南通万宝实业有限公司 | Anisotropic NdFeB composite magnetic stripe, manufacturing method thereof, external-rotor motor, external-rotor electric generator, variable frequency ceiling fan motor and hub type electric generator |
| CN103624261B (en) * | 2012-08-20 | 2015-10-14 | 南通万宝实业有限公司 | Different side's neodymium iron boron composite tape and manufacture method thereof and outward rotation type motor and motor and frequency conversion ceiling fan motor and hub dynamo |
| CN104733149A (en) * | 2013-12-23 | 2015-06-24 | 昆山优磁电子有限公司 | Bendable magnetic core and manufacturing method thereof |
| CN104505204A (en) * | 2014-10-24 | 2015-04-08 | 横店集团东磁股份有限公司 | Rubber magnet composite and preparation method thereof |
| CN114023551A (en) * | 2021-10-12 | 2022-02-08 | 横店集团东磁股份有限公司 | Anisotropic rubber composite rare earth permanent magnet orientation forming process |
| CN114023551B (en) * | 2021-10-12 | 2023-03-14 | 横店集团东磁股份有限公司 | Anisotropic rubber composite rare earth permanent magnet orientation forming process |
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