Alkyl silicone oil for data center immersion cooling medium and method of making

By using a micro-reaction continuous flow preparation method, combining plate microchannel reactors and tubular reactors, and controlling reaction conditions, alkyl silicone oil with low Si-H residue was prepared. This solved the problems of low-temperature turbidity and stability of modified silicone oil, and achieved a coolant with high flash point and low viscosity, suitable for immersion cooling systems in data centers.

CN120842580BActive Publication Date: 2026-06-19SHENZHEN ZHIWEITONG TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHENZHEN ZHIWEITONG TECH CO LTD
Filing Date
2025-08-27
Publication Date
2026-06-19

AI Technical Summary

⚠Technical Problem

Existing modified silicone oil coolants are prone to turbidity at low temperatures and have high Si-H bond residue levels, affecting stability and system reliability, and cannot meet the application requirements of data centers under a wide range of climatic conditions.

⚗Method used

A micro-reaction continuous flow preparation method was adopted, which combines a plate microchannel reactor and a tubular reactor to control the reaction temperature and time. A platinum complex catalyst was used to carry out the hydrosilylation reaction, and combined with activated carbon adsorption decolorization and rotary evaporation treatment to prepare alkyl silicone oil with low Si-H residue.

🎯Benefits of technology

An alkyl silicone oil with clear and transparent properties and good fluidity at low temperatures was prepared. It has a high flash point, low viscosity, and low Si-H residue, making it suitable for a wide range of climatic conditions and improving the stability and reliability of the coolant.

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Abstract

This invention provides an alkyl silicone oil for immersion cooling media in data centers and its preparation method, belonging to the field of chemical synthesis technology. The alkyl silicone oil for immersion cooling media in data centers is a mixture of two long-chain alkyl-modified silicone oils, combining the characteristics of both types of products. It has outstanding application characteristics: it is clear and transparent at -50°C while still retaining fluidity, has a flash point above 200°C, and a viscosity below 25 mm (at 40°C). 2 The continuous flow micro-reaction method provided by this invention yields alkyl silicone oils with a SiH residue of less than 0.1 ppm and a reaction time of 3-5 min, which effectively improves the performance and production efficiency of the obtained alkyl silicone oils.
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