CN103409086A - Bond made from halogen-free sheet soft magnetic material, preparation method thereof and halogen-free soft magnetic sheet - Google Patents
Bond made from halogen-free sheet soft magnetic material, preparation method thereof and halogen-free soft magnetic sheet Download PDFInfo
- Publication number
- CN103409086A CN103409086A CN201310379408XA CN201310379408A CN103409086A CN 103409086 A CN103409086 A CN 103409086A CN 201310379408X A CN201310379408X A CN 201310379408XA CN 201310379408 A CN201310379408 A CN 201310379408A CN 103409086 A CN103409086 A CN 103409086A
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- China
- Prior art keywords
- halogen
- sheet
- caking agent
- magnetic material
- soft magnetic
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
- B29C48/08—Flat, e.g. panels flexible, e.g. films
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
Abstract
The invention provides a bond made from a halogen-free sheet soft magnetic material, a preparation method thereof and a halogen-free soft magnetic sheet. The bond comprises the following components in percentage by weight: 5-30wt% of polyethylene, 70-95wt% of polyolefin copolymers as well as 0.1-2.0wt% of crosslinking agent and 0.1-1.0wt% of antioxygen. The preparation method of the bond comprises the following steps of: 1) adding the components in proportion into a mixer and uniformly mixing; 2) in an intermeshing co-rotating twin screw set, extruding an infused bar by virtue of a melt extrusion reaction grafting technology; 3) cooling with cooling water at a normal temperature, and then slicing and drying to obtain polyolefin elastomer bond particles. The halogen-free soft magnetic sheet provided by the invention is prepared through the following steps: physically mixing 5-12wt% of the polyolefin elastomer bond, 84-92wt% of neodymium iron boron magnetic powder or ferrite magnetic powder, 0.2-3wt% of non-orthophthalic plasticizer and 0.1-3wt% of titanate coupler; banburying, crushing, screening, rolling, polishing by virtue of UV (Ultraviolet), magnetizing and tailoring to prepare the environmentally-friendly halogen-free soft magnetic sheet which conforms to the requirements on environmentally-friendly ROHs (Restriction of the use of certain Hazardous Substances) regulations.
Description
Technical field
The present invention relates to a kind of Halogen sheet-form soft-magnetic material caking agent, preparation method and Halogen diskette, belong to field of magnetic material.
Background technology
At present, the sheet-form soft-magnetic material caking agent mainly adopts chlorinatedpolyethylene (CPE), and Halogen does not meet environmental protection ROHs laws and regulations requirement.CN101981152A introduces hot melt adhesive as adhesive composite, adhesive sheet and bonding forming product.It is characterized in that, it contains the mixture of hot-melt adhesive and kicker magnet, more than the shearing force 20N after heating (150 ℃, 10 minutes) is bonding.Wherein, hot-melt adhesive is bonding dose of the hot melt adhesive of polyester resin or polyolefins, has enumerated propylene～ethene～butylene～1 multipolymer, ethene～acetate ethylene copolymer as the polyolefins hot-melt adhesive.The problem of its existence is that hot-melt adhesive and magnetic mixing moulding are processed in the magnetic sheet process, and magnetic is difficult to by 10～40 mesh sieve choosings, and magnetic sheet surface magnetic force too low (more than 20mT).Be only suitable for the bonding of surface of automobile part.CN101536121A introduces coating method and makes the laminated sheet-form soft-magnetic material of making of a plurality of thin solidified nature diskettes.Sheet-form soft-magnetic material is formed by the soft magnetism composition, and this soft magnetism composition forms flat at least soft magnetic powder, acrylic rubber, epoxy resin, hardener for epoxy resin, solvent.The problem of its existence is that the caking agent of diskette is two component response types, needs solvent cut; Next is that diskette is heat cured, can not reclaim Reusability, and the feature of environmental protection is poor.CN101866733A introduces a kind of elastic adhesive type neodymium-iron-boron magnetic material and manufacture method, and its caking agent is at least a in CPE plastics, PE plastics, NBR rubber.The problem of its existence is CPE plastics Halogens, and NBR rubber needs sulfuration process, does not all meet environmental protection ROHs laws and regulations requirement; PE filling plastic magnetic amount is low, and the magnetic property of diskette is low; Magnetic is neodymium iron boron, and price is high.
Summary of the invention
The purpose of this invention is to provide a kind of Halogen sheet-form soft-magnetic material caking agent, preparation method and Halogen diskette, solved the Halogen problem of sheet-form soft-magnetic material caking agent, meet environmental protection ROHs laws and regulations requirement.
Technical scheme of the present invention: a kind of Halogen sheet-form soft-magnetic material caking agent of the present invention, material component and proportioning are:
Polyethylene 5～30wt.%, polyolefin copolymer 70～95wt.%, separately add linking agent 0.1～2.0wt.%, oxidation inhibitor 0.1～1.0wt.%.
Preferably, described polyethylene 5～25wt.%, polyolefin copolymer 72～90wt.%, separately add linking agent 0.2～1.0wt.%, oxidation inhibitor 0.1～0.5wt.%.
Preferably, polyethylene is high density polyethylene(HDPE), Low Density Polyethylene, linear low density polyethylene.
Preferably, described polyolefin copolymer is a kind of in the multipolymer, ethylene-vinyl acetate copolymer of ethylene-propylene copolymer, ethylene-octene or two kinds.
Preferably, described linking agent is a kind of in dibenzoyl peroxide, dilauroyl peroxide, dicumyl peroxide, di-t-butyl peroxide hexane.
Preferably, described oxidation inhibitor be 1010,1076,1135, a kind of in BHT oxidation inhibitor.
The preparation method of Halogen sheet-form soft-magnetic material caking agent of the present invention, step is as follows:
1) described component is joined in mixing machine and mixes in proportion;
2) in the parallel dual-screw extruding machine group, adopt and melt extrude the reactive grafting technology, extrude the melting tie rod;
3) under the normal temperature water quench, then obtain polyolefin elastomer caking agent particle through pelletizing, drying process.
Preferably, the screw cylinder temperature of described parallel dual-screw extruding machine is arranged on 135～160 ℃, 150～160 ℃ of melt temperatures.
A kind of Halogen diskette of the present invention, by described polyolefin elastomer caking agent 5～12wt.%, NdFeB magnetic powder or ferromagnetic oxide powder 84～92wt.%, non-adjacent benzene class softening agent 0.2～3wt.%, titanate coupling agent 0.1～3wt.% physical mixed, through banburying, fragmentation, screening, calendering, UV glazing, magnetize, cutting process prepares the environment-protective halogen-free diskette.
Described Halogen diskette, banburying in Banbury mixer, the cooking starch cool to room temperature of banburying, through crusher in crushing, 10～40 orders sieve; The powder that sieves synchronously rolls calendering on unit at two rollers and in flakes, rolls magnetic sheet thickness 0.2～1.0mm, magnetic sheet tensile strength 5～7Mpa, elongation 100～200%.
Advantage of the present invention: the present invention adopts and melt extrudes the reactive grafting technology, the grafted polyethylene molecule is as the long-chain tie molecule on the polyolefin copolymer molecule, obtain the polyolefin elastomer caking agent, with NdFeB magnetic powder or iron oxygen magnetic, mix, through banburying, fragmentation, screening, calendering, UV glazing, the technique such as magnetize, prepare the Halogen diskette, realize the non-halogen of diskette, met the environmental regulation requirement; Having solved ethene～octene copolymer, PE plastic adhesive, to coat the magnetic loading level low, causes the low problem of magnetic property of diskette.It is high that caking agent of the present invention coats the magnetic loading level, and the magnetic of diskette is strong, and [Br is 150mT, and Hcj is 190kA/m, and (BH) max reaches 5kJ/m
3].
In addition, ethene～acetate ethylene copolymer and ethene～the propylene copolymer caking agent mixes with magnetic, after banburying, magnetic easily bonding, become bulk, through crushing process, most of magnetic is difficult to also obtain fine solution by problems such as 40 mesh sieve choosings.The mechanical property of Halogen diskette prepared by the present invention is good, and magnetic property is strong, has economic benefit and social benefit preferably, has a extensive future.
Embodiment
Material component and the proportioning of a kind of Halogen sheet-form soft-magnetic material caking agent of the present invention are:
Polyethylene 5～30wt.%, polyolefin copolymer 70～95wt.%, separately add linking agent 0.1～2.0wt.%, oxidation inhibitor 0.1～1.0wt.%.
Preferred material forms and proportioning is: polyethylene 5～25wt.%, polyolefin copolymer 72～90wt.% separately add linking agent 0.2～1.0wt.%, oxidation inhibitor 0.1～0.5wt.%.
Described polyethylene is high density polyethylene(HDPE), Low Density Polyethylene, linear low density polyethylene.
Described polyolefin copolymer is a kind of in the multipolymer, ethylene-vinyl acetate copolymer of ethylene-propylene copolymer, ethylene-octene or two kinds.
Described linking agent is a kind of in dibenzoyl peroxide, dilauroyl peroxide, dicumyl peroxide, di-t-butyl peroxide hexane.
Described oxidation inhibitor is 1010,1076,1135, a kind of in BHT oxidation inhibitor.
Preparation method's step of Halogen sheet-form soft-magnetic material caking agent of the present invention is as follows:
1) described component is joined in mixing machine and mixes in proportion;
2) in the parallel dual-screw extruding machine group, adopt and melt extrude the reactive grafting technology, extrude the melting tie rod;
3) under the normal temperature water quench, then obtain polyolefin elastomer caking agent particle through pelletizing, drying process.
In described screw cylinder temperature, arrange 135 ℃～160 ℃, 150～160 ℃ of melt temperatures.
The polyolefin elastomer caking agent has environmental protection, and cost is low, and the characteristics that the magnetic loading level is large can substitute traditional chlorinatedpolyethylene caking agent fully, and processing units and complete processing do not need to adjust substantially.
A kind of Halogen diskette of the present invention adopts polyolefin elastomer caking agent of the present invention 5～12wt.%, NdFeB magnetic powder or ferromagnetic oxide powder 84～92wt.%, non-adjacent benzene class softening agent 0.2～3wt.%, titanate coupling agent 0.1～3wt.% physical mixed, through banburying, fragmentation, screening, calendering, UV glazing, magnetize, cutting process prepares the Halogen diskette.
Banburying is 35 minutes in Banbury mixer, and the banburying temperature is controlled at 110～140 ℃, the cooking starch cool to room temperature of banburying, and through crusher in crushing, 10～40 orders sieve.The powder that sieves synchronously rolls on unit and rolls in flakes at two rollers, and two roll-ins are prolonged temperature and controlled 95～110 ℃.Through UV glazing, energising, magnetize, cut again, obtain the Halogen diskette, magnetic sheet thickness 0.2～1.0mm, magnetic sheet tensile strength 5～7MPa.Elongation 100～200%.[Br is 150mT to the magnetic property of diskette, and Hcj is 190kA/m, and (BH) max reaches 5kJ/m
3].
Polyolefin elastomer caking agent embodiment such as following table:
Illustrate: 1, bonded magnetic powder effect assessment: 10 gram polyolefin elastomer caking agents can coat the maximum weight of NdFeB magnetic powder or ferromagnetic oxide powder.2, the composition of diskette: 10wt.% polyolefin elastomer caking agent/90wt.% NdFeB magnetic powder or ferromagnetic oxide powder; The Mechanics Performance Testing condition: 22 ± 1 ℃, rate of extension 50mm/ minute.
Magnetic property embodiment such as the following table of Halogen diskette:
Core of the present invention is to adopt to melt extrude the reactive grafting technology, the grafted polyethylene molecule is as the long-chain tie molecule on the polyolefin copolymer molecule, obtain the polyolefin elastomer caking agent, with NdFeB magnetic powder or iron oxygen magnetic, mix, through banburying, fragmentation, screening, calendering, UV glazing, the technique such as magnetize, prepare the Halogen diskette, realized the non-halogen of diskette.Therefore; every employing melt extrudes the reactive grafting technology; the grafted polyethylene molecule is as the long-chain tie molecule on the polyolefin copolymer molecule, obtains the polyolefin elastomer caking agent and utilizes this caking agent to prepare the Halogen diskette, all belongs to protection scope of the present invention.
Claims (10)
1. Halogen sheet-form soft-magnetic material caking agent, material component and proportioning are:
Polyethylene 5～30wt.%, polyolefin copolymer 70～95wt.%, separately add linking agent 0.1～2.0wt.%, oxidation inhibitor 0.1～1.0wt.%.
2. Halogen sheet-form soft-magnetic material caking agent according to claim 1 is characterized in that: material forms and proportioning is: polyethylene 5～25wt.%, polyolefin copolymer 72～90wt.% separately add linking agent 0.2～1.0wt.%, oxidation inhibitor 0.1～0.5wt.%.
3. Halogen sheet-form soft-magnetic material caking agent according to claim 1 and 2, it is characterized in that: polyethylene is high density polyethylene(HDPE), Low Density Polyethylene, linear low density polyethylene.
4. Halogen sheet-form soft-magnetic material caking agent according to claim 1 and 2 is characterized in that: polyolefin copolymer is a kind of in the multipolymer, ethylene-vinyl acetate copolymer of ethylene-propylene copolymer, ethylene-octene or two kinds.
5. Halogen sheet-form soft-magnetic material caking agent according to claim 1 and 2 is characterized in that: linking agent is a kind of in dibenzoyl peroxide, dilauroyl peroxide, dicumyl peroxide, di-t-butyl peroxide hexane.
6. Halogen sheet-form soft-magnetic material caking agent according to claim 1 and 2 is characterized in that: oxidation inhibitor is 1010,1076,1135, a kind of in BHT oxidation inhibitor.
7. the preparation method of the described Halogen sheet-form soft-magnetic material of one of claim 1～6 caking agent, step is as follows:
1) described component is joined in mixing machine and mixes in proportion;
2) in the parallel dual-screw extruding machine group, adopt and melt extrude the reactive grafting technology, extrude the melting tie rod;
3) under the normal temperature water quench, then obtain polyolefin elastomer caking agent particle through pelletizing, drying process.
8. the preparation method of Halogen sheet-form soft-magnetic material caking agent according to claim 7, it is characterized in that: the screw cylinder temperature of described parallel dual-screw extruding machine is arranged on 135～160 ℃, 150～160 ℃ of melt temperatures.
9. Halogen diskette, by the described polyolefin elastomer caking agent of one of claim 1～6 5～12wt.%, NdFeB magnetic powder or ferromagnetic oxide powder 84～92wt.%, non-adjacent benzene class softening agent 0.2～3wt.%, titanate coupling agent 0.1～3wt.% physical mixed, through banburying, fragmentation, screening, calendering, UV glazing, magnetize, cutting process prepares the environment-protective halogen-free diskette.
10. Halogen diskette according to claim 9 is characterized in that: banburying in Banbury mixer, and the cooking starch cool to room temperature of banburying, through crusher in crushing, 10～40 orders sieve; The powder that sieves synchronously rolls calendering on unit at two rollers and in flakes, rolls magnetic sheet thickness 0.2～1.0mm, magnetic sheet tensile strength 5～7Mpa, elongation 100～200%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310379408.XA CN103409086B (en) | 2013-08-27 | 2013-08-27 | Halogen sheet-form soft-magnetic material caking agent, preparation method and Halogen diskette |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310379408.XA CN103409086B (en) | 2013-08-27 | 2013-08-27 | Halogen sheet-form soft-magnetic material caking agent, preparation method and Halogen diskette |
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| Publication Number | Publication Date |
|---|---|
| CN103409086A true CN103409086A (en) | 2013-11-27 |
| CN103409086B CN103409086B (en) | 2015-10-28 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58183740A (en) * | 1982-04-21 | 1983-10-27 | Tatsuta Electric Wire & Cable Co Ltd | Composition for heat-resistant self-welding crosslinked polyolefin tape |
| CN101981152A (en) * | 2008-03-27 | 2011-02-23 | 琳得科株式会社 | Adhesive composition, adhesive sheet, and adhesive molded product |
| CN102585731A (en) * | 2011-12-28 | 2012-07-18 | 广州鹿山新材料股份有限公司 | Novel polyolefin packaging glue film composite and application thereof |
| CN102832002A (en) * | 2012-09-13 | 2012-12-19 | 北矿磁材科技股份有限公司 | Environment-friendly halogen-free rare-earth composite magnetic material |
-
2013
- 2013-08-27 CN CN201310379408.XA patent/CN103409086B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58183740A (en) * | 1982-04-21 | 1983-10-27 | Tatsuta Electric Wire & Cable Co Ltd | Composition for heat-resistant self-welding crosslinked polyolefin tape |
| CN101981152A (en) * | 2008-03-27 | 2011-02-23 | 琳得科株式会社 | Adhesive composition, adhesive sheet, and adhesive molded product |
| CN102585731A (en) * | 2011-12-28 | 2012-07-18 | 广州鹿山新材料股份有限公司 | Novel polyolefin packaging glue film composite and application thereof |
| CN102832002A (en) * | 2012-09-13 | 2012-12-19 | 北矿磁材科技股份有限公司 | Environment-friendly halogen-free rare-earth composite magnetic material |
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| CN103409086B (en) | 2015-10-28 |
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Granted publication date: 20151028 Termination date: 20170827 |