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 Evonik Aerosil E 812 Hydrophobic Fumed Silica for Car Marine Powder Wood Industrial Coatings

Evonik Aerosil E 812 Hydrophobic Fumed Silica

Performance Additive for Industrial Coatings

Evonik Aerosil E 812 is a hydrophobic fumed silica made for usage in industrial coverings. It works well in systems for vehicles, marine atmospheres, wood surfaces, and general commercial applications. This additive offers solid anti-settling and thickening results without hurting clearness or gloss.

The product is improved high-purity fumed silica treated with dimethyldichlorosilane. This therapy makes it push back water and mix quickly right into solvent-based systems. It aids control circulation and quit pigments from sinking during storage space. That indicates much less mixing prior to usage and more regular results whenever.

Aerosil E 812 likewise enhances droop resistance on vertical surfaces. Coatings remain where you put them, even when applied thick. This is very important for vehicle refinishes, boat paints, and timber coverings that need smooth, drip-free surfaces. The silica develops a light network inside the fluid. This network waits in place however breaks under shear– so spraying or cleaning stays very easy.

You can use it in alkyds, epoxies, polyurethanes, and polymers. It works best when added during the grinding or let-down stage. Common use degrees range from 0.5% to 3.0% by weight, relying on the system and desired impact. Always examination small sets initially to discover the correct amount for your formula.

Storage is straightforward. Maintain the container sealed in a completely dry place at room temperature level. Avoid wetness– it can compromise performance in time. Take care of with common industrial hygiene methods. Usage gloves and eye protection when collaborating with powder ingredients.

This silica fulfills rigorous top quality criteria. Every set is looked for surface, hydrophobicity, and particle dimension. That makes sure reliable efficiency no matter where or just how you utilize it. For formulators who need a dependable rheology modifier, Aerosil E 812 provides constant outcomes across several coating types.

Applications of Evonik Aerosil E 812 Hydrophobic Fumed Silica for Car Marine Powder Wood Industrial Coatings

Applications of Evonik Aerosil ® E 812 Hydrophobic Fumed Silica in Industrial Coatings

Efficiency You Can Count On Across Industries

Evonik Aerosil ® E 812 is a hydrophobic fumed silica created tough layer jobs. It functions well in vehicle, marine, powder, and wood coatings. This additive gives strong anti-settling power. Pigments and fillers remain evenly blended. That indicates fewer troubles during storage and usage.

Cars and truck finishings need to look excellent and last lengthy. Aerosil ® E 812 aids control circulation and leveling. It stops drooping on vertical surfaces. The surface stays smooth without runs or drips. It also increases scrape resistance so the paint stands up much better in time.

In aquatic finishings, defense matters most. Salt, water, and UV rays strike surface areas fast. Including Aerosil ® E 812 improves film toughness. It decreases water uptake. The layer sticks far better and withstands blistering. Watercrafts and offshore frameworks stay secured much longer.

For powder finishes, free-flow is vital. Aerosil ® E 812 maintains powder bits from clumping. That results in also application and consistent movie thickness. It likewise helps with electrostatic spray efficiency. Much less waste. Much better protection.

Timber finishings need to balance elegance and resilience. Aerosil ® E 812 prevents pigment settling in clear and pigmented systems. It sustains matting without injuring clearness. The outcome is an uniform sheen and solid surface area defense versus wear and moisture.

This silica operates at low loadings. You get big advantages without transforming your formula a lot. It mixes quickly into solvent-based and some water-based systems. Processing stays basic. Efficiency increases.

Aerosil ® E 812 is built for real-world needs. It provides formulators a trustworthy method to address common finish concerns. From cars and trucks to ships, floorings to furnishings, it provides regular outcomes set after batch.

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 Evonik Aerosil E 812 Hydrophobic Fumed Silica for Car Marine Powder Wood Industrial Coatings

Frequently Asked Questions: Evonik Aerosil® E 812 Hydrophobic Fumed Silica

What is Aerosil® E 812 used for in coatings?

Aerosil® E 812 is a hydrophobic fumed silica. It works as a thickening and anti-settling agent in industrial coatings. It helps prevent pigments and fillers from sinking to the bottom of the can. This keeps your coating stable during storage and easy to stir before use.

Why choose a hydrophobic grade like E 812?

E 812 repels water. That makes it ideal for coatings exposed to moisture—like marine, automotive, or outdoor wood finishes. It stays effective even in humid conditions. The hydrophobic surface also improves flow control and prevents clumping in wet environments.

How does it affect application and finish?

This additive gives better sag resistance on vertical surfaces. Paint won’t drip or run as easily. It also supports a smooth, uniform film without harming gloss or clarity. You get consistent results whether you spray, brush, or roll the coating.

Is it compatible with common resin systems?

Yes. Aerosil® E 812 works well in solvent-based systems like epoxies, polyurethanes, and alkyds. It disperses easily with standard mixing equipment. Just follow recommended addition rates to avoid over-thickening.

How much should I add to my formulation?

Typical use levels range from 0.5% to 3% by weight. Start low—around 1%—and adjust based on your needs. Too much can make the coating too stiff. Always test small batches first to find the right balance for stability, viscosity, and application feel.