CN102041154A - Preparation method of water-based magneto rheological hydraulic transmission medium - Google Patents
Preparation method of water-based magneto rheological hydraulic transmission medium Download PDFInfo
- Publication number
- CN102041154A CN102041154A CN2010106054030A CN201010605403A CN102041154A CN 102041154 A CN102041154 A CN 102041154A CN 2010106054030 A CN2010106054030 A CN 2010106054030A CN 201010605403 A CN201010605403 A CN 201010605403A CN 102041154 A CN102041154 A CN 102041154A
- Authority
- CN
- China
- Prior art keywords
- water
- suspension
- stirring velocity
- greenhouse
- minutes
- 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.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 230000005540 biological transmission Effects 0.000 title abstract description 8
- 238000003756 stirring Methods 0.000 claims abstract description 25
- 239000000654 additive Substances 0.000 claims abstract description 11
- 230000000996 additive effect Effects 0.000 claims abstract description 11
- 239000006249 magnetic particle Substances 0.000 claims abstract description 10
- 239000008234 soft water Substances 0.000 claims abstract description 4
- 230000005291 magnetic effect Effects 0.000 claims description 42
- 239000000725 suspension Substances 0.000 claims description 40
- 238000000518 rheometry Methods 0.000 claims description 20
- 239000000843 powder Substances 0.000 claims description 13
- 239000002994 raw material Substances 0.000 claims description 11
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 claims description 6
- 239000013543 active substance Substances 0.000 claims description 5
- QDCPNGVVOWVKJG-VAWYXSNFSA-N 2-[(e)-dodec-1-enyl]butanedioic acid Chemical compound CCCCCCCCCC\C=C\C(C(O)=O)CC(O)=O QDCPNGVVOWVKJG-VAWYXSNFSA-N 0.000 claims description 4
- 239000003963 antioxidant agent Substances 0.000 claims description 4
- 230000003078 antioxidant effect Effects 0.000 claims description 4
- 239000000314 lubricant Substances 0.000 claims description 4
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 3
- 238000002242 deionisation method Methods 0.000 claims description 3
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims description 3
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 3
- 229920000609 methyl cellulose Polymers 0.000 claims description 3
- 239000001923 methylcellulose Substances 0.000 claims description 3
- 229910052901 montmorillonite Inorganic materials 0.000 claims description 3
- -1 polyoxyethylene Polymers 0.000 claims description 3
- WXMKPNITSTVMEF-UHFFFAOYSA-M sodium benzoate Chemical compound [Na+].[O-]C(=O)C1=CC=CC=C1 WXMKPNITSTVMEF-UHFFFAOYSA-M 0.000 claims description 3
- 235000010234 sodium benzoate Nutrition 0.000 claims description 3
- 239000004299 sodium benzoate Substances 0.000 claims description 3
- 235000010288 sodium nitrite Nutrition 0.000 claims description 3
- 229910000990 Ni alloy Inorganic materials 0.000 claims description 2
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 2
- 229920002125 Sokalan® Polymers 0.000 claims description 2
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 2
- 239000000428 dust Substances 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 239000004584 polyacrylic acid Substances 0.000 claims description 2
- 238000005299 abrasion Methods 0.000 abstract description 6
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 15
- 230000000694 effects Effects 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000011553 magnetic fluid Substances 0.000 description 2
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 description 1
- 229930006000 Sucrose Natural products 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000975 co-precipitation Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000011859 microparticle Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000005720 sucrose Substances 0.000 description 1
Abstract
The invention relates to a preparation method of a water-based magneto rheological hydraulic transmission medium, comprising: proportioning 55-70% of deionized soft water, 29-45% of magnetic particle and 1-10% of additive; successively adding; and mixing and stirring to obtain the water-based magneto rheological hydraulic transmission medium. The medium has good stability and inoxidizability and can greatly improve the abrasion resistance and the rust protection of a hydraulic system working medium.
Description
One, technical field
The present invention relates to a kind of method that is prepared into of water-base magnetic rheology hydraulic pressure driving medium, belong to the chemical preparation technical field.
Two, background technology
Magnetic flow liquid is the intelligent material with property that the flowability with magnetic and liquid is unified, can under the effect of externally-applied magnetic field, can moment (Millisecond) change approximate semi-solid state into from free-pouring liquid state, present controlled yield strength, and this variation is continuously, reversible.It is widely used in fields such as biological medicine, aerospace, large scale civil engineering, mechanical workout, automobile engineering and electromechanical integration.
In the pertinent literature of the water based magnetic rheologic liquid of having reported at present, water based magnetic rheologic liquid is mainly used in aspects such as chemical industry, medical treatment, also not with the report of water based magnetic rheologic liquid as hydraulic transmission medium.Water based magnetic rheologic liquid is made up of three parts: solid magnetic particulate, carrier fluid, additive.The solid magnetic particulate is generally used ferromagnetic material, ferric magnetic substance and other soft magnetism material etc.Carrier fluid is a water, and main effect is that the solid magnetic particulate is dispersed in wherein.The effect of additive is a performance of improving magnetic flow liquid.Because water based magnetic rheologic liquid is carrier fluid with water, mass propertys such as perishable, the easy frictional wear of water are so the rust-preventing characteristic of water based magnetic rheologic liquid, abrasion resistance are poor.The main effect of known water-base magnetic rheology solution additive is to stress to improve the stability of water based magnetic rheologic liquid and the oxidation-resistance of solid magnetic particulate.Patent of invention " a kind of stable water based magnetic rheologic liquid and preparation method thereof " (publication number CN19599871A), adopted a kind of composite base fluid to improve the oxidation-resistance and the resistance to settling of magnetic flow liquid, though the composition of wear preventive additive is arranged in the additive, but the magnetic flow liquid of this method preparation is not strong to the resistance to abrasion of metallic surface, and rustless property is poor, is not suitable as hydraulic transmission medium.Patent of invention " a kind of water-based magnetic fluid material and preparation method thereof " (publication number CN101136277A), employing sucrose is tensio-active agent, make stable water-based magnetic fluid with chemical coprecipitation, this method makes magnetic flow liquid and is not suitable as hydraulic transmission medium equally.Therefore, this patent is invented a kind of preparation method of water-base magnetic rheology hydraulic pressure driving medium.
Three, summary of the invention
The object of the present invention is to provide a kind of preparation method of water-base magnetic rheology hydraulic pressure driving medium, deionization soft water with 55%～70%, 29%～45% magnetic particle and 1%～10% additive formula, and add successively, mix, obtain water-base magnetic rheology hydraulic pressure driving medium.This medium is good stability not only, good in oxidation resistance, and can also significantly improve the resistance to abrasion and the rust-preventing characteristic of hydraulic work system medium.
Raw material of the present invention is pressed following mass percent proportioning:
55～70% deionization soft water, 29～45% magnetic particle powder, 1～10% additive;
Described magnetic particle powder is Fe
3O
4, carbonyl iron dust or Fe, Co, Ni alloy powder, granularity is 8～15nm;
Described additive comprises followingly to be counted by water-base magnetic rheology hydraulic pressure driving medium total mass per-cent:
1) anti-settlement stability agent is 0.1%～1.5% methylcellulose gum or montmorillonite;
2) tensio-active agent is 0.1%～1.5% polyacrylic acid, polyoxyethylene glycol or Sunmorl N 60S;
3) antioxidant is 0.1%～2% Sodium Nitrite or Sodium Benzoate;
4) lubricant is 0.6%～3% SiO
2Powder or TiO
2Powder, granularity are 10～100nm;
5) rust-preventive agent is 0.1%～2% dodecenylsuccinic acid.
Preparation process of the present invention is:
1, press water 55%～70%, the mass percent metering of magnetic particle powder 29%～45% mixes the magnetic particle powder with water, at room temperature stirred 3～5 hours, and stirring velocity 100-200r/min obtains suspension one time;
2, tensio-active agent is joined in suspension by 0.1%～1.5% of raw material total mass, mixed under the greenhouse 30～60 minutes, stirring velocity 100-200r/min obtains secondary suspension;
3, will resist the settlement stability agent to join in the secondary suspension by raw material total mass 0.1%～1.5%, mix under the greenhouse 30～60 minutes, stirring velocity 100-200r/min obtains suspension three times;
4, antioxidant is joined in three suspension by raw material total mass 0.1%～2%, mixed under the greenhouse 10～30 minutes, stirring velocity 100-200r/min obtains suspension four times;
5, lubricant is joined in four suspension by medium total mass 0.6%～3%, mixed under the greenhouse 10～30 minutes, stirring velocity 100-200r/min obtains suspension five times;
6, rust-preventive agent is joined in five suspension by raw material total mass 0.1%～2%, mixed under the greenhouse 10～30 minutes, stirring velocity 100-200r/min obtains water-base magnetic rheology hydraulic pressure driving medium.
The present invention possesses following advantage:
1) water-base magnetic rheology hydraulic pressure driving medium of the present invention has made full use of the chemical reaction in the generation of solid magnetic microparticle surfaces of anti-settlement stability agent, dispersion stabilizer, can prevent the sedimentation and the reunion of particle effectively.
2) water-base magnetic rheology hydraulic pressure driving medium of the present invention has utilized the special dynamic protection film that anti-wear agent forms by rubbing effect on the Hydraulic Elements surface, makes the abrasion resistance of Hydraulic Elements, and rustless property improves.
3) water-base magnetic rheology hydraulic pressure driving medium of the present invention can reach good effect as hydraulic transmission medium the time, and the erosion resistance of hydraulic efficiency system, cavitation resistance are good, and frictional wear amount, spillage are few, and system works is stable.
Four, embodiment
The preparation of 100g water-base magnetic rheology hydraulic pressure driving medium, its preparation steps is:
Embodiment one: with 38gFe
3O
4Mix with 55g water, at room temperature stirred 4 hours, stirring velocity 150r/min obtains suspension one time; The 1g polyoxyethylene glycol is joined in suspension, mixed under the greenhouse 30 minutes, stirring velocity 150r/min obtains secondary suspension; The 1g montmorillonite is joined in the secondary suspension, mixed under the greenhouse 30 minutes, stirring velocity 150r/min obtains suspension three times; The 1.5g Sodium Benzoate is joined in three suspension, mixed under the greenhouse 15 minutes, stirring velocity 150r/min obtains suspension four times; With 2.5gTiO
2Particle joins in four suspension, mixes under the greenhouse 15 minutes, and stirring velocity 150r/min obtains suspension five times; The 1g dodecenylsuccinic acid is joined in five suspension, mixed under the greenhouse 30 minutes, stirring velocity 150r/min obtains water-base magnetic rheology hydraulic pressure driving medium;
Embodiment two: with 30gFe
3O
4Mix with 60g water, at room temperature stirred 4 hours, stirring velocity 150r/min obtains suspension one time; The 1.5g Sunmorl N 60S is joined in suspension, mixed under the greenhouse 30 minutes, stirring velocity 150r/min obtains secondary suspension; The 1.5g methylcellulose gum is added in the secondary suspension, mixed under the greenhouse 30 minutes, stirring velocity 150r/min obtains suspension three times; The 2g Sodium Nitrite is joined in three suspension, mixed under the greenhouse 15 minutes, stirring velocity 150r/min obtains suspension four times; With 3gTiO
2Particle joins in four suspension, mixes under the greenhouse 15 minutes, and stirring velocity 150r/min obtains suspension five times; In five suspension of 2g dodecenylsuccinic acid adding, under the greenhouse, mixed 30 minutes, stirring velocity 150r/min obtains water-base magnetic rheology hydraulic pressure driving medium;
The magnetic saturation of the magnetorheological hydraulic pressure driving medium of gained oil base is 13.6emu/g.Utilize the hydraulic transmission medium multi-function test stand that resulting water-base magnetic rheology hydraulic pressure driving medium is tested, water-base magnetic rheology hydraulic pressure driving medium does not have deposition and agglomeration, and the resistance to abrasion of hydraulic efficiency system is good, and spillage is less.
Claims (2)
1. the preparation method of a water-base magnetic rheology hydraulic pressure driving medium is characterized in that:
Raw material is pressed following mass percent proportioning:
55～70% deionization soft water, 29～45% magnetic particle powder, 1～10% additive;
Preparation process of the present invention is:
1), press water 55%～70%, the mass percent metering of magnetic particle 29%～45% mixes the magnetic particle powder with water, at room temperature stirred 3～5 hours, stirring velocity 100-200r/min obtains suspension one time;
2), tensio-active agent is joined in suspension by 0.1%～1.5% of raw material total mass, mixed under the greenhouse 30～60 minutes, stirring velocity 100-200r/min obtains secondary suspension;
3), will resist the settlement stability agent to join in the secondary suspension by raw material total mass 0.1%～1.5%, under the greenhouse, mixed 30～60 minutes, stirring velocity 100-200r/min obtains suspension three times;
4), antioxidant is joined in three suspension by raw material total mass 0.1%～2%, mixed under the greenhouse 10～30 minutes, stirring velocity 100-200r/min obtains suspension four times;
5), lubricant is joined in four suspension by raw material total mass 0.6%～3%, mixed under the greenhouse 10～30 minutes, stirring velocity 100-200r/min obtains suspension five times;
6), rust-preventive agent is joined in five suspension by raw material total mass 0.1%～2%, mixed under the greenhouse 10～30 minutes, stirring velocity 100-200r/min obtains water-base magnetic rheology hydraulic pressure driving medium.
2. the preparation method of water-base magnetic rheology hydraulic pressure driving medium according to claim 1 is characterized in that:
Described magnetic particle powder is Fe
3O
4, carbonyl iron dust or Fe, Co, Ni alloy powder, granularity is 8～15nm;
Described additive comprises followingly to be counted by water-base magnetic rheology hydraulic pressure driving medium total mass per-cent:
1) anti-settlement stability agent is 0.1%～1.5% methylcellulose gum or montmorillonite;
2) tensio-active agent is 0.1%～1.5% polyacrylic acid, polyoxyethylene glycol or Sunmorl N 60S;
3) antioxidant is 0.1%～2% Sodium Nitrite or Sodium Benzoate;
4) lubricant is 0.6%～3% SiO
2Powder or TiO
2Powder, granularity are 10～100nm;
5) rust-preventive agent is 0.1%～2% dodecenylsuccinic acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010605403.0A CN102041154B (en) | 2010-12-27 | 2010-12-27 | Preparation method of water-based magneto rheological hydraulic transmission medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010605403.0A CN102041154B (en) | 2010-12-27 | 2010-12-27 | Preparation method of water-based magneto rheological hydraulic transmission medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102041154A true CN102041154A (en) | 2011-05-04 |
| CN102041154B CN102041154B (en) | 2013-06-12 |
Family
ID=43907703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010605403.0A Expired - Fee Related CN102041154B (en) | 2010-12-27 | 2010-12-27 | Preparation method of water-based magneto rheological hydraulic transmission medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102041154B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103333533A (en) * | 2013-07-11 | 2013-10-02 | 合肥旭阳铝颜料有限公司 | Magnetic bronze powder preparation method |
| CN104361972A (en) * | 2014-10-07 | 2015-02-18 | 冯智勇 | Novel alcohol-based magnetic fluid sealing material |
| CN105016860A (en) * | 2015-06-26 | 2015-11-04 | 刘志勇 | Production method of organic/inorganic composite magnetic-carried suspending agent |
| CN105904332A (en) * | 2016-04-13 | 2016-08-31 | 宋佳 | Magneto-rheological amorphous alloy polishing device, polishing agent and polishing method |
| CN106117402A (en) * | 2016-07-04 | 2016-11-16 | 中北大学 | High-performance magnetorheological nano composite polymeric gel process for preparing |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0987650A (en) * | 1995-09-22 | 1997-03-31 | Nok Corp | Production of magnetic fluid |
| US6159396A (en) * | 1994-02-14 | 2000-12-12 | Toyohisa Fujita | Electrorheological magnetic fluid and process for producing the same |
| CN1959871A (en) * | 2006-10-10 | 2007-05-09 | 武汉理工大学 | Stable water based magnetic rheologic liquid, and preparation method |
| CN101712904A (en) * | 2009-11-20 | 2010-05-26 | 东南大学 | Magneto-rheological fluid |
-
2010
- 2010-12-27 CN CN201010605403.0A patent/CN102041154B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6159396A (en) * | 1994-02-14 | 2000-12-12 | Toyohisa Fujita | Electrorheological magnetic fluid and process for producing the same |
| JPH0987650A (en) * | 1995-09-22 | 1997-03-31 | Nok Corp | Production of magnetic fluid |
| CN1959871A (en) * | 2006-10-10 | 2007-05-09 | 武汉理工大学 | Stable water based magnetic rheologic liquid, and preparation method |
| CN101712904A (en) * | 2009-11-20 | 2010-05-26 | 东南大学 | Magneto-rheological fluid |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103333533A (en) * | 2013-07-11 | 2013-10-02 | 合肥旭阳铝颜料有限公司 | Magnetic bronze powder preparation method |
| CN104361972A (en) * | 2014-10-07 | 2015-02-18 | 冯智勇 | Novel alcohol-based magnetic fluid sealing material |
| CN105016860A (en) * | 2015-06-26 | 2015-11-04 | 刘志勇 | Production method of organic/inorganic composite magnetic-carried suspending agent |
| CN105904332A (en) * | 2016-04-13 | 2016-08-31 | 宋佳 | Magneto-rheological amorphous alloy polishing device, polishing agent and polishing method |
| CN106117402A (en) * | 2016-07-04 | 2016-11-16 | 中北大学 | High-performance magnetorheological nano composite polymeric gel process for preparing |
| CN106117402B (en) * | 2016-07-04 | 2017-11-28 | 中北大学 | High-performance magnetorheological nano composite polymeric gel process for preparing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102041154B (en) | 2013-06-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102041154B (en) | Preparation method of water-based magneto rheological hydraulic transmission medium | |
| CN104004435B (en) | High temperature abrasion material under a kind of 800 degree of high temperature and preparation method thereof | |
| CN105838195B (en) | A kind of water corrosion-resistant epoxy paint and preparation method thereof containing graphene oxide | |
| CN100447913C (en) | Stable water based magnetic rheologic liquid, and preparation method | |
| CN101475762A (en) | Rare earth anti-corrosive antirusting paint | |
| CN104560301A (en) | Mineral oil based magnetorheological fluid for high power transmission and preparation method thereof | |
| CN103215113A (en) | Magneto-rheological fluid with good settling agglomeration resistance | |
| CN100454452C (en) | Stable silicone oil based magnetic rheologic liquid, and preparation method | |
| KR101865939B1 (en) | A method for praparing Magnetorheological Fluid | |
| CN103525505B (en) | Carbonyl iron powder capable of enhancing magnetorheological effect and magnetorheological fluid prepared from carbonyl iron powder | |
| CN105219230A (en) | A kind of oceanographic engineering heavy-duty coating | |
| CN106548847A (en) | A kind of magnetic flow liquid and preparation method thereof | |
| CN103187137A (en) | Method for preparing oil-based magnetic fluid | |
| CN101007918A (en) | Rust-preventive pigment | |
| CN102464900A (en) | Pigment dispersions and black water-reducing agent for cement | |
| CN109243749B (en) | Stable and quick-response high-yield-strength bimodal magnetorheological fluid and preparation method thereof | |
| CN103666144A (en) | Acrylic resin antirust paint for vehicle and preparation method thereof | |
| CN103606429B (en) | A kind of nano chromium carbide ferrofluid and preparation method thereof | |
| CN102031187B (en) | Method for preparing oil-based magneto-rheological hydraulic drive medium | |
| US6875368B2 (en) | Magnetorheological fluid composition and a process for preparation thereof | |
| CN103214917A (en) | Marine corrosion-resistant epoxy aluminum-magnesium-nickel rear earth rich nanometer material and preparation method thereof | |
| CN103254735A (en) | Ocean heavy anti-corrosion epoxy aluminum-rich nano-coating and preparation method thereof | |
| CN114203385A (en) | Three-dispersed-phase magnetorheological fluid with high stability and preparation method thereof | |
| CN102146314B (en) | Preparation method of water-based nanometer hydraulic transmission medium | |
| CN107880719A (en) | Water corrosion-resistant epoxy paint |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130612 Termination date: 20141227 |
|
| EXPY | Termination of patent right or utility model |