Fluorinated liquid composition and use thereof

Abstract

The application discloses a fluorinated liquid composition and application thereof. The fluorinated liquid composition comprises a perfluoro or polyfluoro ester, and further comprises any one or any two of a perfluoro or polyfluoro alkane, a perfluoro or polyfluoro alkene, a perfluoro or polyfluoro alcohol, a perfluoro or polyfluoro ether and a perfluoro or polyfluoro ketone. The fluorinated liquid composition has a high thermal conductivity and a good heat dissipation effect. The fluorinated liquid composition can be applied to a chip heat dissipation system, a large server heat dissipation system, a supercomputing data center heat dissipation system, a new energy vehicle thermal management system and the like.

Description

Technical Field

[0001] This application relates to the field of liquid cooling technology, and more specifically, to a fluorinated liquid composition and its application. Background Technology

[0002] Azeotropy refers to a solution in equilibrium where the gas and liquid phases are completely identical in composition; the corresponding temperature is called the azeotropic temperature or azeotropic point. An azeotrope is a mixture of two or more liquid components that, when boiling under constant pressure, maintains its composition and boiling point. At its azeotropic point, the proportion of the gaseous component produced by boiling is exactly the same as that of the liquid component. Azeotropes are classified into three types based on their azeotropic points: positive azeotropes, negative azeotropes, and heterogeneous azeotropes. A solution is called a positive azeotrope when its azeotropic temperature is lower than the boiling points of all its components; a negative azeotrope is called a negative azeotrope when its azeotropic temperature is higher than the boiling points of all its components; and a heterogeneous azeotrope is characterized by azeotropic phenomena occurring between the miscible spaces of the solution when the two components are not completely miscible (i.e., the solution contains more than two liquid phases).

[0003] Fluorinated fluid is a chemical solvent that is colorless, transparent, odorless, safe, and non-toxic. Currently, the thermal conductivity and heat dissipation properties of fluorinated coolants still need further improvement. Summary of the Invention

[0004] This application provides a fluorinated liquid composition and its application, which has a high thermal conductivity and good heat dissipation effect.

[0005] In a first aspect, embodiments of this application provide a fluorinated liquid composition comprising a perfluorinated or polyfluorinated ester, and further comprising any one or any two of perfluorinated or polyfluorinated alkanes, perfluorinated or polyfluorinated olefins, perfluorinated or polyfluorinated alcohols, perfluorinated or polyfluorinated ethers, and perfluorinated or polyfluorinated ketones; the fluorinated liquid composition is an azeotrope or azeotropic compound composed of the components.

[0006] This application enables the fluorinated liquid composition to possess high thermal conductivity, low boiling point, and high insulation properties by using any one or any two of perfluorinated or polyfluoroalkane, perfluorinated or polyfluoroolefin, perfluorinated or polyfluorool, perfluorinated or polyfluoroether, and perfluorinated or polyfluoroketone in combination with perfluorinated or polyfluoroester to form an azeotrope or azeotrope.

[0007] In an optional embodiment, the boiling point difference between the component with the highest boiling point and the component with the lowest boiling point in the fluorinated liquid composition does not exceed 30°C, thereby making the differences between the components smaller and making it easier to obtain a stable fluorinated liquid composition with high thermal conductivity and good insulation.

[0008] In an optional embodiment, the perfluorinated or polyfluorinated ester is selected from any one of methyl trifluoropyruvate, ethyl pentafluoropropionate, ethyl trifluoropyruvate, 2,2,2-trifluoroethyl carbamate, trifluoroethanol acetate, trifluoroethanol trifluoroacetate, methyl pentafluoropropionate, methyl heptafluorobutyrate, methyl heptafluoroisobutyrate, isopropyl trifluoroacetate, ethyl trifluoroacetate, methyl trifluoroacetate, and hexafluoroisopropyl acetate.

[0009] By combining the above-mentioned perfluorinated or polyfluorinated esters with different properties with other fluorinated organic liquid compounds, azeotropes or azeotropic-like compositions can be obtained, which can better adjust the boiling point of the fluorinated liquid-immersion cooling medium.

[0010] In an optional embodiment, the perfluorinated or polyfluorinated ester is selected from 2,2,2-trifluoroethyl carbamate, hexafluoroisopropyl acetate, ethyl trifluoroacetate, or methyl trifluoroacetate.

[0011] Choosing the above-mentioned perfluorinated or polyfluorinated esters is beneficial for obtaining azeotropes or azeotropic-like compositions with lower boiling points, higher thermal conductivity, and better insulation.

[0012] In an optional embodiment, the perfluorinated or polyfluoroalkane is selected from any one of perfluoro(methylcyclohexane), perfluoro-2-methylpentane, 1H-perfluorohexane, perfluoron-pentane, 1H-perfluoropentane, perfluoro1,2-dimethylcyclobutane, perfluorokerosene, perfluorohexane, hexafluorobenzene, hexadecylfluoroheptane, 2H,3H-decafluoropentane, and 1,1,2,2,3,3,4,4,5-nonafluorocyclopentane.

[0013] Choosing the above-mentioned perfluorinated or polyfluorinated alkanes is beneficial for obtaining azeotropes or azeotropic-like compositions with lower boiling points, higher thermal conductivity, and better insulation.

[0014] In an optional embodiment, the perfluoro or polyfluoroalkane is selected from perfluoro-2-methylpentane or 2H,3H-decafluoropentane.

[0015] In an optional embodiment, the fluorinated liquid composition consists of hexafluoroisopropyl acetate and perfluoro-2-methylpentane; or, the fluorinated liquid composition consists of hexafluoroisopropyl acetate and 2H,3H-decafluoropentane.

[0016] By selecting the above-mentioned substances to form a fluorinated liquid composition, an azeotrope or azeotropic composition with low boiling point, high thermal conductivity, and good insulation can be obtained.

[0017] In optional embodiments, the perfluorinated or polyfluoroolefin is selected from any one of 1H,1H,2H-perfluoro-1-hexene, 1H-perfluorobut-1-ene, octafluorocyclopentene, perfluorohept-1-ene, perfluoro(2-methyl-2-pentene), perfluorohex-1-ene, dodecadiene-1,9-decadiene, and 6H-perfluoro-1-hexene.

[0018] Choosing the above-mentioned perfluorinated or polyfluorinated olefins is beneficial for obtaining azeotropes or azeotropic-like compositions with lower boiling points, higher thermal conductivity, and better insulation.

[0019] In optional embodiments, the fluorinated liquid composition comprises hexafluoroisopropyl acetate and perfluoro(2-methyl-2-pentene); or, the fluorinated liquid composition comprises methyl pentafluoropropionate and perfluorohex-1-ene; or, the fluorinated liquid composition comprises hexafluoroisopropyl acetate, perfluoro-2-methylpentane, and perfluoro(2-methyl-2-pentene); or, the fluorinated liquid composition comprises ethyl trifluoroacetate, 1H-perfluoropentane, and perfluoro(2-methyl-2-pentene).

[0020] By selecting the above-mentioned substances to form a fluorinated liquid composition, an azeotrope or azeotropic composition with low boiling point, high thermal conductivity, and good insulation can be obtained.

[0021] In an optional embodiment, the perfluorinated or polyfluorinated alcohol is selected from any one of perfluorotert-butanol, 2,2,2-trifluoroethanol, 2,2,3,3,3-pentafluoro-1-propanol, 1,1,1,3,3,3-hexafluoro-2-methyl-2-propanol, 1,1,1,3,3,3-hexafluoro-2-propanol, and 2,2,3,3,4,4,4-heptafluoro-1-butanol.

[0022] Choosing the above-mentioned perfluorinated or polyfluorinated alcohols is beneficial for obtaining azeotropes or azeotropic-like compositions with lower boiling points, higher thermal conductivity, and better insulation.

[0023] In optional embodiments, the fluorinated liquid composition comprises hexafluoroisopropyl acetate and perfluorotert-butanol; or, the fluorinated liquid composition comprises methyl trifluoroacetate and perfluorotert-butanol; or, the fluorinated liquid composition comprises hexafluoroisopropyl acetate, perfluoro-2-methylpentane, and perfluorotert-butanol; or, the fluorinated liquid composition comprises hexafluoroisopropyl acetate, perfluoro(2-methyl-2-pentene), and perfluorotert-butanol.

[0024] By selecting the above-mentioned substances to form a fluorinated liquid composition, an azeotrope or azeotropic composition with low boiling point, high thermal conductivity, and good insulation can be obtained.

[0025] In optional embodiments, the perfluoro or polyfluoroether is selected from perfluorobutyl methyl ether, perfluoroisobutyl methyl ether, bis(2,2,2-trifluoroethyl) ether, fluoromethyl-1,1,1,3,3,3-hexafluoroisopropyl ether, 2,2,2-trifluoroethyl methyl ether, 2,2,3,3,3-pentafluoropropyl methyl ether, heptafluoropropyl 1,2,2,2-tetrafluoroethyl ether, difluoromethyl 2,2,3,3-tetrafluoropropyl ether, heptafluoroisopropyl methyl ether, etc. The ether, bis-(1,2,2,2-tetrafluoroethyl) ether, 1,1,2,2-tetrafluoroethyl ethyl ether, ethyl 1,1,2,3,3,3-hexafluoropropyl ether, methyl 2,2,3,3,3-pentafluoropropyl ether, allyl heptafluoroisopropyl ether, 1,1,2,2-tetrafluoroethyl 2,2,3,3-tetrafluoropropyl ether, 1,1,2,3,3,3-hexafluoropropyl methyl ether, and 1,1,2,2-tetrafluoroethyl methyl ether.

[0026] Choosing the above-mentioned perfluorinated or polyfluorinated ethers is beneficial for obtaining azeotropes or azeotropic-like compositions with lower boiling points, higher thermal conductivity, and better insulation.

[0027] In optional embodiments, the fluorinated liquid composition comprises hexafluoroisopropyl acetate and fluoromethyl-1,1,1,3,3,3-hexafluoroisopropyl ether; or, the fluorinated liquid composition comprises methyl trifluoroacetate and 1,1,2,3,3,3-hexafluoropropyl methyl ether; or, the fluorinated liquid composition comprises hexafluoroisopropyl acetate, perfluoro-2-methylpentane and methyl 2,2,3,3,3-pentafluoropropyl ether; or, the fluorinated liquid composition comprises hexafluoroisopropyl acetate, perfluoro(2-methyl-2-pentene) and methyl 2,2,3,3,3-pentafluoropropyl ether; or, the fluorinated liquid composition comprises ethyl trifluoroacetate, 1,1,1,3,3,3-hexafluoro-2-propanol and heptafluoropropyl 1,2,2,2-tetrafluoroethyl ether.

[0028] By selecting the above-mentioned substances to form a fluorinated liquid composition, an azeotrope or azeotropic composition with low boiling point, high thermal conductivity, and good insulation can be obtained.

[0029] In an optional embodiment, the perfluoro or polyfluoroketone is selected from any one of methyl perfluorobutyl ketone, 3H-perfluoropentane-2,4-dione, 1,1,1,2,2,4,5,5,5-nonafluoro-4-(trifluoromethyl)-3-pentanone, methyl pentafluoroethyl ketone, methyl heptafluoropropyl ketone, and methyl decafluoroheptyl ketone.

[0030] Choosing the above-mentioned perfluorinated or polyfluoroketones is beneficial for obtaining azeotropes or azeotropic-like compositions with lower boiling points, higher thermal conductivity, and better insulation.

[0031] In optional embodiments, the fluorinated liquid composition comprises hexafluoroisopropyl acetate and 1,1,1,2,2,4,5,5,5-nonafluoro-4-(trifluoromethyl)-3-pentanone; or, the fluorinated liquid composition comprises methyl trifluoroacetate and perfluorohexanone; or, the fluorinated liquid composition comprises hexafluoroisopropyl acetate, 2H,3H-decafluoropentane and perfluorohexanone; or, the fluorinated liquid composition comprises 2,2,2-trifluoroethyl carbamate, perfluorohex-1-ene and methylpentadecafluoroheptyl ketone; or, the fluorinated liquid composition comprises methyl trifluoroacetate, perfluorotert-butanol and methylpentadecafluoroethyl ketone; or, the fluorinated liquid composition comprises hexafluoroisopropyl acetate, heptafluoroisopropyl methyl ether and methylpentadecafluoroheptyl ketone.

[0032] By selecting the above-mentioned substances to form a fluorinated liquid composition, an azeotrope or azeotropic composition with low boiling point, high thermal conductivity, and good insulation can be obtained.

[0033] In an optional embodiment, the fluorinated liquid composition further has at least one of the following characteristics:

[0034] Feature 1: The thermal conductivity of the fluorinated liquid composition is ≥0.08 W / (m·K);

[0035] Feature 2: The boiling point of the fluorinated liquid composition is 30-80℃;

[0036] Feature 3: The dielectric constant of the fluorinated liquid composition is ≤5 under 1KHz conditions.

[0037] That is, the fluorinated liquid composition of this application has a low boiling point, high thermal conductivity and good insulation properties.

[0038] Secondly, this application provides the use of the fluorinated liquid composition as described in any of the foregoing embodiments in the preparation of a cooling medium, which can have the characteristics of good heat transfer effect, uniform heat dissipation, and stable cooling effect. In an optional embodiment, the cooling medium is an immersion cooling medium.

[0039] In an optional implementation, the cooling medium is used in the liquid cooling system of the electronic device.

[0040] In optional implementations, the liquid cooling system of the electronic device includes a chip heat dissipation system, a server heat dissipation system, a supercomputing data center heat dissipation system, or a new energy vehicle thermal management system.

[0041] Thirdly, this application provides a liquid cooling system comprising electronic devices and a cooling medium prepared from a fluorinated liquid composition as described in any of the foregoing embodiments, wherein the electronic devices are immersed in the liquid cooling medium. Attached Figure Description

[0042] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0043] Figure 1 This is a schematic diagram of the data center immersion cooling system of this application. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below. Where specific conditions are not specified in the embodiments, conventional conditions or conditions recommended by the manufacturer shall apply. Reagents or instruments whose manufacturers are not specified are all conventional products that can be purchased commercially.

[0045] First, the application scenarios of the embodiments of this application are introduced. See also... Figure 1 As shown, the fluorinated liquid composition provided in this application can be added to the closed system of a server. Through vaporization phase change heat absorption, it removes the heat generated during the operation of the server. The vaporized fluorinated liquid gas comes into contact with the heat exchange system and is then reliquefied and flows back to the server's cooling system.

[0046] The following is a detailed description of the fluorinated liquid composition provided in this application and its applications.

[0047] This application discloses a fluorinated liquid composition comprising a perfluorinated or polyfluorinated ester, and further comprising any one or any two of perfluorinated or polyfluorinated alkanes, perfluorinated or polyfluorinated olefins, perfluorinated or polyfluorinated alcohols, perfluorinated or polyfluorinated ethers, and perfluorinated or polyfluorinated ketones. The fluorinated liquid composition is an azeotrope or azeotropic-like compound composed of the components.

[0048] This fluorinated liquid composition can also be called a "high thermal conductivity, low boiling point fluorinated liquid azeotrope or azeotropic-like composition." Specifically, it refers to a fluorinated liquid azeotrope or azeotropic-like composition that, under standard atmospheric pressure, has a constant temperature point when boiling or evaporating, or has a constant composition ratio in the liquid or gas phase, or exhibits a tendency not to fractionate. "Azeotropic-like" specifically refers to the phenomenon that when the composition is heated at a temperature higher than its boiling point, its liquid temperature fluctuates around the boiling point temperature.

[0049] The fluorinated liquid compositions in the embodiments of this application include either "binary fluorinated liquid organic compounds" or "ternary fluorinated liquid organic compounds." For ease of understanding and distinction, "binary fluorinated liquid organic compounds" may include perfluorinated or polyfluorinated esters as the base component, and any one of perfluorinated or polyfluorinated alkanes, perfluorinated or polyfluorinated olefins, perfluorinated or polyfluorinated alcohols, perfluorinated or polyfluorinated ethers, and perfluorinated or polyfluorinated ketones; "ternary fluorinated liquid organic compounds" may include perfluorinated or polyfluorinated esters as the base component, and any two of perfluorinated or polyfluorinated alkanes, perfluorinated or polyfluorinated olefins, perfluorinated or polyfluorinated alcohols, perfluorinated or polyfluorinated ethers, and perfluorinated or polyfluorinated ketones.

[0050] This application enables the fluorinated liquid composition to possess high thermal conductivity, low boiling point, and high insulation properties by using any one or any two of perfluorinated or polyfluoroalkane, perfluorinated or polyfluoroolefin, perfluorinated or polyfluorool, perfluorinated or polyfluoroether, and perfluorinated or polyfluoroketone in combination with perfluorinated or polyfluoroester to form an azeotrope or azeotrope.

[0051] As an example, the above-mentioned "binary fluorinated liquid organic compound" scheme may include:

[0052] Option 1: Perfluorinated or polyfluorinated esters and perfluorinated or polyfluorinated alkanes;

[0053] Option 2: Perfluorinated or polyfluorinated esters and perfluorinated or polyfluorinated olefins;

[0054] Option 3: Perfluorinated or polyfluorinated esters and perfluorinated or polyfluorinated alcohols;

[0055] Option 4: Perfluorinated or polyfluorinated esters and perfluorinated or polyfluorinated ethers;

[0056] Option 5: Perfluorinated or polyfluorinated esters and perfluorinated or polyfluorinated ketones.

[0057] The aforementioned scheme for "ternary fluorinated liquid organic compounds" may include:

[0058] Option 1: Perfluorinated or polyfluorinated esters, perfluorinated or polyfluorinated alkanes and perfluorinated or polyfluorinated olefins;

[0059] Option 2: Perfluorinated or polyfluorinated esters, perfluorinated or polyfluorinated alkanes, and perfluorinated or polyfluorinated alcohols;

[0060] Option 3: Perfluorinated or polyfluorinated esters, perfluorinated or polyfluorinated alkanes and perfluorinated or polyfluorinated ethers;

[0061] Option 4: Perfluorinated or polyfluorinated esters, perfluorinated or polyfluorinated alkanes and perfluorinated or polyfluorinated ketones;

[0062] Option 5: Perfluorinated or polyfluorinated esters, perfluorinated or polyfluorinated olefins, and perfluorinated or polyfluorinated alcohols;

[0063] Option 6: Perfluorinated or polyfluorinated esters, perfluorinated or polyfluorinated olefins, and perfluorinated or polyfluorinated ethers;

[0064] Option 7: Perfluorinated or polyfluorinated esters, perfluorinated or polyfluorinated olefins, and perfluorinated or polyfluorinated ketones;

[0065] Option 8: Perfluorinated or polyfluorinated esters, perfluorinated or polyfluorinated alcohols, and perfluorinated or polyfluorinated ethers;

[0066] Option 9: Perfluorinated or polyfluorinated esters, perfluorinated or polyfluorinated alcohols, and perfluorinated or polyfluorinated ketones;

[0067] Option 10: Perfluorinated or polyfluorinated esters, perfluorinated or polyfluorinated ethers, and perfluorinated or polyfluorinated ketones.

[0068] In this application, "high thermal conductivity" of the fluorinated liquid composition means that the thermal conductivity of the fluorinated liquid composition, as measured by the transient hot wire method according to ASTM D7896 standard, is ≥0.08 W / (m·K).

[0069] The term "low boiling point" for a fluorinated liquid composition refers to a boiling point of 30-80°C under standard atmospheric pressure.

[0070] This fluorinated liquid composition also has high insulation properties; specifically, according to GB / T1409-2006, its dielectric constant is ≤5 at approximately 1 kHz.

[0071] In this application, the boiling point difference between the component with the highest boiling point and the component with the lowest boiling point in the fluorinated liquid composition does not exceed approximately 30°C. That is, the boiling point difference between the two components in a binary fluorinated liquid organic compound does not exceed approximately 30°C, and the boiling point difference between the component with the highest boiling point and the component with the lowest boiling point in a ternary fluorinated liquid organic compound also does not exceed approximately 30°C. This configuration allows for smaller differences between components, making it easier to obtain a stable fluorinated liquid composition with high thermal conductivity and good insulation.

[0072] In some implementations, the aforementioned perfluorinated or polyfluorinated esters may be exemplary selected from methyl trifluoropyruvate (CF3-CO-CO-O-CH3), ethyl pentafluoropropionate (CF3-CF2-CO-O-CH2CH3), ethyl trifluoropyruvate (CF3-CO-CO-O-CH2CH3), 2,2,2-trifluoroethyl carbamate (CF3-CH2-O-CO-H), trifluoroethanol acetate (CH3COOCH2CF3), and trifluoroethanol trifluoroacetate (CF3COOCH2CF3). The following is an example of methyl pentafluoropropionate (CF3-CF2-CO-O-CH3), methyl heptafluorobutyrate (CF3CF2CF2-CO-O-CH3), methyl heptafluoroisobutyrate (CF3CFCF3-CO-O-CH3), isopropyl trifluoroacetate (CF3-CO-O-CHCH3CH3), ethyl trifluoroacetate (CF3CO-O-CH2CH3), methyl trifluoroacetate (CF3CO-OCH3), and hexafluoroisopropyl acetate (CH3-CO-OCH(CF3)2).

[0073] By combining the above-mentioned perfluorinated or polyfluorinated esters with different properties with other fluorinated organic liquid compounds, azeotropes or azeotropic-like compositions can be obtained, which can better adjust the boiling point of the fluorinated liquid-immersion cooling medium.

[0074] For example, the perfluorinated or polyfluorinated ester is selected from 2,2,2-trifluoroethyl carbamate, hexafluoroisopropyl acetate, ethyl trifluoroacetate, or methyl trifluoroacetate. Based on this, it can be further combined with other polyfluorinated or perfluorinated organic compounds to form binary or ternary azeotropic or azeotropic-like compositions.

[0075] Choosing the above-mentioned perfluorinated or polyfluorinated esters is beneficial for obtaining azeotropes or azeotropic-like compositions with lower boiling points, higher thermal conductivity, and better insulation.

[0076] In some implementations, the aforementioned perfluorinated or polyfluorinated alkane may be exemplary selected from perfluorinated (methylcyclohexane) (C6F... 11 -CF3), perfluoro-2-methylpentane (CF3-CF2-CF2CF(CF3)2), 1H-perfluorohexane (CF3(CF2)4-CHCF2), perfluoron-pentane (CF3(CF2)3CF3), 1H-perfluoropentane (CF3(CF2)3CHF2), perfluoro1,2-dimethylcyclobutane (C4F6-(CF3)2), perfluorokerosene (low boiling point, boiling point ≤90℃), perfluorohexane (CF3(CF2)4CF3), hexafluorobenzene (C6F6), hexadecylfluoroheptane (CF3(CF2)5CF3), 2H,3H-decafluoropentane (CF3CHFCHFCF2CF3), and any one of 1,1,2,2,3,3,4,4,5-nonafluorocyclopentane (C5HF9).

[0077] Choosing the above-mentioned perfluorinated or polyfluorinated alkanes is beneficial for obtaining azeotropes or azeotropic-like compositions with lower boiling points, higher thermal conductivity, and better insulation.

[0078] For example, the perfluoro or polyfluoroalkane is selected from perfluoro-2-methylpentane or 2H,3H-decafluoropentane.

[0079] For example, the fluorinated liquid composition comprises hexafluoroisopropyl acetate and perfluoro-2-methylpentane, wherein the mass of hexafluoroisopropyl acetate can be 60.24%-75.19% and the mass of perfluoro-2-methylpentane can be 39.76%-24.81%. Alternatively, the fluorinated liquid composition comprises hexafluoroisopropyl acetate and 2H,3H-decafluoropentane, wherein the mass of hexafluoroisopropyl acetate can be 47.62%-62.50% and the mass of 2H,3H-decafluoropentane can be 52.38%-37.5%.

[0080] By selecting the above-mentioned substances to form a fluorinated liquid composition, an azeotrope or azeotropic composition with low boiling point, high thermal conductivity, and good insulation can be obtained.

[0081] In some implementations, the aforementioned perfluoro or polyfluoroolefins may be exemplary selected from any one of 1H,1H,2H-perfluoro-1-hexene (CF3(CF2)3CH=CH2), 1H-perfluorobut-1-ene (CF3CF2CFH=CF2), octafluorocyclopentene (C5F8), perfluorohept-1-ene (CF3(CF2)4CF=CF2), perfluoro(2-methyl-2-pentene) (hexafluoropropylene dimer: CF3CF2-CF=C(CF3)2), perfluorohex-1-ene (CF3-(CF2)3-CF=CF2), dodecafluoro-1,9-decadiene (CH2=CH-(CF2)6-CH=CH2) and 6H-perfluoro-1-hexene (CF2H-(CF2)3-CF=CF2).

[0082] Choosing the above-mentioned perfluorinated or polyfluorinated olefins is beneficial for obtaining azeotropes or azeotropic-like compositions with lower boiling points, higher thermal conductivity, and better insulation.

[0083] For example, the fluorinated liquid composition comprises hexafluoroisopropyl acetate and perfluoro(2-methyl-2-pentene), wherein the mass of hexafluoroisopropyl acetate can be 67.57%-75.76%, and the mass of perfluoro(2-methyl-2-pentene) can be 24.24%-32.43%. Alternatively, the fluorinated liquid composition comprises methyl pentafluoropropionate and perfluorohex-1-ene, wherein the mass of methyl pentafluoropropionate can be 66.67%-80.00%, and the mass of perfluorohex-1-ene can be 20.00%-33.33%. Alternatively, the fluorinated liquid composition comprises hexafluoroisopropyl acetate, perfluoro-2-methylpentane, and perfluoro(2-methyl-2-pentene), wherein the mass percentage of hexafluoroisopropyl acetate is 50.25%-59.88%, the mass percentage of perfluoro-2-methylpentane is 20.36%-25.13%, and the mass percentage of perfluoro(2-methyl-2-pentene) is 19.76%-24.62%. Alternatively, the fluorinated liquid composition comprises ethyl trifluoroacetate, 1H-perfluoropentane, and perfluoro(2-methyl-2-pentene), wherein the mass percentage of ethyl trifluoroacetate is 26.81%-41.66%, the mass percentage of 1H-perfluoropentane is 16.67%-20.91%, and the mass percentage of perfluoro(2-methyl-2-pentene) is 41.67%-52.28%.

[0084] Choosing the aforementioned perfluorinated or polyfluorinated olefins is advantageous for obtaining azeotropic or azeotropic compositions with low boiling points, high thermal conductivity, and good insulation. In some implementations, the aforementioned perfluorinated or polyfluorinated alcohols may be exemplary selected from any one of perfluorotert-butanol ((CF3)3C-OH), 2,2,2-trifluoroethanol (CF3-CH2-OH), 2,2,3,3,3-pentafluoro-1-propanol (CF3-CF2-CH2-OH), 1,1,1,3,3,3-hexafluoro-2-methyl-2-propanol (CH3-C(CF3)2-OH), 1,1,1,3,3,3-hexafluoro-2-propanol ((CF3)2CH-OH), and 2,2,3,3,4,4,4-heptafluoro-1-butanol (CF3CF2CF2CH2-OH).

[0085] Choosing the above-mentioned perfluorinated or polyfluorinated alcohols is beneficial for obtaining azeotropes or azeotropic-like compositions with lower boiling points, higher thermal conductivity, and better insulation.

[0086] For example, the fluorinated liquid composition comprises hexafluoroisopropyl acetate and perfluorotert-butanol, wherein the mass of hexafluoroisopropyl acetate can be 42.74%-51.55% and the mass of perfluorotert-butanol can be 57.26%-48.45%. Alternatively, the fluorinated liquid composition comprises methyl trifluoroacetate and perfluorotert-butanol, wherein the mass of methyl trifluoroacetate can be 56.18%-71.43% and the mass of perfluorotert-butanol can be 43.82%-28.57%. Alternatively, the fluorinated liquid composition comprises hexafluoroisopropyl acetate, perfluoro-2-methylpentane, and perfluorotert-butanol, wherein the mass of hexafluoroisopropyl acetate can be 40.65%-52.63%, the mass of perfluoro-2-methylpentane can be 16.67%-13.16%, and the mass of perfluorotert-butanol can be 42.68%-34.21%. Alternatively, the fluorinated liquid composition consists of hexafluoroisopropyl acetate, perfluoro(2-methyl-2-pentene), and perfluorotert-butanol, wherein the mass of hexafluoroisopropyl acetate can be 44.66%-58.8%, the mass of perfluoro(2-methyl-2-pentene) can be 16.70%-11.77%, and the mass of perfluorotert-butanol can be 38.64%-29.43%.

[0087] By selecting the above-mentioned substances to form a fluorinated liquid composition, an azeotrope or azeotropic composition with low boiling point, high thermal conductivity, and good insulation can be obtained.

[0088] In some implementations, the aforementioned perfluoro or polyfluoroethers may be exemplary selected from perfluorobutyl methyl ether (CF3(CF2)3-O-CH3), perfluoroisobutyl methyl ether (CF(CF3)2-CF2-O-CH3), bis(2,2,2-trifluoroethyl) ether (CF3CH2-O-CH2-CF3), fluoromethyl-1,1,1,3,3,3-hexafluoroisopropyl ether ((CF3)2-CH-O-CH2F), 2,2,2-trifluoroethyl methyl ether (CF3CH2-O-CH3), and 2,2,3,3,3-pentafluoropropyl methyl ether (CF3CF2CH2-O-). CH3), heptafluoropropyl 1,2,2,2-tetrafluoroethyl ether (CF3CF2CF2-O-CFH-CF3), difluoromethyl 2,2,3,3-tetrafluoropropyl ether (CF2H-CF2-CH2-O-CF2H), heptafluoroisopropylmethyl ether ((CF3)2CFH-O-CH3), bis-(1,2,2,2-tetrafluoroethyl) ether (CF3-CFH-O-CFH-CF3), 1,1,2,2-tetrafluoroethyl ether (CF2H-CF2-O-CH2CH3), ethyl 1,1,2,3,3,3-hexafluoropropyl ether (CF3-CFH-CF 2- Any one of the following: O-CH2CH3), methyl 2,2,3,3,3-pentafluoropropyl ether (CF3CF2CH2-O-CH3), allyl heptafluoroisopropyl ether ((CF3)2-CFH-O-CH2CH=CH2), 1,1,2,2-tetrafluoroethyl 2,2,3,3-tetrafluoropropyl ether (CF2H-CF2-O-CH2-CF2-CF2H), 1,1,2,3,3,3-hexafluoropropyl methyl ether (CF3-CHF-CF2-O-CH3), and 1,1,2,2-tetrafluoroethyl methyl ether (CF2H-CF2-O-CH3).

[0089] Choosing the above-mentioned perfluorinated or polyfluorinated ethers is beneficial for obtaining azeotropes or azeotropic-like compositions with lower boiling points, higher thermal conductivity, and better insulation.

[0090] For example, the fluorinated liquid composition comprises hexafluoroisopropyl acetate and fluoromethyl-1,1,1,3,3,3-hexafluoroisopropyl ether, wherein the mass of hexafluoroisopropyl acetate can be 51.55%-69.44%, and the mass of fluoromethyl-1,1,1,3,3,3-hexafluoroisopropyl ether can be 48.45%-30.56%. Alternatively, the fluorinated liquid composition comprises methyl trifluoroacetate and 1,1,2,3,3,3-hexafluoropropyl methyl ether, wherein the mass of methyl trifluoroacetate can be 56.18%-67.57%, and the mass of 1,1,2,3,3,3-hexafluoropropyl methyl ether can be 43.82%-32.43%. Alternatively, the fluorinated liquid composition comprises hexafluoroisopropyl acetate, perfluoro-2-methylpentane, and methyl 2,2,3,3,3-pentafluoropropyl ether, wherein the mass of hexafluoroisopropyl acetate can be 36.37%-48.79%, the mass of perfluoro-2-methylpentane can be 18.18%-14.63%, and the mass of methyl 2,2,3,3,3-pentafluoropropyl ether can be 45.45%-36.58%. Alternatively, the fluorinated liquid composition comprises hexafluoroisopropyl acetate, perfluoro(2-methyl-2-pentene), and methyl 2,2,3,3,3-pentafluoropropyl ether, wherein the mass of hexafluoroisopropyl acetate can be 42.92%-61.35%, the mass of perfluoro(2-methyl-2-pentene) can be 40.77%-27.61%, and the mass of 2,2,3,3,3-pentafluoropropyl methyl ether can be 16.31%-11.04%. Alternatively, the fluorinated liquid composition comprises ethyl trifluoroacetate, 1,1,1,3,3,3-hexafluoro-2-propanol, and heptafluoropropyl 1,2,2,2-tetrafluoroethyl ether, wherein the mass of ethyl trifluoroacetate can be 42.92%-56.5%, the mass of 1,1,1,3,3,3-hexafluoro-2-propanol can be 16.31%-12.43%, and the mass of heptafluoropropyl 1,2,2,2-tetrafluoroethyl ether can be 40.77%-31.07%.

[0091] By selecting the above-mentioned substances to form a fluorinated liquid composition, an azeotrope or azeotropic composition with low boiling point, high thermal conductivity, and good insulation can be obtained.

[0092] In some implementations, the aforementioned perfluoro or polyfluoroketones may be exemplary selected from methyl perfluorobutyl ketone (CF3-(CF2)3-CO-CH3), 3H-perfluoropentane-2,4-dione (CF3-CO-CHF-CO-CF3), 1,1,1,2,2,4,5,5,5-nonafluoro-4-(trifluoromethyl)-3-pentanone ((CF2)3-dione), etc. 3)2Any one of -CF-CO-CF2CF3), methyl pentafluoroethyl ketone (CF3CF2-CO-CH3), methyl heptafluoropropyl ketone (CF3CF2CF2-CO-CH3), and methyl decafluoroheptyl ketone (CF3(CF2)6-CO-CH3).

[0093] Choosing the above-mentioned perfluorinated or polyfluoroketones is beneficial for obtaining azeotropes or azeotropic-like compositions with lower boiling points, higher thermal conductivity, and better insulation.

[0094] For example, the fluorinated liquid composition comprises hexafluoroisopropyl acetate and 1,1,1,2,2,4,5,5,5-nonafluoro-4-(trifluoromethyl)-3-pentanone, wherein the mass of hexafluoroisopropyl acetate may be 54.95%-65.79%, and the mass of 1,1,1,2,2,4,5,5,5-nonafluoro-4-(trifluoromethyl)-3-pentanone may be 45.05%-34.21%. Alternatively, the fluorinated liquid composition comprises methyl trifluoroacetate and perfluorohexanone, wherein the mass of methyl trifluoroacetate may be 57.41%-78.13%, and the mass of perfluorohexanone may be 42.59%-21.87%. Alternatively, the fluorinated liquid composition comprises hexafluoroisopropyl acetate, 2H,3H-decafluoropentane, and perfluorohexanone, wherein the mass of hexafluoroisopropyl acetate can be 27.49%-52.35%, the mass of 2H,3H-decafluoropentane can be 31.9%-19.05%, and the mass of perfluorohexanone can be 40.61%-28.60%. Alternatively, the fluorinated liquid composition comprises 2,2,2-trifluoroethyl carbamate, perfluorohex-1-ene, and methylpentadecafluoroheptyl ketone, wherein the mass of 2,2,2-trifluoroethyl carbamate can be 42.92%-70.42%, the mass of perfluorohex-1-ene can be 15.88%-7.75%, and the mass of methylpentadecafluoroheptyl ketone can be 41.20%-21.83%. Alternatively, the fluorinated liquid composition comprises methyl trifluoroacetate, perfluorotert-butanol, and methyl pentafluoroethyl ketone, wherein the mass percentage of methyl trifluoroacetate can be 38.32%-67.12%, the mass percentage of perfluorotert-butanol can be 44.06%-23.49%, and the mass percentage of methyl pentafluoroethyl ketone can be 17.62%-9.39%. Alternatively, the fluorinated liquid composition comprises hexafluoroisopropyl acetate, heptafluoroisopropyl methyl ether, and methyl pentadecylfluoroheptyl ketone, wherein the mass percentage of hexafluoroisopropyl acetate can be 39.69%-53.19%, the mass percentage of heptafluoroisopropyl methyl ether can be 22.62%-17.55%, and the mass percentage of methyl pentadecylfluoroheptyl ketone can be 37.69%-29.26%.

[0095] By selecting the above-mentioned substances to form a fluorinated liquid composition, an azeotrope or azeotropic composition with low boiling point, high thermal conductivity, and good insulation can be obtained.

[0096] As mentioned above, the thermal conductivity of commercially available fluorinated liquids is generally <0.08 W / (m·K). The fluorinated liquid composition provided in this application has a thermal conductivity ≥0.08 W / (m·K) and good insulation properties, improving upon the generally low thermal conductivity of common commercially available fluorinated liquids and expanding the variety of immersion cooling media. Furthermore, this application selects fluorinated esters with different properties and mixes them with other fluorinated organic liquid compounds to obtain azeotropic or azeotropic-like compositions. It can also effectively adjust the boiling point of the fluorinated liquid-immersion cooling media, achieving a boiling point range of 30℃-80℃ under standard atmospheric pressure. For reference, the preparation process of the above-mentioned fluorinated liquid composition employs continuous temperature tracking and recording, which can quickly determine the azeotropic point of binary or ternary mixtures. For binary azeotropes or azeotropic-like compositions, a three-necked flask is used. One flask is connected to a reflux condenser, another to a pulse drop pump, and the third to a temperature recorder. This system is placed in an external isothermal system, where the temperature is higher than the boiling point of either of the binary components. The temperature change curve of the fluorinated liquid composition is monitored. When the temperature reaches a point lower than the boiling point of either of the binary components, the pulse drop is stopped. The resulting composition is the azeotrope or azeotropic-like composition. For ternary azeotropes or azeotropic-like compositions, a four-necked flask is used. One flask is connected to a reflux condenser, another to a temperature recorder, and the other two flasks are connected to two pulse drop pumps. This system is placed in an external isothermal system, where the temperature is higher than the boiling point of either of the ternary components. The temperature change curve of the fluorinated liquid composition is monitored. When the temperature reaches a point lower than the boiling point of either of the ternary components, the pulse drop is stopped. The resulting composition is the azeotrope or azeotropic-like composition.

[0097] Accordingly, this application also provides the use of the above-described fluorinated liquid composition in the preparation of a cooling medium. This cooling medium can be, exemplarily, an immersion cooling medium, such as a coolant.

[0098] For reference, the fluorinated liquid composition provided in this application can be two-phase when used as an immersion cooling medium. It has a high latent heat of vaporization and can quickly and efficiently remove heat from the heat source during the evaporation and vaporization process, resulting in excellent heat dissipation and cooling effect.

[0099] like Figure 1 As shown, the above-mentioned fluorinated liquid composition can be added to the closed system of the server. Through vaporization phase change heat absorption, it carries away the heat generated during the operation of the server. The vaporized fluorinated liquid gas comes into contact with the heat exchange system and is then reliquefied and flows back to the server's cooling system.

[0100] The aforementioned cooling medium can be used, for example, in liquid cooling systems for electronic devices. These liquid cooling systems may include, for example, chip heat dissipation systems, server heat dissipation systems, supercomputing data center heat dissipation systems, or new energy vehicle thermal management systems.

[0101] In addition, this application also provides a liquid cooling system, which includes electronic equipment and a liquid cooling working fluid prepared from the above-described fluorinated liquid composition, wherein the electronic equipment is exemplaryly immersable in the liquid cooling working fluid.

[0102] The features and performance of this application will be further described in detail below with reference to the embodiments.

[0103] Example 1

[0104] This embodiment provides a fluorinated liquid composition, which is a binary fluorinated liquid organic compound composed of a perfluorinated or polyfluorinated ester and a perfluorinated or polyfluorinated alkane.

[0105] Specifically, in this embodiment, a combination of hexafluoroisopropyl acetate (CH3-CO-O-CH(CF3)2) and perfluoro-2-methylpentane (CF3CF2CF2CF-(CF3)2) is used to create an azeotrope or azeotropic composition.

[0106] 100g of hexafluoroisopropyl acetate was weighed and placed in a three-necked flask. The flask was heated by a water bath at 80℃. One of the three necks of the flask was connected to a reflux condenser, another to a metering peristaltic pump, and the third to a multi-channel temperature monitor. A tetrafluoroethylene magnetic stirrer was added to the flask to magnetically stir the liquid inside, forming a boiling point testing device. Perfluoro-2-methylpentane was slowly added dropwise in a pulsed manner using the metering peristaltic pump (e.g., adding liquid for 1 minute, stopping for 10 minutes, and then adding liquid again for 1 minute). The temperature change of the mixture in the three-necked flask was monitored by the multi-channel temperature monitor to determine whether the mixture had reached an azeotropic or near-azeotropic state.

[0107] When the mass fraction of hexafluoroisopropyl acetate is 60.24%-75.19% of the mixture and the mass fraction of perfluoro-2-methylpentane is 39.76%-24.81% of the mixture, the boiling point temperature measurements in Table 1 show that, within a certain range, the mixture has formed an azeotrope or azeotropic composition with the lowest boiling point.

[0108] Table 1. Measured Boiling Point Temperatures

[0109] Hexafluoroisopropyl acetate, % Perfluoro-2-methylpentane, % Boiling point temperature, °C 100.00 0.00 70.3 97.09 2.91 69.5 94.34 5.66 68.8 91.74 8.26 66.7 86.96 13.04 64.1 80.64 19.36 61.1 78.74 21.26 58.7 76.92 23.08 57.4 75.19 24.81 55.7 73.53 26.47 52.5 70.42 29.58 53.1 68.97 31.03 52.8 64.94 35.06 54.4 60.24 39.76 55.6 58.14 41.86 58.4 56.18 43.82 58.8 54.35 45.65 59.3 52.63 47.37 60.3 48.78 51.22 60.1 45.45 54.54 58.9 43.67 56.33 59.7

[0110] Take a mixture of hexafluoroisopropyl acetate (60.24%-75.19% by mass) and perfluoro-2-methylpentane (39.76%-24.81% by mass) and measure and record the thermal conductivity (maximum value: 0.115 W / m·K) and dielectric constant (maximum value: 3.9245) of the mixture.

[0111] Example 2

[0112] This embodiment provides a fluorinated liquid composition, which is a binary fluorinated liquid organic compound composed of a perfluorinated or polyfluorinated ester and a perfluorinated or polyfluorinated alkane.

[0113] Specifically, in this embodiment, a combination of hexafluoroisopropyl acetate (CH3-CO-O-CH(CF3)2) and 2H,3H-decafluoropentane (CF3CHFCHFCF2CF3) is used to create an azeotrope or azeotropic composition.

[0114] The same method as in Example 1 was used to determine whether the mixture had reached an azeotropic or near-azeotropic state. When the mass of hexafluoroisopropyl acetate accounted for 47.62%-62.50% of the mass fraction of the mixture, and the mass of 2H,3H-decafluoropentane accounted for 52.38%-37.5% of the mass fraction of the mixture, the boiling point temperature measurements in Table 2 showed that, within a certain range, the mixture had formed an azeotrope or near-azeotropic composition with the lowest boiling point.

[0115] Table 2 Boiling point temperature measurements

[0116]

[0117]

[0118] Take a mixture of hexafluoroisopropyl acetate (47.62%-62.50% by mass) and 2H,3H-decafluoropentane (52.38%-37.5% by mass), measure the thermal conductivity (maximum value: 0.097 W / m·K) and dielectric constant of the mixture and record the data (maximum value: 3.7734).

[0119] Example 3

[0120] This embodiment provides a fluorinated liquid composition, which is a binary fluorinated liquid organic compound composed of a perfluorinated or polyfluorinated ester and a perfluorinated or polyfluorinated olefin.

[0121] Specifically, in this embodiment, a combination of hexafluoroisopropyl acetate (CH3-CO-O-CH(CF3)2) and perfluoro(2-methyl-2-pentene) (hexafluoropropylene dimer: CF3CF2-CF=C(CF3)2) is used to create an azeotrope or azeotropic composition.

[0122] The same method as in Example 1 was used to determine whether the mixture had reached an azeotropic or near-azeotropic state. When the mass of hexafluoroisopropyl acetate accounted for 67.57%-75.76% of the mass fraction of the mixture, and the mass of perfluorinated (2-methyl-2-pentene) accounted for 24.24%-32.43% of the mass fraction of the mixture, the boiling point temperature measurements in Table 3 showed that, within a certain range, the mixture had formed an azeotrope or near-azeotropic composition with the lowest boiling point.

[0123] Table 3 Boiling point temperature measurements

[0124]

[0125]

[0126] Take a mixture in which hexafluoroisopropyl acetate accounts for 67.57%-75.76% of the mass fraction of the mixture and perfluorinated (2-methyl-2-pentene) accounts for 24.24%-32.43% of the mass fraction of the mixture. Measure the thermal conductivity (maximum value: 0.107 W / m·K) and dielectric constant of the mixture and record the data (maximum value: 2.9237).

[0127] Example 4

[0128] This embodiment provides a fluorinated liquid composition, which is a binary fluorinated liquid organic compound composed of a perfluorinated or polyfluorinated ester and a perfluorinated or polyfluorinated olefin.

[0129] Specifically, in this embodiment, methyl pentafluoropropionate (CF3-CF2-CO-O-CH3) and perfluorohex-1-ene (CF3-CF2CF2CF2-CF=CF2) are used to mix an azeotrope or a near-azeotropic composition.

[0130] The same method as in Example 1 was used to determine whether the mixture had reached an azeotropic or near-azeotropic state. When the mass of methyl pentafluoropropionate accounted for 66.67%-80.00% of the mass fraction of the mixture, and the mass of perfluorohex-1-ene accounted for 20.00%-33.33% of the mass fraction of the mixture, the boiling point temperature measurements in Table 4 showed that, within a certain range, the mixture had formed an azeotrope or near-azeotropic composition with the lowest boiling point.

[0131] Table 4 Boiling point temperature measurements

[0132]

[0133]

[0134] Take a mixture in which methyl pentafluoropropionate accounts for 66.67%-80.00% of the mass fraction of the mixture and perfluorohex-1-ene accounts for 20.00%-33.33% of the mass fraction of the mixture. Measure the thermal conductivity (maximum value: 0.117 W / m·K) and dielectric constant of the mixture and record the data (maximum value: 2.7769).

[0135] Example 5

[0136] This embodiment provides a fluorinated liquid composition, which is a ternary fluorinated liquid organic compound composed of perfluorinated or polyfluorinated esters, perfluorinated or polyfluorinated alkanes and perfluorinated or polyfluorinated olefins.

[0137] Specifically, in this embodiment, a combination of hexafluoroisopropyl acetate (CH3-CO-O-CH(CF3)2), perfluoro-2-methylpentane (CF3CF2CF2CF-(CF3)2), and perfluoro(2-methyl-2-pentene) (hexafluoropropylene dimer: CF3CF2-CF=C(CF3)2) is used to create an azeotrope or azeotropic composition.

[0138] 100g of hexafluoroisopropyl acetate was weighed and placed in a four-necked flask. The flask was heated by a water bath at 80℃. One of the four flasks was connected to a reflux condenser, two flasks were connected to two metering peristaltic pumps, and the last flask was connected to a multi-channel temperature monitor. A tetrafluoroethylene magnetic stirrer was added to the flask to magnetically stir the liquid inside, forming a boiling point testing device. Perfluoro-2-methylpentane and perfluoro(2-methyl-2-pentene) liquid were slowly added dropwise in a pulsed manner using the metering peristaltic pumps (e.g., adding liquid for 1 minute, stopping for 10 minutes, and then adding liquid again for 1 minute). The temperature change of the mixture in the three-necked flask was monitored by the multi-channel temperature monitor to determine whether the mixture had reached an azeotropic or near-azeotropic state. When the mass of hexafluoroisopropyl acetate accounts for 50.25%-59.88% of the mass fraction of the mixture, the mass of perfluoro-2-methylpentane accounts for 20.36%-25.13% of the mass fraction of the mixture, and the mass of perfluoro(2-methyl-2-pentene) accounts for 19.76%-24.62% of the mass fraction of the mixture, the boiling point temperature measurements in Table 5 indicate that, within a certain range, the mixture has formed an azeotrope or azeotropic composition with the lowest boiling point.

[0139] Table 5 Boiling point temperature measurements

[0140]

[0141]

[0142]

[0143] Take a mixture in which hexafluoroisopropyl acetate accounts for 50.25%-59.88% of the total mass of the mixture, perfluoro-2-methylpentane accounts for 20.36%-25.13% of the total mass of the mixture, and perfluoro(2-methyl-2-pentene) accounts for 19.76%-24.62% of the total mass of the mixture. Measure the thermal conductivity (maximum value: 0.101 W / m·K) and dielectric constant of the mixture and record the data (maximum value: 3.1768).

[0144] Example 6

[0145] This embodiment provides a fluorinated liquid composition, which is a ternary fluorinated liquid organic compound composed of perfluorinated or polyfluorinated esters, perfluorinated or polyfluorinated alkanes and perfluorinated or polyfluorinated olefins.

[0146] Specifically, in this embodiment, ethyl trifluoroacetate (CF3-CO-O-CH2CH3), 1H-perfluoropentane (CF3(CF2)3CHF2) and perfluoro(2-methyl-2-pentene) (hexafluoropropylene dimer: CF3CF2-CF=C(CF3)2) are used to mix an azeotrope or a quasi-azeotropic composition.

[0147] The same method as in Example 5 was used to determine whether the mixture had reached an azeotropic or near-azeotropic state. When the mass of ethyl trifluoroacetate accounted for 26.81%-41.66% of the mass fraction of the mixture, the mass of 1H-perfluoropentane accounted for 16.67%-20.91% of the mass fraction of the mixture, and the mass of perfluorinated (2-methyl-2-pentene) accounted for 41.67%-52.28% of the mass fraction of the mixture, the boiling point temperature measurements in Table 6 showed that, within a certain range, the mixture had formed an azeotrope or near-azeotropic composition with the lowest boiling point.

[0148] Table 6 Boiling point temperature measurements

[0149]

[0150]

[0151]

[0152] Take a mixture in which ethyl trifluoroacetate accounts for 26.81%-41.66% of the mass fraction of the mixture, 1H-perfluoropentane accounts for 16.67%-20.91% of the mass fraction of the mixture, and perfluorinated (2-methyl-2-pentene) accounts for 41.67%-52.28% of the mass fraction of the mixture. Measure the thermal conductivity (maximum value: 0.080 W / mK) and dielectric constant of the mixture and record the data (maximum value: 2.4738).

[0153] Example 7

[0154] This embodiment provides a fluorinated liquid composition, which is a binary fluorinated liquid organic compound composed of a perfluorinated or polyfluorinated ester and a perfluorinated or polyfluorinated alcohol.

[0155] Specifically, in this embodiment, a combination of hexafluoroisopropyl acetate (CH3-CO-O-CH(CF3)2) and perfluorotert-butanol ((CF3)3C-OH) is used to create an azeotrope or azeotropic composition.

[0156] The same method as in Example 1 was used to determine whether the mixture had reached an azeotropic or near-azeotropic state. When the mass of hexafluoroisopropyl acetate accounted for 42.74%-51.55% of the mass fraction of the mixture, and the mass of perfluorotert-butanol accounted for 57.26%-48.45% of the mass fraction of the mixture, the boiling point temperature measurements in Table 7 showed that, within a certain range, the mixture had formed an azeotrope or near-azeotropic composition with the lowest boiling point.

[0157] Table 7 Boiling Point Temperature Measurements

[0158]

[0159]

[0160]

[0161] Take a mixture in which hexafluoroisopropyl acetate accounts for 42.74%-51.55% of the mass fraction of the mixture and perfluorotert-butanol accounts for 57.26%-48.45% of the mass fraction of the mixture. Measure the thermal conductivity (maximum value: 0.117 W / m·K) and dielectric constant of the mixture and record the data (maximum value: 3.6237).

[0162] Example 8

[0163] This embodiment provides a fluorinated liquid composition, which is a binary fluorinated liquid organic compound composed of a perfluorinated or polyfluorinated ester and a perfluorinated or polyfluorinated alcohol.

[0164] Specifically, in this embodiment, methyl trifluoroacetate (CF3-CO-O-CH3) and perfluorotert-butanol ((CF3)3C-OH) are used to create an azeotrope or azeotropic composition.

[0165] The same method as in Example 1 was used to determine whether the mixture had reached an azeotropic or near-azeotropic state. When the mass of methyl trifluoroacetate accounted for 56.18%-71.43% of the mass fraction of the mixture, and the mass of perfluorotert-butanol accounted for 43.82%-28.57% of the mass fraction of the mixture, the boiling point temperature measurements in Table 8 showed that, within a certain range, the mixture had formed an azeotrope or near-azeotropic composition with the lowest boiling point.

[0166] Table 8 Boiling Point Temperature Measurements

[0167]

[0168]

[0169] Take a mixture in which methyl trifluoroacetate accounts for 56.18%-71.43% of the mass fraction of the mixture and perfluorotert-butanol accounts for 43.82%-28.57% of the mass fraction of the mixture. Measure the thermal conductivity (maximum value: 0.122 W / m·K) and dielectric constant of the mixture and record the data (maximum value: 4.3235).

[0170] Example 9

[0171] This embodiment provides a fluorinated liquid composition, which is a ternary fluorinated liquid organic compound composed of a perfluorinated or polyfluorinated ester, a perfluorinated or polyfluorinated alkane, and a perfluorinated or polyfluorinated alcohol.

[0172] Specifically, in this embodiment, a combination of hexafluoroisopropyl acetate (CH3-CO-O-CH(CF3)2), perfluoro-2-methylpentane (CF3-CF2-CF2CF(CF3)2), and perfluorotert-butanol ((CF3)3C-OH) is used to create an azeotrope or azeotropic composition.

[0173] The same method as in Example 5 was used to determine whether the mixture had reached an azeotropic or near-azeotropic state. When the mass of hexafluoroisopropyl acetate accounted for 40.65%-52.63% of the mixture's mass fraction, the mass of perfluoro-2-methylpentane accounted for 16.67%-13.16% of the mixture's mass fraction, and the mass of perfluorotert-butanol accounted for 42.68%-34.21% of the mixture's mass fraction, the boiling point temperature measurements in Table 9 showed that, within a certain range, the mixture had formed an azeotrope or near-azeotropic composition with the lowest boiling point.

[0174] Table 9 Boiling Point Temperature Measurements

[0175]

[0176]

[0177] Take a mixture in which hexafluoroisopropyl acetate accounts for 40.65%-52.63% of the total mass of the mixture, perfluoro-2-methylpentane accounts for 16.67%-13.16% of the total mass of the mixture, and perfluorotert-butanol accounts for 42.68%-34.21% of the total mass of the mixture. Measure the thermal conductivity (maximum value: 0.128 W / m·K) and dielectric constant of the mixture and record the data (maximum value: 3.2736).

[0178] Example 10

[0179] This embodiment provides a fluorinated liquid composition, which is a binary fluorinated liquid organic compound composed of a perfluorinated or polyfluorinated ester and a perfluorinated or polyfluorinated ether.

[0180] Specifically, in this embodiment, a combination of hexafluoroisopropyl acetate (CH3-CO-O-CH(CF3)2) and fluoromethyl-1,1,1,3,3,3-hexafluoroisopropyl ether ((CF3)2CH-O-CH2F) is used to create an azeotrope or azeotropic composition.

[0181] The same method as in Example 1 was used to determine whether the mixture had reached an azeotropic or near-azeotropic state. When the mass of hexafluoroisopropyl acetate accounted for 51.55%-69.44% of the mass fraction of the mixture, and the mass of fluoromethyl-1,1,1,3,3,3-hexafluoroisopropyl ether accounted for 48.45%-30.56% of the mass fraction of the mixture, the boiling point temperature measurements in Table 10 showed that, within a certain range, the mixture had formed an azeotrope or near-azeotropic composition with the lowest boiling point.

[0182] Table 10 Boiling Point Temperature Measurements

[0183]

[0184]

[0185]

[0186] Take a mixture in which hexafluoroisopropyl acetate accounts for 51.55%-69.44% of the total mass of the mixture, and fluoromethyl-1,1,1,3,3,3-hexafluoroisopropyl ether accounts for 48.45%-30.56% of the total mass of the mixture. Measure the thermal conductivity (maximum value: 0.115 W / m·K) and dielectric constant of the mixture and record the data (maximum value: 3.2234).

[0187] Example 11

[0188] This embodiment provides a fluorinated liquid composition, which is a binary fluorinated liquid organic compound composed of a perfluorinated or polyfluorinated ester and a perfluorinated or polyfluorinated ether.

[0189] Specifically, in this embodiment, methyl trifluoroacetate (CF3-CO-O-CH3) and 1,1,2,3,3,3-hexafluoropropyl methyl ether (CF3-CHF-CF2-O-CH3) are used to mix an azeotrope or a near-azeotropic composition.

[0190] The same method as in Example 1 was used to determine whether the mixture had reached an azeotropic or near-azeotropic state. When the mass of methyl trifluoroacetate accounted for 56.18%-67.57% of the mass fraction of the mixture, and the mass of 1,1,2,3,3,3-hexafluoropropyl methyl ether accounted for 43.82%-32.43% of the mass fraction of the mixture, the boiling point temperature measurements in Table 11 showed that, within a certain range, the mixture had formed an azeotrope or near-azeotropic composition with the lowest boiling point.

[0191] Table 11 Boiling point temperature measurements

[0192]

[0193]

[0194] Take a mixture in which methyl trifluoroacetate accounts for 56.18%-67.57% of the mass fraction of the mixture and 1,1,2,3,3,3-hexafluoropropyl methyl ether accounts for 43.82%-32.43% of the mass fraction of the mixture. Measure the thermal conductivity (maximum value: 0.112 W / mK) and dielectric constant of the mixture and record the data (maximum value: 4.1150).

[0195] Example 12

[0196] This embodiment provides a fluorinated liquid composition, which is a ternary fluorinated liquid organic compound composed of perfluorinated or polyfluorinated esters, perfluorinated or polyfluorinated alkanes and perfluorinated or polyfluorinated ethers.

[0197] Specifically, in this embodiment, an azeotrope or azeotropic composition is prepared by mixing hexafluoroisopropyl acetate (CH3-CO-O-CH(CF3)2), perfluoro-2-methylpentane (CF3-CF2-CF2CF(CF3)2), and methyl 2,2,3,3,3-pentafluoropropyl ether (CF3CF2CH2-O-CH3).

[0198] The same method as in Example 5 was used to determine whether the mixture had reached an azeotropic or near-azeotropic state. When the mass fraction of hexafluoroisopropyl acetate was 36.37%-48.79%, the mass fraction of perfluoro-2-methylpentane was 18.18%-14.63%, and the mass fraction of methyl 2,2,3,3,3-pentafluoropropyl ether was 45.45%-36.58%, the boiling point temperature measurements in Table 12 showed that, within a certain range, the mixture had formed an azeotrope or near-azeotropic composition with the lowest boiling point.

[0199] Table 12 Boiling Point Temperature Measurements

[0200]

[0201]

[0202] Take a mixture containing 36.37%–48.79% hexafluoroisopropyl acetate, 18.18%–14.63% perfluoro-2-methylpentane, and 45.45%–36.58% methyl 2,2,3,3,3-pentafluoropropyl ether. Measure and record the thermal conductivity (maximum value: 0.125 W / mK) and dielectric constant of the mixture.

[0203] Example 13

[0204] This embodiment provides a fluorinated liquid composition, which is a binary fluorinated liquid organic compound composed of a perfluorinated or polyfluorinated ester and a perfluorinated or polyfluorinated ketone.

[0205] Specifically, in this embodiment, a combination of hexafluoroisopropyl acetate (CH3-CO-O-CH(CF3)2) and 1,1,1,2,2,4,5,5,5-nonafluoro-4-(trifluoromethyl)-3-pentanone (i.e., perfluorohexanone, (CF3)2-CF-CO-CF2CF3) is used to create an azeotrope or azeotropic composition.

[0206] The same method as in Example 1 was used to determine whether the mixture had reached an azeotropic or near-azeotropic state. When the mass of hexafluoroisopropyl acetate accounted for 54.95%-65.79% of the mass fraction of the mixture, and the mass of 1,1,1,2,2,4,5,5,5-nonafluoro-4-(trifluoromethyl)-3-pentanone accounted for 45.05%-34.21% of the mass fraction of the mixture, the boiling point temperature measurements in Table 13 showed that, within a certain range, the mixture had formed an azeotrope or near-azeotropic composition with the lowest boiling point.

[0207] Table 13 Boiling point temperature measurements

[0208]

[0209]

[0210] Take a mixture in which hexafluoroisopropyl acetate accounts for 54.95%-65.79% of the mass fraction of the mixture, and 1,1,1,2,2,4,5,5,5-nonafluoro-4-(trifluoromethyl)-3-pentanone accounts for 45.05%-34.21% of the mass fraction of the mixture. Measure the thermal conductivity (maximum value: 0.111 W / m·K) and dielectric constant of the mixture and record the data (maximum value: 2.8234).

[0211] Example 14

[0212] This embodiment provides a fluorinated liquid composition, which is a binary fluorinated liquid organic compound composed of a perfluorinated or polyfluorinated ester and a perfluorinated or polyfluorinated ketone.

[0213] Specifically, in this embodiment, methyl trifluoroacetate (CF3-CO-O-CH3) and 1,1,1,2,2,4,5,5,5-nonafluoro-4-(trifluoromethyl)-3-pentanone (i.e., perfluorohexanone, (CF3)2-CF-CO-CF2CF3) are used to mix an azeotrope or a near-azeotropic composition.

[0214] The same method as in Example 1 was used to determine whether the mixture had reached an azeotropic or near-azeotropic state. When the mass of methyl trifluoroacetate accounted for 57.41%-78.13% of the mass fraction of the mixture, and the mass of perfluorohexanone accounted for 42.59%-21.87% of the mass fraction of the mixture, the boiling point temperature measurements in Table 14 showed that, within a certain range, the mixture had formed an azeotrope or near-azeotropic composition with the lowest boiling point.

[0215] Table 14 Boiling Point Temperature Measurements

[0216]

[0217]

[0218] Take a mixture in which methyl trifluoroacetate accounts for 57.41%-78.13% of the mass fraction of the mixture and perfluorohexanone accounts for 42.59%-21.87% of the mass fraction of the mixture, and measure the thermal conductivity (maximum value: 0.101 W / m·K) and dielectric constant of the mixture and record the data (maximum value: 2.8238).

[0219] Example 15

[0220] This embodiment provides a fluorinated liquid composition, which is a ternary fluorinated liquid organic compound composed of perfluorinated or polyfluorinated esters, perfluorinated or polyfluorinated alkanes and perfluorinated or polyfluorinated ketones.

[0221] Specifically, in this embodiment, an azeotrope or azeotropic composition is prepared by mixing hexafluoroisopropyl acetate (CH3-CO-O-CH(CF3)2), 2H,3H-decafluoropentane (CF3CHFCHFCF2CF3), and 1,1,1,2,2,4,5,5,5-nonafluoro-4-(trifluoromethyl)-3-pentanone (i.e., perfluorohexanone, (CF3)2-CF-CO-CF2CF3).

[0222] The same method as in Example 5 was used to determine whether the mixture had reached an azeotropic or near-azeotropic state. When the mass of hexafluoroisopropyl acetate accounted for 27.49%-52.35% of the mixture's mass fraction, the mass of 2H,3H-decafluoropentane accounted for 31.9%-19.05% of the mixture's mass fraction, and the mass of perfluorohexanone accounted for 40.61%-28.60% of the mixture's mass fraction, the boiling point temperature measurements in Table 15 showed that, within a certain range, the mixture had formed an azeotrope or near-azeotropic composition with the lowest boiling point.

[0223] Table 15 Boiling Point Temperature Measurements

[0224]

[0225]

[0226] Take a mixture in which hexafluoroisopropyl acetate accounts for 27.49%-52.35% of the mass fraction of the mixture, 2H,3H-decafluoropentane accounts for 31.9%-19.05% of the mass fraction of the mixture, and perfluorohexanone accounts for 40.61%-28.60% of the mass fraction of the mixture. Measure the thermal conductivity (0.089 W / m·K) and dielectric constant of the mixture and record the data (4.5735).

[0227] Example 16

[0228] This embodiment provides a fluorinated liquid composition, which is a ternary fluorinated liquid organic compound composed of perfluorinated or polyfluorinated esters, perfluorinated or polyfluorinated olefins and perfluorinated or polyfluorinated alcohols.

[0229] Specifically, in this embodiment, an azeotrope or azeotropic composition is prepared by mixing hexafluoroisopropyl acetate (CH3-CO-O-CH(CF3)2), perfluoro(2-methyl-2-pentene) (hexafluoropropylene dimer: CF3CF2-CF=C(CF3)2) and perfluorotert-butanol ((CF3)3C-OH).

[0230] The same method as in Example 5 was used to determine whether the mixture had reached an azeotropic or near-azeotropic state. When the mass of hexafluoroisopropyl acetate accounted for 44.66%-58.8% of the mixture's mass fraction, the mass of perfluoro(2-methyl-2-pentene) accounted for 16.70%-11.77% of the mixture's mass fraction, and the mass of perfluorotert-butanol accounted for 38.64%-29.43% of the mixture's mass fraction, the boiling point temperature measurements in Table 16 showed that, within a certain range, the mixture had formed an azeotrope or near-azeotropic composition with the lowest boiling point.

[0231] Table 16 Boiling Point Temperature Measurements

[0232]

[0233]

[0234] Take a mixture in which hexafluoroisopropyl acetate accounts for 44.66%-58.8% of the total mass of the mixture, perfluoro(2-methyl-2-pentene) accounts for 16.70%-11.77% of the total mass of the mixture, and perfluorotert-butanol accounts for 38.64%-29.43% of the total mass of the mixture. Measure the thermal conductivity (maximum value: 0.115 W / m·K) and dielectric constant of the mixture and record the data (maximum value: 3.8633).

[0235] Example 17

[0236] This embodiment provides a fluorinated liquid composition, which is a ternary fluorinated liquid organic compound composed of perfluorinated or polyfluorinated esters, perfluorinated or polyfluorinated olefins and perfluorinated or polyfluorinated ethers.

[0237] Specifically, in this embodiment, an azeotrope or azeotropic composition is prepared by mixing hexafluoroisopropyl acetate (CH3-CO-O-CH(CF3)2), perfluoro(2-methyl-2-pentene) (hexafluoropropylene dimer: CF3CF2-CF=C(CF3)2) with methyl 2,2,3,3,3-pentafluoropropyl ether (CF3CF2CH2-O-CH3).

[0238] The same method as in Example 5 was used to determine whether the mixture had reached an azeotropic or near-azeotropic state. When the mass of hexafluoroisopropyl acetate accounted for 42.92%-61.35% of the mixture's mass fraction, the mass of perfluoro(2-methyl-2-pentene) accounted for 40.77%-27.61% of the mixture's mass fraction, and the mass of 2,2,3,3,3-pentafluoropropyl methyl ether accounted for 16.31%-11.04% of the mixture's mass fraction, the boiling point temperature measurements in Table 17 showed that, within a certain range, the mixture had formed an azeotrope or near-azeotropic composition with the lowest boiling point.

[0239] Table 17 Boiling Point Temperature Measurements

[0240]

[0241]

[0242] Take a mixture in which hexafluoroisopropyl acetate accounts for 42.92%-61.35% of the total mass of the mixture, perfluorinated (2-methyl-2-pentene) accounts for 40.77%-27.61% of the total mass of the mixture, and 2,2,3,3,3-pentafluoropropyl methyl ether accounts for 16.31%-11.04% of the total mass of the mixture. Measure the thermal conductivity (maximum value: 0.105 W / m·K) and dielectric constant of the mixture and record the data (maximum value: 2.8813).

[0243] Example 18

[0244] This embodiment provides a fluorinated liquid composition, which is a ternary fluorinated liquid organic compound composed of perfluorinated or polyfluorinated esters, perfluorinated or polyfluorinated olefins and perfluorinated or polyfluorinated ketones.

[0245] Specifically, in this embodiment, an azeotrope or azeotropic composition is prepared by mixing 2,2,2-trifluoroethyl carbamate (CF3-CH2-O-CO-H), perfluorohex-1-ene (CF3-(CF2)3-CF=CF2) and methylpentadecafluoroheptyl ketone (CF3(CF2)6-CO-CH3).

[0246] The same method as in Example 5 was used to determine whether the mixture had reached an azeotropic or near-azeotropic state. When the mass of 2,2,2-trifluoroethyl carbamate accounted for 42.92%-70.42% of the mass fraction of the mixture, the mass of perfluorohex-1-ene accounted for 15.88%-7.75% of the mass fraction of the mixture, and the mass of methylpentadecafluoroheptyl ketone accounted for 41.20%-21.83% of the mass fraction of the mixture, the boiling point temperature measurements in Table 18 showed that, within a certain range, the mixture had formed an azeotrope or near-azeotropic composition with the lowest boiling point.

[0247] Table 18 Boiling Point Temperature Measurements

[0248]

[0249]

[0250] Take a mixture in which the mass fraction of 2,2,2-trifluoroethyl carbamate is 42.92%-70.42%, the mass fraction of perfluorohex-1-ene is 15.88%-7.75%, and the mass fraction of methylpentadecafluoroheptyl ketone is 41.20%-21.83%. Measure the thermal conductivity (maximum value: 0.103 W / m·K) and dielectric constant of the mixture and record the data (maximum value: 2.8937).

[0251] Example 19

[0252] This embodiment provides a fluorinated liquid composition, which is a ternary fluorinated liquid organic compound composed of perfluorinated or polyfluorinated esters, perfluorinated or polyfluorinated alcohols and perfluorinated or polyfluorinated ethers.

[0253] Specifically, in this embodiment, an azeotrope or azeotropic composition is prepared by mixing ethyl trifluoroacetate (CF3-CO-O-CH2CH3), 1,1,1,3,3,3-hexafluoro-2-propanol ((CF3)2CH-OH) and heptafluoropropyl 1,2,2,2-tetrafluoroethyl ether (CF3CF2CF2-O-CFH-CF3).

[0254] The same method as in Example 5 was used to determine whether the mixture had reached an azeotropic or near-azeotropic state. When the mass of ethyl trifluoroacetate accounted for 42.92%-56.5% of the mass fraction of the mixture, the mass of 1,1,1,3,3,3-hexafluoro-2-propanol accounted for 16.31%-12.43% of the mass fraction of the mixture, and the mass of heptafluoropropyl 1,2,2,2-tetrafluoroethyl ether accounted for 40.77%-31.07% of the mass fraction of the mixture, the boiling point temperature measurements in Table 19 showed that, within a certain range, the mixture had formed an azeotrope or near-azeotropic composition with the lowest boiling point.

[0255] Table 19 Boiling Point Temperature Measurements

[0256]

[0257]

[0258] Take a mixture in which ethyl trifluoroacetate accounts for 42.92%-56.5% of the mass fraction of the mixture, 1,1,1,3,3,3-hexafluoro-2-propanol accounts for 16.31%-12.43% of the mass fraction of the mixture, and heptafluoropropyl 1,2,2,2-tetrafluoroethyl ether accounts for 40.77%-31.07% of the mass fraction of the mixture. Measure the thermal conductivity (maximum value: 0.133 W / m·K) and dielectric constant of the mixture and record the data (maximum value: 4.5613).

[0259] Example 20

[0260] This embodiment provides a fluorinated liquid composition, which is a ternary fluorinated liquid organic compound composed of perfluorinated or polyfluorinated esters, perfluorinated or polyfluorinated alcohols and perfluorinated or polyfluorinated ketones.

[0261] Specifically, in this embodiment, a combination of methyl trifluoroacetate (CF3-CO-O-CH3), perfluorotert-butanol ((CF3)3C-OH), and methyl pentafluoroethyl ketone (CF3CF2-CO-CH3) is used to create an azeotrope or azeotropic composition.

[0262] The same method as in Example 5 was used to determine whether the mixture had reached an azeotropic or near-azeotropic state. When the mass of methyl trifluoroacetate accounted for 38.32%-67.12% of the mass fraction of the mixture, the mass of perfluorotert-butanol accounted for 44.06%-23.49% of the mass fraction of the mixture, and the mass of methyl pentafluoroethyl ketone accounted for 17.62%-9.39% of the mass fraction of the mixture, the boiling point temperature measurements in Table 20 showed that, within a certain range, the mixture had formed an azeotrope or near-azeotropic composition with the lowest boiling point.

[0263] Table 20 Boiling Point Temperature Measurements

[0264]

[0265]

[0266]

[0267] Take a mixture in which methyl trifluoroacetate accounts for 38.32%-67.12% of the mass fraction of the mixture, perfluorotert-butanol accounts for 44.06%-23.49% of the mass fraction of the mixture, and methyl pentafluoroethyl ketone accounts for 17.62%-9.39% of the mass fraction of the mixture. Measure the thermal conductivity (maximum value: 0.125 W / m·K) and dielectric constant of the mixture and record the data (maximum value: 4.0613).

[0268] Example 21

[0269] This embodiment provides a fluorinated liquid composition, which is a ternary fluorinated liquid organic compound composed of perfluorinated or polyfluorinated esters, perfluorinated or polyfluorinated ethers and perfluorinated or polyfluorinated ketones.

[0270] Specifically, in this embodiment, an azeotrope or azeotropic composition is prepared by mixing hexafluoroisopropyl acetate (CH3-CO-O-CH(CF3)2), heptafluoroisopropyl methyl ether ((CF3)2CFH-O-CH3), and methylpentadecafluoroheptyl ketone (CF3(CF2)6-CO-CH3).

[0271] The same method as in Example 5 was used to determine whether the mixture had reached an azeotropic or near-azeotropic state. When the mass of hexafluoroisopropyl acetate accounted for 39.69%-53.19% of the mass fraction of the mixture, the mass of heptafluoroisopropyl methyl ether accounted for 22.62%-17.55% of the mass fraction of the mixture, and the mass of methylpentadecafluoroheptyl ketone accounted for 37.69%-29.26% of the mass fraction of the mixture, the boiling point temperature measurements in Table 21 showed that, within a certain range, the mixture had formed an azeotrope or near-azeotropic composition with the lowest boiling point.

[0272] Table 21 Boiling Point Temperature Measurements

[0273]

[0274]

[0275]

[0276] Take a mixture in which hexafluoroisopropyl acetate accounts for 39.69%-53.19% of the total mass of the mixture, heptafluoroisopropyl methyl ether accounts for 22.62%-17.55% of the total mass of the mixture, and methylpentadecafluoroheptyl ketone accounts for 37.69%-29.26% of the total mass of the mixture. Measure the thermal conductivity (maximum value: 0.123 W / m·K) and dielectric constant of the mixture and record the data (maximum value: 4.2653).

[0277] Furthermore, the high thermal conductivity, low boiling point fluorinated liquid azeotrope or azeotropic-like composition provided in the above embodiments is selected from the azeotropic or azeotropic state range of the mixture, and the thermal conductivity is tested according to ASTM D7896 standard using the transient hot wire method, and the maximum value is measured; according to GB / T1409-2006 standard, the dielectric constant is tested under 1KHZ conditions, and the maximum value is measured.

[0278] The test results show that the mixtures in the azeotropic or quasi-azeotropic state range exhibit high thermal conductivity (the thermal conductivity of commercially available two-phase immersion fluorinated liquids is generally between 0.04 and 0.07 W / m·k) and good insulation properties. The maximum values ​​of thermal conductivity and dielectric constant of the mixtures in the azeotropic or quasi-azeotropic state range are shown in Table 22.

[0279] Table 22 Comparison Results

[0280]

[0281]

[0282] This demonstrates that the fluorinated liquid composition provided in this application has a high thermal conductivity and good heat dissipation effect.

[0283] In summary, the fluorinated liquid composition provided in this application has a high thermal conductivity and good heat dissipation effect, and can be applied to chip heat dissipation systems, large server heat dissipation systems, supercomputing data center heat dissipation systems, new energy vehicle thermal management systems, etc.

[0284] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A fluorinated liquid composition, characterized in that, The fluorinated liquid composition includes perfluorinated or polyfluorinated esters, and the fluorinated liquid composition further includes any one or any two of perfluorinated or polyfluorinated alkanes, perfluorinated or polyfluorinated olefins, perfluorinated or polyfluorinated alcohols, perfluorinated or polyfluorinated ethers, and perfluorinated or polyfluorinated ketones; The fluorinated liquid composition is an azeotrope or azeotrope composed of its components; The boiling point difference between the component with the highest boiling point and the component with the lowest boiling point in the fluorinated liquid composition shall not exceed 30°C. The thermal conductivity of the fluorinated liquid composition is ≥0.08W / (m·k), the boiling point of the fluorinated liquid composition is 30-80℃, and the dielectric constant of the fluorinated liquid composition under 1KHz conditions is ≤5. The perfluorinated or polyfluorinated ester is selected from any one of 2,2,2-trifluoroethyl carbamate CF3-CH2-O-CO-H, methyl pentafluoropropionate CF3-CF2-CO-O-CH3, ethyl trifluoroacetate CF3-CO-O-CH2CH3, methyl trifluoroacetate CF3CO-OCH3, and hexafluoroisopropyl acetate CH3-CO-O-CH(CF3)2; The perfluoro or polyfluoroalkane is selected from any one of perfluoro-2-methylpentane CF3-CF2-CF2CF(CF3)2, 1H-perfluoropentane CF3(CF2)3CHF2 and 2H,3H-decafluoropentane CF3CHFCHFCF2CF3; The perfluorinated or polyfluorinated olefin is selected from either perfluorinated (2-methyl-2-pentene) or perfluorohex-1-ene; The perfluorinated or polyfluorinated alcohol is selected from any one of perfluorotert-butanol (CF3)3C-OH and 1,1,1,3,3,3-hexafluoro-2-propanol (CF3)2CH-OH; The perfluorinated or polyfluoroether is selected from any one of the following: fluoromethyl-1,1,1,3,3,3-hexafluoroisopropyl ether (CF3)2CH-O-CH2F, heptafluoropropyl 1,2,2,2-tetrafluoroethyl ether CF3CF2CF2-O-CFH-CF3, heptafluoroisopropylmethyl ether (CF3)2CFH-O-CH3, methyl 2,2,3,3,3-pentafluoropropyl ether CF3CF2CH2-O-CH3, and 1,1,2,3,3,3-hexafluoropropyl methyl ether CF3-CHF-CF2-O-CH3; The perfluorinated or polyfluoroketone is selected from any one of 1,1,1,2,2,4,5,5,5-nonafluoro-4-(trifluoromethyl)-3-pentanone (CF3)2-CF-CO-CF2CF3, methylpentafluoroethyl ketone CF3CF2-CO-CH3, and methylpentadecafluoroheptyl ketone CF3(CF2)6-CO-CH3.

2. The fluorinated liquid composition according to claim 1, characterized in that, The perfluorinated or polyfluorinated ester is selected from 2,2,2-trifluoroethyl carbamate, hexafluoroisopropyl acetate, ethyl trifluoroacetate, or methyl trifluoroacetate.

3. The fluorinated liquid composition according to claim 1, characterized in that, The perfluoro or polyfluoroalkane is selected from perfluoro-2-methylpentane or 2H,3H-decafluoropentane.

4. The use of the fluorinated liquid composition according to any one of claims 1-3 in the preparation of liquid cooling working fluid.

5. The application according to claim 4, characterized in that, The liquid cooling medium is an immersion cooling medium.

6. The application according to claim 5, characterized in that, The cooling medium is used in the liquid cooling system of electronic equipment.

7. The application according to claim 6, characterized in that, The liquid cooling system of the electronic device includes a chip heat dissipation system, a server heat dissipation system, a supercomputing data center heat dissipation system, or a new energy vehicle thermal management system.

8. A liquid cooling system comprising electronic equipment and a liquid cooling medium prepared from the fluorinated liquid composition according to any one of claims 1-3, wherein the electronic equipment is immersed in the liquid cooling medium.

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