Overview of Fumed Silica

Fumed silica, also known as pyrogenic silica, is an ultra-fine, high-purity amorphous silicon dioxide (SiO2) produced via the combustion of silicon tetrachloride in an oxygen-hydrogen flame. It appears as a fluffy white powder and is valued for its ability to thicken, stabilize, and reinforce materials.

Features of Fumed Silica

• High Surface Area: Typically ranges from 50 to 380 m²/g, providing excellent thickening and reinforcing properties.
• Hydrophilic or Hydrophobic Variants: Available in both forms depending on surface treatment, allowing for tailored applications.
• Excellent Thixotropy: Increases viscosity and improves flow properties of liquids and pastes.
• Chemical Inertness: Resistant to most chemicals, making it suitable for a wide range of industrial uses.

•  Enhances free-flowing properties and stability.

Specification of Popular Fumed Silicon Dioxide Colloidal Nano Silica Hydrophobic Hydrophilic SiO2 Fumed Silica

Requirements of Popular Fumed Silicon Dioxide

Item Summary

Fumed silicon dioxide is a high-purity nano silica made with flame hydrolysis. It looks like a fine, free-flowing white powder This material is commonly used as a thickening agent, anti-caking additive, and strengthening filler throughout lots of sectors.

Secret Kinds: Hydrophilic and Hydrophobic

Two main types exist: hydrophilic and hydrophobic.
The hydrophilic type has a clean silica surface area. It blends well with water and polar fluids. This form works best in applications requiring solid thickening or suspension.
The hydrophobic variation is treated with silanes. This makes it drive away water and mix easily with oils and non-polar systems. It provides much better circulation control in moisture-sensitive items.

Physical and Chemical Properties

– Look : White, cosy powder.
– Bit size : 5– 50 nanometers (key fragments).
– Surface area : 50– 400 m TWO/ g (BET approach).
– Purity : Over 99.8% SiO ₂.
– Mass thickness : 30– 80 g/L.
– Loss on drying out : Below 1.5% at 105 ° C.

Both kinds are unsmelling and chemically secure under normal problems. They do not respond with many acids, bases, or solvents.

Typical Applications

This fumed silica is used in:.
– Paints and layers (to stop pigment settling).
– Adhesives and sealers (for rheology control).
– Cosmetics (as an appearance enhancer in powders and lotions).
– Pharmaceuticals (as a circulation aid in tablet computers).
– Food (approved qualities act as anti-caking representatives).
– Rubber and plastics (to improve stamina and toughness).

Makers choose hydrophilic or hydrophobic qualities based on the end product’s environment and performance requirements. Each set fulfills stringent high quality requirements for uniformity and dependability.

Applications of Popular Fumed Silicon Dioxide Colloidal Nano Silica Hydrophobic Hydrophilic SiO2 Fumed Silica

Applications of Fumed Silica: Hydrophilic and Hydrophobic SiO ₂

Thickening and Anti-Settling Representative

Fumed silica is extensively made use of to enlarge liquids and quit strong particles from sinking. In paints, finishes, and adhesives, it keeps pigments and fillers evenly blended. This aids products remain steady throughout storage and use. Both hydrophilic and hydrophobic types work well right here. The option depends on the base product– water-based systems often use hydrophilic silica, while solvent-based ones like hydrophobic grades.

Rheology Control in Industrial Fluids

Several commercial fluids require unique flow habits. Fumed silica provides the best structure– thick enough to hold form however simple to spread out or pump. Sealers, greases, and inks all take advantage of this control. Hydrophobic fumed silica functions ideal in oils and natural solvents. It resists wetness and preserves performance in damp problems.

Reinforcement in Rubber and Plastics

Adding fumed silica to rubber boosts toughness, tear resistance, and toughness. It is common in high-performance tires and industrial pipes. In plastics, it increases mechanical properties without damaging clearness. Hydrophilic silica bonds well with polar polymers. Hydrophobic versions fit non-polar products like silicone rubber.

Free-Flow Representative in Powders

Dry powders such as spices, pharmaceuticals, and printer toners tend to clump. A percentage of fumed silica layers bits and quits them from sticking. This keeps powders flowing smoothly during product packaging and use. Hydrophobic silica is favored when dampness resistance is needed.

Matting Representative in Coatings

For a soft, non-reflective surface on surfaces, fumed silica produces great surface area roughness. This scatters light and reduces gloss. It is used in wood coatings, automotive layers, and printing inks. Both hydrophilic and hydrophobic types can be made use of, depending upon the coating system.

Fumed silica offers reliable efficiency across several sectors. Its nano-scale bits and high surface area make it efficient even at reduced doses. Customers select in between hydrophilic and hydrophobic types based on compatibility, moisture exposure, and preferred function.

Company Introduction

Welcome to HiphopGalaxy, a trusted global supplier of high-quality silicon dioxide (SiO2) powder, renowned for its exceptional purity and performance. Established with a vision to deliver cutting-edge materials that meet the diverse needs of modern industries, we have positioned ourselves as a leading player in the international market.

Our SiO2 powders find applications across multiple sectors, including adhesives, coatings, pharmaceuticals, cosmetics, polymers, and electronics. Each application benefits from the unique properties of our products—high surface area, excellent thixotropy, chemical inertness, and superior reinforcement capabilities. Whether you need hydrophilic or hydrophobic variants, we offer tailored solutions to meet your specific requirements.

If you have any questions, please feel free to contact us(nanotrun@yahoo.com).

Payment Methods

T/T, Western Union, Paypal, Credit Card etc.

Shipment Methods

By air, by sea, by express, as customers request.

5 FAQs of Popular Fumed Silicon Dioxide Colloidal Nano Silica Hydrophobic Hydrophilic SiO2 Fumed Silica

Popular Questions About Fumed Silica

What is fumed silica?

Fumed silica is a very fine powder made from silicon dioxide (SiO₂). It forms through a high-temperature process that creates tiny, chain-like particles. These particles give the material special thickening and anti-settling properties. People use it in paints, adhesives, cosmetics, and many industrial products.

What’s the difference between hydrophobic and hydrophilic fumed silica?

Hydrophilic fumed silica attracts water. It mixes well in water-based systems. Hydrophobic fumed silica repels water. Manufacturers treat it with special chemicals so it works better in oils, solvents, or moisture-sensitive formulas. Choose based on your product’s base—water or oil.

Why use nano-sized fumed silica?

Nano-sized particles have a huge surface area compared to their weight. This boosts performance. They thicken liquids more efficiently, improve flow control, and help keep solid particles suspended. Even small amounts make a big difference in texture and stability.

Is fumed silica safe to handle?

Fumed silica is generally safe when used correctly. However, its fine dust can irritate eyes, skin, or lungs. Always wear gloves, goggles, and a mask when handling the dry powder. Follow safety instructions on the product label and work in a well-ventilated area.

How do I mix fumed silica into my product?

Add fumed silica slowly while stirring. High-shear mixing helps break up clumps and ensures even distribution. For best results, sprinkle the powder into the liquid—not the other way around. Let the mixture rest briefly after mixing to let air bubbles escape. This gives you a smooth, stable final product.