CN102337175B - Hydraulic oil composition with high extreme pressure performance - Google Patents
Hydraulic oil composition with high extreme pressure performance Download PDFInfo
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Abstract
The invention provides a hydraulic oil composition with a high extreme pressure performance. The composition comprises base oil and an extreme pressure anti-wear agent accounting for 0.3-3% of the total weight of the composition, with the base oil composed of API I type oil and API II type oil in a weight ratio of 1:15-1:1.5. The hydraulic oil composition with a high extreme pressure performance in the invention, according to a test by the GB/T 3142 determination method for the load carrying capacity of lubricant (a four-ball method, under a test condition of 1760rpm), has a sintering load greater than or equal to 1236N, a maximum nonseizure load greater than or equal to 785N, and ZMZ greater than or equal to 295N. Compared with present products, the hydraulic oil composition of the invention has a high extreme pressure performance, and is suitable for various low, medium, high and even ultrahigh pressure hydraulic systems in engineering machineries and industrial equipment.
Description
Technical field
The present invention relates to a kind of lubricating oil composition, specifically, relate to a kind of hydraulic fluid compositions with high extreme pressure property, be applicable to the various basic, normal, high even Superhigh Pressure Hydraulic System of engineering machinery, industrial equipments.
Background technology
Hydraulic pressure drive control system is a kind of control mode conventional in mechanical transmission, and it adopts hydro-pump, hydraulicvalve, motor to complete the process of transferring energy, and control mode has very high handiness and convenience.
Along with the development of Hydraulic Elements manufacturing technology, the operating pressure of hydraulic efficiency system improves constantly, therefore, part Hydraulic Elements manufacturers, the hydraulic efficiency oil that its Hydraulic Elements are used, except requiring to guarantee the over-all properties of other hydraulic efficiency oil, extreme pressure anti-wear to hydraulic efficiency oil is had higher requirement, require the sintering load PD value of measuring by GB/T 3142 four-ball tester methods to be not less than 1236N, last non seizure load PB value is not less than 785N, and integrated abrasion value ZMZ is greater than 295N, and the extreme pressure property of current commercially available oil product can not meet its index request.
Summary of the invention
The object of the present invention is to provide a kind of hydraulic fluid compositions with high extreme pressure property, to meet the requirement of hydraulic efficiency oil to extreme pressure property.
In order to realize the object of the invention, the invention provides a kind of hydraulic fluid compositions with high extreme pressure property, it contains base oil and extreme pressure anti-wear additives, and described base oil is made up of APII class oil and APIII class oil, and the weight ratio of the two is 1: 15～1: 1.5; Described extreme pressure anti-wear additives weight percentage is total amount 0.3～3%.
Preferably, described base oil is 1: 10～1: 2 by API I class oil with the weight ratio of API II class oil.
Described extreme pressure anti-wear additives weight percentage is total amount 0.4～2%.
Wherein, described API I class oil (conventional mineral type), its viscosity index 80～120, sulphur content > 0.03%, saturated hydrocarbon content < 90%.
API II class oil (adopting hydrocracking or hydrogenation alienation cracking technique), its viscosity index 80～120, sulphur content≤0.03%, saturated hydrocarbon content > 90%.
Described extreme pressure anti-wear additives is the combination of at least two kinds in zinc dialkyl dithiophosphate, dialkyl dithiophosphate amine salt and dialkyl dithiophosphate, and wherein the alkyl in each compound can be the primary, secondary alkyl substituent that contains 4～16 carbon atoms.
Wherein preferably 0.2～0.9% (weight percent meter) of zinc dialkyl dithiophosphate, dialkyl dithiophosphate amine salt is 0～0.5% (weight percent meter) preferably, and dialkyl dithiophosphate is 0.05～0.6% (weight percent meter) preferably.
Bear in metallic surface under the condition of load; the metallic surface sags and crests of two contacts intermeshes, and produces partial high pressure, high temperature, and extreme pressure anti-wear additives will react with metallic surface; generate surface protection film, thereby play anti-skidding surface wearing and tearing, abrade the even effect of sintering.Extreme pressure anti-wear additives of the present invention can increase substantially the extreme pressure anti-wear of lubricating oil.
Hydraulic fluid compositions of the present invention also can select other functional additive to strengthen the specific performance of lubricating oil itself, as rust-preventing characteristic, anti-spumescence, resistance to emulsion, low-temperature performance etc., can comprise following one or more functional additive compositions: antioxidant, rust-preventive agent, metal corrosion inhibitor, viscosity index improver, pour point depressant, non-emulsifying agent, kilfoam.
Above-mentioned functions additive all can adopt the open additive using in this area, and wherein antioxidant comprises various shielding phenol, arylamine and amido phenol etc., and such as liquid shielding phenol and pentanoic, the add-on of antioxidant is 0.05%～0.5%; Rust-preventive agent comprises alkylsulfonate, carboxylate salt, and such as dinonylnaphthalene sulfonic acid calcium, add-on is 0.01%～0.5%; Metal corrosion inhibitor comprises 124 Triazole and derivative thereof, thiadiazoles derivative, such as N, and N '-dialkyl group methylene-benzene triazole, add-on is 0.01%～0.1%; The viscosity index improver using in lubricating oil comprises polyisobutene, polymethacrylate, ethylene-propylene copolymer, olefin copolymer etc., and add-on can be 0.5%～10%; Pour point depressant mainly comprises alkylnaphthalene, polyester, polyolefins compound, and such as polymethacrylate (carbonatoms is 12～18), add-on can be 0.01%～1%; Kilfoam is mainly divided into silicon type by component type or/and non-silicon type antifoamer, and add-on is 10～200ppm.
Base oil, various additive in the high extreme pressure and antiwear behavior hydraulic fluid compositions of the present invention can be selected from following product.
Table 1 American Petroleum Institute (API) (API) base oil classification
Table 2 employing additive of the present invention trade name and manufacturer
The hydraulic fluid compositions with high extreme pressure property of the present invention can adopt conventional lubricating oil product accord method preparation, specifically, each composition is added in blending container by proportioning, within 1～5 hour, forms 40～80 ℃ of stirrings.
The present invention has the hydraulic fluid compositions employing of high extreme pressure property the consumption of base oil API I class oil, API II class oil and extreme pressure anti-wear additives is screened, further the compound of different extreme pressure anti-wear additives is optimized, increased substantially the extreme pressure anti-wear of lubricating oil simultaneously; Its extreme pressure property of measuring according to GB/T 3142 load carrying capacity of lubricant assay methods (four ball methods, test conditions 1760rpm) has following characteristic:
Sintering load >=1236N;
Last non seizure load >=785N;
Resultant wear index >=295N.
Hydraulic fluid compositions of the present invention, compared with currently available products, has high extreme pressure and antiwear behavior, is applicable to the various basic, normal, high even Superhigh Pressure Hydraulic System of engineering machinery, industrial equipments.
Embodiment
Following examples are used for illustrating the present invention, but are not used for limiting the scope of the invention.
Embodiment 1
Get zinc dialkyl dithiophosphate (T203, alkyl is C4～C8) 0.3kg, dialkyl dithiophosphate amine salt (Irgalube 349, alkyl is C10～C14) 0.05kg, dialkyl dithiophosphate (Irgalube 353, alkyl is C4) 0.05kg, 4-octyl group-4 '-butyl pentanoic (T557) 0.1kg, dinonylnaphthalene sulfonic acid calcium (NA-Sul 729) 0.06kg, then join successively API I class base oil (viscosity index 82, sulphur content 0.07%, stable hydrocarbon 85%) 9.44kg and API II class base oil (viscosity index 106, sulphur content 0.01%, stable hydrocarbon 99%) in 90kg, mixed stirring 3 hours at 50 ℃, make hydraulic fluid compositions.
Embodiment 2
Get zinc dialkyl dithiophosphate (T204, alkyl is C4～C8) 0.2kg, dialkyl dithiophosphate (Irgalube 353, alkyl is C4) 0.6kg, 2, 6-ditertbutylparacresol (Hitec 4701) 0.1kg, polymethacrylate (carbonatoms is 16) 0.1kg, then join successively API I class base oil (viscosity index 85, sulphur content 0.08%, stable hydrocarbon 87%) 23.5kg and API II class base oil (viscosity index 105, sulphur content is 0, stable hydrocarbon 95%) in 75kg, mixed stirring 5 hours at 40 ℃, make hydraulic fluid compositions.
Embodiment 3
Get zinc dialkyl dithiophosphate (T203, alkyl is C4～C8) 0.4kg, dialkyl dithiophosphate amine salt (Irgalube 349, alkyl is C10～C14) 0.2kg, dialkyl dithiophosphate (Irgalube 353, alkyl is C4) 0.05kg, 4-octyl group-4 '-butyl pentanoic (T557) 0.2kg, polymethacrylate (carbonatoms is 12) 0.3kg, dinonylnaphthalene sulfonic acid calcium (NA-Sul 729) 0.1kg, composite anti-foam agent (T921) 0.1kg, then join successively API I class base oil (viscosity index 82, sulphur content 0.07%, stable hydrocarbon 85%) 35kg and API II class base oil (viscosity index 106, sulphur content 0.01%, stable hydrocarbon 99%) in 63.74kg, mixed stirring 2 hours at 70 ℃, make hydraulic fluid compositions.
Embodiment 4
Get zinc dialkyl dithiophosphate (T204, alkyl is C4～C8) 0.9kg, dialkyl dithiophosphate amine salt (Irgalube 349, alkyl is C10～C14) 0.5kg, dialkyl dithiophosphate (Irgalube 353, alkyl is C4) 0.6kg, 2, 6-ditertbutylparacresol 0.15kg, 4-octyl group-4 '-butyl pentanoic 0.15kg, polymethacrylate (carbonatoms is 18) 0.08kg, then join successively API I class base oil (viscosity index 82, sulphur content 0.07%, stable hydrocarbon 85%) 32.32kg and API II class base oil (viscosity index 106, sulphur content 0.01%, stable hydrocarbon 99%) in 65.4kg, mixed stirring 1 hour at 80 ℃, make hydraulic fluid compositions.
Embodiment 5
Get zinc dialkyl dithiophosphate (LZ1375, alkyl is C4～C8) 0.8kg, dialkyl dithiophosphate amine salt (Irgalube 349, alkyl is C10～C14) 0.3kg, dialkyl dithiophosphate 0.4kg, 4-octyl group-4 '-butyl pentanoic (T557) 0.3kg, polymethacrylate (carbonatoms is 14) 0.1kg, N, N '-dialkyl group methylene-benzene triazole (T551) 0.05kg, then join successively API I class base oil (viscosity index 85, sulphur content 0.1%, stable hydrocarbon 85%) 15kg and API II class base oil (viscosity index 110, sulphur content 0, stable hydrocarbon 98%) in 83.05kg, mixed stirring 4 hours at 60 ℃, make hydraulic fluid compositions.
Embodiment 6 (comparative example)
Get zinc dialkyl dithiophosphate (LZ1395, alkyl is C4～C8) 0.2kg, dialkyl dithiophosphate amine salt (Irgalube 349, alkyl is C10～C14) 0.5kg, 2, 6-ditertbutylparacresol (Hitec 4701) 0.1kg, polymethacrylate (viscosity index improver--Viscoplex8-200) 0.5kg, N, N '-dialkyl group methylene-benzene triazole (T551) 0.1kg, then join successively API I class base oil (viscosity index 85, sulphur content 0.1%, stable hydrocarbon 85%) 23.6kg and API II class base oil (viscosity index 110, sulphur content 0, stable hydrocarbon 98%) in 75kg, mixed stirring 3 hours at 50 ℃, make hydraulic fluid compositions.
Test example 1
Embodiment 1-6 respectively, and commercial like product carries out extreme pressure property detection, measure according to GB/T3142 load carrying capacity of lubricant assay method (four ball methods, test conditions 1760rpm), embodiment 6,7 is comparative example, and wherein embodiment 7 oil products are outer commercial like product of adopting.
Table 3 embodiment 1-5 and comparative example
Test-results shows, in embodiment 6, does not add dialkyl dithiophosphate, and its test-results is obviously worse than other embodiment, and commercial like product also will be worse than the hydraulic fluid compositions the present invention relates to aspect extreme pressure property.As can be seen here, the hydraulic fluid compositions the present invention relates to has excellent extreme pressure property compared with currently available products.
Although 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 without departing from theon the basis of the spirit of the present invention, all belong to the scope of protection of present invention.
Claims (3)
1. one kind has the hydraulic fluid compositions of high extreme pressure property, it is characterized in that, adopt with the following method and make: get zinc dialkyl dithiophosphate T2030.3kg, dialkyl dithiophosphate amine salt Irgalube3490.05kg, dialkyl dithiophosphate Irgalube3530.05kg, 4-octyl group-4'-butyl pentanoic T5570.1kg, dinonylnaphthalene sulfonic acid calcium NA-Sul7290.06kg, then join successively in API I class base oil 9.44kg and API II class base oil 90kg mixed stirring 3 hours at 50 ℃; The alkyl of described zinc dialkyl dithiophosphate T203 is C4～C8; The alkyl of described dialkyl dithiophosphate amine salt Irgalube349 is C10～C14; The alkyl of described dialkyl dithiophosphate Irgalube353 is C4; The viscosity index of described API I class base oil is 82, and sulphur content is 0.07%, and stable hydrocarbon is 85%; The viscosity index of described API II class base oil is 106, and sulphur content is 0.01%, and stable hydrocarbon is 99%.
2. one kind has the hydraulic fluid compositions of high extreme pressure property, it is characterized in that, adopt with the following method and make: get zinc dialkyl dithiophosphate T2030.4kg, dialkyl dithiophosphate amine salt Irgalube3490.2kg, dialkyl dithiophosphate Irgalube3530.05kg, 4-octyl group-4 '-butyl pentanoic T5570.2kg, carbonatoms is 12 polymethacrylate 0.3kg, dinonylnaphthalene sulfonic acid calcium NA-Sul7290.1kg, composite anti-foam agent T9210.1kg, then join successively in API I class base oil 35kg and API II class base oil 63.74kg, mixed stirring 2 hours at 70 ℃, the alkyl of described zinc dialkyl dithiophosphate T203 is C4～C8, the alkyl of described dialkyl dithiophosphate amine salt Irgalube349 is C10～C14, the alkyl of described dialkyl dithiophosphate Irgalube353 is C4, the viscosity index of described API I class base oil is 82, and sulphur content is 0.07%, and stable hydrocarbon is 85%, the viscosity index of described API II class base oil is 106, and sulphur content is 0.01%, and stable hydrocarbon is 99%.
3. one kind has the hydraulic fluid compositions of high extreme pressure property, it is characterized in that, adopt with the following method and make: get zinc dialkyl dithiophosphate T2040.9kg, dialkyl dithiophosphate amine salt Irgalube3490.5kg, dialkyl dithiophosphate Irgalube3530.6kg, 2,6-ditertbutylparacresol 0.15kg, 4-octyl group-4 '-butyl pentanoic 0.15kg, carbonatoms is 18 polymethacrylate 0.08kg, then join successively in API I class base oil 32.32kg and API II class base oil 65.4kg mixed stirring 1 hour at 80 ℃; The alkyl of described zinc dialkyl dithiophosphate T204 is C4～C8; The alkyl of described dialkyl dithiophosphate amine salt Irgalube349 is C10～C14; The alkyl of described dialkyl dithiophosphate Irgalube353 is C4; The viscosity index of described API I class base oil is 82, and sulphur content is 0.07%, and stable hydrocarbon is 85%; The viscosity index of described API II class base oil is 106, and sulphur content is 0.01%, and stable hydrocarbon is 99%.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105368538A (en) * | 2014-08-21 | 2016-03-02 | 中国石油化工股份有限公司 | Lubricating oil composition used for jacks, and preparation method thereof |
| CN106701269A (en) * | 2016-11-15 | 2017-05-24 | 广西北海玉柴马石油高级润滑油有限公司 | Wear-resisting hydraulic oil |
| CN108795543A (en) * | 2017-05-03 | 2018-11-13 | 中国石油天然气股份有限公司 | Hydraulic oil composition special for engineering machinery |
| CN107057816A (en) * | 2017-05-12 | 2017-08-18 | 邢台禾大科技开发有限公司 | Synthetic hydraulic fluid |
| CN108300554B (en) * | 2018-03-26 | 2021-02-09 | 烟台恒邦化工有限公司 | Synthetic non-stain hydraulic oil and preparation method thereof |
| CN108441295A (en) * | 2018-04-09 | 2018-08-24 | 烟台广和润滑油有限公司 | A kind of low solidifying, antistatic antiwear hydraulic oil |
| CN111718782A (en) * | 2020-04-24 | 2020-09-29 | 司能石油化工有限公司 | Clean long-life hydraulic oil |
| CN114075473B (en) * | 2020-08-18 | 2022-12-13 | 中国石油化工股份有限公司 | Emulsified hydraulic oil composition |
| CN114106917A (en) * | 2021-11-29 | 2022-03-01 | 安美科技股份有限公司 | Gas spring antifriction hydraulic oil composition |
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| CN101724490A (en) * | 2008-10-17 | 2010-06-09 | 雅富顿公司 | Lubricating composition with good oxidative stability and reduced deposit formation |
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| CN101724490A (en) * | 2008-10-17 | 2010-06-09 | 雅富顿公司 | Lubricating composition with good oxidative stability and reduced deposit formation |
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