CN114574276B - Electric insulation medium composition and preparation method and application thereof - Google Patents
Electric insulation medium composition and preparation method and application thereof Download PDFInfo
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- CN114574276B CN114574276B CN202011388824.2A CN202011388824A CN114574276B CN 114574276 B CN114574276 B CN 114574276B CN 202011388824 A CN202011388824 A CN 202011388824A CN 114574276 B CN114574276 B CN 114574276B
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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
- C10M171/00—Lubricating compositions characterised by purely physical criteria, e.g. containing as base-material, thickener or additive, ingredients which are characterised exclusively by their numerically specified physical properties, i.e. containing ingredients which are physically well-defined but for which the chemical nature is either unspecified or only very vaguely indicated
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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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- 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
- C10M2207/28—Esters
- C10M2207/287—Partial esters
- C10M2207/289—Partial esters containing free hydroxy 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
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/08—Amides
- C10M2215/082—Amides containing hydroxyl groups; Alkoxylated derivatives
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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
- C10M2215/10—Amides of carbonic or haloformic acids
-
- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells
Abstract
The invention relates to the field of chemical industry, in particular to an electrical insulation medium composition and a preparation method and application thereof. The electric insulation medium composition comprises an alcohol compound, an amide compound, an azole compound, an ester compound and deionized water; the alcohol compound is selected from one or more of ethylene glycol, propylene glycol and glycerol; the amide compound is selected from carbonic acid amide and/or citric acid amide; the azole compound is selected from one or more of methylbenzotriazole, benzotriazole and mercaptobenzothiazole; the ester compound is selected from 3, 5-di-tert-butyl-4-hydroxy phenylpropionic acid isooctyl ester and/or 3, 5-di-tert-butyl-4-hydroxy phenylpropionic acid methyl ester, and the amide, azole and ester compounds account for 0.1-5% of the total mass of the electric insulation medium composition. The electric insulation medium composition has excellent insulation performance and metal corrosion resistance, and can be used for temperature control systems of power batteries and hydrogen fuel batteries.
Description
Technical Field
The invention relates to the technical field of chemical industry, in particular to an electrical insulation medium composition; and more particularly, to a heat transfer medium that directly blocks the passage of electric current.
Background
Thermal management relates to various fields such as industry and automobile industry, and particularly, a composition for a temperature control system of a charged device puts higher requirements on the insulation property of a medium, and the medium is required to have excellent insulation property in the operation process of the device. Temperature control liquid cooling systems such as cooling media for power batteries, cooling media for offshore wind power, hydrogen fuel engines and the like all put more rigorous requirements on the conductivity of the temperature control media. For example, the heat-conducting medium of the temperature control system of the hydrogen fuel cell engine is required to have excellent insulation property, and the electric conductivity of the heat-conducting medium is less than 5uS/cm; if the engine coolant is directly used as a cooling medium, the coolant is broken and short-circuited, hydrogen and oxygen are generated under the action of current, and even the coolant of the hydrogen fuel cell cannot be started and normally works.
Chinese patent CN109148915 discloses a fuel cell coolant, which mainly comprises ethylene glycol, triethanolamine, alkyl diethanolamide, phosphoric triester, triazole compounds, antifoaming agents and deionized water. Although it can prevent metal corrosion and has low conductivity, the present inventors have found through further research that it still has the problem that the hydrolysis of the phosphate triester leads to conductivity increase and can not maintain low conductivity for a long time, and in addition, under the system, the glycol is easy to oxidize and turn into yellow, which affects the appearance of the product and also leads to high conductivity.
In summary, with the application of liquid cooling technology of electric vehicles and the rapid development of hydrogen fuel cell engines, it is necessary to provide new technology and new scheme of insulating medium composition in order to solve the safety accident of electric vehicle liquid cooling caused by electric short circuit and support the requirement of low conductivity of temperature control medium for hydrogen fuel cell engines.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an electric insulation medium composition with excellent electric insulation performance and metal corrosion prevention performance, and a preparation method and application thereof.
In order to achieve the purpose, the technical scheme of the invention is as follows:
an electrical insulation medium composition comprises an alcohol compound, an amide compound, an azole compound, an ester compound and deionized water;
the amide compound is carbonic acid amide and/or citric acid amide; the ester compound is 3, 5-di-tert-butyl-4-hydroxy-iso-octyl phenylpropionate and/or 3, 5-di-tert-butyl-4-hydroxy-methyl phenylpropionate.
The invention particularly discovers that the dielectric composition of the electric insulator, which is composed of the alcohol compound, the specific amide compound, the azole compound, the specific ester compound and the deionized water, has excellent electric insulation performance and corrosion resistance, and the product is colorless and transparent in appearance, stable in property and not easy to oxidize. Preferably, the amide-based compound is citric acid amide, in order to make the electrical insulation medium composition of the present invention more alkali resistant.
In the invention, the azole compound is selected from one or more of benzotriazole, methylbenzotriazole and mercaptobenzothiazole; preferably methyl benzotriazole.
In the invention, the alcohol compound is selected from one or more of ethylene glycol, propylene glycol and glycerol.
The method screens alcohol compounds and azole compounds, and determines the optimal selection of the alcohol compounds and the azole compounds on the basis of a large number of experimental researches and test experiments, so that the alcohol compounds and the azole compounds can generate a synergistic effect with a specific amide compound.
And when the alcohol compound and the azole compound are selected, the alcohol compound and the azole compound are integrally compatible with the specific amide compound and the specific ester compound, so that the corrosion resistance and the electrical insulation property are improved.
In the present invention, preferably, the mass ratio of the alcohol compound, the amide compound, and the azole compound is 2000: (1-3): (3-6);
and/or the sum of the mass of the amide compound, the mass of the azole compound and the mass of the ester compound accounts for 0.1-5% of the total mass of the electric insulation medium composition.
In the invention, the resistivity of the deionized water is more than 18 megaohms.
In order to further improve the electrical insulation performance and the metal corrosion resistance of the electrical insulation medium composition, the invention researches the dosage of each component in the electrical insulation medium composition, and determines a proper proportion, which is as follows:
the electric insulation medium composition comprises the following components in parts by weight:
preferably, the electrical insulation medium composition comprises the following components in parts by weight:
more preferably, the electrically insulating medium composition comprises the following components in parts by weight:
as a preferred embodiment, the electrical insulation medium composition of the present invention comprises the following components in parts by weight:
or the like, or, alternatively,
or the like, or, alternatively,
or the like, or a combination thereof,
or the like, or, alternatively,
or the like, or, alternatively,
in the present invention, the electrical conductivity of the electrically insulating dielectric composition is from 0.1uS/cm to 50uS/cm, preferably from 5uS/cm to 35uS/cm.
The invention also provides a preparation method of the electrical insulation medium composition, which comprises the following steps:
1) Mixing the amide compound, the ester compound and the azole compound with the alcohol compound at 60-90 ℃ to obtain a first solution;
2) After impurities are removed by the hyperfiltration device, the mixture passes through ion exchange resin (harmful impurities such as ions are further reduced) until a second solution with the conductivity of 0.1 uS/cm-50 uS/cm is formed;
3) And mixing the second solution with the deionized water at normal temperature.
Preferably, the ion exchange resin is a U.S. Dow Rohm and Hass UP6150 nuclear grade polishing mixed resin or
MB-106UP ion exchange resin, when the temperature of the first solution is reduced to 20-40 ℃, the first solution is then passed through the ion exchange resin to realize ideal ion removal effect.
Preferably, the first solution is filtered through a hyperfiltration device (0.5 um) in step 2) to remove impurities and the like.
The invention also provides an application of the electric insulation medium composition or the electric insulation medium composition prepared by the preparation method in a temperature control system of a power battery of an electric automobile or a temperature control system of a hydrogen fuel battery.
The invention has the beneficial effects that:
the electric insulation dielectric composition has excellent electric insulation performance and metal protection performance, and the product is colorless and transparent in appearance, stable in property and not easy to oxidize. The hydrogen-oxygen separation device can directly block current, solve the problem of hydrogen separation and oxygen separation caused by short circuit of a temperature control system of the power battery of the electric automobile, and even can be applied to a temperature control system of the hydrogen fuel battery to solve the problem of current short circuit of the hydrogen fuel battery.
Detailed Description
Preferred embodiments of the present invention will be described in detail with reference to the following examples. It is to be understood that the following examples are given for illustrative purposes only and are not intended to limit the scope of the present invention. Various modifications and alterations of this invention will become apparent to those skilled in the art without departing from the spirit and scope of this invention.
The experimental procedures used in the following examples are all conventional procedures unless otherwise specified. Materials, reagents and the like used in the following examples are commercially available unless otherwise specified.
In the specific embodiment of the invention, the ultra-fine filtration is carried out by adopting an ultra-fine filtration device of 0.5um, the resistivity of the used deionized water is 18 megaohms, and the used ion exchange resin is U.S. Dow Rohm and Haas UP6150 nuclear grade polishing mixed resin.
Example 1
This example provides an electrical insulation dielectric composition, comprising the following components in parts by weight:
the preparation method of the electric insulation medium comprises the following steps:
1) Adding 2 parts of carbonic acid amide and 1 part of citric acid amide into 2000 parts of ethylene glycol, heating to 80 ℃, stirring for 50min, adding 5 parts of methylbenzotriazole after dissolution, keeping the temperature at 80 ℃, stirring until dissolution, and then adding 1 part of 3, 5-di-tert-butyl-4-hydroxy-iso-octyl phenylpropionate for dissolution to obtain a first solution.
2) And (3) filtering the first solution through ultra-fine filtration to remove substances such as impurities and the like.
3) And (3) filtering the first solution subjected to ultrafiltration to remove impurities, cooling to 35 ℃, and passing through ion exchange resin until the conductivity is 5.2uS/cm.
4) And mixing and stirring the liquid with the conductivity of 5.2uS/cm and 2000 parts of deionized water at normal temperature to obtain the electrical insulation medium composition.
Example 2
This example provides an electrical insulation dielectric composition, comprising the following components in parts by weight:
the preparation method of the electric insulation medium comprises the following steps:
1) Adding 3 parts of carbonic acid amide into 2000 parts of ethylene glycol, heating to 80 ℃, stirring for 40min, adding 5 parts of methylbenzotriazole after dissolution, keeping the temperature at 80 ℃, stirring until dissolution, and then adding 0.8 part of 3, 5-di-tert-butyl-4-hydroxy-phenylpropionic acid isooctyl ester for dissolution to obtain a first solution.
2) Filtering the first solution by ultra-fine filtration to remove impurities and other substances.
3) And (3) filtering the first solution subjected to ultrafiltration to remove impurities, cooling to 40 ℃, and passing through ion exchange resin until the conductivity is 3.2uS/cm.
4) And mixing and stirring the liquid with the conductivity of 3.2uS/cm and 2000 parts of deionized water at normal temperature to obtain the electrical insulation medium composition.
Example 3
This example provides an electrical insulation dielectric composition, comprising the following components in parts by weight:
the preparation method of the electric insulation medium comprises the following steps:
1) Adding 1 part of carbonic acid amide and 1 part of citric acid amide into a mixed solution of 1000 parts of ethylene glycol and 1000 parts of propylene glycol, heating to 80 ℃, stirring for 35min, adding 4 parts of methylbenzotriazole after dissolution, keeping the temperature at 80 ℃, stirring until dissolution, and then adding 1 part of 3, 5-di-tert-butyl-4-hydroxy methyl phenylpropionate for dissolution to obtain a first solution.
2) And (3) filtering the first solution through ultra-fine filtration to remove substances such as impurities and the like.
3) And (3) filtering the first solution subjected to ultrafiltration to remove impurities, cooling to 35 ℃, and passing through ion exchange resin until the conductivity is 12.1uS/cm.
4) And mixing and stirring the liquid with the conductivity of 12.1uS/cm and 2000 parts of deionized water at normal temperature to obtain the electrical insulation medium composition.
Example 4
The embodiment provides an electrical insulation medium composition, which comprises the following components in parts by weight:
the preparation method of the electric insulation medium comprises the following steps:
1) Adding 1 part of citric acid amide into 2000 parts of glycol solution, heating to 80 ℃, stirring for 30min, adding 6 parts of methyl benzotriazole after dissolution, keeping the temperature at 80 ℃, stirring until dissolution, and then adding 2 parts of 3, 5-di-tert-butyl-4-hydroxy-iso-octyl phenylpropionate for dissolution to obtain a first solution.
2) And (3) filtering the first solution through ultra-fine filtration to remove substances such as impurities and the like.
3) And (3) filtering the first solution subjected to ultrafiltration to remove impurities, cooling to 40 ℃, and passing through ion exchange resin until the conductivity is 1.5uS/cm.
4) And mixing and stirring the liquid with the conductivity of 1.5uS/cm and 2000 parts of deionized water at normal temperature to obtain the electric insulation medium composition.
Example 5
This example provides an electrical insulation dielectric composition, comprising the following components in parts by weight:
the preparation method of the electric insulation medium comprises the following steps:
1) Adding 2 parts of citric acid amide into 2000 parts of glycol solution, heating to 80 ℃, stirring for 60min, adding 4 parts of methylbenzotriazole after dissolution, keeping the temperature at 80 ℃, stirring until dissolution, and then adding 2 parts of 3, 5-di-tert-butyl-4-hydroxy phenylpropionic acid methyl ester for dissolution to obtain a first solution.
2) Filtering the first solution by ultra-fine filtration to remove impurities and other substances.
3) And (3) filtering the first solution subjected to ultrafiltration to remove impurities, cooling to 40 ℃, and passing through ion exchange resin until the conductivity is 15.2uS/cm.
4) And mixing and stirring the liquid with the conductivity of 15.2uS/cm and 2000 parts of deionized water at normal temperature to obtain the electric insulation medium composition.
Example 6
This example provides an electrical insulation dielectric composition, comprising the following components in parts by weight:
the preparation method of the electric insulation medium comprises the following steps:
1) Adding 3 parts of citric acid amide into 2000 parts of glycol solution, heating to 80 ℃, stirring for 50min, adding 2 parts of methyl benzotriazole and 1 part of benzotriazole after dissolution, keeping the temperature at 80 ℃, stirring until dissolution, and then adding 3 parts of 3, 5-di-tert-butyl-4-hydroxy methyl phenylpropionate for dissolution to obtain a first solution.
2) And (3) filtering the first solution through ultra-fine filtration to remove substances such as impurities and the like.
3) And (3) filtering the first solution subjected to ultrafiltration to remove impurities, cooling to 40 ℃, and passing through ion exchange resin until the conductivity is 10.1uS/cm.
4) And mixing and stirring the liquid with the conductivity of 10.1uS/cm and 2000 parts of deionized water at normal temperature to obtain the electrical insulation medium composition.
Example 7
This example provides an electrical insulation dielectric composition, comprising the following components in parts by weight:
the preparation method of the electric insulation medium comprises the following steps:
1) Adding 0.5 part of carbonic acid amide into 800 parts of glycol solution, heating to 80 ℃, stirring for 45min, adding 0.4 part of methylbenzotriazole after dissolution, keeping the temperature at 80 ℃, stirring until dissolution, and then adding 0.01 part of 3, 5-di-tert-butyl-4-hydroxy-iso-octyl phenylpropionate for dissolution to obtain a first solution.
2) And (3) filtering the first solution through ultra-fine filtration to remove substances such as impurities and the like.
3) And (3) filtering the first solution subjected to ultrafiltration to remove impurities, cooling to 40 ℃, and passing through ion exchange resin until the conductivity is 2.3uS/cm.
4) And mixing and stirring the liquid with the conductivity of 2.3uS/cm and 20 parts of deionized water at normal temperature to obtain the electric insulation medium composition.
Comparative example 1
The comparative example provides a heat transfer medium comprising, in parts by weight, 2000 parts ethylene glycol, 2000 parts deionized water, and having an electrical conductivity of 0.5uS/cm.
Comparative example 2
The comparative example provides a heat transfer medium comprising, by weight, 2000 parts propylene glycol and 2000 parts deionized water, having an electrical conductivity of 0.5uS/cm.
Comparative example 3
The comparative example provides a heat transfer medium comprising, by weight, 1000 parts ethylene glycol, 1000 parts propylene glycol, 2000 parts deionized water, and having an electrical conductivity of 0.5uS/cm.
Comparative example 4
This comparative example provides a heat transfer medium prepared in the same manner as in example 2 except that: by replacing the carbonic acid amide with caprylic diethanolamide, a composition was obtained which was cloudy in appearance.
Comparative example 5
This comparative example provides a heat transfer medium prepared in the same manner as in example 2 except that: triethyl phosphate is used to replace 3, 5-di-tert-butyl-4-hydroxy-benzene-propionic acid isooctyl ester.
Comparative example 6
This comparative example provides a heat transfer medium prepared in the same manner as in example 2 except that: 5 parts of carbonic acid amide and 2 parts of methylbenzotriazole.
Test example 1
This test example was conducted for the performance tests of the electrically insulating medium compositions prepared in examples 1 to 7 and the heat transfer media prepared in comparative examples 1 to 6. Specifically, the solutions prepared in each example and comparative example were immersed in aluminum, steel and red copper metal test pieces in SH/T0085-1991 specification, the temperature was raised to 90 ℃ and maintained for 168h, the conductivity of the samples was tested, the appearance of the samples was observed, and the metal test pieces were treated according to the SH/T0085-1991, and the specific test results are shown in Table 1.
TABLE 1 results of performance test of heat transfer media of examples 1 to 7 and comparative examples 1 to 6
In conclusion, the electrical insulation medium composition of the present invention has excellent insulation properties and metal protection properties.
Although the invention has been described in detail hereinabove by way of general description, specific embodiments and experiments, it will be apparent to those skilled in the art that many modifications and improvements can be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (9)
1. An electrical insulation medium composition is characterized by comprising an alcohol compound, an amide compound, an azole compound, an ester compound and deionized water;
the amide compound is carbonic acid amide and/or citric acid amide; the ester compound is 3, 5-di-tert-butyl-4-hydroxy-iso-octyl phenylpropionate and/or 3, 5-di-tert-butyl-4-hydroxy-methyl phenylpropionate;
the azole compound is one or more of methylbenzotriazole, benzotriazole and mercapto benzothiazole;
the alcohol compound is one or more of ethylene glycol, propylene glycol and glycerol;
the electric insulation medium composition comprises the following components in parts by weight:
2. the electrical insulation dielectric composition of claim 1, wherein the azole compound is methylbenzotriazole.
3. The electrical insulation medium composition according to claim 1, wherein the mass ratio of the alcohol compound, the amide compound, and the azole compound is 2000: (1-3): (3-6);
and/or the sum of the mass of the amide compound, the mass of the azole compound and the mass of the ester compound accounts for 0.1-5% of the total mass of the electric insulation medium composition.
4. The electrical insulation medium composition of claim 1 wherein the deionized water has a resistivity of 18 megaohms or greater.
5. An electrical insulation medium composition according to claim 1, comprising the following components in parts by weight:
or the like, or, alternatively,
or the like, or a combination thereof,
or the like, or a combination thereof,
or the like, or, alternatively,
6. electrical insulation medium composition according to any one of the claims 1-5, wherein the electrical conductivity of the electrical insulation medium composition is in the range of 0.1uS/cm to 50uS/cm.
7. A process for preparing an electrical insulation medium composition according to any one of claims 1 to 6, comprising the steps of:
1) Mixing the amide compound, the ester compound and the azole compound with the alcohol compound at 60-90 ℃ to obtain a first solution;
2) Removing impurities by a hyperfiltration device, and then passing through ion exchange resin until a second solution with the conductivity of 0.1 uS/cm-50 uS/cm is formed;
3) And mixing the second solution with the deionized water at normal temperature.
8. The production method according to claim 7,
the ion exchange resin is American Dow Rohm and Hass UP6150 or
MB-106UP, and then the first solution is cooled to 20-40 ℃ and then passes through the ion exchange resin.
9. Use of the electrical insulation medium composition according to any one of claims 1 to 6 or the electrical insulation medium composition prepared by the preparation method according to claim 7 or 8 in a temperature control system of a power cell of an electric vehicle or a temperature control system of a hydrogen fuel cell.
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| JP2019156902A (en) * | 2018-03-08 | 2019-09-19 | トヨタ自動車株式会社 | Coolant composition |
| CN111187601A (en) * | 2018-11-14 | 2020-05-22 | 丰田自动车株式会社 | Cooling liquid |
| CN111218259A (en) * | 2018-11-27 | 2020-06-02 | 北京蓝星清洗有限公司 | New energy automobile power battery cooling liquid and preparation method thereof |
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