The harmfulness of silicone oil
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The harmfulness of silicone oil: (1) the lubricity of silicone oil is not good, especially to the steel friction pair. (2) silicone oil has a high Coefficient of thermal expansion (which may cause overpressure problems) . (3) high gas solubility (difficult to design gas sealing device) . (4) certain hygroscopicity (electrical performance drops sharply after water content is higher than 100 × 10 ~ (-6)) . (5) low surface tension (easy to leak from the machine)
