A cooling liquid and its preparation method and application

Abstract

The present invention relates to the field of coolant technology, and in particular to a coolant and a preparation method and application thereof. The coolant of the present invention comprises the following components by weight: 95 to 105 parts of Fischer-Tropsch synthetic oil and / or dimethyl silicone oil, 0.5 to 1.5 parts of oily epoxy resin, 0.0003 to 0.0007 parts of dispersant, and 0.03 to 0.06 parts of antioxidant. As an insulating coolant for single-phase immersion liquid cooling technology, the coolant of the present invention has excellent compatibility with optical modules, and the optical modules can be directly used in a fully immersed liquid cooling environment without packaging.

Description

Technical Field

[0001] The present invention relates to the technical field of cooling liquids, and in particular to a cooling liquid and a preparation method and application thereof. Background Art

[0002] In recent years, the continuous advancement of technologies such as artificial intelligence, cloud computing, the Internet, and blockchain has put forward increasingly higher requirements for the performance and integration of electronic equipment. The resulting problems such as high heat density and huge energy consumption have also posed higher challenges to data center refrigeration technology.

[0003] There are many ways to dissipate heat for electronic devices. The most common one is air cooling technology, which uses air as a cooling medium to cool electronic devices. However, as the power consumption of electronic devices reaches a certain level, traditional air cooling methods can no longer better solve the temperature rise of components in high-power electronic devices. Based on this, immersion liquid cooling technology came into being. Immersion liquid cooling technology cools the entire machine or core components by immersing them in coolant. It has high efficiency, but the current coolant is mostly used for components such as engines. When applied to optical modules, many problems arise, such as poor compatibility with optical modules.

[0004] Optical modules that adapt to traditional air cooling will display a red fault light when they are completely immersed in oil coolant and cannot transmit optical signals. The current temporary solution is to not immerse the optical module in the coolant. The disadvantage is that when there is continuous high-throughput optical signal transmission, the heat of the optical module is easy to accumulate, resulting in an increase in temperature, and the optical signal transmission rate is reduced. If it is reduced too much, it will affect related services. In actual operation and maintenance, it is impossible to completely avoid optical module failures caused by coolant dripping on the optical module. The second solution is to encapsulate the existing optical module. In essence, it is also to prevent the optical module from contacting the coolant. However, the encapsulation material will crack and fall off after being immersed in the liquid for several months, losing its isolation function.

[0005] In view of this, the present invention is proposed. Summary of the invention

[0006] The first object of the present invention is to provide a coolant having excellent compatibility with an optical module, and the optical module can be directly applied to a fully immersed liquid cooling environment without packaging.

[0007] The second object of the present invention is to provide a method for preparing the coolant as described above, which has simple steps.

[0008] A third object of the present invention is to provide an immersion single-phase liquid cooling system, comprising the cooling liquid as described above.

[0009] In order to achieve the above-mentioned purpose of the present invention, the following technical solutions are particularly adopted:

[0010] The present invention provides a cooling liquid, which comprises the following components by weight:

[0011] 95-105 parts of Fischer-Tropsch synthetic oil and / or dimethyl silicone oil, 0.5-1.5 parts of oily epoxy resin, 0.0003-0.0007 parts of dispersant and 0.03-0.06 parts of antioxidant.

[0012] Furthermore, the cooling liquid comprises the following components by weight:

[0013] Fischer-Tropsch synthetic oil and / or dimethyl silicone oil 98-102 parts, oily epoxy resin 0.8-1.2 parts, dispersant 0.0004-0.0006 parts and antioxidant 0.04-0.05 parts.

[0014] Furthermore, the Fischer-Tropsch synthetic oil is a mixed hydrocarbon of C17 to C26.

[0015] Preferably, the viscosity of the Fischer-Tropsch synthetic oil at 40°C is 8 to 12 mm 2 / s.

[0016] Furthermore, the viscosity of the dimethyl silicone oil at 40°C is 16-39 mm 2 / s.

[0017] Furthermore, the oily epoxy resin includes E44 and / or E51.

[0018] Furthermore, the dispersant includes BYK-R605.

[0019] Furthermore, the antioxidant includes di-tert-butyl-p-methylphenol and / or di-tert-butylphenol.

[0020] The present invention also provides a method for preparing the cooling liquid as described above, wherein the cooling liquid is obtained after the components are evenly mixed.

[0021] Furthermore, the mixing temperature is 50-60°C.

[0022] The present invention also provides an immersion single-phase liquid cooling system, comprising the cooling liquid as described above.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The coolant of the present invention adopts pure Fischer-Tropsch synthetic oil and / or low-viscosity dimethyl silicone oil as the base oil, and is combined with an oily epoxy resin and a dispersant with good compatibility with optical module materials, and an antioxidant is added; as an insulating coolant for single-phase immersion liquid cooling technology, it has excellent compatibility with optical modules, and the optical modules can be directly used in a fully immersion liquid cooling environment without packaging. DETAILED DESCRIPTION

[0025] The technical scheme of the present invention will be clearly and completely described below in conjunction with specific embodiments, but it will be appreciated by those skilled in the art that the following described embodiments are part of embodiments of the present invention, rather than all embodiments, and are only used to illustrate the present invention, and should not be considered as limiting the scope of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative work, all belong to the scope of protection of the present invention. If specific conditions are not indicated in the embodiments, they are carried out according to normal conditions or conditions recommended by the manufacturer. If the manufacturer is not indicated in the reagents or instruments used, they are all conventional products that can be purchased commercially.

[0026] A cooling liquid according to an embodiment of the present invention and a preparation method and application thereof are described in detail below.

[0027] In some embodiments of the present invention, a cooling liquid is provided, which comprises the following components in parts by weight:

[0028] 95-105 parts of Fischer-Tropsch synthetic oil and / or dimethyl silicone oil, 0.5-1.5 parts of oily epoxy resin, 0.0003-0.0007 parts of dispersant and 0.03-0.06 parts of antioxidant.

[0029] The coolant of the present invention adopts pure Fischer-Tropsch synthetic oil and / or low-viscosity dimethyl silicone oil as base oil, and is combined with oily epoxy resin and dispersant with good compatibility with optical module materials, and an antioxidant is added; as an insulating coolant for single-phase immersion liquid cooling technology, it has excellent compatibility with optical modules.

[0030] In some specific embodiments of the present invention, typically but not limiting, for example, the weight parts of Fischer-Tropsch synthetic oil and / or dimethyl silicone oil are 95 parts, 96 parts, 97 parts, 98 parts, 99 parts, 100 parts, 101 parts, 102 parts, 103 parts, 104 parts or 105 parts, etc.;

[0031] The weight proportion of the oily epoxy resin is 0.5, 0.6, 0.7, 0.8, 0.9, 1, 1.1, 1.2, 1.3, 1.4 or 1.5, etc.;

[0032] The weight percentage of the dispersant is 0.0003 parts, 0.0004 parts, 0.0005 parts, 0.0006 parts or 0.0007 parts;

[0033] The weight percentage of the antioxidant is 0.03 parts, 0.04 parts, 0.05 parts or 0.06 parts, etc.

[0034] In some embodiments of the present invention, the cooling liquid comprises the following components by weight:

[0035] Fischer-Tropsch synthetic oil and / or dimethyl silicone oil 98-102 parts, oily epoxy resin 0.8-1.2 parts, dispersant 0.0004-0.0006 parts and antioxidant 0.04-0.05 parts.

[0036] In some embodiments of the present invention, the cooling liquid comprises the following components by weight:

[0037] 100 parts of Fischer-Tropsch synthetic oil and / or dimethyl silicone oil, 1 part of oily epoxy resin, 0.0005 parts of dispersant and 0.04-0.05 parts of antioxidant.

[0038] In some embodiments of the present invention, the Fischer-Tropsch synthetic oil is a mixed hydrocarbon of C17 to C26; Fischer-Tropsch oil is a synthetic oil produced by Fischer-Tropsch reaction using coal as raw material; the Fischer-Tropsch synthetic oil of the present invention is a fraction of C17 to C26.

[0039] In some embodiments of the present invention, the viscosity of the Fischer-Tropsch synthetic oil at 40°C is 8 to 12 mm 2 / s; preferably, the viscosity of the Fischer-Tropsch synthetic oil at 40°C is 9 mm 2 / s.

[0040] In some embodiments of the present invention, the viscosity of dimethyl silicone oil is 16 to 39 mm at 40°C. 2 / s.

[0041] In some embodiments of the present invention, the oily epoxy resin includes E44 and / or E51.

[0042] In some embodiments of the present invention, the dispersant includes BYK-R605; available from BYK-Chemie GmbH.

[0043] In some embodiments of the present invention, the antioxidant includes di-tert-butyl-p-methylphenol and / or di-tert-butylphenol.

[0044] In some embodiments of the present invention, the optical module insulating coolant for single-phase immersion liquid cooling comprises the following steps, measured in parts by weight:

[0045] 95-105 parts of Fischer-Tropsch synthetic oil and / or dimethyl silicone oil, 0.5-1.5 parts of oily epoxy resin, 0.0003-0.0007 parts of BYK-R605 dispersant and 0.03-0.06 parts of di-tert-butyl-p-methylphenol.

[0046] In some embodiments of the present invention, a method for preparing the above-mentioned coolant is also provided, and the coolant is obtained after the components are evenly mixed.

[0047] In some embodiments of the present invention, the mixing temperature is 50-60°C.

[0048] In some specific embodiments of the present invention, Fischer-Tropsch synthetic oil and / or dimethyl silicone oil are added to the reactor, the temperature is controlled to 55±5°C, stirring is continued at a speed of 100-150 r / min, and then an antioxidant, an oily epoxy resin and a dispersant are added in sequence. After stirring for 10-30 minutes, the mixture is cooled to obtain a coolant.

[0049] In some embodiments of the present invention, an immersion single-phase liquid cooling system is also provided, comprising the above-mentioned cooling liquid.

[0050] In some embodiments of the present invention, a liquid cooling method is also provided, comprising partially or completely immersing the optical module to be cooled in the above-mentioned cooling liquid, and then performing heat exchange between the cooling liquid and other heat exchange devices.

[0051] The coolant of the present invention has good compatibility with the optical module and can be directly applied in a fully immersed liquid cooling environment without packaging.

[0052] Example 1

[0053] The method for preparing the coolant provided in this embodiment comprises the following steps:

[0054] Add 100 kg of Fischer-Tropsch synthetic oil (C17-C26 normal isomerized mixed hydrocarbons, viscosity 9 mm at 40 °C) into the reactor. 2 / s), control the temperature to 55°C, continue stirring at a speed of 120r / min, then add 0.04kg of di-tert-butyl-p-methylphenol, 1kg of epoxy resin E44 and 0.5g of BYK-R605 dispersant in sequence, stir for 20min, and cool to obtain a coolant.

[0055] Example 2

[0056] The method for preparing the coolant provided in this embodiment comprises the following steps:

[0057] Add 100kg dimethyl silicone oil (viscosity 16-39mm at 40℃) into the reactor. 2 / s), control the temperature to 55°C, continue stirring at a speed of 120r / min, then add 0.04kg of di-tert-butyl-p-methylphenol, 1kg of epoxy resin E51 and 0.5g of BYK-R605 dispersant in sequence, stir for 20min, and cool to obtain a coolant.

[0058] Example 3

[0059] The method for preparing the coolant provided in this embodiment comprises the following steps:

[0060] Add 105kg of Fischer-Tropsch synthetic oil (C17-C26 normal isomerized mixed hydrocarbons, viscosity 9mm at 40°C) into the reactor. 2 / s), control the temperature to 55°C, continue stirring at a speed of 120r / min, then add 0.05kg of di-tert-butyl-p-methylphenol, 1.1kg of epoxy resin E51 and 0.6g of BYK-R605 dispersant in sequence, stir for 20min, and cool to obtain a coolant.

[0061] Comparative Example 1

[0062] The preparation method of the coolant provided in this comparative example comprises the following steps:

[0063] 100 kg of mineral base oil was added to the reactor, the temperature was controlled at 55°C, stirring was continued at a speed of 120 r / min, and then 0.04 kg of di-tert-butyl-p-methylphenol and 0.5 g of BYK-R605 dispersant were added in sequence. After stirring for 20 minutes, the mixture was cooled to obtain a coolant.

[0064] Comparative Example 2

[0065] The preparation method of the coolant provided in this comparative example comprises the following steps:

[0066] Add 100 kg of Fischer-Tropsch synthetic oil (C17-C26 normal isomerized mixed hydrocarbons, viscosity 9 mm at 40 °C) into the reactor. 2 / s), control the temperature to 55°C, continue stirring at a speed of 120r / min, then add 0.04kg of di-tert-butyl-p-methylphenol, 2kg of epoxy resin E44 and 0.7g of BYK-R605 dispersant in sequence, stir for 20min, and cool to obtain a coolant.

[0067] Test Example 1

[0068] The physical properties of the coolant prepared in Example 1 were tested, and the results are shown in Table 1.

[0069] Table 1

[0070]

[0071]

[0072] As can be seen from Table 1, the coolant of the present invention has the characteristics of high thermal stability, high material compatibility, high insulation, high water repellency, flame retardancy, high stability, low reactivity, chemical resistance, chlorination resistance, good weather resistance, etc.

[0073] The compatibility of the coolants prepared in Example 1 and Comparative Example 1 with the optical module was tested, and the results are shown in Table 2.

[0074] Among them, the testing method is: building an optical module testing platform, specifically, completely immersing the optical module with normal test function in the air-cooled state together with the communication equipment in a 45°C coolant, wherein the coolant is respectively prepared from Example 1, Example 2, Comparative Example 1 and Comparative Example 2; continuously monitoring and recording the working status indicator light prompts of the optical module on the communication equipment, a red light indicates an optical module failure and abnormal signal transmission.

[0075] Table 2

[0076]

[0077]

[0078]

[0079]

[0080] In Table 2, normal means: green light after 30 days, normal; for Comparative Example 1 corresponding to SFP-GE-LX-SM1310-W-20km (Nocred) and 1.25G-1310nm-10km-SM-SFP+ (HUAWEI), fault means: red light after full immersion and power on, fault; for the rest in the table, fault means: red light within 3 days, fault.

[0081] It can be seen from Table 2 that compared with the coolant prepared in Comparative Example 1, the coolant of the present invention adopts pure Fischer-Tropsch synthetic oil as the base oil, eliminating the influence of impurities in the mineral base oil on the performance of the optical module, and is supplemented with additives with good compatibility with optical module materials, which significantly improves the compatibility with various types of optical modules.

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An optical module insulating coolant for single-phase immersion liquid cooling, characterized in that: By weight, it includes the following components: Fischer-Tropsch synthetic oil 98-102 parts, oily epoxy resin 0.8-1.2 parts, dispersant 0.0004-0.0006 parts and antioxidant 0.04-0.05 parts; The Fischer-Tropsch synthetic oil is a mixed hydrocarbon of C17 to C26; The viscosity of the Fischer-Tropsch synthetic oil at 40°C is 8 to 12 mm 2 / s; The oily epoxy resin is E44 and / or E51; The dispersant includes BYK-R605; The antioxidant includes di-tert-butyl-p-methylphenol and / or di-tert-butylphenol.

2. The method for preparing the optical module insulating coolant for single-phase immersion liquid cooling according to claim 1, characterized in that: After the components are evenly mixed, a coolant is obtained.

3. The method for preparing the optical module insulating coolant for single-phase immersion liquid cooling according to claim 2, characterized in that: The mixing temperature is 50-60°C.

4. An immersion single-phase liquid cooling system, characterized in that: It includes the optical module insulating coolant for single-phase immersion liquid cooling as described in claim 1.

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