CN1050030A - Technology of production of magnetic rubber - Google Patents
Technology of production of magnetic rubber Download PDFInfo
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- CN1050030A CN1050030A CN 90103488 CN90103488A CN1050030A CN 1050030 A CN1050030 A CN 1050030A CN 90103488 CN90103488 CN 90103488 CN 90103488 A CN90103488 A CN 90103488A CN 1050030 A CN1050030 A CN 1050030A
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- magnetic
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Abstract
A kind of technology of production of magnetic rubber is characterized in that earlier natural rubber, magnetic and vulcanizing ingredient being added to that to carry out magnetic aligning in the rubber mixing machine mixing, then is compressing tablet, sulfuration, and re-shearing tensile deformation is cutting or impact briquetting then, magnetizes, and obtains product at last.With product magnetic property height, gentle good springiness that this technology is made, other physicals is also good than the magnetic rubber that ordinary process is made, and production process can be saved a large amount of energy.
Description
The invention belongs to the manufacturing process that has both magnetic and gentle elastic bonding class permanent magnet material, particularly magnetic rubber.
Magnetic rubber is widely used in machinery, electronics, medical treatment, mine, the top science with the gentle elasticity and the plasticity-of uniqueness, so that all respects such as articles for daily use have been filled up the field that the rigidity magnet can't set foot in, its requirement is increasing.Make at present magnetic rubber and adopt extrusion molding usually, general technical process is: rubber and magnetic be mixing-and extrusion moulding-vulcanize-magnetize.By the magnetic rubber that this technology is made, generally be isotropic magneticsubstance, weak point such as the magnetic property of goods is low, but also exists the energy consumption height, and equipment loss is big.
The objective of the invention is to set up a kind of novel process, use common equipment and simple technology to produce the magnetic rubber goods of the gentle anisotropic material that elasticity is easily adjusted, magnetic property is high.
At first technical process of the present invention is described below:
Technical process of the present invention as shown in Figure 1.
It is mixing that natural rubber, magnetic and vulcanizing ingredient are carried out magnetic aligning, the compound film of desired thickness is made in mixing even back with rolling press, putting into vulcanizing boiler then vulcanizes, carry out the finish rolling sheet material that desired thickness is made in the shear tension distortion after going out jar, preferably, magnetize and promptly obtain desired finished product through cutting or impact briquetting.
The principal character of this technical process is to adopt mixing magnetic aligning technology and sulfuration back shear tension.By traditional technology, the magnetic aligning technology is carried out mixing after, its objective is that the magnetic powder particles that makes in the compound arranges along same direction under the magnetic field force effect, and the easy magnetization vector is promptly along the direction of use magnetic, and is fixed up.Adopt and carry out magnetic aligning again after mixing, the viscosity of rubber increases, make magnetic-particle rotated by magneticaction and must apply bigger magnetic field force, so, when producing the anisotropic bond magneticsubstance by traditional technology, the magneticstrength of alignment magnetic field will be up to more than 10,000 oersteds, and energy expenditure is bigger.Difference of the present invention is to adopt one side mixing, adding magnetic on one side also is orientated immediately, because sneaking into still to be in before the binding agent, magnetic is about to the magnetic rotational alignment under the dispersion state, and utilize the clinging power of binding agent that acquired orientation is fixed up, not only orientation effect can be obviously improved, but also the magnetic aligning energy needed can be obviously saved.In order to reach this purpose, the present invention has designed a magnetic aligning device on original opening rubber mixing machine, and this device is drawn in Figure of description.
Below the magnetic aligning device of Figure of description is described:
Fig. 1 is the front view of magnetic aligning device; Fig. 2 is the side-view of this device.
(1) is scraper bowl among the figure, its available aluminum, also available plastics and other material are made, (2) be the strontium ferrite permanent magnet piece, its upper end is the S utmost point, the lower end is the N utmost point, (3) be batten, the below of magnetic patch (2) sticks together with binding agent and batten, batten directly just is placed on the support of rubber mixing machine and cylinder top, during operation magnetic is put into scraper bowl (1), inclination scraper bowl when mixing process, slowly magnetic is poured on the rubber and vulcanizing ingredient between the cylinder, makes magnetic mixing with it evenly.
The prescription of various materials was as follows when the present invention was mixing: (% by weight)
Natural rubber 8-17%; Sulfuration reward mixture 1-4%; Zinc oxide 2-6%, all the other are strontium ferrite magnetic powder.
Shear tension also is characteristics of the present invention after the sulfuration, by traditional magnetic rubber manufacture craft, is to add the mixing rear extrusion molding of magnetic or calendering formation, vulcanizes again, just fills at last Magnetic, the product that this technology the is made poor flexibility that softens, bending radius is big, is generally more than the 10mm, and some product can't bear a folding. And the present invention takes to vulcanize the step of rear shear tension, can make the rubber of originally inserting excessive magnetic and the bigger phenomenon of the fragility that seems disappears. We think to vulcanize rear shear tension its reason, have destroyed the sulfide linkage at some position, have further strengthened connecting of magnetic powder particle and binding agent, and the flexibility of product increased greatly.
The present invention vulcanizes rear available milling train and carries out shear tension, can make then adhesive tape, the film of various shapes with cut out, punching press etc., magnetizes at last and namely obtains the finished product of various uses.
Below be one embodiment of the present of invention:
Natural rubber with 10%, 85% strontium ferrite magnetic powder, 2% vulcanizing ingredient, 3% zinc oxide are added to mixing roll and carry out mixing, earlier rubber and vulcanizing ingredient are mixed when mixing, progressively add magnetic then, magnetic is to be placed in the magnetic aligning device of Figure of description in the scraper bowl, slowly pours in the compound again, pouring into to rubber in the process of magnetic, whole device lies on the support of rubber mixing machine cylinder top, finishes up to adding powder, and the condition control of mixing process is with common mixing identical.The mixing uniform mixing material that obtains rolls into the sheet rubber of different thickness according to the product design needs, after delivering in the vulcanization process sulfuration, carry out shear tension with milling train, making its deflection is 5-40%, promptly obtain semifinished sheet after shearing strain, sheet material can be with the goods of cutting out, method such as punching press is made desired shape.With the magnetic rubber material that above-mentioned technology is made, to measure through relevant department, magnetic energy product reaches 0.6MG
SO
e, tensile strength 25Kg/Cm
2, bending radius is 2-5mm, and it is on probation for Liuzhou city freezer factory to do a collection of rubber magnetic stripe in 1989, and Xiang Jun such as profile, magnetic induction density, surface hardness, tensile strength, minimum bending radius, torsion test reach the quality inspection requirement of freezer factory.
Advantage of the present invention is that technological process and production equipment are simple, save the energy, the gentle elasticity of product, magnetic property and other physical property also are better than the product of common process greatly, in addition, this technology can be utilized the pressing under magnetic field piece car leftover bits and pieces of Sr-ferrite magnetic material manufacturer, raw material sources are abundant, low price.
Claims (5)
1, a kind of manufacturing process of magnetic rubber, step such as comprise mixing, extrusion moulding, vulcanize and magnetize, it is characterized in that: rubber, magnetic, vulcanizing ingredient are placed on earlier that to carry out magnetic aligning in the rubber mixing machine mixing, be rolling out film, sulfuration then, carry out the shear tension distortion again, cut out or punching press, magnetizing at last obtains product.
2, manufacturing process according to claim 1, it is characterized in that magnetic aligning mixing be on rubber mixing machine, to set up a magnetic aligning device, this covering device is made of scraper bowl (1), ferrite permanent-magnet piece (2), batten (3), and complete assembly is placed on the support of cylinder top of rubber mixing machine.
3, manufacturing process according to claim 1 is characterized in that consist of (the weight %) of each material when magnetic aligning is mixing, rubber (8-17%), and vulcanizing ingredient (1-4) %, zinc oxide (2-6) %, all the other are strontium ferrite magnetic powder.
4, manufacturing process according to claim 1 is characterized in that earlier rubber and vulcanizing ingredient being mixed when magnetic aligning is mixing, adds magnetic by scraper bowl (1) gradually at mixing process then.
5, manufacturing process according to claim 1, the shear tension distortion after it is characterized in that vulcanizing is carried out on milling train.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90103488 CN1050030A (en) | 1990-07-07 | 1990-07-07 | Technology of production of magnetic rubber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90103488 CN1050030A (en) | 1990-07-07 | 1990-07-07 | Technology of production of magnetic rubber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1050030A true CN1050030A (en) | 1991-03-20 |
Family
ID=4878100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90103488 Pending CN1050030A (en) | 1990-07-07 | 1990-07-07 | Technology of production of magnetic rubber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1050030A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101885868A (en) * | 2010-07-16 | 2010-11-17 | 扬州大学 | Method for preparing magnetic rubber from recovered rubber powder |
| CN101913855A (en) * | 2010-08-24 | 2010-12-15 | 中北大学 | Preparation method of iron strontium oxide magnetic nanoparticles and magnetic damping rubber thereof |
| CN104893048A (en) * | 2015-05-28 | 2015-09-09 | 安徽同丰橡塑工业有限公司 | Preparation process for magnetic chlorinated rubber |
-
1990
- 1990-07-07 CN CN 90103488 patent/CN1050030A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101885868A (en) * | 2010-07-16 | 2010-11-17 | 扬州大学 | Method for preparing magnetic rubber from recovered rubber powder |
| CN101913855A (en) * | 2010-08-24 | 2010-12-15 | 中北大学 | Preparation method of iron strontium oxide magnetic nanoparticles and magnetic damping rubber thereof |
| CN101913855B (en) * | 2010-08-24 | 2011-11-16 | 中北大学 | Preparation method of iron strontium oxide magnetic nanoparticles and magnetic damping rubber thereof |
| CN104893048A (en) * | 2015-05-28 | 2015-09-09 | 安徽同丰橡塑工业有限公司 | Preparation process for magnetic chlorinated rubber |
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| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |