CN107541319A - A kind of ashless hydraulic fluid of high viscosity index (HVI) low pour point and preparation method thereof - Google Patents
A kind of ashless hydraulic fluid of high viscosity index (HVI) low pour point and preparation method thereof Download PDFInfo
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Abstract
The present invention relates to hydraulic oil field, a kind of ashless hydraulic fluid of high viscosity index (HVI) low pour point and preparation method thereof is disclosed, the ashless hydraulic fluid, include the component of following mass percent：Pour-point depressant：0.2%‑4%；Polymethacrylate viscosity index improver：3%‑20%；Ashless anti-wear hydraulic oil complexing agent：0.2%‑2%；Defoamer：0.005%‑0.5%；Demulsifier：0.001‑0.05%；Base oil：Surplus.The present invention is used cooperatively the effect with good increase viscosity index (VI) in 57 ten thousand polymethacrylates from molecular weight with pour-point depressant of the present invention, it may have good depression effeCt, reduces the usage amount of pour-point depressant.The present invention, with the polyalphaolefin type or ester type pour-point depressant preferably to act synergistically, while viscosity index (VI) is improved, can preferably reduce pour point, improve hydraulic oil low temperature flow from polymethacrylates.
Description
Technical field
The present invention relates to hydraulic oil field, more particularly to a kind of ashless hydraulic fluid of high viscosity index (HVI) low pour point and its preparation
Method.
Background technology
Because of the update of hydraulic test, hydraulic oil also experienced grey antiwear hydraulic oil, low zinc antiwear hydraulic oil, ashless
The development of antiwear hydraulic oil.Ashless anti-wear hydraulic oil is most popular hydraulic oil in current hydraulic test, is had anti-oxidant
Property is good, is not likely to produce the features such as greasy filth.But hydraulic test develops to high output pressure, and the viscosity index (VI) of hydraulic oil is proposed more
High requirement, while because seasonal variations, equipment have higher requirement to the low-temperature startup of winter hydraulic oil.
The output pressure of present hydraulic test can reach 34Mpa sometimes, and because output pressure is high, oil temperature change is fast, and oil product exists
Viscosity diminishes during high temperature, if the viscosity index (VI) of oil product is not high, oil product high temperature viscosity is too low to cause output pressure unstable, influences liquid
Press the operation of equipment.High viscosity index (VI) can guarantee that oil product has higher viscosity in high temperature, more can guarantee that the operation of equipment.
When winter, temperature was relatively low, if the low temperature flow of oil product is bad, the temperature pumping of hydraulic test is influenced whether
Property, not only cause output pressure inadequate, and will also result in the abrasion of hydraulic test.Pour point is lower, the low temperature flow of oil product
Better, the low temperature flow of hydraulic test is better, is more beneficial for protecting hydraulic test.
The A of patent CN 102925263《A kind of high viscosity index (HVI) antiwear hydraulic oil and preparation method thereof》Middle use：It is hydrogenated with different
Structure base oil 37.7%-89.8%, di esters class base oil 5%-30%, viscosity index improver 5%-30% are ashless wear-resistant
Hydraulic oil complexing agent 0.2%-2%, extreme pressure additive 0.02%-0.2%, metal deactivator 0.01%-0.1% (above percentage
Than for mass ratio, similarly hereinafter).The invention has up to 250 viscosity index (VI), when the good protection equipment high output pressure of energy is higher
Normal operation.But oil emulsion, Er Qieyin are easily caused in actual use without addition defoamer and demulsifier in the invention
Pressure quickly changes, and product easily produces foam, and foam can cause cavitation corrosion to equipment, shorten the life-span of equipment.
The B of patent CN 102757841《Ashless low temperature hydraulic oil》It is middle using reconcile base oil and reconcile complexing agent allotment and
Into pour point most low energy reaches -54 DEG C, oil product is had good mobility at low temperature, can open protection equipment low temperature cold well
Dynamic normal operation.But viscosity index (VI) is low, and defoamer and demulsifier are not added, easily cause oil product breast in actual use
Change, and because pressure quickly changes, product easily produces foam, and foam can cause cavitation corrosion to equipment, shorten the longevity of equipment
Life.
To sum up, the existing hydraulic oil with superhigh viscosity index hydraulic oil or with ultralow pour point is all because of properties of product list
One, can not have the viscosity index (VI) of superelevation and ultralow pour point simultaneously, therefore cannot meet in different temperature, different output pressures
Hydraulic test.
The content of the invention
In order to solve the above-mentioned technical problem, the invention provides a kind of ashless hydraulic fluid of high viscosity index (HVI) low pour point and its
Preparation method.The present invention coordinates pour-point depressant to cause hydraulic oil while has superhigh viscosity index and surpass using polymethacrylates
Low pour point.
The present invention concrete technical scheme be：A kind of ashless hydraulic fluid of high viscosity index (HVI) low pour point, including following quality
The component of percentage：
Pour-point depressant：0.2%-4%；
Polymethacrylate viscosity index improver：3%-20%；
Ashless anti-wear hydraulic oil complexing agent：0.2%-2%；
Defoamer：0.005%-0.5%；
Demulsifier：0.001-0.05%；
Base oil：Surplus.
Preferably, the pour-point depressant is polyalphaolefin type pour-point depressant or ester type pour-point depressant；The total addition level of pour-point depressant exists
0.4-3%.
Because containing wax in base oil, at low temperature, wax easily forms the brilliant three-dimensional mesh structure of wax, forms gel, makes basis
Oil mobility is deteriorated, and polyalphaolefin type pour-point depressant or ester type pour-point depressant separate out at low temperature, can prevent the brilliant three-dimensional mesh structure of wax
Increase, so as to reduce condensation point.In general, the side chain number in the Precipitation Temperature and molecular structure of pour-point depressant influences on depression effeCt
It is larger.
Preferably, the polyalphaolefin type pour-point depressant is the type pour-point depressant of polyalphaolefin -2；The ester type pour-point depressant is average
Ester type pour-point depressant of the carbon number in 12-14 carbon atom.
The present invention has the type pour-point depressant of polyalphaolefin -2 of fine depression effeCt to refining the higher base oil of degree；Its
Pour-point depressant in the middle ester type pour-point depressant present invention selects average carbon number in the ester type pour-point depressant of 12-14 carbon atom.
Preferably, the molecular weight of the Polymethacrylate viscosity index improver is in 5-7 ten thousand, addition
5%-17%.
When polymethacrylates molecular weight is generally below 100,000, there is preferable depression effeCt, but general molecule
Amount is lower, and viscosity index (VI) effect can be poorer.The inventors discovered that in the system of inventive formulation, when its molecular weight is in 5-7 ten thousand
When, it is used cooperatively with the specific pour-point depressant of the present invention, not only depression effeCt is better, and its viscosity index (VI) effect is also very simultaneously
Remarkably.Its principle is：
Polymethacrylates there is certain depression effeCt to be because at low temperature, the alkyl of side chain can form eutectic with wax,
The three-dimensional mesh structure of wax is prevented to form gel, because it is in the Precipitation Temperature and polyalphaolefin type pour-point depressant or ester type pour point depression of low temperature
Agent is different, and the structure of side chain is different so that can have more preferable depression effeCt during both compounding uses.And other kinds of viscosity
Index improver is such as：OCP (ethylene-propylene copolymer), PIB (polyisobutene) type viscosity index improver do not have pour-point depressing process.
Preferably, the ashless anti-wear hydraulic oil complexing agent is selected from LZ5042, Hitec 543, Irgaluble ML
3050A、Elco 160；Its addition is in 0.6-1.8%；
Preferably, the defoamer is silicone-type defoamer or polyacrylate defoamer, its addition is in 0.01%-
0.5%.
Preferably, the demulsifier is polyethers family macromolecule or glycol ester, its addition is in 0.002-0.04%.
Preferably, the base oil is selected from three class base oils, saturated polyol ester, the polyethers of hydrofinishing.
Preferably, the polyethers is oil soluble polyether.
A kind of preparation method of the ashless hydraulic fluid of high viscosity index (HVI) low pour point, comprises the following steps：
It is compound that base oil, pour-point depressant, Polymethacrylate viscosity index improver, ashless anti-wear hydraulic oil are weighed respectively
Agent, defoamer and demulsifier, 55-65 DEG C is heated to after well mixed, is stirred to clarify transparent.
It is compared with the prior art, the beneficial effects of the invention are as follows：
1st, be used cooperatively from molecular weight in 5-7 ten thousand polymethacrylates with pour-point depressant of the present invention has good increasing simultaneously
Add the effect of viscosity index (VI), it may have good depression effeCt, reduce the usage amount of pour-point depressant.
2nd, selection and polymethacrylates have the polyalphaolefin type or ester type pour-point depressant preferably to act synergistically, can be more
Pour point is reduced well, improves hydraulic oil low temperature flow.
Embodiment
With reference to embodiment, the invention will be further described.
Embodiment 1
A kind of ashless hydraulic fluid of high viscosity index (HVI) low pour point, its preparation method are：740.8g 70N (hydrofinishings are taken respectively
Three class base oils), 119.8g Priolube 3970 (saturated polyol ester), 25g Infineum V382 (polyalphaolefin-
2 types), 100g LZ87708 (polymethacrylates pour-point depressant of the molecular weight in 5-7 ten thousand), 12g Hitec 543 it is (ashless anti-
Grinding fluid presses oil complexing agent), 3g T903 (silicone-type defoamer), 0.2g T1001 (polyethers family macromolecule) be in volume
In 2000ml beaker, 60 DEG C are heated to, is stirred to clarify transparent.
Embodiment 2
A kind of ashless hydraulic fluid of high viscosity index (HVI) low pour point, its preparation method are：Take respectively 420g 70N (hydrofinishing
Three class base oils), 412.3g 100N (three class base oils of hydrofinishing), 30g Viscoplex1-500 (polyalphaolefins -2
Type), 120g LZ7702 (polymethacrylates pour-point depressant of the molecular weight in 5-7 ten thousand), 15g LZ5042 (ashless wear-resistant liquid
Force feed complexing agent), 2.5g LZ889A (polyacrylate defoamer), 0.2g DL32 (polyethers family macromolecule) be in volume
In 2000ml beaker, 60 DEG C are heated to, is stirred to clarify transparent.
Embodiment 3
A kind of ashless hydraulic fluid of high viscosity index (HVI) low pour point, its preparation method are：771.9g 150N (hydrofinishings are taken respectively
Three class base oils), 70g 100N (three class base oils of hydrofinishing), 25g Infineum V382 (polyalphaolefins -2
Type), 118g Viscoplex0-110 (polymethacrylates pour-point depressant of the molecular weight in 5-7 ten thousand), 12g Irgaluble
ML 3050A (ashless anti-wear hydraulic oil complexing agent), 3g T903 (silicone-type defoamer), (polyethers are high by 0.1g T1001
Molecule) in the beaker that volume is 2000ml, 60 DEG C are heated to, is stirred to clarify transparent.
Embodiment 4
A kind of ashless hydraulic fluid of high viscosity index (HVI) low pour point, its preparation method are：740.8g 70N (hydrofinishings are taken respectively
Three class base oils), 119.8g Priolube 3970 (saturated polyol ester), 15g Infineum V382 (polyalphaolefin-
2 types), 10g T809A (ester type pour-point depressant of the average carbon number in 12-14 carbon atom), (molecular weight is in 5-7 by 100g LZ87708
Ten thousand polymethacrylates pour-point depressant), 12g Hitec 543 (ashless anti-wear hydraulic oil complexing agent), 3g T903 (silica
Alkane type defoamer), 0.2g T1001 (polyethers family macromolecule) in the beaker that volume is 2000ml, be heated to 60 DEG C, stirring is extremely
Clear.
The inspection for the project such as viscosity, viscous finger, pour point, demulsification, flash-point, copper corrosion, anti-foaming property of being taken exercises to embodiment 1-3
Survey, shown in testing result following table：
Have more preferably to better illustrate polymethacrylates and polyalphaolefin type pour-point depressant or ester type pour-point depressant compounding use
Using effect, set up comparative run herein.
A：96.7% Huizhou 150N, 3%JX6240 (polyisobutene), 0.3%Infineum V386；
B：：96.7% Huizhou 150N, 3%T611 (ethylene-propylene copolymer), 0.3%Infineum V386；
C：96.7% Huizhou 150N, 3%T602 (polymethacrylates), 0.3%Infineum V386；
D：99.7% Huizhou 150N, 0.3%Infineum V386；
E：100% Huizhou 150N.
As seen from the above table, illustrate JX6240 (polyisobutene) and T611 (ethylene-propylene copolymer) without pour-point depressing process, and pour-point depressant
Compounding use can not influence pour point, and T602 (polymethacrylates) and pour-point depressant compounding use can play good effect.
Raw materials used in the present invention, equipment, it is the conventional raw material, equipment of this area unless otherwise noted；In the present invention
Method therefor, it is the conventional method of this area unless otherwise noted.
It is described above, only it is presently preferred embodiments of the present invention, not the present invention is imposed any restrictions, it is every according to the present invention
Any simple modification, change and the equivalent transformation that technical spirit is made to above example, still fall within the technology of the present invention side
The protection domain of case.
Claims (10)
1. a kind of ashless hydraulic fluid of high viscosity index (HVI) low pour point, it is characterised in that include the component of following mass percent：
Pour-point depressant：0.2%-4%；
Polymethacrylate viscosity index improver：3%-20%；
Ashless anti-wear hydraulic oil complexing agent：0.2%-2%；
Defoamer：0.005%-0.5%；
Demulsifier：0.001-0.05%；
Base oil：Surplus.
A kind of 2. ashless hydraulic fluid of high viscosity index (HVI) low pour point as claimed in claim 1, it is characterised in that the pour-point depressant
For polyalphaolefin type pour-point depressant or ester type pour-point depressant；The total addition level of pour-point depressant is in 0.4-3%.
A kind of 3. ashless hydraulic fluid of high viscosity index (HVI) low pour point as claimed in claim 2, it is characterised in that the poly- α alkene
Hydrocarbon type pour-point depressant is the type pour-point depressant of polyalphaolefin -2；The ester type pour-point depressant is ester type drop of the average carbon number in 12-14 carbon atom
Solidifying agent.
A kind of 4. ashless hydraulic fluid of high viscosity index (HVI) low pour point as claimed in claim 3, it is characterised in that the poly- methyl
The molecular weight of acrylic ester type viscosity index improver is in 5-7 ten thousand, addition 5%-17%.
5. a kind of ashless hydraulic fluid of high viscosity index (HVI) low pour point as claimed in claim 1, it is characterised in that described ashless anti-
Grinding fluid force feed complexing agent is selected from LZ5042, Hitec 543, Irgaluble ML 3050A, Elco 160；Its addition is in 0.6-
1.8%。
A kind of 6. ashless hydraulic fluid of high viscosity index (HVI) low pour point as claimed in claim 1, it is characterised in that the defoamer
For silicone-type defoamer or polyacrylate defoamer, its addition is in 0.01%-0.5%.
A kind of 7. ashless hydraulic fluid of high viscosity index (HVI) low pour point as claimed in claim 1, it is characterised in that the demulsifier
For polyethers family macromolecule or glycol ester, its addition is in 0.002-0.04%.
A kind of 8. ashless hydraulic fluid of high viscosity index (HVI) low pour point as claimed in claim 1, it is characterised in that the base oil
Three class base oils, saturated polyol ester, polyethers selected from hydrofinishing.
9. a kind of ashless hydraulic fluid of high viscosity index (HVI) low pour point as claimed in claim 8, it is characterised in that the polyethers is
Oil soluble polyether.
10. a kind of preparation method of the ashless hydraulic fluid of high viscosity index (HVI) low pour point as described in one of claim 1-9, it is special
Sign is to comprise the following steps：
It is compound that base oil, pour-point depressant, Polymethacrylate viscosity index improver, ashless anti-wear hydraulic oil are weighed respectively
Agent, defoamer and demulsifier, 55-65 DEG C is heated to after well mixed, is stirred to clarify transparent.
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| CN108329979A (en) * | 2018-01-20 | 2018-07-27 | 盘锦北方沥青股份有限公司 | A kind of long-life energy-saving hydraulic oil and preparation method thereof |
| CN109266424A (en) * | 2018-09-07 | 2019-01-25 | 苏州安美润滑科技有限公司 | A kind of offroad vehicle damper hydraulic system lubricating oil and preparation method thereof |
| CN111218325A (en) * | 2019-12-03 | 2020-06-02 | 圣保路石油化工（天津）股份有限公司 | Ultralow-temperature ashless anti-wear hydraulic oil and preparation method thereof |
| CN114958462A (en) * | 2021-07-31 | 2022-08-30 | 福斯润滑油(中国)有限公司 | Synthetic hydraulic oil for wind power generation hydraulic system and preparation method thereof |
| CN116410806A (en) * | 2021-12-30 | 2023-07-11 | 中国石油天然气股份有限公司 | Hydraulic oil and hydraulic system |
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