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CN-121991645-A - Cooling liquid for radar system and preparation method and application thereof

CN121991645ACN 121991645 ACN121991645 ACN 121991645ACN-121991645-A

Abstract

The invention belongs to the technical field of radar system cooling, and discloses a cooling liquid for a radar system, a preparation method and application thereof. The cooling liquid comprises base oil and additives, wherein the base oil comprises 80-100 wt% of paraffin-based mineral oil and 0-20 wt% of naphthenic base mineral oil, the weight average molecular weight of the paraffin-based mineral oil is 250-300 g/mol, and the weight average molecular weight of the naphthenic base mineral oil is 260-320 g/mol. The cooling liquid has the characteristics of excellent high-low temperature tolerance, high oxidation stability, good electrical insulation performance, good heat transfer performance, good material compatibility and environmental protection, can be used for effectively cooling a radar system, can be used for corrosion protection of multi-metal materials and welding flux in the radar liquid cooling system, has long service life, and is suitable for industrial production.

Inventors

  • WANG KAIMING
  • BAI SHENGJUN
  • WANG YAN

Assignees

  • 中石油克拉玛依石化有限责任公司
  • 中国石油天然气股份有限公司

Dates

Publication Date
20260508
Application Date
20241107

Claims (10)

  1. 1. A cooling liquid for a radar system, characterized in that the cooling liquid for a radar system comprises a base oil and an additive; Based on the total weight of the base oil, the base oil comprises 80-100 wt% of paraffin-based mineral oil and 0-20 wt% of naphthenic base mineral oil, wherein the weight average molecular weight of the paraffin-based mineral oil is 250-300 g/mol, and the weight average molecular weight of the naphthenic base mineral oil is 260-320 g/mol.
  2. 2. The radar system coolant of claim 1, wherein the paraffin-based mineral oil has a kinematic viscosity at-40 ℃ of less than 1500mm 2 /s.
  3. 3. The radar system coolant of claim 1, wherein the paraffinic mineral oil has a pour point of less than-65 ℃.
  4. 4. The radar system coolant of claim 1, wherein the cycloalkyl mineral oil has a kinematic viscosity at-40 ℃ of less than 2500mm 2 /s.
  5. 5. The radar system coolant of claim 1, wherein the cycloalkyl mineral oil has a pour point of less than-65 ℃.
  6. 6. The cooling liquid for a radar system according to claim 1, wherein the mass ratio of the base oil to the additive is 100:0.1 to 1.0.
  7. 7. The cooling liquid for radar system according to claim 1, wherein the additive is an antioxidant and/or a light stabilizer.
  8. 8. The cooling liquid for radar system according to claim 7, wherein the antioxidant is a phenolic antioxidant and/or an aminic antioxidant, and/or the light stabilizer is one or a combination of two or more selected from the group consisting of benzophenone, salicylic acid, benzotriazole, and hindered amine derivatives.
  9. 9. A method for preparing the cooling liquid for the radar system according to one of claims 1 to 8, which is characterized by comprising the steps of mixing paraffin-based mineral oil and cycloalkyl mineral oil, heating to 60-80 ℃, adding an additive, and stirring.
  10. 10. Use of the cooling liquid according to any one of claims 1 to 8 for cooling radar systems in low temperature environments.

Description

Cooling liquid for radar system and preparation method and application thereof Technical Field The invention belongs to the technical field of radar system cooling, and particularly relates to a cooling liquid for a radar system, and a preparation method and application thereof. Background Liquid cooling is becoming a major approach to radar system heat dissipation and is critical to ensure the stability and safety of radar equipment under various environmental conditions. The alcohol solution is the most commonly used cooling medium for radar equipment at present due to low freezing point, low corrosiveness, higher specific heat capacity and good fluidity. For example, chinese patent CN112226213A discloses a low-conductivity dielectric cooling liquid for an ethylene glycol type phased array radar, which is prepared from the following raw materials, by weight, 66-68 parts of ethylene glycol, 32-34 parts of deionized water, 2.0-4.5 parts of an organic nonionic composite corrosion inhibitor, 0.08-0.16 parts of an organic nonionic rubber protective agent, 0.01-0.02 parts of a scale inhibitor and 0.002-0.003 parts of a defoaming agent. The cooling liquid has low conductivity, can realize corrosion protection on multi-metal materials and welding flux of liquid cooling systems such as radars and the like, and has good non-metal adaptability and long service life. Chinese patent CN109762533A discloses a multi-effect low-foam organic type radar cooling liquid which is prepared from the following raw materials, by weight, 44-95 parts of ethylene glycol, 5-56 parts of deionized water, 1.0-4.5 parts of an organic composite corrosion inhibitor, 0.1-0.5 part of a pH buffer, 0.08-0.16 part of a rubber protective agent, 0.01-0.02 part of a scale inhibitor, 0.00023-0.00028 part of a colorant and 0.002-0.003 part of a defoaming agent. The cooling liquid has small foaming, can realize corrosion protection on multi-metal materials and welding flux of a liquid cooling system such as a radar and the like, and has good non-metal adaptability and long service life. However, an alcohol solution as a cooling medium oxidizes under high temperature and high load operation conditions to produce a mixed acid with erosive effects, which is more corrosive than tap water without the addition of cooling fluid. In addition, the low temperature resistance of the radar cooling liquid reported in the prior art still cannot meet the cooling requirement of the radar under the extremely low temperature condition. Therefore, it is imperative to develop a cooling liquid with excellent comprehensive performance, which satisfies the requirements of high and low temperature tolerance, heat transfer, safety, electrical insulation, material compatibility and environmental protection. Disclosure of Invention In view of the defects in the prior art, the invention provides a cooling liquid for a radar system, and a preparation method and application thereof. The cooling liquid has the characteristics of excellent high-low temperature tolerance, high oxidation stability, good electrical insulation performance, good heat transfer performance, good material compatibility and environmental protection, can be used for effectively cooling a radar system, can be used for corrosion protection of multi-metal materials and welding flux in a radar liquid cooling system, has long service life and simple preparation method, and is suitable for industrial production. In a first aspect, the invention provides a cooling liquid for a radar system, which comprises base oil and an additive, wherein the base oil comprises 80-100 wt% of paraffin-based mineral oil and 0-20 wt% of naphthenic base mineral oil based on the total weight of the base oil, the paraffin-based mineral oil has a weight average molecular weight of 250-300 g/mol, and the naphthenic base mineral oil has a weight average molecular weight of 260-320 g/mol. In some embodiments, the paraffin-based mineral oil has a kinematic viscosity at-40 ℃ of less than 1500mm 2/s. In some embodiments, the paraffinic mineral oil has a pour point of less than-65 ℃. In some embodiments, the naphthenic mineral oil has a kinematic viscosity at-40 ℃ of less than 2500mm 2/s. In some embodiments, the naphthenic mineral oil has a pour point of less than-65 ℃. On the one hand, the higher the weight average molecular weight of the mineral oil is, the higher the kinematic viscosity of the cooling liquid at-40 ℃ is, and the higher the pour point is, on the other hand, if the kinematic viscosity of the mineral oil at-40 ℃ is too low, the flash point of the cooling liquid is lower, the high temperature cannot be resisted, the safety of the cooling liquid is at a higher risk, and if the kinematic viscosity at-40 ℃ is too high, the low-temperature viscosity of the cooling liquid is higher in a low-temperature area, and the pumpability of the cooling liquid is more difficult in the system starting process. The paraffin-based mineral oil and t