CN106816248A - Mixed glue magnetic and preparation method thereof - Google Patents
Mixed glue magnetic and preparation method thereof Download PDFInfo
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- CN106816248A CN106816248A CN201611120751.2A CN201611120751A CN106816248A CN 106816248 A CN106816248 A CN 106816248A CN 201611120751 A CN201611120751 A CN 201611120751A CN 106816248 A CN106816248 A CN 106816248A
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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
- H01F1/0578—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 bonded together
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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
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- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Hard Magnetic Materials (AREA)
Abstract
The invention provides a kind of mixed glue magnetic and preparation method thereof.The mixed glue magnetic includes magnetic, resin and curing agent, also including flexibility agent.By adding flexibility agent, make resin that there is flexibility higher, based on good flexibility so that mixed glue magnetic has good compression performance, there can be green density higher under relatively low pressing conditions.In specific magnet manufacturing process, it is only necessary to common pressing process, it is cured after, you can highdensity magnet is formed, so as to greatly improve the performance of magnet.
Description
Technical field
The present invention relates to technical field of magnetic materials, in particular to a kind of mixed glue magnetic and preparation method thereof.
Background technology
Competition now with magnetic material industry will be more and more fierce, and it is current for how working out more diversified magnetic
Many magnetic factories and the emphasis of magnet factory.
Compressibility, represents the ability that powder is compacted in pressing process, typically with powder under certain specific mo(u)lding pressure
The green density that end reaches is represented.Due to the particularity of NdFeB magnetic powder, and the limitation of technique is compressed when compacting,
Make that the compressibility of rubidium iron canopy magnetic is poor, green density is relatively low.This makes it difficult to have very big breakthrough on some specialities,
Such as High-density magnet (high density can bring high-performance), magnet ring height 40mm, density is>6.0g/cc, many magnet factories exist
Requirement can only be met by changing the modes such as design (design of electrical motor) when production this kind of product, this greatly increased out
Hair cost, wastes manpower and materials, reduces the ageing of product.For these reasons, develop a kind of by common pressure
The mixed glue magnetic that technique processed can just obtain High-density magnet will be as many magnet factories and magnetic factory very urgent problems.
The content of the invention
It is a primary object of the present invention to provide a kind of mixed glue magnetic and preparation method thereof, to solve magnetic in the prior art
Compression performance difference problem.
To achieve these goals, according to an aspect of the invention, there is provided a kind of mixed glue magnetic, it include magnetic,
Resin and curing agent, also including flexibility agent.
Further, by weight, mixing glue magnetic includes 90~99 parts of magnetic, 0.5~5 part of resin, 0.2~2
The flexibility agent of part, 0.01~1 part of curing agent.
Further, mix in glue magnetic, the weight ratio of resin and flexibility agent is 2~5:1.
Further, by weight, mixing glue magnetic includes 97.5~98.5 parts of magnetics, 1.3~1.7 parts of resin, 0.4
~0.6 part of flexibility agent and 0.02~0.04 part of curing agent；Preferably, by weight, the mixed glue magnetic also includes 0.1
~0.5 part of lubricant.
Further, flexibility agent is dimer (fatty acid) yl, carboxyl LNBR, carboxyl end of the liquid acrylonitrile-butadiene rubber, polysulfide
One or more in rubber, liquid silastic and polyethers；Resin is epoxy resin and/or phenolic resin；Preferably, resin is
Bisphenol A epoxide resin.
Further, curing agent is dicyandiamide.
Further, magnetic is rubidium iron boron magnetic powder.
According to another aspect of the present invention, there is provided a kind of preparation method of mixed glue magnetic, it is comprised the following steps：Will tree
Fat mixes with flexibility agent, melting, obtains blend melt；Magnetic and curing agent are mixed, obtains mixing magnetic；By blend melt with
Mixing magnetic is mixed, and vacuumizes stirring, and water-cooled obtains mixed glue magnetic.
Further, blend melt is included with mixing the step of magnetic is mixed：Blend melt is set to be coated on mixing
The surface of magnetic, after cooling, obtains mixed glue magnetic.
Further, blend melt is included with mixing the step of magnetic mixes：By blend melt in the way of spraying with
Mixing magnetic under stirring is mixed, and after cooling, obtains mixed glue magnetic.
Apply the technical scheme of the present invention, there is provided a kind of mixed glue magnetic and preparation method thereof.Specifically, Jiao Cifenbao is mixed
Include magnetic, resin, flexibility agent and curing agent.By adding flexibility agent, make resin that there is flexibility higher, based on good soft
Property so that mixed glue magnetic has good compression performance, can have green density higher under relatively low pressing conditions.
Brief description of the drawings
The Figure of description for constituting the part of the application is used for providing a further understanding of the present invention, of the invention to show
Meaning property and its illustrates, for explaining the present invention, not constitute inappropriate limitation of the present invention embodiment.In the accompanying drawings：
Fig. 1 shows the stereoscan photograph of mixed glue magnetic prepared by embodiments in accordance with the present invention 1；And
Fig. 2 shows the stereoscan photograph of mixed glue magnetic prepared by comparative example of the invention 1.
Specific embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
As described by background section, the compression performance of existing magnetic is poor.In order to solve this problem, this
Invention provides a kind of mixed glue magnetic, and mixing glue magnetic includes magnetic, resin and curing agent, wherein, mixed glue magnetic also includes flexible
Agent.
The above-mentioned mixed glue magnetic that the present invention is provided includes magnetic, resin, flexibility agent and curing agent.By adding flexibility agent,
Make resin that there is flexibility higher, based on good flexibility so that mixed glue magnetic has good compression performance, in relatively low pressure
There can be green density higher under the conditions of system.In specific magnet manufacturing process, it is only necessary to common pressing process, warp
After solidification, you can highdensity magnet is formed, so as to greatly improve the performance of magnet.
In above-mentioned mixed glue magnetic, as long as addition flexibility agent can improve its compression performance.In one kind preferred embodiment
In, by weight, mixing glue magnetic includes 90~99 parts of magnetic, 0.5~5 part of resin, 0.2~2 part of flexibility agent, 0.01
~1 part of curing agent.Each component is controlled with magnitude relation within the above range, more preferably to be pressed except that can have mixed glue magnetic
Beyond contracting performance, the magnetic components distribution density mixed in glue magnetic is higher, can further improve the magnetic of final magnet.Together
When, also help each side combination property that mixed glue magnetic is provided.
In a preferred embodiment, mix in glue magnetic, the weight ratio of resin and flexibility agent is 2~5:1.Resin and
The amount ratio of flexibility agent sets and is conducive to further improving the compression performance of mixed glue magnetic within the range, while also help carrying
The mechanical performance of magnet after high compression solidification.Preferably, by weight, mixing glue magnetic includes 97.5~98.5 parts of magnetics, 1.3
~1.7 parts of resins, 0.4~0.6 part of flexibility agent and 0.02~0.04 part of curing agent.It is highly preferred that by weight, mixing glue
Magnetic also includes 0.1~0.5 part of lubricant.In actual preparation process, lubricant is added to make mixed glue magnetic in pressure
The demoulding after system is more easy.Specific lubricant can use releasing agent commonly used in the art, such as zinc stearate.
As long as the flexibility agent used in the above-mentioned mixed glue magnetic of the present invention can improve the flexible of resin.A kind of preferred
Implementation method in, flexibility agent includes but is not limited to dimer (fatty acid) yl, carboxyl LNBR, end carboxyl nitrile (HTBN) rubber
One or more in glue, polysulfide rubber, liquid silastic and polyethers.The flexibility agent of these types is improved for the flexibility of resin
With larger effect, meanwhile, stable chemical performance can improve the overall performance stability of mixed glue magnetic.Meanwhile, these examinations
Agent is cheap and easy to get, is worth with large-scale application higher.
The resin used in the above-mentioned mixed glue magnetic of the present invention can be resin commonly used in the art.In a kind of preferred implementation
In mode, resin is epoxy resin and/or phenolic resin；Preferably, resin is bisphenol A epoxide resin.The chemistry of these resins
Stable performance, mechanical performance is higher after solidification, and has good compatibility with above-mentioned flexibility agent, used as the group of mixed glue magnetic
Point, can further improve the combination property of its magnet product.
According to the difference of resin, those skilled in the art can be with the type of adjustment curing agent.In a kind of preferred embodiment party
In formula, curing agent is dicyandiamide, and the curing efficiency of these curing agent is higher, speed is very fast, and the curing agent as mixed glue magnetic makes
With more suitable.
In a preferred embodiment, magnetic is rubidium iron boron magnetic powder.Rubidium iron boron magnetic powder compressibility in itself is poor, profit
With using cooperatively for the resin of the mixed glue magnetic of the present invention, flexibility agent and curing agent, its compression performance can be significantly improved.
In addition, according to another aspect of the present invention, additionally providing a kind of preparation method of mixed glue magnetic, it includes following step
Suddenly：Resin is mixed with flexibility agent, is melted, obtain blend melt；Magnetic and curing agent are mixed, obtains mixing magnetic；Will be mixed
Close melt to be mixed with magnetic is mixed, vacuumize stirring, water-cooled obtains mixed glue magnetic.
The above-mentioned preparation method that the present invention is provided, on the one hand, the flexibility agent added in the preparation of mixed glue magnetic.As above
It is described, by adding flexibility agent, make resin that there is flexibility higher, based on good flexibility so that mixed glue magnetic has good
Compression performance, under relatively low pressing conditions can have green density higher.In specific magnet manufacturing process, only
Need common pressing process, it is cured after, you can highdensity magnet is formed, so as to greatly improve the performance of magnet.It is another
Aspect, before this mixes resin with flexibility agent in the present invention, melts, and obtains blend melt；Then magnetic and curing agent are mixed,
Obtain mixing magnetic；Finally blend melt is mixed with magnetic is mixed, stirring is vacuumized, water-cooled is obtained mixed glue magnetic.Profit
Mixed with magnetic is mixed with the melt of flexibility agent with resin, in the mixed glue magnetic for obtaining, resin can disperse well with flexibility agent
Around magnetic, so as to further improve the compression performance of mixed glue magnetic.
In a preferred embodiment, blend melt is included with mixing the step of magnetic is mixed：Make mixing
Melt coating after cooling, obtains mixed glue magnetic on the surface of mixing magnetic.So, blend melt is made to be coated on mixing magnetic
Surface, is more beneficial for improving magnetic and resin and the dispersion homogeneity of flexibility agent, and then make compression performance more preferably.It is highly preferred that
Blend melt is included with mixing the step of magnetic mixes：Mixing magnetic by blend melt in the way of spraying and under stirring
Powder is mixed, and after cooling, obtains mixed glue magnetic.Because the liquid being atomized can be more abundant with the mixing magnetic under stirring
Ground contact so that resin and flexibility agent can more sufficiently uniformly be distributed in magnetic surface such that it is able to further improve mixed glue
The compression performance of magnetic.
The application is described in further detail below in conjunction with specific embodiment, these embodiments are it is not intended that limit this
Apply for scope required for protection.
Embodiment 1
Each raw material dosage such as following table：
| Magnetic | Resin | Flexibility agent | Curing agent | Lubricant |
| NdFeB magnetic powder | Bisphenol A epoxide resin | Dimeric dibasic acid | Dicyandiamide | Zinc stearate |
| 98g | 1.5g | 0.5g | 0.03g | 0.2g |
By NdFeB magnetic powder and the dry-mixed 30min of curing agent, obtain mixing magnetic.
Bisphenol A epoxide resin is mixed with dimeric dibasic acid, and 150 DEG C is heated in molten condition in reative cell, it is uniform after, obtain
To blend melt；
Blend melt is formed by spray pattern in the reative cell for installing mixing magnetic by spray gun by high pressure Ar gas, and
Rotated by the high speed of blade, drive powder so that the liquid of atomization is evenly distributed on the surface of NdFeB magnetic powder.Then it is cold
But, mixed glue magnetic is obtained.
Embodiment 2
Each raw material dosage such as following table：
| Magnetic | Resin | Flexibility agent | Curing agent | Lubricant |
| NdFeB magnetic powder | Bisphenol A epoxide resin | Dimeric dibasic acid | Dicyandiamide | Zinc stearate |
| 97.5g | 1.3g | 0.4g | 0.02g | 0.3g |
By NdFeB magnetic powder and the dry-mixed 30min of curing agent, obtain mixing magnetic.
Bisphenol A epoxide resin is mixed with dimeric dibasic acid, and 150 DEG C is heated in molten condition in reative cell, it is uniform after, obtain
To blend melt；
Blend melt is formed by spray pattern in the reative cell for installing mixing magnetic by spray gun by high pressure Ar gas, and
Rotated by the high speed of blade, drive powder so that the liquid of atomization is evenly distributed on the surface of NdFeB magnetic powder.Then it is cold
But, mixed glue magnetic is obtained.
Embodiment 3
Each raw material dosage such as following table：
By NdFeB magnetic powder and the dry-mixed 30min of curing agent, obtain mixing magnetic.
Bisphenol A epoxide resin is mixed with dimeric dibasic acid, and 150 DEG C is heated in molten condition in reative cell, it is uniform after, obtain
To blend melt；
Blend melt is formed by spray pattern in the reative cell for installing mixing magnetic by spray gun by high pressure Ar gas, and
Rotated by the high speed of blade, drive powder so that the liquid of atomization is evenly distributed on the surface of NdFeB magnetic powder.Then it is cold
But, mixed glue magnetic is obtained.
Embodiment 4
Each raw material dosage such as following table：
| Magnetic | Resin | Flexibility agent | Curing agent | Lubricant |
| NdFeB magnetic powder | Bisphenol A epoxide resin | Dimeric dibasic acid | Dicyandiamide | Zinc stearate |
| 98g | 4g | 0.8g | 0.1g | 0.1g |
By NdFeB magnetic powder and the dry-mixed 30min of curing agent, obtain mixing magnetic.
Bisphenol A epoxide resin is mixed with dimeric dibasic acid, and 150 DEG C is heated in molten condition in reative cell, it is uniform after, obtain
To blend melt；
Blend melt is formed by spray pattern in the reative cell for installing mixing magnetic by spray gun by high pressure Ar gas, and
Rotated by the high speed of blade, drive powder so that the liquid of atomization is evenly distributed on the surface of NdFeB magnetic powder.Then it is cold
But, mixed glue magnetic is obtained.
Embodiment 5
Each raw material dosage such as following table：
| Magnetic | Resin | Flexibility agent | Curing agent | Lubricant |
| NdFeB magnetic powder | Bisphenol A epoxide resin | Dimeric dibasic acid | Dicyandiamide | Zinc stearate |
| 98g | 0.6g | 0.3g | 0.01g | 0.5g |
By NdFeB magnetic powder and the dry-mixed 30min of curing agent, obtain mixing magnetic.
Bisphenol A epoxide resin is mixed with dimeric dibasic acid, and 150 DEG C is heated in molten condition in reative cell, it is uniform after, obtain
To blend melt；
Blend melt is formed by spray pattern in the reative cell for installing mixing magnetic by spray gun by high pressure Ar gas, and
Rotated by the high speed of blade, drive powder so that the liquid of atomization is evenly distributed on the surface of NdFeB magnetic powder.Then it is cold
But, mixed glue magnetic is obtained.
Embodiment 6
Each raw material dosage such as following table：
| Magnetic | Resin | Flexibility agent | Curing agent |
| NdFeB magnetic powder | Bisphenol A epoxide resin | Dimeric dibasic acid | Dicyandiamide |
| 90g | 5g | 2g | 1g |
By NdFeB magnetic powder and the dry-mixed 30min of curing agent, obtain mixing magnetic.
Bisphenol A epoxide resin is mixed with dimeric dibasic acid, and 150 DEG C is heated in molten condition in reative cell, it is uniform after, obtain
To blend melt；
Blend melt is formed by spray pattern in the reative cell for installing mixing magnetic by spray gun by high pressure Ar gas, and
Rotated by the high speed of blade, drive powder so that the liquid of atomization is evenly distributed on the surface of NdFeB magnetic powder.Then it is cold
But, mixed glue magnetic is obtained.
Embodiment 7
Each raw material dosage such as following table：
| Magnetic | Resin | Flexibility agent | Curing agent |
| NdFeB magnetic powder | Bisphenol A epoxide resin | Liquid silastic | Dicyandiamide |
| 99g | 0.5g | 0.2g | 0.01g |
By NdFeB magnetic powder and the dry-mixed 30min of curing agent, obtain mixing magnetic.
Bisphenol A epoxide resin is mixed with dimeric dibasic acid, and 150 DEG C is heated in molten condition in reative cell, it is uniform after, obtain
To blend melt；
Blend melt is formed by spray pattern in the reative cell for installing mixing magnetic by spray gun by high pressure Ar gas, and
Rotated by the high speed of blade, drive powder so that the liquid of atomization is evenly distributed on the surface of NdFeB magnetic powder.Then it is cold
But, mixed glue magnetic is obtained.
Embodiment 8
Each raw material dosage such as following table：
By NdFeB magnetic powder and the dry-mixed 30min of curing agent, obtain mixing magnetic.
Bisphenol A epoxide resin is mixed with dimeric dibasic acid, and 150 DEG C is heated in molten condition in reative cell, it is uniform after, obtain
To blend melt；
Blend melt is formed by spray pattern in the reative cell for installing mixing magnetic by spray gun by high pressure Ar gas, and
Rotated by the high speed of blade, drive powder so that the liquid of atomization is evenly distributed on the surface of NdFeB magnetic powder.Then it is cold
But, mixed glue magnetic is obtained.
Comparative example 1
By bisphenol A epoxide resin and curing agent dicyandiamide, (the two mass ratio is 3:1) acetone is dissolved in, after forming solution, will
NdFeB magnetic powder is stirred in adding to solution.Then dry, form mixed glue magnetic.
Method of testing：
(1) obtained mixed glue magnetic in embodiment 1 to 8 and comparative example 1 is carried out into the first compacting contrast, in 15t hydraulic presses
On suppressed, pressing magnetic body size isCylinder and OD27.3*ID24.3*Ht20mm annulus, magnet is put
Solidify the magnet density tested under different pressure after 1h in 175 degree of baking ovens, wherein size isCylinder correspondence
Different pressure under magnet density the results are shown in Table magnetic under the corresponding different pressure of 1, OD27.3*ID24.3*Ht20mm annulus
Volume density the results are shown in Table 2：
Table 1
Table 2
(2) ESEM is done using the mixed glue magnetic of the bonded neodymium-iron-boron prepared in embodiment 1 and comparative example 1, wherein implementing
The ESEM of the mixed glue magnetic of bonded neodymium-iron-boron prepared by example 1 is shown in Fig. 1, the mixed glue magnetic of the bonded neodymium-iron-boron prepared in comparative example 1
ESEM see Fig. 2.From the contrast of Fig. 1 and Fig. 2, the mixed glue magnetic of neodymium iron boron of the invention, between magnetic and resin
Compatibility is preferable, and denser, shows that its compression performance is more preferable.
(3) obtained mixed glue magnetic in embodiment 1 to 8 and comparative example 1 is carried out into the second compacting contrast, in 100t hydraulic presses
Magnet compacting is carried out, pressing magnetic body size isAdjustment press press power exists magnet ring density domination
6.0g/cc, compacting carries out curing process with baking oven after terminating in 175 degree, 1h, and IM-6000 image measurement instrument is used after curing process
Magnet size is measured, and tests the breaking strength of magnet and be shown in Table 3：
Table 3
Find out from above result of the test, the mixed glue magnetic that the present invention is provided, it has magnet higher under certain pressure intensity
Density, and it is higher using the breaking strength of the magnet of its preparation, showing the mixed glue magnetic of present invention offer has more preferably magnetic
Energy.
Additionally, preparation method following points advantage of the invention：1) curing agent is added by dry-mixed method, technique letter
Just；2) whole process does not need solvent, reduces cost and reduces production security；3) addition of flexibility agent, improves tree
The pliability of fat；4) resin and flexibility agent high temperature bond simultaneously, i.e. beginning through gases at high pressure is uniformly coated in magnetic with reference to complete
The surface of powder, reduces spillage of material, and uniform surface reduces the skin-friction force between powder, is conducive to the compacting of powder
Shaping, so as to obtain compressibility higher.
The preferred embodiments of the present invention are the foregoing is only, is not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (10)
1. a kind of mixed glue magnetic, including magnetic, resin and curing agent, it is characterised in that the mixed glue magnetic also includes flexibility agent.
2. mixed glue magnetic according to claim 1, it is characterised in that by weight, the mixed glue magnetic includes 90~
99 parts of the magnetic, 0.5~5 part of the resin, 0.2~2 part of the flexibility agent, 0.01~1 part of the curing agent.
3. mixed glue magnetic according to claim 2, it is characterised in that in the mixed glue magnetic, the resin and described soft
Tough dose of weight ratio is 2~5:1.
4. the mixed glue magnetic according to any one of claim 3, it is characterised in that by weight, the mixed glue magnetic
Including 97.5~98.5 parts of magnetics, 1.3~1.7 parts of the resin, 0.4~0.6 part of the flexibility agent and 0.02~
0.04 part of the curing agent；Preferably, by weight, the mixed glue magnetic also includes 0.1~0.5 part of lubricant.
5. mixed glue magnetic according to any one of claim 1 to 4, it is characterised in that the flexibility agent is dimer fatty
One kind or many in acid, carboxyl LNBR, carboxyl end of the liquid acrylonitrile-butadiene rubber, polysulfide rubber, liquid silastic and polyethers
Kind；The resin is epoxy resin and/or phenolic resin；Preferably, the resin is bisphenol A epoxide resin.
6. mixed glue magnetic according to claim 5, it is characterised in that the curing agent is dicyandiamide.
7. mixed glue magnetic according to any one of claim 1 to 3, it is characterised in that the magnetic is rubidium iron boron magnetic powder.
8. the preparation method of the mixed glue magnetic any one of a kind of claim 1 to 7, it is characterised in that including following step
Suddenly：
Resin is mixed with flexibility agent, is melted, obtain blend melt；
Magnetic and curing agent are mixed, obtains mixing magnetic；
The blend melt is mixed with the magnetic that mixes, stirring is vacuumized, water-cooled is obtained the mixed glue magnetic.
9. preparation method according to claim 8, it is characterised in that the blend melt is carried out with the magnetic that mixes
The step of mixing, includes：The blend melt is coated on the surface of the mixing magnetic, after cooling, obtain the mixed glue magnetic
Powder.
10. preparation method according to claim 8 or claim 9, it is characterised in that the blend melt is mixed into magnetic with described
The step of mixing, includes：The blend melt is mixed in the way of spraying with the magnetic that mixes under stirring,
After cooling, the mixed glue magnetic is obtained.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107603483A (en) * | 2017-09-20 | 2018-01-19 | 芜湖光影银幕制造有限公司 | Coating of packing-box design metal entrant sound curtain and preparation method thereof |
| CN109872856A (en) * | 2018-10-29 | 2019-06-11 | Neo新材料技术（新加坡）私人有限公司 | Mixed rubber magnetic powder and preparation method thereof |
| CN110715836A (en) * | 2019-10-09 | 2020-01-21 | 国合通用测试评价认证股份公司 | Preparation method of magnetic material detection sample |
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