CN108148655A - A kind of anti-settling ER fluid and its control method - Google Patents
A kind of anti-settling ER fluid and its control method Download PDFInfo
- Publication number
- CN108148655A CN108148655A CN201711220793.8A CN201711220793A CN108148655A CN 108148655 A CN108148655 A CN 108148655A CN 201711220793 A CN201711220793 A CN 201711220793A CN 108148655 A CN108148655 A CN 108148655A
- Authority
- CN
- China
- Prior art keywords
- fluid
- settling
- particle
- base fluid
- additive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000012530 fluid Substances 0.000 title claims abstract description 85
- 238000000034 method Methods 0.000 title claims description 14
- 239000002245 particle Substances 0.000 claims abstract description 107
- 239000004094 surface-active agent Substances 0.000 claims abstract description 29
- 238000004062 sedimentation Methods 0.000 claims abstract description 27
- 229920002545 silicone oil Polymers 0.000 claims abstract description 24
- 239000000654 additive Substances 0.000 claims abstract description 19
- 230000005684 electric field Effects 0.000 claims abstract description 19
- 239000012188 paraffin wax Substances 0.000 claims abstract description 19
- 230000000996 additive effect Effects 0.000 claims abstract description 17
- 125000000524 functional group Chemical group 0.000 claims abstract description 9
- 239000007788 liquid Substances 0.000 claims abstract description 7
- 230000009471 action Effects 0.000 claims abstract description 6
- 238000003860 storage Methods 0.000 claims abstract description 5
- 238000000518 rheometry Methods 0.000 claims abstract description 4
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 25
- 239000004202 carbamide Substances 0.000 claims description 25
- 229940008099 dimethicone Drugs 0.000 claims description 16
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 16
- 235000013870 dimethyl polysiloxane Nutrition 0.000 claims description 16
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 16
- HFQQZARZPUDIFP-UHFFFAOYSA-M sodium;2-dodecylbenzenesulfonate Chemical compound [Na+].CCCCCCCCCCCCC1=CC=CC=C1S([O-])(=O)=O HFQQZARZPUDIFP-UHFFFAOYSA-M 0.000 claims description 15
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 238000013329 compounding Methods 0.000 claims description 9
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium(II) oxide Chemical compound [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 9
- 235000011187 glycerol Nutrition 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims 1
- 150000008107 benzenesulfonic acids Chemical class 0.000 claims 1
- 230000005611 electricity Effects 0.000 claims 1
- 239000003921 oil Substances 0.000 claims 1
- ABTOQLMXBSRXSM-UHFFFAOYSA-N silicon tetrafluoride Chemical compound F[Si](F)(F)F ABTOQLMXBSRXSM-UHFFFAOYSA-N 0.000 claims 1
- 229910052708 sodium Inorganic materials 0.000 claims 1
- 239000011734 sodium Substances 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 6
- 239000000725 suspension Substances 0.000 abstract description 6
- 239000004615 ingredient Substances 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000007792 addition Methods 0.000 description 16
- 230000000694 effects Effects 0.000 description 11
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 6
- 230000008859 change Effects 0.000 description 6
- 239000001257 hydrogen Substances 0.000 description 6
- 229910052739 hydrogen Inorganic materials 0.000 description 6
- 230000005484 gravity Effects 0.000 description 5
- -1 methyl hydrogen Chemical compound 0.000 description 5
- 239000011859 microparticle Substances 0.000 description 4
- 239000012071 phase Substances 0.000 description 4
- 238000001556 precipitation Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000002270 dispersing agent Substances 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 238000011068 loading method Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 239000003381 stabilizer Substances 0.000 description 3
- KPCIOIGWWOUDTB-UHFFFAOYSA-N [Sr].NC1=CC=CC=C1 Chemical compound [Sr].NC1=CC=CC=C1 KPCIOIGWWOUDTB-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 235000019256 formaldehyde Nutrition 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 229910052712 strontium Inorganic materials 0.000 description 2
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000004931 aggregating effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 206010016256 fatigue Diseases 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- WLLBRPIRQIWHSI-UHFFFAOYSA-N oxotitanium propane-1,2,3-triol Chemical compound [Ti]=O.OCC(O)CO WLLBRPIRQIWHSI-UHFFFAOYSA-N 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 238000001935 peptisation Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007614 solvation Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 239000013008 thixotropic agent Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M167/00—Lubricating compositions characterised by the additive being a mixture of a macromolecular compound, a non-macromolecular compound and a compound of unknown or incompletely defined constitution, each of these compounds being essential
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M171/00—Lubricating compositions characterised by purely physical criteria, e.g. containing as base-material, thickener or additive, ingredients which are characterised exclusively by their numerically specified physical properties, i.e. containing ingredients which are physically well-defined but for which the chemical nature is either unspecified or only very vaguely indicated
- C10M171/001—Electrorheological fluids; smart fluids
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/06—Metal compounds
- C10M2201/062—Oxides; Hydroxides; Carbonates or bicarbonates
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2211/00—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions
- C10M2211/08—Halogenated waxes
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/10—Amides of carbonic or haloformic acids
- C10M2215/102—Ureas; Semicarbazides; Allophanates
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
- C10M2219/044—Sulfonic acids, Derivatives thereof, e.g. neutral salts
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
- C10M2229/04—Siloxanes with specific structure
- C10M2229/041—Siloxanes with specific structure containing aliphatic substituents
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
- C10M2229/04—Siloxanes with specific structure
- C10M2229/05—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon
- C10M2229/051—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon containing halogen
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/04—Detergent property or dispersant property
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/14—Electric or magnetic purposes
- C10N2040/16—Dielectric; Insulating oil or insulators
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Lubricants (AREA)
Abstract
A kind of anti-settling ER fluid, it is characterised in that：The ER fluid includes disperse particles, base fluid and additive, and wherein disperse particles use titanyl system particle, base fluid to use fluorinated silicone oil, chlorinated paraffin, additive as the surfactant containing polar functional group.It is rationally designed from the molecular structure of disperse particles, base fluid and additive and optimizes ingredient and proportioning, design the suspension that density is big, chain length base fluid improves particle, improve resistance to settling, to contain the surfactant of polar functional group as additive, greatly improve electro rheological fluids intensity and resistance to settling, the ER fluid of high resistance to settling is obtained, 30 days sedimentation resistance stability >=99% can be reached；And one is added at the storage of rheology liquid can apply the device of electric field, by electric field action, thoroughly solve the problems, such as sedimentation.Present invention proportioning is reasonable, materials safety environmental protection, and the existing excellent electric current of ER fluid of invention becomes efficiency, and with good resistance to settling energy, have broad application prospects.
Description
Technical field
The invention belongs to ER fluid technical fields, are related to a kind of anti-settling ER fluid and its control method.
Background technology
ER fluid is a kind of important intellectual material, it be made of disperse particles, base fluid, surfactant etc. one
Kind suspension, has the quality of controlled change, yield stress, elasticity modulus change with the variation of extra electric field.Electric current becomes
Liquid has huge application prospect in fields such as vibration damping, machine driving, automatic control, electromechanical integration, micro-move devices.But due to making
With there is some shortcomings in the process, such as the sedimentation of particle, yield stress is not high, and abrasion of the particle to device, temperature effect is too
Difference leads to problems such as operation temperature area narrow, limits its extensive use.
Under electric field action, directed movement bunchy occurs ER fluid for particle.Giant current is that dispersed phase is a diameter of
Micron-sized dispersion, (density of particle is 2~8gcm to the high density difference between electrically conductive particles and mother liquor-3, the density of base fluid
Generally 1.0gcm-3Left and right), it is resolved that the giant current of long-term standing inherently generates a degree of sedimentation.It settles micro-
Grain has the trend for caking of reuniting, if do not limited this trend in the case where coating gravity and microparticle surfaces can act on
System, it will cause the caking of particle, so as to which giant current be made to lose rheological property.In addition, electrical particle is small, have
Very big surface energy after base fluid is added into, because adsorption acts on, has the trend of cohesion, conglomeration.To prevent and reducing
This phenomenon, usually adds in stabilizer wherein, these stabilizers are all macromolecular chains, they are adsorbed by polar head in particle
Surface, tail portion is close to each other between prevention particle as spring, so as to reduce sedimentation, improves stability.But to being at present
Only, the Rheology Mechanism of giant current is disclosed completely not yet, and electrical particle easily occurs serious after particularly long-term standing
It settles and forms lump or cake shape object, the problem of so as to lose using function, there are no being well solved, this is greatly limited
The application range and application effect of giant current device are made.
Due to density variation great disparity between the component of giant current, serious particle sedimentation is will appear after being long placed in.So as to
Substantially reduce the performance and stability of giant current.From Stokes laws：
V=2r2(ρ-ρ0)g/9η (2-1)
In formula：The sinking speed of v --- particle under the effect of gravity,
The diameter of r --- sphere,
The density of ρ --- sphere,
The density of ρ 0 --- base fluid,
G --- acceleration of gravity,
The apparent viscosity of η --- base fluid
The effective ways of sinking speed are reduced from the point of view of settling velocity equation, can be considered from the following aspects：
● the density contrast between base fluid and particle is reduced,
● reduce the diameter of polarisable particle,
● increase the apparent viscosity of base fluid,
Under the effect of gravity, reduce the grain size r of particle, increase the viscosities il of base fluid, particle sinking speed can be reduced.But
Experiment shows the reduction with particle diameter, and the rheological effect of giant current also gradually weakens or even basic disappearance.This explanation
Due to electrical diameter of particle can not reduce and particle and mother liquor between density contrast be giant current objective reality feature, lead
The sedimentation of electric particle, which is one, thoroughly to be solved the problems, such as.Therefore, stablize the evaluation index and research direction of giant current
It should not be whether electrical particle settles, and should how settle later state.
Analysis shows limitation particle caking and the effective means for improving its stability are to add in having for doses to stablize
With the high molecular polymer or thixotropic agent of thickening power.By surfactant treated electrically particle should have it is suitable
Anti-settling, reunion performance, according to the complexity of giant current redisperse, can be broadly divided into after the sedimentation of electrical particle soft
Sedimentation and caking sedimentation two states.Its Apparent settling rate of Soft settlement process is fast, forms the larger sediment of settling volume,
But stir after easily redisperse and become uniform system；Its Apparent settling rate of infall process of luming is slow, and settling volume is also small,
But hard accumulation precipitation can be generated, it is difficult to redisperse.It can be found that Soft settlement just with reference to the application requirement of giant current
It is pursuing a goal for the giant current that performance is stablized, therefore the forming feature for furtheing investigate Soft settlement is that giant current is ground
One of critical issue of system.The stability of giant current determines that can giant current be suitable for practical application, therefore, grinds
It is current urgent problem to send out a kind of anti-settling ER fluid.
Invention content
First technical problem to be solved by this invention is to provide a kind of reasonable science of proportioning, good combination property, stabilization
The good anti-settling ER fluid of property.
Second technical problem to be solved by this invention is to provide a kind of control method of anti-settling ER fluid, method
Simple easily to implement, effect is good.
Technical solution is used by the present invention solves above-mentioned first technical problem：A kind of anti-settling ER fluid,
It is characterized in that：The ER fluid includes disperse particles, base fluid and additive, and wherein disperse particles use titanium-oxygen system particle, base fluid
Using chlorinated paraffin, fluorinated silicone oil and dimethicone, the volume ratio of chlorinated paraffin, fluorinated silicone oil and dimethicone is 6~
10：50~80：14~40, additive is the surfactant containing polar functional group.
It is preferred that the titanium-content of the oxygen system particle in ER fluid accounts for mass percent 25~30%.
It is preferred that 30~35nm of grain size of the titanium-oxygen system particle, micro- using urea titanyl particle or glycerine titanyl
Grain.
Preferably, the fluorinated silicone oil, the viscosity of chlorinated paraffin are 400~600 × 10-3Pa.s。
Preferably, the surfactant uses neopelex, the addition of neopelex
It is 0.5~0.7 × 10-3Using urea and neopelex compounding agent, urea adds for mol/L or surfactant
Enter amount for 5.0~5.6wt%, the addition of neopelex is 0.5~0.7 × 10-3mol/L。
Further preferably, the surfactant is using urea and neopelex compounding agent, the addition of urea
5.3wt%, the addition of neopelex is 0.6 × 10-3mol/L。
Technical solution is used by the present invention solves above-mentioned second technical problem：A kind of above-mentioned anti-settling ER fluid
Control method, it is characterised in that：One is added at the storage of the ER fluid can apply the device of electric field, be made by electric field
With preventing its sedimentation.
It is preferred that electric field strength is at least more than 1kV/mm.
Finally, electric field strength is 1kV/mm~2kV/mm.
Compared with prior art, the advantage of the invention is that：It is reasonable from the molecular structure of disperse particles, base fluid and additive
It designs and optimizes ingredient and proportioning, design density is big, chain length base fluid improves the suspension of particle, resistance to settling is improved, to contain
The surfactant of polarized functional group greatly improves electro rheological fluids intensity and resistance to settling, obtains highly resistance as additive
The ER fluid of settleability can reach 30 days sedimentation resistance stability >=99%；And an energy is added at the storage of rheology liquid
Apply the device of electric field, by electric field action, thoroughly solve the problems, such as sedimentation.Present invention proportioning is reasonable, materials safety environmental protection,
The existing excellent electric current of ER fluid of invention becomes efficiency, and with good resistance to settling energy, have broad application prospects.
Description of the drawings
Fig. 1 is electro rheological fluids anti-settling rate versus time curve in embodiment provided by the invention；
Fig. 2 is different viscosities dimethicone giant current anti-settling rate and time curve；
Fig. 3 is different end group silicone oil giant current anti-settling rate and time curve；
Fig. 4 is influence curve of the SDBS additions to particle giant current yield strength；
Fig. 5 is the influence curve that urea and SDBS complex additives become the electric current of particle yield strength；
Fig. 6 is the pattern of giant current after SDBS is added in；
Fig. 7 is the sedimentation stability photo of different particle giant currents；
Fig. 8 is the settlement stability linearity curve of different particle giant currents.
Specific embodiment
The present invention is described in further detail below in conjunction with attached drawing embodiment.
A kind of anti-settling ER fluid, including disperse particles, base fluid and additive, wherein disperse particles use titanium-oxygen system
Particle, base fluid use chlorinated paraffin, fluorinated silicone oil and dimethicone, the body of chlorinated paraffin, fluorinated silicone oil and dimethicone
Product ratio is 6~10：50~80：14~40, additive is the surfactant containing polar functional group.
It is preferred that titanium-oxygen system particle selects glycerine titanyl particle or urea titanyl particle, titanium-oxygen system particle becomes in electric current
Content in liquid accounts for mass percent 20~50%, preferably 25~30%.30~35nm of grain size of titanium-oxygen system particle.
The viscosity of base fluid that preferred fluorinated silicone oil, chlorinated paraffin, dimethicone form is 400~600 × 10- 3Pa.s。
It is preferred that the surfactant uses neopelex, the addition of neopelex is 0.5
~0.7 × 10-3Using urea and neopelex compounding agent, the addition of urea is for mol/L or surfactant
5.0~5.6wt%, the addition of neopelex is 0.5~0.7 × 10-3mol/L。
Further preferably described surfactant uses urea and neopelex compounding agent, and the addition of urea is
5.3wt%, the addition of neopelex is 0.6 × 10-3mol/L。
The present invention is described in further detail below by the Research idea and experiment of the present invention：
Particle/base fluid difference in specific gravity, the wetability of particle, the properties such as molecular structure (chain length, functional group) of base fluid are to electric current
The resistance to settling of variant has larger impact.There is research by design and prepare nano-size dispersion phase particle, reduce particles specific weight,
Improve resistance to settling；Polar functional group helps to improve Electrorheological Activity, and surfactant molecule increases the profit of particle and base fluid
It is moist design and to prepare the surfactant containing polar functional group so as to improve stability, improve the wetting of particle and base fluid
Property and suspension, and generate the micel bridge of colloidal state between particle, particle made not precipitate and not flocculate, improve resistance to settling.
First, base fluid designs
Using different end group silicone oil as the anti-settling rate of titanium oxyoxalate giant current that base fluid is prepared change with time as
Shown in Fig. 1.As shown in Figure 1, methyl hydrogen giant current sedimentation stability is worst, and maximum settlement is basically reached in 2 days, resists
Sedimentation rate is only 35%, this is because the steric hindrance effect of end hydrogen-based is smaller, easily causes the reunion of particle, apparent grain size compared with
Greatly；Dimethicone end group is larger, and steric hindrance effect is larger, therefore the sedimentation of dimethicone giant current is relatively slow,
Sedimentation in 13 days is basicly stable, and anti-settling rate is 50%；Fluorinated silicone oil, chlorinated paraffin giant current sedimentation stability are best, and 20
Its anti-settling rate is maintained as 98% after it, this is because different fluorinated silicone oils, chlorinated paraffin are intermolecular due between terminal hydroxy group
Hydrogen bond action causes apparent chain length to increase, apparent viscosity increase, so as to hinder the sedimentation of particle.
Since the density variation of base fluid and electrical particle is big, the electrically conductive particles completed have been dispersed through it and have been settled often in trend
State, therefore, the giant current stood for a long time is easily lost due to the particle of sedimentation is agglomerated, lumpd using function,
This greatly limits the application ranges and application effect of giant current device.
The stability of fluorinated silicone oil, chlorinated paraffin, Methyl Hydrogen Polysiloxane Fluid and dimethicone is had studied, Fig. 3 is different ends
Base silicone oil giant current anti-settling rate and time changing curve, from the figure 3, it may be seen that Methyl Hydrogen Polysiloxane Fluid giant current sedimentation speed
Degree is quickly and sedimentation degree is larger, and anti-settling rate minimizes value 35% after 1 day.Fluorinated silicone oil, chlorinated paraffin giant electro-rheological
The anti-settling rate of body no longer changes after reaching 99.8% at second day.
Therefore fluorinated silicone oil, chlorinated paraffin is selected to add main body and dimethicone composition base fluid as base fluid.
2nd, additive selects
Additive is the important composition ingredient of electrorheological fluid.Disperse particles are suspended in the huge electric current formed in decentralized medium
Variant is two-phase system, since the two density can not possibly exactly match, disperse particles is caused easily to settle, to improve giant electro-rheological
The stability and its ER properties of body, frequently with method be add in surfactant.Surfactant has solubilising, profit
Wet, infiltration and dispersion and deflocculation.Surfactant is other than the stability of enhancing suspension, moreover it is possible to electric current be become and imitated
There should be facilitation.Surfactant can improve between disperse particles and decentralized medium the wetability at " liquid one is solid " interface, increase
Add the compatibility between disperse particles and decentralized medium, play the role of stabilizer.Surfactant can change particle simultaneously
The dielectric and conduction property on surface under electric field action, show as Electrorheological Activity raising, and shear stress values increase.
Giant current is two-phase or multiphase a kind of suspension system, only when solia particle is evenly dispersed in base fluid,
And giant current just has excellent working performance when its uniformity coefficient does not change with time, but due to electrical
Particle is typically in aggregating state before being added in liquid phase, under the mechanical forces such as friction and impact, particle surface area
A large amount of positive charge or negative electrical charge are tired out, the reunion of particle, the surface energy of micron order particle are attracted each other and caused to these charges
Height is in an unsure state, and specifically can drop low-surface-energy by reuniting, simultaneously because the small model caused between particle of particle
De Huali can not ignore, and hydrogen bond between particle and the wet bridge of absorption also have and make the tendency reunited between particle.Therefore, it is huge
Surfactant is essential addO-on therapy in electro rheological fluids, and at present, there are many kinds of surfactants, and process is more now intended
SDBS is selected as additive.
Surfactant is made of the entirely different lipophilic group of property and hydrophilic group, and hydrophilic group is adsorbed in electric polarization particle
Surface, and lipophilic group extends in carrier fluid and does hot swing, when the electric polarization particle for adsorbing hydrophilic group is close to each other, oleophylic
The swing of base, which is obstructed between lipophilic group and hydrophilic group, generates repulsive interaction, close to each other between particle so as to hinder.Table
It, can be with after it is unfolded in the base fluids such as silicone oil there are the hydrophilic group of a long poly chain in the active additive molecular structure of face
A hydrophilic group adsorption group using oxygen atom as absorption point is generated, is tightly adsorbed on the surface of particle.Activating agent is to particle
Cladding, can not only prevent the close contact of microparticle surfaces, but also because the molecular weight of activating agent is larger, chain is longer, can compare appearance
Change places mutual " tangling " form weak binding power between particle, i.e. thixotroping power together.It is coated on the surfactant of microparticle surfaces
The oxidation of particle can be prevented, particle coagulation caused by Van der Waals for is overcome, weakens electrostatic attraction, changes microparticle surfaces
Property, make particle and base fluid one integrated mass.When selecting surfactant, it is desirable that surfactant one end can be adsorbed in particle table
Face, forms very strong chemical bond, and the other end can increase viscoplasticity with base fluid solvation, increase lubricity, reduce abrasion.
Fig. 4, Fig. 5 are respectively the multiple additives such as neopelex (SDBS), urea (Urea) and SDBS compoundings
To the affecting laws of the electric rheological effect of particle, the addition of SDBS as seen from the figure makes giant current performance obtain larger raising,
Optimal addn is 0.6 × 10-3moll-1.Urea makes ER properties be further enhanced with the compound additions of SDBS, most
By adjusting the addition of urea under good SDBS additions, to determine best compound addition, it is best as can be seen from Figure 5
Addition is urea 5.3%, SDBS 0.6 × 10-3moll-1, Fig. 6 is the pattern of giant current after SDBS is added in, and can be seen
Introducing to additive can greatly improve the stability of giant current.
3rd, disperse particles
Fig. 7 is the sedimentation stability photo of different particle giant currents, pure strontium titanyl, aniline strontium titanyl, glycerine titanium
Oxygen giant current uses 500*10-3Pa.s silicone oil prepares giant current mass fraction 30%, the glycerine after placing 6 days
Titanyl giant current occurs without sedimentation, and the sedimentation stability of pure strontium titanyl, aniline strontium titanyl is shown in Fig. 8.Therefore selection glycerine
Titanyl particle because urea titanyl particle performance is sufficiently close to glycerine titanyl particle, can also be used instead.
In addition, in order to thoroughly solve ER fluid settlement issues, it is subject to electric field at ER fluid storage, prevents it heavy
Drop, and during exercise electric current become night will not settle, thoroughly solve ER fluid settlement issues.
Embodiment 1
A) base fluid
Base fluid component：Chlorinated paraffin (6v%), fluorinated silicone oil (70v%) and dimethicone (24v%) are uniformly mixed
To compounding base fluid；
B) particle：TiO2/ Urea particles；Mass percent 28%
C) dispersant：0.5×10-3mol/L SDBS
Precipitation is had no when loading electric field 2kV/mm within 30th.
Embodiment 2
A) preparation of base fluid
Chlorinated paraffin (6v%), fluorinated silicone oil (80v%) and dimethicone (14v%) are uniformly mixed and obtain compounding base
Liquid；
B) particle：TiO2/ Urea particles, mass percent 28%；
C) dispersant：0.5×10-3mol/L SDBS
D) precipitation is had no within 30th when loading electric field 1kV/mm.
Embodiment 3
A) preparation of base fluid
Chlorinated paraffin (10v%), fluorinated silicone oil (50v%) and dimethicone (40v%) are uniformly mixed and answered
With base fluid；
B) particle：TiO2/ Urea particles, mass percent 28%；
C) dispersant：0.5×10-3mol/L SDBS
D) precipitation is had no within 30th when loading electric field 1.5kV/mm.
30~35nm of grain size of above-mentioned titanium-oxygen system particle.
It is above-mentioned state fluorinated silicone oil, chlorinated paraffin, dimethicone composition base fluid viscosity be 400~600 × 10- 3Pa.s。
Finally it should be noted that：Above example only illustrates technical scheme of the present invention, rather than its limitations；Although reference
The present invention is described in detail in previous embodiment, it will be understood by those of ordinary skill in the art that：It still can be right
Technical solution recorded in foregoing embodiments modifies or carries out equivalent replacement to which part technical characteristic；And this
A little modifications are replaced, the spirit and model of various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution
It encloses.
Claims (9)
1. a kind of anti-settling ER fluid, it is characterised in that：The ER fluid includes disperse particles, base fluid and additive, wherein
Disperse particles use titanium-oxygen system particle, and base fluid uses chlorinated paraffin, fluorinated silicone oil and dimethicone, chlorinated paraffin, silicon fluoride
The volume ratio of oil and dimethicone is 6~10：50~80：14~40, additive is the surface-active containing polar functional group
Agent.
2. anti-settling ER fluid according to claim 1, it is characterised in that：Titanium-oxygen system particle is in ER fluid
Content accounts for mass percent 25~30%.
3. anti-settling ER fluid according to claim 2, it is characterised in that：30~35nm of grain size of titanium-oxygen system particle,
Using urea titanyl particle or glycerine titanyl particle.
4. anti-settling ER fluid according to claim 1, it is characterised in that：The chlorinated paraffin, fluorinated silicone oil and two
The viscosity of the base fluid of methyl-silicone oil composition is 400~600 × 10-3Pa.s。
5. anti-settling ER fluid according to claim 1, it is characterised in that：The surfactant uses dodecyl
Benzene sulfonic acid sodium salt, the addition of neopelex is 0.3~0.7 × 10-3Mol/L or surfactant use urea
With neopelex compounding agent, the addition of urea is 5.0~5.6wt%, the addition of neopelex
It is 0.5~0.7 × 10-3mol/L。
6. anti-settling ER fluid according to claim 5, it is characterised in that：The surfactant uses urea and ten
Dialkyl benzene sulfonic acids sodium compounding agent, the addition of urea is 5.3wt%, and the addition of neopelex is 0.6 × 10- 3mol/L。
7. a kind of control method of the arbitrary anti-settling ER fluid of claim 1~6, it is characterised in that：In the electricity
One is added at the storage of rheology liquid can apply the device of electric field, its sedimentation is prevented by electric field action.
8. the control method of anti-settling ER fluid according to claim 7, it is characterised in that：Electric field strength is at least
More than 1kV/mm.
9. the control method of anti-settling ER fluid according to claim 8, it is characterised in that：Electric field strength is 1kV/mm
~2kV/mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711220793.8A CN108148655A (en) | 2017-11-29 | 2017-11-29 | A kind of anti-settling ER fluid and its control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711220793.8A CN108148655A (en) | 2017-11-29 | 2017-11-29 | A kind of anti-settling ER fluid and its control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108148655A true CN108148655A (en) | 2018-06-12 |
Family
ID=62469037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711220793.8A Pending CN108148655A (en) | 2017-11-29 | 2017-11-29 | A kind of anti-settling ER fluid and its control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108148655A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109321328A (en) * | 2018-09-27 | 2019-02-12 | 安徽省华腾农业科技有限公司 | A kind of ER fluid and preparation method thereof |
| CN110878225A (en) * | 2018-09-06 | 2020-03-13 | 宁波麦维科技有限公司 | Continuous phase liquid for giant electrorheological fluid and giant electrorheological fluid |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0625566A1 (en) * | 1993-05-21 | 1994-11-23 | NIPPON OIL Co. Ltd. | Electrorheological fluid containing carbonaceous particles |
| CN101967420A (en) * | 2010-10-20 | 2011-02-09 | 中国兵器工业第五二研究所 | Electrorheological fluid of high-dielectric constant CaCu3Ti4O12 hybrid-modified particles and preparation method thereof |
| CN104130838A (en) * | 2014-07-04 | 2014-11-05 | 中国兵器科学研究院宁波分院 | Complex formulation electrorheological fluid and preparation method thereof |
-
2017
- 2017-11-29 CN CN201711220793.8A patent/CN108148655A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0625566A1 (en) * | 1993-05-21 | 1994-11-23 | NIPPON OIL Co. Ltd. | Electrorheological fluid containing carbonaceous particles |
| CN101967420A (en) * | 2010-10-20 | 2011-02-09 | 中国兵器工业第五二研究所 | Electrorheological fluid of high-dielectric constant CaCu3Ti4O12 hybrid-modified particles and preparation method thereof |
| CN104130838A (en) * | 2014-07-04 | 2014-11-05 | 中国兵器科学研究院宁波分院 | Complex formulation electrorheological fluid and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 齐宝森等: "《新型材料及其应用》", 30 September 2007, 哈尔滨工业大学出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110878225A (en) * | 2018-09-06 | 2020-03-13 | 宁波麦维科技有限公司 | Continuous phase liquid for giant electrorheological fluid and giant electrorheological fluid |
| CN110878225B (en) * | 2018-09-06 | 2022-04-26 | 宁波麦维科技有限公司 | Continuous phase liquid for giant electrorheological fluid and giant electrorheological fluid |
| CN109321328A (en) * | 2018-09-27 | 2019-02-12 | 安徽省华腾农业科技有限公司 | A kind of ER fluid and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Sharma et al. | Silica nanofluids in polyacrylamide with and without surfactant: Viscosity, surface tension, and interfacial tension with liquid paraffin | |
| JP6130858B2 (en) | Electrophoretic display fluid | |
| US10190068B2 (en) | Giant electrorheological fluid surfactant additives | |
| JP6108319B2 (en) | Electroviscous composition | |
| CN108148655A (en) | A kind of anti-settling ER fluid and its control method | |
| CN106571206A (en) | Micro-nano magnetorheological fluid and preparation method thereof | |
| US6645403B1 (en) | Multiphase electrorheological fluid | |
| CN101457172A (en) | Stabilizing type magnetic rheological fluid | |
| CN108300555A (en) | Giant electro-rheological liquid and preparation method thereof | |
| CN109321328B (en) | Electrorheological fluid and preparation method thereof | |
| JP2005501959A (en) | Magnetorheological fluid with additive package | |
| DE69433420T2 (en) | Electrorheological fluid composition | |
| EP0432601A1 (en) | Electroviscous fluids based on dispersed polyethers | |
| JP4683185B2 (en) | Magnetorheological fluid | |
| CN106753722B (en) | Giant electrorheological fluid and preparation method thereof | |
| Cetin et al. | The negative and positive electrorheological behavior and vibration damping characteristics of colemanite and polyindene/colemanite conducting composite | |
| Ma et al. | Effect of carrier liquid on electrorheological performance and stability of oxalate group-modified TiO2 suspensions | |
| KR100593483B1 (en) | Electro-fluidic fluid comprising polyaniline / titanium dioxide composite as conductive particles and method for producing same | |
| DE3912888C2 (en) | ||
| Hu et al. | Electrorheological polishing performance of cerium-doped titanium dioxide particles | |
| Hirose et al. | Electrorheology of suspensions of poly (ethylene glycol)/poly (vinyl acetate) blend particles | |
| KR100734333B1 (en) | Magnetorheological fluid having good dispersibility and re-dispersibility | |
| TWI516610B (en) | Magnetorheological fluid composition and method for forming the same | |
| CN110878225B (en) | Continuous phase liquid for giant electrorheological fluid and giant electrorheological fluid | |
| KR20100081799A (en) | Preparing method of magnetic composite particles using polyvinyl butyral and carbonyl iron and magnetorheological fluid comprising the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180612 |
|
| RJ01 | Rejection of invention patent application after publication |