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CN-122012036-A - Cooling liquid composition, preparation method and application thereof

CN122012036ACN 122012036 ACN122012036 ACN 122012036ACN-122012036-A

Abstract

The application relates to the technical field of liquid cooling, and discloses a cooling liquid composition, a preparation method and application thereof, wherein the cooling liquid composition comprises, by mass, 0.5-20 parts of first base oil, 0.5-20 parts of second base oil, 0.5-20 parts of third base oil, 50-90 parts of ester base oil, 0.1-0.5 part of pour point depressant and 0.1-0.2 part of antioxidant, and the first base oil, the second base oil, the third base oil, the ester base oil, the pour point depressant and the antioxidant are mutually matched under specific use, so that the cooling liquid composition has lower viscosity at 40 ℃, good fluidity, higher open flash point, higher specific heat capacity during application, is favorable for maintaining stable heat transfer efficiency, improves heat conducting performance, and can effectively cool a data center, an energy storage system or a new energy charging gun.

Inventors

  • DAI JINCHENG
  • JIA HUI
  • LIU KONGHUA
  • WU LI

Assignees

  • 超聚变数字技术股份有限公司

Dates

Publication Date
20260512
Application Date
20260126

Claims (10)

  1. 1. The cooling liquid composition is characterized by comprising, by mass, 0.5-20 parts of a first base oil, 0.5-20 parts of a second base oil, 0.5-20 parts of a third base oil, 50-90 parts of an ester base oil, 0.1-0.5 part of a pour point depressant and 0.1-0.2 part of an antioxidant; The first base oil is a mixture of linear or branched C16-C50 alkanes, the kinematic viscosity of the first base oil at 40 ℃ is 3.0-4.0 mm 2 /s, the second base oil is a mixture of linear, branched or cyclic C18-C50 alkanes, the kinematic viscosity of the second base oil at 40 ℃ is 6.4-7.8 mm 2 /s, the third base oil is a mixture of linear, branched or cyclic C18-C50 alkanes, and the kinematic viscosity of the third base oil at 40 ℃ is 4.3-5.3 mm 2 /s; The ester base oil is monoester, the total carbon number of the ester base oil is 18-22, and the kinematic viscosity of the ester base oil at 40 ℃ is 4.0-6.0 mm 2 /s.
  2. 2. The coolant composition of claim 1, wherein the ester base oil is an oil comprising a compound of formula R 1 COOR 2 , wherein R 1 is a radical of a monohydric fatty acid, wherein R 2 is a radical of a monohydric alcohol, wherein the monohydric fatty acid is a linear, branched, saturated or unsaturated monohydric fatty acid having 8 to 16 carbon atoms, and wherein the monohydric alcohol is a linear, branched, saturated or unsaturated monohydric alcohol having 4 to 12 carbon atoms.
  3. 3. The coolant composition of claim 1 or 2, wherein the ester base oil is isooctyl laurate or isononyl isononanoate.
  4. 4. A coolant composition according to any of claims 1 to 3, wherein the first base oil has an open flash point of greater than or equal to 144 ℃, the second base oil has an open flash point of greater than or equal to 185 ℃, and the third base oil has an open flash point of greater than or equal to 168 ℃.
  5. 5. The coolant composition of any of claims 1-4, wherein the first base oil is DowSyn 270,270, the second base oil is CARGILL EF3446, and the third base oil is Cargill C1 or DowSyn LCUHVB 2.
  6. 6. The coolant composition of any one of claims 1 to 5, wherein the pour point depressant is selected from one or more of a polyacrylate, a polymethacrylate, an ethylene-vinyl acetate copolymer, a polystyrene-maleate copolymer, and polystyrene.
  7. 7. The cooling liquid composition according to any one of claims 1 to 6, further comprising a nano phase change material, wherein the nano phase change material is a metal organic framework polymer-based phase change material MOFPoly PCM, and the nano phase change material is 0.05-0.15 parts by mass.
  8. 8. The cooling liquid composition according to any one of claims 1 to 7, comprising, by mass, 10 to 15 parts of the first base oil, 5 to 10 parts of the second base oil, 5 to 10 parts of the third base oil, 70 to 80 parts of the ester base oil, 0.1 to 0.4 part of the pour point depressant, 0.13 to 0.18 part of the antioxidant, and 0.08 to 0.12 part of the nano phase change material.
  9. 9. A method for preparing a cooling liquid composition, which is characterized in that the preparation method comprises the steps of providing raw materials according to the components of the cooling liquid composition as claimed in any one of claims 1 to 8, and heating and uniformly mixing the raw materials to obtain the cooling liquid composition.
  10. 10. Use of a coolant composition according to any one of claims 1 to 8 or a coolant composition obtained by the method of preparation according to claim 9 for cooling a data center, an energy storage system or a new energy charging gun.

Description

Cooling liquid composition, preparation method and application thereof Technical Field The embodiment of the application relates to the technical field of liquid cooling, in particular to a cooling liquid composition, a preparation method and application thereof. Background The development trend of the cooling technology of the data center, the energy storage system and the new energy charging gun is pursued for high efficiency, energy conservation, environmental protection and intellectualization. Data center cooling technology is expanding the use of immersion cooling, i.e., immersing Information Technology (IT) equipment in a non-conductive liquid to dissipate heat. However, direct cooling of the chip becomes a viable alternative due to the excessive cost of retrofitting an immersion cooling system. This solution circulates the liquid to the most heat generating components of the IT equipment with higher efficiency and less installation cost and damage. The energy storage system has higher requirements on temperature control, and the submerged cooling technology realizes quick heat conduction and dissipation by immersing the energy storage equipment in cooling liquid, so that the stability and safety of the energy storage system are improved. With the continuous expansion of new energy automobile markets and the increase of endurance mileage, the realization of high-power fast charging by the submerged cooling technology gradually becomes a key means for solving the endurance bottleneck. The cooling liquid used in the immersion liquid cooling technology needs to meet certain selection criteria, including good electrical insulation, proper working temperature range, fireproof safety, good biodegradability, low viscosity and the like. However, the existing cooling liquid has higher viscosity, the cooling effect needs to be improved, and the technical problem to be solved is currently urgent. Therefore, there is a need to develop a coolant composition having a lower viscosity, a higher specific heat capacity and an open flash point, thereby improving the cooling effect. Disclosure of Invention In order to achieve the above purpose, the embodiment of the application adopts the following technical scheme: In the first aspect, the application provides a cooling liquid composition, which comprises the following components, by mass, 0.5-20 parts of first base oil, 0.5-20 parts of second base oil, 0.5-20 parts of third base oil, 50-90 parts of ester base oil, 0.1-0.5 part of pour point depressant and 0.1-0.2 part of antioxidant; The first base oil is a mixture of linear or branched C16-C20 alkanes, the kinematic viscosity of the first base oil at 40 ℃ is 3.0-4.0 mm 2/s, the second base oil is a mixture of linear, branched or cyclic C18-C50 alkanes, the kinematic viscosity of the second base oil at 40 ℃ is 6.4-7.8 mm 2/s, the third base oil is a mixture of linear, branched or cyclic C18-C50 alkanes, and the kinematic viscosity of the third base oil at 40 ℃ is 4.3-5.3 mm 2/s; The ester base oil is monoester, the total carbon number of the ester base oil is 18-22, and the kinematic viscosity of the ester base oil at 40 ℃ is 4.0-6.0 mm 2/s. According to the scheme, the first base oil, the second base oil, the third base oil, the ester base oil, the pour point depressant and the antioxidant are matched with each other in a specific dosage, the viscosity is low at 40 ℃, the fluidity is good, the open flash point is high, the safety is improved during application, the specific heat capacity is high, the stable heat transfer efficiency is maintained, the heat conducting performance is improved, the data center, the energy storage system or the new energy charging gun can be effectively cooled, meanwhile, the pour point depressant changes the shape, the size and the quantity of wax crystals through eutectic or adsorption, the formation of a crystal network of a cooling liquid composition is restrained, the flow of the cooling liquid is kept, the antioxidant has oxidation resistance, and the oxidation of the cooling liquid composition is reduced. In some embodiments of the application, the ester base oil is an oil comprising a compound of formula R 1COOR2, wherein R 1 is a radical of a monohydric fatty acid and R 2 is a radical of a monohydric alcohol, the monohydric fatty acid is a linear, branched, saturated or unsaturated monohydric fatty acid, the monohydric fatty acid has 8 to 16 carbon atoms, and the monohydric alcohol is a linear, branched, saturated or unsaturated monohydric alcohol, the monohydric alcohol has 4 to 12 carbon atoms. Based on the scheme, the cooling liquid composition in the embodiment of the application has lower kinematic viscosity at 40 ℃, higher open flash point and specific heat capacity, and improves the cooling performance of the composition in application. In some embodiments of the application, the ester base oil is isooctyl laurate or isononyl isononanoate. Based on the scheme, the cooling