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Petersburg chemists have created a silicone coating for ships and spacecrafts

Chemists at St. Petersburg State University have developed catalysts based on iridium, which help to increase the resistance of silicone to high temperatures.
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The most important characteristic of the material is heat resistance. At room temperature, silicones usually remain in a liquid state. Catalysts — complex compounds of platinum — are added to make them solid. Use of such catalysts lead to instant solidification of silicones, but the material thus obtained has relatively low thermal stability — it is resistant to heating of up to 200 °C.

Members of St. Petersburg State University developed a new composition of catalysts based on organic compounds of metal iridium. The catalyst prevents instant solidification of silicones and the thermal stability of the resulting coating increases to 320 °C.

New silicones glow under ultraviolet light. It makes it possible to determine the thickness of the coating and add silicones where necessary.

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