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 Silica Fume 200,Hydrophobic Fumed Silica Powder

Specification of Silica Fume 200: Hydrophobic Fumed Silica Powder

Item Summary

Silica Fume 200 is a high-purity hydrophobic fumed silica powder It is made through flame hydrolysis of silicon tetrachloride in a hydrogen-oxygen fire. The surface area of each bit is treated with dimethyldichlorosilane. This therapy gives the powder strong water-repelling homes. Consequently, it mixes well right into non-polar systems and remains secure in moist conditions.

Trick Qualities

Appearance: Fine, free-flowing white powder.
Wager Area: Roughly 200 m ²/ g.
Hydrophobicity: Treated for outstanding dampness resistance.
Bulk Thickness: Around 50– 80 g/L.
Loss on Drying (105 ° C, 2h): ≤ 1.5%.
pH Worth (4% diffusion in water): 3.6– 4.6.

This quality shows reduced dampness absorption. It likewise supplies good thickening and anti-settling performance in organic fluids, resins, and coatings. The powder distributes easily with standard mixing equipment. No special delivery is needed beyond common industrial security practices.

Common Applications

Silica Fume 200 works well in numerous commercial formulas. It is typically made use of in:.
– Epoxy and polyurethane adhesives.
– Unsaturated polyester resins.
– Paints and commercial coatings.
– Sealers and caulks.
– Powder coverings and inks.

In these systems, it stops pigment settling, controls circulation, and improves storage security. Its hydrophobic nature makes certain regular performance even when exposed to moisture during production or use.

Handling and Storage

Store the item in a dry, cool place. Keep containers snugly closed to prevent contact with dampness. Use conventional dust control actions throughout handling. Use appropriate individual safety equipment, consisting of handwear covers and eye protection. Stay clear of producing airborne dirt.

Applications of Silica Fume 200,Hydrophobic Fumed Silica Powder

Applications of Silica Fume 200: Hydrophobic Fumed Silica Powder

Improved Efficiency in Building Products

Silica Fume 200 is widely made use of in high-strength concrete and cement-based products. It fills up tiny gaps between concrete fragments, making the final mix denser and stronger. This results in better longevity and resistance versus water and chemicals. Building contractors use it in bridges, tunnels, and marine structures where lengthy life and reduced upkeep are essential.

Enlarging and Anti-Settling Representative in Coatings

In paints and commercial layers, Silica Fume 200 works as a thickener. It stops pigments and fillers from sinking to the base throughout storage space. This maintains the product constant and very easy to use. The hydrophobic nature of the powder also helps repel dampness, which boosts the layer’s efficiency in wet settings.

Rheology Control in Adhesives and Sealants

Suppliers add Silica Fume 200 to adhesives and sealers to manage circulation and prevent trickling. The powder provides these items the right texture– thick enough to remain in place however smooth sufficient to spread out easily. Its water-repelling function likewise boosts resistance to moisture and weathering.

Stabilizer in Specialty Chemicals

This fumed silica works well in oils, inks, and other specialty formulations. It prevents splitting up of components and keeps uniform uniformity with time. Due to the fact that it drives away water, it additionally protects sensitive components from wetness damage during storage or use.

Secret Advantages

Silica Fume 200 deals solid thickening power with low use degrees. It blends conveniently into numerous systems without clumping. Its hydrophobic surface area guarantees stability in damp problems. These traits make it a trusted option across building, coverings, adhesives, and chemical production.

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 Silica Fume 200,Hydrophobic Fumed Silica Powder

Frequently Asked Questions About Silica Fume 200 – Hydrophobic Fumed Silica Powder

What is Silica Fume 200?

Silica Fume 200 is a hydrophobic fumed silica powder. It is made from high-purity silicon dioxide. The surface of the particles is treated to repel water. This makes it useful in many industrial applications where moisture resistance matters.

How does it improve product performance?

This powder thickens liquids and prevents them from separating. It also stops powders from clumping together. Because it resists water, it helps keep products stable in humid conditions. You will find it in coatings, adhesives, sealants, and some cosmetics.

Is it safe to handle?

Yes, but you must follow basic safety steps. Wear gloves and a mask when working with fine powders. Avoid breathing in the dust. Store it in a dry place with the container closed tight. Always check the safety data sheet before use.

How much should I add to my mixture?

The right amount depends on what you are making. Most formulas use between 1% and 5% by weight. Start with a small test batch. Add more if you need better thickening or anti-settling results. Mix slowly to avoid air bubbles.

Can it be used with other additives?

Yes. Silica Fume 200 works well with many common ingredients. It does not react badly with most resins, solvents, or pigments. Still, always test compatibility first. Mix a small sample and check for changes in texture, color, or stability before full-scale use.