CN114231336B - Composite preservative and preparation method and application thereof - Google Patents
Composite preservative and preparation method and application thereof Download PDFInfo
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- CN114231336B CN114231336B CN202111569996.4A CN202111569996A CN114231336B CN 114231336 B CN114231336 B CN 114231336B CN 202111569996 A CN202111569996 A CN 202111569996A CN 114231336 B CN114231336 B CN 114231336B
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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
- C10M141/00—Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential
- C10M141/10—Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential at least one of them being an organic phosphorus-containing compound
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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
- C10M173/00—Lubricating compositions containing more than 10% water
- C10M173/02—Lubricating compositions containing more than 10% water not containing mineral or fatty oils
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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
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/04—Elements
- C10M2201/041—Carbon; Graphite; Carbon black
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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
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/02—Hydroxy compounds
- C10M2207/021—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2207/022—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms containing at least two hydroxy groups
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- 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
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/04—Ethers; Acetals; Ortho-esters; Ortho-carbonates
- C10M2207/046—Hydroxy ethers
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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
- 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
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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
- 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
- C10M2209/107—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of two or more specified different alkylene oxides covered by groups C10M2209/104 - C10M2209/106
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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
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
- C10M2215/04—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2215/042—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms containing hydroxy groups; Alkoxylated derivatives thereof
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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
- 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
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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
- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/10—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring
- C10M2219/104—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring containing sulfur and carbon with nitrogen or oxygen in the ring
- C10M2219/106—Thiadiazoles
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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
- 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
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- 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
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- 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
- C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
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- 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
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- 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
- C10N2030/12—Inhibition of corrosion, e.g. anti-rust agents or anti-corrosives
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- 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
- C10N2030/18—Anti-foaming property
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- 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
- C10N2030/64—Environmental friendly compositions
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- 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)
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- Organic Chemistry (AREA)
- Lubricants (AREA)
Abstract
The invention relates to a compound preservative and a preparation method and application thereof. The alcohol amine compound, the benzene azole/thiazole compound and the alkanolamide phosphate ester in the composite preservative are matched with each other, so that the composite preservative has a synergistic effect on corrosion resistance and corrosion resistance of metal materials, and the hydraulic fluid prepared from the composite preservative has strong flame resistance, is environment-friendly, has good metal corrosion resistance, particularly good aluminum corrosion resistance, and has an important application value in the fields of door closers and the like.
Description
Technical Field
The invention belongs to the technical field of metal corrosion and protection, relates to a composite preservative, and a preparation method and application thereof, and particularly relates to a composite preservative, a preparation method thereof, and application thereof in preparation of hydraulic fluid.
Background
The door closer is a hydraulic press similar to a spring on the door head, can be released after being compressed after the door is opened, automatically closes the door, and ensures that the door is accurately and timely closed to an initial position after being opened. The hydraulic door closer (door closer for short) is different from the traditional door closer, and achieves the buffering effect by throttling the liquid in the door closer.
Because most of the existing door closers are made of cast aluminum, higher requirements are also put forward on the corrosion resistance. According to the working characteristics of the existing door closer, in certain specific working environments, the change of kinematic viscosity of oil is required to be reduced, excellent fluidity is kept, the door is opened and closed stably and continuously, and the oil is required to have excellent viscosity-temperature performance, high-temperature performance, low-temperature performance and oxidation resistance. In addition, door closer oil is also required to be odorless, pollution-free, and environmentally friendly.
The door closer hydraulic fluid widely used at present is an oil product, has defects in the aspects of protection, fire resistance, freezing prevention and environmental protection of the door closer, and is high in cost and poor in environmental friendliness. For example, CN106867631 discloses a composition suitable for a door closer, which improves the viscosity index, but the patent uses a sulfur-containing gear oil complexing agent, and the odor is difficult to remove. CN102812114A can have a certain biodegradation performance by selecting special base oil, but the viscosity-temperature performance is poor. CN1952091 discloses a hydraulic oil composition suitable for a door closer, which cannot meet the requirement of flame resistance. CN112430493A discloses a degradable door closer oil composition with flame retardant effect, which selects polyol ester as base oil, has certain low temperature and flame retardant properties, but has disadvantages in flame resistance and environmental friendliness, and has higher cost. CN112159703A proposes an environment-friendly water-soluble door closer lubricant and a preparation method thereof, which are similar to a traditional water-glycol hydraulic liquid and need to be improved in aluminum protection and lubrication.
The existing door closer mostly adopts common hydraulic oil, and only uses the anti-flaming door closer oil at the place with fire-proof requirement, but the anti-flaming performance is insufficient, and the viscosity-temperature performance and the low-temperature performance are all adjusted by additives. This product, in case of additive failure, affects the working effect of the door closer. The door closer is made of aluminum, the requirement on corrosion resistance and rust resistance is higher, the existing water-based hydraulic fluid is mostly used in industries such as steel, metallurgy and die casting, and the materials for corrosion resistance and rust resistance are mostly copper and iron.
Therefore, how to develop a hydraulic fluid which has strong flame resistance, good lubricity, environmental friendliness and good metal corrosion resistance (especially aluminum corrosion resistance) becomes a problem which needs to be solved urgently at present in the field.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a compound preservative and a preparation method and application thereof, and particularly provides a compound preservative and a preparation method and application thereof in preparation of hydraulic fluid.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the present invention provides a composite preservative comprising an alcohol amine compound, a benzoxazole/thiazole compound and an alkanolamide phosphate ester.
The invention creatively combines the alcamines compounds, the benzene azole/thiazoles compounds and the alkanolamide phosphate ester to form the compound preservative. The alcohol amine compound, the benzene azole/thiazole compound and the alkanolamide phosphate ester in the composite preservative are matched with each other, so that the composite preservative has a synergistic effect on corrosion resistance and corrosion resistance of metal materials, and hydraulic fluid prepared from the composite preservative has strong flame resistance, is environment-friendly, has good metal corrosion resistance, particularly has good aluminum corrosion resistance, and has an important application value in the fields of door closers and the like.
Preferably, the compound preservative comprises 20-60 parts of alcohol amine compounds, 2-5 parts of benzoxazole/thiazole compounds and 30-100 parts of alkanolamide phosphate ester by weight;
specific numerical values among the above 20 to 60 parts may be 20 parts, 22 parts, 25 parts, 27 parts, 30 parts, 32 parts, 35 parts, 37 parts, 40 parts, 42 parts, 45 parts, 47 parts, 50 parts, 52 parts, 55 parts, 57 parts, 60 parts and the like.
Specific values in the above 2 to 5 parts may be 2 parts, 2.2 parts, 2.5 parts, 2.7 parts, 3.0 parts, 3.2 parts, 3.5 parts, 3.7 parts, 4 parts, 4.2 parts, 4.5 parts, 4.7 parts, 5 parts and the like.
Specific numerical values among the above 30 to 100 parts may be 30 parts, 32 parts, 35 parts, 37 parts, 40 parts, 42 parts, 45 parts, 47 parts, 50 parts, 52 parts, 55 parts, 57 parts, 60 parts, 62 parts, 65 parts, 67 parts, 70 parts, 72 parts, 75 parts, 77 parts, 80 parts, 82 parts, 85 parts, 87 parts, 90 parts, 92 parts, 95 parts, 97 parts, 100 parts and the like.
Preferably, the alkanolamine compound comprises any one of monoethanolamine, diethanolamine, monoisopropanolamine or diglycolamine or a combination of at least two such as diethanolamine and monoisopropanolamine, diethanolamine and diglycolamine, monoethanolamine and diethanolamine and the like, preferably monoethanolamine, diethanolamine, monoisopropanolamine and diglycolamine.
Compared with other choices, when the combination of monoethanolamine, diethanolamine, monoisopropanolamine and diglycolamine is adopted, the prepared composite preservative has the best corrosion resistance and corrosion resistance effects on metal materials.
Preferably, the benzoxazole/thiazole compound comprises any one or combination of at least two of benzotriazole, alkylated benzotriazole (such as methylbenzotriazole and the like), N- [ (5-methyl-1H-benzotriazole-1-yl) methyl ] diethanolamine or mercaptothiadiazole sodium salt (such as 2,5-dimercaptothiadiazole disodium salt and the like), the combination of at least two of benzotriazole and methylbenzotriazole, the combination of benzotriazole and 2,5-dimercaptothiadiazole disodium salt, the combination of N- [ (5-methyl-1H-benzotriazole-1-yl) methyl ] diethanolamine and benzotriazole and the like, and any other combination can be adopted.
The alkanolamide phosphate is synthesized by phosphating the alkanolamide, the metal corrosion resistance of the alkanolamide phosphate is further improved compared with that of the alkanolamide, and the water solubility and the wear resistance of the additive are also improved.
Preferably, the preparation raw materials of the alkanolamide phosphate comprise an organic acid compound, an alkanolamide compound and phosphorus pentoxide.
Preferably, the organic acid-based compound includes a C18-C24 dimer acid, such as a C18 dimer acid, a C19 dimer acid, a C20 dimer acid, a C21 dimer acid, a C22 dimer acid, a C23 dimer acid, a C24 dimer acid, and preferably a heneicosa dimer acid.
The C18-C24 dimer acid is a dimer with 18-24 carbon atoms formed by polymerization reaction of two unsaturated fatty acids, has dicarboxyl, has very good antiseptic and lubricating properties after amidation, and is an indispensable preparation raw material of the alkanolamide phosphate.
Preferably, the organic acid compound further includes any one or a combination of at least two of C8-C10 (C8, C9, C10) saturated monobasic fatty acids, C10-C14 (C10, C11, C12, C13, C14) saturated dibasic fatty acids, or C12-C18 (C12, C13, C14, C15, C16, C17, C18) unsaturated fatty acids, such as a combination of C8-C10 saturated monobasic fatty acids and C10-C14 saturated dibasic fatty acids, a combination of C10-C14 saturated dibasic fatty acids and C12-C18 unsaturated fatty acids, a combination of C8-C10 saturated monobasic fatty acids and C12-C18 unsaturated fatty acids, and the like, and any combination can be selected, and is not repeated herein.
Preferably, the C8-C10 saturated monobasic fatty acid comprises caprylic acid and/or capric acid.
Preferably, the C10-C14 saturated dibasic fatty acid comprises sebacic acid and/or dodecanedioic acid.
Preferably, the C12-C18 unsaturated fatty acid comprises oleic acid.
Preferably, the alkanolamide phosphate is prepared by a preparation method comprising the following steps:
(1) Mixing an organic acid compound and an alkanolamine compound, and carrying out amidation reaction to generate alkanolamide;
(2) Adding phosphorus pentoxide into the alkanolamide, and reacting to generate the alkanolamide phosphate.
Preferably, the reaction temperature of the step (1) is 120-180 ℃, and the reaction time is 1.5-2.5h.
Preferably, the reaction temperature of the step (2) is 80-100 ℃, and the reaction time is 1.5-2.5h.
The specific value of 120-180 deg.C is 120 deg.C, 125 deg.C, 130 deg.C, 135 deg.C, 140 deg.C, 145 deg.C, 150 deg.C, 155 deg.C, 160 deg.C, 165 deg.C, 170 deg.C, 175 deg.C, 180 deg.C, etc.
The specific value of 80-100 deg.C is, for example, 80 deg.C, 81 deg.C, 82 deg.C, 83 deg.C, 84 deg.C, 85 deg.C, 86 deg.C, 87 deg.C, 88 deg.C, 89 deg.C, 90 deg.C, 91 deg.C, 92 deg.C, 93 deg.C, 94 deg.C, 95 deg.C, 96 deg.C, 97 deg.C, 98 deg.C, 99 deg.C, 100 deg.C, etc.
Specific values of the above 1.5 to 2.5h are, for example, 1.5h, 1.6h, 1.7h, 1.8h, 1.9h, 2.0h, 2.1h, 2.2h, 2.3h, 2.4h, 2.5h, etc.
In a second aspect, the present invention provides a method for preparing the compound preservative according to the first aspect, wherein the method for preparing the compound preservative comprises mixing alkanolamide phosphate, the alkanolamide compound and the benzoxazole/thiazole compound at 60-100 ℃.
The above-mentioned specific values at 60-100 ℃ are, for example, 60 ℃, 61 ℃, 62 ℃, 63 ℃, 64 ℃, 65 ℃, 66 ℃, 67 ℃, 68 ℃, 69 ℃, 70 ℃, 71 ℃, 72 ℃, 73 ℃, 74 ℃, 75 ℃, 76 ℃, 77 ℃, 78 ℃, 79 ℃,80 ℃, 81 ℃, 82 ℃, 83 ℃, 84 ℃, 85 ℃, 86 ℃, 87 ℃, 88 ℃, 89 ℃,90 ℃, 91 ℃, 92 ℃, 93 ℃, 94 ℃, 95 ℃, 96 ℃, 97 ℃, 98 ℃, 99 ℃,100 ℃ and the like.
As a preferred technical scheme of the invention, the preparation method of the compound preservative comprises the following steps:
(1) Mixing 15-20 parts by weight of C8-C10 saturated monobasic fatty acid, 8-12 parts by weight of C10-C14 saturated dibasic fatty acid, 8-12 parts by weight of C12-C18 unsaturated fatty acid, 8-12 parts by weight of C18-C24 dimer acid and 10-50 parts by weight of alcohol amine compound, and reacting at 120-180 ℃ for 1.5-2.5h to obtain the alkanolamide.
(2) Adding phosphorus pentoxide with the same molar quantity as the alkanolamide into the reaction system, and reacting for 1.5-2.5h at the temperature of 80-100 ℃ to obtain the alkanolamide phosphate.
(3) Mixing alkanolamide phosphate, 2-5 parts by weight of benzene azole/thiazole compounds and 10-50 parts by weight of alcohol amine compounds at 60-100 ℃ to obtain the composition.
In a third aspect, the present invention provides the use of a compound preservative according to the first aspect or a method of preparing a compound preservative according to the second aspect for the preparation of a hydraulic fluid.
In a fourth aspect, the present invention provides a hydraulic fluid, wherein the raw materials for preparing the hydraulic fluid comprise the compound preservative and the additive according to the first aspect.
Preferably, the additive includes any one or a combination of at least two of water, a diol, a lubricant, a tackifier, a defoamer, or a coloring agent, where the combination of at least two of the above materials, for example, the combination of a diol and a lubricant, the combination of a tackifier and a defoamer, the combination of a defoamer and a coloring agent, and the like, and any other combination may be used, which is not described in detail herein.
Preferably, the hydraulic fluid is prepared from 3-5 parts by weight of compound preservative, 30-60 parts by weight of water, 40-60 parts by weight of dihydric alcohol, 0.5-3.5 parts by weight of lubricant, 6-14 parts by weight of tackifier, 0.001-0.01 part by weight of defoaming agent and 0.001-0.01 part by weight of coloring agent.
Specific examples of the above-mentioned 3 to 5 parts include 3 parts, 3.2 parts, 3.4 parts, 3.6 parts, 3.8 parts, 4 parts, 4.2 parts, 4.4 parts, 4.6 parts, 4.8 parts, 5 parts and the like.
Specific examples of the above-mentioned 30 to 60 parts include 30 parts, 32 parts, 35 parts, 37 parts, 40 parts, 42 parts, 45 parts, 47 parts, 50 parts, 52 parts, 55 parts, 57 parts, 60 parts and the like.
Specific examples of the above-mentioned 40 to 60 parts include 40 parts, 44 parts, 46 parts, 48 parts, 50 parts, 52 parts, 54 parts, 56 parts, 58 parts and 60 parts.
Specific examples of the above-mentioned 0.5 to 3.5 parts include 0.5 part, 1 part, 1.5 parts, 2 parts, 2.5 parts, 3 parts, 3.5 parts and the like.
Specific examples of the above-mentioned 6 to 14 parts include 6 parts, 7 parts, 8 parts, 9 parts, 10 parts, 11 parts, 12 parts, 13 parts and 14 parts.
Specific examples of the above-mentioned 0.001 to 0.01 parts include 0.001 part, 0.002 part, 0.003 part, 0.004 part, 0.005 part, 0.006 part, 0.007 part, 0.008 part, 0.009 part, 0.01 part and the like.
Preferably, the diol includes any one of ethylene glycol, diethylene glycol, or propylene glycol or a combination of at least two thereof, such as a combination of ethylene glycol and diethylene glycol, a combination of diethylene glycol and propylene glycol, a combination of ethylene glycol and propylene glycol, and the like, in any combination.
The dihydric alcohol used in the invention is selected from any one or the combination of at least two of ethylene glycol, diethylene glycol or propylene glycol, thus effectively improving the antifreezing property of the hydraulic fluid product and meeting the requirement of the invention on low pour point of the hydraulic fluid.
Preferably, the lubricant comprises aqueous graphene.
According to the invention, the water-based graphene is selected as the lubricant, so that the lubricity of the product is obviously provided, the use amount of sulfur and phosphorus elements is reduced, the corrosion to metal is reduced, and the environment is protected.
Preferably, the tackifier comprises an ethylene oxide propylene oxide copolymer.
The ethylene oxide-propylene oxide copolymer is selected as the tackifier, the viscosity of the ethylene oxide-propylene oxide copolymer is 40000-50000, the viscosity index is higher, the tackifying effect is good, the viscosity index of the prepared hydraulic fluid product reaches more than 230, and the shearing resistance is strong.
Preferably, the defoamer comprises a polyether compound.
The invention uses the polyether defoamer, and improves the stability of the product by utilizing the property that the polyether can be mutually dissolved with water in any proportion.
In a fifth aspect, the present invention provides a method for preparing the hydraulic fluid according to the fourth aspect, wherein the method for preparing the hydraulic fluid comprises mixing the compound preservative and the additive, stirring and filtering.
Preferably, the method for preparing the hydraulic fluid comprises the following steps:
(1) Mixing dihydric alcohol and water, and stirring to obtain a first mixture;
(2) Mixing the compound preservative and the lubricant with the first mixture, and stirring to obtain a second mixture;
(3) Mixing the tackifier, the defoamer, the coloring agent and the second mixture, stirring and filtering to obtain the water-based paint.
In a sixth aspect, the present invention provides the use of a hydraulic fluid according to the fourth aspect or a method of producing a hydraulic fluid according to the fifth aspect in a door closer.
The recitation of numerical ranges herein includes not only the above-recited values, but also any values between any of the above-recited numerical ranges not recited, and for brevity and clarity, is not intended to be exhaustive of the specific values encompassed within the range.
Compared with the prior art, the invention has the following beneficial effects:
the invention creatively combines the alcamines compound, the benzene azole/thiazole compound and the alkanolamide phosphate to form the compound preservative. The alcohol amine compound, the benzene azole/thiazole compound and the alkanolamide phosphate ester in the composite preservative are matched with each other, and the composite preservative has a synergistic effect on the corrosion resistance and the corrosion prevention of metal materials. Particularly, the alkanolamide phosphate is synthesized by phosphating the alkanolamide, the metal corrosion resistance of the alkanolamide phosphate is further improved compared with that of the alkanolamide, and the water solubility and the wear resistance of the additive are also improved. The alcohol amine compound is preferably a combination of monoethanolamine, diethanolamine, monoisopropanolamine and diglycolamine, and compared with other choices, the composite preservative prepared by adopting the combination has the best corrosion resistance and corrosion resistance effects on metal materials. In addition, when the hydraulic fluid is prepared, the dihydric alcohol used in the invention is selected from any one or the combination of at least two of ethylene glycol, diethylene glycol or propylene glycol, so that the antifreezing property of the hydraulic fluid product is effectively improved, and the requirement of the invention on low pour point of the hydraulic fluid is met. The ethylene oxide-propylene oxide copolymer is selected as the tackifier, the viscosity of the ethylene oxide-propylene oxide copolymer is 40000-50000, the viscosity index is higher, the tackifying effect is good, the viscosity index of the prepared hydraulic fluid product reaches more than 230, and the shearing resistance is strong. The invention uses the polyether defoamer, and improves the stability of the product by utilizing the property that the polyether can be mutually dissolved with water in any proportion. According to the invention, the water-based graphene is selected as the lubricant, so that the lubricity of the product is obviously provided, the use amount of sulfur and phosphorus elements is reduced, the corrosion to metal is reduced, and the environment is protected. The hydraulic fluid prepared by the invention has the advantages of strong flame resistance, strong freezing resistance, strong viscosity stability, good high and low temperature stability, strong shearing resistance, environment friendliness, good metal corrosion resistance, particularly good aluminum corrosion resistance, meets the requirements of door closers on fireproof doors and anti-freezing doors on the comprehensive performance of the hydraulic fluid, and has important application value.
Detailed Description
To further illustrate the technical means and effects of the present invention, the following further describes the technical solution of the present invention with reference to the preferred embodiments of the present invention, but the present invention is not limited to the scope of the embodiments.
The following examples, comparative examples, application examples and comparative application examples relate to the following raw material information:
heneicosan (leid spinning ltd, su 1550); aqueous graphene (Ningbo materials technical research institute, protein-modified graphene); ethylene oxide propylene oxide copolymer (south kyo well, SDN 45); coloring agent (Shanghai Zijiang International trade Co., ltd., acid Red B).
Example 1
This example provides a composite preservative comprising alkanolamide phosphate, benzotriazole, monoethanolamine, diethanolamine, monoisopropanolamine, and diglycolamine.
The preparation method comprises the following steps:
(1) Mixing 17 parts of caprylic acid, 10 parts of n-dodecanedioic acid, 10 parts of oleic acid, 10 parts of heneicosanedioic acid, 6 parts of monoethanolamine, 8 parts of diethanolamine, 5 parts of monoisopropanolamine and 4 parts of diglycolamine, and reacting at 150 ℃ for 100min to obtain alkanolamide.
(2) Adding phosphorus pentoxide with the same molar quantity as the alkanolamide into the reaction system, and reacting for 2h at 90 ℃ to obtain the alkanolamide phosphate.
(3) Mixing alkanolamide phosphate, 6 parts of monoethanolamine, 4 parts of diethanolamine, 5 parts of monoisopropanolamine, 6 parts of diglycolamine and 3 parts of benzotriazole at 90 ℃, and cooling to room temperature (25 ℃) to obtain the composition.
Example 2
This example provides a combination preservative comprising alkanolamide phosphate, 2,5-dimercaptothiadiazole disodium salt, monoethanolamine, diethanolamine, monoisopropanolamine, and diglycolamine.
The preparation method comprises the following steps:
(1) Mixing 20 parts of sebacic acid, 15 parts of oleic acid, 12 parts of heneicosane dimer acid, 10 parts of diethanolamine, 10 parts of monoisopropanolamine and 5 parts of diglycolamine, and reacting at 120 ℃ for 120min to obtain alkanolamide.
(2) Adding phosphorus pentoxide with the same molar quantity as the alkanolamide into the reaction system, and reacting for 2.5h at 60 ℃ to obtain the alkanolamide phosphate.
(3) Mixing alkanolamide phosphate, 5 parts of diethanolamine, 5 parts of monoisopropanolamine, 10 parts of diglycolamine and 5 parts of 2,5-dimercaptothiadiazole disodium salt at 60 ℃, and cooling to room temperature (25 ℃) to obtain the compound.
Example 3
This example provides a composite preservative comprising alkanolamide phosphate, methylbenzotriazole, monoethanolamine, diethanolamine, monoisopropanolamine, and diglycolamine.
The preparation method comprises the following steps:
(1) Mixing 18 parts of capric acid, 18 parts of oleic acid, 8 parts of heneicosane dimer acid, 10 parts of monoethanolamine, 8 parts of monoisopropanolamine and 5 parts of diglycolamine, and reacting at 180 ℃ for 90min to obtain alkanolamide.
(2) Adding phosphorus pentoxide with the same molar quantity as the alkanolamide into the reaction system, and reacting for 1.5h at 100 ℃ to obtain the alkanolamide phosphate.
(3) Mixing alkanolamide phosphate, 8 parts of monoethanolamine, 4 parts of monoisopropanolamine, 10 parts of diglycolamine and 3 parts of methylbenzotriazole at 100 ℃, and cooling to room temperature (25 ℃) to obtain the composite.
Example 4
This example provides a compound preservative that differs from example 1 only in replacing "monoethanolamine, diethanolamine, monoisopropanolamine and diglycolamine" with equal amounts of "monoisopropanolamine and diglycolamine".
The preparation method differs from example 1 only in that the alkanolamine compound "6 parts of monoethanolamine, 4 parts of diethanolamine, 5 parts of monoisopropanolamine, 6 parts of diglycolamine" in step (3) is replaced by "10 parts of monoisopropanolamine and 11 parts of diglycolamine", and the other conditions refer to example 1.
Example 5
This example provides a combination preservative which differs from example 1 only in that "monoethanolamine, diethanolamine, monoisopropanolamine and diglycolamine" is replaced with an equal amount of "monoethanolamine and diethanolamine".
The preparation method differs from example 1 only in that the alkanolamine compound "6 parts of monoethanolamine, 4 parts of diethanolamine, 5 parts of monoisopropanolamine, 6 parts of diglycolamine" in step (3) is replaced by "12 parts of monoethanolamine and 9 parts of diethanolamine", and the other conditions refer to example 1.
Comparative example 1
This comparative example provides a composite preservative that differs from example 1 only in that "alkanolamide phosphate" is replaced with "alkanolamide".
The preparation method comprises the following steps:
(1) Mixing 17 parts of caprylic acid, 10 parts of n-dodecanedioic acid, 10 parts of oleic acid, 10 parts of heneicosanedioic acid, 6 parts of monoethanolamine, 8 parts of diethanolamine, 5 parts of monoisopropanolamine and 4 parts of diglycolamine, and reacting at 150 ℃ for 100min to obtain alkanolamide.
(2) Mixing alkanolamide, 6 parts of monoethanolamine, 4 parts of diethanolamine, 5 parts of monoisopropanolamine, 6 parts of diglycolamine and 3 parts of benzotriazole at 90 ℃, and cooling to room temperature (25 ℃ C.) to obtain the composition.
Comparative example 2
This comparative example provides a compound preservative that differs from example 1 only in the absence of alkanolamide phosphate esters.
The preparation method comprises the following steps:
and mixing 6 parts of monoethanolamine, 4 parts of diethanolamine, 5 parts of monoisopropanolamine, 6 parts of diglycolamine and 3 parts of benzotriazole at 90 ℃, and cooling to room temperature (25 ℃) to obtain the composition.
Comparative example 3
The comparative example provides a composite preservative which is different from the preservative in example 1 only in that benzotriazole is absent, and other components and contents are unchanged.
The preparation process is as in example 1.
Comparative example 4
This comparative example provides a compound preservative that differs from example 1 only in the absence of the alkanolamine compound, i.e., the absence of monoethanolamine, diethanolamine, monoisopropanolamine and diglycolamine.
The preparation method comprises the following steps:
(1) Mixing 17 parts of caprylic acid, 10 parts of n-dodecanedioic acid, 10 parts of oleic acid, 10 parts of heneicosanedioic acid, 6 parts of monoethanolamine, 8 parts of diethanolamine, 5 parts of monoisopropanolamine and 4 parts of diglycolamine, and reacting at 150 ℃ for 100min to obtain alkanolamide.
(2) Adding phosphorus pentoxide with the same molar weight as the alkanolamide into the reaction system, and reacting for 2 hours at 90 ℃ to obtain the alkanolamide phosphate.
(3) Mixing alkanolamide phosphate with 3 parts of benzotriazole at 90 ℃, and cooling to room temperature (25 ℃) to obtain the composition.
Comparative example 5
This comparative example provides a preservative, namely an alkanolamide phosphate, prepared as follows:
(1) Mixing 17 parts of caprylic acid, 10 parts of n-dodecanedioic acid, 10 parts of oleic acid, 10 parts of heneicosanedioic acid, 6 parts of monoethanolamine, 8 parts of diethanolamine, 5 parts of monoisopropanolamine and 4 parts of diglycolamine, and reacting at 150 ℃ for 100min to obtain alkanolamide.
(2) Adding phosphorus pentoxide with the same molar quantity as the alkanolamide into the reaction system, and reacting for 2h at 90 ℃ to obtain the alkanolamide phosphate.
Comparative example 6
This comparative example provides a preservative, benzotriazole.
Comparative example 7
This comparative example provides a preservative comprising monoethanolamine, diethanolamine, monoisopropanolamine, and diglycolamine.
The preparation method comprises the following steps: and 6 parts of monoethanolamine, 4 parts of diethanolamine, 5 parts of monoisopropanolamine and 6 parts of diglycolamine are uniformly mixed to obtain the composite stabilizer.
Comparative example 8
The present comparative example provides a preservative prepared as follows:
adding 0.05 part by weight of non-ferrous metal antirust agent (ASI-80) into 10 parts by weight of water, stirring uniformly, adding 1 part by weight of monoisopropanolamine and 5 parts by weight of diglycolamine at 50 ℃, and stirring for 1h. Then adding 0.2 weight part of methylbenzotriazole, stirring for 1h, then adding 1 weight part of caprylic acid, 3 weight parts of capric acid and 1 weight part of dicarboxylic acid (DIACID 1550), and stirring for 1h to obtain the compound.
Application example 1
The application example provides a hydraulic fluid, and the preparation raw materials of the hydraulic fluid comprise, by weight, 3 parts of the composite preservative in example 1, 40 parts of water, 50 parts of ethylene glycol, 2 parts of aqueous graphene, 10 parts of ethylene oxide-propylene oxide copolymer, 0.005 part of polyether and 0.003 part of a coloring agent.
The preparation method comprises the following steps:
(1) Adding ethylene glycol into deionized water, stirring (60 r/min, 30min, 25 deg.C) to obtain a first mixture;
(2) Sequentially adding the composite preservative and the aqueous graphene into the first mixture, and stirring (60 r/min, 30min and 25 ℃) at the same time to obtain a second mixture;
(3) And sequentially adding the ethylene oxide propylene oxide copolymer, the polyether and the coloring agent into the second mixture, stirring (60 r/min, 30min and 25 ℃), and filtering to obtain the composite pigment.
Application example 2
The application example provides a hydraulic fluid, and the preparation raw materials of the hydraulic fluid comprise, by weight, 3 parts of the composite preservative in example 2, 30 parts of water, 40 parts of propylene glycol, 1 part of aqueous graphene, 6 parts of ethylene oxide-propylene oxide copolymer, 0.002 part of polyether and 0.001 part of a coloring agent.
The preparation method comprises the following steps:
(1) Adding propylene glycol into deionized water, stirring (60 r/min, 30min, 25 deg.C) to obtain a first mixture;
(2) Sequentially adding the composite preservative and the aqueous graphene into the first mixture, and stirring (60 r/min, 30min and 25 ℃) at the same time to obtain a second mixture;
(3) Sequentially adding ethylene oxide propylene oxide copolymer, polyether and coloring agent into the second mixture, stirring (60 r/min, 30min, 25 deg.C), and filtering.
Application example 3
The application example provides a hydraulic fluid, and the preparation raw materials of the hydraulic fluid comprise, by weight, 3 parts of the composite preservative in example 3, 60 parts of water, 55 parts of diethylene glycol, 3 parts of aqueous graphene, 13 parts of ethylene oxide-propylene oxide copolymer, 0.008 part of polyether and 0.01 part of a coloring agent.
The preparation method comprises the following steps:
(1) Adding diethylene glycol into deionized water, stirring (60 r/min, 30min, 25 ℃) to obtain a first mixture;
(2) Sequentially adding the composite preservative and the aqueous graphene into the first mixture, and stirring (60 r/min, 30min and 25 ℃) at the same time to obtain a second mixture;
(3) Sequentially adding ethylene oxide propylene oxide copolymer, polyether and coloring agent into the second mixture, stirring (60 r/min, 30min, 25 deg.C), and filtering.
Application examples 4 to 5
Application examples 4 to 5 provide two hydraulic fluids, the preparation raw materials of which differ from those of application example 1 only in that the composite corrosion inhibitor of example 1 was replaced with the same amount of the composite corrosion inhibitor of examples 4 to 5, respectively, and the other components and contents were not changed.
The preparation method thereof is referred to application example 1.
Comparative application examples 1 to 8
Comparative application examples 1 to 8 provide eight hydraulic fluids whose starting materials for preparation differ from application example 1 only in that the composite corrosion inhibitor of example 1 was replaced with the same amount of the corrosion inhibitor of comparative examples 1 to 8, respectively, and the other components and contents were not changed.
The preparation process is as in application example 1.
Test example 1
And (3) testing the corrosion resistance:
the corrosion resistance of the hydraulic fluid provided by the application examples 1-5 and the comparative application examples 1-8 to aluminum was tested, and the test method is as follows:
adopting an LY12 aluminum test piece with the size of 25 multiplied by 50 multiplied by 3mm, polishing and cleaning according to the method of SH/T0218, half-immersing into a tested liquid (hydraulic liquid), covering a glass cover, placing in a constant-temperature oven with the temperature of 55 +/-2 ℃, regularly observing the corrosion condition of the aluminum sheet, and recording the corrosion time of the aluminum sheet.
TABLE 1
The results show that: the aluminum corrosion prevention time of the hydraulic fluid provided by application examples 1-5 is longer, which shows that the composite corrosion inhibitor provided by the invention has excellent metal corrosion prevention performance, wherein the hydraulic fluid provided by application examples 4 and 5 has poorer corrosion prevention performance compared with the hydraulic fluid of application example 1, which shows that the specific selection of the alcohol amine compound in the composite corrosion inhibitor has a certain influence on the corrosion prevention effect, and compared with other selections, the corrosion prevention performance of the prepared hydraulic fluid is optimal when the preferable combination of the invention, namely the combination of monoethanolamine, diethanolamine, monoisopropanolamine and diglycolamine is adopted. The hydraulic fluid of comparative application example 1 has poorer corrosion prevention performance than that of application example 1, which shows that the hydraulic fluid prepared by using the alkanolamide phosphate has more excellent corrosion prevention performance than that of the alkanolamide. Compared with the hydraulic fluid of application example 1, the hydraulic fluid of application examples 2 to 7 has poorer corrosion prevention performance, which shows that the three components of the alcohol amine compound, the benzene azole/thiazole compound and the alkanolamide phosphate ester in the composite corrosion inhibitor are matched with each other, so that the corrosion prevention effect on the metal material is more excellent than that of any single component or the combination of any two components, and the synergistic effect of the three components is proved. The hydraulic fluid of comparative application example 8 is slightly less corrosion-resistant than the hydraulic fluid of application example 1, indicating that: compared with the prior art, the composite preservative provided by the invention has better metal corrosion resistance.
Test example 2
Comprehensive performance test of hydraulic fluid:
the comprehensive performance of the hydraulic fluid provided by the application example 1 and the hydraulic fluid and hydraulic oil in the prior art is tested, and specific test items and results are shown in table 2.
TABLE 2
The results show that: the hydraulic fluid provided by the invention has good performance in various test indexes and excellent comprehensive performance, and particularly, compared with the hydraulic fluid in the prior art, the hydraulic fluid provided by the invention has better flame retardancy, has more excellent corrosion performance on copper and aluminum, and is also better than the prior art in viscosity, pour point, shear stability and the like.
In conclusion, the invention creatively combines the alcamines, the benzene thiazole/thiazoles and the alkanolamide phosphate to form the compound preservative. The alcohol amine compound, the benzene azole/thiazole compound and the alkanolamide phosphate ester in the composite preservative are matched with each other, and the composite preservative has a synergistic effect on the corrosion resistance and the corrosion prevention of metal materials. Particularly, the alkanolamide phosphate is synthesized by phosphating the alkanolamide, the metal corrosion resistance of the alkanolamide phosphate is further improved compared with that of the alkanolamide, and the water solubility and the wear resistance of the additive are also improved. The alcohol amine compound is preferably a combination of monoethanolamine, diethanolamine, monoisopropanolamine and diglycolamine, and compared with other choices, the composite preservative prepared by adopting the combination has the best corrosion resistance and corrosion resistance effects on metal materials. In addition, when the hydraulic fluid is prepared, the dihydric alcohol used in the invention is selected from any one or the combination of at least two of ethylene glycol, diethylene glycol or propylene glycol, so that the antifreezing property of the hydraulic fluid product is effectively improved, and the requirement of the invention on low pour point of the hydraulic fluid is met. The ethylene oxide-propylene oxide copolymer is selected as the tackifier, the viscosity of the ethylene oxide-propylene oxide copolymer is 40000-50000, the viscosity index is higher, the tackifying effect is good, the viscosity index of the prepared hydraulic fluid product reaches more than 230, and the shearing resistance is strong. The invention uses the polyether defoamer, and improves the stability of the product by utilizing the property that the polyether can be mutually dissolved with water in any proportion. According to the invention, the water-based graphene is selected as the lubricant, so that the lubricating property of the product is obviously provided, the use amount of sulfur and phosphorus elements is reduced, the corrosion to metal is reduced, and the environment is more protected. The hydraulic fluid prepared by the invention has the advantages of strong flame resistance, strong freezing resistance, strong viscosity stability, good high and low temperature stability, strong shearing resistance, environment friendliness, good metal corrosion resistance, particularly good aluminum corrosion resistance, meets the requirements of door closers on fireproof doors and anti-freezing doors on the comprehensive performance of the hydraulic fluid, and has important application value.
The applicant states that the composite preservative, the preparation method and the application thereof are described by the above examples and application examples, but the invention is not limited to the above examples and application examples, that is, the invention is not limited to the above examples and application examples. It should be understood by those skilled in the art that any modification of the present invention, equivalent substitutions of the raw materials of the product of the present invention, addition of auxiliary components, selection of specific modes, etc., are within the scope and disclosure of the present invention.
The preferred embodiments of the present invention have been described in detail, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.
Claims (14)
1. The compound preservative is characterized by comprising 20-60 parts of alcohol amine compounds, 2-5 parts of benzoxazole/thiazole compounds and 30-100 parts of alkanolamide phosphate ester in parts by weight;
the alcamines compounds are the combination of monoethanolamine, diethanolamine, monoisopropanolamine and diglycolamine.
2. The compound preservative of claim 1, wherein the benzoxazole/thiazole compounds comprise one or a combination of at least two of benzotriazole, alkylated benzotriazole, N- [ (5-methyl-1H-benzotriazol-1-yl) methyl ] diethanolamine, or sodium mercaptothiadiazole.
3. The method for preparing a composite preservative according to claim 1 or 2, wherein the method for preparing the composite preservative comprises mixing the alkanolamide phosphate, the alkanolamide compound and the benzoxazole/thiazole compound at 60-100 ℃.
4. Use of a composite preservative according to claim 1 or 2 or a method of making a composite preservative according to claim 3 in the preparation of a hydraulic fluid.
5. A hydraulic fluid, characterized in that the raw materials for the preparation of the hydraulic fluid comprise the compound preservative and additive according to claim 1 or 2.
6. The hydraulic fluid of claim 5, wherein the additive comprises any one of water, glycol, a lubricant, a viscosifier, an anti-foaming agent, or a coloring agent, or a combination of at least two thereof.
7. The hydraulic fluid as claimed in claim 5, wherein the hydraulic fluid is prepared from raw materials including, by weight, 3-5 parts of a compound preservative, 30-60 parts of water, 40-60 parts of glycol, 0.5-3.5 parts of a lubricant, 6-14 parts of a tackifier, 0.001-0.01 part of an antifoaming agent, and 0.001-0.01 part of a coloring agent.
8. A hydraulic fluid as claimed in claim 6, wherein said glycol comprises any one of ethylene glycol, diethylene glycol or propylene glycol or a combination of at least two thereof.
9. The hydraulic fluid of claim 6, wherein the lubricant comprises aqueous graphene.
10. The hydraulic fluid of claim 6, wherein the viscosifier comprises an ethylene oxide propylene oxide copolymer.
11. The hydraulic fluid of claim 6, wherein said anti-foaming agent comprises a polyether compound.
12. A method for the production of a hydraulic fluid according to any one of claims 5 to 11, characterized in that the method for the production of a hydraulic fluid comprises mixing the compound preservative with the additive, stirring, and filtering.
13. The method for preparing a hydraulic fluid according to claim 12, comprising the steps of:
(1) Mixing dihydric alcohol and water, and stirring to obtain a first mixture;
(2) Mixing the compound preservative and the lubricant with the first mixture, and stirring to obtain a second mixture;
(3) Mixing the tackifier, the defoaming agent and the coloring agent with the second mixture, stirring and filtering to obtain the water-based paint.
14. Use of a hydraulic fluid according to any one of claims 5 to 11 or of a method for the production of a hydraulic fluid according to claim 12 or 13 in a door closer.
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| US4209414A (en) * | 1978-03-13 | 1980-06-24 | E. F. Houghton And Co. | Dual-purpose hydraulic fluid |
| DE502004006426D1 (en) * | 2004-10-19 | 2008-04-17 | Helmut Theunissen | Corrosion inhibitor for functional fluids, water-miscible concentrate and its use |
| WO2015031052A2 (en) * | 2013-08-31 | 2015-03-05 | Houghton Technical Corp. | Hydraulic fluid compositions |
| CN104531323B (en) * | 2014-12-30 | 2017-02-22 | 奎克化学（中国）有限公司 | Nitrite-free concentrated solution for rapidly biodegrading mine prop and preparation method |
| CN110205193B (en) * | 2018-02-28 | 2022-02-01 | 中国石油天然气股份有限公司 | Gas phase corrosion resistant water-glycol flame-retardant hydraulic fluid composition and preparation method thereof |
| CN108517238B (en) * | 2018-04-04 | 2021-04-02 | 中国科学院宁波材料技术与工程研究所 | Protein-modified reduced graphene oxide water lubricating additive, and preparation method and application thereof |
| CN112029561A (en) * | 2020-07-18 | 2020-12-04 | 江苏捷达油品有限公司 | Modified graphene-based water-based flame-retardant hydraulic oil |
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