Iota Silicone Oil (Anhui) Co., Ltd
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In a significant technological breakthrough, a new patent for a "Hydrogen Silicone Oil-CO₂ Composite Foaming Agent and Preparation Method" has been granted, marking a paradigm shift in the production of silicone foam materials.
The Innovation
The new technology utilizes supercritical carbon dioxide as a foaming agent, combined with a hydrogen silicone oil base featuring a hydrogen mass fraction of 0.8% to 1.5%. Unlike traditional chemical foaming agents that decompose into potentially harmful residuals, this method relies on physical phase changes.
Key Advantages
The composite system incorporates surface-modified nano-silica and non-ionic surfactants. The nano-silica particles, with diameters ranging from 10 to 50nm, are modified using silane coupling agents to graft CO₂-philic functional groups such as amino, carboxyl, or hydroxyl groups.
Impressive Performance Metrics
The resulting foam materials demonstrate exceptional properties:
Average cell diameter ≤ 50μm
Compression strength ≥ 0.5MPa
Cell uniformity deviation ≤ 5%
Expansion ratio ≥ 5 times
Environmental Impact
This technology enables the recycling of CO₂ through condensation recovery systems, transforming a greenhouse gas into a valuable industrial resource. The process eliminates the need for volatile organic solvents and meets the stringent requirements of the "dual carbon" era.
Industry Implications
This breakthrough opens new applications for hydrogen silicone oil in lightweight construction materials, automotive components, and aerospace insulation, areas where traditional foam materials have struggled to balance performance and environmental compliance.
