CN108251915A - Long-acting strong magnetic fiber long filament of rare earth permanent-magnetic material and preparation method thereof - Google Patents
Long-acting strong magnetic fiber long filament of rare earth permanent-magnetic material and preparation method thereof Download PDFInfo
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- CN108251915A CN108251915A CN201810091016.6A CN201810091016A CN108251915A CN 108251915 A CN108251915 A CN 108251915A CN 201810091016 A CN201810091016 A CN 201810091016A CN 108251915 A CN108251915 A CN 108251915A
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/16—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one other macromolecular compound obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds as constituent
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Textile Engineering (AREA)
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Abstract
Long-acting strong magnetic fiber long filament the present invention relates to rare earth permanent-magnetic material and preparation method thereof.It is characterized in that the magnetic fibre long filament is skin-core structure, for the cortex material of fiber with core layer material using the different vector resin of polarity, the core layer material includes magnetic master batch and polyester slice, and the magnetism master batch includes by weight：The weight ratio of 35~70 parts by weight vector resins, 30~65 parts by weight rare-earth magnetic compositions, 0~5 parts by weight spin finish aid, cortex material and core layer material is 1：9~4：6, wherein rare-earth magnetic composition includes by weight：80~95 parts by weight rare-earth magnetics, 0~5 parts by weight auxiliary agent and 5~15 parts by weight coverings.Using the method for the discrepant double-layer resin cladding of this polarity, iris action can be all played to the infiltration object of opposed polarity, be conducive to obstruct the oxygen and water in air, improve the persistence of fiber magnetic induction intensity.
Description
Technical field
The present invention relates to field of textile, and in particular to a kind of long-acting strong magnetic fiber long filament of rare earth permanent-magnetic material and its
Preparation method.
Background technology
With the development of magnetic therapy technology and sanitary health career, the textile with magnetic therapy functions has been developed and throws
Enter to use.The mechanism of magnetic therapy is commonly considered as：Magnetic field promotes cycle, activation biological enzyme, control blood by reducing body fluid viscosity
Movement of Lactoferrin etc. offsets silt and subtracts swollen anti-inflammatory, reduce wound cicatrix, slow down pain, improve sleep, alleviate depression etc.
With it is reliable the effect of, it is and safe, noninvasive, nontoxic, for magnetostatic field, even if magnetic induction intensity reaches 2000G, to human body
It is still safe.In brief, magnetic therapy is exactly to be adjusted and restored in human body using this biomagnetic effect of inside of human body
Various uneven or abnormal functional states achieve the purpose that treatment.The indication of magnetic therapy generally has：Soft tissue strain and contusion,
Muscle fibre knits inflammation, external humeral epicondylitis, arthritis, the periarthritis of shoulderjoint, cervical spondylosis, soft tissue inflammation infection, bronchitis, branch
San bronchial asthma, hypertension, gastrointestinal dysfunction, canker, cholelithiasis, enruesis, neuralgia, neurosis；Hyperplasia of mammary glands,
Essential uterine bleeding, dysmenorrhoea, facial tic, temporomandibular arthritis, auricular perichondritis, capillary hemangioma etc..
Magnetic textile is a kind of material for having both textile fiber character and magnetism, wherein having magnetic object is called magnetic
Body can keep magnetic magnet to be called permanent magnet for a long time.
Permanent-magnet material is a kind of important basic function material.The basic function of permanent-magnet material, which is to provide, stablizes lasting magnetic
Flux does not need to consumption electric energy, is one of the important means of energy saving.Current permanent-magnet material substantially may be used by the height of magnetic property
It is divided into two classes, one kind is Conventional permanent magnet material, and such as aluminium nickel cobalt, ferrite, the characteristics of this kind of material is that magnetic property is relatively low, but price
It is cheap；Another kind of is rare earth permanent-magnetic material, this kind of dilute such as samarium series magnet (such as SmCo5) and neodymium series magnet (such as MgMnNd)
The characteristics of native permanent-magnet material is that magnetic property is higher, but relative price is expensive.
The development experience of permanent-magnet material Al-Ni-Co series Permanent magnet metallics (14~44KJ/m of maximum magnetic energy product) (maximum magnetic flux
Energy product be reflect magnetism of material an overall target), ferrite (barium ferrite, strontium ferrite) permanent-magnet material (maximum magnetic energy
Product 8~30KJ/M), SmCo system rare earth permanent-magnetic material (1：5 SmCos：110~160KJ/m of maximum magnetic energy product；2：17 SmCos：It is maximum
180~240KJ/m of magnetic energy product), Nd-Fe-B rare earth permanent magnetic material (230~280KJ/m of maximum magnetic energy product), samarium iron nitrogen rare earth permanent magnet
The courses such as material (maximum magnetic energy product 100KJ/m) (Pan Shuming,《Kicker magnet-rare earth permanent-magnetic material original from》, manufacture and application, change
Industrial publishing house, 2011.3).Wherein SmCo is second generation permanent-magnet material, is suitable for hot environment adaptation, because comparing containing China
The strategic element cobalt of shortage, therefore higher price.Neodymium iron boron is third generation permanent-magnet material, and containing rear earth element nd, and China possesses
Abundant rare earth resources and ferro element and boron element relative moderate, although its temperature tolerance is used as health-care textile not as good as SmCo
Product use, and do not need to very high temperature tolerance.Because its magnetic induction intensity reaches highest at present, it is known as " magnetic king ", therefore particularly suitable for
Make magnetic therapy product.The theoretical maximum magnetic energy product of forth generation permanent-magnet material samarium iron nitrogen will reach 600KJ/m, and without using strategic element
Cobalt, production cost will be less than neodymium iron boron.But not yet break through mass production techniques at present.Song Houding,《Magnetic material and device》,
It is loaded with following comparison number in April, 2007：Aluminium nickel cobalt maximum magnetic energy product is 8~88KJ/m, and barium strontium ferrite maximum magnetic energy product is 8
~36KJ/m, SmCo 1：5 type maximum magnetic energy products be 127~207KJ/m, SmCo 2：17 type maximum magnetic energy products are 175~255KJ/
M, neodymium iron boron maximum magnetic energy product are 239~446KJ/m.Therefore, neodymium iron boron is that have most ferromagnetic permanent-magnet material at present.
Currently used for the magnetic material of magnetic health-care textile, mostly ndfeb disk or ferrite magnetic fiber.The former is
Rigid block movement, Magnetic field inhomogeneity in use, the firm discomfort of sense of touch；The latter's magnetic induction intensity is very low, a maximum of about of 10Gs." magnetic king " neodymium
Iron boron has most strong magnetism, but violent oxidation reaction easily occurs after micro oxygen and (or) water is encountered, and fires
Burn phenomenon；Even if not burning, it can also generate heat, lose magnetism.Especially small particle is being used in order to adapt to co-blended spinning requirement
During magnetic powder, the specific surface area bigger of magnetic powder is more easy to fail due to ingress of air and water, becomes and Nd-Fe-B series magnetic fibre is prevented to add
The bottleneck of work manufacture.Meanwhile the more ordinary ferrite-type magnetic material of price of " magnetic king " neodymium iron boron will height.
Therefore, although currently on the market there are some magnetic function textiles, magnetic property often not high or comfort level
It is bad.It is not yet seen in and prepares long-acting strong magnetic fiber long filament by magnetic material spinning of neodymium iron boron.
The information for being disclosed in the background of invention technology segment is merely intended to deepen the reason of the general background technology to the present invention
Solution, and be not construed as recognizing or to imply that the information is formed in any form known to those skilled in the art existing
Technology.
Invention content
In view of the deficiencies of the prior art, magnetic relatively low, feel present in existing magnetic fibre long filament technology of preparing is solved
The problems such as poor, the present invention provide a kind of manufacturing method of the strong and long-acting skin-core structure magnetic fibre long filament of magnetic induction intensity.
To achieve the above object, the present invention relates to a kind of magnetic fibre long filaments, it is characterised in that the magnetic fibre long filament
For skin-core structure, the different vector resin of polarity is respectively adopted in cortex material and the core layer material of magnetic fibre long filament, and core layer material includes
Magnetic master batch and polyester slice, the magnetism master batch include by weight：35~70 parts by weight vector resins, 30~65 weight
The weight ratio of part rare-earth magnetic composition, 0~5 parts by weight spin finish aid, cortex material and core layer material is 1：9~4：6, the rare earth
Magnetic powder composition includes by weight：80~95 parts by weight rare earth permanent-magnetic material magnetic powders, 0~5 parts by weight auxiliary agent and 5~15 weights
Measure part covering.The rare-earth magnetic composition can not only make magnetic material have better stability and magnetism, and for making
Any influence is not present to processing performance when standby magnetism master batch or spinning permanent magnetism fiber filament.It is discrepant double using this polarity
Layer resin cladding method, can all play iris action to the infiltration object of opposed polarity, be conducive to obstruct air in oxygen and
Water improves the persistence of fiber magnetic induction intensity.Preferably, rare-earth magnetic composition of the invention is by 80~95 parts by weight rare earths
Permanent-magnet material magnetic powder, 0~5 parts by weight auxiliary agent and 5~15 parts by weight coverings composition.
In rare-earth magnetic composition, the magnetic powder is samarium system, neodymium series permanent-magnet material, for example, SmCo (SmCo) permanent magnet,
Nd-Fe-B permanent magnet；The magnetic powder can also be the mixture of samarium system, neodymium series permanent-magnet material and ferromagnetic oxide powder, wherein samarium system, neodymium
The weight ratio of series permanent magnetic material and ferromagnetic oxide powder is 1：1~1：5.In the present invention, rare earth permanent-magnetic material refers to rare earth
The alloy that metal and magnesium-yttrium-transition metal are formed is through permanent-magnet material made of certain technique.Particularly, rare earth permanent-magnetic material be by
The alloy of samarium, neodymium mixed rare-earth metal and transition metal (such as cobalt, iron) composition, is sintered with powder metallurgy process die mould, through magnetic
Magnetic material obtained after field is magnetized.Rare earth permanent-magnetic material divides SmCo (SmCo) permanent magnet and neodymium iron boron (NdFeB) permanent magnet.
Magnetic powder used in core layer material middle rare earth magnetic powder composition of the present invention is neodymium iron boron, and grain size is 0.1~4.0
μm。
In core layer material magnetism master batch, the spin finish aid is for improving spinning state, is answered according to practical master batch
It is chosen with demand；Such as can be anti-spider web auxiliary agent, occur during winding filament being prevented to be molded occurring around end face
The situation of line.
In a preferred embodiment of the invention, in rare-earth magnetic composition, kinematic viscosity of the covering at 40 DEG C
For 30-200m2/ s, the covering are selected from one or more of polyalphaolefin, silicone oil, vegetable oil, atoleine.Here,
In rare-earth magnetic composition, the fusing point of auxiliary agent is not above the processing temperature of resin, and generally between 100-250 DEG C, auxiliary agent is used
The oil as covering is improved to the wellability of magnetic powder, it is described to realize the oily quick cladding to magnetic powder as covering
Auxiliary agent is in silicone auxiliary agent, ethylene bis stearic acid amide, ethylene acrylic acid co polymer, amide waxe, polyethylene wax, polypropylene wax
One or more.
In another preferred embodiment of the present invention, in rare-earth magnetic composition, the range of viscosities of covering is
1000-10000mPas (25 DEG C), the covering are silane coupling agent, such as model KH550, KH560, KH570
(G570) silane coupling agent；Or for titanate coupling agent, such as the titanate esters of model NDZ-201, NDZ-101, HY-311
Coupling agent.The molecular weight of covering is not easy excessively high, and preferably between 500 to 5000, the molecular weight of covering is excessive too small all
Cause covered effect poor.Here, in rare-earth magnetic composition, the range of viscosities of auxiliary agent is 0.3-1.0mPas (25 DEG C), is helped
The boiling point of agent is more much lower than the boiling point of covering, prevents the covering in distillation process from being steamed with auxiliary agent；Auxiliary agent and packet
Covering the compatibility of agent will get well, and disperse conducive to covering in auxiliary agent, so as to equably coat magnetic powder in auxiliary agent；The molecular weight of auxiliary agent
Generally 50 to 500, boiling point is 80 to 150 DEG C；The auxiliary agent is selected from organic solvent-benzene, dimethylbenzene, acetone.Also here, into one
Preferably, in rare-earth magnetic composition, the volume of auxiliary agent is about 1.5 to 2.0 times of rare earth permanent-magnetic material magnetic powder to step；It is preferred that
Ground, auxiliary agent weight are the 0~5% of rare earth permanent-magnetic material magnetic powder weight；Preferably, the weight of covering is rare earth permanent-magnetic material magnetic
The 5~15% of powder weight, covering too high levels can influence subsequently to use, and extra covering may be heated or the effect of pressure
And leach, make the yield of magnetic master batch reduce；Content is too low, then causes to pay no attention to the covered effect of rare earth permanent-magnetic material magnetic powder
Think, coating incomplete part can contact with oxygen and/or water, and fail.
The preparation method of the magnetic fibre long filament of the present invention carries out according to the following steps：
I) the preparation of rare-earth magnetic composition, including：
1) under the protection of inert gas, make air pressure lower 0.5~1.0kPa than ambient pressure and oxygen content is less than 0.05%
In the environment of, rare earth permanent-magnetic material magnetic powder is injected into excessive covering；
2) auxiliary agent is added in the liquid composition obtained by step 1), be dispersed with stirring；
3) liquid composition obtained by step 2) is transferred in ball mill or sand mill, is ground, 300~999 turns/
It grinds 5~45 minutes under the speed divided, is optionally protected in process of lapping using inert gas；
4) liquid after grinding using Suction filtration device is filtered, filters out extra covering, obtain rare-earth magnetic combination
Object；
II) the preparation of magnetic master batch：
By 35~70 parts by weight vector resins, 30~65 parts by weight rare-earth magnetic compositions and 0~5 parts by weight spin finish aid
Through double screw extruder extruding pelletization at 180~280 DEG C, magnetism master batch is made in uniformly mixing；Particularly preferably, it is magnetic female
The preparation of grain carries out as follows：
1) to being dried as the vector resin of master batch carrier, make vector resin aqueous less than 20ppm；
2) under the protection of inert gas, 35~70 parts by weight vector resins, 30~65 parts by weight rare-earth magnetic compositions
Blender is put into 0~5 parts by weight spin finish aid, blending is uniform；
3) blend obtained by step 2) is put into double screw extruder under the protection of inert gas, at 180-280 DEG C
Through double screw extruder extruding pelletization；
4) it vacuumizes packaging using inert gas shielding, gained master batch during pelletizing using aluminium foil bag and preserves；
III) core-sheath silk：Using polyurethanes vector resin as cortex material, by step II) made magnetic master batch by 25~
50% ratio is added to mixing in polyester slice and obtains core layer material, and cortex material presses 1 with core layer material：9~4：6 weight ratios are answered with core-skin
Spinning-drawing machine spinning, winding, drawing-off are closed, obtains core-sheath silk；
IV) core-sheath silk magnetizes：Made core-sheath silk is filled in the magnetic field for being 100~120000Gs in magnetic field intensity
Magnetic, 0.1~2min of time, the magnetic fibre long filament of obtained skin-core structure.
Preferably, the inert gas is argon gas or nitrogen.
Preferably, in the step of preparing rare-earth magnetic composition, ball mill described in step 3) is vertical or horizontal ball
Grinding machine.
Preferably, in the step of preparing rare-earth magnetic composition, sand mill described in step 3) is horizontal sand mill.
Preferably, in the step of preparing rare-earth magnetic composition, Suction filtration device described in step 4) is preferably vacuum pump.
Vector resin used in cortex material and core layer material of the present invention is sliced for fibre resin.Cortex material, core
Layered material be combined as polyethylene terephthalate/polyamide 6, poly terephthalic acid fourth using the different vector resin of polarity
Diol ester/polyamide 6, polyethylene terephthalate/polyamide 66, gathers at polypropylene terephthalate/polyamide 6
One kind in mutual-phenenyl two acid bromide two alcohol ester/polyamide 66, polypropylene terephthalate/polyamide 66.
In the step of preparing rare-earth magnetic composition, preferably under inert gas shielding, first make NdFeB magnetic powder and packet
Agent mixing is covered, auxiliary agent is then added in, so as to which NdFeB magnetic powder be made to be uniformly dispersed, and is sufficiently mixed with covering.Preferably, it coats
Agent is selected from one or more of polyalphaolefin, silicone oil, vegetable oil, atoleine；It is double stearic that auxiliary agent is selected from silicone auxiliary agent, ethylene
One or more of sour amide, ethylene acrylic acid co polymer, amide waxe, polyethylene wax, polypropylene wax.
In addition, the present invention also provides the method that another kind prepares magnetic fibre long filament, the method includes：
I) the preparation of rare-earth magnetic composition, including：
1) under the protection of inert gas, rare earth permanent-magnetic material magnetic powder is injected into auxiliary agent；
2) weight that covering is added dropwise to covering in the state of stirring, in the mixture obtained into step 1) is dilute
The 5~15% of native permanent-magnet material magnetic powder weight；
3) it stirs 5-30 minutes, is sufficiently mixed the composition obtained in step 2), in rare earth permanent-magnetic material magnetic powder
Surface forms coating film；
4) it is filtered the composition obtained in step 3), filters out extra auxiliary agent, then carry out pneumatic conveying drying or shaking
Ebullated bed under dynamic state is dried, alternatively, distilled, condensed to the composition obtained in step 3), make auxiliary agent with it is dilute
Native permanent-magnet material magnetic powder is separated and recovered from auxiliary agent, obtains rare-earth magnetic composition；
II) the preparation of magnetic master batch：
By 35~70 parts by weight vector resins, 30~65 parts by weight rare-earth magnetic compositions and 0~5 parts by weight spin finish aid
Through double screw extruder extruding pelletization at 180~280 DEG C, magnetism master batch is made in uniformly mixing；Particularly preferably, core layer material
The preparation of magnetic master batch carries out as follows：
1) to being dried as the vector resin of master batch carrier, make vector resin aqueous less than 20ppm；
2) under the protection of inert gas, 35~70 parts by weight vector resins, 30~65 parts by weight rare-earth magnetic compositions
Blender is put into 0~5 parts by weight spin finish aid, blending is uniform；
3) blend obtained by step 2) is put into double screw extruder under the protection of inert gas, at 180-280 DEG C
Through double screw extruder extruding pelletization；
4) it vacuumizes packaging using inert gas shielding, gained master batch during pelletizing using aluminium foil bag and preserves；
III) core-sheath silk：Using polyurethanes vector resin as cortex material, by step II) made magnetic master batch by 25~
50% ratio is added to mixing in polyester slice and obtains core layer material, cortex material and core layer material, by 1：9~4：6 weight ratio core-skins
Composite spinning machine spinning, winding, drawing-off obtain core-sheath silk；
IV) core-sheath silk magnetizes：Made core-sheath silk is filled in the magnetic field for being 100~120000Gs in magnetic field intensity
Magnetic, 0.1~2min of time, the magnetic fibre long filament of obtained skin-core structure.
Preferably, during above-mentioned preparation magnetism master batch, it is preferable that covering is selected from silane coupling agent or titanate esters
Coupling agent；Auxiliary agent is selected from organic solvent-benzene, dimethylbenzene or acetone.
Preferably, the inert gas is argon gas or nitrogen.
Preferably, in the step of preparing rare-earth magnetic composition, filter device described in step 4) is preferably vacuum pump.
In the step of preparing rare-earth magnetic composition, the rare-earth magnetic composition obtained is measured by TGA,
It can determine the content of coupling agent, and infer that it directly affects the degree of covered effect.
In addition, in a preferred embodiment of the invention, also provide a kind of method for preparing magnetic fibre long filament, the side
Method includes：
I) the preparation of rare-earth magnetic composition, including：
1) inert gas is persistently filled in control box, discharges air therein, the air pressure in control box is made to be less than environment
0.5~1.0kPa of air pressure makes oxygen content that covering is added in control box less than 0.05%；
2) then, sequentially rare earth permanent-magnetic material magnetic powder and auxiliary agent are added in control box, using heating stirring machine, 50~
20~30min is stirred at 80 DEG C, covering, auxiliary agent and rare earth permanent-magnetic material magnetic powder are dispersed with stirring uniformly, wherein the rare earth
Permanent-magnet material magnetic powder is rare earth permanent-magnetic material and the mixture of ferrite-type magnetic powder, and mixed proportion is 1 ﹕, 1~1 ﹕ 5, mixture
Grain size is 0.1~4.0 μm；
3) optionally under air or inert gas atmosphere, the composition obtained by step 2) using vacuum pump is filtered, is filtered out
Extra covering obtains rare-earth magnetic composition；
II) the preparation of magnetic master batch：
By 35~70 parts by weight vector resins, 30~65 parts by weight rare-earth magnetic compositions and 0~5 parts by weight spin finish aid
Through double screw extruder extruding pelletization at 180~280 DEG C, magnetism master batch is made in uniformly mixing；Particularly preferably, core layer material
The preparation of magnetic master batch carries out as follows：
1) to being dried as the vector resin of master batch carrier, make vector resin aqueous less than 20ppm；
2) under the protection of inert gas, 35~70 parts by weight vector resins, 30~65 parts by weight rare-earth magnetic compositions
Blender is put into 0~5 parts by weight spin finish aid, blending is uniform；
3) blend obtained by step 2) is put into double screw extruder under the protection of inert gas, at 180-280 DEG C
Through double screw extruder extruding pelletization；
4) it vacuumizes packaging using inert gas shielding, gained master batch during pelletizing using aluminium foil bag and preserves；
III) core-sheath silk：Using polyurethanes vector resin as cortex material, by step II) made magnetic master batch by 25~
50% ratio is added to mixing in polyester slice and obtains core layer material, and cortex material presses 1 with core layer material：9~4：6 weight ratios are answered with core-skin
Spinning-drawing machine spinning, winding, drawing-off are closed, obtains core-sheath silk；
IV) core-sheath silk magnetizes：Made core-sheath silk is filled in the magnetic field for being 100~120000Gs in magnetic field intensity
Magnetic, 0.1~2min of time, the magnetic fibre long filament of obtained skin-core structure.
In the step of preparing rare-earth magnetic composition, the babinet of the control box may be used on fluid mechanical design
The inert gas of various different densities effectively excludes air, does not stay the dead angle of air pocket；The control box is connected with negative simultaneously
Pumping equipment is pressed, in favor of extracting air or being pumped into inert gas；Optionally, vacuum degree inspection is provided in different working positions
Measurement equipment, humidity and temperature testing equipment；Also optionally, setting remote control arm, can be fed, stirred outside control box,
The operations such as discharging, so as to make each component dispersion mixing in rare-earth magnetic composition uniform.
Preferably, in the step of preparing rare-earth magnetic composition, covering is selected from silane coupling agent or titanate esters are coupled
Agent；Auxiliary agent is selected from organic solvent-benzene, dimethylbenzene or acetone.It is further preferred that in the step of preparing rare-earth magnetic composition, cladding
Agent is selected from one or more of polyalphaolefin, silicone oil, vegetable oil, atoleine；It is double stearic that auxiliary agent is selected from silicone auxiliary agent, ethylene
One or more of sour amide, ethylene acrylic acid co polymer, amide waxe, polyethylene wax, polypropylene wax.
The magnetic fibre long filament of the present invention by the way of skin-core structure, adopt by the cortex material and core layer material of magnetic fibre long filament
With the different vector resin of polarity, while core layer material addition rare-earth magnetic composition.It the advantage is that：Skin-core structure ensure that institute
Fiber filament surfacing obtained is smooth, can improve the fabric feeling subsequently weaved and obtained.Core layer material adds rare-earth magnetic group
Close object, cortex material and core layer material have effectively completely cut off air and moisture using the different resin of polarity, magnetic long-acting of fiber filament
Property is protected.Auxiliary agent is added in the rare-earth magnetic composition of core layer material can effectively increase the phase of magnetic powder and vector resin
Capacitive, and magnetic powder can be played insulating effect by adding in covering, prevented oxygen from reacting with water to rare-earth magnetic, led to magnetic powder
Failure.
Specific embodiment
A kind of magnetic fibre long filament that the present invention designs, it is characterised in that the fiber filament be skin-core structure, magnetic fibre
The different vector resin of polarity is respectively adopted in the cortex material of long filament and core layer material, and core layer material is also added with rare-earth magnetic composition.
Core-skin weight ratio of the present invention is 1：9~4：6.The sandwich layer ratio if the cortex ratio of fiber filament is too small
Excessive, although the magnetic property of fiber filament can be improved, on the one hand excessively thin cortex can influence spinning properties, on the other hand
Can also have an adverse effect to the weaving of rear road.And the cortex ratio of fiber filament is excessive and when sandwich layer ratio is too small, fiber filament
Magnetic property can be decreased obviously.
With reference to embodiment, the specific embodiment of the present invention is further described.Following embodiment is only used for more
Add and clearly demonstrate technical scheme of the present invention, and be not intended to limit the protection scope of the present invention and limit the scope of the invention.
Specific embodiments of the present invention are as follows：
The preparation of 1 rare-earth magnetic composition of embodiment
Argon gas is persistently filled in control box, discharges air therein, the air pressure in control box, which is maintained at, compares ambient pressure
Low 1.0kPa, oxygen content 0.05%.90 parts of NdFeB magnetic powders are injected into 20 parts of vegetable oil, then add in 1.5 parts of silicone
Auxiliary agent is simultaneously transferred in vertical ball mill, the magnetic powder composition after being coated.Vacuum pump suction filtration is carried out to the magnetic powder composition,
It filters out 11.5 parts of extra coverings and obtains final neodymium-iron-boron compound powder.
The preparation of the magnetic master batch of embodiment 2
Under the protection of nitrogen, the rare-earth magnetic composition of 40 parts by weight of example 1 is added to 60 parts by weight and is gathered to benzene
Mixing is mixed in first naphthalate slice powder, by double screw extruder extruding pelletization, obtains magnetic master batch.
It the preparation of 3 core-sheath silk of embodiment and magnetizes
Take dried poly- to 60 parts of benzene first naphthalate, 40 parts obtained of magnetic master batch in embodiment 2, through filling
Divide and be mixed to get core layer material.It is 25 by core-skin weight ratio using dried polyamide 6 section as cortex material：75, use core-sheath
Core-sheath silk is made in spinning-drawing machine spinning, rolled, drawing-off.
It magnetizes to obtained core-sheath silk, magnetize 1min in the magnetic field of 12000Gs intensity, obtains magnetic fibre
Tie up long filament.Magnetic induction intensity after woven into fabric after 10000Gs high-intensity magnetic fields magnetize 30s is 101Gs.By fabric washing 10 times
Afterwards, magnetic induction intensity 98.7Gs.
It the preparation of 1 core-sheath silk of comparative example and magnetizes
Other than core material layer and cladding layer use gather to benzene first naphthalate simultaneously, with same as Example 3
Core-sheath silk is made in preparation method.
It magnetizes to obtained core-sheath silk, magnetize 45s in the magnetic field of 12000Gs intensity, obtains magnetic fibre
Tie up long filament.Through measuring after woven into fabric, magnetic induction intensity 107.1Gs.After fabric washing 10 times, magnetic induction intensity is
81.8Gs。
It the preparation of magnetic fibre of the comparative example 2 without skin-core structure and magnetizes
Take dried poly- to 70 parts of benzene first naphthalate, 30 parts obtained of magnetic master batch is through filling in embodiment 2
After dividing mixing, with spinning-drawing machine spinning, fiber filament is made in rolled, drawing-off.
It magnetizes to obtained fiber filament, magnetize 1min in the magnetic field of 12000Gs intensity, obtains magnetic fibre
Long filament.Through measuring after woven into fabric, magnetic induction intensity 98.2Gs.After fabric washing 10 times, magnetic induction intensity is
63.1Gs。
Compared with comparative example 1, the magnetic fibre woven into fabric as made from the core-sheath silk of the present invention of embodiment 3 magnetizes
Magnetic induction intensity afterwards is substantially the same, but after 10 washings are carried out, hence it is evident that higher than the magnetic field of the fabric of comparative example 1
Loudness is sensed, this is because the vector resin for having used polarity different in the cladding and core material of the core-sheath silk of the present invention.
Compared with comparative example 2, embodiment 3 as the present invention core-sheath silk made from magnetic fibre woven into fabric magnetize after magnetic field
Induction is already higher than the magnetic induction intensity of non-skin-core structure fiber woven into fabric.Particularly the fabric of comparative example 2 into
After row washing, magnetic induction intensity declines significantly, and the magnetic induction intensity of 3 gained fabric of embodiment has still maintained fine
Effect.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvements and modifications can also be made, these improvements and modifications
Also it should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of magnetic fibre long filament, it is characterised in that the magnetic fibre long filament be skin-core structure, the skin of magnetic fibre long filament
The different vector resin of polarity is respectively adopted in layered material and core layer material, and wherein core layer material includes magnetic master batch and polyester slice,
Wherein described magnetic master batch includes by weight：35~70 parts by weight vector resins, 30~65 parts by weight rare-earth magnetics
The weight ratio of composition, 0~5 parts by weight spin finish aid, cortex material and core layer material is 1：9~4：6；
The rare-earth magnetic composition includes by weight：80~95 parts by weight rare earth permanent-magnetic material magnetic powders, 0~5 parts by weight
Auxiliary agent and 5~15 parts by weight coverings.
2. magnetic fibre long filament according to claim 1, wherein the covering in the rare-earth magnetic composition is selected from poly- α
One or more of alkene, silicone oil, vegetable oil, atoleine, the auxiliary agent in the rare-earth magnetic composition are helped selected from silicone
One or more of agent, ethylene bis stearic acid amide, ethylene acrylic acid co polymer, amide waxe, polyethylene wax, polypropylene wax.
3. magnetic fibre long filament according to claim 1, wherein the covering in the rare-earth magnetic composition is selected from silicon
Alkane coupling agent or titanate coupling agent, the auxiliary agent in the rare-earth magnetic composition are selected from organic solvent-benzene, dimethylbenzene or acetone.
4. magnetic fibre long filament according to claim 1, wherein vector resin used in the core layer material and cortex material
It is sliced for fibre resin, the core layer material vector resin different with polarity used in cortex material is combined as poly terephthalic acid second
Diol ester/polyamide 6, polybutylene terephthalate (PBT)/polyamide 6, polypropylene terephthalate/polyamide 6, poly- pair
Ethylene terephthalate/polyamide 66, polybutylene terephthalate (PBT)/polyamide 66, polypropylene terephthalate/
One kind in polyamide 66.
5. magnetic fibre long filament according to claim 1, wherein the rare-earth magnetic composition is dilute by 80~95 parts by weight
Native permanent-magnet material magnetic powder, 0~5 parts by weight auxiliary agent and 5~15 parts by weight coverings composition.
6. a kind of method for preparing magnetic fibre long filament according to any one of claim 1 to 5, including：
I) the preparation of rare-earth magnetic composition；
II) the preparation of magnetic master batch：
35~70 parts by weight vector resins, 30~65 parts by weight rare-earth magnetic compositions and 0~5 parts by weight spin finish aid is uniform
Through double screw extruder extruding pelletization at 180~280 DEG C, magnetism master batch is made in mixing；
III) the preparation of core-sheath silk：Using polyamide-based vector resin as cortex material, by step II) made magnetic master batch presses 25
~50% ratio is added to mixing in polyester slice and obtains core layer material, and cortex material presses 1 with core layer material：9~4：6 weight ratio skin
The spinning of core composite spinning machine, winding, drawing-off, obtain core-sheath silk；
IV) core-sheath silk magnetizes：It magnetizes in the magnetic field for being 100~120000Gs in magnetic field intensity to made core-sheath silk,
The magnetic fibre long filament of skin-core structure is made in 0.1~2min of time.
7. the method according to claim 6 for preparing magnetic fibre long filament, wherein step I) include：
1) under the protection of inert gas, make air pressure lower 0.5~1.0kPa than ambient pressure and oxygen content be less than 0.05% ring
Under border, rare earth permanent-magnetic material magnetic powder is injected into excessive covering；
2) auxiliary agent is added in the liquid composition obtained by step 1), be dispersed with stirring；
3) liquid composition obtained by step 2) is transferred in ball mill or sand mill, be ground, at 300~999 revs/min
It grinds 5~45 minutes under speed, is optionally protected in process of lapping using inert gas；
4) liquid after grinding using Suction filtration device is filtered, filters out extra covering, obtain rare-earth magnetic composition.
8. the method according to claim 7 for preparing magnetic fibre long filament, wherein step I) used in covering be selected from
One or more of polyalphaolefin, silicone oil, vegetable oil, atoleine, auxiliary agent be selected from silicone auxiliary agent, ethylene bis stearic acid amide,
One or more of ethylene acrylic acid co polymer, amide waxe, polyethylene wax, polypropylene wax.
9. the method according to claim 6 for preparing magnetic fibre long filament, wherein step I) include：
1) under the protection of inert gas, rare earth permanent-magnetic material magnetic powder is injected into auxiliary agent；
2) weight that covering is added dropwise to covering in the state of stirring, in the mixture obtained into step 1) is Rare-Earth Magnetic
The 5~15% of powder permanent-magnet material weight；
3) it stirs 5-30 minutes, is sufficiently mixed the composition obtained in step 2), on the surface of rare earth permanent-magnetic material magnetic powder
Form coating film；
4) it is filtered the composition obtained in step 3), filters out extra auxiliary agent, then carry out pneumatic conveying drying or in vibration shape
Ebullated bed under state is dried, alternatively, being distilled, being condensed to the composition obtained in step 3), makes auxiliary agent and rare earth forever
Magnetic material magnetic powder is separated and recovered from auxiliary agent, obtains rare-earth magnetic composition.
10. the method according to claim 9 for preparing magnetic fibre long filament, wherein step I) used in covering be selected from
Silane coupling agent or titanate coupling agent, auxiliary agent are selected from organic solvent-benzene, dimethylbenzene or acetone.
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Address after: 316200 Dong Hai Road, Gao Ting Town, Daishan County, Zhoushan, Zhejiang, 171 Applicant after: Zhoushan Xinxin Fiber Co., Ltd. Applicant after: Suzhou Baoli Di material Polytron Technologies Inc Address before: 316200 Dong Hai Road, Gao Ting Town, Daishan County, Zhoushan, Zhejiang, 171 Applicant before: Zhoushan Xinxin Fiber Co., Ltd. Applicant before: POLY PLASTIC MASTERBATCH (SUZHOU) CO., LTD. |
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