The phenyl silicone oil industry is accelerating its upgrading process, and the pace of domestic substitution in high-end fields is also speeding up. 

1.Core Performance Breakthrough: Breaking the Boundaries of Ordinary Silicone Oil Applications
As a high-end category within the organic silicone material system, phenyl silicone oil has achieved a leapfrog breakthrough in performance due to its unique molecular structure. It has completely shattered the application limitations of ordinary methyl silicone oil. Compared to conventional silicone oil, phenyl silicone oil has significantly increased the upper limit of heat resistance to 380℃, and still maintains good flexibility at ultra-low temperatures of -70℃, ensuring compatibility with both extremely cold and extremely hot extreme working conditions. In addition, it has excellent optical refractive index, radiation resistance, and electrical insulation properties. Its dielectric properties are stable, and its resistance to aging and radiation is outstanding. It perfectly meets the strict requirements of the high-end manufacturing sector for special materials, becoming an indispensable core additive in strategic fields such as aerospace, electronic packaging, photovoltaic new energy, and nuclear power, completely breaking away from the low-end application pattern of ordinary silicone oil that can only be used for routine lubrication and demolding. 

2. Standard System Improvement: Industry Entry Barriers Continuously Rise
As the requirements for material quality in downstream high-end application scenarios continue to become more refined, the domestic phenyl silicone oil industry's standard system has been accelerating its improvement, completely abandoning the previous simplistic and broad evaluation model based on a single indicator. Since 2025, the industry's leading institutions have successively introduced a number of technical specifications for high-end phenyl silicone oils, targeting specific fields such as electronic packaging and aerospace sealing, adding over a dozen core indicators such as ion migration rate, thermal mechanical fatigue life, interface bonding strength, and metal impurity content. Especially for ultra-high-purity electronic-grade products, it clearly requires that the content of key metal ions be controlled within an extremely low range, fully aligning with international high-end material standards. The upgrade of the standard system has directly raised the industry's entry barriers, forcing the industry to eliminate low-end production capacity, promoting the overall industry to transform towards a more refined and high-quality direction, and also laying a solid foundation for domestic materials to participate in global competition. 

3. Expansion of high-end applications: Continuous growth in demand from strategic industries
Currently, the application scenarios of phenyl silicone oil are continuously penetrating into the high-end core areas. The demand from downstream strategic industries has entered a stage of rapid expansion. In the field of electronic information, with the rapid popularization of AI chips and advanced packaging technologies, high-purity phenyl silicone oil, as the core component of chip bottom fillers and packaging materials, with its low stress, high transparency, and high-temperature resistance characteristics, ensures the stable operation of chips under high-frequency and high-temperature conditions, and the year-on-year growth rate of demand has remained in the double digits for several consecutive years; in the photovoltaic industry, the iterative upgrade of N-type battery modules has led to the use of phenyl silicone oil as an additive in the film, effectively improving the anti-PID performance and UV yellowing resistance of the modules, extending the service life of photovoltaic modules, and meeting the high-end demands of double-sided glass modules and back-contact batteries; in the aerospace field, its advantages of low volatility, radiation resistance, and extreme temperature difference resistance have become key materials for spacecraft sealing and satellite composite material molding, and the demand for these materials has continued to strengthen. 

4. Acceleration of Domestic Substitution: Steady Progress in Industrial Autonomy
Driven by both industrial policy guidance and technological breakthroughs in research and development, the domestic phenyl silicone oil industry has broken the long-standing situation where high-end products relied on imports. The process of domestic substitution has been comprehensively accelerated. The domestic research and development teams focused on core technologies such as phenyl monomer synthesis, ultra-clean purification, and flexible production, successfully overcoming technical challenges such as the stability of high phenyl content products and the control of narrow molecular weight distribution. They achieved full coverage of all categories from low phenyl to high phenyl, from general grade to electronic grade, and aerospace grade. At the same time, the industry's production capacity structure has continued to improve. The production capacity of low-end general-purpose silicone oil has gradually shrunk, while the production capacity of high-end special phenyl silicone oil has steadily expanded. The product purity and performance indicators have gradually caught up with international leading levels, and the supply cycle and cost advantages have become increasingly obvious. It not only meets the needs of domestic high-end industries but also gradually opens up the international market, promoting China's transformation from a production powerhouse of phenyl silicone oil to a quality power.