CN106479648A - A kind of high viscosity synthetic hydraulic fluid compositionss and its application - Google Patents

A kind of high viscosity synthetic hydraulic fluid compositionss and its application Download PDF

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Publication number
CN106479648A
CN106479648A CN201610903633.2A CN201610903633A CN106479648A CN 106479648 A CN106479648 A CN 106479648A CN 201610903633 A CN201610903633 A CN 201610903633A CN 106479648 A CN106479648 A CN 106479648A
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hydraulic fluid
foaming agent
corrosion inhibitor
oil
antioxidant
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李健
魏文红
金承华
赵玉贞
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China Petroleum and Chemical Corp
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China Petroleum and Chemical Corp
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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
    • C10M169/04—Mixtures of base-materials and additives
    • C10M169/044—Mixtures of base-materials and additives the additives being a mixture of non-macromolecular and macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
    • C10M169/04—Mixtures of base-materials and additives
    • C10M169/045—Mixtures of base-materials and additives the additives being a mixture of compounds of unknown or incompletely defined constitution and non-macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/1033—Polyethers, i.e. containing di- or higher polyoxyalkylene groups used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
    • C10M2215/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to carbon atoms of six-membered aromatic rings
    • C10M2215/064—Di- and triaryl amines
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/22—Heterocyclic nitrogen compounds
    • C10M2215/223—Five-membered rings containing nitrogen and carbon only
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
    • C10M2219/046—Overbasedsulfonic acid salts
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/04—Phosphate esters
    • C10M2223/041—Triaryl phosphates
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/04—Phosphate esters
    • C10M2223/045—Metal containing thio derivatives
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/04—Phosphate esters
    • C10M2223/047—Thioderivatives not containing metallic elements
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
    • C10M2229/04—Siloxanes with specific structure
    • C10M2229/041—Siloxanes with specific structure containing aliphatic substituents
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/02—Pour-point; Viscosity index
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/08—Resistance to extreme temperature
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/10—Inhibition of oxidation, e.g. anti-oxidants
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/08—Hydraulic fluids, e.g. brake-fluids

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Lubricants (AREA)

Abstract

The invention provides a kind of high viscosity synthetic hydraulic fluid compositionss, including：PAG base oil, antioxidant, extreme pressure anti-wear additives, corrosion inhibitor, matal deactivator and anti-foaming agent；Described PAG base oil, antioxidant, extreme pressure anti-wear additives, corrosion inhibitor, the mass ratio of matal deactivator and anti-foaming agent is 100：(1～3)：(1～4)：(0.05～0.1)：(0.1～0.5)：(0.1～0.5).By the present invention in that using PAG base oil, add specific additive combination, the hydraulic oil of preparation has higher viscosity, and disclosure satisfy that the change of down-hole pressure and temperature is arrived on ground, and its maximum operation (service) temperature is up to 180 DEG C.

Description

A kind of high viscosity synthetic hydraulic fluid compositionss and its application
Technical field
The present invention relates to technical field of lubricating oil, more particularly, to a kind of high viscosity synthetic hydraulic fluid compositionss and its application.
Background technology
Hydraulic oil is one kind of industrial lubricant, is a kind of working media for Hydraulic Power Transmission System.It is widely used in machine The aspect such as bed, mine engineering machinery, agricultural machinery, casting forging machine tool, transportation machinery Aeronautics and Astronautics.At present, hydraulic drive skill Art has become as a part for our daily life, is difficult to find the machine being operated without hydraulic system and aircraft.
The viscosity trade mark of hydraulic oil is specified by GB 3141, the viscosity classification method of adopting by equivalent ISO, is moved with 40 DEG C The central value of viscosity is dividing the trade mark.It is divided into 10,15,22,32,46,68,100,150 8 viscosity grades, wherein, 10,15 For military aircraft oil, 32 is northern Domestic oil, and 46 is southern Domestic oil.
But in some special dimensions, such as oil drilling, for hydraulic pressure oil viscosity, using temperature, there are higher need Ask, above-mentioned hydraulic oil is all difficult to meet require.
Content of the invention
In view of this, the technical problem to be solved in the present invention be to provide a kind of high viscosity synthetic hydraulic fluid compositionss and its Application, the hydraulic oil of preparation has higher viscosity and uses temperature.
The invention provides a kind of high viscosity synthetic hydraulic fluid compositionss, including：
PAG base oil, antioxidant, extreme pressure anti-wear additives, corrosion inhibitor, matal deactivator and anti-foaming agent；
Described PAG base oil, antioxidant, extreme pressure anti-wear additives, corrosion inhibitor, the mass ratio of matal deactivator and anti-foaming agent For 100：(1～3)：(1～4)：(0.05～0.1)：(0.1～0.5)：(0.1～0.5).
Preferably, described PAG base oil, antioxidant, extreme pressure anti-wear additives, corrosion inhibitor, matal deactivator and anti-foaming agent Mass ratio be 100：3：4：0.1：0.1：0.3, or 100：1：2.5：0.05：0.05：0.5, or 100：2：1：0.07：0.07： 0.1.
Preferably, the kinematic viscosity of 40 DEG C of described PAG base oil is 198～242mm2/s.
Preferably, described antioxidant is one or more of amine type compounds antioxidant.
Preferably, described extreme pressure anti-wear additives are one or more of phosphate type compounds extreme pressure anti-wear additives.
Preferably, described corrosion inhibitor is in sulfonate, fatty acid and its derivative compounds species corrosion inhibitor Plant or several.
Preferably, described matal deactivator is one or more of benzotriazole derivatives class matal deactivator.
Preferably, described anti-foaming agent is one or more of organosilicon or polyether modified silicon oil type anti-foaming agent.
Preferably, described PAG base oil is the mixed base oil of JM-105A and JM-105B, or N-220-3 or GE- 220A；Described antioxidant is di-iso-octyldiphenylamine, benzotriazole lauryl amine or L06 amine antioxidants；Described extreme pressure anti-wear additives are Tricresyl alkaliine, zinc dialkyl dithiophosphate or ashless butyl triphenyl thiophosphate；Described corrosion inhibitor is alkali Property dinonyl naphthalene sulfonate barium；Described matal deactivator is benzotriazole (T706), and methyl benzotriazole or L39 benzotriazole class are corroded Inhibitor；Described anti-foaming agent is 1000# methyl-silicone oil anti-foaming agent, and MS-575 modified silicon oil anti-foaming agent or RN247 modified silicon oil resist Infusion.
Present invention also offers Hydraulic Power Transmission System in formation tester for the above-mentioned high viscosity synthetic hydraulic fluid compositionss In application.
Compared with prior art, the invention provides a kind of high viscosity synthetic hydraulic fluid compositionss, including：PAG base oil, Antioxidant, extreme pressure anti-wear additives, corrosion inhibitor, matal deactivator and anti-foaming agent；Described PAG base oil, antioxidant, extreme-pressure anti-wear The mass ratio of agent, corrosion inhibitor, matal deactivator and anti-foaming agent is 100：(1～3)：(1～4)：(0.05～0.1)：(0.1 ～0.5)：(0.1～0.5).By the present invention in that using PAG base oil, add specific additive combination, the hydraulic oil tool of preparation There is higher viscosity, and disclosure satisfy that the change of down-hole pressure and temperature is arrived on ground, its maximum operation (service) temperature is up to 180 DEG C.
Specific embodiment
The invention provides a kind of high viscosity synthetic hydraulic fluid compositionss, including：
PAG base oil, antioxidant, extreme pressure anti-wear additives, corrosion inhibitor, matal deactivator and anti-foaming agent；
Described PAG base oil, antioxidant, extreme pressure anti-wear additives, corrosion inhibitor, the mass ratio of matal deactivator and anti-foaming agent For 100：(1～3)：(1～4)：(0.05～0.1)：(0.1～0.5)：(0.1～0.5).
By the present invention in that using PAG base oil, add specific additive combination, the hydraulic oil of preparation has higher sticking Degree index, flash-point and good thermal oxidation stability, disclosure satisfy that formation tester from ground until down-hole uses temperature and pressure The hydraulic drive of power significant change needs, and disclosure satisfy that underground maximum operation (service) temperature reaches 180 DEG C of use requirement simultaneously.
The high viscosity synthetic hydraulic fluid compositionss that the present invention provides, including：
PAG base oil, described PAG refers to poly- alkylene ethylene glycol, and its 40 DEG C kinematic viscosity is preferably 198～242mm2/s. Currently preferred, described PAG base oil is the mixed base oil of JM-105A and JM-105B, or N-220-3 or GE-220A.
Antioxidant, described antioxidant is preferably one or more of amine type compounds antioxidant, the present invention certain In a little specific embodiments, described antioxidant is di-iso-octyldiphenylamine, benzotriazole lauryl amine or L06 amine antioxidants.
Extreme pressure anti-wear additives, described extreme pressure anti-wear additives are preferably one of phosphate type compounds extreme pressure anti-wear additives or several Kind, in some embodiments of the invention, described extreme pressure anti-wear additives are tricresyl alkaliine (TCP), dialkyl dithio Zinc phosphate or ashless butyl triphenyl thiophosphate (IRGALUBE232).
Corrosion inhibitor, it is corrosion inhibition that described corrosion inhibitor is preferably sulfonate, fatty acid and its derivative compounds species One or more of agent, in some embodiments of the invention, described corrosion inhibitor is alkaline dinonylnaphthalene sulfonic acid Barium (T705).
Matal deactivator, described matal deactivator is preferably one of benzotriazole derivatives class matal deactivator or several Kind, in some embodiments of the invention, described matal deactivator be benzotriazole (T706), methyl benzotriazole or L39 benzotriazole class corrosion inhibitor.
Anti-foaming agent, described anti-foaming agent is preferably one or more of organosilicon or polyether modified silicon oil type anti-foaming agent, In some embodiments of the invention, described anti-foaming agent is 100# methyl-silicone oil anti-foaming agent, MS-575 modified silicon oil anti-foaming agent Or RN247 modified silicon oil anti-foaming agent.
Above-mentioned PAG base oil, antioxidant, extreme pressure anti-wear additives, corrosion inhibitor, matal deactivator and anti-foaming agent in the present invention Mass ratio be preferably 100：(1～3)：(1～4)：(0.05～0.1)：(0.1～0.5)：(0.1～0.5), the present invention's In some specific embodiments, described mass ratio is 100：3：4：0.1：0.1：0.3, or 100：1：2.5：0.05：0.05：0.5, or 100：2：1：0.07：0.07：0.1.
The present invention adopts above-mentioned specifically each component and its content, the high viscosity synthetic hydraulic fluid compositionss of preparation, has Viscosity Index is high, and viscosity temperature characteristic is good, high-flash, and thermal oxidation stability is good, and lubricity is good, the good performance characteristics of shear stability, Have broad application prospects and preferable economic benefit.
The present invention to the preparation method of described high viscosity synthetic hydraulic fluid compositionss and is not particularly limited, and can be this area The preparation method of the hydraulic oil known to technical staff, currently preferred, base oil is warming up to 70～80 DEG C, is subsequently adding anti- Oxygen agent, extreme pressure anti-wear additives, corrosion inhibitor, matal deactivator and anti-foaming agent, are warmed up to 110～130 DEG C of dehydration 1～2h, add Filter aid obtains limpid transparent hydraulic oil.Described filter aid can be filter aid well known to those skilled in the art, such as Hargil filter aid or super-cell, the present invention to this and is not particularly limited.The present invention, before adding filter aid, first adopts The oil product of a small amount of non-filtration treatment, with filter aid mix and blend, circulating filtration, makes filter aid form filter cake in filter, then Filtration is circulated to whole oil products.
The present invention to the consumption of described filter aid and is not particularly limited, and those skilled in the art can rule of thumb voluntarily add Plus.Currently preferred, the consumption of described filter aid is the 0.02wt%～0.04wt% of oil product.
Present invention also offers Hydraulic Power Transmission System in formation tester for the above-mentioned high viscosity synthetic hydraulic fluid compositionss In application.
Described formation tester has significantly greater change using temperature and pressure from ground to down-hole, and underground highest It is up to 180 DEG C using temperature, therefore for hydraulic oil, there is harsher requirement.And the hydraulic oil that the present invention provides can be very Good is applied to above-mentioned use environment.
Described Hydraulic Power Transmission System can be the positions such as multi-current tester, bumper jar, external diameter security seal and bore hole bypass.
In order to further illustrate the present invention, combine with reference to the high viscosity synthetic hydraulic fluid that embodiment provides to the present invention Thing and its application are described in detail.
Embodiment 1
Step a)：JM-105A the and 50%JM-105B gear that percentage by weight is 50% is pumped in compounding kettle, Evacuate, stir, heat, be warming up to 80 DEG C；
Step b)：Counted for 100% with the base oil total amount that step a) obtains, add 3.0% in the base oil of step a) Di-iso-octyldiphenylamine, 0.1%T706 benzotriazole (T706), 4.0% tricresyl alkaliine (TCP), 0.1% alkalescence two Nonyl naphthalene barium sulfonate (T705), 0.3% 1000# methyl-silicone oil anti-foaming agent, are warmed up to 120 DEG C of dehydration 1～2h；
Step c)：The oil product that step b) is obtained takes out the hargil drainage adding the 0.03% of all oil product weight on a small quantity Agent is stirred, and is circulated filtration, after making filter aid form filter cake in filter, then oil product remaining in kettle was circulated Filter, until oil product is limpid transparent, mechanical impurity, obtain hydraulic oil.
Embodiment 2：
Step a)：The N-220-3 gear that percentage by weight is 100% is pumped in compounding kettle, evacuates, stirs, adds Heat, is warming up to 80 DEG C；
Step b)：Add in the base oil of step a) 1.0% benzotriazole lauryl amine, 0.05% methyl benzotriazole, 2.5% Zinc dialkyl dithiophosphate, 0.05% alkaline dinonyl naphthalene sulfonate barium (T705), the 0.5% anti-bubble of MS-575 modified silicon oil Agent, is warmed up to 120 DEG C of dehydration 1～2h；
Step c)：The oil product that step b) is obtained takes out and adds the 0.03% of all oil product weight kieselguhr to help on a small quantity Filtering agent stirs, and is circulated filtration, after making filter aid form filter cake in filter, then oil product remaining in kettle was circulated Filter, until oil product is limpid transparent, mechanical impurity, obtain hydraulic oil.
Embodiment 3：
Step a)：The GE-220A gear that percentage by weight is 100% is pumped in compounding kettle, evacuates, stirs, adds Heat, is warming up to 80 DEG C；
Step b)：2.00% L06 amine antioxidants, the benzene three of 0.07% L39 is added in the base oil of step a) Azole corrosion inhibitor, 1.0% ashless butyl triphenyl thiophosphate (IRGALUBE 232), 0.07% alkalescence two nonyl Base naphthalene sulfonate barium (T705), 0.1% RN247 modified silicon oil anti-foaming agent, are warmed up to 120 DEG C of dehydration 1～2h；
Step c)：The oil product that step b) is obtained takes out the hargil drainage adding the 0.03% of all oil product weight on a small quantity Agent is stirred, and is circulated filtration, after making filter aid form filter cake in filter, then oil product remaining in kettle was circulated Filter, until oil product is limpid transparent, mechanical impurity, obtain hydraulic oil.
Comparative example 1
Step a)：The III class hydrogenated base oil gear that percentage by weight is 100% is pumped in compounding kettle, adds 0.3% polymethyl methacrylate, stirs to being completely dissolved, and obtains the first mixture；
Step b)：The first mixture that step a) is obtained adds 1% complexing agent H521,1.5% diisooctyl hexichol Amine antioxidant, 0.5%T561, dissolving, carry out circulating filtration after 30min, until oil product is limpid transparent, mechanical impurity, obtain Hydraulic oil.
Comparative example 2
Step a)：The PAO gear that percentage by weight is 100% is pumped in compounding kettle, adds the poly- methyl-prop of 0.3kg E pioic acid methyl ester, stirs to being completely dissolved, and obtains the first mixture；
Step b)：Add 1% complexing agent H521,0.2%T561, dissolving in the base oil of step a), carry out after 30min Circulating filtration, until oil product is limpid transparent, mechanical impurity, obtain hydraulic oil；
Respectively performance test is carried out to the hydraulic oil of above-described embodiment and comparative example preparation, method of testing is this area skill Well known to art personnel, experimental result is shown in Table 1, and table 1 is the hydraulic oil performance detection data of the embodiment of the present application and comparative example：
Table 1 hydraulic oil performance detection data
The high viscosity synthetic hydraulic fluid compositionss being provided from table 1 properties as listed data, the present invention, from the poly- alkane of PAG Support glycol base oil is equipped with special additive combination, has higher Viscosity Index, high-flash and good thermal oxide and stabilizes Property, lubricity and shear stability.Disclosure satisfy that formation tester from ground until down-hole use temperature and pressure significant change Hydraulic drive need, disclosure satisfy that underground maximum operation (service) temperature reaches 180 DEG C of use requirement.
The explanation of above example is only intended to help and understands the method for the present invention and its core concept.It should be pointed out that it is right For those skilled in the art, under the premise without departing from the principles of the invention, the present invention can also be carried out Some improvement and modification, these improve and modify and also fall in the protection domain of the claims in the present invention.

Claims (10)

1. a kind of high viscosity synthetic hydraulic fluid compositionss are it is characterised in that include：
PAG base oil, antioxidant, extreme pressure anti-wear additives, corrosion inhibitor, matal deactivator and anti-foaming agent；
Described PAG base oil, antioxidant, extreme pressure anti-wear additives, corrosion inhibitor, the mass ratio of matal deactivator and anti-foaming agent is 100：(1～3)：(1～4)：(0.05～0.1)：(0.1～0.5)：(0.1～0.5).
2. synthetic hydraulic fluid compositionss according to claim 1 are it is characterised in that described PAG base oil, antioxidant, pole Pressure antiwear additive, corrosion inhibitor, the mass ratio of matal deactivator and anti-foaming agent is 100：3：4：0.1：0.1：0.3, or 100：1： 2.5：0.05：0.05：0.5, or 100：2：1：0.07：0.07：0.1.
3. synthetic hydraulic fluid compositionss according to claim 1 are it is characterised in that the motion of 40 DEG C of described PAG base oil Viscosity is 198～242mm2/s.
4. synthetic hydraulic fluid compositionss according to claim 1 are it is characterised in that described antioxidant is amine type compounds One or more of antioxidant.
5. synthetic hydraulic fluid compositionss according to claim 1 are it is characterised in that described extreme pressure anti-wear additives are phosphate type One or more of compounds extreme pressure anti-wear additives.
6. synthetic hydraulic fluid compositionss according to claim 1 it is characterised in that described corrosion inhibitor be sulfonate, One or more of fatty acid and its derivative compounds species corrosion inhibitor.
7. synthetic hydraulic fluid compositionss according to claim 1 are it is characterised in that described matal deactivator spreads out for benzotriazole One or more of biological species matal deactivator.
8. synthetic hydraulic fluid compositionss according to claim 1 are it is characterised in that described anti-foaming agent is organosilicon or polyethers One or more of modified silicon oil type anti-foaming agent.
9. synthetic hydraulic fluid compositionss according to claim 1 it is characterised in that described PAG base oil be JM-105A and The mixed base oil of JM-105B, or N-220-3 or GE-220A；Described antioxidant is di-iso-octyldiphenylamine, benzotriazole 12 Amine or L06 amine antioxidants；Described extreme pressure anti-wear additives are tricresyl alkaliine, zinc dialkyl dithiophosphate or ashless butyl three Phenyl phosphorothioate；Described corrosion inhibitor is alkaline dinonyl naphthalene sulfonate barium；Described matal deactivator is benzotriazole (T706), methyl benzotriazole or L39 benzotriazole class corrosion inhibitor；Described anti-foaming agent is 1000# methyl-silicone oil anti-foaming agent, MS- 575 modified silicon oil anti-foaming agents or RN247 modified silicon oil anti-foaming agent.
10. hydraulic drive in formation tester for the high viscosity synthetic hydraulic fluid compositionss described in any one of claim 1～9 Application in system.
CN201610903633.2A 2016-10-17 2016-10-17 A kind of high viscosity synthetic hydraulic fluid compositionss and its application Pending CN106479648A (en)

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