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.

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Specification of Fumed Silica

Fumed silica is a special sort of silicon dioxide. It is made by burning silicon tetrachloride in a hydrogen-oxygen fire. This procedure creates really great fragments. These bits are very little and have a substantial area for their size. This one-of-a-kind structure gives fumed silica its useful buildings.

The surface area is an essential spec. It is normally measured in square meters per gram. Typical qualities vary from about 50 m TWO/ g as much as 400 m TWO/ g. Higher area usually means more powerful impacts. Fragment size is one more essential aspect. Primary particles are tiny, only about 5 to 50 nanometers. These particles stick in chains. They develop bigger, fluffy accumulations. The typical aggregate dimension is often around 100 to 300 nanometers.

Purity is vital for numerous usages. High-purity fumed silica has over 99.8% SiO TWO. This makes it suitable for sensitive applications like electronics or food call. Surface chemistry matters too. Most fumed silica is hydrophilic. This indicates it attracts water. Hydrophilic grades function well in water-based systems. Hydrophobic grades are likewise available. These are dealt with to repel water. They do better in plastics or silicone rubbers.

Fumed silica is renowned as an enhancing filler. It makes rubber much stronger and extra long lasting. It likewise functions as a powerful thickener. It regulates the circulation of fluids. Including a percentage prevents working out in paints or finishes. It quits powders from caking. It manages viscosity in adhesives and sealants. Its huge area aids it soak up fluids efficiently. This makes it useful in battery pastes or cosmetics. The particular area, aggregate dimension, and surface area treatment figure out exactly how it performs in each application. Selecting the ideal quality depends upon the desired result.

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Applications of Fumed Silica

Fumed silica does vital operate in numerous everyday products. It serves as a thickener. You see it in toothpaste and cosmetics. It makes gels secure and quits them from leaking. Paint demands consistent shade. Fumed silica quits solids from sinking to the bottom. This maintains the shade even. It additionally assists control just how paint flows onto a surface.

Plastics and rubber obtain more powerful with fumed silica. Adding it makes these materials tougher. They stand up to use far better. This is key for things like vehicle tires and seals. Silicone sealers make use of fumed silica too. It makes them thick adequate to stay in location without drooping. The sealant remains where you apply it.

Printing inks need smooth flow. Fumed silica quits them from obstructing the printer nozzles. It maintains the ink fragments relocating openly. Powders can be challenging to take care of. Fumed silica stops them from clumping. It makes powders circulation smoothly. This is essential for points like powdered foods or pharmaceuticals.

Food requires risk-free ingredients. Food-grade fumed silica prevents clumping in powdered products. Think about coffee creamer or spices. It keeps them free-flowing. Adhesives need the right dampness. Fumed silica thickens them. This provides much better control during application. The adhesive stays put till it establishes.

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 Fumed Silica

What is fumed silica?
Fumed silica is a very fine white powder. People make it by burning silicon tetrachloride in a hydrogen-oxygen flame. This process creates tiny particles. These particles stick together in chains. The result is a powder with extremely small particles. It has a huge surface area.

Why use fumed silica?
Fumed silica does important jobs. It thickens liquids. It stops things from settling. It makes materials stronger. It acts like a thickener in paints or adhesives. It keeps powders flowing freely. It reinforces rubber and plastics. Its small size and surface area cause these effects.

How does fumed silica thicken?
The tiny silica particles link together. They form a network inside liquids. This network traps the liquid molecules. It makes the liquid harder to pour. The thickening happens without heat. Just mixing it in creates the effect. The strength of the network depends on how much silica you add.

Is fumed silica safe?
Handle fumed silica carefully. Breathing the dust is bad. Use proper ventilation. Wear a dust mask. Wear gloves. Avoid skin contact. Avoid eye contact. Once mixed into a product, the risk drops. The powder itself requires safety steps. Always check the safety data sheet for specific rules.

What is the difference between fumed and precipitated silica?
Both are silica types. They are made differently. Fumed silica uses a flame process. Precipitated silica comes from a chemical reaction in liquid. Fumed silica usually has smaller particles. It often has a higher purity. It often gives stronger thickening. Precipitated silica is often cheaper. The choice depends on the application needs.

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