CN105884088B - A kind of recovery processing agent of magnetorheological fluid and preparation method thereof that lauric acid is modified - Google Patents
A kind of recovery processing agent of magnetorheological fluid and preparation method thereof that lauric acid is modified Download PDFInfo
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- CN105884088B CN105884088B CN201610495215.4A CN201610495215A CN105884088B CN 105884088 B CN105884088 B CN 105884088B CN 201610495215 A CN201610495215 A CN 201610495215A CN 105884088 B CN105884088 B CN 105884088B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/44—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of magnetic liquids, e.g. ferrofluids
- H01F1/447—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of magnetic liquids, e.g. ferrofluids characterised by magnetoviscosity, e.g. magnetorheological, magnetothixotropic, magnetodilatant liquids
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/286—Treatment of water, waste water, or sewage by sorption using natural organic sorbents or derivatives thereof
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
- C02F1/488—Treatment of water, waste water, or sewage with magnetic or electric fields for separation of magnetic materials, e.g. magnetic flocculation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5263—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using natural chemical compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/04—Surfactants, used as part of a formulation or alone
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- Environmental & Geological Engineering (AREA)
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Abstract
The invention discloses a kind of modified recovery processing agent of magnetorheological fluid and preparation method thereof of lauric acid, belong to magnetic devil liquor recovery processing technology field.The constituent of recovery processing agent of the invention and the mass fraction of each component are (100 parts of meters): 15~20 parts of corncob, 15~20 parts of peanut shell, 5~8 parts of neopelex, remaining is water.The present invention utilizes the cellulose of biological material, the esterification that carboxyl on the hydroxyl and lauric acid contained on hemicellulose and lignin occurs, form the alkyl chain of ester group connection lauric acid itself, enhance lipophilic-hydrophobic property, simultaneously because its pore-creating acts on, further increase the micropore of biological material, and improve porosity, the main discrete particles in magnetorheological fluid are not only made to sink, and because of the suction-operated of biological material, Surfactant and additive absorption, the other compositions in magnetorheological fluid are further separated, " treatment of wastes with processes of wastes against one another " is achieved the effect that.
Description
Technical field
The invention belongs to magnetic devil liquor recovery processing technology fields, more specifically to a kind of modified magnetic of lauric acid
Recovery processing agent of rheology liquid and preparation method thereof.
Background technique
Magnetorheological fluid (Magnetorheological Fluid, abbreviation MR fluid) belongs to controlled fluid, is in intellectual material
Study more active one.Magnetorheological fluid is by high magnetic permeability, low hysteresis small soft magnetic particles and non-magnetic liquid
The suspended substance that body mixes.Magnetorheological fluid is in widespread attention with its distinctive magnetic rheology effect.Magnetorheological fluid is by micro-
The ferromagnetic particle of rice magnitude is distributed in the suspension formed in non magnetic liquid.Under the action of externally-applied magnetic field, magnetorheological fluid
Performance (such as rheology, magnetics, mechanics, calorifics, optics performance) change rapidly, be converted by original sticky fluidised form
Class solid-state, and there is certain yield shear stress.The response time of magnetic rheology effect is very short, generally millisecond magnitude, and
The conversion of mushy stage asked has invertibity, and after external magnetic field removes, mobility can be restored.The solidification of magnetorheological fluid is strong and weak
It can be increased by the control of externally-applied magnetic field, shear stress with the increase of magnetic field strength, until reach magnetic saturation state, except this it
Outside, magnetorheological fluid also has the characteristics that energy consumption is lower, preparation is convenient, temperature applicable range is not wide, easy to pollute, automobile, machinery,
The fields such as building, aviation are applied widely, and are considered one of the intellectual material of most future.Magnetorheological fluid is mainly by following
Three parts composition: (1) as the main discrete particles of dispersed phase；(2) basal liquid as dispersed phase carrier, also known as carrier fluid；(3) it is
The additive for improving rheomagnetic energy and being added.Wherein main discrete particles are mainly made of magnetic-particle, and size mainly has micron
And nanoscale.Magnetic-particle mainly has Fe3O4、Fe3N, the particles such as Fe, Co, Ni or Fe, Co, Ni alloy, wherein magnetic saturation is most
Big particle is ferrocobalt, while further including some other namagnetic substance, such as polystyrene or silica granule.For carrying
Liquid, including non magnetic carrier fluid and magnetic carrier fluid, non magnetic carrier fluid mainly has silicone oil, mineral oil, synthetic oil, water and ethylene glycol at present
Deng；Magnetic carrier fluid is mainly the lesser flowing molten iron body of grain diameter, be mainly used for dispersion receive, the particle of micron level.
To ensure the suspension stability of particle and increasing the rheologic behavio(u)r of entire magnetorheological fluid, generally require using addition
Various surfactants or stabilizer is such as added in agent, prevents particle precipitating and irreversible reunion.Surfactant is usually
The oligomer of the different structure composition of both properties of hydrophilic group and lipophilic group, hydrophilic group are adsorbed on the surface of suspended particulate, and
The lipophilic group of one end is then diffused in nonpolarity or polar carrier fluid as " tip of a whip ".Suspended particle absorbing control surfactant
After, due to " tip of a whip " mutually winding and repel, on the one hand will increase the volume of particle, reduces them and attract each other the machine of collision
Meeting；On the other hand steric hindrance can be formed inside carrier fluid, formed one interaction three-dimensional net structure, thus reduce by
The sedimentation of the particle caused by the density contrast of particle and carrier fluid.In addition, the addition of some additives can also improve base fluid and consolidate
" wetting " property of body particle surface keeps the bonding between particle few to reduce automatic cohesion.Lauric acid is more commonly used one
Kind additive.For example, Chinese Patent Application No. is 201510113811.7, data of publication of application is the patent on July 15th, 2015
File discloses a kind of magnetorheological fluid and preparation method thereof with high conductivity, includes the following components'mass percentage:
39.8%~90% carrier fluid, 0.2%~2% surfactant, 8%~60% Silver-coated Carbonyl Iron Powder；The invention prepares silver-plated carbonyl
Base iron powder, using the method for chemical plating；The method that the invention prepares magnetorheological fluid is, by 39.8%~90% carrier fluid, 0.2%~
2% surfactant with mixing machine after mixing evenly, be added 8%~60% Silver-coated Carbonyl Iron Powder, by grinding device grinding 1~
4 hours, it is prepared into magnetorheological fluid, wherein surfactant is oleic acid, in neopelex, stearic acid, lauric acid
One or more combination.
After long-time uses magnetorheological fluid, the consume of magnetisable material and the denaturation of carrier fluid and additive lead to it
The indexs dramatic decrease such as mechanical property, magnetic performance, response time, the most common method is replacement magnetorheological fluid at this time, will be former
There is the discarding of degradation magnetorheological fluid.Because containing the carrier fluid of a large amount of ferromagnetic material, multiple compounds matter composition in magnetorheological fluid,
Complicated component is easy to cause damages to environment.So far, non-about the device or method being recycled to magnetorheological fluid
Often few, Chinese Patent Application No. 201511025405.1, data of publication of application is that the patent application document on March 23rd, 2016 is public
Opened a kind of magnetorheological fluid recyclable device and its control method and component manufacturing method, it include inlet stop valve, upper housing, under
Shell, electro static filtering plate, upper adsorption tube, lower adsorption tube, ribbed pipe, coil, heater, blender, pump, return pipe, outlet cut-off
Valve；The upper housing and lower case is bolted, and sealing ring, the inlet stop valve setting is arranged in joint place
On upper housing；The invention simultaneously additionally provides the manufacturing method of its control method and critical component, which passes through electrostatic mistake
The preliminary treatment to mixed liquor is completed in the filtering of filter plate, suction-operated, in recycling adsorption tube, lower adsorption tube and ribbed pipe adsorb into
One step completes the processing to mixed liquor, and adds heater, blender and the circulatory system, reaches magnetisable material and solvent is thorough
Isolated purpose.But the recyclable device of the invention can only carry out preliminary magnetisable material separation to magnetorheological fluid, cannot reach
Really recovery processing and utilization are still very big to the pollution of environment.
Therefore it is badly in need of developing corresponding recovery and treatment method, discarded magnetorheological fluid is handled, can not only be reduced
Pollution to environment, and related substances therein can be recycled, save the energy.
Summary of the invention
1. to solve the problems, such as
The modified magnetorheological fluid of oleic acid can not be really recycled, there are secondary pollution problems for the prior art, this
Invention provides a kind of lauric acid the modified recovery processing agent of magnetorheological fluid and preparation method thereof, using inorganic agent by magnetorheological fluid
In lauric acid performance change, its lipophilic-hydrophobic property is improved, so that the effect between surfactant and main discrete particles is significantly
Weaken, causes the cementation in magnetorheological fluid between main discrete particles and carrier fluid to be eliminated, so that main discrete particles energy
Enough sedimentations rapidly under the effect of gravity, separate winner's discrete particles and carrier fluid, are the subsequent recovery benefit of magnetorheological fluid
With providing the foundation.
The present invention is to carry out preliminary treatment to magnetorheological fluid, is to cut the connection relationship between main discrete particles and carrier fluid
It is disconnected, it is ready for separation in next step, in next step treatment process, so that it may the effects of utilizing magnetic absorption, by main dispersion
Particle and carrier fluid thoroughly separate.
There is presently no the inorganic agent recycled to magnetorheological fluid, only document discloses the processing handled it
Device (number of patent application are as follows: 201511025405.1), and device only plays the role of to magnetorheological fluid post-processing, first
Phase needs to increase inorganic agent, and main discrete particles and carrier fluid is allowed to separate, and then could utilize the device in open source literature
(201511025405.1) or other devices carry out post-processing, main discrete particles are adsorbed, to achieve the purpose that separation.
2. technical solution
To solve the above-mentioned problems, the technical solution adopted in the present invention is as follows:
A kind of recovery processing agent for the magnetorheological fluid that lauric acid is modified, the mass fraction of constituent and each component are as follows:
It is in terms of 100 parts by total number, 15~20 parts of corncob, 15~20 parts of peanut shell, 5~8 parts of neopelex, remaining is
Deionized water.
Further, the mass fraction of constituent and each component are as follows: by total number be 100 parts in terms of, corncob 18
Part, 18 parts of peanut shell, 6 parts of neopelex, remaining is deionized water.
It further, further include 2~5 parts of methanol.
A kind of preparation method of the recovery processing agent of the modified magnetorheological fluid of above-mentioned lauric acid, the steps include:
(1) corncob and peanut shell are crushed respectively, sieve takes smashed maize cob meal and peanut shell powder；
(2) maize cob meal and peanut shell powder are mixed in proportion；
(3) neopelex is dissolved in deionized water, and is heated to 20~30 DEG C, keep the temperature 20min；
(4) it will be stirred in solution that the mixture of maize cob meal and peanut shell powder pours into step (3), heat simultaneously
To 40~50 DEG C.
Further, screening partial size is 4~10mm maize cob meal and peanut shell powder in the step (1).
Further, sodium dodecyl benzene sulfonate aqueous solution is heated to 30 DEG C in the step (3), keeps the temperature 20min.
Further, mixing speed is 200~300r/min, mixing time 10min in the step (4).
Further, the mixing speed in the step (4) is 250r/min, and heating temperature is 45 DEG C.
Further, further include step (5), i.e., continuously add after the step (4) 2~5 parts of methanol carry out it is uniformly mixed.
3. beneficial effect
Compared with the prior art, the invention has the benefit that
(1) present invention improves its lipophilic-hydrophobic property using inorganic agent by the lauric acid performance change in magnetorheological fluid, so that
Effect between surfactant and main discrete particles weakens significantly, causes in magnetorheological fluid between main discrete particles and carrier fluid
Cementation is eliminated, so that main discrete particles can settle rapidly under the effect of gravity, makes winner's dispersion
Grain is separated with carrier fluid, is provided the foundation for the subsequent recovery utilization of magnetorheological fluid；
(2) present invention utilizes the hydroxyl and lauric acid contained on the cellulose, hemicellulose and lignin of biological material
On the esterification that occurs of the carboxyl that contains, form the alkyl chain of ester group link lauric acid itself, enhance lipophilic-hydrophobic property, together
When due to its pore-creating act on, further increase the micropore of biological material, and improve porosity, not only make magnetorheological fluid
In main discrete particles sink, and because of the suction-operated of biological material, by other kinds of surfactant and additive
Absorption, has further separated the other compositions in magnetorheological fluid；
(3) ingredient of the neopelex as inorganic agent is used in the present invention, due to general in magnetorheological fluid waste liquid
Store-through can save cost in neopelex；Neopelex and load in magnetorheological fluid waste liquid simultaneously
Liquid, surfactant, additive etc. there are false relation, can be improved after reaction biological material to carrier fluid, surfactant,
The suction-operated of additive etc.；
(4) inorganic agent ingredient of the invention is simple, is easy preparation, low in cost using corncob and peanut shell, and benefit
Waste material is recycled with waste material, has been achieved the effect that " treatment of wastes with processes of wastes against one another ", while when handling magnetorheological fluid, reaction condition
Simply, high treating effect；
(5) inorganic agent provided by the invention is to carry out preliminary treatment to magnetorheological fluid, be by main discrete particles and carrier fluid it
Between connection relationship cutting, be ready for separation in next step, in next step treatment process, so that it may using magnetic absorption etc.
Effect thoroughly separates main discrete particles and carrier fluid；There is presently no the inorganic agents recycled specifically for magnetorheological fluid, only
There is document to disclose the processing unit handled it, and device only plays the role of to magnetorheological fluid post-processing, such as
If the treatment effect of fruit early period is bad, device is difficult to play the effect of its separation, only according to method provided in the present invention,
It allows main discrete particles and carrier fluid to separate using inorganic agent in the early stage, then could utilize the device in open source literature
(201511025405.1) or other devices carry out post-processing, and main discrete particles are adsorbed, thus achieve the purpose that separation, this
Inorganic agent in invention can make the separation degree of main discrete particles and carrier fluid be up to 98%.
Specific embodiment
The present invention is further described below combined with specific embodiments below.
Embodiment 1
The magnetorheological fluid handled in the present embodiment is main point using lauric acid as the magnetorheological fluid of surfactant main component
Scattered seed is hydroxy iron powder, magnetic saturation 2.1T, and carrier fluid is mineral oil, magnetorheological fluid waste liquid to be processed in the present embodiment
It is in its solution after using more than its shear fatigue service life, the variable quantity of its zero-shear viscosity and adjustable multiple is being examined at this time
It is in the process more than ± 10%；The constituent for the recovery processing agent that the present embodiment uses and the mass fraction of each component are as follows: with
Total number is 100 parts of meters, and corncob is 18 parts, and 18 parts of peanut shell, 6 parts of neopelex, 3 parts of methanol, remaining is to go
Ionized water, it is specific the preparation method comprises the following steps:
(1) corncob and peanut shell are crushed respectively, it is the maize cob meal and peanut of 4~10mm that sieve, which takes partial size, respectively
Shell powder；
(2) maize cob meal and peanut shell powder are mixed in proportion；
(3) neopelex is dissolved in deionized water, and is heated to 20 DEG C, keep the temperature 20min；
(4) mixture of maize cob meal and peanut shell powder is poured into deionized water and is stirred, mixing speed 250r/
Min, while 45 DEG C are heated to, stir 10min.
The recovery processing agent performance being prepared according to the method described above in the present embodiment is stablized, and is sealed under the conditions of being protected from light
Still there is good processing capacity after 2 years.
The application method of above-mentioned recovery processing agent are as follows:
(1) recovery processing agent is added in magnetorheological fluid, the mass ratio of inorganic agent and magnetorheological fluid is 1:200, heating
To 40 DEG C；
(2) mixed liquor is stirred, mixing speed 2000r/min, stirs 2h；
(3) mixed liquor after stirring is heated to 70 DEG C, the concentrated sulfuric acid that mass fraction is 80%, the quality of the concentrated sulfuric acid is added
The 2% of mixed solution gross mass is accounted for, 6h is kept the temperature；
(4) deposit after reaction is rinsed with clear water.
Magnetorheological fluid is handled using the inorganic agent in the present embodiment, it then will be in solution using magnetic absorption effect
Main discrete particles and carrier fluid separation, the separation degree of main discrete particles and carrier fluid is up to 92% in the present embodiment.It is recycled agent
In methanol not only can increase the stability of solution, it is often more important that, when being recycled to magnetorheological fluid, methanol can be bright
The aobvious rate of recovery for improving magnetorheological fluid makes the treatment effeciency for being recycled agent improve 15% or so.
Embodiment 2
The magnetorheological fluid handled in the present embodiment is main point using lauric acid as the magnetorheological fluid of surfactant main component
Scattered seed is hydroxy iron powder, magnetic saturation 2.1T, and carrier fluid is mineral oil, magnetorheological fluid waste liquid to be processed in the present embodiment
It is in its solution after using more than its shear fatigue service life, the variable quantity of its zero-shear viscosity and adjustable multiple is being examined at this time
It is in the process more than ± 10%；The constituent for the recovery processing agent that the present embodiment uses and the mass fraction of each component are as follows: with
Total number is 100 parts of meters, and corncob is 15 parts, and 20 parts of peanut shell, 5 parts of neopelex, 2 parts of methanol, remaining is to go
Ionized water, it is specific the preparation method comprises the following steps:
(1) corncob and peanut shell are crushed respectively, it is the maize cob meal and peanut of 4~10mm that sieve, which takes partial size, respectively
Shell powder；
(2) maize cob meal and peanut shell powder are mixed in proportion；
(3) neopelex is dissolved in deionized water, and is heated to 30 DEG C, keep the temperature 20min；
(4) mixture of maize cob meal and peanut shell powder is poured into deionized water and is stirred, mixing speed 300r/
Min, while 40 DEG C are heated to, stir 10min.
The recovery processing agent performance being prepared according to the method described above in the present embodiment is stablized, and is sealed under the conditions of being protected from light
Still there is good processing capacity after 2 years half.
The application method of above-mentioned recovery processing agent are as follows:
(1) recovery processing agent is added in magnetorheological fluid, the mass ratio of inorganic agent and magnetorheological fluid is 1:220, heating
To 50 DEG C；
(2) mixed liquor is stirred, mixing speed 3000r/min, stirs 1h；
(3) mixed liquor after stirring is heated to 60 DEG C, the concentrated sulfuric acid that mass fraction is 88%, the quality of the concentrated sulfuric acid is added
The 2.5% of mixed solution gross mass is accounted for, 7h is kept the temperature；
(4) deposit after reaction is rinsed with clear water.
Magnetorheological fluid is handled using the inorganic agent in the present embodiment, it then will be in solution using magnetic absorption effect
Main discrete particles and carrier fluid separation, the separation degree of main discrete particles and carrier fluid is up to 98% in the present embodiment.
Embodiment 3
The magnetorheological fluid handled in the present embodiment is main point using lauric acid as the magnetorheological fluid of surfactant main component
Scattered seed is straight iron powder, magnetic saturation 2.2T, and carrier fluid is dimethicone, and the magnetorheological fluid to be processed is useless in the present embodiment
Liquid is in its solution after using more than its shear fatigue service life, and the variable quantity of its zero-shear viscosity and adjustable multiple is being examined at this time
It is more than ± 10% during testing；The constituent for the recovery processing agent that the present embodiment uses and the mass fraction of each component are as follows:
It is in terms of 100 parts by total number, corncob is 20 parts, and 15 parts of peanut shell, 8 parts of neopelex, 5 parts of methanol, remaining is
Deionized water, it is specific the preparation method comprises the following steps:
(1) corncob and peanut shell are crushed respectively, it is the maize cob meal and peanut of 4~10mm that sieve, which takes partial size, respectively
Shell powder；
(2) maize cob meal and peanut shell powder are mixed in proportion；
(3) neopelex is dissolved in deionized water, and is heated to 30 DEG C, keep the temperature 20min；
(4) mixture of maize cob meal and peanut shell powder is poured into deionized water and is stirred, mixing speed 200r/
Min, while 45 DEG C are heated to, stir 10min.
The recovery processing agent performance being prepared according to the method described above in the present embodiment is stablized, and is sealed under the conditions of being protected from light
Still there is good processing capacity after 3 years.
The application method of above-mentioned recovery processing agent are as follows:
(1) recovery processing agent is added in magnetorheological fluid, the mass ratio of inorganic agent and magnetorheological fluid is 1:210, heating
To 45 DEG C；
(2) mixed liquor is stirred, mixing speed 2500r/min, stirs 1.5h；
(3) mixed liquor after stirring is heated to 75 DEG C, the concentrated sulfuric acid that mass fraction is 92%, the quality of the concentrated sulfuric acid is added
The 2.25% of mixed solution gross mass is accounted for, 7h is kept the temperature；
(4) deposit after reaction is rinsed with clear water.
Magnetorheological fluid is handled using the inorganic agent in the present embodiment, it then will be in solution using magnetic absorption effect
Main discrete particles and carrier fluid separation, the separation degree of main discrete particles and carrier fluid is up to 95% in the present embodiment.
Claims (9)
1. a kind of recovery processing agent of the modified magnetorheological fluid of lauric acid, it is characterised in that: the matter of its constituent and each component
Measure number are as follows: by total number be 100 parts in terms of, 15~20 parts of corncob, 15~20 parts of peanut shell, neopelex 5~8
Part, remaining is water.
2. a kind of recovery processing agent of the modified magnetorheological fluid of lauric acid according to claim 1, it is characterised in that: its group
At the mass fraction of ingredient and each component are as follows: by total number be 100 parts in terms of, corncob be 18 parts, 18 parts of peanut shell, dodecyl
6 parts of benzene sulfonic acid sodium salt, remaining is water.
3. a kind of recovery processing agent of the modified magnetorheological fluid of lauric acid according to claim 1 or 2, it is characterised in that:
It further include 2~5 parts of methanol.
4. a kind of preparation method of the recovery processing agent for the magnetorheological fluid that lauric acid is modified, step described in claims 1 or 2
Suddenly are as follows:
(1) corncob and peanut shell are crushed respectively, sieve takes smashed maize cob meal and peanut shell powder；
(2) maize cob meal and peanut shell powder are mixed in proportion；
(3) neopelex is dissolved in deionized water, and is heated to 20~30 DEG C, keep the temperature 20min；
(4) it will be stirred in solution that the mixture of maize cob meal and peanut shell powder pours into step (3), while being heated to 40
~50 DEG C.
5. a kind of preparation method of the recovery processing agent of the modified magnetorheological fluid of lauric acid according to claim 4, special
Sign is: screening partial size is 4~10mm maize cob meal and peanut shell powder in the step (1).
6. a kind of preparation method of the recovery processing agent of the modified magnetorheological fluid of lauric acid according to claim 4, special
Sign is: sodium dodecyl benzene sulfonate aqueous solution being heated to 30 DEG C in the step (3), keeps the temperature 20min.
7. a kind of preparation method of the recovery processing agent of the modified magnetorheological fluid of lauric acid according to claim 4 or 5,
Be characterized in that: mixing speed is 200~300r/min, mixing time 10min in the step (4).
8. a kind of preparation method of the recovery processing agent of the modified magnetorheological fluid of lauric acid according to claim 7, special
Sign is: the mixing speed in the step (4) is 250r/min, and heating temperature is 45 DEG C.
9. a kind of preparation method of the recovery processing agent of the modified magnetorheological fluid of lauric acid according to claim 4, special
Sign is: further include step (5), i.e., continuously add after the step (4) 2~5 parts of methanol carry out it is uniformly mixed.
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| CN201610495215.4A CN105884088B (en) | 2016-06-28 | 2016-06-28 | A kind of recovery processing agent of magnetorheological fluid and preparation method thereof that lauric acid is modified |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101550261A (en) * | 2008-12-31 | 2009-10-07 | 上海闰铭精密技术有限公司 | High oil absorption composite material containing cellulose waste filler and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101550261A (en) * | 2008-12-31 | 2009-10-07 | 上海闰铭精密技术有限公司 | High oil absorption composite material containing cellulose waste filler and preparation method thereof |
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