CN105318006A - High-temperature-resistant and self-lubricating soft packing - Google Patents
High-temperature-resistant and self-lubricating soft packing Download PDFInfo
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- CN105318006A CN105318006A CN201410368371.5A CN201410368371A CN105318006A CN 105318006 A CN105318006 A CN 105318006A CN 201410368371 A CN201410368371 A CN 201410368371A CN 105318006 A CN105318006 A CN 105318006A
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- Prior art keywords
- temperature
- resistant
- percent
- lubricating
- filler
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- 238000012856 packing Methods 0.000 title abstract description 19
- 239000000314 lubricant Substances 0.000 claims abstract description 11
- 239000007787 solid Substances 0.000 claims abstract description 11
- 239000010687 lubricating oil Substances 0.000 claims abstract description 8
- 150000001875 compounds Chemical class 0.000 claims abstract description 7
- 239000000945 filler Substances 0.000 claims description 28
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 12
- -1 polytetrafluoroethylene Polymers 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 10
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 10
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 10
- 229910021487 silica fume Inorganic materials 0.000 claims description 10
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 claims description 8
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 8
- 229910001928 zirconium oxide Inorganic materials 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 239000010439 graphite Substances 0.000 claims description 7
- 229910002804 graphite Inorganic materials 0.000 claims description 7
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims description 7
- 229910052982 molybdenum disulfide Inorganic materials 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 7
- 239000010455 vermiculite Substances 0.000 claims description 7
- 229910052902 vermiculite Inorganic materials 0.000 claims description 7
- 235000019354 vermiculite Nutrition 0.000 claims description 7
- 239000011787 zinc oxide Substances 0.000 claims description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 5
- 229910000423 chromium oxide Inorganic materials 0.000 claims description 5
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 4
- 229940049964 oleate Drugs 0.000 claims description 4
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 claims description 4
- 229920001568 phenolic resin Polymers 0.000 claims description 4
- 239000005011 phenolic resin Substances 0.000 claims description 4
- 229920002379 silicone rubber Polymers 0.000 claims description 4
- 239000004215 Carbon black (E152) Substances 0.000 claims description 3
- 239000000839 emulsion Substances 0.000 claims description 3
- 229930195733 hydrocarbon Natural products 0.000 claims description 3
- 150000002430 hydrocarbons Chemical class 0.000 claims description 3
- CBZNDCXNWNCBHK-UHFFFAOYSA-N methylidenesilane Chemical compound [SiH2]=C CBZNDCXNWNCBHK-UHFFFAOYSA-N 0.000 claims description 3
- 239000003921 oil Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- YUYCVXFAYWRXLS-UHFFFAOYSA-N trimethoxysilane Chemical compound CO[SiH](OC)OC YUYCVXFAYWRXLS-UHFFFAOYSA-N 0.000 claims description 3
- ALSTYHKOOCGGFT-KTKRTIGZSA-N (9Z)-octadecen-1-ol Chemical compound CCCCCCCC\C=C/CCCCCCCCO ALSTYHKOOCGGFT-KTKRTIGZSA-N 0.000 claims description 2
- BWDBEAQIHAEVLV-UHFFFAOYSA-N 6-methylheptan-1-ol Chemical compound CC(C)CCCCCO BWDBEAQIHAEVLV-UHFFFAOYSA-N 0.000 claims description 2
- 229940055577 oleyl alcohol Drugs 0.000 claims description 2
- XMLQWXUVTXCDDL-UHFFFAOYSA-N oleyl alcohol Natural products CCCCCCC=CCCCCCCCCCCO XMLQWXUVTXCDDL-UHFFFAOYSA-N 0.000 claims description 2
- 229940125898 compound 5 Drugs 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 abstract description 7
- 239000003566 sealing material Substances 0.000 abstract description 4
- 239000003638 chemical reducing agent Substances 0.000 abstract description 2
- 238000002156 mixing Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- SAUIGQBKPDQYHL-QXMHVHEDSA-N 6-methylheptyl (z)-octadec-9-enoate Chemical group CCCCCCCC\C=C/CCCCCCCC(=O)OCCCCCC(C)C SAUIGQBKPDQYHL-QXMHVHEDSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 229920006253 high performance fiber Polymers 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- BARWIPMJPCRCTP-UHFFFAOYSA-N oleic acid oleyl ester Natural products CCCCCCCCC=CCCCCCCCCOC(=O)CCCCCCCC=CCCCCCCCC BARWIPMJPCRCTP-UHFFFAOYSA-N 0.000 description 1
- BARWIPMJPCRCTP-CLFAGFIQSA-N oleyl oleate Chemical compound CCCCCCCC\C=C/CCCCCCCCOC(=O)CCCCCCC\C=C/CCCCCCCC BARWIPMJPCRCTP-CLFAGFIQSA-N 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Sealing Devices (AREA)
- Sealing Material Composition (AREA)
Abstract
The invention relates to a sealing material and belongs to the technical field of sealing materials for rotary shaft levers of pumps, valves, speed reducers and the like. The high-temperature-resistant and self-lubricating soft packing comprises components in percentage by mass as follows: 20%-40% of temperature-resistant packing, 20%-30% of soft packing, 5%-10% of an impregnating compound, 5%-15% of a solid lubricant and 5%-15% of a liquid lubricant. The high-temperature-resistant and self-lubricating soft packing can protect bearings effectively, and the condition that the bearings are damaged due to frictional heating caused by excessive prestress can be avoided.
Description
Technical Field
The invention relates to a sealing material, belonging to the technical field of shaft lever sealing materials with rotary motion, such as pumps, valves, reducers and the like.
Background
The packing of design specification is mostly adopted to current pump, fills in the packing box of pump. Although the sealing mode is simple and convenient and can achieve a certain effect, a certain degree of friction still exists between the packing and the pump shaft, even if the packing has a very small friction coefficient, the heat productivity of the contact part of the packing and the shaft is also remarkable, and therefore the packing and the pump shaft are often required to be matched with a cooling system to work together. Meanwhile, the long-term use of the bearing is also serious to the abrasion of the bearing, and permanent damage can be caused to the bearing after the long-term use of the bearing.
-a clay-like filler, also known as: the 'injection type soft packing' is a high-grade 'packing' which is prepared by matching a new generation of high-performance fiber with special grease and lubrication and is refined, has any size, shape and easy installation, can be directly injected by a special high-pressure gun, does not need to be precut like the traditional packing, and can be suitable for sealing packing boxes with any size.
The installation wadding need give certain prestressing force for packing, and the overweight can cause packing and bearing extrusion tension excessively, leads to packing and bearing friction to produce the appearance of phenomenon such as big heat and accompanying pump lift vibration, consequently reasonable prestressing force of applying can make packing and bearing well cooperate, but how can rationally apply prestressing force, how big power is suitable, if the prestressing force is too big how avoid taking place above-mentioned condition again.
Disclosure of Invention
The invention aims to solve the technical problem of providing a high-temperature-resistant self-lubricating soft filler aiming at the defects of the prior art.
The technical scheme provided by the invention for solving the technical problems is as follows: a high-temperature-resistant self-lubricating soft filler comprises the following components in percentage by mass:
20 to 40 percent of temperature-resistant filler
20 to 30 percent of soft filler
5 to 10 percent of impregnating compound
5 to 15 percent of solid lubricant
5 to 15 percent of liquid lubricant
Wherein,
the temperature-resistant filler is a mixture of at least two of silica fume, raw vermiculite, alumina, chromium oxide and zirconium oxide;
the soft filler is one or two of silicon rubber or phenolic resin;
the impregnating compound is one of trimethoxy silane, methylene silane or polytetrafluoroethylene emulsion;
the solid lubricant is one or a mixture of more of graphite, molybdenum disulfide, polytetrafluoroethylene powder or zinc oxide;
the liquid lubricant is one of isooctyl alcohol oleate, oleyl alcohol oleate or PAO poly alpha dilute hydrocarbon synthetic oil.
The temperature-resistant filler comprises the following components in percentage by mass: 50-75% of silica fume, 25-50% of raw vermiculite, 0-10% of alumina, 0-10% of chromic oxide and 0-10% of zirconium oxide.
The particle size of the silica fume is 575-825 meshes.
The solid lubricant comprises the following components in percentage by mass: 20-55% of graphite, 20-45% of molybdenum disulfide, 0-15% of polytetrafluoroethylene powder and 0-10% of zinc oxide.
The invention adopts the technical scheme that the method has the beneficial effects that: the filler has wider application range and is suitable for high-temperature working environments. In addition, the friction coefficient of the invention is small due to the material of the invention, and a lubricating oily substance can be precipitated under a certain temperature regulation, so that the friction coefficient is further reduced. And the condition that the friction coefficient is too large due to the too large pretightening force to generate a large amount of heat due to the friction between the shaft part and the filler can be reduced to a certain extent.
Detailed Description
Example one
The high-temperature-resistant self-lubricating soft filler comprises the following components in percentage by mass:
20 to 40 percent of temperature-resistant filler
20 to 30 percent of soft filler
5 to 10 percent of impregnating compound
5 to 15 percent of solid lubricant
5 to 15 percent of liquid lubricant
Wherein,
the temperature-resistant filler in this embodiment is a mixture of silica fume (the silica fume in this embodiment is 75% by mass) and raw vermiculite (the raw vermiculite in this embodiment is 25% by mass), and may also include chromium oxide, zirconium oxide, and aluminum oxide, where the chromium oxide, zirconium oxide, and aluminum oxide are all 0% by mass in this embodiment;
the proportion of the chromium oxide, the zirconium oxide and the aluminum oxide can be improved to adapt to different temperature requirements.
The soft filler is silicon rubber, and of course, phenolic resin or silicon rubber and phenolic resin can be used according to the proportion of 1: 1, mixing the mixture;
the impregnating compound in this embodiment is trimethoxy silane, but methylene silane or polytetrafluoroethylene emulsion may also be used;
the solid lubricant in this embodiment is a mixture of graphite (55% by mass of graphite in this embodiment) and molybdenum disulfide (45% by mass of molybdenum disulfide in this embodiment), and it is needless to say that zinc oxide and polytetrafluoroethylene powder may be added, and both the oxidizing property and the polytetrafluoroethylene powder in this embodiment are 0% by mass;
the liquid lubricant in this embodiment is isooctyl oleate, although oleyl oleate or PAO poly a dilute hydrocarbon synthetic oil may be used.
The temperature-resistant filler of the embodiment comprises the following components in percentage by mass: 50-75% of silica fume, 25-50% of raw vermiculite, 0-10% of alumina, 0-10% of chromic oxide and 0-10% of zirconium oxide.
The particle size of the silica fume in the embodiment is 575 to 825 meshes, and preferably between 600 meshes and 700 meshes.
The solid lubricant of the embodiment comprises the following components in percentage by mass: graphite, molybdenum disulfide, 0-15% of polytetrafluoroethylene powder and 0-10% of zinc oxide.
The material is prepared by the following steps:
(1) heating the kneader to 160 ℃, adding the soft filler, and stirring for 15-20 min;
(2) sequentially adding the temperature-resistant filler, the solid lubricant and the liquid lubricant into a dispersion kettle, stirring at a high speed of 800 rpm, and uniformly mixing for 10-15 min; heating at 100 deg.C while mixing, and introducing nitrogen as protective gas;
(3) adding the mixture obtained in the step (2) into the soft filler treated in the step (1), and fully mixing and stirring until no obvious layering exists between the mixture and the soft filler;
(4) putting the mixture obtained in the step (3) into an oven to be dried for 2 hours at 60 ℃, then heating to 80 ℃ to be dried for 2 hours, then heating to 100 ℃ to be dried for 2 hours, and finally heating to 120 ℃ to be dried for 2 hours; if the heating and mixing in the step (2) are carried out, the drying time of each temperature section can be set to be 1 hour;
(5) immersing the material finally dried in the step (4) into the impregnating compound for 12-36 hours;
(6) and (5) taking out the material infiltrated in the step (5), and air-drying for 48 hours to obtain the required high-temperature-resistant self-lubricating soft filler.
The present invention is not limited to the above-described embodiments. All technical solutions formed by equivalent substitutions fall within the protection scope of the claims of the present invention.
Claims (4)
1. The high-temperature-resistant self-lubricating soft filler is characterized by comprising the following components in percentage by mass:
20 to 40 percent of temperature-resistant filler
20 to 30 percent of soft filler
5 to 10 percent of impregnating compound
5 to 15 percent of solid lubricant
5 to 15 percent of liquid lubricant
Wherein,
the temperature-resistant filler is a mixture of at least two of silica fume, raw vermiculite, alumina, chromium oxide and zirconium oxide;
the soft filler is one or two of silicon rubber or phenolic resin;
the impregnating compound is one of trimethoxy silane, methylene silane or polytetrafluoroethylene emulsion;
the solid lubricant is one or a mixture of more of graphite, molybdenum disulfide, polytetrafluoroethylene powder or zinc oxide;
the liquid lubricant is one of isooctyl alcohol oleate, oleyl alcohol oleate or PAO poly alpha dilute hydrocarbon synthetic oil.
2. The high temperature resistant self-lubricating wadding of claim 1, wherein: the temperature-resistant filler comprises the following components in percentage by mass: 50-75% of silica fume, 25-50% of raw vermiculite, 0-10% of alumina, 0-10% of chromic oxide and 0-10% of zirconium oxide.
3. The high temperature resistant self-lubricating wadding of claim 2, wherein: the particle size of the silica fume is 575-825 meshes.
4. A high temperature resistant self-lubricating wadding according to claim 1, 2 or 3, wherein: the solid lubricant comprises the following components in percentage by mass: 20-55% of graphite, 20-45% of molybdenum disulfide, 0-15% of polytetrafluoroethylene powder and 0-10% of zinc oxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410368371.5A CN105318006A (en) | 2014-07-30 | 2014-07-30 | High-temperature-resistant and self-lubricating soft packing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410368371.5A CN105318006A (en) | 2014-07-30 | 2014-07-30 | High-temperature-resistant and self-lubricating soft packing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105318006A true CN105318006A (en) | 2016-02-10 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410368371.5A Pending CN105318006A (en) | 2014-07-30 | 2014-07-30 | High-temperature-resistant and self-lubricating soft packing |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1844291A (en) * | 2006-04-30 | 2006-10-11 | 长春蓝天密封技术开发有限公司 | Non-asbestos static sealing materials and products thereof |
| CN102585763A (en) * | 2011-01-11 | 2012-07-18 | 宝山钢铁股份有限公司 | Refractory seal soft packing and preparation method for refractory seal soft packing |
| US20120228832A1 (en) * | 2011-03-11 | 2012-09-13 | Slade, Inc. | Flexible flow control bushing |
| CN103351574A (en) * | 2013-06-03 | 2013-10-16 | 海盐华强树脂有限公司 | Method for preparing short fiber reinforced friction material through adopting long fibers |
| CN103602311A (en) * | 2013-09-27 | 2014-02-26 | 马士民 | Recyclable flexible nanometer sealing filler |
| CN104212562A (en) * | 2014-07-30 | 2014-12-17 | 苏州通力电气有限公司 | High-temperature-resistant self-lubricating soft filling material and preparation method thereof |
-
2014
- 2014-07-30 CN CN201410368371.5A patent/CN105318006A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1844291A (en) * | 2006-04-30 | 2006-10-11 | 长春蓝天密封技术开发有限公司 | Non-asbestos static sealing materials and products thereof |
| CN102585763A (en) * | 2011-01-11 | 2012-07-18 | 宝山钢铁股份有限公司 | Refractory seal soft packing and preparation method for refractory seal soft packing |
| US20120228832A1 (en) * | 2011-03-11 | 2012-09-13 | Slade, Inc. | Flexible flow control bushing |
| CN103351574A (en) * | 2013-06-03 | 2013-10-16 | 海盐华强树脂有限公司 | Method for preparing short fiber reinforced friction material through adopting long fibers |
| CN103602311A (en) * | 2013-09-27 | 2014-02-26 | 马士民 | Recyclable flexible nanometer sealing filler |
| CN104212562A (en) * | 2014-07-30 | 2014-12-17 | 苏州通力电气有限公司 | High-temperature-resistant self-lubricating soft filling material and preparation method thereof |
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Application publication date: 20160210 |