CN103215113A - Magneto-rheological fluid with good settling agglomeration resistance - Google Patents
Magneto-rheological fluid with good settling agglomeration resistance Download PDFInfo
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- CN103215113A CN103215113A CN2013101231206A CN201310123120A CN103215113A CN 103215113 A CN103215113 A CN 103215113A CN 2013101231206 A CN2013101231206 A CN 2013101231206A CN 201310123120 A CN201310123120 A CN 201310123120A CN 103215113 A CN103215113 A CN 103215113A
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Abstract
The invention relates to magneto-rheological fluid with good settling agglomeration resistance. The magneto-rheological fluid comprises the following ingredients in parts by weight according to 100 volume parts: 125-225 parts of ferromagnetic particles, 30-85 parts of carrier fluid, 0.2-5 parts of xanthan gum, and 0-12.5 parts of additives, wherein the additives are a thixotropic agent, a dispersing agent, an antioxidant and a lubricant when the carrier fluid is water-based; and when the carrier fluid is oil-based, the additives are a thixotropic agent, a dispersing agent, and a lubricant. The magneto-rheological fluid is good in stability within a larger temperature range (minus 18 DEG C-130 DEG C), difficult to settle, and also keeps the original performances, namely high shearing stress and good friction property.
Description
Technical field
The present invention relates to a kind of magnetic flow liquid, particularly a kind of magnetic flow liquid with good anti-sedimentation agglomeration.
Background technology
Magnetic flow liquid (Magnetorheological fluid, MRF) be a kind of dispersion material of forming by ferromegnetism suspending phase, suspension medium and additive, under externally-applied magnetic field, have moment, reversibly change the property of Bingham plastic body into from Newtonian fuid, also have simultaneously high yield stress, energy consumption low, be subjected to characteristics such as impurity effect is little, become the focus of domestic and international research, be mainly used to make devices such as bump leveller, deoscillator, clutch coupling and polisher, be widely used in fields such as aerospace, medicine equipment, building, automobile and accurate manufacturing.Yet, place for some time when magnetic flow liquid, tend to produce sedimentation.The solid, liquid that the sedimentation of magnetic flow liquid will cause is separated and has had a strong impact on the performance of magnetic flow liquid, solve the method that the anti-sedimentation of magnetic flow liquid is reunited at present, mainly be to carry out the modification processing, improve the magnetic flow liquid dispersity by adding tensio-active agent or suspending phase particle surface.The additive that uses is generally in the majority with anion surfactant, though this class additive is reunited to the anti-sedimentation that improves magnetic flow liquid certain effect is arranged, and its anti-effect of settling is bad; In addition, add the anti-sedimentation that thixotropic agent also can improve magnetic flow liquid and reunite,, but could effectively prevent sinking during the large usage quantity of adding silicon-dioxide, and a large amount of silicon-dioxide, easily cause the increase of magnetic flow liquid null field viscosity and influence use as silicon-dioxide.
Therefore, how to improve the stability of magnetic flow liquid, improve its anti-sedimentation agglomeration, become one of main difficult problem that magnetic flow liquid faces.
Summary of the invention
The objective of the invention is, a kind of magnetic flow liquid with good anti-sedimentation agglomeration is provided, this magnetic flow liquid is (18 ℃～130 ℃) in bigger temperature range, good stability, free settling not, and kept the original performance of magnetic flow liquid, promptly have high shear-stress and good frictional behaviour.
Technical scheme of the present invention is:
Have the magnetic flow liquid of good anti-sedimentation agglomeration, form, the consisting of of each component in its per 100 parts by volume magnetic flow liquids by ferromagnetic particle disperse phase, carrier fluid, xanthan gum and additive:
Ferromagnetic particle: 125～225 weight parts;
Carrier fluid: 30～85 parts by volume;
Xanthan gum: 0.2～5 weight part;
Additive: 0～12.5 weight part;
When wherein carrier fluid was water base, additive was thixotropic agent, dispersion agent, antioxidant and lubricant; When carrier fluid was oil base, additive was thixotropic agent, dispersion agent and lubricant.
Described ferromagnetic particle is a carbonyl iron dust, and described carbonyl iron dust is reducing carbonyl iron powder or the phosphate carbonyl iron powder of diameter of particle 0.05-100um.
The diameter of particle of described carbonyl iron dust is 0.5～30 um.
Described carrier fluid is water base or oil base, and wherein, water base is mixture in deionized water and the ethylene glycol, and the di-alcohol massfraction is 0～10%; Oil base is any one in silicone oil, mineral oil and the synthin oil, flash-point〉180 ℃, pour point＜-50 ℃, viscosity index height.
Described xanthan gum is for being white in color or lurid Powdered its purity〉99%, granularity is 75-250um.
Described thixotropic agent be selected from inorganic bentonite, organobentonite, nano silicon any one.
Described dispersion agent is any one in stearate, sulfonate, alkylsalicylate, polyoxyethylene glycol, the dialkyl dithiophosphate.
Described antioxidant is any one in zinc dialkyl dithiophosphate, dialkyl dithiocarbamate, nitrogenous heterogeneous ring compound, phenolic antioxidant, amine antioxidants, the nitrite.
Described lubricant is Zn
3(PO
4)
2, MoS
2, in the Graphite Powder 99, fluorographite any one.
Have the preparation method of the magnetic flow liquid of good anti-sedimentation agglomeration, following steps arranged:
Get each material according to above-mentioned proportioning,
1) carrier fluid is placed ball grinder, adds dispersion agent and/or oxidation inhibitor and fully mix, add carbonyl iron dust again after mechanical stirring even;
2) step 1) gained object ultra-sonic dispersion 20 minutes in 70 ℃ of water-baths, add thixotropic agent, lubricant, high speed dispersion is 10 minutes under 8000 rev/mins the rotating speed, uses the ball mill Ball milling then 5～15 hours, obtains having the magnetic flow liquid of good anti-sedimentation agglomeration.
Adopt technique scheme: xanthan gum has good suspension effect to insoluble solid and oil droplet.Xanthan gum colloidal sol molecular energy forms and surpasses in conjunction with zonal spiral interpolymer, constitutes the reticulated structure of similar glue, so can support the form of solid particulate, drop and bubble, demonstrates very strong stable emulsifying effect and higher suspension ability; (18 ℃～130 ℃) keep functions peculiar in bigger temperature range; Can have gratifying compatibility with multiple material interworking.The present invention adopts xanthan gum to make the ferromagnetic particle disperse phase be uniformly dispersed for a long time as additive, free settling not, improve the sedimentation resistance stability of magnetic flow liquid, show that by shear-stress test and tribology experiments magnetic flow liquid of the present invention has kept original performance, be magnetic flow liquid shear-stress height of the present invention, frictional behaviour is good.
Reagent of the present invention is the commercially available prod, wherein
Xanthan gum adopts purity〉99%, granularity is the commercially available prod of 75-250um;
Reducing carbonyl iron powder and phosphate carbonyl iron powder, diameter of particle 0.05～100um commercially available prod of employing;
Silicone oil, mineral oil, synthin oil adopt commercially available flash-point〉180 ℃, pour point＜-50 ℃, the product that viscosity index is high;
The commercially available prod that inorganic bentonite, organobentonite, nano silicon adopt purity 〉=90%;
Stearate, sulfonate, alkylsalicylate, polyoxyethylene glycol, di-alcohol, dialkyl dithiophosphate adopt commercially available chemical pure product;
Zinc dialkyl dithiophosphate, dialkyl dithiocarbamate, nitrogenous heterogeneous ring compound, phenolic antioxidant, amine antioxidants, nitrite adopt commercially available chemical pure product;
Lubricant is selected from Zn
3(PO
4)
2, MoS
2, Graphite Powder 99, fluorographite adopt commercially available technical grade product.
The present invention is described further below in conjunction with embodiment.
When weight part of the present invention was gram, corresponding volume part was a milliliter; When weight part was kilogram, corresponding volume part was for rising.
Embodiment
Embodiment 1
Prepare the magnetic flow liquid that 200ml has good anti-sedimentation agglomeration according to following steps: measure silicone oil 146ml, lithium stearate 1.5g, xanthan gum 1.1g places the 400ml ball grinder, mix, add reducing carbonyl iron powder 390g, mechanical stirring is even, ultra-sonic dispersion is 20 minutes in 70 ℃ of water-baths, add organobentonite 8g again, behind the molybdenumdisulphide 2g with emulsify at a high speed dispersion machine high speed dispersion 10 minutes under 8000 rev/mins rotating speed, used the ball mill Ball milling then 8 hours, the ball milling linear velocity is not less than 125 meters/minute, obtains having the magnetic flow liquid that anti-sedimentation is reunited.
With rotary viscosity measuring magnetic flow liquid room temperature null field viscosity is 1500mp.s, leaves standstill sedimentation in 24 hours and is about 0, very soft.
Embodiment 2
Prepare the magnetic flow liquid that 200ml has good anti-sedimentation agglomeration according to following steps: measure deionized water 150ml, polyoxyethylene glycol 6g, zinc dialkyl dithiophosphate 1.4g, xanthan gum 0.8g places the 400ml ball grinder, mix, add phosphate carbonyl iron powder 390g, mechanical stirring is even, ultra-sonic dispersion is 20 minutes in 70 ℃ of water-baths, add inorganic bentonite 6g again, behind the Graphite Powder 99 2g with emulsify at a high speed dispersion machine high speed dispersion 10 minutes under 8000 rev/mins rotating speed, used the ball mill Ball milling then 6 hours, the ball milling linear velocity is not less than 125 meters/minute, obtains having the magnetic flow liquid that anti-sedimentation is reunited.
This magnetic flow liquid is 1400mp.s with rotary viscosity measuring magnetic flow liquid room temperature null field viscosity, leaves standstill sedimentation in 1 month and is about 6%, and is soft.
Embodiment 3
Prepare the magnetic flow liquid that 200ml has good anti-sedimentation agglomeration according to following steps: measure Poly alpha Olefins (PAO) 146ml, lithium stearate 1.5g, xanthan gum 2.6g places the 400ml ball grinder, mix, add phosphate carbonyl iron powder 390g, mechanical stirring is even, ultra-sonic dispersion is 20 minutes in 70 ℃ of water-baths, add organobentonite 8g again, behind the molybdenumdisulphide 2g with emulsify at a high speed dispersion machine high speed dispersion 10 minutes under 8000 rev/mins rotating speed, used the ball mill Ball milling then 8 hours, the ball milling linear velocity is not less than 125 meters/minute, obtains having the magnetic flow liquid that anti-sedimentation is reunited.
With rotary viscosity measuring magnetic flow liquid room temperature null field viscosity is 1500mp.s, leaves standstill sedimentation in 3 months and is about 10% and does not have and obviously to harden.
Embodiment 4
Prepare the magnetic flow liquid that 200ml has good anti-sedimentation agglomeration according to following steps: measure Poly alpha Olefins (PAO) 146ml, low alkali value calcium alkylbenzenesulfonate 3g, xanthan gum 2.6g places the 400ml ball grinder, mix, add reducing carbonyl iron powder 390g, mechanical stirring is even, ultra-sonic dispersion is 20 minutes in 70 ℃ of water-baths, add nano silicon 3g again, behind the molybdenumdisulphide 2g with emulsify at a high speed dispersion machine high speed dispersion 10 minutes under 8000 rev/mins rotating speed, used the ball mill Ball milling then 8 hours, ball milling linear velocity 〉=125 meter/minute obtain having the magnetic flow liquid that anti-sedimentation is reunited.
Described magnetic flow liquid is 1000mp.s with rotary viscosity measuring magnetic flow liquid room temperature null field viscosity, leaves standstill sedimentation in 3 months and is about 12% and does not have and obviously to harden.
Conclusion: by the adding of xanthan gum, the room temperature null field modest viscosity of magnetic flow liquid of the present invention, kept the original performance of magnetic flow liquid, for example shear-stress and frictional behaviour etc., the described magnetic flow liquid of magnetic flow liquid of the present invention and background technology relatively, the good stability of magnetic flow liquid of the present invention, anti-sedimentation reunion performance is good, the described magnetic flow liquid of background technology leaves standstill sedimentation in 3 months〉15% and have obviously and harden.
Claims (9)
1. the magnetic flow liquid of a good resistance sedimentation agglomeration is characterized in that, this magnetic flow liquid is made up of ferromagnetic particle, carrier fluid, xanthan gum and additive, the consisting of of each component in its per 100 parts by volume magnetic flow liquids:
Ferromagnetic particle: 125～225 weight parts;
Carrier fluid: 30～85 parts by volume;
Xanthan gum: 0.2～5 weight part;
Additive: 0～12.5 weight part;
When wherein carrier fluid was water base, additive was thixotropic agent, dispersion agent, antioxidant and lubricant; When carrier fluid was oil base, additive was thixotropic agent, dispersion agent and lubricant.
2. according to right 1 desired magnetic flow liquid with good anti-sedimentation agglomeration, it is characterized in that: described ferromagnetic particle is a carbonyl iron dust, and described carbonyl iron dust is reducing carbonyl iron powder or the phosphate carbonyl iron powder of diameter of particle 0.05～100um.
3. according to right 2 desired magnetic flow liquids with good anti-sedimentation agglomeration, it is characterized in that: the diameter of particle of described carbonyl iron dust is 0.5～30 um.
4. according to right 1 desired magnetic flow liquid with good anti-sedimentation agglomeration, it is characterized in that: described carrier fluid is water base or oil base, and wherein, water base is mixture in deionized water and the ethylene glycol; Oil base is any one in silicone oil, mineral oil and the synthin oil.
5. according to right 1 desired magnetic flow liquid with good anti-sedimentation agglomeration, it is characterized in that: described thixotropic agent is selected from any one in inorganic bentonite, organobentonite, the nano silicon.
6. according to right 1 desired magnetic flow liquid with good anti-sedimentation agglomeration, it is characterized in that: described dispersion agent is any one in stearate, sulfonate, alkylsalicylate, polyoxyethylene glycol, the dialkyl dithiophosphate.
7. according to right 1 desired magnetic flow liquid with good anti-sedimentation agglomeration, it is characterized in that: described antioxidant is any one in zinc dialkyl dithiophosphate, dialkyl dithiocarbamate, nitrogenous heterogeneous ring compound, phenolic antioxidant, amine antioxidants, the nitrite.
8. according to right 1 desired magnetic flow liquid with good anti-sedimentation agglomeration, it is characterized in that: described lubricant is Zn
3(PO
4)
2, MoS
2, in the Graphite Powder 99, fluorographite any one.
9. have the preparation method of the magnetic flow liquid of good anti-sedimentation agglomeration, it is characterized in that following steps are arranged:
Get each material according to the described proportioning of claim 1,
1) carrier fluid, xanthan gum are placed ball grinder, add dispersion agent and/or oxidation inhibitor and fully mix, add carbonyl iron dust again after mechanical stirring even;
2) step 1) gained object ultra-sonic dispersion 20 minutes in 70 ℃ of water-baths, add thixotropic agent, lubricant, high speed dispersion is 10 minutes under 8000 rev/mins the rotating speed, uses the ball mill Ball milling then 5～15 hours, obtains having the magnetic flow liquid of good anti-sedimentation agglomeration.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103447889A (en) * | 2013-07-26 | 2013-12-18 | 黑龙江科技大学 | Polishing method and device based on magnetorheological glue |
| CN103465112A (en) * | 2013-09-03 | 2013-12-25 | 黑龙江科技大学 | Magnetorheological colloid or magnetorheological foam material based flexible polishing method and device |
| CN104017503A (en) * | 2014-06-25 | 2014-09-03 | 中国人民解放军国防科学技术大学 | Non-water-based magnetorheological polishing solution and preparation method thereof |
| CN107418654A (en) * | 2017-06-05 | 2017-12-01 | 上海烯古能源科技有限公司 | A kind of graphene lubricant oil composite and preparation method and application |
| CN111623072A (en) * | 2020-06-09 | 2020-09-04 | 湖南大学 | Fluid damper |
| CN113027974A (en) * | 2021-02-26 | 2021-06-25 | 上海理工大学 | Multi-mode magneto-rheological shear thickening liquid damper |
| CN113444564A (en) * | 2021-06-28 | 2021-09-28 | 陈进操 | Modified magnetic particles suitable for large-scale production, magnetorheological fluid, and preparation method and application thereof |
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| US20040021126A1 (en) * | 2000-11-29 | 2004-02-05 | Reji John | Magnetorheological fluid composition and a process for preparation thereof |
| CN101139504A (en) * | 2007-10-30 | 2008-03-12 | 西安工业大学 | Magnetorheologicai polishing liquid and preparation method thereof |
| CN101928626A (en) * | 2009-06-22 | 2010-12-29 | 重庆仪表材料研究所 | High-performance magnetorheological fluid |
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2013
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20040021126A1 (en) * | 2000-11-29 | 2004-02-05 | Reji John | Magnetorheological fluid composition and a process for preparation thereof |
| CN101139504A (en) * | 2007-10-30 | 2008-03-12 | 西安工业大学 | Magnetorheologicai polishing liquid and preparation method thereof |
| CN101928626A (en) * | 2009-06-22 | 2010-12-29 | 重庆仪表材料研究所 | High-performance magnetorheological fluid |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103447889A (en) * | 2013-07-26 | 2013-12-18 | 黑龙江科技大学 | Polishing method and device based on magnetorheological glue |
| CN103447889B (en) * | 2013-07-26 | 2015-12-09 | 黑龙江科技大学 | A kind of finishing method based on magnetorheological glue and device |
| CN103465112A (en) * | 2013-09-03 | 2013-12-25 | 黑龙江科技大学 | Magnetorheological colloid or magnetorheological foam material based flexible polishing method and device |
| CN103465112B (en) * | 2013-09-03 | 2016-02-10 | 黑龙江科技大学 | Based on the flexible polishing method and apparatus of magnetorheological colloid or magnetorheological foamed material |
| CN104017503A (en) * | 2014-06-25 | 2014-09-03 | 中国人民解放军国防科学技术大学 | Non-water-based magnetorheological polishing solution and preparation method thereof |
| CN104017503B (en) * | 2014-06-25 | 2016-05-18 | 中国人民解放军国防科学技术大学 | Non-water-base magnetic rheology polishing liquid and preparation method thereof |
| CN107418654A (en) * | 2017-06-05 | 2017-12-01 | 上海烯古能源科技有限公司 | A kind of graphene lubricant oil composite and preparation method and application |
| CN107418654B (en) * | 2017-06-05 | 2020-06-19 | 上海烯古能源科技有限公司 | Graphene lubricating oil composition and preparation method and application thereof |
| CN111623072A (en) * | 2020-06-09 | 2020-09-04 | 湖南大学 | Fluid damper |
| CN113027974A (en) * | 2021-02-26 | 2021-06-25 | 上海理工大学 | Multi-mode magneto-rheological shear thickening liquid damper |
| CN113444564A (en) * | 2021-06-28 | 2021-09-28 | 陈进操 | Modified magnetic particles suitable for large-scale production, magnetorheological fluid, and preparation method and application thereof |
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Application publication date: 20130724 |