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

Specification of Popular Fumed Silicon Dioxide

Product Review

Fumed silicon dioxide, also called fumed silica or colloidal nano silica, is a high-purity, ultrafine powder made with flame hydrolysis. It appears as a fluffy, white powder with a big surface and solid thickening capability. This product works well in lots of sectors since it enhances texture, stability, and efficiency.

Trick Residences

Fumed silica can be found in two main types: hydrophilic and hydrophobic .
– Hydrophilic fumed silica blends conveniently with water and polar fluids. It forms stable gels and avoids clearing up in paints, adhesives, and finishings.
– Hydrophobic fumed silica fends off water. It is treated with silanes to stand up to dampness, making it optimal for sealers, cosmetics, and electronics where dry skin matters.

Both types have very small particle dimensions– normally in between 5 to 50 nanometers– and high certain surface areas varying from 50 to 400 m TWO/ g. They are free-flowing, non-toxic, and chemically inert under regular problems.

Typical Applications

This product is commonly used across various fields:
– In paints and finishes , it stops pigments from sinking and helps control circulation.
– In adhesives and sealers , it adds thixotropy so the item stays after application.
– In cosmetics , it provides powders a smooth feel and absorbs oil without obstructing pores.
– In drugs , it serves as a flow aid in tablet computer production.
– In rubber and plastics , it enhances stamina and wear resistance.

Technical Information

Typical specifications consist of:
– SiO ₂ material : ≥ 99.8%.
– Loss on drying out : ≤ 1.5% at 105 ° C.
– pH worth : 3.6– 4.6 (in 4% diffusion).
– Bulk density : 30– 80 g/L.
– Ignition loss : Varies by quality; hydrophobic kinds reveal higher worths due to surface treatment.

Always store fumed silica in a completely dry, trendy place with the container firmly near to prevent dampness absorption.

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

Applications of Fumed Silica: Hydrophilic and Hydrophobic SiO TWO

Thickening and Anti-Settling Representative

Fumed silica functions well as a thickener in paints, finishes, and adhesives. It quits pigments and fillers from sinking to the base throughout storage. This keeps the product constant and prepared to make use of whenever.

Rheology Control

Suppliers add fumed silica to regulate just how fluids flow. In sealants and oils, it offers just the best structure– thick sufficient to stay in area yet simple to spread out when required. Both hydrophilic and hydrophobic types are used, relying on the base product.

Support in Rubber and Plastics

In rubber products like tires or footwear soles, fumed silica improves stamina and put on resistance. It additionally helps plastics keep their shape under anxiety. The hydrophobic variation is often selected right here since it mixes better with natural polymers.

Free-Flow Agent for Powders

Dry powders such as seasonings, cleaning agents, or drugs have a tendency to glob. A percentage of hydrophobic fumed silica coats each bit, maintaining them different. This guarantees smooth putting and also blending.

Matting and Surface Area End Up

Paints and varnishes utilize fumed silica to develop a soft, non-glossy surface. The fine bits scatter light evenly, giving surfaces an uniform matte look without influencing toughness.

Specialty Uses

In cosmetics, hydrophilic fumed silica takes in oil and adds level of smoothness to powders and lotions. In electronic devices, it works as an insulator or filler in encapsulants. Food-grade variations aid avoid caking in powdered foods while satisfying security criteria.

Each kind– hydrophilic or hydrophobic– offers different requirements. Hydrophilic silica bonds well with water-based systems. Hydrophobic silica pushes back wetness and blends easily into oils, materials, and solvents. Choosing the right one makes a huge difference in efficiency.

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-caking 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 applications. Choose one based on your product’s base—water or oil.

Why use nano-sized fumed silica?

Nano-sized particles have a large surface area compared to their weight. This boosts performance. They thicken liquids more efficiently, improve stability, and help prevent settling. Their small size also means they don’t change the look or feel of the final product much.

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 powder. Keep work areas well-ventilated. Follow safety instructions on the product label.

How do I mix fumed silica into my product?

Add fumed silica slowly while stirring your base liquid. Use high-shear mixing if possible—it helps break up clumps and spread particles evenly. For hydrophobic types, pre-mix with a solvent first. For hydrophilic types, add directly to water-based systems. Avoid dumping large amounts at once; this causes lumps.