Introduction
LV Lomas Aerosil is a leading distributor of specialty chemicals and ingredients, including AEROSIL® products. AEROSIL® is a fine, white, amorphous powder consisting of primary particles ranging from approximately 7 to 40 nm in size, depending on the specific surface area of the product. This unique material has a wide range of applications across various industries, thanks to its exceptional properties and versatility. In this article, we will explore the different types of AEROSIL® products available, with a focus on Aerosil 200 and Evonik Aerosil 84.
AEROSIL® 200
Aerosil 200 is one of the most widely used grades of AEROSIL® products. It is a hydrophilic fumed silica with a specific surface area of around 200 m²/g. This high surface area gives Aerosil 200 excellent reinforcing and thickening properties, making it ideal for a wide range of applications in industries such as adhesives, coatings, and sealants.
In adhesive formulations, Aerosil 200 is used to improve the rheological properties and thixotropy of the adhesive. Its high surface area allows for strong interactions with the adhesive matrix, resulting in improved strength and durability of the bond. Additionally, Aerosil 200 can act as a thickening agent, enhancing the viscosity and stability of the adhesive formulation.
In coatings, Aerosil 200 is often used as a matting agent to create a smooth, matte finish. Its high surface area and particle size distribution help to control the gloss level of the coating, providing a uniform and aesthetically pleasing surface. Furthermore, Aerosil 200 can improve the scratch resistance and durability of the coating, making it suitable for high-performance applications.
In sealants, Aerosil 200 is utilized to enhance the thixotropic behavior and sag resistance of the sealant. Its high surface area promotes strong interactions with the polymer matrix, improving the mechanical properties of the sealant. Additionally, Aerosil 200 can act as a reinforcing filler, increasing the strength and flexibility of the sealant.
Evonik Aerosil 84
Evonik Aerosil 84 is another popular grade of AEROSIL® products, known for its unique properties and applications. This hydrophobic fumed silica has a specific surface area of approximately 80 m²/g, making it suitable for a wide range of specialty applications.
In the automotive industry, Evonik Aerosil 84 is used as a thickening and thixotropic agent in automotive coatings and paints. Its hydrophobic nature allows for excellent dispersion in solvent-based systems, improving the rheological properties and flow behavior of the coating. Additionally, Aerosil 84 can enhance the scratch resistance and durability of the coating, providing long-lasting protection for automotive surfaces.
In the cosmetics industry, Evonik Aerosil 84 is utilized as a texturizing agent in skincare and makeup formulations. Its hydrophobic surface properties help to improve the spreadability and skin feel of cosmetic products, creating a luxurious and smooth texture. Additionally, Aerosil 84 can act as a mattifying agent, reducing shine and oiliness on the skin for a flawless finish.
In the pharmaceutical industry, Evonik Aerosil 84 is used as a flow aid and anti-caking agent in solid dosage forms such as tablets and powders. Its hydrophobic surface properties help to improve the flowability and compressibility of the powder, ensuring uniform distribution and consistency in the final product. Additionally, Aerosil 84 can prevent caking and agglomeration of the powder, enhancing the stability and shelf life of the pharmaceutical formulation.
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