Description:
Fumed silica, also known as pyrogenic silica, is a finely divided form of silicon dioxide produced by the combustion of silicon tetrachloride in a flame of hydrogen and oxygen.
It is a white, fluffy powder with high surface area and unique properties.
Properties:
Surface Area: Fumed silica has a very high surface area, typically in the range of 50-400 square meters per gram, which gives it excellent adsorption capacity.
Particle Size: The particle size of fumed silica is extremely small, often in the nanometer range, which imparts unique rheological and reinforcing properties to materials.
Chemical Inertness: Fumed silica is chemically inert, non-toxic, and generally considered safe for use in various applications.
Uses:
Thickening and Rheology Control:
Fumed silica is commonly used as a thickening agent and rheology modifier in a variety of products, including adhesives, sealants, coatings, and paints. It helps control viscosity and improve the stability of formulations.
Reinforcement in Polymers:
Fumed silica is added to polymers, such as silicone rubber and elastomers, to enhance mechanical properties, such as tensile strength, tear resistance, and abrasion resistance. It acts as a reinforcing filler.
Anti-Caking Agent:
In food and pharmaceutical industries, fumed silica is used as an anti-caking agent to prevent clumping and improve the flow properties of powdered products, such as spices, powdered drinks, and pharmaceutical powders.
Thermal Insulation:
Fumed silica is used in thermal insulation materials due to its high surface area and low thermal conductivity. It helps improve the thermal performance of insulating materials.
Cosmetics and Personal Care:
Fumed silica is used in cosmetics and personal care products, such as creams, lotions, and toothpaste, as a thickening agent, anti-settling agent, and texture enhancer.
Coatings and Inks:
Fumed silica is added to coatings, inks, and paints to improve flow properties, increase viscosity, and enhance the performance of the final product.
Pharmaceuticals:
In pharmaceutical formulations, fumed silica is used as a glidant, lubricant, and flow aid in tablet manufacturing to improve powder flow properties and tablet compression.
Precautions:
While fumed silica is generally regarded as safe for use, proper handling procedures should be followed to minimize inhalation of fine particles, which can cause respiratory irritation.
Personal protective equipment, such as masks and gloves, should be used when handling fumed silica powder to prevent skin and respiratory exposure.
In summary, fumed silica is a versatile material with a wide range of applications in industries such as adhesives, coatings, polymers, food, pharmaceuticals, cosmetics, and thermal insulation.
Its unique properties make it valuable for thickening, reinforcing, anti-caking, and improving the performance of various products.
Product Forms: Injectable Solution, Oral Capsules/Tablets
Payment method: T/T in advance, Paypal, Western Union, L/C, etc.
Shipping ways: Courier, Air, Sea, Road
Storage Condition: Dry, dark, and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).
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