(October 15, 2026) The domestic organosilicon new material industry continues to advance the development of high-performance vinyl silicone oil technologies. The production capacity of low-ring body and low-volatile electronic-grade products is steadily increasing, accelerating the process of import substitution. This provides essential raw materials for the fields of new energy vehicles, semiconductor packaging, and high-performance liquid silicone rubber (LSR).

Vinyl silicone oil is a polysiloxane in which the molecular chain ends or side chains contain reactive vinyl groups. It serves as the core adhesive in additionitious silicone gels, potting adhesives, and liquid silicone rubber. Through the addition reaction involving the vinyl group, the curing process produces no small molecule by-products, and the shrinkage rate is low. The final product possesses excellent insulating, temperature-resistant, and aging resistance properties, making it an indispensable functional material in high-end manufacturing processes. Ordinary industrial-grade products are used mainly as release agents or ordinary silicone rubbers. In contrast, electronic-grade vinyl silicone oil requires strict standards regarding ring body residues, ionic impurities, and batch stability. For a long time, the high-end market has relied on foreign supplies.

With the rapid expansion of AI computing power, new energy control systems, and power semiconductors, the market structure has changed significantly. Industry data shows that in 2026, the overall market for vinyl silicone oil in China continued to grow steadily. The demand for high-quality products used in semiconductor IGBT modules, battery sealing, and medical supplies was much higher than that for ordinary products. Downstream customers have higher requirements for low volatility and low ring body levels of the materials, in order to meet international environmental regulations such as REACH and RoHS, reduce secondary sulfurization processes, and lower production energy consumption and defects.

Chinese organosilicon enterprises have overcome the challenge of stable production of high-purity vinyl silicone oil through continuous synthesis processes and multi-stage molecular distillation purification techniques. New products can achieve precise control over the vinyl content, narrow molecular weight distribution, and significantly reduced ring body levels. This improves product consistency and makes them suitable for applications such as chip packaging thermal gels, high-voltage device potting, and medical LSR products. Some enterprises have established intelligent production lines that can customize viscosity and vinyl content specifications according to customer needs, thereby meeting the customized demands of various industries.

Industry experts believe that the domestic vinyl silicone oil industry is shifting from capacity expansion to quality improvement. In the future, the focus of industry competition will be on developing new products such as ultra-high purity grades and branched modified vinyl silicone oils, in order to further narrow the gap with international leading products. As the downstream new energy and semiconductor industries continue to grow, the potential for domestic substitution of high-performance vinyl silicone oil will remain large, helping to ensure the independence and controllability of China’s organosilicon new material industry chain, and promoting the high-quality development of electronic information and new energy industries.