High-temperature resistant silicone oil is undergoing a green process revolution, with refining technology solving the problems of environmental protection and performance


1.Industry pain point: Traditional craftsmanship is Mired in a dual predicament of environmental protection and performance
High-temperature resistant silicone oil, as a key material for high-end manufacturing, has long been constrained by the limitations of traditional production processes. During the synthesis process, the residual low-molecular-weight cyclic impurities cause the product's volatile matter to reach as high as 1% to 3%, not only reducing core properties such as insulation and lubrication, but also potentially triggering risks such as electronic component failures. Meanwhile, the traditional neutralization and water washing process generates 150 to 200 tons of acidic and alkaline wastewater for each ton of silicone oil. The emulsification loss also reduces the yield by 5% to 8%. The environmental protection pressure and cost burden have become the bottleneck for the development of the industry. With the upgrading of material purity requirements in fields such as new energy and aerospace, technological innovation has become an urgent matter.

2. Technological breakthrough: The combined adsorption-distillation process achieves green refining
The recently unveiled new refining technology has resolved the contradiction between environmental protection and efficiency through an innovative path of "magnetic mesoporous adsorption + CO₂ swelling assistance + short-path distillation". This process employs magnetic mesoporous adsorbents with a surface area exceeding 1000m²/g. Their gradient pore size design can precisely capture small molecule impurities, and the EDTA groups can chelate metal ion catalyst residues. After being exposed to near-
infrared light, they can be regenerated and reused. In combination with the CO₂ swelling technology, the viscosity of silicone oil is reduced by 70%, the diffusion rate of impurities is significantly increased, and the load of subsequent short-path distillation is greatly reduced, achieving efficient purification.

3. Performance Upgrade: Multiple indicators meet the standards of high-end applications
Experimental data shows that the quality of high-temperature resistant silicone oil processed by the new process has achieved a leapfrog improvement: the volatile matter has dropped from 1% to 3% in the traditional process to below 0.3%, the chlorine content is controlled within 50ppm, and the content of terminal hydroxyl groups is less than 0.05mmol/g. After continuous operation for 2000 hours in a high-temperature environment of 300℃, the viscosity change rate is only 2.1%, which is far better than the over 15% of traditional products. These indicators have enabled it to successfully adapt to high-end fields such as electronic packaging and medical equipment, which have strict requirements for purity and stability.

4. Industrial Value: Promoting green manufacturing and cost optimization
The implementation of this green process has demonstrated multiple benefits: the amount of wastewater discharged is reduced by over 90% compared to traditional processes, the adsorbent can be reused more than 20 times, and the overall production cost is reduced by 12% to 18%. Industry analysis indicates that with the large-scale application of this technology, it will accelerate the domestic substitution process of high-temperature resistant silicone oil and help achieve the goal of reducing the proportion of domestic high-end silicone oil imports to below 35% by 2030.