CN102433202B - Hydroxyl lubricating grease composition - Google Patents
Hydroxyl lubricating grease composition Download PDFInfo
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- CN102433202B CN102433202B CN 201110322194 CN201110322194A CN102433202B CN 102433202 B CN102433202 B CN 102433202B CN 201110322194 CN201110322194 CN 201110322194 CN 201110322194 A CN201110322194 A CN 201110322194A CN 102433202 B CN102433202 B CN 102433202B
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Abstract
The invention provides a hydroxyl lubricating grease composition, comprising a thickening agent, base oil and an additive. The total weight of the composition is used as a reference, and the content of each component is as follows: (1) 35.0-65.0% of cerate, (2) 30.0-60.0% of low-freezing-point base oil, (3) 0.5-6.8% of polymethacrylate, and (4) 0.3-1.2% of 2,6-ditert-butyl-4-methylphenol. In the invention, low-freezing-point base oil and polymethacrylate are formulated and used for preparing a specific low-temperature-resistant hydroxyl lubricating grease with good low-temperature performance and high-temperature adhesivity, so that the embrittlement problem of the present product in a temperature range of minus 40 to minus 55 DEG C is efficiently solved. The dropping point of the lubricating grease disclosed by the invention is greater than 60 DEG C, and capable of satisfying the protection and lubrication demands on the surfaces of various metal tools, mechanical components and parts, as well as some mechanical equipments in a low-temperature range of minus 40 to minus 55 DEG C and in a wide-temperature range of minus 55 to plus 50 DEG C.
Description
Technical field
The invention belongs to technical field of lubricating grease, particularly relate to a kind of hydr ocarbon-based grease composition that can in-40～-55 ℃ of low temperature and-55～50 ℃ of wide temperature ranges, use.
Background technology
Lubricating grease comprises nonsoap grease such as soap base greases such as lithium saponify, calcium grease, compositing lithio ester and areidofat, wilkinite fat, alkyl fat.Hydr ocarbon-based grease be with hydrocarbon solid etc. for making viscosifying agent, be distributed in the base oil and the lubricating grease of making.Hydrocarbon solid comprises paraffin (be main component with alkane), Microcrystalline Wax (be main component with naphthenic hydrocarbon and isoparaffin) or slack wax (being the higher wax of resulting oleaginousness from the petroleum fractions de-oiling) etc.This lubricating grease has good chemical stability and colloid stability, and is water insoluble, meets water and do not produce emulsion, and effective to Metal Protection, shortcoming is that dropping point is lower.Mainly as the protection fat of metal parts, also when working temperature is not high as anti-attrition lubricating grease.The surface of metal tools, component of machine and some mechanized equipment be can be applied in, anticorrosion, antirust, waterproof and dustproof, sealing, effect such as lubricated played.
Existing various hydr ocarbon-based grease kind mainly comprises industrial vaseline, wire rope surface grease, wireline hemp core fat, big gun lubricating grease, waterproof sealing fat etc.The use temperature scope of above-mentioned lubricating grease is generally-30～50 ℃.Be lower than-30 ℃ in temperature, when particularly temperature reached-40～-55 ℃ of scopes, the embrittlement phenomenon all can take place in the metallic surface in these products, thereby lost protection and the lubricating function that itself has.
For some mechanized equipment that need under-40～-55 ℃ of scope cold condition, seal up for safekeeping or use, as the outer hoisting machinery of cannon gun tube, severe cold compartment with the protection of wireline etc. with lubricated, just need special low temperature resistant hydr ocarbon-based grease.In other occasions, such as the waterproof sealing fat that uses on some refrigeration equipments, also require not embrittlement of adipose membrane under low temperature environment, in order to avoid influence the waterproof sealing effect.The approach that addresses these problems need realize by using the more excellent hydr ocarbon-based grease of resistance to low temperature.
CN 1160751A " hydr ocarbon-based grease and preparation method thereof ", having proposed direct is the processing method that main raw material prepares hydr ocarbon-based grease with vacuum distillate, can simplify working process, and reduces product cost.But this invention belongs to the manufacture method of product, does not relate to the improvement of lubricating grease low-temperature performance.
CN 1580214A " hydr ocarbon-based grease composition " proposes to adopt the macromolecule polypropylene polymkeric substance that is soluble in oil, can improve the hydr ocarbon-based grease dropping point, has solved original hydr ocarbon-based grease dropping point problem on the low side.But this invention does not relate to the improvement of lubricating grease low-temperature performance yet.
Solve the problem of currently available products technology lower temperature resistance difference, need a kind of hydr ocarbon-based grease that good result of use can be arranged in-40～-55 ℃ of low temperature and-55～50 ℃ of wide temperature ranges.
Summary of the invention
Purpose of the present invention, provide a kind of hydr ocarbon-based grease with excellent in resistance low-temperature performance, guarantee product not embrittlement under-40～-55 ℃ low temperature environment, and satisfy surfacecti proteon and the lubricating requirement of-40～-55 ℃ of low temperature and-55～50 ℃ of interior metal tools of wide temperature range, component of machine and some mechanized equipment.
Low temperature resistant hydr ocarbon-based grease composition provided by the invention comprises viscosifying agent, base oil and additive.Viscosifying agent is slack wax, and base oil is the low base oil that coagulates, and additive is polymethacrylate and 2,6 ditertiary butyl p cresol.Be benchmark with the composition gross weight, each component concentration is:
(1) slack wax 35.0～65.0%,
(2) the low base oil 30.0～60.0% that coagulates,
(3) polymethacrylate 0.5～6.8%,
(4) 2,6 ditertiary butyl p cresol 0.3～1.2%.
The preferred composition gross weight is benchmark, and each component concentration is:
(1) slack wax 37.0～63.0%,
(2) the low base oil 32.0～58.0% that coagulates,
(3) polymethacrylate 0.5～6.0%,
(4) 2,6 ditertiary butyl p cresol 0.4～1.0%.
Said slack wax is the by product that solvent dewaxing process is produced lubricant base, and main component is alkane, isoparaffin and the naphthenic hydrocarbon of solid, also contains part mineral base oil and a spot of colloid, bituminous matter etc.Has stable performance under the high-low temperature resistant condition, characteristics such as strong adhesion, water-tolerant.Dropping point is 65～80 ℃.70～80 ℃ of preferred dropping points.
The said low base oil zero pour of coagulating all requires below-30 ℃.100 ℃ of kinematic viscosity are 6.0～20.0mm
2/ s.Preferred movement viscosity 7.0～18.0mm
2/ s.The DRA/A refrigerator oil that comprises the naphthenic base oils that reaches Sinopec Q/SHR001-1995 standard or use this base oil mediation to form, and the Poly alpha Olefins (PAO) synthetic oil of homemade or import.
Said polymethacrylate is that outward appearance is colourless industrial goods to faint yellow dope.The domestic petroleum additive is unified code name T602.All can have good pour point depression effect to all types of base oils, improve the product low-temperature performance, also have good tackifying ability, can improve the tack under the product high temperature.
Said 2,6 ditertiary butyl p cresol is that outward appearance is the industrial goods of white crystals.The domestic petroleum additive is unified code name T501.
Production technique of the present invention is: at first slack wax is dropped in the still, add the low base oil that coagulates again, stir and heat up.When temperature is raised to 130～150 ℃, stop heating, keep temperature to stir 5～20 minutes.The cooling material.Add polymethacrylate when temperature reaches 100～120 ℃, add 2,6 ditertiary butyl p cresol during 90～100 ℃ of temperature.Stirred 10～20 minutes, can go out still is finished product.
The characteristics of lubricating grease of the present invention, be to have adopted low base oil with fixed attention and the composite use of polymethacrylate to make specific low temperature resistant hydr ocarbon-based grease, have good low-temperature performance and high temperature adhesion, efficiently solve currently available products in the embrittlement problem of-40～-55 ℃ of scopes.Grease dropping point of the present invention is greater than 60 ℃, and coating is convenient, and production cost is low, can satisfy in-40～-55 ℃ of low temperature and-55～50 ℃ of wide temperature ranges protection and the lubricating requirement on various metal tools, component of machine and some mechanized equipment surface.
Embodiment
Example 1
At first the slack wax 505g with 70 ℃ of dropping points drops in the still, adds naphthenic base oils (100 ℃ of kinematic viscosity 6.0mm again
2/ s, condensation point-33 ℃) 484g.Stir and heat up.When temperature is raised to 140～150 ℃, stop heating, keep temperature to stir 12 minutes.The cooling material.Add methacrylic ester (T602) 5g when temperature reaches 100～110 ℃, add 2,6 ditertiary butyl p cresol (T501) 6g during 90～95 ℃ of temperature.Stirred 15 minutes, and went out still and obtain finished product.Its performance is listed in table 1.
Example 2
The slack wax 602g of 76 ℃ of dropping points is dropped in the still, add naphthenic base oils (100 ℃ of kinematic viscosity 7.0mm
2/ s, condensation point-32 ℃) 335g.Stir and heat up.When temperature is raised to 130～140 ℃, stop heating, keep temperature to stir 5 minutes.The cooling material.Add polymethacrylate (T602) 60g when temperature reaches 115～120 ℃, add 2,6 ditertiary butyl p cresol (T501) 3g during 95～100 ℃ of temperature.Stirred 20 minutes, and went out still and obtain finished product.Its performance is listed in table 1.
Example 3
The slack wax 350g of 65 ℃ of dropping points is dropped in the still, add DRA/A refrigerator oil (100 ℃ of kinematic viscosity 6.8mm again
2/ s, condensation point-37 ℃) 600g.Stir and heat up.When temperature is raised to 130～140 ℃, stop heating, keep temperature to stir 10 minutes.The cooling material.Add polymethacrylate (T602) 42g when temperature reaches 105～115 ℃, add 2,6 ditertiary butyl p cresol (T501) 8g during 95～100 ℃ of temperature.Stirred 10 minutes, can go out still is finished product.Its performance is listed in table 1.
Example 4
At first the slack wax 650g with 76 ℃ of dropping points drops in the still, adds Poly alpha Olefins (PAO) synthetic oil (100 ℃ of kinematic viscosity 10.0mm again
2/ s, condensation point-48 ℃) 300g.Stir and heat up.When temperature is raised to 135～145 ℃, stop heating, keep temperature to stir 20 minutes.The cooling material.Add polymethacrylate (T602) 45g when temperature reaches 110～120 ℃, add 2,6 ditertiary butyl p cresol (T501) 5g during 95～100 ℃ of temperature.Stirred 20 minutes, can go out still is finished product.Its performance is listed in table 1.
Example 5
At first the slack wax 470g with 70 ℃ of dropping points drops in the still, adds Poly alpha Olefins (PAO) synthetic oil (100 ℃ of kinematic viscosity 20.0mm again
2/ s, condensation point-39 ℃) 450g.Stir and heat up.When temperature is raised to 135～145 ℃, stop heating, keep temperature to stir 18 minutes.The cooling material.Add polymethacrylate (T602) 68g when temperature reaches 100～105 ℃, add 2,6 ditertiary butyl p cresol (T501) 12g during 90～95 ℃ of temperature.Stirred 13 minutes, and went out still and obtain finished product.Its performance is listed in table 1.
Example 6
At first the slack wax 630g with 80 ℃ of dropping points drops in the still, adds DRA/A refrigerator oil (100 ℃ of kinematic viscosity 7.2mm again
2/ s, condensation point-30 ℃) 320g, stir and heat up.When temperature is raised to 140～150 ℃, stop heating, keep temperature to stir 10 minutes.The cooling material.Add polymethacrylate (T602) 46g when temperature reaches 115～120 ℃, add 2,6 ditertiary butyl p cresol (T501) 4g during 93～98 ℃ of temperature.Stirred 15 minutes, can go out still is finished product.Its performance is listed in table 1.
Example 7
At first the slack wax 370g with 76 ℃ of dropping points drops in the still, adds Poly alpha Olefins (PAO) synthetic oil (100 ℃ of kinematic viscosity 18.0mm again
2/ s, condensation point-40 ℃) 580g, stir and heat up.When temperature is raised to 135～145 ℃, stop heating, keep temperature to stir 16 minutes.The cooling material.Add polymethacrylate (T602) 40g when temperature reaches 100～120 ℃, add 2,6 ditertiary butyl p cresol (T501) 10g during 92～97 ℃ of temperature.Stirred 13 minutes, can go out still is finished product.Its performance is listed in table 1.
Comparative Examples 1
For commercially available for wireline surfacecti proteon and lubricated alkyl fat.Its performance is listed in table 1.
Comparative Examples 2
Be commercially available alkyl fat for the protection of heavy weapons parts.Its performance is listed in the table below 1.
Table 1
As shown in Table 1: the product that the present invention obtains, dropping point, landing test contour warm nature can aspect, suitable with commercially available prod quality level; Aspect barrier propterties such as water soluble acid or alkali, burn into humid heat test, salt-fog test, also suitable with commercially available prod quality level.But aspect low-temperature performance, the excellent product performance that the present invention obtains can reach not embrittlement in-40～-55 ℃ of temperature ranges.The product dropping point that the present invention obtains has better low-temperature performance greater than 60 ℃, can solve the low-temperature embrittleness problem that existing hydr ocarbon-based grease product exists, and can satisfy the service requirements of-40～-55 ℃ of low temperature and-55～50 ℃ of wide temperature ranges.
Claims (2)
1. a hydr ocarbon-based grease composition comprises viscosifying agent, base oil and additive; Viscosifying agent is slack wax, and base oil is low condensation point base oil, and additive is polymethacrylate and 2,6 ditertiary butyl p cresol; Be 100% benchmark with the composition gross weight, each component concentration is:
(1) slack wax 35.0～65.0%,
(2) the low base oil 30.0～60.0% that coagulates,
(3) polymethacrylate 0.5～6.8%,
(4) 2,6 ditertiary butyl p cresol 0.3～1.2%;
Slack wax is the by product that solvent dewaxing process is produced lubricant base; Dropping point is 65～80 ℃; The low base oil that coagulates is that zero pour requires below-30 ℃; 100 ℃ of kinematic viscosity are 6.0～20.0mm
2/ s.
2. according to the described grease composition of claim 1, it is characterized in that:
(1) slack wax 37.0～63.0%,
(2) the low base oil 32.0～58.0% that coagulates,
(3) polymethacrylate 0.5～6.0%,
(4) 2,6 ditertiary butyl p cresol 0.4～1.0%.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110322194 CN102433202B (en) | 2011-10-20 | 2011-10-20 | Hydroxyl lubricating grease composition |
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|---|---|---|---|
| CN 201110322194 CN102433202B (en) | 2011-10-20 | 2011-10-20 | Hydroxyl lubricating grease composition |
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| CN102433202A CN102433202A (en) | 2012-05-02 |
| CN102433202B true CN102433202B (en) | 2013-07-17 |
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| CN103013631A (en) * | 2012-12-06 | 2013-04-03 | 南通市华东润滑设备有限公司 | Lubrication ointment |
| CN103266002B (en) * | 2013-06-06 | 2015-06-10 | 中国人民解放军总装备部军械技术研究所 | Dual-purpose grease composition for rust protection and lubrication, and production method thereof |
| CN110157532A (en) * | 2019-06-05 | 2019-08-23 | 常熟理工学院 | Environment-friendly type wire-rope grease and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101454431A (en) * | 2006-03-31 | 2009-06-10 | 新日本石油株式会社 | Lube base oil, process for production thereof, and lubricating oil composition |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101454431A (en) * | 2006-03-31 | 2009-06-10 | 新日本石油株式会社 | Lube base oil, process for production thereof, and lubricating oil composition |
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