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.

(Popular Fumed Silicon Dioxide Colloidal Nano Silica Hydrophobic Hydrophilic SiO2 Fumed Silica)

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

Fumed silicon dioxide is a very fine powder. It’s made through a special high-temperature process. This creates tiny particles. These particles are extremely small. They form structures with many branches. This gives the powder a huge surface area. That surface area is key to how it works.

This material comes in two main types. Hydrophilic fumed silica loves water. It mixes easily with water-based systems. Hydrophobic fumed silica repels water. It works better in oils and solvents. Both types are used as thickening agents. They prevent liquids from dripping or settling. They also act as anti-settling agents in paints and coatings. They help keep solids suspended.

Fumed silica reinforces rubber and plastics. It makes them stronger. It improves their durability. In adhesives and sealants, it controls the flow. It stops the material from sagging. It helps the adhesive stay where you put it. The powder is also used in cosmetics. It helps control texture. It prevents caking.

The particles are very small. Typical sizes are in the nanometer range. The surface area is large. It can be 50 to 400 square meters per gram. The powder looks white and fluffy. It feels very light. You add it by mixing it in slowly. Good dispersion is important. It ensures it works properly.

Handle the powder carefully. Avoid breathing in the dust. Use proper ventilation. Store it in a cool, dry place. Keep it sealed tight. Moisture can affect how it performs, especially hydrophilic grades. Follow safety guidelines when using it.

(Popular Fumed Silicon Dioxide Colloidal Nano Silica Hydrophobic Hydrophilic SiO2 Fumed Silica)

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

Fumed silica has many important jobs. It makes products thicker. It helps things flow better. It makes materials stronger. It stops things from settling. This nano silica comes in two main types. Hydrophilic fumed silica likes water. Hydrophobic fumed silica pushes water away. Both types are very useful.

In paints and coatings, fumed silica is key. It controls how thick the paint is. This stops dripping or sagging. It makes the coating last longer. It improves how the paint looks when dry. It also helps pigments spread evenly.

Silicone rubber needs fumed silica too. It makes the rubber much stronger. It improves how the rubber handles heat. It helps the rubber keep its shape. Without it, silicone rubber would be weak.

Adhesives and sealants use fumed silica. It thickens the glue or sealant. This makes it stay where you put it. It controls how fast it sets. It improves how strong the bond is.

Printing inks rely on fumed silica. It changes how the ink flows. This gives a clean, sharp print. It stops the ink from soaking into the paper too much. It helps the ink dry evenly.

Plastics and composites get benefits. Fumed silica makes them tougher. It improves how they handle heat. It makes surfaces harder to scratch.

Food and pharmaceuticals use small amounts. It stops powders from clumping. It makes pills flow better in machines. It keeps vitamins stable.

Cosmetics need it for texture. It thickens creams and lotions. It makes powders feel smooth. It helps sunscreen spread evenly.

The choice between hydrophobic and hydrophilic depends on the material. Hydrophilic works well with water-based products. Hydrophobic is better for things that don’t like water. Both types are vital for making many everyday items work well.

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

What is fumed silica?
Fumed silica is a fine white powder. It is made from silicon dioxide. The process involves burning silicon tetrachloride in a hydrogen-oxygen flame. This creates tiny particles. These particles form aggregates. The aggregates form agglomerates. The result is an ultra-fine powder with high surface area. It is not the same as crystalline silica found in sand. Fumed silica is amorphous.

What is the difference between hydrophobic and hydrophilic fumed silica?
Hydrophilic fumed silica loves water. Its surface has silanol groups (Si-OH). These groups attract water molecules. Hydrophobic fumed silica repels water. It is treated with chemicals like silanes. The treatment covers the silanol groups. This makes the surface water-repellent. The choice depends on the application. Use hydrophilic for water-based systems. Use hydrophobic for non-polar systems.

What are the main uses of fumed silica?
Fumed silica acts as a thickener. It prevents settling in liquids. It improves flow properties in powders. It reinforces rubber and plastics. It controls viscosity in paints and coatings. It prevents caking in food powders. It acts as an anti-sag agent in adhesives. It helps make battery electrodes. It is used in pharmaceuticals. It is very versatile.

Is fumed silica safe to handle?
Handle fumed silica with care. It is a fine dust. Breathing it in is not good. Always use proper ventilation. Wear a dust mask. Wear safety glasses. Gloves are recommended too. Follow the safety data sheet (SDS). The amorphous form is less hazardous than crystalline silica. But precautions are still necessary.

How do I choose the right fumed silica?
Consider your application first. Think about the material system. Is it water-based or oil-based? Hydrophilic works best with water. Hydrophobic works best with oils. Think about the desired effect. Do you need thickening? Do you need reinforcement? Do you need anti-settling? Different grades offer different surface areas. Different particle sizes matter. Consult the supplier’s technical data. They can recommend the best type.

(Popular Fumed Silicon Dioxide Colloidal Nano Silica Hydrophobic Hydrophilic SiO2 Fumed Silica)