(October 21, 2026) Recent developments in the organic silicon functional materials market indicate that hydrogenated silicone oil, as a key crosslinking agent in additionative silicone rubber and a crucial intermediate in silicon-hydrogen addition reactions, is experiencing ongoing changes in market demand patterns. Traditional applications such as textile waterproofing and building sealing remain stable, while emerging fields like photovoltaic encapsulation, power battery sealing, and data center immersion liquid cooling are driving rapid growth in demand. The industry’s focus is gradually shifting from scale-based competition to technological competition involving high purity, low ion content, and customized products.

Hydrogenated silicone oil, thanks to its reactive Si-H bonds, can undergo addition reactions under catalytic conditions, allowing the production of weather-resistant, insulating, and hydrophobic organic silicon materials. It plays a vital role in the organic silicon industry chain. For a long time, there has been sufficient production capacity for industrial-grade hydrogenated silicone oil in China; however, high-end grades with low volatility and low impurities have previously relied heavily on foreign manufacturers, which has become a weakness in the industry chain.

Since the beginning of this year, several leading Chinese organic silicon companies have been continuously improving their continuous synthesis processes and new catalytic systems. They have made significant progress in precisely controlling hydrogen content, reducing volatility, and minimizing heavy metals and chloride impurities. Some integrated factories have utilized the resources from chlorosilanes to improve product quality while enhancing green production practices and reducing waste emissions. This aligns with the policy goals of green manufacturing in the new materials sector, and many new products have already entered the verification stage with major downstream customers.

Changes in demand are particularly evident. The demand for encapsulation adhesives for photovoltaic modules, flame-retardant silicone for electric vehicle batteries, and potting materials for power devices continues to grow, leading to a steady increase in purchases of high-purity hydrogenated silicone oil. With the rise of AI computing infrastructure and the adoption of immersion liquid cooling solutions, silicone-based insulating coolants have become an important area, creating new markets for hydrogenated silicone oil. Compared to traditional coolants, modified hydrogenated silicone oil systems offer advantages such as low toxicity, good compatibility with cables and seals, and cost benefits. These systems are being tested in supercomputing centers and energy storage stations.

Industry research shows that the market is becoming more fragmented: general grades face pressure from competitive markets, while customized hydrogenated silicone oil products that meet medical, semiconductor, and automotive standards have greater pricing power. Downstream customers no longer focus solely on hydrogen content; they require strict standards regarding batch consistency, aging stability, low ion contamination, and VOC control, forcing manufacturers to improve their entire testing process.

Industry experts predict that the main trends in the hydrogenated silicone oil industry will be clear in the next two years: first, continuing to establish a high-quality certification system, thereby gradually replacing imports in the semiconductor and optoelectronics sectors; second, developing special grades with high hydrogen content, low viscosity, and low ring bodies based on downstream applications; third, further promoting the efficient use of by-products and solvent-free continuous production processes. As the supporting infrastructure for organic silicon industries improves, domestic hydrogenated silicone oil is expected to gain more share in new markets such as renewable energy and computing cooling.