(August 7, 2026) Recently, new developments have emerged in the domestic field of silicone intermediates. High-purity hydroxy silicone oil has been further optimized in key indicators such as precise regulation of hydroxyl content, control of ring residuals, and batch stability. High-end models targeting new energy, electronic packaging, building seals, and textile additives are gradually scaling up, accelerating the transformation of the domestic hydroxyaline silicone oil industry from general capacity to high value-added specialty products.

Hydroxy silicone oil, also known as terminated hydroxyl polydimethylsiloxane, is the core intermediate in the silicone industry chain. Relying on active hydroxyl groups at both ends of molecules, it can undergo condensation crosslinking reactions. It is a key basic raw material for room-temperature vulcanized silicone rubber, sealants, electronic potting materials, silicone rubber structure control agents, and fabric finishing agents. It is widely used in PV energy storage, new energy vehicle electronic devices, semiconductor packaging, building materials, textiles, daily chemicals, and many other sectors.

Industry research data shows that domestic hydroxy silicone oil production capacity is sufficient, but there has long been structural differentiation: general-purpose hydroxy silicone oil has ample capacity, while high-end products with electronic-grade, low volatility, and low ring residue are insufficient. Batch fluctuations, high volatile content, and difficult control of trace impurities have always been major pain points restricting downstream high-end applications, with some high-demand scenarios long dependent on imported raw materials.

Since 2026, multiple domestic silicone companies have joined forces with research institutions to upgrade continuous synthesis processes, catalytic systems, and low molecular weight removal technologies. The new generation of products enables precise adjustment of hydroxyl content across a wide range, significantly narrowing batch deviations in hydroxyl content; Residual D4/D5 rings and metal ion impurities are effectively controlled. Some electronic-grade products have total metal ion content kept below 1 ppm, and volatile content indicators meet the long-term service requirements of new energy electronic devices. They can be adapted to harsh conditions such as liquid cooling potting for AI servers, power device packaging, and photovoltaic module sealing.

Meanwhile, green production transformation is being advanced simultaneously, with halogen-free catalytic systems gradually replacing traditional acidic processes, improving raw material conversion rates, reducing comprehensive energy consumption per ton of product, and increasing by-product recycling rates, meeting the clean production requirements of the new materials industry under the dual carbon goals. With the implementation of T/FSI group standards, industry standards for terminal hydroxyl content, acid value, color, and volatile content have been further improved, forcing the industry to upgrade its overall quality control capabilities.

On the downstream side, the expansion of the new energy industry has driven rapid growth in demand for high-end hydroxyasilicon oil. The reliability requirements for sealing, potting, and protective materials in photovoltaics, energy storage, new energy vehicle electronics, and semiconductor packaging sectors continue to rise, driving up demand for low-volatility, high-purity hydroxyasilicon oil. The textile industry maintains stable procurement of small molecule hydroxy silicone oil structure control agents and softening modification raw materials. Market forecasts indicate that in 2026, domestic apparent consumption of hydroxysilicone oil will continue to maintain double-digit growth, with the proportion of high-end products steadily increasing and the market size steadily rising.

Industry insiders say the industry has moved beyond the stage of simply competing on capacity; customized development, batch stability, low impurities, and green low-carbon have become core competitive factors. Longer lead times and rising costs for imported products have created a certification and replacement window for domestic hydroxy silicone oil. Future industry competition will focus on electronic-grade, medical-grade, photovoltaic-specific grades, and other specialized grades. Companies with full-process synthesis, deep de-removal, full testing, and rapid customization service capabilities will see greater market opportunities.