CN104333156A - Rotor magnetic ring of high-efficiency micromotor and manufacturing method of rotor magnetic ring - Google Patents
Rotor magnetic ring of high-efficiency micromotor and manufacturing method of rotor magnetic ring Download PDFInfo
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- CN104333156A CN104333156A CN201410687959.7A CN201410687959A CN104333156A CN 104333156 A CN104333156 A CN 104333156A CN 201410687959 A CN201410687959 A CN 201410687959A CN 104333156 A CN104333156 A CN 104333156A
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- 230000005291 magnetic effect Effects 0.000 title claims abstract description 60
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 229920000299 Nylon 12 Polymers 0.000 claims abstract description 39
- 238000001746 injection moulding Methods 0.000 claims abstract description 25
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 claims abstract description 23
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 claims abstract description 23
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229920002292 Nylon 6 Polymers 0.000 claims abstract description 23
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000005642 Oleic acid Substances 0.000 claims abstract description 23
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 claims abstract description 23
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 claims abstract description 23
- 239000004927 clay Substances 0.000 claims abstract description 21
- 239000002114 nanocomposite Substances 0.000 claims abstract description 21
- 229910000859 α-Fe Inorganic materials 0.000 claims abstract description 21
- 239000002994 raw material Substances 0.000 claims abstract description 15
- JHWNWJKBPDFINM-UHFFFAOYSA-N Laurolactam Chemical compound O=C1CCCCCCCCCCCN1 JHWNWJKBPDFINM-UHFFFAOYSA-N 0.000 claims description 38
- 239000000843 powder Substances 0.000 claims description 26
- 230000005294 ferromagnetic effect Effects 0.000 claims description 20
- 238000002347 injection Methods 0.000 claims description 13
- 239000007924 injection Substances 0.000 claims description 13
- 239000002245 particle Substances 0.000 claims description 10
- 238000002360 preparation method Methods 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 7
- 238000005453 pelletization Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 6
- 238000002474 experimental method Methods 0.000 abstract description 4
- 238000012216 screening Methods 0.000 abstract description 3
- 239000006247 magnetic powder Substances 0.000 abstract description 2
- 239000004677 Nylon Substances 0.000 description 21
- 229920001778 nylon Polymers 0.000 description 21
- 239000000463 material Substances 0.000 description 10
- 238000007493 shaping process Methods 0.000 description 7
- 238000010521 absorption reaction Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000002131 composite material Substances 0.000 description 5
- 239000011230 binding agent Substances 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000000314 lubricant Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 239000012760 heat stabilizer Substances 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000005060 rubber Substances 0.000 description 2
- 229920002994 synthetic fiber Polymers 0.000 description 2
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 239000004734 Polyphenylene sulfide Substances 0.000 description 1
- PRQMIVBGRIUJHV-UHFFFAOYSA-N [N].[Fe].[Sm] Chemical class [N].[Fe].[Sm] PRQMIVBGRIUJHV-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910001172 neodymium magnet Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000011236 particulate material Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 229920000069 polyphenylene sulfide Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/02—Details of the magnetic circuit characterised by the magnetic material
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/03—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Hard Magnetic Materials (AREA)
Abstract
The invention discloses a rotor magnetic ring of a high-efficiency micromotor and a manufacturing method of the rotor magnetic ring. The rotor magnetic ring is made by ferrite magnetic powder, poly (1,9-nonyl para-phenylene diamide), polylaurolactam, nylon 6 or clay nano composite and oleic acid through injection molding. Optimal constitutional raw materials and an optimal using quantity ratio are acquired through a lot of experiment screening study; by the rotor magnetic ring manufactured by the method, mass of a motor rotor can be reduced, weight of the whole motor can be reduced, efficiency of the motor is improved, the motor is lower in noise, higher in running frequency and large in pulling-out torque, a major breakthrough on mass of the motor is made, and remarkable technological progress is made.
Description
Technical field
The present invention relates to a kind of efficient electrical micro-machine, be specifically related to a kind of new material rotor magnet ring and preparation method thereof.
Background technology
Along with the environmental requirement of energy-saving and environmental protection and the development of new and high technology, electrical micro-machine machine product is to the future development of " lightweight, high efficiency, low noise and low cost ".This just has higher requirement to the design and manufacture of electrical micro-machine.The design and manufaction of the kernel component rotor of electrical micro-machine is even more important.If current rotor main is manufactured by injection technique molding, can the various complicated shape product of one-shot forming, do not need to carry out aft-loaded airfoil and just can obtain the product that dimensional accuracy meets basic demand, can prepare complicated shape product also can automated production in enormous quantities continuously, can meet the instructions for use of the not high electrical micro-machine of General Requirements.Because the demand of world market to high efficiency electrical micro-machine rises steadily, so constantly innovate according to the industry development feature of electrical micro-machine with regard to needing, manufacture seeking breakthrough from being designed into.
Bonded ferrite material price is cheap, and has nonconducting characteristic, is thus applicable to the occasion of high frequency magnetic field, and plastics that can be different are base material makes rigidity or flexible product, and product design is more flexible than sintered magnet.Magnetic synthetic material is divided into structural type and compound two kinds.Wherein, composite magnetic material is divided into two large class, thermoplasticity and thermosettings.Thermoplastic magnetic synthetic material can be divided into two classes according to processing method, and a class is with haloflex or acrylonitrile-butadiene rubber etc. for base material, adopts the magnetic rubber that the processing technology of rubber is shaping; The another kind of injection magnet that is base material with nylon, polyphenylene sulfide.The magnetic that composite magnetic material is filled for many, as BaO6Fe2O3, SrO6FeO etc., also has another kind of magnetic powder material, as SmCo5, NdFeB and samarium iron nitrogen class with ferrite in addition.At present, the bonded ferrite of extensive use makees binding agent primarily of nylon 6, nylon 12; Although nylon 6 is cheap, have stronger mobility, its intensity is poor, and water absorption is also larger, thus after easily causing product to absorb water, size changes, useful life is also shorter, and nylon 12 intensity is good, water absorption is little, product stability, and the life-span etc. are all higher than nylon 6 injecting ferrite.But because nylon 12 is larger than the volume ratio of nylon 6, lower than the performance of nylon 6 injecting ferrite with the performance of nylon 12 injecting ferrite under weight ratio condition, and the mobility of nylon 12 is poorer than nylon 6.Lubricant mechanism is not only the phase mutual friction that can reduce between high polymer material with processing equipment, between high polymer interior molecules, between magnetic and magnetic, between magnetic and binding agent, if add as above common lubricant, heat stabilizer must be added, greatly reduce the content of magnetic like this, cause the decline of magnetic property, this is also that routine moulds the common disadvantage of magnetic product in the market, greatly have impact on efficiency and the quality of electrical micro-machine.
Therefore, in the urgent need to breaking through existing technical scheme, a kind of component proportion of design research and development is scientific and reasonable, can reduce injection mo(u)lding temperature, and properties of product are stablized, and stable molding, magnetic property is high, the rotor magnet ring of the electrical micro-machine of long service life.
Summary of the invention
Goal of the invention: the object of the invention is to overcome the deficiencies in the prior art, for prior art while adding lubricant, must add heat stabilizer, decrease particle content, causes the deficiency that the decline of magnetic property, shaping instability, life-span are short; There is provided a kind of and adopt inside and outside lubricant agent, and do not adopt the formula of heat stabilizer, not only can lower injection mo(u)lding temperature, improve access times and the utilance of material, reduce decomposition and the oxidation of nylon, and mobility improves, improve the use content of magnetic and the distributing homogeneity of magnetic, guarantee motor movement is steady, improve the performance of particulate material, reduce the density of material, make rotor lightweight, stable molding, the accuracy of manufacture is high.The product stability that rotor magnet ring provided by the invention also can solve existing for prior art is not high, and rotor quality is heavier, and useful life is shorter, the technical problem of the low grade of magnetic property.The raw material of the rotor magnet ring that the present invention preferably obtains, each component proportion is scientific and reasonable, and the intensity of binding agent is high, and water absorption is little, magnetic good.
Technical scheme, in order to realize above object, the present invention adopts following technical scheme:
A kind of rotor magnetic ring of efficient electrical micro-machine, the rotor magnetic ring of electrical micro-machine is obtained through injection moulding manufacture by ferromagnetic oxide powder, sub-nonyl terephthalate amine (nylon 9 T) of poly-1,9-, nylon 12 (nylon 12), nylon 6/ clay nanocomposites (NCH), oleic acid.
Preferably, the rotor magnetic ring of above-described efficient electrical micro-machine, the rotor magnetic ring of electrical micro-machine is obtained through injection moulding manufacture by the raw material of following weight percents:
Ferromagnetic oxide powder 80 ~ 90%, poly-1,9-sub-nonyl terephthalate amine 4 ~ 9%, nylon 12 1 ~ 5%, nylon 6/ clay nanocomposites 4 ~ 11%, oleic acid 2 ~ 6%.
As being more preferably scheme, the rotor magnetic ring of above-described efficient electrical micro-machine, the rotor magnetic ring of described electrical micro-machine is obtained through injection moulding manufacture by the raw material of following weight percents:
Sub-nonyl terephthalate amine (nylon 9 T) 5 ~ 9% of ferromagnetic oxide powder 80 ~ 85%, poly-1,9-, nylon 12 (nylon 12) 1 ~ 3%, nylon 6/ clay nanocomposites (NCH), 7 ~ 11%, oleic acid 3 ~ 6%.
As being more preferably scheme, the rotor magnetic ring of above-described efficient electrical micro-machine, the rotor magnetic ring of electrical micro-machine is obtained through injection moulding manufacture by the raw material of following weight percents:
Sub-nonyl terephthalate amine (nylon 9 T) 4 ~ 9% of ferromagnetic oxide powder 85 ~ 90%, poly-1,9-, nylon 12 (nylon 12) 3 ~ 5%, nylon 6/ clay nanocomposites (NCH), 4 ~ 6%, oleic acid 2 ~ 5%.
Preferably, the rotor magnetic ring of above-described efficient electrical micro-machine, described oleic acid selects primary oleic acid.
Preferably, the rotor of above-described efficient electrical micro-machine, described ferromagnetic oxide powder is spherical or subsphaeroidal particle.
The preparation method of the rotor magnetic ring of electrical micro-machine of the present invention, it draws together following steps:
(1) first with high-speed mixer, ferrite powder spherical for the anisotropy of pressing above-mentioned parts by weight, sub-nonyl terephthalate amine (nylon 9 T) of poly-1,9-, nylon 12 (nylon 12), nylon 6/ clay nanocomposites (NCH) and oleic acid are mixed;
(2) then use twin screw compounder at 230 ~ 250 DEG C, step (1) each component mixture is carried out fully mixingly obtain high-performance injection moulding permanent-magnet ferrite, then pelletizing is carried out, obtain the particle that average grain diameter is 2 ~ 4mm, then by injection moulding machine, at 275 ~ 300 DEG C of temperature, injection mo(u)lding obtains.Respectively fill a prescription time shaping and all add the alignment magnetic field of 10000Oe, molded samples is of a size of 10 × 10mm.
In order to improve the mobility of nylon, improve injection technique, the present invention is screened by great many of experiments, in traditional injecting ferrite, add oleic acid, and ferromagnetic oxide powder grain shape is designed to spherical or subsphaeroidal, to greatly improve the mobility of composite material, reduce the density of composite material, improve ferritic uniformity, and the magnetic property of rotor can be improved, improve thermal insulation thermal insulation, insulation property, reduce the contraction distortion of rotor.
In order to reduce the weight of rotor, improving the intensity of rotor, making rotor can with higher speed operation.The present invention, by great many of experiments screening study, adds nylon/clay nanocomposites, makes rotor element have high-fire resistance, Gao Biqiang, high-modulus, wear-resisting, fire-retardant and low expansion character, and can reduce the weight of rotor in traditional ferrite.A shortcoming of conventional nylon 12 material is that water absorption is larger, and the present invention adds appropriate nylon 9 T in traditional nylon 12 material, can improve the moisture absorption of nylon plastic(s), improves thermal stability during rotor long-term work.
Because composite material of the present invention has splendid injection technique, injection is processed the rotor obtained and is had accurate manufacturing dimension, the rotor magnet ring testing result that the present invention prepares shows, shrinkage is only 1 ‰ ~ 5 ‰ or less, change in size is minimum, mass distribution is very even. almost there is no additional centrifugal force during working rotor, not vibration, greatly reduce rotational noise, and stable size makes the air gap between rotor and stator very little (0.15 millimeter), little air gap can reduce magnetic resistance greatly, reduce electromagnetic noise, improve efficiency, compared to the prior art extraordinary technique effect is achieved.
A kind of efficient electrical micro-machine, it comprises the above-mentioned rotor magnet ring of the present invention.
Beneficial effect: efficient micro-motor rotor magnet ring provided by the invention and preparation method compared with prior art tool have the following advantages:
(1) the present invention is by the raw material composition of great many of experiments screening rotor magnet ring, preferably obtain the ferromagnetic oxide powder of specified weight ratio, poly-1,9-sub-nonyl terephthalate amine, nylon 12, nylon 6/ clay nanocomposites (NCH) and oleic acid are the raw material of rotor magnet ring, have high temperature resistant, high-lubricity, good fluidity, easily processes, the plurality of advantages such as the intensity of binding agent is high, and water absorption is little, magnetic is good.
(2) by the preferred preparation technology of the present invention, the rotor magnet ring prepared by raw material provided by the invention, not only can reduce the quality of rotor magnet ring, also can reduce complete machine weight, operating efficiency is higher, and motor noise is lower simultaneously, running frequency is higher, involve moment large, motor quality is had important breakthrough, achieve significant technological progress.
Embodiment
Below in conjunction with specific embodiment, technical scheme of the present invention is described in detail.
Embodiment 1
1, a rotor magnetic ring for efficient electrical micro-machine, it is obtained through injection moulding manufacture by the raw material of following weight percents:
Ferromagnetic oxide powder 88%, sub-nonyl terephthalate amine (nylon 9 T) 4% of poly-1,9-, nylon 12 (nylon 12) 3%, nylon 6/ clay nanocomposites (NCH) 4%, oleic acid 2%.Described ferromagnetic oxide powder is spherical.
2, the preparation method of the rotor magnetic ring of electrical micro-machine, comprises the steps:
(1) first with high-speed mixer, ferrite powder spherical for the anisotropy of parts by weight described in 1, sub-nonyl terephthalate amine (nylon 9 T) of poly-1,9-, nylon 12 (nylon 12), nylon 6/ clay nanocomposites (NCH) and oleic acid are mixed;
(2) then use twin screw compounder at 232 DEG C, step (1) each component mixture is carried out fully mixingly obtain high-performance injection moulding permanent-magnet ferrite, then pelletizing is carried out, obtain the particle that average grain diameter is 2 ~ 4mm, then by injection moulding machine, at 275 DEG C of temperature, injection mo(u)lding obtains.Respectively fill a prescription time shaping and all add the alignment magnetic field of 10000Oe, molded samples is of a size of φ 10.2 × 10mm.
Embodiment 2
1, a rotor magnetic ring for efficient electrical micro-machine, it is obtained through injection moulding manufacture by the raw material of following weight percents:
Ferromagnetic oxide powder 80%, sub-nonyl terephthalate amine (nylon 9 T) 7% of poly-1,9-, nylon 12 (nylon 12) 3%, nylon 6/ clay nanocomposites (NCH) 7%, oleic acid 5%.Described ferromagnetic oxide powder is subsphaeroidal particle.
2, the preparation method of the rotor magnetic ring of electrical micro-machine, is characterized in that: comprise the steps:
(1) first with high-speed mixer, ferrite powder spherical for the anisotropy of parts by weight described in 1, sub-nonyl terephthalate amine (nylon 9 T) of poly-1,9-, nylon 12 (nylon 12), nylon/clay nanocomposites (NCH) and oleic acid are mixed;
(2) then use twin screw compounder at 240 DEG C, step (1) each component mixture is carried out fully mixingly obtain high-performance injection moulding permanent-magnet ferrite, then pelletizing is carried out, obtain the particle that average grain diameter is 2 ~ 4mm, then by injection moulding machine, at 280 DEG C of temperature, injection mo(u)lding obtains.Respectively fill a prescription time shaping and all add the alignment magnetic field of 10000Oe, molded samples is of a size of φ 10.2 × 10mm.
Embodiment 3
1, a rotor magnetic ring for efficient electrical micro-machine, it is obtained through injection moulding manufacture by the raw material of following weight percents:
Ferromagnetic oxide powder 85%, sub-nonyl terephthalate amine (nylon 9 T) 5% of poly-1,9-, nylon 12 (nylon 12) 3%, nylon 6/ clay nanocomposites (NCH) 5%, primary oleic acid 2%.Described ferromagnetic oxide powder is spheric granules.
2, the preparation method of the rotor magnetic ring of electrical micro-machine, is characterized in that: comprise the steps:
(1) first with high-speed mixer, ferrite powder spherical for the anisotropy of parts by weight described in above-mentioned 1, sub-nonyl terephthalate amine (nylon 9 T) of poly-1,9-, nylon 12 (nylon 12), nylon/clay nanocomposites (NCH) and primary oleic acid are mixed;
(2) then use twin screw compounder at 250 DEG C, step (1) each component mixture is carried out fully mixingly obtain high-performance injection moulding permanent-magnet ferrite, then pelletizing is carried out, obtain the particle that average grain diameter is 2 ~ 4mm, then by injection moulding machine, at 300 DEG C of temperature, injection mo(u)lding obtains.Respectively fill a prescription time shaping and all add the alignment magnetic field of 10000Oe, molded samples is of a size of φ 10.2 × 10mm.
Embodiment 4
1, a rotor magnetic ring for efficient electrical micro-machine, it is obtained through injection moulding manufacture by the raw material of following weight percents:
Ferromagnetic oxide powder 90%, sub-nonyl terephthalate amine (nylon 9 T) 9% of poly-1,9-, nylon 12 (nylon 12) 5%, nylon 6/ clay nanocomposites (NCH) 11%, oleic acid 6%.Described ferromagnetic oxide powder is spheric granules.
2, the preparation method of the rotor magnetic ring of electrical micro-machine, is characterized in that: comprise the steps:
(1) first with high-speed mixer, ferrite powder spherical for the anisotropy of parts by weight described in above-mentioned 1, sub-nonyl terephthalate amine (nylon 9 T) of poly-1,9-, nylon 12 (nylon 12), nylon/clay nanocomposites (NCH) and primary oleic acid are mixed;
(2) then use twin screw compounder at 250 DEG C, step (1) each component mixture is carried out fully mixingly obtain high-performance injection moulding permanent-magnet ferrite, then pelletizing is carried out, obtain the particle that average grain diameter is 2 ~ 4mm, then by injection moulding machine, at 300 DEG C of temperature, injection mo(u)lding obtains.Respectively fill a prescription time shaping and all add the alignment magnetic field of 10000Oe, molded samples is of a size of φ 10.2 × 10mm.
The above is only the preferred embodiment of the present invention, it should be pointed out that for those skilled in the art, can also make some improvement under the premise without departing from the principles of the invention, and these improvement also should be considered as protection scope of the present invention.
Claims (7)
1. a rotor magnetic ring for efficient electrical micro-machine, is characterized in that: the rotor magnetic ring of electrical micro-machine is obtained through injection moulding manufacture by ferromagnetic oxide powder, poly-1,9-sub-nonyl terephthalate amine, nylon 12, nylon 6/ clay nanocomposites, oleic acid.
2. the rotor magnetic ring of efficient electrical micro-machine according to claim 1, is characterized in that: the rotor magnetic ring of electrical micro-machine is obtained through injection moulding manufacture by the raw material of following weight percents:
Ferromagnetic oxide powder 80 ~ 90%, poly-1,9-sub-nonyl terephthalate amine 4 ~ 9%, nylon 12 1 ~ 5%, nylon 6/ clay nanocomposites 4 ~ 11%, oleic acid 2 ~ 6%.
3. the rotor magnetic ring of efficient electrical micro-machine according to claim 2, is characterized in that: the rotor magnetic ring of electrical micro-machine is obtained through injection moulding manufacture by the raw material of following weight percents:
Ferromagnetic oxide powder 85 ~ 90%, poly-1,9-sub-nonyl terephthalate amine 4 ~ 9%, nylon 12 3 ~ 5%, nylon 6/ clay nanocomposites 4 ~ 6%, oleic acid 2 ~ 5%.
4. the rotor magnetic ring of efficient electrical micro-machine according to claim 2, is characterized in that: the rotor magnetic ring of electrical micro-machine is obtained through injection moulding manufacture by the raw material of following weight percents:
Ferromagnetic oxide powder 80 ~ 85%, poly-1,9-sub-nonyl terephthalate amine 5 ~ 9%, nylon 12 1 ~ 3%, nylon 6/ clay nanocomposites 7 ~ 11%, oleic acid 3 ~ 6%.
5. the rotor magnetic ring of the efficient electrical micro-machine according to any one of Claims 1-4, is characterized in that, described ferromagnetic oxide powder is spherical or subsphaeroidal particle.
6. the preparation method of the rotor magnetic ring of electrical micro-machine according to claim 2, is characterized in that: comprise the steps:
(1) first with high-speed mixer, ferrite powder spherical for the anisotropy of parts by weight described in claim 2, poly-1,9-sub-nonyl terephthalate amine, nylon 12, nylon 6/ clay nanocomposites and oleic acid are mixed;
(2) then use twin screw compounder at 230 ~ 250 DEG C, step (1) each component mixture is carried out fully mixingly obtain high-performance injection moulding permanent-magnet ferrite, then pelletizing is carried out, obtain the particle that average grain diameter is 2 ~ 4mm, then by injection moulding machine, at 275 ~ 300 DEG C of temperature, injection mo(u)lding obtains.
7. an efficient electrical micro-machine, is characterized in that, it comprises the rotor magnet ring described in any one of Claims 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410687959.7A CN104333156B (en) | 2014-11-25 | 2014-11-25 | Rotor magnetic ring of high-efficiency micromotor and manufacturing method of rotor magnetic ring |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410687959.7A CN104333156B (en) | 2014-11-25 | 2014-11-25 | Rotor magnetic ring of high-efficiency micromotor and manufacturing method of rotor magnetic ring |
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| CN104333156A true CN104333156A (en) | 2015-02-04 |
| CN104333156B CN104333156B (en) | 2017-02-08 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106205940A (en) * | 2016-07-07 | 2016-12-07 | 金华九禾磁电科技有限公司 | A kind of plastic magnetic rotor and preparation method thereof |
| CN110319048A (en) * | 2019-07-09 | 2019-10-11 | 横店集团东磁股份有限公司 | A kind of high-strength vehicle water pump rotor and its manufacturing method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3275882B2 (en) * | 1999-07-22 | 2002-04-22 | セイコーエプソン株式会社 | Magnet powder and isotropic bonded magnet |
| US6787059B2 (en) * | 2002-03-19 | 2004-09-07 | Toda Kogyo Corporation | Resin composition for bonded magnet and bonded magnet using the same |
| CN1808648B (en) * | 2006-01-19 | 2010-11-10 | 北京科技大学 | Preparation method of rare-earth bonding magnet |
| CN101774598A (en) * | 2009-01-12 | 2010-07-14 | 中国科学院化学研究所 | Method for preparing modified clay of alkyl ammonium salt surfactant intercalation |
| JP5447736B2 (en) * | 2011-05-25 | 2014-03-19 | Ｔｄｋ株式会社 | Rare earth sintered magnet, method for producing rare earth sintered magnet and rotating machine |
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2014
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106205940A (en) * | 2016-07-07 | 2016-12-07 | 金华九禾磁电科技有限公司 | A kind of plastic magnetic rotor and preparation method thereof |
| CN110319048A (en) * | 2019-07-09 | 2019-10-11 | 横店集团东磁股份有限公司 | A kind of high-strength vehicle water pump rotor and its manufacturing method |
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Application publication date: 20150204 Assignee: Chengdu Silver Magnetic Material Co.,Ltd. Assignor: JIANGSU LEILI MOTOR Co.,Ltd. Contract record no.: X2022980012282 Denomination of invention: Rotor magnetic ring of high-efficiency micromotor and preparation method thereof Granted publication date: 20170208 License type: Common License Record date: 20220815 |
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