CN101235338A - Open-type gear grease composition - Google Patents
Open-type gear grease composition Download PDFInfo
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Abstract
The invention provides an open gear grease composition, which comprises the following components and the weight percentage contents are that gelatinizer 2-6%, mineral oil 20-60%, synthetic oil 20-60%, antioxidant 0.3-1%, oil solubility anti-wear extreme pressure additive 1-15%, solid additive 3-20% and rust inhibitor 1-3%. The open gear grease composition of the invention does not contain dissolvent and bitumen, which has no harmless to environment, and solves the problems that bitumen-type open gear oil has bad pollution and low-temperature performance, and the flowability of open gear grease is bad. The open gear grease composition has outstanding water resistance, adhesiveness and antiwear and extreme pressure property.
Description
Technical field
The present invention relates to a kind of lubricating oil, specifically, relate to a kind of open-type gear grease composition that is applied to main equipment.
Background technology
The lubricant of exposed gear not only needs good abrasion resistant extreme-pressure, also good adhesivity and suitable flowability properties will be arranged.The exposed gear lubricant mainly contains several big classes such as pitch type exposed gear oil, high viscosity gear oil, open gear lubricatng at present.
The exposed gear oil of bituminous matter and spirit thinned type thereof is the traditional oil product in the exposed gear oil, based on bituminous matter, add certain functional additive, use preceding thermoplastic or add some volatile solvents, spray during use or coat, after the solvent evaporates, existing one deck plastic rubber covers on the flank of tooth, can stop the infringement of wearing and tearing, dust and water.Such as application number is 200410049765.0, denomination of invention is a kind of exposed gear oil, with petroleum pitch base oil, adhesive agent, extreme pressure anti-wear additives and solvent (comprise contain methyl chloride, contain monochloroethane and vinyl-chloride-containing etc.), through the mixed dilution type exposed gear oil that gets, solubilizing agent does not make common exposed gear oil.
Though the bituminous matter gear oil is a tradition oil, it still has the following disadvantages in application: viscosity temperature characteristic is poor, and easily become fragile winter, easily peels off from gear, causes wearing and tearing; When heating up by heating tube, the improper coking or the cracking that may cause lubricant of heating; When adopting mist lubrication, cause the obstruction of fog system easily; Contamination resistance is poor, easily absorbs and retains foul, causes the abrasive wear of gear; Skewness on the flank of tooth, it is loaded down with trivial details to change oil; The lubricant that is thrown out of is difficult to cleaning owing to contain pitch.
After adding solvent,, needn't heat the problem of use, cause atmospheric pollution and potential safety hazard easily after also bringing solvent evaporates, effectively use problems such as composition reduction though it is poor to solve low-temperature fluidity.
Though the high viscosity gear oil does not contain solvent, problem that also can fine solution low-temperature fluidity, adhesivity, oil film thickness still are apparent not enough; Because use the restriction of additive, the abrasion resistant extreme-pressure performance of product can not meet the demands.Owing to rely on a large amount of tackifier of interpolation to improve oil viscosity, the problem that viscosity reduces in use inevitably appears in addition.
Open-type gear grease can be divided into two big classes, and a class is a high-consistency lubricating grease, and a class is a semi-fluid build open-type gear grease.The high-consistency open-type gear grease can form enough oil film strengths by viscosifying agent, is easy under the low temperature disperse, but owing to itself do not possess flowability, is generally used for the lubricated exposed gear system of small hand, also is restricted in application.
The semi-fluid open-type gear grease was all done research both at home and abroad, CN 1552831A provides a kind of 1-4%12-OH of containing lithium stearate, 30-50% mineral oil, the 30-50% polybutene, the multiple ester of the big viscosity of 2-8%, 0.25-0.5% succinic acid half-ester derivative, 2-8% acid phosphoric acid ester fatty amine salt extreme pressure agent, the product of 4-8% oildag; And four ball sintering meet can reach 800kg.But owing to rely on polybutene to increase adhesivity separately, the shearing action of use middle gear can cause adhesivity to descend, and causes the consumption that lubricating grease is thrown out of increases fat.US 5190682 has provided the open-type gear grease of two kinds of PAO base oils of a kind of use, because the high viscosity PAO itself that adopts just has splendid adhesivity, needn't use other adhesivity additives.But compare PAO base oil cost with mineral oil too high, and particularly big viscosity PAO price is higher! Cause this product that very high cost is arranged.
Summary of the invention
The purpose of this invention is to provide a kind of not solvent-laden semi-fluid open-type gear grease composition, have outstanding water resisting property, adhesivity and abrasion resistant extreme-pressure.
In order to realize the object of the invention, a kind of open-type gear grease composition of the present invention comprises following component and weight percentage:
Viscosifying agent 2-6%,
Mineral oil 20-60%,
Synthetic oil 20-60%,
Oxidation inhibitor 0.3-1%,
Oil soluble extreme pressure additive 1-15%,
Solid additive 3-20%,
Rust-preventive agent 1-3%.
Wherein, preferably:
Viscosifying agent 2-5%,
Mineral oil 30-50%,
Synthetic oil 30-50%,
Oxidation inhibitor 0.3-0.5%,
Oil soluble extreme pressure additive 5-15%,
Solid additive 8-20%,
Rust-preventive agent 2-3%.
Described viscosifying agent is one or more mixtures in lithium soap, calcium soap, barium soap, aluminium soap, allophanamide, four ureas, silica gel, compound lithium soap, compound aluminium soap, the composite sulfoacid calcium soap, wherein said lithium soap is the 12-OH lithium stearate, described calcium soap is the 12-OH calcium stearate, described barium soap is the 12-OH barium stearate, described aluminium soap is an aluminum stearate, and described compound aluminium soap is stearic acid and the compound aluminium soap of phenylformic acid.Though use a kind of viscosifying agent to meet the demands,, be good with two kinds of viscosifying agents for improving adhesivity, rust-preventing characteristic and the abrasion resistant extreme-pressure of product.This moment, the water repelling property and the consistency between the viscosifying agent of balance viscosifying agent seemed particularly important.
Described mineral oil is paraffinic base, intermediate base, the cycloalkyl neutral oil that 40 ℃ of viscosity are 30-500cSt; Described synthetic oil is that 40 ℃ of viscosity are the synthetic hydrocarbon of 1000-300000cSt, ester class oil, and described synthetic hydrocarbon is a poly-alpha olefins, polybutene, polyisobutene, the synthetic cylinder stock oil of 65#; Described ester class oil is the multiple ester of big viscosity.The best viscosity of mineral oil is the low pour point paraffin base oil of 100-500cSt, and it is the product of 10000-200000cSt that synthetic oil is preferably selected viscosity for use, so reasonably balance addition and adhesivity.The synthetic oil addition increases, and increases cost accordingly, though the excessive addition of synthetic oil viscosity is less, and the shear stability variation.
Described oxidation inhibitor is pentanoic, alkyl diphenylamine or phenyl α-Nai amine.
Described oil soluble extreme pressure additive is sulfur-bearing, phosphorous type extreme pressure additive, and wherein sulfur-containing additive can be the one or more combination thing in sulfurized fatty, olefine sulfide, sulfide isobutene, benzyl polysulfide, phenyl polysulfide, the dialkyl dithiocarbamate; Phosphor-included additive can be the one or more combination thing in triphenylphosphate, tritolyl phosphate, acid phosphoric acid ester, dialkyl dithiophosphate, straight chain alkanol phosphoric acid ester, the branched alkanol phosphoric acid ester.
Solid additive of the present invention comprises graphite, molybdenumdisulphide, tetrafluoroethylene, tungsten disulfide, trimeric cyanamide, lime carbonate, calcium phosphate, calcium sulfate, barium carbonate, barium sulfate, mica powder.Wherein graphite, molybdenumdisulphide, tungsten disulfide are and meet F-0 or other colloidal solid of F-1 level, and the particle diameter of trimeric cyanamide, lime carbonate, calcium phosphate, calcium sulfate, barium carbonate, barium sulfate, mica powder is less than 50 microns.
Described rust-preventive agent is Sulfonates, naphthenate or benzotriazole; As barium mahogany sulfonate, calcium mahogany sulfonate, dinonyl naphthalene sulfonate barium, oxidized petrolatum barium soap, zinc naphthenate, benzotriazole, methyl benzotriazazole, benzotriazole stearylamine salt.
Open-type gear grease composition of the present invention does not contain solvent and pitch, environmental sound; The existence of solution pitch type exposed gear oil is polluted, low-temperature performance is not good, the mobile poor problem of open-type gear grease.Have outstanding water resisting property, adhesivity, abrasion resistant extreme-pressure.
Embodiment
Following examples are used to illustrate the present invention, but are not used for limiting the scope of the invention.
Embodiment 1-2
The production process of product of the present invention is an example with the 100kg test products, and production process is as follows:
Mineral oil, oxidation inhibitor and the 12-OH lithium stearate of adding about 1/2 are stirred and heated to 210 ℃ in still, and constant temperature kept 10 minutes.
Add an amount of mineral oil, be cooled to 185 ℃, kept 5 minutes.
Be cooled to 140 ℃ with 1 hour, add remaining mineral oil, synthetic oil, 12-OH calcium stearate (barium).
Adding solid additive, sulfur-bearing and phosphor-included additive below 110 ℃, stirring and be cooled to add below 70 ℃ other additives.
Roll three times with triple-roller mill, get product.
The following standard that adopts finished product detects GB/T 269 lubricating grease cone penetration assay methods, GB/T 4929 grease dropping point assay methods, SH/T 0202 lubricating grease extreme pressure property assay method (four ball methods), SH/T 0331 lubricating grease etching test, SH/T 0337 lubricating grease volatile grade assay method, water repelling property employing DIN 51807 methods mensuration.The described products material of embodiment forms and detected result sees Table 1.
Embodiment 3
It is example that the production process of present embodiment is produced product with 2000kg, and production process is as follows:
Add whole approximately mineral oil, oxidation inhibitor and 12-OH calcium stearate in still, be stirred and heated to 140 ℃, constant temperature kept 10 minutes.
Add the silica gel of being fuming, stirred 1 hour.
Add synthetic oil, maintain the temperature at 120 ℃ of circulations and stirred 1 hour, be cooled to below 110 ℃.
Add solid additive, sulfur-bearing and phosphor-included additive then, stir and be cooled to other additives of adding below 70 ℃, stirred 40 minutes.
After filtration, degassing back is with homogenizer homogenizing under 15MPa, both finished product.
Finished product adopts the monitoring method identical with embodiment 1,2 to detect.The raw material of described product is formed and detected result sees Table 1.
Table 1 embodiment 1-3 forms and detected result
| Project | Embodiment 1 | Embodiment 2 | Embodiment 3 | |
| Viscosifying agent | The 12-OH lithium stearate 12-OH calcium stearate 12-OH barium stearate silica gel of being fuming | 3.2 1.0 | 2.6 2.0 | 3.5 2.2 |
| Mineral oil | 500 SN 150 BS | 34 25 | 24.5 23 | 55 |
| Synthetic oil | PAO 1000 ①Polyisobutene Priolube 3986 ② | 20 | 30 | 20 |
| Extreme pressure anti-wear additives | T405A RC 2515 | 2 2 | 3 | 2 |
| LZ 5340MW ③T 306 T 305 | 3.5 | 1 4 | 2 2 1 | |
| Oxidation inhibitor | Pentanoic | 0.3 | 0.3 | 0.5 |
| Solid additive | Oildag F-0 colloid molybdenumdisulphide F-1 | 5 3 | 3 5 | 8 2 |
| Rust-preventive agent | Calcium mahogany sulfonate | 0.7 | 0.8 | 1 |
| Zinc naphthenate | 0.5 | 0.5 | 0.8 | |
| Benzotriazole | 0.3 | 0.3 | ||
| Cone penetration, 25 ℃ of 1/10mm dropping points, ℃ vaporization losses, % | 405 132 0.8 | 368 132 0.5 | 388 141 0.7 | |
| The copper corrosion four-ball test | No black or green the variation | |||
| P BValue, kg P BValue, the kg wear scar diameter, mm water resisting property (51807,90 ℃ of DIN, 3h) | 70＞400 0.4 1 grades | 60＞400 0.4 1 grades | 60＞400 0.4 1 grades | |
Illustrate: 1. PAO 1000 is 1000mm for 100 ℃ of viscosity that Exxonmobil company produces
2The poly alpha olefine synthetic oil of/s,
2. Priolube 3986 is the multiple ester of the big viscosity of Uniqema company production, and 40 ℃ of viscosity are 47000mm
2/ s has better adhesivity,
3. LZ 5340MW is a kind of olefine sulfide series products that contains active sulphur that Lubrizol Corp. produces.
Embodiment 4-6
Basic preparation process is with embodiment 1, and different is that each composition and detected result are as follows:
| Project | Embodiment 4 | Embodiment 5 | Embodiment 6 | |
| Viscosifying agent | The compound aluminium soap complex calcium sulfonate of aluminum stearate soap allophanamide viscosifying agent | 1 1 0 0 | 3 3 | 2 3 |
| Mineral oil | 500 SN 150 BS | 20 0 | 10 10 | 34.2 25 |
| Synthetic oil | PAO 1000 | 20 | 30 | 10 |
| Polyisobutene Priolube 3986 | 20 20 | 5 0 | 10 0 | |
| The extruding anti-wear agent | T 405A RC 2515 LZ 5340MW T 306 T 305 | 10 2.5 1 0 0 | 5 5 2 2 1 | 1 3 1 0 0 |
| Oxidation inhibitor | Alkyl diphenylamine phenyl α-Nai amine | 0.5 0 | 0 1 | 0 0.5 |
| Solid additive | Calcium phosphate mica trimeric cyanamide calcium sulfate oildag | 0 0 0 0 3 | 5 0 0 5 10 | 5 0 2 0 3 |
| Rust-preventive agent | Dinonyl naphthalene sulfonate barium | 1 | 2 | 2 |
| Zinc naphthenate | 0 | 0.7 | 0 | |
| Methyl benzotriazazole | 0 | 0.3 | 0.3 | |
| Cone penetration, 25 ℃ of 1/10mm dropping points, ℃ vaporization losses, % | 372 135 0.7 | 421 190 0.8 | 409 228 0.5 | |
| The copper corrosion four-ball test | No black or green the variation | |||
| P BValue, kg P BValue, the kg wear scar diameter, mm water resisting property (51807,90 ℃ of DIN, 3h) | 50＞400 0.5 1 grades | 50＞400 0.45 1 grades | 90＞400 0.4 1 grades | |
Open-type gear grease composition of the present invention has outstanding water resisting property, adhesivity, abrasion resistant extreme-pressure; Owing to do not contain solvent and pitch, environmental sound.
Though above the present invention is described in detail with a general description of the specific embodiments, on basis of the present invention, can make some modifications or improvements it, this will be apparent to those skilled in the art.Therefore, these modifications or improvements all belong to the scope of protection of present invention without departing from theon the basis of the spirit of the present invention.
Claims (10)
1. an open-type gear grease composition is characterized in that, comprises following component and weight percentage:
Viscosifying agent 2-6%,
Mineral oil 20-60%,
Synthetic oil 20-60%,
Oxidation inhibitor 0.3-1%,
Oil soluble extreme pressure additive 1-15%,
Solid additive 3-20%,
Rust-preventive agent 1-3%.
2. open-type gear grease composition according to claim 1 is characterized in that, comprises following component and weight percentage:
Viscosifying agent 2-5%,
Mineral oil 30-50%,
Synthetic oil 30-50%,
Oxidation inhibitor 0.3-0.5%,
Oil soluble extreme pressure additive 5-15%,
Solid additive 8-20%,
Rust-preventive agent 2-3%.
3. open-type gear grease composition according to claim 1 and 2, it is characterized in that described viscosifying agent is one or more mixtures in lithium soap, calcium soap, barium soap, aluminium soap, allophanamide, four ureas, silica gel, compound lithium soap, compound aluminium soap, the composite sulfoacid calcium soap.
4. open-type gear grease composition according to claim 3, it is characterized in that, described lithium soap is the 12-OH lithium stearate, described calcium soap is the 12-OH calcium stearate, described barium soap is the 12-OH barium stearate, described aluminium soap is an aluminum stearate, and described compound aluminium soap is stearic acid and the compound aluminium soap of phenylformic acid.
5. according to any described open-type gear grease composition of claim 1-4, it is characterized in that described mineral oil is paraffinic base, intermediate base, the cycloalkyl neutral oil that 40 ℃ of viscosity are 30-500cSt.
6. according to any described open-type gear grease composition of claim 1-5, it is characterized in that described synthetic oil is that 40 ℃ of viscosity are the synthetic hydrocarbon of 1000-300000cSt, ester class oil.
7. according to the described open-type gear grease composition of claim 6, it is characterized in that described synthetic hydrocarbon is a poly-alpha olefins, polybutene, polyisobutene, the synthetic cylinder stock oil of 65#; Described ester class oil is the multiple ester of big viscosity.
8. according to any described open-type gear grease composition of claim 1-7, it is characterized in that, described oil soluble extreme pressure additive is a sulphur phosphorus type extreme pressure additive, and wherein sulfur-containing additive is the one or more combination thing in sulfurized fatty, olefine sulfide, sulfide isobutene, benzyl polysulfide, phenyl polysulfide, the dialkyl dithiocarbamate; Phosphor-included additive is the one or more combination thing in triphenylphosphate, tritolyl phosphate, acid phosphoric acid ester, dialkyl dithiophosphate, straight chain alkanol phosphoric acid ester, the branched alkanol phosphoric acid ester.
9. according to any described open-type gear grease composition of claim 1-8, it is characterized in that described solid additive is graphite, molybdenumdisulphide, tetrafluoroethylene, tungsten disulfide, trimeric cyanamide, lime carbonate, calcium phosphate, calcium sulfate, barium carbonate, barium sulfate, mica powder.
10. according to any described open-type gear grease composition of claim 1-9, it is characterized in that described rust-preventive agent is Sulfonates, naphthenate or benzotriazole.
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2008
- 2008-01-30 CN CN2008100571996A patent/CN101235338B/en not_active Expired - Fee Related
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