Today, China's latest generation polar icebreaking research vessel, "Xuelong 4" (Snow Dragon 4), successfully reached the waters near Zhongshan Station after traversing the dense pack ice zone of the Ross Sea in Antarctica. A key highlight of this voyage was the first full-scale application of an "Ultra-Low Temperature Self-Lubricating Phenyl-Fluorosilicone Smart Skin" on critical parts of the hull. Jointly developed by the Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, and Jiangnan Shipyard, this material maintained excellent flexibility and anti-ice adhesion capabilities in extreme environments as low as -85°C, marking that China's surface engineering materials for polar equipment have reached a world-leading level. According to the chief materials scientist on board, extreme low temperatures in the Antarctic winter and high-latitude seas often cause traditional hull coatings to become brittle and peel off, while seawater easily freezes on the hull surface, significantly increasing navigation resistance or even damaging the structure. The new smart skin ingeniously utilizes the characteristic of high-phenyl-content siloxane chains to maintain a low glass transition temperature (Tg < -110°C) even at ultra-low temperatures, combined with the ultra-low surface energy advantage of the fluorosilicone rubber surface, achieving the dual effect of being both "anti-freeze and ice-repellent." Field test data showed that in a -80°C environment, the elongation at break of the skin remained as high as 450%, and the shear strength of ice on its surface was only 1/20th of that on ordinary epoxy coatings, reducing the energy consumption of "Xuelong 4" by approximately 15% when navigating through thick ice. Even more remarkably, the skin features a "micro-damage self-healing" function. When the hull incurs micro-cracks from scraping against sharp ice blocks, low-temperature curing repair agents encapsulated within the material are instantly released to fill the cracks, preventing seawater infiltration and corrosion of the steel plates. This technological breakthrough not only significantly extends the service life of polar research vessels but also provides a novel solution for the external wall protection of future long-term unmanned research stations in Antarctica. The Chinese National Arctic and Antarctic Administration announced that this technology will be rapidly promoted to all Chinese polar exploration equipment and thermal control systems for deep space detectors.
Methyl phenyl vinyl silicone rubber IOTA 3120