Fumed Silica (Grade – AC 200)

Fumed Silica (Grade – AC 200), Fumed silica, such as Erosil-NV/200, is a type of amorphous, nano-sized silica produced by the vapor-phase hydrolysis of silicon compounds. Fumed Silica (Grade – AC 200) is a type of silicon dioxide that has undergone a process called fumed or pyrogenic silica. This process results in a fine, high-surface-area powder with various applications in different industries.

In the context of Greases and Lubricants, Fumed Silica can be used for several purposes:

Thickening Agent: Fumed silica is often used as a thickening or gelling agent in greases and lubricants. It helps to improve the viscosity of the lubricating fluid, making it more effective in providing a protective film between moving parts.

Rheology Modifier: Fumed silica can modify the rheological properties of greases and lubricants. It influences the flow behavior, shear thinning, and thixotropy of the lubricant, which can be essential for specific applications and equipment.

Anti-settling Agent: Fumed silica helps prevent settling of solid additives in lubricants. It can enhance the suspension of additives, ensuring a more uniform distribution throughout the lubricant, which is crucial for maintaining consistent performance.

Reinforcement: Fumed silica can reinforce the structure of greases, improving their mechanical properties. This is particularly important in high-stress applications where the lubricant needs to withstand heavy loads and extreme conditions.

Corrosion Protection: Fumed silica can contribute to the corrosion protection properties of greases and lubricants by forming a protective barrier on metal surfaces. This is especially important in applications where metal-to-metal contact occurs, as it helps prevent wear and corrosion.

Improved Heat Resistance: Fumed silica can enhance the thermal stability of greases and lubricants, allowing them to perform effectively at high temperatures. This is critical in applications such as automotive engines, industrial machinery, and other high-temperature environments.

Sealant and Gasket Applications: Fumed silica is sometimes used in the formulation of sealants and gaskets for its ability to improve the viscosity and thixotropy of these materials. It helps create a more effective barrier against moisture and contaminants.

Adhesive Applications: In some cases, fumed silica is added to lubricating greases used in adhesive applications to modify the viscosity and improve adhesion properties.

When using fumed silica in greases and lubricants, it’s essential to consider the specific requirements of the application, including temperature, load, and environmental conditions, to ensure optimal performance. Additionally, formulations may need to be fine-tuned based on the desired characteristics of the final product.