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.

(CAS 7631-86-9 paint and rubber hydrophilic fumed silica powder silicon dioxide)

Specification of CAS 7631-86-9 paint and rubber hydrophilic fumed silica powder silicon dioxide

CAS 7631-86-9 determines hydrophilic fumed silica powder. This is pure silicon dioxide. It’s made by melting silicon tetrachloride in a hydrogen-oxygen fire. The procedure produces microscopic, amorphous bits. These fragments develop detailed three-dimensional chains and aggregates. The powder looks white and fluffy. It really feels extremely great, like flour.

This silica powder has a massive surface. It’s highly permeable. The surface includes lots of silanol teams (Si-OH). These groups make the powder bring in water. It readily soaks up dampness from the air. This is the “hydrophilic” building. It imitates a sponge for water.

In paints and finishes, this silica is a vital additive. It enlarges the liquid. It prevents the paint from dripping or drooping on upright surface areas. It helps manage the paint’s circulation. It quits pigments from clearing up to the base of the can. The paint stays combined much longer. It provides the surface a smoother feel.

For rubber items, this silica is an effective reinforcing filler. It makes rubber much stronger. It boosts tear resistance. Rubber lasts much longer under stress. The silica also aids during rubber processing. It makes the uncured rubber blend much less sticky. Workers manage it much easier. The silica assists the rubber cure effectively. It boosts the rubber’s resistance to heat aging. Tires, seals, and pipes frequently use it. It improves their efficiency and sturdiness.

The powder is chemically inert. It does not react with the majority of compounds. It holds up against very high temperatures. It’s non-toxic. These residential or commercial properties make it risk-free for lots of industrial uses. It’s a versatile material. Its unique framework offers important advantages. Paints and rubber depend on its particular results.

(CAS 7631-86-9 paint and rubber hydrophilic fumed silica powder silicon dioxide)

Applications of CAS 7631-86-9 paint and rubber hydrophilic fumed silica powder silicon dioxide

CAS 7631-86-9 is hydrophilic fumed silica powder. This fine white powder is silicon dioxide. It is really helpful in paints and rubber products. Its small particle dimension and high area create vital results.

Paint manufacturers add this silica powder. It acts as a thickener. It stops paint from drooping on upright surface areas. It controls how paint streams. This makes application smoother. It helps the paint level out evenly. It minimizes brush marks. The powder also deals with settling. It maintains pigments blended in the paint can. Paint lasts longer. Repaint does far better on walls and objects.

Rubber suppliers need this silica too. It strengthens rubber products. It makes rubber stronger. It raises tear resistance. Rubber products last longer. It assists control the rubber’s density during handling. The powder soaks up fluids well. This is key in silicone rubber. It stops undesirable stickiness. Rubber parts are easier to take care of. The rubber gets better mechanical residential or commercial properties.

Various other markets use hydrophilic fumed silica. Adhesives and sealants obtain enhanced toughness. Printing inks stream far better. They withstand clearing up. Cosmetics feel smoother. Powders stay clear of clumping. This silica powder manages wetness properly. It spreads well in numerous fluids. It gives reliable 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 CAS 7631-86-9 paint and rubber hydrophilic fumed silica powder silicon dioxide

What is CAS 7631-86-9 hydrophilic fumed silica?
This powder is pure silicon dioxide. It’s made by burning silicon tetrachloride in a hydrogen-oxygen flame. The process creates tiny particles. These particles form chain-like structures. This powder loves water. We call it hydrophilic.

Why use this silica powder in paints and coatings?
It controls thickness. It stops pigments from settling. It makes the paint apply smoothly. It prevents drips on vertical surfaces. The powder works well in water-based paints. It helps the paint stay stable.

How does it help rubber products?
It makes rubber stronger. It improves tear resistance. It makes the rubber last longer. The powder helps rubber flow better during processing. It makes the final product smoother.

Is this silica powder safe to handle?
Handle it carefully. Wear a dust mask. Wear protective gloves and goggles. Breathing fine dust is bad. It can irritate your lungs. Follow OSHA rules for dust limits. Keep it away from your eyes and skin. Store it in a dry place. Keep the container sealed.

What makes it different from other silicas?
This powder is untreated. It has lots of hydroxyl groups on its surface. These groups attract water. This makes it perfect for water-based systems. Other silicas get surface treatments. Those treatments make them repel water. Use hydrophilic silica when you need compatibility with water.

(CAS 7631-86-9 paint and rubber hydrophilic fumed silica powder silicon dioxide)