CN106244304A - Low pour point electric insulation fluid composition and application thereof - Google Patents

Low pour point electric insulation fluid composition and application thereof Download PDF

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Publication number
CN106244304A
CN106244304A CN201610596165.9A CN201610596165A CN106244304A CN 106244304 A CN106244304 A CN 106244304A CN 201610596165 A CN201610596165 A CN 201610596165A CN 106244304 A CN106244304 A CN 106244304A
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China
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pour point
low pour
fluid composition
electric insulation
insulation fluid
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何晓瑛
徐魏
周霞
益梅蓉
巩亚
韩旭燕
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China Petroleum and Chemical Corp
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China Petroleum and Chemical Corp
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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
    • C10M169/04—Mixtures of base-materials and additives
    • C10M169/048—Mixtures of base-materials and additives the additives being a mixture of compounds of unknown or incompletely defined constitution, non-macromolecular and macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/02—Hydroxy compounds
    • C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
    • C10M2207/026—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings with tertiary alkyl groups
    • 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
    • C10M2209/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/08—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate type
    • C10M2209/084—Acrylate; Methacrylate
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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
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
    • C10M2215/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to carbon atoms of six-membered aromatic rings
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
    • C10M2215/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to carbon atoms of six-membered aromatic rings
    • C10M2215/064—Di- and triaryl amines
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/22—Heterocyclic nitrogen compounds
    • C10M2215/223—Five-membered rings containing nitrogen and carbon only
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/02—Sulfur-containing compounds obtained by sulfurisation with sulfur or sulfur-containing compounds
    • C10M2219/022—Sulfur-containing compounds obtained by sulfurisation with sulfur or sulfur-containing compounds of hydrocarbons, e.g. olefines
    • 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
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/04—Phosphate esters
    • C10M2223/047—Thioderivatives not containing metallic elements
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
    • C10M2229/04—Siloxanes with specific structure
    • C10M2229/041—Siloxanes with specific structure containing aliphatic substituents
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/02—Pour-point; Viscosity index
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/08—Resistance to extreme temperature
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/10—Inhibition of oxidation, e.g. anti-oxidants
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • 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
    • 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
    • C10N2040/14—Electric or magnetic purposes
    • C10N2040/16—Dielectric; Insulating oil or insulators

Abstract

The present invention relates to a kind of low pour point electric insulation fluid composition and application thereof, mainly solve the pour point of electric insulating oil in prior art higher, it is impossible to meet the low temperature flow sex chromosome mosaicism required by transformator in environment of extremely trembling with fear.The present invention comprises following component by using in terms of parts by weight: a) 100 parts of low pour point synthetic base oils；B) 0.08～0.4 part of antioxidant；C) 0～0.05 part of metal deactivator；Described low pour point synthetic base oil is characterised by: a1) 100 DEG C time dynamic viscosity be 1.8～4.2 millimeters2/ the second；A2) pour point is less than or equal to 60 DEG C；A3) burning-point is more than or equal to 200 DEG C；A4) flash-point technical scheme more than or equal to 150 DEG C preferably resolves this problem, can be used in the commercial production of low pour point electric insulation fluid composition.

Description

Low pour point electric insulation fluid composition and application thereof
Technical field
The present invention relates to a kind of synthesis low pour point electric insulation fluid composition and application thereof.
Background technology
Electric insulating oil is a kind of in the electrical equipment such as transformator, transformer, and both the insulation as electrical equipment was situated between Matter, again as the heat-conducting medium of conduction electrical equipment heat energy, primarily serves insulation and cooling effect.
In selected areas of China, winter minimum temperature can reach less than-40 DEG C, extreme in Chinese existing meteorological data The lowest temperature is recorded as-52.3 DEG C.Under the conditions of the cold temperature of such pole, outdoor some transformers is needed to use adaptation Extremely tremble with fear the low temperature electric insulating oil of weather.The pour point of the electric insulating oil typically used under less than-40 DEG C of environment requires-60 Below DEG C, in prior art, the pour point of electric insulation oil base oil is the highest (according to GB/T 3535 petroleum products pour point algoscopy Test pour point is more than-60 DEG C), such as document CN104987914A discloses a kind of low pour point mix insulation oil and preparation side thereof Method, this low pour point mix insulation each component of oil and mass percent be: vegetable oil 79～89.5%, mineral insulating oil 10～ 20%, antioxidant 0.5～1%, it is impossible to meet and use under the conditions of pole cold temperature below-40 DEG C.
Summary of the invention
One of the technical problem to be solved is that in prior art, the pour point of electric insulation oil base oil is the highest (according to GB/T 3535 petroleum products pour point algoscopy test pour point more than-60 DEG C), it is impossible to meet below-40 DEG C the coldest Use under temperature condition, it is provided that a kind of new synthesis low pour point electric insulation fluid composition.Said composition has the low temperature of excellence Performance (according to GB/T 3535 petroleum products pour point algoscopy test pour point less than or equal to-60 DEG C), and there is excellent oxidation peace Qualitative and anti-sulfur corrosion.The two of the technical problem to be solved are to provide a kind of relative with solving one of technical problem The purposes of the low pour point electric insulation fluid composition answered.
For solving one of above-mentioned technical problem, the technical solution used in the present invention is as follows: a kind of low pour point electric insulating oil Compositions, comprises following component in terms of parts by weight:
A) 100 parts of low pour point synthetic base oils；
B) 0.08～0.4 part of antioxidant；
C) 0～0.05 part of metal deactivator；
Described low pour point synthetic base oil is characterised by: a1) 100 DEG C time dynamic viscosity be 1.8～4.2 millimeters2/ Second；A2) pour point is less than or equal to-60 DEG C；A3) burning-point is more than or equal to 200 DEG C；A4) flash-point is more than or equal to 150 DEG C；
Described antioxidant selected from 2,6 ditertiary butyl p cresol, 2,6-di-tert-butylphenol, dialkylthiophosphate esters are derivative At least one in thing, phosphorodithioate or dibenzyldisulfide；
Described metal deactivator is selected from N, N-dibutyl aminomethylene-alkylbenzene triazole, N, N-dialkyl amido methylene Base triazole, N, N-diakylaminomethylene-alkylbenzene triazole, benzotriazole, methyl benzotriazole or benzotriazole and aldehyde, amine At least one in condensation substance.
In technique scheme, it is preferable that in terms of parts by weight, the consumption of antioxidant is 0.1～0.4 part, metal deactivating The consumption of agent is 0.001～0.03 part.
In technique scheme, one of described antioxidant preferred version is selected from 2,6 ditertiary butyl p cresol or 2,6-bis- At least one in tert-butyl phenol.
In technique scheme, the two of described antioxidant preferred version are selected from 2,6 ditertiary butyl p cresol or 2,6-bis- At least one in tert-butyl phenol with selected from dialkylthiophosphate esters derivant, phosphorodithioate or dibenzyldisulfide In the mixture of at least one；In mixture, in 2,6 ditertiary butyl p cresol or 2,6-di-tert-butylphenol at least A kind of weight of at least one with in dialkylthiophosphate esters derivant, phosphorodithioate or dibenzyldisulfide Amount ratio is 1: (0.05～0.5).
In technique scheme, it is preferable that described compositions also includes anti-foaming agent；In terms of parts by weight, anti-foaming agent Consumption is 0～0.05 part.
In technique scheme, it is preferable that described anti-foaming agent is selected from methyl-silicone oil, ethyl silicon oil or acrylate with ether altogether At least one in polymers.
The preparation method of the electric insulation fluid composition of the present invention is: by antioxidant, metal deactivator, anti-foaming agent 40～ Add in base oil at a temperature of 80 DEG C, stir 0.5～2 hour so that it is all dissolving i.e. can get the compositions of the present invention.
For solving the two of above-mentioned technical problem, the technical solution used in the present invention is as follows: above-mentioned low pour point electric insulating oil Compositions is in the electrical equipment including transformator.
In technique scheme, the component of described electric insulation fluid composition, parts by weight and preferably scope and solution The technical scheme that one of technical problem is taked is identical.
The present invention uses following various test method to comment the performance of described low pour point electric insulation fluid composition Fixed, wherein there are oil product kinematic viscosity algoscopy and kinematic viscosity scale algorithm (GB/T265 or ASTM D445), oil product The mensuration Cleveland opening agar diffusion method (GB/T3536 or ASTM D92) of flash-point and burning-point, petroleum products pour point algoscopy (GB/ T3535ASTM D97), active sulfur test method(s) (ASTM D1275), the mensuration of lubricating oil oxidation stability in electric insulating oil Rotary bomb oxidation test (SH/T0193 or ASTM D2112), insulating oil testing method for oxidation characteristics (ASTM D2440).
Low pour point synthetic base oil, antioxidant, metal deactivator are combined and have been screened by the present invention, wherein select Low pour point synthetic base oil has following feature: a1) 100 DEG C time dynamic viscosity be 1.8～4.2 millimeters2/ the second；A2) pour point Less than or equal to-60 DEG C；A3) burning-point is more than or equal to 200 DEG C；A4) one of flash-point preferred version being more than or equal to 150 DEG C of antioxidant is At least one in 2,6 ditertiary butyl p cresol or 2,6-di-tert-butylphenol.The two of the preferred version of antioxidant are for being selected from 2,6 ditertiary butyl p cresol or 2, at least one in 6-di-tert-butylphenol with selected from dialkylthiophosphate esters derivant, two The mixture of at least one in thiophosphate or dibenzyldisulfide.The present invention takes full advantage of the collaborative work of each component With so that compositions can have relatively low pour point, uses inclining of petroleum products pour point algoscopy (GB/T 3535) test oil product Point is less than or equal to-60 DEG C；Use Flash Point for Petroleum Products and burning-point mensuration Cleveland opening agar diffusion method (GB/T3536 or ASTMD92) burning-point of test oil product is more than or equal to 200 DEG C；Excellent oxidation stability, uses the survey of lubricating oil oxidation stability Determine oxidation stability that rotary bomb oxidation test (SH/T0193 or ASTM D2112) tests more than or equal to 800min, use insulating oil oxygen Changing oil product greasy filth after soundness test method (ASTM D2440) tests 72 hours oxidation tests and be not more than 0.15%, acid number is not more than 0.30mgKOH/g, after 164 hours oxidation tests, oil product greasy filth is not more than 0.30%, and acid number is not more than 0.60mgKOH/g；Excellent Anti-sulfur corrosion, use active sulfur test method(s) (ASTM D1275) test non-corrosiveness in electric insulating oil, and corrosion etc. Level, less than or equal to 1 grade, achieves preferable technique effect.
Below by embodiment, the invention will be further elaborated.
Detailed description of the invention
[embodiment 1～6]
According to the parts by weight in table 1, antioxidant, metal deactivator, anti-foaming agent are added at a temperature of 50 DEG C base oil In, stirring is to the most uniformly obtaining described low pour point electric insulation fluid composition.The kind of each component and consumption in compositions, tool Body is shown in Table 1.
Wherein, T501 is 2,6 ditertiary butyl p cresol；Ethanox 4701 is 2,6-di-tert-butylphenol；T322 is dibenzyl Based bisulfide；Irgamet 39 is N, N-diakylaminomethylene-alkylbenzene triazole；Irgamet 30 is N, N-dialkyl group Aminomethylene triazole；T553 is benzotriazole and aldehyde, the condensation substance of amine；T912 is acrylate and ether copolymer.
The dynamic viscosity of base oil in compositions in [embodiment 1～6], pour point, flash-point, burning-point are tested, To the pour point of compositions in [embodiment 1～6], oxidation stability (72h oxidation stability test after greasy filth, acid number, 164h oxygen Change greasy filth after soundness test, acid number and the rotary oxygen bomb value to fresh oil), copper corrosion test, result of the test is shown in Table 2。
Pour point is one of important performance of low pour point electric insulating oil, reflects its ability adapting to pole cold temperature.[real Execute example 1～6] in the pour point of each compositions be respectively less than-60 DEG C, can use in-40～the environment of-50 DEG C at the lowest temperature.
Oxidation stability is one of important performance of low pour point electric insulating oil, to safeguarding that electrical equipment long period is normally transported Turn significant.Each compositions in [embodiment 1～6] has been carried out oxidation stability experimental test, according to ASTM The greasy filth of oil product and acid number after the test of D2440 oxidation stability experimental test, according to the rotation of SH/T0193 method test oil product Oxygen bomb value.After oxidation test, greasy filth and the acid number of oil product are the least, illustrate that the oxidation stability of low pour point electric insulating oil is the best；Oil The rotary oxygen bomb value of product is the biggest, illustrates that the oxidation stability of oil product is the best.Oxidation to [embodiment 1～6] each compositions is stabilized Property, the test data of rotary oxygen bomb value are shown in Table 2.In [embodiment 1～6], after 72 hours oxidation tests of each compositions, greasy filth is not the most More than 0.15%, acid number no more than 0.30mg/kg (in terms of KOH), after 164 hours oxidation tests greasy filth no more than 0.30%, acid number is no more than 0.60mg/kg (in terms of KOH).Comparatively, each compositions oxidation stability is (according to ASTM D2440 oxidation stability experimental test) in, after oxidation stability test in 72 hours, the quality of greasy filth is followed successively by: [embodiment 4] ＞ [embodiment 5] ＞ [embodiment 6] ＞ [embodiment 1] ＞ [embodiment 3] ＞ [embodiment 2], acid number quality are followed successively by: [embodiment 5] ＞ [embodiment 4] ＞ [embodiment 1] ＞ [embodiment 6] ＞ [embodiment 3] ＞ [embodiment 2]；Oxidation stability examination in 164 hours The quality testing rear greasy filth is followed successively by: [embodiment 5] ＞ [embodiment 4] ＞ [embodiment 1] ＞ [embodiment 3] ＞ [embodiment 6] ＞ [embodiment 2], acid number quality are followed successively by: [embodiment 4] ＞ [embodiment 5] ＞ [embodiment 6] ＞ [embodiment 3] ＞ [embodiment 1] ＞ [embodiment 2]；The quality of the rotary oxygen bomb value of each compositions is followed successively by [embodiment 5] ＞ [embodiment 4] ＞ [embodiment 1] ＞ [embodiment 6] ＞ [embodiment 3] ＞ [embodiment 2].Therefore, summary thinks poorly of pour point electric insulating oil oxidation stability 5 index situations, the quality of the oxidation stability of each compositions is followed successively by: [embodiment 4] ≈ [embodiment 5] ＞ [embodiment 1] ≈ [embodiment 6] ＞ [embodiment 3] ＞ [embodiment 2].
Use copper corrosion that the anti-sulfur corrosion of each compositions is tested.According to the method in ASTM D1275 standard A and method B are tested respectively, it is stipulated that the explanation oil product non-corrosiveness when copper corrosion rank is less than grade 3 grades, the most specifically Partition of the level be 1 grade (including two grades of 1a, 1b), 2 grades (including 2a, five grades of 2b, 2c, 2d, 2e), 3 grades (include Two grades of 3a, 3b) totally nine ranks, further comparative descriptions: the corrosion level of copper corrosion is the least, then explanation oil product Copper corrosion hazardness the least (if 1a is best rank) to electrical equipment.Rotten to the copper sheet of [embodiment 1～6] each compositions The test data of erosion performance are shown in Table 2.Each compositions is equal non-corrosiveness in copper strip test, and copper corrosion rank is respectively less than Equal to 1 grade.Comparatively, the anti-sulfur corrosion quality of each compositions is followed successively by: [embodiment 4] ≈ [embodiment 5] ＞ [embodiment 1] ≈ [embodiment 2] ≈ [embodiment 3] ≈ [embodiment 6].
[comparative example 1～5]
Select base oil 3 as the base oil of [comparative example 1], it is characterized by: f1) 100 DEG C time dynamic viscosity be 2.0～ 2.2 millimeter2/ the second；F2) pour point is less than or equal to-45 DEG C；F3) flash-point is more than or equal to 160 DEG C；F4) burning-point is more than or equal to 190 DEG C.
Select base oil 4 as [comparative example 2] and the base oil of [comparative example 3], it is characterized by: g1) 100 DEG C time motion Viscosity is 2.3～2.5 millimeters2/ the second；G2) pour point is less than or equal to-40 DEG C；G3) flash-point is more than or equal to 170 DEG C；G4) burning-point is more than Equal to 200 DEG C.
Select base oil 5 as the base oil of [comparative example 4], it is characterized by: h1) 100 DEG C time dynamic viscosity be 4.0～ 4.5 milli m2/Ss；H2) pour point is less than or equal to-30 DEG C；H3) flash-point is more than or equal to 200 DEG C；H4) burning-point is more than or equal to 240 DEG C.
Select according to the parts by weight in [comparative example 1～4] in table 1, weighed the desired amount of base oil respectively, then Antioxidant, metal deactivator etc. being added at a temperature of 50 DEG C in base oil, stirring is to the most uniformly obtaining [comparative example 1～4] Described electric insulation fluid composition.In [comparative example 1～4] compositions, kind and the consumption of each component are shown in Table 1.
The dynamic viscosity of base oil in compositions in [comparative example 1～4], pour point, flash-point, burning-point are tested, To the pour point of compositions in [comparative example 1～4], oxidation stability (72h oxidation stability test after greasy filth, acid number, 164h oxygen Change greasy filth after soundness test, acid number and the rotary oxygen bomb value to fresh oil), copper corrosion test, result of the test is shown in Table 2。
Compared with [embodiment 1～6], in [comparative example 1～4], lightning and the burning-point of compositions all meet target call, but Pour point is above-60 DEG C, it is impossible to meet the use under environmental condition of extremely trembling with fear；[comparative example 2], the oxidation stability of [comparative example 4] Middle part index number can not meet target call.
Summary is to the pour point of each compositions, oxidation stability (oxidation in [embodiment 1～6] and [comparative example 1～4] Rear greasy filth, acid number), the test result of rotary oxygen bomb value and corrosive nature (copper corrosion) etc., illustrate the present composition There is relatively low pour point (pour point using GB/T3535 method test oil product is the least equal to-60 DEG C), excellent oxidation stability (after using insulating oil testing method for oxidation characteristics (ASTM D2440) to test 72 hours oxidation tests, greasy filth is not more than 0.15%, Acid number is not more than 0.30mg/kg (in terms of KOH), and after 164 hours oxidation tests, greasy filth is not more than 0.30%, and acid number is not more than 0.60mg/kg (in terms of KOH)；Use the oxidation peace that the mensuration rotary bomb oxidation test (SH/T0193) of lubricating oil oxidation stability is tested Qualitative more than or equal to 800min, excellent anti-sulfur corrosion (uses active sulfur test method(s) (ASTMD1275) in electric insulating oil Test non-corrosiveness, and corrosion class is less than or equal to 1 grade).
Table 1

Claims (7)

1. a low pour point electric insulation fluid composition, comprises following component in terms of parts by weight:
A) 100 parts of low pour point synthetic base oils；
B) 0.08～0.4 part of antioxidant；
C) 0～0.05 part of metal deactivator；
Described low pour point synthetic base oil is characterised by: a1) 100 DEG C time dynamic viscosity be 1.8～4.2 millimeters2/ the second；a2) Pour point is less than or equal to-60 DEG C；A3) burning-point is more than or equal to 200 DEG C；A4) flash-point is more than or equal to 150 DEG C；
Described antioxidant selected from DBPC 2,6 ditertiary butyl p cresol, 2,6-di-tert-butylphenol, dialkylthiophosphate esters derivant, two At least one in thiophosphate or dibenzyldisulfide；
Described metal deactivator is selected from N, N-dibutyl aminomethylene-alkylbenzene triazole, N, N-diakylaminomethylene Triazole, N, N-diakylaminomethylene-alkylbenzene triazole, benzotriazole, methyl benzotriazole or benzotriazole and aldehyde, amine At least one in condensation substance.
Low pour point electric insulation fluid composition the most according to claim 1, it is characterised in that in terms of parts by weight, antioxidant Consumption be 0.1～0.4 part, the consumption of metal deactivator is 0.001～0.03 part.
Low pour point electric insulation fluid composition the most according to claim 1, it is characterised in that described antioxidant is selected from 2,6- At least one in ditertbutylparacresol or 2,6-di-tert-butylphenol.
Low pour point electric insulation fluid composition the most according to claim 1, it is characterised in that described antioxidant is selected from 2,6- At least one in ditertbutylparacresol or 2,6-di-tert-butylphenol with selected from dialkylthiophosphate esters derivant, dithio The mixture of at least one in phosphate ester or dibenzyldisulfide；In mixture, selected from 2,6 ditertiary butyl p cresol or At least one in 2,6-di-tert-butylphenol with selected from dialkylthiophosphate esters derivant, phosphorodithioate or dibenzyl two The weight ratio of at least one in sulfide is 1:(0.05～0.5).
Low pour point electric insulation fluid composition the most according to claim 1, it is characterised in that also include in described compositions Anti-foaming agent；In terms of parts by weight, the consumption of anti-foaming agent is 0～0.02 part.
Low pour point electric insulation fluid composition the most according to claim 5, it is characterised in that described anti-foaming agent is selected from methyl Silicone oil, ethyl silicon oil or acrylate and at least one in ether copolymer.
7. the arbitrary described low pour point electric insulation fluid composition of claim 1～6 is for electrically setting including transformator In Bei.
CN201610596165.9A 2016-07-26 2016-07-26 Low pour point electric insulation fluid composition and application thereof Pending CN106244304A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101198682A (en) * 2005-06-23 2008-06-11 国际壳牌研究有限公司 Electrical oil formulation
CN101372645A (en) * 2007-08-23 2009-02-25 株式会社日本能源 Electrical insulation oil and preparation thereof
CN101784646A (en) * 2007-07-31 2010-07-21 雪佛龙美国公司 Electric insulation oil composition and preparation thereof
CN104250578A (en) * 2013-06-26 2014-12-31 中国石油化工股份有限公司 Electrical insulating oil composition and use thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101198682A (en) * 2005-06-23 2008-06-11 国际壳牌研究有限公司 Electrical oil formulation
CN101784646A (en) * 2007-07-31 2010-07-21 雪佛龙美国公司 Electric insulation oil composition and preparation thereof
CN101372645A (en) * 2007-08-23 2009-02-25 株式会社日本能源 Electrical insulation oil and preparation thereof
CN104250578A (en) * 2013-06-26 2014-12-31 中国石油化工股份有限公司 Electrical insulating oil composition and use thereof

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Application publication date: 20161221