CN1594483A - High viscosity magnetic liquid sealing materials and method for making same - Google Patents
High viscosity magnetic liquid sealing materials and method for making same Download PDFInfo
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- CN1594483A CN1594483A CN 200410020900 CN200410020900A CN1594483A CN 1594483 A CN1594483 A CN 1594483A CN 200410020900 CN200410020900 CN 200410020900 CN 200410020900 A CN200410020900 A CN 200410020900A CN 1594483 A CN1594483 A CN 1594483A
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- particle
- kerosene
- magnetic nano
- oleic acid
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- Sealing Material Composition (AREA)
- Soft Magnetic Materials (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The invention provides a high viscosity magnetic liquid sealing materials and method for making same, wherein the sealing material comprises metallic or alloy magnetic nano particles 15-65 wt%, silicone oil 25-60 wt%, silicone grease 10-20 wt%, oleinic acid 2-4 wt%, kerosene 2-4 wt%, and the preparing process consists of coating the metallic or alloy magnetic nano particles with the miscible liquid of oleinic acid and kerosene, charging silicone oil and silicone grease, and carrying out mechanical stirring.
Description
Technical field:
The present invention relates to a kind of sealing of the big stroke to-and-fro movement of low speed intermediate gap sealing material, particularly a kind of high viscosity magnetic liquid sealing material and manufacture method of being used for.
Background technology:
Both at home and abroad the big stroke to-and-fro movement of low speed intermediate gap is sealed at present, mostly by material seals such as mechanical engagement sealing or use packing, tetrafluoroethylene, its shortcoming is, because the sealing position is hard contact, in the to-and-fro movement process, because mechanical wear, it is big that sealing-gap will become gradually, leaking gradually increases, and finally causes the sealing failure.
Summary of the invention:
The objective of the invention is the shortcoming that exists in the above-mentioned technology, a kind of high viscosity magnetic liquid sealing material is provided.When using the high viscosity magnetic fluid sealing, because magnetic fluid sealing is soft seal, there is not mechanical wear in not hard contact at the sealing position, so good airproof performance, sealing life is long, and prolong more than one times general sealing life.The magnetic liquid that is used for the sealing of the big stroke to-and-fro movement of low speed intermediate gap must be full-bodied magnetic liquid.Performance index are: viscosity is 2.0 * 10 during 25 ℃ of room temperatures
5-6.0 * 10
5MPas, saturation magnetization is 12-100Am
2/ kg.
The object of the present invention is achieved like this: the consisting of of sealing material: metal or alloy magnetic nano-particle 15-65wt%, silicone oil 25-60wt%, silicone grease 10-20wt%, oleic acid 2-4wt%, kerosene 2-4wt%.Manufacture method is, take by weighing metal or alloy magnetic nano-particle, silicone oil and silicone grease by formula rate, according to the weight of magnetic nano-particle, the mixed solution (weight ratio of oleic acid and kerosene is 1 to 2) of preparation oleic acid and kerosene, the weight of mixed solution is 8 times of weight of magnetic nano-particle.At first the metal or alloy magnetic nano-particle is put into beaker, pour the oleic acid for preparing and the mixed solution of kerosene into, stir the back with ultrasonic oscillation 15-20 minute; Beaker is heated to 200 ℃ of degree, after keeping 30-35 minute under this temperature, naturally cools to room temperature; Extrude the mixed solution of unnecessary oleic acid and kerosene outwells with magnet; Put it into baking oven again, at first be heated to 200 ℃ and constant temperature 60-65 minute, and then cool to 150 ℃ and constant temperature 60-65 minute, cool to 100 ℃ and constant temperature 60-65 minute afterwards again, naturally cool to room temperature then.Putting into stirred vessel, mechanical stirring 5-6 hour, promptly prepare the high viscosity magnetic liquid sealing material through the metal or alloy magnetic nano-particle that coats and the silicone oil and the silicone grease that weigh up.Performance index are: viscosity is 2.0 * 10 during 25 ℃ of room temperatures
5-6.0 * 10
5MPas, saturation magnetization is 12-100Am
2/ kg.
Advantage of the present invention is not have the machinery wearing and tearing, good airproof performance, and sealing life is long, and prolong more than one times general sealing life.
Embodiment:
The present invention is described further below in conjunction with specific embodiment:
Embodiment 1:
Consisting of of sealing material: metal or alloy magnetic nano-particle 15-65wt%, silicone oil 25-60wt%, silicone grease 10-20wt%, oleic acid 2-4wt%, kerosene 2-4wt%.Manufacture method is, take by weighing metal or alloy magnetic nano-particle, silicone oil and silicone grease by formula rate, according to the weight of magnetic nano-particle, the mixed solution (weight ratio of oleic acid and kerosene is 1 to 2) of preparation oleic acid and kerosene, the weight of mixed solution should be 8 times of weight of magnetic nano-particle.At first the metal or alloy magnetic nano-particle is put into beaker, pour the oleic acid for preparing and the mixed solution of kerosene into, stir the back with ultrasonic oscillation 15-20 minute; Beaker is heated to 200 ℃ of degree, after keeping 30-35 minute under this temperature, naturally cools to room temperature; Extrude the mixed solution of unnecessary oleic acid and kerosene outwells with magnet; Put it into baking oven again, at first be heated to 200 ℃ and constant temperature 60-65 minute, and then cool to 150 ℃ and constant temperature 60-65 minute, cool to 100 ℃ and constant temperature 60-65 minute afterwards again, naturally cool to room temperature then.Putting into stirred vessel, mechanical stirring 5-6 hour, promptly prepare the high viscosity magnetic liquid sealing material through the metal or alloy magnetic nano-particle that coats and the silicone oil and the silicone grease that weigh up.Performance index are: viscosity is 2.0 * 10 during 25 ℃ of room temperatures
5-6.0 * 10
5MPas, saturation magnetization is 12-100Am
2/ kg.
Embodiment 2: the gap sealed high viscosity magnetic liquid sealing material that is used for ram pump
Consisting of of sealing material: metal or alloy magnetic nano-particle 30-50wt%, silicone oil 30-50wt%, silicone grease 10-25wt%, oleic acid 2-3wt%, kerosene 3-4wt%.With the high viscosity magnetic liquid sealing material of above-mentioned formulation, its performance index are: viscosity is 2.5 * 10 during 25 ℃ of room temperatures
5-3.5 * 10
5MPas, saturation magnetization is 30-50Am
2/ kg.
Embodiment 3: the gap sealed high viscosity magnetic liquid sealing material that is used for pkr
Consisting of of sealing material: metal or alloy magnetic nano-particle 40-60wt%, silicone oil 20-45wt%, silicone grease 10-15wt%, oleic acid 3-4wt%, kerosene 2-4wt%.With the high viscosity magnetic liquid sealing material of above-mentioned formulation, its performance index are: viscosity is 3.0 * 10 during 25 ℃ of room temperatures
5-4.0 * 10
5MPas, saturation magnetization is 40-70Am
2/ kg
Embodiment 2,3 concrete manufacture method are identical with embodiment 1.
Claims (2)
1, a kind of high viscosity magnetic liquid sealing material and manufacture method, its major technique feature is, the consisting of of sealing material: metal or alloy magnetic nano-particle 15-65wt%, silicone oil 25-60wt%, silicone grease 10-20wt%, oleic acid 2-4wt%, kerosene 2-4wt%.Manufacture method is, take by weighing metal or alloy magnetic nano-particle, silicone oil and silicone grease by formula rate, according to the weight of magnetic nano-particle, the mixed solution of preparation oleic acid and kerosene, the weight ratio of oleic acid and kerosene is 1 to 2, and the weight of mixed solution should be 8 times of weight of magnetic nano-particle.At first the metal or alloy magnetic nano-particle is put into beaker, pour the oleic acid for preparing and the mixed solution of kerosene into, stir the back with ultrasonic oscillation 15-20 minute; Beaker is heated to 200 ℃ of degree, after keeping 30-35 minute under this temperature, naturally cools to room temperature; Extrude the mixed solution of unnecessary oleic acid and kerosene outwells with magnet; Put it into baking oven again, at first be heated to 200 ℃ and constant temperature 60-65 minute, and then cool to 150 ℃ and constant temperature 60-65 minute, cool to 100 ℃ and constant temperature 60-65 minute afterwards again, naturally cool to room temperature then.Putting into stirred vessel, mechanical stirring 5-6 hour through the metal or alloy magnetic nano-particle that coats and the silicone oil and the silicone grease that weigh up.
2, a kind of high viscosity magnetic liquid sealing material according to claim 1 and manufacture method, performance index are: viscosity is 2.0 * 10 during 25 ℃ of room temperatures
5-6.0 * 10
5MPa.s, saturation magnetization is 12-100Am
2/ kg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410020900 CN1594483A (en) | 2004-07-05 | 2004-07-05 | High viscosity magnetic liquid sealing materials and method for making same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410020900 CN1594483A (en) | 2004-07-05 | 2004-07-05 | High viscosity magnetic liquid sealing materials and method for making same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1594483A true CN1594483A (en) | 2005-03-16 |
Family
ID=34663278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410020900 Pending CN1594483A (en) | 2004-07-05 | 2004-07-05 | High viscosity magnetic liquid sealing materials and method for making same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1594483A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101514284B (en) * | 2009-03-27 | 2012-01-25 | 沈阳工业大学 | Method for preparing alkali-resistant magnetic liquid sealing material |
| CN105016396A (en) * | 2015-07-20 | 2015-11-04 | 重庆科技学院 | Multiferroic liquid and preparation method thereof |
| CN105609227A (en) * | 2016-03-21 | 2016-05-25 | 沈阳工业大学 | Preparation method of turbine oil-based magnetic liquid |
-
2004
- 2004-07-05 CN CN 200410020900 patent/CN1594483A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101514284B (en) * | 2009-03-27 | 2012-01-25 | 沈阳工业大学 | Method for preparing alkali-resistant magnetic liquid sealing material |
| CN105016396A (en) * | 2015-07-20 | 2015-11-04 | 重庆科技学院 | Multiferroic liquid and preparation method thereof |
| CN105609227A (en) * | 2016-03-21 | 2016-05-25 | 沈阳工业大学 | Preparation method of turbine oil-based magnetic liquid |
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