Hits: 2645 img
IOTA BJ510 is a methyl phenyl polysiloxane polymer, classified as a single-phenyl-group phenyl silicone fluid. It appears as a colorless and transparent liquid, making it easy to monitor in any system where visual inspection of the fluid condition is required. The specific gravity of IOTA BJ510 ranges from 0.985 to 1.090 at 25°C/15.6°C, placing it in a moderate density range that is well-suited for hydraulic system formulations. With a viscosity range of 50 to 3000 mm²/s at 25°C, the product offers considerable flexibility for users who need to match fluid properties to specific operational requirements. The viscosity-temperature coefficient stands at 0.655, indicating that viscosity changes with temperature in a predictable and manageable manner.
One of the standout features of IOTA BJ510 is its thermal stability. The flash point is rated at 274°C or higher, the ignition point exceeds 343°C, and the auto-ignition temperature reaches 482°C. These figures collectively demonstrate that under normal industrial operating temperatures, the risk of combustion is virtually negligible. The volatiles content, measured at 250°C over a 4-hour period, is only 2.5%, which means the fluid maintains its integrity even under prolonged high-temperature exposure. The pour point of -57°C ensures that the fluid remains fluid and functional in cold environments or during low-temperature start-up conditions, eliminating concerns about solidification or excessive thickening.
IOTA BJ510 exhibits relatively high compressibility, which makes it well-suited for shock absorption and motion damping applications. Under 5000 psi, the compressibility is 2.8% with a bulk modulus of 179,000. Under 20000 psi, the compressibility increases to 7.95% with a bulk modulus of 253,000. These data points provide engineers with reliable parameters for designing hydraulic dampers, buffers, and vibration isolation systems. The inherent chemical inertness of the product means it does not corrode metals and does not adversely affect seals commonly used in pressure reducers, valves, and instruments. This is a critical advantage for precision equipment that requires long-term, maintenance-free operation.
The radiation resistance of IOTA BJ510 is notable, with a rated value of 1.7 × 10⁸ rads. This level of performance makes the product appropriate for use in nuclear power plant hydraulic drive valves, instruments, and other applications involving radiation exposure. In terms of thermal performance, the thermal conductivity at 50°C is 0.00036 g-Cal/cm²-sec-°C and remains relatively constant across a wide temperature range. The specific heat at 100°C is 0.405, supporting its role as an effective heat transfer medium. IOTA BJ510 can serve as a base stock for high-temperature lubricating oils and greases, and it is also used in insulation, lubrication, damping, shock absorption, and dust-proofing applications where high-temperature heat carrier fluids are required.
