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IOTA BJ510 is a methyl phenyl polysiloxane polymer, classified as a single-phenyl component phenyl silicone oil. Within the silicone oil product system, it is designed with a clear performance focus, emphasizing thermal stability, low volatility, and radiation resistance. This targeted design makes it suitable for industrial scenarios where material safety and performance predictability are critical. Unlike multi-phenyl silicone oils, its concentrated composition reduces uncertainty, ensuring consistent performance in specific applications.
The product demonstrates strong thermal stability, with a flash point of ≥274°C, a fire point of ＞343°C, and an autoignition temperature of 482°C. These values indicate minimal fire risk in high-temperature environments, making it ideal for settings with strict fire safety requirements. Its low volatility is another key advantage: under 250°C for 4 hours, the volatile content is only 2.5%, ensuring long-term performance stability by minimizing component loss. Additionally, its inherent inertness means it does not corrode metals or adversely affect seals in pressure reducers, valves, or instruments—a critical feature for extending the lifespan of hydraulic systems.
In industrial use, IOTA BJ510’s compressibility makes it suitable for shock absorption and motion damping, such as in hydraulic lightning arresters and buffers. Its radiation resistance is particularly notable, with a tolerance of 1.7×10⁸ rads, allowing it to function in radiation-exposed environments like nuclear power plants, including hydraulic drive valves and instruments. The product’s thermal conductivity remains relatively constant across a wide temperature range, enabling it to serve as a high-temperature heat carrier for insulation, lubrication, damping, shock absorption, and dust prevention. It also acts as a base oil for high-temperature lubricants and greases.
The specific gravity ranges from 0.985 to 1.090 (25℃/15.6℃), and the viscosity at 25℃ spans 50–3000 mm²/s, with a viscosity-temperature coefficient of 0.655. These parameters define its flow characteristics under varying temperatures. Under 5000 psi, the compression rate is 2.8% with a bulk modulus of 179,000; under 20000 psi, the compression rate increases to 7.95% with a bulk modulus of 253,000. These values reflect its deformation capacity under pressure, ideal for damping or buffering applications. The specific heat at 100℃ is 0.405, and the thermal conductivity at 50℃ is 0.00036 g-Cal/cm²-sec-℃, supporting its role as a heat carrier.
