CN113001840A - Device and method for synchronously pre-structuring and vulcanizing magnetorheological elastomer - Google Patents
Device and method for synchronously pre-structuring and vulcanizing magnetorheological elastomer Download PDFInfo
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- CN113001840A CN113001840A CN202110295985.5A CN202110295985A CN113001840A CN 113001840 A CN113001840 A CN 113001840A CN 202110295985 A CN202110295985 A CN 202110295985A CN 113001840 A CN113001840 A CN 113001840A
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- mre
- ferromagnetic
- structuring
- heating plate
- magnetic field
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 25
- 239000000806 elastomer Substances 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000005294 ferromagnetic effect Effects 0.000 claims abstract description 56
- 230000005291 magnetic effect Effects 0.000 claims abstract description 52
- 238000004073 vulcanization Methods 0.000 claims abstract description 13
- 239000011159 matrix material Substances 0.000 claims abstract description 11
- 230000001360 synchronised effect Effects 0.000 claims abstract description 9
- 238000012545 processing Methods 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims description 36
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 34
- 239000000463 material Substances 0.000 claims description 16
- 230000005284 excitation Effects 0.000 claims description 15
- 230000008859 change Effects 0.000 claims description 4
- 239000003302 ferromagnetic material Substances 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 230000035699 permeability Effects 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 abstract description 10
- 239000002245 particle Substances 0.000 abstract description 8
- 230000008569 process Effects 0.000 description 6
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000013040 rubber vulcanization Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005987 sulfurization reaction Methods 0.000 description 1
Images
Classifications
-
- 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
- B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
-
- 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
-
- 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/0288—Controlling heating or curing of polymers during moulding, e.g. by measuring temperatures or properties of the polymer and regulating the process
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Thermal Sciences (AREA)
- Electromagnetism (AREA)
- Toxicology (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
Abstract
The invention discloses a pre-structuring and vulcanizing synchronous processing device for a magnetorheological elastomer, which comprises a closable magnetic circuit, a magnetic field control system and a temperature controller. Meanwhile, a method for synchronously processing the pre-structuring and vulcanization of the magnetorheological elastomer is disclosed. The device and the method for synchronously pre-structuring and vulcanizing the magnetorheological elastomer are simple and practical, and the ferromagnetic particles are orderly arranged when the MRE colloidal matrix is in a liquefied state, so that the resistance of the ferromagnetic particles in the MRE colloidal matrix in the ordered arrangement in a magnetic field is greatly reduced, and the orderly arranged structural body formed in the MRE is increased, thereby improving the magnetorheological performance of the MRE, simplifying the preparation process of the MRE and reducing the preparation time of the MRE.
Description
Technical Field
The invention relates to the technical field of magnetorheological elastomers (MRE), in particular to a device and a method for synchronously pre-structuring and vulcanizing a magnetorheological elastomer.
Background
The pre-structuring process and the curing process of the magnetorheological elastomer (MRE) are two important processes in the preparation of the magnetorheological elastomer material. The MRE pre-structuring is to change the ferromagnetic particles in the raw material (namely the product after the ferromagnetic particles and a rubber matrix and the like are mixed) from a disordered arrangement state to an ordered arrangement state in a magnetic field; MRE vulcanization is the curing of a pre-structured raw stock into MRE product by heating and pressurizing it in a rubber vulcanization machine. Currently, the MRE pre-structuring process and MRE sulfurization process are performed separately, sequentially and in steps. In the implementation method, the ferromagnetic particles are rearranged and arranged in an ordered state in a rubber matrix in a solid state in the pre-structuring process, the ferromagnetic particles bear great resistance in arrangement, the formed ordered arrangement bodies are few, and the magnetic field strength is fixed by adopting the existing MRE pre-structuring device (patent number: ZL 201420113932.2), cannot be adjusted and changed, and cannot be suitable for pre-structuring treatment under different magnetic field strength requirements; and the vulcanization is carried out without magnetic field in the vulcanization process, at the moment, after the pre-structured raw material is heated and liquefied, a part of orderly arranged bodies can be changed into disordered arrangement again, and the orderly arranged bodies are further reduced, so that the magneto-rheological property of MRE is reduced.
The magneto-rheological property of MRE is the most important property of MRE, and completely influences the practicability of MRE. However, there is no method for improving the magnetorheological performance of MRE in the MRE preparation process in the research and practical use of MRE.
Disclosure of Invention
The invention aims to: provides a device and a method for synchronously pre-structuring and vulcanizing a magnetorheological elastomer to solve the defects.
In order to achieve the above purpose, the invention provides the following technical scheme:
a pre-structured and vulcanized synchronous processing device for a magnetorheological elastomer comprises a closable magnetic circuit, a magnetic field control system and a temperature controller.
Preferably, the closable magnetic circuit is composed of a base iron core, a column iron core, an upper beam iron core, a movable iron core, a ferromagnetic MRE mold, a ferromagnetic upper heating plate and a ferromagnetic lower heating plate.
Preferably, the movable iron core controls the opening or closing of the magnetic circuit by moving up and down.
Preferably, the magnetic field control system is composed of an excitation coil, a direct current controller and a field intensity meter, wherein the direct current controller adjusts the intensity of the magnetic field generated by the excitation coil through controlling the excitation current.
Preferably, the ferromagnetic upper heating plate, the ferromagnetic lower heating plate, the movable iron core and the temperature controller form a vulcanization heating pressurization system.
Preferably, the ferromagnetic MRE die, the ferromagnetic upper heating plate, and the ferromagnetic lower heating plate are all made of ferromagnetic material to increase their magnetic permeability.
Preferably, a field intensity sensor is arranged in the field intensity meter, the field intensity sensor is fixed below the movable iron core, and the field intensity meter is used for monitoring the size and the change of a magnetic field in the magnetic circuit.
Preferably, the method for synchronously pre-structuring and vulcanizing the magnetorheological elastomer comprises the following steps:
(1) placing the ferromagnetic MRE mould containing the MRE material below the movable iron core, and moving the movable iron core downwards to close the magnetic circuit;
(2) adjusting a temperature controller to enable the ferromagnetic upper heating plate and the ferromagnetic lower heating plate to generate heat, heating the ferromagnetic MRE mold, gradually softening the colloidal matrix of the MRE material to a fluid state, keeping the temperature stable to vulcanize the MRE material, and keeping the movable iron core acting on the ferromagnetic upper heating plate all the time;
(3) gradually adjusting the exciting current of the exciting circuit through a direct current controller until the required magnetic field intensity is reached, and keeping the magnetic field intensity until the final vulcanization process, and performing pre-structuring treatment on the MRE material;
(4) after the MRE material is insulated and vulcanized, adjusting a temperature controller to gradually reduce the temperature, simultaneously reducing an excitation circuit until the temperature is zero, and removing an excitation magnetic field;
(5) and when the ferromagnetic MRE mould is cooled to normal temperature, the movable iron core is moved upwards, and the MRE product which is subjected to pre-structuring and vulcanization is taken out from the ferromagnetic MRE mould.
The invention has the beneficial effects that:
the device and the method for synchronously pre-structuring and vulcanizing the magnetorheological elastomer are simple and practical, and the MRE is vulcanized and simultaneously pre-structured, so that the colloidal matrix of the MRE is in a liquefied state, the resistance of ferromagnetic particles in the colloidal matrix of the MRE in the ordered arrangement in a magnetic field is greatly reduced, the ordered arrangement formed in the MRE is increased, and the magnetorheological performance of the MRE is improved. The device provided by the invention has the advantages that the magnetic field intensity can be adjusted, the device is suitable for pre-structured treatment under different magnetic field intensities, the preparation of MRE products is more scientific and reasonable, the quality is improved, the preparation process of MRE can be simplified, and the preparation time of MRE is shortened.
Drawings
FIG. 1: the structure schematic diagram of the pre-structuring and vulcanizing synchronous processing device of the magnetorheological elastomer is disclosed;
in the figure, the device comprises a base iron core 1, a stand iron core 2, a stand iron core 3, a magnet exciting coil 4, an upper beam iron core 5, a movable iron core 6, a field intensity meter 7, a ferromagnetic upper heating plate 8, a ferromagnetic MRE die 9, a ferromagnetic lower heating plate 10, a temperature controller 11 and a direct current controller.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The following description of the embodiments of the present invention is made with reference to fig. 1:
as shown in FIG. 1, a magnetorheological elastomer pre-structuring and vulcanizing synchronous processing device comprises a closable magnetic circuit, a magnetic field control system and a temperature controller 10.
The magnetic circuit capable of being closed consists of a base iron core 1, a stand column iron core 2, an upper beam iron core 4, a movable iron core 5, a ferromagnetic MRE mold 8, a ferromagnetic upper heating plate 7 and a ferromagnetic lower heating plate 9. The magnetic field control system is composed of an excitation coil 3, a direct current controller 11 and a field intensity meter 6, wherein the direct current controller 11 adjusts the intensity of a magnetic field generated by the excitation coil 3 through controlling an excitation current. The ferromagnetic upper heating plate 7, the ferromagnetic lower heating plate 9, the movable iron core 5 and the temperature controller 10 form a vulcanization heating pressurization system. The movable iron core 5 controls the opening or closing of the magnetic circuit by moving up and down. The field intensity meter 6 is provided with a field intensity sensor which is fixed below the movable iron core 5 and is used for monitoring the size and the change of a magnetic field in a magnetic circuit. The ferromagnetic MRE die 8, the ferromagnetic upper heating plate 7, and the ferromagnetic lower heating plate 9 are made of ferromagnetic material to increase their magnetic permeability.
A pre-structuring and vulcanizing synchronous processing method of a magnetorheological elastomer comprises the following steps:
(1) placing the ferromagnetic MRE mould containing the MRE material below the movable iron core, and moving the movable iron core downwards to close the magnetic circuit;
(2) adjusting a temperature controller to enable the ferromagnetic upper heating plate and the ferromagnetic lower heating plate to generate heat, heating the ferromagnetic MRE mold, gradually softening the colloidal matrix of the MRE material to a fluid state, keeping the temperature stable to vulcanize the MRE material, and keeping the movable iron core acting on the ferromagnetic upper heating plate all the time;
(3) gradually adjusting the exciting current of the exciting circuit through a direct current controller until the required magnetic field intensity is reached, and keeping the magnetic field intensity until the final vulcanization process, and performing pre-structuring treatment on the MRE material;
(4) after the MRE material is insulated and vulcanized, adjusting a temperature controller to gradually reduce the temperature, simultaneously reducing an excitation circuit until the temperature is zero, and removing an excitation magnetic field;
(5) and when the ferromagnetic MRE mould is cooled to normal temperature, the movable iron core is moved upwards, and the MRE product which is subjected to pre-structuring and vulcanization is taken out from the ferromagnetic MRE mould.
The device and the method for synchronously pre-structuring and vulcanizing the magnetorheological elastomer are simple and practical, and the MRE is vulcanized and simultaneously pre-structured, so that the colloidal matrix of the MRE is in a liquefied state, the resistance of ferromagnetic particles in the colloidal matrix of the MRE in the ordered arrangement in a magnetic field is greatly reduced, the ordered arrangement formed in the MRE is increased, and the magnetorheological performance of the MRE is improved. The device provided by the invention has the advantages that the magnetic field intensity can be adjusted, the device is suitable for pre-structured treatment under different magnetic field intensities, the preparation of MRE products is more scientific and reasonable, the quality is improved, the preparation process of MRE can be simplified, and the preparation time of MRE is shortened.
The invention has been described above with reference to the accompanying drawings, it is obvious that the invention is not limited to the specific implementation in the above-described manner, and it is within the scope of the invention to adopt such insubstantial modifications of the inventive concept and solution, or to apply the inventive concept and solution directly to other applications without such modifications.
Claims (8)
1. The device for synchronously pre-structuring and vulcanizing the magnetorheological elastomer is characterized by comprising a closable magnetic circuit, a magnetic field control system and a temperature controller.
2. The device of claim 1, wherein the closable magnetic circuit comprises a base core, a column core, an upper beam core, a movable core, a ferromagnetic MRE mold, a ferromagnetic upper heating plate, and a ferromagnetic lower heating plate.
3. The magnetorheological elastomer pre-structured and vulcanization synchronous processing device of claim 2, wherein the movable iron core controls the opening or closing of the magnetic circuit by moving up and down.
4. The synchronous pre-structuring and vulcanizing device for magnetorheological elastomers according to claim 3, wherein the magnetic field control system comprises an excitation coil, a DC current controller and a field intensity meter, and the DC current controller adjusts the intensity of the magnetic field generated by the excitation coil through controlling the excitation current.
5. The magnetorheological elastomer pre-structuring and vulcanizing synchronous processing device according to claim 2, wherein the ferromagnetic upper heating plate, the ferromagnetic lower heating plate, the movable iron core and the temperature controller form a vulcanizing heating and pressurizing system.
6. The device of claim 2, wherein the ferromagnetic MRE mold, the ferromagnetic upper heating plate, and the ferromagnetic lower heating plate are made of ferromagnetic material to increase magnetic permeability.
7. The synchronous pre-structuring and vulcanizing device for magnetorheological elastomers according to claim 4, wherein a field intensity sensor is arranged in the field intensity meter, the field intensity sensor is fixed below the movable iron core, and the field intensity meter is used for monitoring the size and the change of the magnetic field in the magnetic circuit.
8. The method for synchronously pre-structuring and vulcanizing magnetorheological elastomer according to claim 4, comprising the following steps:
(1) placing the ferromagnetic MRE mould containing the MRE material below the movable iron core, and moving the movable iron core downwards to close the magnetic circuit;
(2) adjusting a temperature controller to enable the ferromagnetic upper heating plate and the ferromagnetic lower heating plate to generate heat, heating the ferromagnetic MRE mold, gradually softening the colloidal matrix of the MRE material to a fluid state, keeping the temperature stable to vulcanize the MRE material, and keeping the movable iron core acting on the ferromagnetic upper heating plate all the time;
(3) gradually adjusting the exciting current of the exciting circuit through a direct current controller until the required magnetic field intensity is reached, and keeping the magnetic field intensity until the final vulcanization process, and performing pre-structuring treatment on the MRE material;
(4) after the MRE material is insulated and vulcanized, adjusting a temperature controller to gradually reduce the temperature, simultaneously reducing an excitation circuit until the temperature is zero, and removing an excitation magnetic field;
(5) and when the ferromagnetic MRE mould is cooled to normal temperature, the movable iron core is moved upwards, and the MRE product which is subjected to pre-structuring and vulcanization is taken out from the ferromagnetic MRE mould.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110295985.5A CN113001840A (en) | 2021-03-19 | 2021-03-19 | Device and method for synchronously pre-structuring and vulcanizing magnetorheological elastomer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110295985.5A CN113001840A (en) | 2021-03-19 | 2021-03-19 | Device and method for synchronously pre-structuring and vulcanizing magnetorheological elastomer |
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| Publication Number | Publication Date |
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| CN113001840A true CN113001840A (en) | 2021-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110295985.5A Pending CN113001840A (en) | 2021-03-19 | 2021-03-19 | Device and method for synchronously pre-structuring and vulcanizing magnetorheological elastomer |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102782358A (en) * | 2009-12-23 | 2012-11-14 | 因文图斯工程有限公司 | Valve for a magnetorheological liquid |
| CN103878913A (en) * | 2014-03-13 | 2014-06-25 | 安徽微威胶件集团有限公司 | Pre-structuring device of magneto-rheological elastomer |
| KR20170129441A (en) * | 2016-05-17 | 2017-11-27 | 수원대학교산학협력단 | Ethylene-Acrylic Rubber based magneto-rheological elastomer having excellent low temperature flexibility, heat resistance, oil resistance, weather resistance, damping and MR effect, and the making method of the same |
| CN107972216A (en) * | 2017-12-01 | 2018-05-01 | 湘潭大学 | Magnetic rheology elastic body Integral molding device for insoles based on multi- scenarios method effect |
| CN110398997A (en) * | 2019-08-29 | 2019-11-01 | 厦门理工学院 | A kind of preparation facilities of magnetic rheology elastic body, system and method |
-
2021
- 2021-03-19 CN CN202110295985.5A patent/CN113001840A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102782358A (en) * | 2009-12-23 | 2012-11-14 | 因文图斯工程有限公司 | Valve for a magnetorheological liquid |
| CN103878913A (en) * | 2014-03-13 | 2014-06-25 | 安徽微威胶件集团有限公司 | Pre-structuring device of magneto-rheological elastomer |
| KR20170129441A (en) * | 2016-05-17 | 2017-11-27 | 수원대학교산학협력단 | Ethylene-Acrylic Rubber based magneto-rheological elastomer having excellent low temperature flexibility, heat resistance, oil resistance, weather resistance, damping and MR effect, and the making method of the same |
| CN107972216A (en) * | 2017-12-01 | 2018-05-01 | 湘潭大学 | Magnetic rheology elastic body Integral molding device for insoles based on multi- scenarios method effect |
| CN110398997A (en) * | 2019-08-29 | 2019-11-01 | 厦门理工学院 | A kind of preparation facilities of magnetic rheology elastic body, system and method |
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Application publication date: 20210622 |
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