CN101812352B - Antioxidant for hydraulic oil and preparation and application thereof - Google Patents
Antioxidant for hydraulic oil and preparation and application thereof Download PDFInfo
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Abstract
The invention provides an antioxidant for a hydraulic cylinder, which comprises the following components in part by weight: 4 to 10 parts of diisooctyl diphenylamine, 4 to 10 parts of phenyl-alpha-naphthylamine, 5 to 10 parts of 2,6-di-tert-butyl phenol and 6 to 15 parts of thiocarbamate. The antioxidant is prepared by researching the synergistic effect among the antioxidant, a main antioxidant and an antioxidant additive, and compounding the diisooctyl diphenylamine, the phenyl-alpha-naphthylamine, the 2,6-di-tert-butyl phenol and the thiocarbamate, achieves the complementary performance advantages of a plurality of types of antioxidants, and greatly improves the long-term high-temperature antioxidant stability of oil products.
Description
Technical field
The present invention relates to a kind of antioxidant for hydraulic cylinder and preparation and application thereof, belong to the industrial lubricant technical field.
Background technology
Hydraulic machinery has been widely used in industries such as iron and steel, electric power, coal and machinery.Hydraulic efficiency oil as dynamic medium is the critical material of hydraulic transmission technology, also is one of three kinds of important oil products of industrial lubrication oil consumption maximum.Continuous development along with modern hydraulic technology, the hydraulic efficiency system that has usually is under high pressure, the hot conditions and works (for example the hydraulic efficiency system of Steel Plant often contacts with high-temperature body even naked light, the hydraulic efficiency system in power station often contact with high-temperature steam), and thermostability and the oxidation stability of employed hydraulic efficiency oil proposed more harsh requirement.
Fire resistant hydraulic fluid is in work, and the temperature of working point is generally 80～90 ℃, and local temperature may be higher.The easier deterioration by oxidation of oil product under hot conditions generates acidic substance, and the parts generation corrosion to hydraulic efficiency installation influences the normal operation of hydraulic efficiency installation; Viscosity can increase after the simultaneous oxidation, and this also can influence the operating accuracy of hydraulic efficiency installation and increase energy consumption.In order to prolong the work-ing life of hydraulic efficiency installation, slow down the deterioration by oxidation of oil product, need to add various oxidation inhibitor.Oil product oxidation inhibitor commonly used has radical chain terminator, as phenol, amine type compound; Peroxide decomposer is as sulfide, contain sulfur phosphorus compound etc.; At present, these oxidation inhibitor also are difficult to satisfy above-mentioned requirements.
Summary of the invention
The objective of the invention is to overcome above the deficiencies in the prior art, a kind of antioxidant for hydraulic cylinder is provided, to play the work-ing life that prolongs hydraulic efficiency installation, the effect that slows down the deterioration by oxidation of oil product.
The present invention solves above technical problem by the following technical solutions:
A kind of antioxidant for hydraulic cylinder comprises di-iso-octyldiphenylamine, phenyl-a-naphthylamine, 2,6 DI-tert-butylphenol compounds and thiocarbamate, and the proportioning of each component is as follows:
Di-iso-octyldiphenylamine 4～10 weight parts;
Phenyl-a-naphthylamine 4～10 weight parts;
2,6 DI-tert-butylphenol compounds, 5～10 weight parts;
Thiocarbamate 6～15 weight parts.
Preferably, the proportioning of each component is as follows in the described oxidation inhibitor:
Di-iso-octyldiphenylamine 5～8 weight parts;
Phenyl-a-naphthylamine 5～8 weight parts;
2,6 DI-tert-butylphenol compounds, 6～9 weight parts;
Thiocarbamate 8～14 weight parts.
Above-mentioned oxidation inhibitor provided by the present invention can be about to each raw material and mix by conventional physical mixed method preparation, and stirring gets final product.
The present invention is by the Research on synergistic effect between oxidation inhibitor, primary antioxidant and the antioxygen auxiliary agent, select by di-iso-octyldiphenylamine, phenyl-a-naphthylamine, 2, the composite oxidation inhibitor that forms of 6 DI-tert-butylphenol compounds and thiocarbamate, reach the performance advantage complementation of various antioxidants, improved the long term high temperature anti-oxidative stability of hydraulic efficiency oil greatly.
Above-mentioned oxidation inhibitor provided by the present invention can be used for preparing hydraulic efficiency oil or high-temperature chain oil.
When above-mentioned oxidation inhibitor provided by the present invention is used for preparation hydraulic efficiency oil or high-temperature chain oil, can be used with lubricating oil or the grease base plinth oil phase of routine, the base oil of described routine as, mineral oil, high-precision (refining) mineral oil, alkylation mineral oil, poly-alpha olefins, polyethers synthetic oil, alkylbenzene oil, biodegradable ester class wet goods.
Among the present invention, the use that preferably matches with the multiple ester of base oil amyl-based polyol diprotic acid is higher than 80 ℃ fire resistant hydraulic fluid as working point temperature in the hydraulic efficiency system.
The multiple ester of described amyl-based polyol diprotic acid is with C by earlier
5～12The complete esterification of alcohol mixture formed with neopentyl glycol, TriMethylolPropane(TMP) and new penta tetrol of the carboxyl of binary lipid acid after, use C again
14～20Unsaturated unary fatty acid end-blocking and make.
In the multiple ester of above-mentioned amyl-based polyol diprotic acid, in the described alcohol mixture, the molar percentage of described neopentyl glycol, TriMethylolPropane(TMP), new penta tetrol is as follows:
Neopentyl glycol: 20～30%;
TriMethylolPropane(TMP): 50～60%;
New penta tetrol: 10～30%.
Preferably, the molar percentage of described neopentyl glycol, TriMethylolPropane(TMP), new penta tetrol is as follows:
Neopentyl glycol: 20～25%
TriMethylolPropane(TMP): 50～60%
New penta tetrol: 20～25%
Preferable, described C
5～12Binary lipid acid be two kinds of C
5～12The mixing of straight chain binary lipid acid, described two kinds of C
5～ 12The mol ratio 1: 1～1: 4 of straight chain binary lipid acid.Preferably, described C
5～12Binary lipid acid be two kinds of C
6～12The mixing of straight chain binary lipid acid, described two kinds of C
6～10The mol ratio of straight chain binary lipid acid be 1: 1～1: 2
Described straight chain binary lipid acid can be selected from pentanedioic acid, hexanodioic acid, pimelic acid, suberic acid, nonane diacid, sebacic acid, undecane diacid or dodecanedioic acid.
Preferable, described C
14～20Unsaturated unary fatty acid be selected from vegetable oil acid or hexadecylenic acid.
In the multiple ester of the polynary liquor-saturated diprotic acid of above-mentioned neo-pentyl, described with C
5～12The complete esterification of alcohol mixture formed with neopentyl glycol, TriMethylolPropane(TMP) and new penta tetrol of the carboxyl of binary lipid acid, referring to needs to guarantee that the carboxyl of described binary lipid acid is by esterification fully.Can pass through integral molar quantity and the described C of the alcohol mixture of the described neopentyl glycol of control, TriMethylolPropane(TMP) and new penta tetrol composition
5～12The ratio of molar weight of binary fatty acid esterification reaction be to realize that the error about 1% can be arranged between the two in about 2: 1.
The described C that uses
14～20Unsaturated unary fatty acid end-blocking refer to, after described neopentyl glycol, TriMethylolPropane(TMP) and new penta tetrol and the described binary lipid acid generation esterification polyreaction, the whole hydroxyls that have more again with C
14～20Unary fatty acid carry out the esterification end-blocking.The final multiple ester of the amyl-based polyol diprotic acid that comprises DOPCP, TriMethylolPropane(TMP) alcohol ester and new Doutrate that forms, the structural formula that comprises is as follows:
[C
nH
2n+1COOC
5H
10COO]
2C
mH
2m n＝13～19，m＝3～10；
{[C
nH
2n+1COO]
2C
6H
11COO}
2C
mH
2m n＝13～19，m＝3～10；
{[C
nH
2n+1COO]
3C
5H
8COO}
2C
mH
2m n＝13～19，m＝3～10。
The preparation method of the multiple ester of above-mentioned amyl-based polyol diprotic acid may further comprise the steps:
1) makes C
5～12The alcohol mixture formed of binary lipid acid and neopentyl glycol, TriMethylolPropane(TMP) and new penta tetrol, esterification takes place under the katalysis of catalyzer;
2) after reaction was finished described in the step 1, adding molar weight was described C
5～12At least 4 times C of binary lipid acid molar weight
14～20Unary fatty acid mixing esterification, obtain reaction product;
3) remove unreacted excess fatty acids and the described catalyzer of step 1 in the products therefrom in the step 2, obtain the multiple ester of described amyl-based polyol diprotic acid.
In the step 1), described catalyzer is zirconic acid four monooctyl esters and tosic acid, and wherein, the molar weight of described zirconic acid four monooctyl esters is described C
5～12Binary lipid acid integral molar quantity 0.95～1.05%, the molar weight of described tosic acid is described C
5～12Binary lipid acid integral molar quantity 1.9～2.1%; The temperature of described esterification is 160～180 ℃, and the reaction times is 140～180 minutes.
Step 2) in, the temperature of reaction is 200～220 ℃, and the reaction times is 100～120 minutes; Described C
14～20The integral molar quantity of unary fatty acid need in the more described alcohol mixture not with the integral molar quantity of the hydroxyl of described binary fatty acid response more excessive so that the second step esterification is complete.
In the step 3), remove described unreacted excess fatty acids by the mode of underpressure distillation.According to the character of selected lipid acid, those skilled in the art can determine the condition of described underpressure distillation, distills under in 200 ℃, the vacuum condition of 3.2Kpa.
In the step 3), remove described catalyzer by the mode of alkali cleaning and washing.The method of this alkali cleaning and washing is known by those skilled in the art, as: the water-soluble neutralization of yellow soda ash of reaction product elder generation adding 3～5% can be washed then.After catalyzer is removed, after dehydration, filtration treatment, can obtain the multiple ester of the amyl-based polyol diprotic acid described in the present invention again.
Further, oxidation inhibitor of the present invention can be used for also preparing that the working point temperature is higher than 80 ℃ fire resistant hydraulic fluid in the hydraulic efficiency system, as comprises following components in weight percentage:
Oxidation inhibitor 1.9～4.5% described in the present invention;
Extreme pressure anti-wear additives 1.5～3.5%;
Defoamer 5～50ppm;
Rust-preventive agent 0.1～0.4%;
The multiple ester 92～97% of amyl-based polyol diprotic acid;
In the above-mentioned fire resistant hydraulic fluid, the adding of described oxidation inhibitor, extreme pressure anti-wear additives, defoamer and rust-preventive agent is in order to satisfy all round properties requirement of hydraulic efficiency installation under the high temperature and high pressure environment, as satisfies the lubricity, high-temperature thermal oxidation stability, anti-foaming properties, corrosion resistance of oil product under the long term operation etc.
Preferably, described fire resistant hydraulic fluid comprises following components in weight percentage:
Oxidation inhibitor 2.4～3.9% described in the present invention;
Extreme pressure anti-wear additives 2.3～2.6%;
Defoamer 10～30ppm;
Rust-preventive agent 0.1～0.2%;
The multiple ester 93.9～94.5% of amyl-based polyol diprotic acid.
Preferable, described extreme pressure anti-wear additives is tritolyl phosphate and thiophosphatephosphorothioate.Better, described tritolyl phosphate accounts for 2～4 weight parts, and described thiophosphatephosphorothioate accounts for 1～3 weight part.
Described defoamer is methyl-silicone oil.
Described rust-preventive agent is benzotriazole and benzotriazole derivative.Preferable, described benzotriazole accounts for 1～4 weight part, and described benzotriazole derivative accounts for 1～4 weight part.
Described benzotriazole derivative is homemade additive T551.
Above-mentioned fire resistant hydraulic fluid can be about to each raw material and mix by conventional physical mixed method preparation, and stirring gets final product.
The present invention reaches various antioxidant properties and has complementary advantages by selecting the composite collaborative of several oxidation inhibitor, has improved the long term high temperature anti-oxidative stability of oil product greatly.Adopt the formulated fire resistant hydraulic fluid of oxidation inhibitor of the present invention and high-temperature chain oil, have excellent high-temperature oxidation resistant stability, non-flame properties, easily contact applicable to various High Temperature High Pressure in the hydraulic efficiency system of naked light, as continuous casting and rolling hydraulic efficiency system, desulfurizing iron system and the RH vacuum oven equipment of Steel Plant.
Embodiment
Further set forth the present invention below in conjunction with embodiment.Should be understood that these embodiment only are used for explanation the present invention, but not limit the scope of the invention.The reagent of the experimental technique of unreceipted actual conditions and undeclared prescription is according to the condition of normal condition or manufacturers suggestion and carries out or dispose in the following example.
The preparation of embodiment 1 oxidation inhibitor
Press the weight part formulated oxidation inhibitor in the table 1.
Compound method: raw material mixed by proportioning get final product.
Table 1
| 1# | 2# | 3# | 4# | |
| Di-iso-octyldiphenylamine (weight part) | 5 | 8 | 4 | 10 |
| Phenyl-a-naphthylamine (weight part) | 5 | 8 | 4 | 10 |
| 2,6 DI-tert-butylphenol compounds (weight part) | 9 | 6 | 10 | 5 |
| Thiocarbamate (weight part) | 14 | 8 | 15 | 6 |
The structural formula of thiocarbamate is (C in the table 1
4H
9)
2NCS
2CS
2CN (C
4H
9)
2
The performance of embodiment 2 oxidation inhibitor
Adopt the multiple ester of amyl-based polyol diprotic acid (the 1# prescription among the embodiment 3) to mix as the various oxidation inhibitor in base oil and the following table, wherein said base oil accounts for 98wt%, and the total amount of oxidation inhibitor accounts for 2wt%.Each raw material is mixed by proportioning, stir.
Table 2
Annotate: the total amount of oxidation inhibitor is 2.0%, and wherein, the structural formula of thiocarbamate is (C
4H
9)
2NCS
2CS
2CN (C
4H
9)
2
Data as can be seen from table 2, the present invention selects by di-iso-octyldiphenylamine, phenyl-a-naphthylamine, 2, the composite oxidation inhibitor that forms of 6 DI-tert-butylphenol compounds and thiocarbamate, reach the performance advantage complementation of various antioxidants, improved the long term high temperature anti-oxidative stability of oil product greatly.
The preparation of the multiple ester of embodiment 3 amyl-based polyol diprotic acid
Preparation process is as follows:
1, selecting carbon number for use is 5～12 diprotic acid, add amount of substance and be the alcohol mixture of being formed by neopentyl glycol, TriMethylolPropane(TMP) and new penta tetrol of 2 times of this diprotic acid, add again amount of substance for the tosic acid of zirconic acid four monooctyl esters of this mixed dibasic acid 0.95～1.05% and 1.9～2.1% as catalyzer, stirring reaction is 140～180 minutes under 160～180 ℃ temperature, finishes the first step esterification.
2, adding amount of substance is that the carbon number of mixed dibasic acid more than 4 times is 14 to 20 unary fatty acid, (it is more excessive that unary fatty acid is wanted, so that the second step esterification is complete), stirring reaction is 100～120 minutes under 200～220 ℃ temperature, finishes the second step esterification.
3, with reaction product at 200 ℃, carry out underpressure distillation under the condition of 3.2Kpa, can remove unreacted excess fatty acids.
4, reaction product is cooled to 60 ℃ and puts into the alkali cleaning still, add 3～5% water-soluble neutralization of yellow soda ash earlier, can remove catalyzer and part unreacted reactant; Washing then, also is in order to remove the residual and catalyzer after the alkali cleaning.
5, under vacuum condition, dehydrate, filter and namely get the multiple ester of desired amyl-based polyol diprotic acid.
Each raw material and consumption are as shown in table 3:
Table 3
Annotate: the data in the table 2 are all represented the mole proportion relation of each stock yard.
Every performance of the multiple ester of the amyl-based polyol diprotic acid that employing above-mentioned raw materials proportioning and preparation method obtain is as shown in table 4:
Table 4
The preparation of embodiment 4 environmentally friendly synthetic fire resistant hydraulic fluids
By following weight percent preparation raw material, mix, can obtain environmentally friendly synthetic fire resistant hydraulic fluid.
Di-iso-octyldiphenylamine 0.5%
Phenyl-a-naphthylamine 0.5%
2,6 DI-tert-butylphenol compounds 0.9%
Thiocarbamate 1.4%
Tritolyl phosphate 1.8%
Thiophosphatephosphorothioate 0.8%
Methyl-silicone oil 10ppm
Benzotriazole 0.14%
Benzotriazole derivative (T551) 0.06%
1# prescription base oil 93.9% among the embodiment 1
The structural formula of described thiocarbamate is (C
4H
9)
2NCS
2CS
2CN (C
4H
9)
2
Environmentally friendly synthetic fire resistant hydraulic fluid to present embodiment detects, and the result is as follows:
Table 5
| Project | Technical indicator | Measured data | Test method |
| 40 ℃ of mm of kinematic viscosity 2/s 100℃ mm 2/s | 68 # 68±6.8 | 62.16 11.86 | GB/T265 |
| Viscosity index | ≥180 | 191 | GB/T2541 |
| Flash-point (opening) ℃ | ≥260 | 296 | GB/T3536 |
| Burning-point ℃ | ≥310 | 334 | GB/T3536 |
| Pour point ℃ | ≤-20 | -30 | GB/T3535 |
| Moisture % | ≤ vestige | Do not have | GB/T 260 |
| Acid number mgKOH/g | ≤2.6 | 0.22 | GB/T 264 |
| Copper corrosion (100 ℃ * 3h) level | ≤1 | 1a | GB/T5096 |
| 24 ℃, 93 ℃, back 24 ℃ of foaming properties ml/ml | ≤ 100/0 100/0 100/0 | 5/0 15/0 5/0 | GB/T12579 |
| 54 ℃ of min of demulsification performance (40-37-3) | ≤30 | 13 | GB/T 7305 |
| Mechanical impurity % | Do not have | Do not have | GB/T 511 |
| Oxidation stability min | Actual measurement | 936 | SH/T 0193 |
The performance of the fire resistant hydraulic fluid that present embodiment obtains and the like product of import (Quintolubric 888) compares: pour point is low, flash-point burning-point height, and excellent demulsification performance, anti-foaming properties excellence, the extreme pressure anti-wear excellence the results are shown in Table 6.
Table 6
The fire resistant hydraulic fluid that present embodiment obtains is on probation at the RH of steelworks vacuum oven, through nearly 5 years use, should synthesize the normal working performance requirement that (ester type) fire resistant hydraulic fluid can satisfy equipment, every index is all normal, has substituted original import fire resistant hydraulic oil (table 7 is the analytical results of uninterrupted sampling over 5 years) fully.
The practical application of table 7 fire resistant hydraulic fluid (I)
The preparation of embodiment 5 environmentally friendly synthetic fire resistant hydraulic fluids
By following weight percent preparation raw material, mix, can obtain environmentally friendly synthetic fire resistant hydraulic fluid.
Di-iso-octyldiphenylamine 0.8%
Phenyl-a-naphthylamine 0.8%
2,6 DI-tert-butylphenol compounds 0.6%
Thiocarbamate 0.8%
Tritolyl phosphate 1.1%
Thiophosphatephosphorothioate 1.2%
Methyl-silicone oil 30ppm
Benzotriazole 0.08%
Benzotriazole derivative (T551) 0.12%
2# prescription base oil 94.5% among the embodiment 1
The structural formula of described thiocarbamate is (C
4H
9)
2NCS
2CS
2CN (C
4H
9)
2
Above-mentioned environmentally friendly synthetic fire resistant hydraulic fluid is detected result such as table 8.
Table 8
| Project | Technical indicator | Measured data | Test method |
| 40 ℃ of mm of kinematic viscosity 2/s 100℃ mm 2/s | 68# 68±6.8 | 62.64 12.08 | GB/T265 |
| Viscosity index | ≥180 | 194 | GB/T2541 |
| Flash-point (opening) ℃ | ≥260 | 300 | GB/T3536 |
| Burning-point ℃ | ≥310 | 332 | GB/T3536 |
| Pour point ℃ | ≤-20 | -30 | GB/T3535 |
| Moisture % | ≤ vestige | Do not have | GB/T 260 |
| Acid number mgKOH/g | ≤2.6 | 0.30 | GB/T 264 |
| Copper corrosion (100 ℃ * 3h) level | ≤1 | 1a | GB/T5096 |
| 24 ℃, 93.5 ℃, back 24 ℃ of foaming properties ml/ml | ≤ 100/0 100/0 100/0 | ≤ 10/0 20/0 10/0 | GB/T12579 |
| 54 ℃ of min of demulsification performance (40-37-3) | ≤30 | 8 | GB/T 7305 |
| Mechanical impurity % | Do not have | Do not have | GB/T 511 |
| Oxidation stability min | Actual measurement | 984 | SH/T 0193 |
The performance of the fire resistant hydraulic fluid that present embodiment obtains and the like product of import (Quintolubric 888) compares: pour point is low, flash-point burning-point height, and excellent demulsification performance, anti-foaming properties excellence, the extreme pressure anti-wear excellence the results are shown in Table 9.
Table 9
The alternative import oil product of the same type of fire resistant hydraulic fluid that present embodiment obtains is brought into use in import equipment continuous casting and rolling hydraulic efficiency system, through many uses half a year, satisfied the normal working performance requirement of equipment equally, obtained satisfied effect.Afterwards, in the enterprising enforcement usefulness of the desulfurizing iron system of steelworks, through the use in 1 year, the normal working performance that satisfies equipment fully required (table 10 is for using the analytical results of sampling behind half a year/one year) with this fire resistant hydraulic fluid
The practical application of table 10 fire resistant hydraulic fluid (II)
Use by three systems each 5 years, a year and half a year, to seeing carrying out conventional physics and chemistry detected result with oil sample, all test items change little, namely still meet the standard-required that dispatches from the factory through the oil sample that works long hours, show synthetic (ester type) fire resistant hydraulic fluid steady quality of the present invention, dependable performance, and continue the potentiality that increase the service life in addition.
The preparation of embodiment 6 environmentally friendly synthetic fire resistant hydraulic fluids
By following weight percent preparation raw material, mix, can obtain environmentally friendly synthetic fire resistant hydraulic fluid.
Di-iso-octyldiphenylamine 0.7%
Phenyl-a-naphthylamine 0.7%
2,6 DI-tert-butylphenol compounds 1.3%
Thiocarbamate 1.8%
Tritolyl phosphate 2.3%
Thiophosphatephosphorothioate 1.1%
Methyl-silicone oil 50ppm
Benzotriazole 0.02%
Benzotriazole derivative (T551) 0.08%
2# prescription base oil 92% among the embodiment 1
The structural formula of described thiocarbamate is (C
4H
9)
2NCS
2CS
2CN (C
4H
9)
2
Above-mentioned environmentally friendly synthetic fire resistant hydraulic fluid is detected result such as table 11.
Table 11
| Project | Technical indicator | Measured data | Test method |
| 40 ℃ of mm of kinematic viscosity 2/s 100℃ mm 2/s | 68# 68±6.8 | 64.45 12.74 | GB/T265 |
| Viscosity index | ≥180 | 202 | GB/T2541 |
| Flash-point (opening) ℃ | ≥260 | 310 | GB/T3536 |
| Burning-point ℃ | ≥310 | 338 | GB/T3536 |
| Pour point ℃ | ≤-20 | -36 | GB/T3535 |
| Moisture % | ≤ vestige | Do not have | GB/T 260 |
| Acid number mgKOH/g | ≤2.6 | 0.16 | GB/T 264 |
| Copper corrosion (100 ℃ * 3h) level | ≤1 | 1a | GB/T5096 |
| 24 ℃, 93 ℃, back 24 ℃ of foaming properties ml/ml | ≤ 100/0 100/0 100/0 | 5/0 10/0 10/0 | GB/T12579 |
| 54 ℃ of min of demulsification performance (40-37-3) | ≤30 | 8 | GB/T 7305 |
| Mechanical impurity % | Do not have | Do not have | GB/T 511 |
The preparation of embodiment 7 environmentally friendly synthetic fire resistant hydraulic fluids
By following weight percent preparation raw material, mix, can obtain environmentally friendly synthetic fire resistant hydraulic fluid.
Di-iso-octyldiphenylamine 0.7%
Phenyl-a-naphthylamine 0.7%
2,6 DI-tert-butylphenol compounds 0.2%
Thiocarbamate 0.3%
Tritolyl phosphate 0.5%
Thiophosphatephosphorothioate 1.0%
Methyl-silicone oil 5ppm
Benzotriazole 0.32%
Benzotriazole derivative (T551) 0.08%
2# prescription base oil 96.2% among the embodiment 1
The structural formula of described thiocarbamate is (C
4H
9)
2NCS
2CS
2CN (C
4H
9)
2
Above-mentioned environmentally friendly synthetic fire resistant hydraulic fluid is detected result such as table 12.
Table 12
| Project | Technical indicator | Measured data | Test method |
| 40 ℃ of mm of kinematic viscosity 2/s 100℃ mm 2/s | 68# 68±6.8 | 63.74 12.48 | GB/T265 |
| Viscosity index | ≥180 | 199 | GB/T2541 |
| Flash-point (opening) ℃ | ≥260 | 310 | GB/T3536 |
| Burning-point ℃ | ≥310 | 338 | GB/T3536 |
| Pour point ℃ | ≤-20 | -33 | GB/T3535 |
| Moisture % | ≤ vestige | Do not have | GB/T 260 |
| Acid number mgKOH/g | ≤2.6 | 0.15 | GB/T 264 |
| Copper corrosion (100 ℃ * 3h) level | ≤1 | 1a | GB/T5096 |
| 24 ℃, 93 ℃, back 24 ℃ of foaming properties ml/ml | ≤ 100/0 100/0 100/0 | 0/0 10/0 5/0 | GB/T12579 |
| 54 ℃ of min of demulsification performance (40-37-3) | ≤30 | 9 | GB/T 7305 |
| Mechanical impurity % | Do not have | Do not have | GB/T 511 |
The preparation of embodiment 8 high-temperature chain oils
By following weight percent preparation raw material, mix, can obtain high-temperature chain oil.
2# prescription base oil 65% among the embodiment 1
PRIOLUBE 1929 16％
Polyisobutene 15%
Di-iso-octyldiphenylamine 1.5%
Thiocarbamate 1.0%
Phosphoric acid ester 1.5%
Described PRIOLUBE 1929 is the product of CRODA company,
The molecular weight of described polyisobutene is 2400;
Described phosphoric acid ester is the product hostaphat 1322 of Clariant company;
The structural formula of described thiocarbamate is (C
4H
9)
2NCS
2CS
2CN (C
4H
9)
2
Above-mentioned synthesizing high temperature chain oils is detected result such as following table:
Table 13
Claims (2)
1. the working point temperature is higher than 80 ℃ fire resistant hydraulic fluid in the hydraulic efficiency system, comprises following components in weight percentage:
Oxidation inhibitor 1.9～4.5%;
Extreme pressure anti-wear additives 1.5～3.5%;
Defoamer 5～50ppm;
Rust-preventive agent 0.1～0.4%;
The multiple ester 92～97% of amyl-based polyol diprotic acid;
Each component concentration sum is absolutely;
Described oxidation inhibitor comprises di-iso-octyldiphenylamine, phenyl-a-naphthylamine, 2,6 DI-tert-butylphenol compounds and thiocarbamate, and the proportioning of each component is as follows:
Di-iso-octyldiphenylamine 4～10 weight parts;
Phenyl-a-naphthylamine 4～10 weight parts;
2,6 DI-tert-butylphenol compounds, 5～10 weight parts;
Thiocarbamate 6～15 weight parts;
The multiple ester of described amyl-based polyol diprotic acid is with C by earlier
5～12The complete esterification of alcohol mixture formed with neopentyl glycol, TriMethylolPropane(TMP) and new penta tetrol of the carboxyl of binary lipid acid after, use C again
14～20Unsaturated unary fatty acid end-blocking and make.
2. fire resistant hydraulic fluid as claimed in claim 1 is characterized in that, the proportioning of described each component of oxidation inhibitor is as follows:
Di-iso-octyldiphenylamine 5～8 weight parts;
Phenyl-a-naphthylamine 5～8 weight parts;
2,6 DI-tert-butylphenol compounds, 6～9 weight parts;
Thiocarbamate 8～14 weight parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010170555 CN101812352B (en) | 2010-05-11 | 2010-05-11 | Antioxidant for hydraulic oil and preparation and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010170555 CN101812352B (en) | 2010-05-11 | 2010-05-11 | Antioxidant for hydraulic oil and preparation and application thereof |
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| CN102311855B (en) * | 2011-08-16 | 2013-04-24 | 中国人民解放军空军油料研究所 | Aviation lubricating oil composition |
| CN102311854B (en) * | 2011-08-16 | 2013-04-24 | 中国人民解放军空军油料研究所 | Preparation method of aviation lubricant composition |
| CN102703169B (en) * | 2012-06-06 | 2014-02-12 | 上海火炬润滑油有限公司 | Anti-wear hydraulic oil capable of preventing chromium plated metal from blackening and bluing, as well as preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1255533A (en) * | 1998-11-30 | 2000-06-07 | 英国乙基石油添加剂有限公司 | Lubricant compsns. displaying permanent oxidation stability |
| CN1594519A (en) * | 2004-07-07 | 2005-03-16 | 上海海联润滑材料科技有限公司 | Lubricating oil for gaseous propellant engine |
| CN101693851A (en) * | 2009-09-30 | 2010-04-14 | 中国石油化工股份有限公司 | Synthetic high-temperature lubricating grease and production method thereof |
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| US7683017B2 (en) * | 2007-06-20 | 2010-03-23 | Chevron Oronite Company Llc | Synergistic lubricating oil composition containing a mixture of a nitro-substituted diarylamine and a diarylamine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1255533A (en) * | 1998-11-30 | 2000-06-07 | 英国乙基石油添加剂有限公司 | Lubricant compsns. displaying permanent oxidation stability |
| CN1594519A (en) * | 2004-07-07 | 2005-03-16 | 上海海联润滑材料科技有限公司 | Lubricating oil for gaseous propellant engine |
| CN101693851A (en) * | 2009-09-30 | 2010-04-14 | 中国石油化工股份有限公司 | Synthetic high-temperature lubricating grease and production method thereof |
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