[Industry News] Within the ultra-high vacuum chambers of semiconductor fabs and the microscopic worlds of particle accelerators and electron microscopes,
vacuum level directly dictates the ultimate performance and yield of equipment. Conventional diffusion pump oils frequently grapple with the "three chronic ailments" of
high saturated vapor pressure, thermal cracking leading to carbon deposits, and insufficient oxidation resistance under high-temperature, high-vacuum conditions. This results in failure to reach target vacuum levels, backstreaming contamination of wafers, and shortened maintenance cycles. Creating a vacuum fluid that is "low enough in vapor pressure, strong enough in thermal stability, and long enough in service life" at the molecular level has thus become a core proposition urgently needing resolution in high-end manufacturing.
Addressing this "ultimate vacuum" pain point,
IOTA (Anhui IOTA Silicone Oil Co., Ltd.) officially launches
IOTA 702 Diffusion Pump Oil. Based on the precision molecular design of
phenylmethyl siloxane (C₆H₅/CH₃-Si-O structure), this product—characterized by being "colorless, transparent, ultra-pure, and long-lasting"—emerges as the "molecular-level sealing cornerstone" for high-vacuum sectors such as semiconductors, atomic energy, and precision optics.
Molecular Precision: The Ultimate Expression of Phenylmethyl Siloxane
The core competitiveness of IOTA 702 stems from its unique molecular architecture and stringent process control:
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Ultimate Low Vapor Pressure (< 1.333×10⁻⁴ Pa): At 25°C, both saturated vapor pressure and ultimate vacuum reach < 1.333×10⁻⁴ Pa (10⁻⁶ Torr level). This means that even under high-temperature, high-speed jetting conditions, oil molecules scarcely "escape" to the high-vacuum side,彻底 (completely) eliminating the "backstreaming contamination" issue plaguing conventional oils. It provides an absolutely clean vacuum environment for semiconductor epitaxy and atomic layer deposition.
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Exceptional Thermal Stability (Flash Point 195°C, Freezing Point -40°C): The incorporation of phenyl groups (C₆H₅) into the molecular structure significantly elevates the heat resistance limit of the Si-O backbone. A flash point of 195°C (open cup) ensures the oil resists cracking and coking during prolonged high-temperature operation. The ultra-low freezing point of -40°C guarantees start-up fluidity in extreme cold, covering an operating temperature range of -40°C to 50°C—truly an "all-weather" vacuum fluid.
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Precise Rheological Control (Viscosity 45±3 cs, Refractive Index 1.5100-1.5300): Viscosity is strictly maintained at 45±3 cSt at 25°C, balancing pumping speed and oil reflux. The precise calibration of relative density (1.08) and refractive index (1.5100-1.5300) provides equipment engineers with reliable parameters for process window optimization.
Application Penetration: From Chip Manufacturing to Atomic Exploration
The application boundaries of IOTA 702 cover the most demanding frontiers of vacuum technology:
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Semiconductor & Electronic Tube Industry: Providing 10⁻⁶ Pa level ultimate vacuum for front-end processes (ion implantation, PVD/CVD), ensuring thin-film purity and device reliability.
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High-Vacuum Coating & Display Manufacturing: Serving as the core vacuum medium for optical coatings, ITO conductive films, and OLED vapor deposition, guaranteeing film uniformity and device longevity.
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Atomic Accelerators & Electron Microscopes: Providing a "vibration-free, contamination-free" stable ultra-high vacuum environment for particle physics experiments, Scanning Electron Microscopes (SEM), and Transmission Electron Microscopes (TEM), empowering scientists to probe the microscopic extremes of matter.
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High-Vacuum Metallurgy & Lamp Industry: Utilizing pure vacuum to prevent gaseous impurities in specialty metal refining and high-end lighting encapsulation, enhancing product quality.
The IOTA Quality DNA: Safe, Durable, Easy Logistics
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Extended Lifespan: Thanks to exceptional oxidation and thermal-cracking resistance, IOTA 702 boasts a shelf life of up to 2 years under standard usage, drastically reducing oil change frequency and downtime costs.
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Safe Transportation: Classified as non-hazardous for transport and storage. Available in multiple packaging formats—1kg plastic bottles, 5kg/25kg/50kg plastic drums, and 200kg iron drums—flexibly catering to needs from laboratory R&D to mass production.
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Rigorous Storage: Stored in warehouses protected from moisture, humidity, and direct sunlight, within an indoor temperature range of -40~50°C, ensuring pristine quality upon delivery.
Industry Expert Insight:
Experts note that with the explosive development of third-generation semiconductors, quantum computing, and Extreme Ultraviolet (EUV) lithography, demands for "ultimate vacuum" have progressed from "micro-scale" to "nano-scale" and even "atomic-scale" precision. The launch of IOTA 702 not only fills a domestic gap in high-performance silicon-based vacuum fluids but also provides downstream high-end equipment manufacturers with a safe, durable, and controllable vacuum solution through its dual advantages of "ultra-low vapor pressure + wide-temperature thermal stability." This milestone signifies that domestic silicon-based specialty fluid materials now possess the capability to compete head-to-head with imported brands in the global high-end vacuum supply chain.
