CN101740192A - Thermoplastic magnetorheological elastomer composite material and preparation method thereof - Google Patents
Thermoplastic magnetorheological elastomer composite material and preparation method thereof Download PDFInfo
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- CN101740192A CN101740192A CN200910312198A CN200910312198A CN101740192A CN 101740192 A CN101740192 A CN 101740192A CN 200910312198 A CN200910312198 A CN 200910312198A CN 200910312198 A CN200910312198 A CN 200910312198A CN 101740192 A CN101740192 A CN 101740192A
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Abstract
The invention relates to a thermoplastic magnetorheological elastomer composite material and a preparation method thereof, belonging to the technical field of materials. The composite material comprises the following components in percentage by weight: 40-85% of carbonyl iron, 0.4-2.0% of coupling agent, 8-30% of thermoplastic elastomer and 6-40% of plasticizing agent. The preparation method of the composite material comprises the following steps of: step 1, taking all the components in the percentage by weight; step 2, stirring the carbonyl iron and the coupling agent in a high-speed mixer to obtain a mixture; step 3, stirring the mixture, the thermoplastic elastomer and the plasticizing agent in a low-speed mixer to obtain a premix; step 4, taking the premix, mixing and milling the premix by a double screw extruder at 180-240 DEG C, extruding and granulating; and then, molding the granules at 180-240 DEG C under the action of a magnetic field, cooling, forming and demolding to obtain the thermoplastic magnetorheological elastomer composite material. The method of the invention has simple processes, and the thermoplastic magnetorheological elastomer composite material prepared by the method of the invention has excellent mechanical properties, stability and magnetic response efficiency, can be formed by multiple processes and can realize industrialization and commercialization easily.
Description
Technical field
The present invention relates to the composite material in a kind of material technology field and preparation method thereof, specifically is a kind of thermoplastic magnetorheological elastomer composite material and preparation method thereof.
Background technology
Magnetorheological materials is that a kind of rheological property can be by the novel intelligent material of magnetic field control.Magnetic rheology elastic body is a new branch of magnetorheological materials; it is that soft magnetic particles with micro-meter scale is mixed in liquid state or the visco-plastic body high molecular polymer; form to solidify after the special ordered structure and form; such material is in magnetic field; its mechanics, all performances of electricity will change with adding magnetic field intensity, and these unique advantages make it in safety engineering fields such as the suspension of tuning bump leveller, adjustable rigidity and adjustable impedance surfaces great application prospect be arranged.Magnetic rheology elastic body has magnetorheological materials and elastomeric advantage concurrently, as responds soon, good reversibility, and controlled ability is strong etc., has overcome shortcomings such as magnetic flow liquid sedimentation, poor stability again, thereby becomes a focus of magnetorheological materials research in recent years.Can be made into devices such as various vibration damping holders, suspension, impact bump leveller, vibration isolator with magnetic rheology elastic body, can simplify mechanical structure greatly, the control performance of the system that enhances your vigilance is finished the function that some traditional mechanical structures are difficult to realize.
Find that through literature search Chinese utility model patent ZL 200820002729.2 discloses a kind of magnetic rheology elastic body vibration isolator to prior art; China utility model patent ZL 200620154712.X discloses a kind of rotor oscillation control magnetic rheology elastic body damper; The magnetic rheology elastic body that described vibration isolator and damper adopt is to be the magnetic rheology elastic body of matrix with silicon rubber or natural rubber, but, these rubber-based magnetorheological elastomer composite materials, have that mechanical strength is undesirable, processing is inconvenient (auxiliary agent is many, need to vulcanize, can't kinds of processes moulding), heat-resisting weather-proof many shortcomings such as wear no resistance, magnetic rheology effect (amplitude of variation of modulus of elasticity) is still waiting further raising simultaneously, makes magnetic rheology elastic body be very restricted in the application in safety engineering fields such as damping isolation device.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, provide a kind of thermoplastic magnetorheological elastomer multiple
Condensation material and preparation method thereof.Method technology of the present invention is simple, and the thermoplastic magnetorheological elastomer composite material mechanical performance of preparation, stability and magnetic response usefulness are good, but the kinds of processes moulding easily realizes industrialization and commercialization.
The present invention is achieved by the following technical solutions:
The present invention relates to a kind of thermoplastic magnetorheological elastomer composite material, its component and percentage by weight are: carbonyl iron 40～85%, coupling agent 0.4～2.0%, thermoplastic elastomer (TPE) 8～30%, plasticizer 6～40%.
Described coupling agent is silane coupler, titanate coupling agent or stearic acid.
Described thermoplastic elastomer (TPE) is styrene type thermoplastic elastomer (TPE), SIS/SEBS (SEBS), styrene-ethylene-propylene-styrene copolymer (SEPS) or styrene-ethylene-ethylene-propylene-styrol copolymer (SEEPS).
Described plasticizer is white oil or naphthenic rubber oil.
The invention still further relates to a kind of preparation method of aforesaid thermoplastic magnetorheological elastomer composite material, comprise the steps:
Step 1 is got each component by weight percentage;
Step 2 stirs carbonyl iron and coupling agent in high-speed mixer, get mixture;
Step 3 stirs mixture and thermoplastic elastomer (TPE), plasticizer in low speed mixer, get premix;
Step 4 is got premix, uses double screw extruder mixing under 180～240 ℃, extrudes granulation;
With particle mold pressing under 180～240 ℃ of the action of a magnetic fields, the cooling forming demoulding promptly gets thermoplastic magnetorheological elastomer composite material afterwards.
In step 2 and the step 3, the time of described stirring is 10～20min.
In the step 4, the time of described mold pressing is 20～40min.
Compared with prior art, the present invention has following beneficial effect: method technology of the present invention is simple, thermoplastic magnetorheological elastomer composite material mechanical performance, stability and the magnetic response usefulness of preparation are good, but the kinds of processes moulding easily realizes industrialization and commercialization.
Embodiment
Present embodiment has provided detailed execution mode and process being to implement under the prerequisite with the technical solution of the present invention, but protection scope of the present invention is not limited to following embodiment.The experimental technique of unreceipted actual conditions in the following example, usually according to normal condition, or the condition of advising according to manufacturer.
Embodiment 1
The component of the thermoplastic magnetorheological elastomer composite material that present embodiment relates to and parts by weight are:
85 parts of carbonyl irons, 1 part of silane coupler, 8 parts of SIS/SEBS (SEBS), 6 parts of white oils.
The method for preparing thermoplastic magnetorheological elastomer composite material comprises the steps:
Step 1 is got each component by weight percentage;
Step 2 stirs 20min with carbonyl iron and silane coupler in high-speed mixer, get mixture;
Step 3 stirs 10min with mixture and SEBS, white oil in low speed mixer, get premix;
Step 4 is got premix, uses double screw extruder mixing under 240 ℃, extrudes granulation; With particle mold pressing 40min under 240 ℃ of the action of a magnetic fields, the cooling forming demoulding promptly gets thermoplastic magnetorheological elastomer composite material afterwards.
Embodiment 2
The component of the thermoplastic magnetorheological elastomer composite material that present embodiment relates to and parts by weight are:
40 parts of carbonyl irons, 0.4 part of titanate coupling agent, 19.6 parts of styrene-ethylenes-propylene-styrene copolymer (SEPS), 40 parts of naphthenic rubber oil.
The method for preparing thermoplastic magnetorheological elastomer composite material comprises the steps:
Step 1 is got each component by weight percentage;
Step 2 stirs 10min with carbonyl iron and titanate coupling agent in high-speed mixer, get mixture;
Step 3 stirs 20min with mixture and SEPS, naphthenic rubber oil in low speed mixer, get premix;
Step 4 is got premix, uses double screw extruder mixing under 180 ℃, extrudes granulation; With particle mold pressing 20min under 1 80 ℃ of the action of a magnetic fields, the cooling forming demoulding promptly gets thermoplastic magnetorheological elastomer composite material afterwards.
Embodiment 3
The component of the thermoplastic magnetorheological elastomer composite material that present embodiment relates to and parts by weight are:
50 parts of carbonyl irons, 2 parts of stearic acid coupling agents, 30 parts of styrene-ethylene-ethylene-propylenes-styrol copolymer (SEEPS), 18 parts of naphthenic rubber oil.
The method for preparing thermoplastic magnetorheological elastomer composite material comprises the steps:
Step 1 is got each component by weight percentage;
Step 2 stirs 15min with carbonyl iron and stearic acid coupling agent in high-speed mixer, get mixture;
Step 3, with mixture and SEEPS, naphthenic rubber oil stirs 15min in low speed mixer, gets premix;
Step 4 is got premix, uses double screw extruder mixing under 210 ℃, extrudes granulation; With particle mold pressing 30min under 210 ℃ of the action of a magnetic fields, the cooling forming demoulding promptly gets thermoplastic magnetorheological elastomer composite material afterwards.
The magnetic response usefulness result of the thermoplastic magnetorheological elastomer composite material of embodiment 1～3 preparation is as follows: modulus of elasticity is estimated the magnetic response usefulness of thermoplastic magnetorheological elastomer with the variation of externally-applied magnetic field intensity under use MDMA (the dynamic mechanical analysis instrument of externally-applied magnetic field) test implementation example 1～3 preparation-obtained thermoplastic magnetorheological elastomer composite material normal temperature to the relative magnetic rheology effect of the ratio calculation of initial elasticity modulus by the modulus of elasticity increment.The result shows that the relative magnetic rheology effect of the thermoplastic magnetorheological elastomer that embodiment 1～3 prepares is respectively 250%, 80%, 120%.
Claims (7)
1. a thermoplastic magnetorheological elastomer composite material is characterized in that, its component and percentage by weight are: carbonyl iron 40～85%, coupling agent 0.4～2.0%, thermoplastic elastomer (TPE) 8～30%, plasticizer 6～40%.
2. thermoplastic magnetorheological elastomer composite material according to claim 1 is characterized in that, described coupling agent is silane coupler, titanate coupling agent or stearic acid.
3. thermoplastic magnetorheological elastomer composite material according to claim 1, it is characterized in that described thermoplastic elastomer (TPE) is styrene type thermoplastic elastomer (TPE), SIS/SEBS, styrene ethylene-propylene-styrene copolymer or styrene-ethylene-ethylene-propylene-styrol copolymer.
4. thermoplastic magnetorheological elastomer composite material according to claim 1 is characterized in that, described plasticizer is white oil or naphthenic rubber oil.
5. the preparation method of a thermoplastic magnetorheological elastomer composite material according to claim 1 is characterized in that, comprises the steps:
Step 1 is got each component by weight percentage;
Step 2 stirs carbonyl iron and coupling agent in high-speed mixer, get mixture;
Step 3 stirs mixture and thermoplastic elastomer (TPE), plasticizer in low speed mixer, get premix;
Step 4 is got premix, uses double screw extruder mixing under 180～240 ℃, extrudes granulation; With particle mold pressing under 180～240 ℃ of the action of a magnetic fields, the cooling forming demoulding promptly gets thermoplastic magnetorheological elastomer composite material afterwards.
6. the preparation method of thermoplastic magnetorheological elastomer composite material according to claim 5 is characterized in that, in step 2 and the step 3, the time of described stirring is 10～20min.
7. the preparation method of thermoplastic magnetorheological elastomer composite material according to claim 5 is characterized in that, in the step 4, the time of described mold pressing is 20～40min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2009103121986A CN101740192B (en) | 2009-12-24 | 2009-12-24 | Thermoplastic magnetorheological elastomer composite material and preparation method thereof |
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| CN2009103121986A CN101740192B (en) | 2009-12-24 | 2009-12-24 | Thermoplastic magnetorheological elastomer composite material and preparation method thereof |
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| CN101740192A true CN101740192A (en) | 2010-06-16 |
| CN101740192B CN101740192B (en) | 2012-07-18 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102737803A (en) * | 2012-06-29 | 2012-10-17 | 中国科学技术大学 | Phase change type magnetorheological material and preparation method thereof |
| CN105598459A (en) * | 2016-01-25 | 2016-05-25 | 广东工业大学 | Method for preparing magnetorheological fluid based on iron-based alloy micro-wire |
| CN107418210A (en) * | 2017-06-07 | 2017-12-01 | 常州市瑞泰物资有限公司 | A kind of preparation method of high rheomagnetic magnetorheological elastomer based on silicone rubber |
| CN108987087A (en) * | 2018-07-13 | 2018-12-11 | 吴江市聚盈电子材料科技有限公司 | A kind of preparation method for adulterating bismuth element magnetic material |
| CN110283373A (en) * | 2019-07-19 | 2019-09-27 | 航天特种材料及工艺技术研究所 | A kind of thermoplastic magnetic composite and preparation method |
| CN110319143A (en) * | 2019-07-12 | 2019-10-11 | 吉林建筑大学 | A kind of dismountable bumping post |
| CN111334357A (en) * | 2020-04-14 | 2020-06-26 | 无锡中石油润滑脂有限责任公司 | Mineral oil lithium-based lubricating grease and preparation process thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0706709A1 (en) * | 1993-06-30 | 1996-04-17 | Carnegie Mellon University | Metal, alloy, or metal carbide nanoparticles and a process for forming same |
-
2009
- 2009-12-24 CN CN2009103121986A patent/CN101740192B/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102737803A (en) * | 2012-06-29 | 2012-10-17 | 中国科学技术大学 | Phase change type magnetorheological material and preparation method thereof |
| CN102737803B (en) * | 2012-06-29 | 2016-04-13 | 中国科学技术大学 | Phase change type magnetorheological material and preparation method thereof |
| CN105598459A (en) * | 2016-01-25 | 2016-05-25 | 广东工业大学 | Method for preparing magnetorheological fluid based on iron-based alloy micro-wire |
| CN107418210A (en) * | 2017-06-07 | 2017-12-01 | 常州市瑞泰物资有限公司 | A kind of preparation method of high rheomagnetic magnetorheological elastomer based on silicone rubber |
| CN108987087A (en) * | 2018-07-13 | 2018-12-11 | 吴江市聚盈电子材料科技有限公司 | A kind of preparation method for adulterating bismuth element magnetic material |
| CN110319143A (en) * | 2019-07-12 | 2019-10-11 | 吉林建筑大学 | A kind of dismountable bumping post |
| CN110283373A (en) * | 2019-07-19 | 2019-09-27 | 航天特种材料及工艺技术研究所 | A kind of thermoplastic magnetic composite and preparation method |
| CN111334357A (en) * | 2020-04-14 | 2020-06-26 | 无锡中石油润滑脂有限责任公司 | Mineral oil lithium-based lubricating grease and preparation process thereof |
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| CN101740192B (en) | 2012-07-18 |
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