CN105238529A - Molybdenum disulfide lithium-based lubricating grease and preparation method therefor - Google Patents
Molybdenum disulfide lithium-based lubricating grease and preparation method therefor Download PDFInfo
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- CN105238529A CN105238529A CN201510723210.8A CN201510723210A CN105238529A CN 105238529 A CN105238529 A CN 105238529A CN 201510723210 A CN201510723210 A CN 201510723210A CN 105238529 A CN105238529 A CN 105238529A
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Abstract
The invention provides molybdenum disulfide lithium-based lubricating grease which comprises the following raw materials in parts by weight: 88-94 parts of base oil, 18-26 parts of intermediate oil, 2.3-2.7 parts of lithium hydroxide, 11-14 parts of an acid for saponification, 0.6-1.0 part of an antioxidant, 1.2-1.7 parts of an extreme pressure wear resistant, 0.2-0.4 part of hollow microspheres, 0.3-0.6 part of sorbitan monostearate, 2.1-3.6 parts of molybdenum disulfide, 1.4-1.8 parts of polytetrafluoroethylene, 1.0-1.3 parts of an antirust agent and 11-13 parts of water. The invention further provides a preparation method for the lubricating grease. According to the molybdenum disulfide lithium-based lubricating grease prepared by the preparation method provided by the invention, the NLGI consistence is #3; the lubricating grease is non-corrosive to metals; a copper sheet is free of green or black change at 100 DEG C for 24 hours with the lubricating grease; the anti-corrosion property reaches level 1 at 52 DEG C for 48 hours; the worked cone penetration (0.1mm) is 238-242.
Description
Technical field
The invention belongs to technical field of organic synthesis, be specifically related to a kind of grease based on molybdenum disulfide lithium and preparation method thereof.
Background technology
Existing lubricating oil mainly adds the blending of various additive with lubricant base and forms, molybdenumdisulphide is a kind of solid lubricant, its stability is very high, be insoluble to oil, it is applied mainly to be limited to and makes an addition in lubricating grease or directly add in mechanical means fuel tank, its defect easily precipitates faults such as resulting in blockage, can not make processed oil and sell; The molten Mo of oil of external production is all liquid products, makes an addition to molybdenum content in lubricating oil too low, DeGrain, and traditional molybdenumdisulphide lithium saponify is single soap base grease, Shortcomings in some performances, can not meet some industrial needs.
Existing molybdenumdisulphide lithium base No. 3 lubricating grease, have the following disadvantages:
(1) frictional coefficient is comparatively large, and for the lubrication at mechanical friction position, mechanical wear rate is higher;
(2) extreme pressure property is poor;
(3) it is short to change the fat cycle;
(4) steam output is large;
(5) dropping point is difficult to improve.
Summary of the invention
The present invention, for solving above technical problem, provides a kind of grease based on molybdenum disulfide lithium and preparation method thereof,
To realize following goal of the invention:
(1) grease based on molybdenum disulfide lithium prepared of the present invention, NLGI denseness is No. 3; To metal non-corrosiveness, 100 DEG C, 24h, copper sheet redgreen or black change; 52 DEG C, 48h, non-corrosibility is 1 grade, and Drawing cone in-degree (0.1mm) is 238-242;
(2) grease based on molybdenum disulfide lithium prepared of the present invention, frictional coefficient is little, and for the lubrication at mechanical friction position, mechanical wear rate is low;
(3) grease based on molybdenum disulfide lithium prepared of the present invention, extreme pressure property is good;
(4) grease based on molybdenum disulfide lithium prepared of the present invention, it is long to change the fat cycle;
(5) grease based on molybdenum disulfide lithium prepared of the present invention, steam output is little;
(6) grease based on molybdenum disulfide lithium prepared of the present invention, dropping point is high.
For solving the problem, the present invention by the following technical solutions:
A kind of grease based on molybdenum disulfide lithium, it is characterized in that: with parts by weight, each raw material comprises: base oil 88-94 part, middle oil 18-26 part, lithium hydroxide 2.3-2.7 part, saponification are with sour 11-14 part, antioxidant 0.6-1.0 part, extreme pressure anti-wear additives 1.2-1.7 part, cenosphere 0.2-0.4 part, sorbitol monostearate 0.3-0.6 part, molybdenumdisulphide 2.1-3.6 part, tetrafluoroethylene 1.4-1.8 part, rust-preventive agent 1.0-1.3 part, water 11-13 part.
Below the further improvement to technique scheme:
With parts by weight, each raw material comprises: base oil 90 parts, middle oil 20 parts, lithium hydroxide 2.5 parts, saponification acid 12 parts, antioxidant 0.8 part, extreme pressure anti-wear additives 1.5 parts, cenosphere 0.3 part, sorbitol monostearate 0.5 part, molybdenumdisulphide 2.5 parts, tetrafluoroethylene 1.6 parts, rust-preventive agent 1.2 parts, 12 parts, water.
Described base oil, the density of 20 DEG C is 0.881kg/cm
3, 100 DEG C of kinematic viscosity are 31.4mm
2/ s, flash-point is 280 DEG C, and pour point is-18 DEG C, and viscosity index is 85.
Described middle oil, 100 DEG C of kinematic viscosity are 31.4mm
2/ s, flash-point is 302 DEG C, and pour point is-19 DEG C, and viscosity index is 95.
Described saponification acid comprises terephthalic acid, naphthenic acid, Phenylsulfonic acid, and mass ratio is 4:3:1.
Described cenosphere, hardness reaches Mohs 5-7, and particle diameter is 2.5 μm, and proportion is that 1.3, Shui divides Han Liang≤0.2%, and ultimate compression strength is 4500kg/cm
2, thermal conductivity is 0.02kcal/m.h. DEG C, and tap density is 1.2g/cm
3.
Described molybdenumdisulphide, active constituent content is 98wt%, and fineness is 600 orders, and hardness is 1.5, and loss on ignition is 18%, and frictional coefficient is 0.08.
A preparation method for grease based on molybdenum disulfide lithium, comprises reinforced, saponification reaction, exhaust, high temperature refining.
Described saponification reaction, is warming up to 90 DEG C, and keep homo(io)thermism, saponification pressure is 0.38MPa, and the reaction times is 17 minutes.
Compared with prior art, beneficial effect of the present invention is:
(1) grease based on molybdenum disulfide lithium prepared of the present invention, NLGI denseness is No. 3; To metal non-corrosiveness, 100 DEG C, 24h, copper sheet redgreen or black change; 52 DEG C, 48h, non-corrosibility is 1 grade, and Drawing cone in-degree (0.1mm) is 238-242.
(2) grease based on molybdenum disulfide lithium prepared of the present invention, frictional coefficient is little, and at 150 DEG C, frictional coefficient is 0.03-0.038; For the lubrication at mechanical friction position, mechanical wear rate is low, and at 150 DEG C, mechanical wear rate is 5.8-6.12 × 10
-5mm
3/ min.
(3) grease based on molybdenum disulfide lithium prepared of the present invention, extreme pressure property is good, and extreme pressure property (terraced Mu Kenfa) OK value is 220-226N.
(4) grease based on molybdenum disulfide lithium prepared of the present invention, it is long to change the fat cycle, changes fat cycle stretch-out 1.3-1.6 doubly.
(5) grease based on molybdenum disulfide lithium prepared of the present invention, steam output is little, and steam output (99 DEG C, 22h) is 0.8-1.2%.
(6) grease based on molybdenum disulfide lithium prepared of the present invention, dropping point is 198-207 DEG C.
Embodiment
Below the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.
embodiment 1 one kinds of grease based on molybdenum disulfide lithiums
Described grease based on molybdenum disulfide lithium, with parts by weight, each raw material comprises: base oil 88 parts, middle oil 18 parts, lithium hydroxide 2.3 parts, saponification acid 11 parts, antioxidant 0.6 part, extreme pressure anti-wear additives 1.2 parts, cenosphere 0.2 part, sorbitol monostearate 0.3 part, molybdenumdisulphide 2.1 parts, tetrafluoroethylene 1.4 parts, rust-preventive agent 1.0 parts, 11 parts, water.
Described base oil, model 150BSM, the density of 20 DEG C is 0.881kg/cm
3, 100 DEG C of kinematic viscosity are 31.4mm
2/ s, flash-point is 280 DEG C, and pour point is-18 DEG C, and viscosity index is 85, and color (No. Sai Shi) is+30;
Described middle oil, model is 150BS, and 100 DEG C of kinematic viscosity are 31.4mm
2/ s, flash-point is 302 DEG C, and pour point is-19 DEG C, and viscosity index is 95, and color (No. Sai Shi) is+30.
Described saponification acid comprises terephthalic acid, naphthenic acid, Phenylsulfonic acid, and mass ratio is 4:3:1.
Described cenosphere, hardness reaches Mohs 5-7, and model is K-1, and particle diameter is 2.5 μm, and proportion is that 1.3, Shui divides Han Liang≤0.2%, and ultimate compression strength is 4500kg/cm
2, thermal conductivity is 0.02kcal/m.h. DEG C, and tap density is 1.2g/cm
3.
Described molybdenumdisulphide, active constituent content is 98wt%, and fineness is 600 orders, and hardness is 1.5, and loss on ignition is 18%, and frictional coefficient is 0.08.
Described antioxidant comprises Octabenzone, 4-benzoyloxy-2,2,6,6-tetramethyl piperidine, and mass ratio is 1:1.
Described tetrafluoroethylene, molecular weight is 8000, and decomposition temperature is 360 DEG C, median size D50≤5 μm, and Biao sees Mi Du≤450g/l, and frictional coefficient is 0.016.
Described extreme-pressure wear-resistant agent, be potassium metaborate, boron oxide, mass ratio is 2:1.
Described rust-preventive agent is barium mahogany sulfonate.
embodiment 2 one kinds of grease based on molybdenum disulfide lithiums
Adopt the raw material described in embodiment 1, only change the raw material composition of lubricating grease, change into:
Described grease based on molybdenum disulfide lithium, with parts by weight, each raw material comprises:
Base oil 90 parts, middle oil 20 parts, lithium hydroxide 2.5 parts, saponification acid 12 parts, antioxidant 0.8 part, extreme pressure anti-wear additives 1.5 parts, cenosphere 0.3 part, sorbitol monostearate 0.5 part, molybdenumdisulphide 2.5 parts, tetrafluoroethylene 1.6 parts, rust-preventive agent 1.2 parts, 12 parts, water.
embodiment 3 one kinds of grease based on molybdenum disulfide lithiums
Adopt the raw material described in embodiment 1, only change the raw material composition of lubricating grease, change into:
Described grease based on molybdenum disulfide lithium, with parts by weight, each raw material comprises:
Base oil 94 parts, middle oil 26 parts, lithium hydroxide 2.7 parts, saponification acid 14 parts, antioxidant 1.0 parts, extreme pressure anti-wear additives 1.7 parts, cenosphere 0.4 part, sorbitol monostearate 0.6 part, molybdenumdisulphide 3.6 parts, tetrafluoroethylene 1.8 parts, rust-preventive agent 1.3 parts, 13 parts, water.
implement the preparation method of 4 one kinds of grease based on molybdenum disulfide lithiums
comprise the following steps:
(1) raw material is taken
According to formula, take each raw material.
(2) reinforced
In saponification still, add base oil, stir, stirring velocity is 1800r/min, opens thermal oil valve and heats up; When temperature reaches 50 DEG C, add cenosphere, sorbitol monostearate, tetrafluoroethylene, when temperature reaches 67 DEG C, add saponification acid, when being warmed up to 75 DEG C, add lithium hydroxide, water, then cover saponification still mouth, open thermal oil valve and heat up.
(3) saponification reaction
Be warming up to 90 DEG C, keep homo(io)thermism, saponification pressure is 0.38MPa, and the reaction times is 17 minutes.
(4) be vented
When pressure reaches 0.43MPa, start exhaust, in exhaust process, temperature controls at 160 DEG C, and after exhaust, temperature in the kettle controls below 168 DEG C, and exhaust velocity is 0.55m
3/ min.
(5) high temperature refining
Drain gas follow-up temperature of continuing rising, temperature adds middle oil after reaching 172 DEG C, and refuel speed control at 60kg/min, temperature in the kettle remains on 175 DEG C, keeps 10 minutes; When increasing the temperature to 215 DEG C, close thermal oil valve, be incubated 4 minutes.
(6) chilling
Open still bottom valve, material is proceeded to chilling still, carry out quenching, quench temperature controls at 165 DEG C, and material reached this temperature in 5 minutes.
(7) other compositions are added
Start and stir, stirring velocity is 700r/min, start recycle pump, cooling oil is added in chilling still chuck, refuel speed control at 69kg/min, and volume read-out is 28% of material total amount, when near 123 DEG C of temperature of charge, add antioxidant, extreme pressure anti-wear additives, molybdenumdisulphide, rust-preventive agent, circulation stirring 22 minutes under the stirring velocity of 650r/min.
(8) degassed, homogeneous
Degassing vessel vacuum pressure is-0.085MPa, and homogenization pressure remains on 25MPa, and temperature is 123 DEG C, and it is degassed to carry out homogeneous, obtains grease based on molybdenum disulfide lithium of the present invention.
Grease based on molybdenum disulfide lithium prepared by the present invention, NLGI denseness is No. 3; To metal non-corrosiveness, 100 DEG C, 24h, copper sheet redgreen or black change; 52 DEG C, 48h, non-corrosibility is 1 grade.
Various aspects of performance index is as shown in the table:
Except as otherwise noted, the percentage ratio adopted in the present invention is weight percentage, and ratio of the present invention, is mass ratio.
More than show and describe ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification sheets just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (9)
1. a grease based on molybdenum disulfide lithium, it is characterized in that: with parts by weight, each raw material comprises: base oil 88-94 part, middle oil 18-26 part, lithium hydroxide 2.3-2.7 part, saponification are with sour 11-14 part, antioxidant 0.6-1.0 part, extreme pressure anti-wear additives 1.2-1.7 part, cenosphere 0.2-0.4 part, sorbitol monostearate 0.3-0.6 part, molybdenumdisulphide 2.1-3.6 part, tetrafluoroethylene 1.4-1.8 part, rust-preventive agent 1.0-1.3 part, water 11-13 part.
2. a kind of grease based on molybdenum disulfide lithium according to claim 1, it is characterized in that: with parts by weight, each raw material comprises: base oil 90 parts, middle oil 20 parts, lithium hydroxide 2.5 parts, saponification acid 12 parts, antioxidant 0.8 part, extreme pressure anti-wear additives 1.5 parts, cenosphere 0.3 part, sorbitol monostearate 0.5 part, molybdenumdisulphide 2.5 parts, tetrafluoroethylene 1.6 parts, rust-preventive agent 1.2 parts, 12 parts, water.
3. a kind of grease based on molybdenum disulfide lithium according to claim 1 and 2, is characterized in that: described base oil, and the density of 20 DEG C is 0.881kg/cm
3, 100 DEG C of kinematic viscosity are 31.4mm
2/ s, flash-point is 280 DEG C, and pour point is-18 DEG C, and viscosity index is 85.
4. a kind of grease based on molybdenum disulfide lithium according to claim 1 and 2, is characterized in that: described middle oil, 100 DEG C of kinematic viscosity are 31.4mm
2/ s, flash-point is 302 DEG C, and pour point is-19 DEG C, and viscosity index is 95.
5. a kind of grease based on molybdenum disulfide lithium according to claim 1 and 2, is characterized in that: described saponification acid comprises terephthalic acid, naphthenic acid, Phenylsulfonic acid, and mass ratio is 4:3:1.
6. a kind of grease based on molybdenum disulfide lithium according to claim 1 and 2, it is characterized in that: described cenosphere, hardness reaches Mohs 5-7, and particle diameter is 2.5 μm, and proportion is that 1.3, Shui divides Han Liang≤0.2%, and ultimate compression strength is 4500kg/cm
2, thermal conductivity is 0.02kcal/m.h. DEG C, and tap density is 1.2g/cm
3.
7. a kind of grease based on molybdenum disulfide lithium according to claim 1 and 2, it is characterized in that: described molybdenumdisulphide, active constituent content is 98wt%, fineness is 600 orders, and hardness is 1.5, and loss on ignition is 18%, and frictional coefficient is 0.08.
8. a preparation method for grease based on molybdenum disulfide lithium, is characterized in that: comprise reinforced, saponification reaction, exhaust, high temperature refining.
9. the preparation method of a kind of grease based on molybdenum disulfide lithium according to claim 8, is characterized in that: described saponification reaction, is warming up to 90 DEG C, and keep homo(io)thermism, saponification pressure is 0.38MPa, and the reaction times is 17 minutes.
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| CN201510723210.8A CN105238529A (en) | 2015-10-29 | 2015-10-29 | Molybdenum disulfide lithium-based lubricating grease and preparation method therefor |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1292060A (en) * | 1998-02-25 | 2001-04-18 | 瓦丁汽车有限公司 | Rotary-piston machine |
| CN1804014A (en) * | 2005-12-06 | 2006-07-19 | 中国石油天然气集团公司 | Dedicated thread compound for casing drilling |
| CN1292060C (en) * | 2002-08-21 | 2006-12-27 | 西铁城钟表株式会社 | Grease composition for precision equipment and timepiece containing the same |
| CN101880583A (en) * | 2010-07-02 | 2010-11-10 | 邹鸣 | Solid-liquid phase composite lubricating grease and preparation method thereof |
| CN103320206A (en) * | 2013-06-28 | 2013-09-25 | 合肥工业大学 | Lubricating grease for space aircraft and preparation method thereof |
| CN103614199A (en) * | 2013-11-26 | 2014-03-05 | 天津市津冠润滑脂有限公司 | Preparation method of maintenance agent for lubricating and protecting wire rope |
| CN104560264A (en) * | 2013-10-28 | 2015-04-29 | 中国石油化工股份有限公司 | Composite lithium-based lubricating grease and preparation method thereof |
-
2015
- 2015-10-29 CN CN201510723210.8A patent/CN105238529A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1292060A (en) * | 1998-02-25 | 2001-04-18 | 瓦丁汽车有限公司 | Rotary-piston machine |
| CN1292060C (en) * | 2002-08-21 | 2006-12-27 | 西铁城钟表株式会社 | Grease composition for precision equipment and timepiece containing the same |
| CN1804014A (en) * | 2005-12-06 | 2006-07-19 | 中国石油天然气集团公司 | Dedicated thread compound for casing drilling |
| CN101880583A (en) * | 2010-07-02 | 2010-11-10 | 邹鸣 | Solid-liquid phase composite lubricating grease and preparation method thereof |
| CN103320206A (en) * | 2013-06-28 | 2013-09-25 | 合肥工业大学 | Lubricating grease for space aircraft and preparation method thereof |
| CN104560264A (en) * | 2013-10-28 | 2015-04-29 | 中国石油化工股份有限公司 | Composite lithium-based lubricating grease and preparation method thereof |
| CN103614199A (en) * | 2013-11-26 | 2014-03-05 | 天津市津冠润滑脂有限公司 | Preparation method of maintenance agent for lubricating and protecting wire rope |
Non-Patent Citations (2)
| Title |
|---|
| 朱廷彬主编: "《润滑脂技术大全》", 30 April 2005, 中国石化出版社 * |
| 黄文轩编著: "《润滑剂添加剂性质及应用》", 31 May 2012, 中国石化出版社 * |
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Effective date of abandoning: 20190104 |
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