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.

(Filler fumed silica precipitated hydrophobic fumed silica)

Specification of Filler fumed silica precipitated hydrophobic fumed silica

Filler fumed silica and precipitated hydrophobic fumed silica are specialty materials used to enhance performance in various industrial applications. Both types improve mechanical properties, stability, and processing in products. They differ in production methods and specific characteristics. Fumed silica is made by burning silicon tetrachloride in a hydrogen-oxygen flame. This creates tiny, high-purity particles with large surface areas. Precipitated silica is produced through a liquid-phase reaction. Sodium silicate reacts with acid to form a gel, which is then dried and processed.

Hydrophobic fumed silica is treated to repel water. This makes it ideal for applications requiring moisture resistance. The surface modification uses silane agents. These agents create a non-polar layer on the particles. This prevents clumping and improves dispersion in non-aqueous systems. Both fumed and precipitated silica have small particle sizes. This gives them high surface area and strong thickening effects. They are effective in controlling viscosity, preventing settling, and reinforcing materials.

Filler fumed silica works well in adhesives, coatings, and silicone rubber. It adds strength and durability. Precipitated silica is common in tires, plastics, and food products. It improves abrasion resistance and acts as an anti-caking agent. Hydrophobic types are preferred in systems exposed to water or humidity. Examples include paints, coatings, and electronic encapsulants. They maintain performance in wet conditions.

Handling these materials requires care. Fine particles can become airborne. Proper ventilation and protective equipment are necessary. Storage should be in dry, sealed containers. Moisture can affect untreated silica. Hydrophobic versions are more stable in damp environments.

These silicas are chosen based on cost, performance needs, and processing conditions. Fumed silica offers higher purity and performance. It is more expensive. Precipitated silica provides a cost-effective option for less demanding uses. Both types are versatile. They meet requirements in industries like automotive, construction, and electronics. Compatibility with other materials is key. Testing is recommended to ensure optimal results.

(Filler fumed silica precipitated hydrophobic fumed silica)

Applications of Filler fumed silica precipitated hydrophobic fumed silica

Filler fumed silica and precipitated hydrophobic fumed silica are versatile materials used across many industries. Their unique properties make them valuable for improving product performance. Filler fumed silica works well as a thickening agent. It is often added to adhesives and sealants. This helps control viscosity and prevents sagging during application. The material also enhances mechanical strength. Coatings and paints benefit from its ability to improve scratch resistance. This extends the lifespan of surfaces exposed to harsh conditions.

Precipitated hydrophobic fumed silica resists moisture absorption. This makes it ideal for applications where water resistance is critical. In silicone rubber products, it acts as a reinforcing filler. The result is better elasticity and durability. The automotive industry uses it in gaskets and seals. These parts maintain performance under extreme temperatures.

The plastics industry relies on both types of silica. They improve processing efficiency and reduce sticking during molding. Fillers with hydrophobic properties prevent clumping in powdered products. Pharmaceuticals use them to ensure consistent flow in tablet production. Food-grade variants stabilize powders like spices or supplements. They prevent caking and extend shelf life.

Construction materials like concrete and mortars gain strength from fumed silica. It fills tiny gaps and reduces cracking. Hydrophobic versions protect structures from moisture damage. This is useful in waterproofing membranes or insulation.

Electronics manufacturing applies these silicas in encapsulants. They protect sensitive components from humidity and dust. The materials also enhance thermal stability in electronic adhesives.

Personal care products like creams and lotions use fumed silica. It adjusts texture and prevents separation. Sunscreens rely on it for even distribution of active ingredients.

The versatility of these materials ensures steady demand. Industries continue finding new ways to integrate them into advanced solutions.

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 Filler fumed silica precipitated hydrophobic fumed silica

Filler fumed silica and precipitated hydrophobic fumed silica are materials used in industries like coatings, adhesives, and plastics. Here are five common questions about them. What is the difference between filler fumed silica and precipitated silica? Fumed silica comes from burning silicon tetrachloride in hydrogen-oxygen flames. This creates tiny particles with high surface area. Precipitated silica is made by reacting sodium silicate with acid. It forms larger particles with lower surface area. Fumed silica gives better thickening and reinforcement. Precipitated silica is cheaper but less effective in some uses. Why use hydrophobic fumed silica? Hydrophobic fumed silica is treated to repel water. This makes it work better in waterproof coatings or rubber seals. It mixes easier with non-polar materials like oils. The treatment stops clumping in humid conditions. Regular fumed silica absorbs moisture. This can cause clumps or change product performance. What industries use these silicas? They are common in paints to prevent dripping. They thicken adhesives and sealants. In plastics, they add strength and reduce shrinkage. Hydrophobic types go into silicone rubber for outdoor gear. Cosmetics use them to adjust texture. Food-grade versions act as anti-caking agents. Are these silicas safe to handle? Wear gloves and masks when handling powders. Fine particles can irritate lungs or eyes. Avoid breathing dust. Store in dry areas to keep quality. Follow safety guidelines from suppliers. Hydrophobic types may have surface treatments. Check if these need extra precautions. How do I choose between fumed and precipitated silica? Pick fumed silica for high-performance needs like strength or transparency. Use precipitated silica if cost matters more. Hydrophobic fumed silica suits waterproof applications. Test both in your product to compare results. Suppliers often give samples for trials.

(Filler fumed silica precipitated hydrophobic fumed silica)