When the ice edges of the Arctic shipping route have not yet melted, the instruments at the Antarctic research station have been operating stably in the extreme cold of -130 ℃ - the "behind the scenes hero" behind this is the ultra low temperature resistant ethyl silicone oil (polydiethylsiloxane, CAS: 63148-61-8).


According to the latest data of the industry, with the unique molecular structure of the side chain ethyl of ethyl silicone oil instead of traditional methyl, the conventional model can achieve -70 ℃ non solidification and non gel, and the special grade product can maintain liquid fluidity at -130 ℃ extreme low temperature, far exceeding the working lower limit of -50 ℃~-60 ℃ of ordinary methyl silicone oil. This' frost resistance gene 'has quickly made it a must-have material for high-end fields such as aerospace, polar research, and ultra-low temperature refrigeration.


The market is expanding at an astonishing rate. Industry insiders predict that the polar industrial ethyl silicone oil market will continue to expand at an annual growth rate of 12% in the next five years. In 2024, the market size of ethyl hydrogen silicone oil in China has reached 274 million yuan, and the global market size has reached 1.092 billion yuan. It is expected that the global market size will climb to 1.865 billion yuan by 2030.


On the application side, ethyl silicone oil has fully penetrated: spacecraft valves and low-temperature hydraulic systems rely on it to ensure stable operation in extreme space environments; Antarctic drilling equipment and meteorological sensors use it as a lubricating protective layer; -The 60 ℃ ultra-low temperature compressor and cold chain equipment cannot do without its protection. More importantly, ethyl silicone oil can be completely miscible with mineral oil and synthetic oil, and can be directly integrated into existing industrial systems without the need for large-scale equipment modification, greatly reducing the application threshold.


It is worth noting that in January 2026, Shenzhen Debon Interface Materials applied for a patent for thermal conductive silicone grease for aerospace electronic equipment, with ethyl silicone oil as the core component, designed specifically to meet the heat dissipation needs in extreme space environments. From extreme cold to space, ethyl silicone oil is writing a new chapter in the specialty silicone industry with its characteristics of "ultra purity, low volatility, and high stability".


At present, the main production areas of ethyl silicone oil in China are concentrated in Hubei, Jiangsu, Shanghai and other places. Enterprises such as Hubei Fangde New Materials, Hubei Jusheng Technology, and Nanjing Bermuda Biotechnology have formed industrial clusters. With the accelerated development of Arctic shipping routes and exploration of polar resources, the imaginative space of this track is far from reaching its limit.