CN101000818A - Adhesive electric machine magnetic strip and preparation method thereof - Google Patents
Adhesive electric machine magnetic strip and preparation method thereof Download PDFInfo
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- CN101000818A CN101000818A CN 200610049055 CN200610049055A CN101000818A CN 101000818 A CN101000818 A CN 101000818A CN 200610049055 CN200610049055 CN 200610049055 CN 200610049055 A CN200610049055 A CN 200610049055A CN 101000818 A CN101000818 A CN 101000818A
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Abstract
A adhesive magnetic strip of motor is prepared as forming bound magnetic strip of motor by 3-8 layer flattening and pressing process; forming internal layer by compositions in wt% as magnetic powder of 80-95%, polyethylene of 2-10%, plasticizer of 1-4%, stabilizer of 1-3% and coupling agent of 01-3%; forming two external layers by compositions in wt% as magnetic powder of 80-95%, polyethylene of 2-10%, hotmelt adhesive of 1-6%, stabilizer of 1-2% and coupling agent of 0.1-3%.
Description
Technical field
The present invention relates to a kind of magnetic stripe and preparation method thereof, relate in particular to a kind of adhesive electric machine magnetic strip and preparation method thereof, belong to miniature specific type of electric machine field.
Background technology
It is that a kind of volume, capacity are less that miniature specific type of electric machine is called for short electrical micro-machine, power output generally requires special motor at the motor below hundreds of watts and purposes, performance and environmental condition, be usually used in the control system, realize dynamoelectric signal or energy detection, resolve, amplify, functions such as execution or conversion, or be used for the rotary machine load, also can be used as the AC and DC power supply of equipment.
Miniature specific type of electric machine structurally substantially can be divided into 3 classes: 1. electromagnetic type.Basic composition is similar to common electric machine, comprises parts such as stator, rotor, armature winding, brush, but structural Case is outer compact.2. composite type.Common has two kinds: the combination of above-mentioned various electrical micro-machines; The combination of electrical micro-machine and electronic circuit.The for example combination of DC motor and transducer, the combination of directions X and Y direction linear motor etc.3. non electromagnetic.Contour structures is the same with electromagnetic type, makes cylindrically as the rotation series products, and the straight line series products is made squarely, but internal structure is very big because of its operation principle difference difference.Electrical micro-machine is mainly used in 3 fields: the Driving Field cooperation of 1. not having special control requirement is the power source of movable machinery load.2. audio and video equipment.For example, in video cassette recorder, small and special electric machine is the key element of DM drum module, is again that its capstan drives, receives for the automatic loading of band and cassette and the critical elements of magnetic tape tension control.3. business automation equipment, computer peripheral and industrial automation equipment.All used small and special electric machine as disc driver, photocopier, Digit Control Machine Tool, robot etc.
And the ferrite electric machine magnetic strip is different in nature bonded permanent magnet, is widely used in the VCD motor that delivers from godown, the cpu fan motor, the TV remote antenna, electrical micro-machines such as rewinder are not only the requirement of magnetic property for its quality, also dimensional accuracy of products and consistency are had higher requirement.Though the electric machine magnetic strip thickness and precision of prior art is within ± 0.05 millimeter, some even requirement are within ± 0.03 millimeter, and counter electromotive force of motor difference is within 2%.Because little property specific type of electric machine belongs to high-accuracy element.The surface can not have foreign material, so prevent that with talcum powder the magnetic stripe problem is inter-adhesive inadvisable usually.Can only be solved from magnetic stripe itself.
Summary of the invention
The present invention is from magnetic stripe itself, thus from the magnetic stripe top layer set about composition by reasonable adjustment magnetic stripe and content thereof particularly outside two-layer composition and content thereof solved prior art because electrical micro-machine belongs to high-accuracy element.The surface can not have foreign material, uses talcum powder to prevent the inter-adhesive worthless problem of magnetic stripe problem.
The present invention also provides the preparation method of adhesive electric machine magnetic strip.
Above-mentioned technical problem of the present invention is implemented by the following technical programs: a kind of adhesive electric machine magnetic strip is characterized in that described adhesive electric machine magnetic strip prolongs by 3～8 layers to be pressed into:
Wherein said internal layer comprises by following percentage by weight composition:
Magnetic: 80%～95%; Polyethylene: 2～10%;
Plasticizer: 0～4% (not comprising 0); Stabilizer: 0～3% (not comprising 0);
Coupling agent 0.1～3%;
Described outer two layers comprise by following percentage by weight composition:
Magnetic: 80%～95%; Polyethylene: 2～10%;
Thermosol: 1%～6%; Stabilizer: 0～2% (not comprising 0);
Coupling agent: 0.1%～3%;
Adhesive electric machine magnetic strip of the present invention is that a kind of opposite sex calendering magnetic synthetic material product is mainly used in the magnetic stripe on the miniature specific type of electric machine, so be not only that magnetic property, dimensional accuracy of products and consistency are had higher requirement for its quality; And its adhesive property also had certain requirement, and because little property specific type of electric machine belongs to high-accuracy element. the surface can not have foreign material, so prevent that with talcum powder the magnetic stripe problem is inter-adhesive inadvisable usually. can only be solved from magnetic stripe itself.The inventor finds above-mentioned electric machine magnetic strip is divided into internal layer and two-layer outward by studying for a long period of time, the composition of its two layers of employings in China and foreign countries not only satisfies with the electric machine magnetic strip of the different feasible preparations of internal layer has higher requirement to magnetic property, dimensional accuracy of products and consistency, and having solved prior art because electrical micro-machine belongs to high-accuracy element. the surface can not have foreign material, uses talcum powder to prevent the inter-adhesive worthless problem of magnetic stripe problem.
In above-mentioned adhesive electric machine magnetic strip, the composition preferred weight percent of described internal layer is:
Magnetic: 86%～92%; Polyethylene: 6～9%;
Plasticizer: 0～2% (not comprising 0); Stabilizer: 0～1% (not comprising 0);
Coupling agent 0.5～2%;
Described outer two composition of layer preferred weight percent are:
Magnetic: 86%～92%; Polyethylene: 5～8%;
Thermosol: 2%～5%; Stabilizer: 0～1% (not comprising 0);
Coupling agent: 0.5%～2%;
As preferably, described magnetic is that described magnetic is a kind of in barium ferrite magnetic powder, the strontium ferrite magnetic powder.
As preferably, described polyethylene is a haloflex; Haloflex (CPE) is the chlorination modified product of high density polyethylene (HDPE) (HDPE), and the chlorinity of CPE should be between 35-38%.Because CPE has good weatherability, cold resistance, flame resistance, oil resistance, impact resistance (CPE is an elastomer) and chemical stability, CPE has become anti-impact plasticized modifier preferably.
In above-mentioned bonding electric machine magnetic strip, described plasticizer is one or both in dioctyl phthalate or the DOTP.Dioctyl phthalate Dioctyl Phthalate (be called for short DOP) molecular formula: C wherein
24H
38O
4, molecular weight: 390.62, DOP has the plasticizing efficiency height; Volatility is little; Ultraviolet resistance is strong; Water-fast extraction; Animal migration is little; Cold resistance is good; Flexibility; Advantages such as good electrical property; So this plasticizer is a kind of good plastic plasticizer, is suitable for haloflex most, DOTP Dioctyl Terephalate (being called for short DOTP) molecular formula: C
24H
38O
4, molecular weight: 390.56, this composition has good electrical properties and cold resistance, and volatility is little.As preferably, described plasticizer is a dioctyl phthalate.
In above-mentioned bonding electric machine magnetic strip, described stabilizer is a stearate; CPE in processing and forming because of degrading because of external condition effects such as heat, light, oxygen in physical actions such as heat, friction, shearing and the use, thereby make the performance depreciation of magnetic stripe, even lose use value.Take place for suppressing this phenomenon, need to add stabilizer.The molecular structure of CPE has active group, be heated about 100 ℃ or strong shear action under will degrade and discharge HCL gas, make CPE turn brown by white gradually to black, simultaneously, HCL gas also has autocatalysis, impels CPE further to degrade.Under the processing and forming temperature about 160 ℃, degradation reaction is quickened, and variable color, crosslinked also takes place when taking off HCL, thereby make performance depreciation.Stearate has following function as stabilizer: the HCL that deviates from (1) absorption or neutralization processing and the use stops its autocatalysis; (2) unsettled chlorine atom in the displacement CPE strand suppresses to take off the HCL reaction; (3) with polymerizable molecular in two key generation addition reactions, eliminate or slow down the goods variable color; (4) prevent the molecular structure oxidation; (5) in and CPE in impurity, as catalyst residues, end group etc.As preferably, described stearate is calcium stearate [Ca (St)
2], zinc stearate [Zn (St)
2] in one or both, its China and foreign countries two layers of used stabilizer be calcium stearate [Ca (St)
2].
In above-mentioned bonding electric machine magnetic strip, described coupling agent is that described coupling agent is one or both in titanate coupling agent or the silane coupler.Because magnetic is a hydroaropic substance, polyethylene is a lipophilicity substance, crosslinked must being finished by coupling agent between the two; Wherein said silane coupler mainly contains the chain alkyl trimethoxy silane, vinyltriethoxysilane, vinyltrimethoxy silane, the Y-chloropropyl triethoxysilane, two-[Y-(triethoxysilicane) propyl group] tetrasulfide, N-(β-aminoethyl)-Y-aminopropyl trimethoxysilane, N-(β-aminoethyl)-Y-aminopropyl triethoxysilane, N-(β-aminoethyl)-Y-aminopropyl methyl dimethoxysilane, Y-(2,3-epoxy third oxygen) propyl trimethoxy silicon, Y-(methacryloxypropyl) oxypropyl trimethyl oxosilane, materials such as Y-mercaptopropyl trimethoxysilane; Described titanate coupling agent mainly contains titanate coupling agent (NDZ-101), titanate coupling agent (NDZ-102), titanate coupling agent (NDZ-105), titanate coupling agent (NDZ-130), titanate coupling agent (NDZ-201), titanate coupling agent (NDZ-311), titanate coupling agent (NDZ-311w), titanate coupling agent materials such as (NDZ-401).
As preferably, described PUR is for being ethylene-vinyl acetate copolymer (EVA); Described ethylene-vinyl acetate copolymer (EVA) is the high pressure polymerisation in bulk for ethylene-vinyl acetate-maleic anhydride terpolymer, and the content of its comonomer is: 7-35%; Melt flow index 0.3-320g/10mn.
In above-mentioned bonding electric machine magnetic strip, described internal layer comprises by following percentage by weight composition epoxidized soybean oil (EBSO) 0～2% (not comprising 0).Epoxidized soybean oil (EBSO) is mainly as the nontoxic plasticizer of the magnetic stripe of the present invention stabilizer of holding concurrently, and epoxidized soybean oil keeps light, thermal stability to the CPE product, and anti-aging increasing the service life plays extremely important effect.
A kind of preparation method of adhesive electric machine magnetic strip is characterized in that being made up of following steps:
(1) batching: earlier magnetic and coupling agent are weighed up in proportion, drop into batch mixer and stirred 3～10 minutes, continue stirring 2～5 minutes after dropping into other auxiliary material again; The auxiliary material that wherein prepare internal layer magnetic sheet input are polyethylene, plasticizer, stabilizer, epoxidized soybean oil; The outer two layers of auxiliary material that improves the magnetic sheet input of preparation are polyethylene, thermosol, stabilizer.
(2) open refining, banburying: the roll spacing of mill is transferred to 0.5～1.5mm, the compound after the above-mentioned stirring is dropped into the roller 3～6min that turns refining; After cutting after film is even, drop into banburying in the banbury, banburying pressure is 0.2～1.0Mpa, and the temperature of banburying is 70～130 ℃, and the banburying time is 15～30min;
(3) pulverizing, slice: the particulate material after the above-mentioned banburying is dropped into pulverizer pulverized 2～8 minutes, wherein mesh size is ∮ 2～∮ 6mm; The above-mentioned particulate material that crushes is dropped into the film-discharging machine slice, and wherein the slice temperature is controlled at 80～120 ℃, and the slice THICKNESS CONTROL is at 0.6～2.5mm;
(4) calendering, cutting: divide 3～4 sections calenderings with the magnetic sheet after the above-mentioned slice, every section presses down rate≤40%, wherein laminates with 3～8 layers magnetic sheet, and outer two layers of usefulness are improved magnetic sheet; Magnetic stripe after the calendering is cut, promptly get adhesive electric machine magnetic strip after the cutting.
As preferably, earlier magnetic and coupling agent are weighed up in proportion in the described step (1), drop into batch mixer and stir 5min, drop into auxiliary material again and continue to stir 3min.
As preferably, the roll spacing of described step (2) mill transfers to 0.8～1.0mm, and the compound after the above-mentioned stirring is dropped into the roller 4min that turns refining; Banburying pressure is 0.4～0.8Mpa during banburying, and the temperature of banburying is 90～110 ℃, and the banburying time is 25min.
As preferably, the pulverizing time is 3～5 minutes in the described step (3), and wherein mesh size is ∮ 2～∮ 4mm; Wherein the slice temperature is controlled at 90～110 ℃, and the slice THICKNESS CONTROL is at 0.8～2.0mm.
A kind of by the prepared adhesive electric machine magnetic strip of above-mentioned preparation method.
Therefore the present invention has the following advantages:
1, utilizes the adhesive electric machine magnetic strip of composition preparation of the present invention not only to satisfy miniature specific type of electric machine, and solved prior art because electrical micro-machine belongs to high-accuracy element to magnetic property, dimensional accuracy and conforming requirement.The surface can not have foreign material, uses talcum powder to prevent the inter-adhesive worthless problem of magnetic stripe problem.
2, it is simple to utilize preparation method of the present invention to prepare adhesive electric machine magnetic strip preparation technology, and operability can be saved great amount of manpower and material resources more by force.
Embodiment
Below by specific embodiment, technical scheme of the present invention is described in further detail; But the present invention is not limited to these embodiment.
Embodiment 1:
(1) batching: earlier magnetic and coupling agent are weighed up in proportion, drop into batch mixer and stirred 3 minutes, continue stirring 5 minutes after dropping into other auxiliary material again; The composition that wherein prepares internal layer magnetic sheet input is as shown in table 1; The outer two layers of composition that improves the magnetic sheet input of preparation are as shown in table 2.
(2) open refining, banburying: the roll spacing of mill is transferred to 0.5, the compound after the above-mentioned stirring is dropped into the roller 3min that turns refining; Stand-by after film evenly cuts, drop into banburying in the banbury, banburying pressure is 0.2Mpa, and the temperature of banburying is 70 ℃, and the banburying time is 30min;
(3) pulverizing, slice: the particulate material after the above-mentioned banburying is dropped into pulverizer pulverized 2 minutes, wherein mesh size is ∮ 6mm; The size of gained particle is 5mm; The above-mentioned particulate material that crushes is dropped into the film-discharging machine slice, and wherein the slice temperature is controlled at 80 ℃, and the slice THICKNESS CONTROL is at .5mm;
(4) calendering, cutting: divide 3 sections calenderings with the magnetic sheet after the above-mentioned slice, every section presses down rate≤40%, wherein laminates with 3 layers magnetic sheet, and outer two layers of usefulness are improved magnetic sheet; Magnetic stripe after the calendering is cut, promptly get adhesive electric machine magnetic strip after the cutting.
Detect, pack: the product that meets outward appearance, dimensional requirement is packed underproof removal the, packing warehouse-in.The performance of gained adhesive electric machine magnetic strip is listed in table 3.
Table 1: the composition of internal layer magnetic sheet
| Composition | Composition 1 | Composition 2 |
| Barium ferrite magnetic powder haloflex (CPE) dioctyl phthalate (DOP) DOTP (DOTP) zinc stearate calcium stearate titanate coupling agent silane coupler | 80％ 10％ 4％ 3％ 2％ 1％ | 86％ 9％ 2％ 0.5％ 0.5％ |
Table 2: the composition of outer two layers of magnetic sheet
| Composition | Composition 1 | Composition 2 |
| The barium ferrite magnetic powder haloflex, (CPE) PUR, (EVA) calcium stearate titanate coupling agent silane coupler | 80％ 10％ 6％ 2％ 1％ 1％ | 86％ 8％ 5％ 0.1％ 0.9％ |
Table 3: the performance of adhesive electric machine magnetic strip
| Performance Detection | Composition 1 | Composition 2 |
| The thermal expansion of hardness EC value density | 97A 3.22V 3.6 0.04mm | 97A 3.22V 3.6 0.04mm |
Embodiment 2
(1) batching: earlier magnetic and coupling agent are weighed up in proportion, drop into batch mixer and stirred 5 minutes, continue stirring 3 minutes after dropping into other auxiliary material again; The composition that wherein prepares internal layer magnetic sheet input is as shown in table 4; The outer two layers of composition that improves the magnetic sheet input of preparation are as shown in table 5.
(2) open refining, banburying: the roll spacing of mill is transferred to 0.9mm, the compound after the above-mentioned stirring is dropped into the roller 4min that turns refining; It is stand-by to cut the back after film is even, drops into banburying in the banbury, and banburying pressure is 0.6Mpa, and the temperature of banburying is 100 ℃, and the banburying time is 25min;
(3) pulverizing, slice: the particulate material after the above-mentioned banburying is dropped into pulverizer pulverized 4 minutes, wherein mesh size is ∮ 3mm; The size of gained particle is 2mm; The above-mentioned particulate material that crushes is dropped into the film-discharging machine slice, and wherein the slice temperature is controlled at 100 ℃, and the slice THICKNESS CONTROL is at .1.5mm;
(4) calendering, cutting: divide 4 sections calenderings with the magnetic sheet after the above-mentioned slice, every section presses down rate≤40% and wherein laminates with 6 layers magnetic sheet, and outer two layers of usefulness are improved magnetic sheet; Magnetic stripe after the calendering is cut, promptly get adhesive electric machine magnetic strip after the cutting.
Detect, pack: the product that meets outward appearance, dimensional requirement is packed underproof removal the, packing warehouse-in.The performance of gained adhesive electric machine magnetic strip is listed in table 6.
Table 4: the composition of internal layer magnetic sheet
| Composition | Composition 1 | Composition 2 |
| Strontium ferrite magnetic powder haloflex (CPE) dioctyl phthalate (DOP) DOTP (DOTP) zinc stearate calcium stearate titanate coupling agent silane coupler | 92％ 6％ 1％ 0.1％ 0.5％ 0.4％ | 88％ 7％ 2％ 0.5％ 0.5％ 1％ 1％ |
Table 5: the composition of outer two layers of magnetic sheet
| Composition | Composition 1 | Composition 2 |
| The strontium ferrite magnetic powder haloflex, (CPE) PUR, (EVA) calcium stearate titanate coupling agent silane coupler | 92％ 5％ 2％ 0.1％ 0.5％ 0.4％ | 88％ 8％ 3％ 0.5％ 0.5％ |
Table 6: the performance of adhesive electric machine magnetic strip
| Performance Detection | Composition 1 | Composition 2 |
| The thermal expansion of hardness EC value density | 98A 3.25V 3.7 0.03mm | 98A 3.25V 3.7 0.03mm |
Embodiment 3
(1) batching: earlier magnetic and coupling agent are weighed up in proportion, drop into batch mixer and stirred 10 minutes, continue stirring 2 minutes after dropping into other auxiliary material again; The composition that wherein prepares internal layer magnetic sheet input is as shown in table 7; The outer two layers of composition that improves the magnetic sheet input of preparation are as shown in table 8.
(2) open refining, banburying: the roll spacing of mill is transferred to 1.5mm, the compound after the above-mentioned stirring is dropped into the roller 6min that turns refining; It is stand-by to cut the back after film is even, drops into banburying in the banbury, and banburying pressure is 1.0Mpa, and the temperature of banburying is 130 ℃, and the banburying time is 15min;
(3) pulverizing, slice: the particulate material after the above-mentioned banburying is dropped into pulverizer pulverized 8 minutes, wherein mesh size is ∮ 2mm; The size of gained particle is 1mm; The above-mentioned particulate material that crushes is dropped into the film-discharging machine slice, and wherein the slice temperature is controlled at 120 ℃, and the slice THICKNESS CONTROL is at .0.6mm;
(4) calendering, cutting: divide 3 sections calenderings with the magnetic sheet after the above-mentioned slice, every section presses down rate≤40, wherein laminates with 8 layers magnetic sheet, and outer two layers of usefulness are improved magnetic sheet; Magnetic stripe after the calendering is cut, promptly get adhesive electric machine magnetic strip after the cutting.
Detect, pack: the product that meets outward appearance, dimensional requirement is packed underproof removal the, packing warehouse-in.The performance of gained adhesive electric machine magnetic strip is listed in table 9.
Table 7: the composition of internal layer magnetic sheet
| Composition | Composition 1 | Composition 2 |
| Strontium ferrite magnetic powder haloflex (CPE) dioctyl phthalate (DOP) DOTP (DOTP) zinc stearate calcium stearate titanate coupling agent silane coupler | 93％ 3％ 2％ 1％ 1％ | 95％ 2％ 0.1％ 0.1％ 2.8％ |
Table 8: the composition of outer two layers of magnetic sheet
| Composition | Composition 1 | Composition 2 |
| The strontium ferrite magnetic powder haloflex, (CPE) PUR, (EVA) calcium stearate titanate coupling agent silane coupler | 93％ 3％ 1％ 1％ 1％ 1％ | 95％ 2％ 1.5％ 2％ 0.5％ |
Table 9: the performance of adhesive electric machine magnetic strip
| Performance Detection | Composition 1 | Composition 2 |
| The thermal expansion of hardness EC value density | 99A 3.30V 3.8 0.02mm | 99A 3.30V 3.8 0.02mm |
Specific embodiment described in the present invention only is that the present invention's spirit is illustrated.The technical staff of the technical field of the invention can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although the present invention has been made detailed explanation and has quoted some instantiations as proof, to those skilled in the art, only otherwise leave that the spirit and scope of the present invention can be done various variations or correction is obvious.
Claims (16)
1. adhesive electric machine magnetic strip is characterized in that described adhesive electric machine magnetic strip prolongs by 3～8 layers to be pressed into:
Wherein said internal layer comprises by following percentage by weight composition:
Magnetic: 80%～95%; Polyethylene: 2～10%;
Plasticizer: 0～4% (not comprising 0); Stabilizer: 0～3% (not comprising 0);
Coupling agent 0.1～3%;
Described outer two layers comprise by following percentage by weight composition:
Magnetic: 80%～95%; Polyethylene: 2～10%;
Thermosol: 1%～6%; Stabilizer: 0～2% (not comprising 0);
Coupling agent: 0.1%～3%;
2. a kind of adhesive electric machine magnetic strip according to claim 1 is characterized in that described internal layer comprises by following percentage by weight composition:
Magnetic: 86%～92%; Polyethylene: 6～9%;
Plasticizer: 0～2% (not comprising 0); Stabilizer: 0～1% (not comprising 0);
Coupling agent 0.5～2%;
Described outer two layers comprise by following percentage by weight composition:
Magnetic: 86%～92%; Polyethylene: 5～8%;
Thermosol: 2%～5%; Stabilizer: 0～1% (not comprising 0);
Coupling agent: 0.5%～2%;
3, a kind of adhesive electric machine magnetic strip according to claim 1 and 2 is characterized in that described magnetic is a kind of in barium ferrite magnetic powder, the strontium ferrite magnetic powder.
4, a kind of adhesive electric machine magnetic strip according to claim 1 and 2 is characterized in that described polyethylene is a haloflex.
5, a kind of adhesive electric machine magnetic strip according to claim 1 and 2 is characterized in that described plasticizer is one or both in dioctyl phthalate or the DOTP.
6, a kind of adhesive electric machine magnetic strip according to claim 5 is characterized in that described plasticizer is a dioctyl phthalate.
7, a kind of adhesive electric machine magnetic strip according to claim 1 and 2 is characterized in that described stabilizer is a stearate.
8, a kind of adhesive electric machine magnetic strip according to claim 7 is characterized in that described stearate is calcium stearate [Ca (St)
2], zinc stearate [Zn (St)
2] in one or both, its China and foreign countries two layers of used stabilizer be calcium stearate [Ca (St)
2].
9, a kind of adhesive electric machine magnetic strip according to claim 1 and 2 is characterized in that described coupling agent is one or both in titanate coupling agent or the silane coupler.
10, a kind of adhesive electric machine magnetic strip according to claim 1 and 2 is characterized in that described PUR is an ethylene-vinyl acetate copolymer.
11, a kind of adhesive electric machine magnetic strip according to claim 1 and 2 is characterized in that described internal layer comprises by following percentage by weight composition epoxidized soybean oil 0～2% (not comprising 0).
12, a kind of preparation method of adhesive electric machine magnetic strip is characterized in that being made up of following steps:
(1) batching: earlier magnetic and coupling agent are weighed up in proportion, drop into batch mixer and stirred 3～10 minutes, continue stirring 2～5 minutes after dropping into other auxiliary material again; The auxiliary material that wherein prepare internal layer magnetic sheet input are polyethylene, plasticizer, stabilizer, epoxidized soybean oil; The outer two layers of auxiliary material that improves the magnetic sheet input of preparation are polyethylene, thermosol, stabilizer.
(2) open refining, banburying: the roll spacing of mill is transferred to 0.5～1.5mm, the compound after the above-mentioned stirring is dropped into the roller 3～6min that turns refining; Cut the back and drop into banburying in the banbury after film is even, banburying pressure is 0.2～1.0Mpa, and the temperature of banburying is 70～130 ℃, and the banburying time is 15～30min;
(3) pulverizing, slice: the particulate material after the above-mentioned banburying is dropped into pulverizer pulverized 2～8 minutes, wherein mesh size is ∮ 2～∮ 6mm; The above-mentioned particulate material that crushes is dropped into the film-discharging machine slice, and wherein the slice temperature is controlled at 80～120 ℃, and the slice THICKNESS CONTROL is at 0.6～2.5mm;
(4) calendering, cutting: divide 3～4 sections calenderings with the magnetic sheet after the above-mentioned slice, per pass presses down rate≤40%, wherein laminates with 3～8 layers magnetic sheet, and outer two layers of usefulness are improved magnetic sheet; Magnetic stripe after the calendering is cut, promptly get adhesive electric machine magnetic strip after the cutting.
13, the preparation method of a kind of adhesive electric machine magnetic strip according to claim 12 is characterized in that earlier magnetic and coupling agent being weighed up in proportion in the described step (1), drops into batch mixer and stirs 5min, drops into auxiliary material again and continues to stir 3min.
14, according to the preparation method of claim 12 or 13 described a kind of adhesive electric machine magnetic strips, it is characterized in that the roll spacing of described step (2) mill transfers to 0.8～1.0mm, the compound after the above-mentioned stirring is dropped into the roller 4min that turns refining; Banburying pressure is 0.4～0.8Mpa during banburying, and the temperature of banburying is 90～110 ℃, and the banburying time is 25min.
15. according to the preparation method of claim 12 or 13 described a kind of adhesive electric machine magnetic strips, it is characterized in that the pulverizing time is 3～5 minutes in the described step (3), wherein mesh size is ∮ 2～∮ 4mm; Wherein the slice temperature is controlled at 90～110 ℃, and the slice THICKNESS CONTROL is at 0.8～2.0mm.
16, a kind of as the prepared adhesive electric machine magnetic strip of claim 12.
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| CN103580302A (en) * | 2013-08-30 | 2014-02-12 | 浙江省东阳市诚基电机有限公司 | Halogen-free motor magnetic strip and preparation method thereof |
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| CN104134506A (en) * | 2014-07-07 | 2014-11-05 | 东莞市美厚塑磁有限公司 | Oil-resistant and temperature-resistant bonding permanent magnetic ferrite material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57153407A (en) * | 1981-03-18 | 1982-09-22 | Showa Denko Kk | Chlorinated polyethylene composition |
| CN1103988A (en) * | 1993-12-15 | 1995-06-21 | 北京矿冶研究总院 | Method for manufacturing bonded permanent magnet material by magnetic orientation extrusion molding |
| US20050064242A1 (en) * | 1999-11-08 | 2005-03-24 | Schneider Jon B. | Magnetic layer with high permeability backing |
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2006
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