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.

(Hydrophilic and hydrophobic fumed silica 99% SiO2 content fine white fumed precipitated silica powder for rubber)

Specification of Hydrophilic and hydrophobic fumed silica 99% SiO2 content fine white fumed precipitated silica powder for rubber

This fumed silica powder provides high purity. It consists of 99% silicon dioxide (SiO2). The material is a fine white powder. It is generated utilizing a vapor-phase procedure. This produces extremely tiny particles. The bits have a huge surface. This surface is key for performance.

There are two major kinds offered. Hydrophilic fumed silica soaks up water quickly. It brings in wetness from the air. This kind works well in several typical rubber compounds. Hydrophobic fumed silica fends off water. It is treated with special agents like silanes. This treatment makes it water-resistant. It remains free-flowing in humid conditions.

Both kinds are strong enhancing fillers for rubber. They considerably boost mechanical residential or commercial properties. The rubber obtains much more difficult and stronger. Tear resistance enhances considerably. Abrasion resistance likewise raises. Products last much longer. The powder acts as a thickener too. It controls the circulation of uncured rubber compounds. This avoids drooping during handling. Mixing comes to be less complicated. The powder distributes well. It prevents clumping.

Hydrophilic silica is common for general rubber items. Believe seals, hoses, and mats. Hydrophobic silica is essential for silicone rubber. It stops wetness problems throughout curing. It additionally improves electric insulation residential properties. This matters for cable televisions and insulators. The fine particle dimension ensures a smooth coating. Rubber surfaces look better. Processing aids function more effectively with this silica. It assists launch rubber from mold and mildews cleanly. The high purity decreases undesirable responses. Rubber vulcanization remains consistent. Efficiency is trustworthy.

(Hydrophilic and hydrophobic fumed silica 99% SiO2 content fine white fumed precipitated silica powder for rubber)

Applications of Hydrophilic and hydrophobic fumed silica 99% SiO2 content fine white fumed precipitated silica powder for rubber

Fumed silica powder is vital in rubber production. This product can be found in 2 kinds. Hydrophilic fumed silica bonds highly with rubber particles. Hydrophobic fumed silica pushes back water successfully. Both types have 99% pure silicon dioxide (SiO2). This high pureness delivers dependable performance.

Rubber makers utilize this fine powder to strengthen products. Including fumed silica makes rubber much tougher. It enhances resistance versus tearing and abrasion. Tires get far better grip on wet roads due to hydrophobic silica. This water-repelling kind helps network water away. Tread life frequently enhances as well.

Industrial rubber components need resilience. Fumed silica prevents fractures and divides. Seals and gaskets last much longer under stress. Conveyor belts take care of heavy tons much better. The powder strengthens the rubber framework evenly.

Silicone rubber benefits greatly from fumed silica. It keeps silicone versatile over a large temperature level variety. The product remains clear when utilizing hydrophilic qualities. Silicone seals and medical components require this clearness. Toughness enhances without cloudiness.

Processing rubber is easier with fumed silica. The powder blends efficiently into rubber compounds. It stops sticking during molding and extrusion. Production lines run much faster. Workers find the product straightforward to deal with. Manufacturers get constant batches every time.

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 Hydrophilic and hydrophobic fumed silica 99% SiO2 content fine white fumed precipitated silica powder for rubber

Hydrophilic and Hydrophobic Fumed Silica FAQs

What exactly is this silica powder?
This is a very fine white powder. It’s mostly pure silicon dioxide (99% SiO2). We make it through a special vapor process. The result is tiny particles with huge surface area. This powder acts as a powerful reinforcing filler.

What’s the difference between hydrophilic and hydrophobic types?
The surface chemistry is different. Hydrophilic silica has exposed silanol groups (Si-OH) on its surface. These groups attract water. Hydrophobic silica gets treated with special agents like silanes. This coating blocks water attraction. It makes the powder repel moisture.

Why use this silica in rubber?
It makes rubber stronger and tougher. The tiny particles fill spaces between rubber molecules. This improves tear resistance and abrasion resistance. It controls the flow of uncured rubber compounds too. This helps during processing. Hydrophilic types are common in many rubbers. Hydrophobic types are essential for silicone rubbers needing water resistance.

Is it hard to mix this silica into rubber?
Yes, it can be tricky because it’s so fine and light. The powder tends to clump and trap air. You need good mixing equipment. Add the silica gradually. Use a slow stir speed first. Increase the speed once it’s partly mixed. This prevents dust and ensures even dispersion. Proper mixing is key for good performance.

How should I store this silica powder?
Keep it in a cool, dry place. Make sure the container is tightly sealed. Moisture is the main enemy, especially for hydrophilic grades. Moisture makes the powder lumpy and harder to handle. Hydrophobic grades resist moisture better. They still need dry storage. Don’t expose any type to high humidity.

(Hydrophilic and hydrophobic fumed silica 99% SiO2 content fine white fumed precipitated silica powder for rubber)