What Is Fumed Silica Used For

Fumed Silica, sometimes called pyrogenic silica, is a non-crystalline, colloidal silicon dioxide synthesized by a flame hydrolysis procedure. It comprises a microscopic liquid of amorphous silica-based nanomaterial fused into chainlike 3-dimensional particles, which then mechanically entangle to create agglomerates.
Because of the three-dimensional structure and small diameter of primary particles, fumed silica has an extremely high surface area. Fumed silica is a white, fluffy powder used in many applications across many industries.

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Fumed Silica Applications

Fumed silica is widely used in various applications as a filler and flow control additive, thanks to its thickening, anti-sagging, thixotropy control, anti-settling, transparency, and low-density properties. Typical application areas of fumed silica are HTV and RTV silicone resins, cable gels used in fiber optic cables, adhesives, composite materials and coatings, home care products, plant protection, and more. Its refractive index makes it the most favored choice for transparent applications.

Fumed silica is also used in gelcoat and laminating applications to provide reliable rheological control and ensure optimum shear thinning. This powder has two main functions. The first function is a reinforcement to facilitate the strength of various raw materials, enabling them to be used in a range of applications based on the end user&#;s specific requirements. Secondly, the rheology control function lets users tailor the viscosity of a material to suit their exact specifications.

Fumed silica is used as an anti-sagging, anti-settling, and thickening agent to reinforce composites or films. It also acts as a thickener in milkshakes and a universal thickening and anti-caking agent in powdered food. Because of its light-diffusing characteristics, fused silica is widely used in cosmetic applications. This powder also serves as a light abrasive in various products such as toothpaste.

Additional applications of fumed silica include unsaturated polyester resins, toiletries, food & beverages, sealants, printing inks, coatings, and adhesives. It can also serve as filler in silicone elastomers as well as viscosity adjustments in paints.

Depending on the application and industry, fumed silica products of different particle structures and varying BET surface areas and densities are available. The best part is that these products can be customized to suit specific applications.

Order Fumed Silica from Bisley International

As the leading raw materials supplier in the United States, Bisley International is glad to provide you with high-quality fumed silica products. At Bisley International, we supply Bi-SiL, a high purity (>99.8% silica) anti-caking and free-flowing pure white colloidal powder. It exhibits thickening and thixotropic characteristics when added to cable gels and polar materials like vinyl ester resins and epoxy.

The Bi-SiL fumed silica is available in many different grades with varying surface areas, excellent dispersibility, and PH hydrophobic functionality. Our Bi-SiL hydrophobic fumed silica is widely used in multiple applications, including composite materials, greases, flask resins, adhesives, coatings, cable gels used in fiber optic cables, inks, toners, and sealants.

Contact us today for a quick inquiry and learn more about our Bi-SiL fumed silica. Check out our range of PVC Plastics, Rubbers and Foam Products

Goto Hebei Silicon Research Electronic Materials Co., L to know more.

Applied Material Solutions (AMS) is a Wisconsin-based company that manufactures high-quality hydrophobic treated silica products, including both precipitated and fumed varieties. By leveraging our unique range of manufacturing capabilities, our expert team produces a wide range of silica products for use in a diverse set of industries.

The following blog post provides an overview of hydrophobic treated silica products, outlining the chemical properties, applications, and solutions available from AMS.

Chemical Properties of Hydrophobic Treated Silica

In addition to its hydrophobic&#;i.e., water-repelling&#;properties, treated silica demonstrates several characteristics that make it well-suited for use in a wide range of applications. As an ingredient in other materials and products, it offers the following benefits:

• Foam control. It serves as a key active ingredient in many foam control products, such as antifoaming agents, defoamers, and deaerators.
• Powder free flow encouragement. It facilitates the free flow of powdered substances that have a tendency to &#;cake&#; or clump together. It also enhances their storage stability.
• Processing improvements. The utilization of treated silica allows for optimal processability, hydrophobicity control, thickening, thixotropy, rheology control, and suspension and stability behavior. For example, motionless particles can be restored to their original level of viscosity with a minimum expenditure of energy.
• Adsorbent qualities. It can adsorb compounds in gaseous, liquid, or solid states and act as a carrier that allows for the conversion of liquids and pastes into powders.
• Anti-blocking, anti-sagging, anti-setting, and anti-setoff attributes. An example of an application in which these qualities are critical is in anti-setoff spray powder, which industry professionals use to maintain an air gap between printed sheets of paper to prevent ink bleed-through.
• Mechanical improvements. It can improve tensile strength, elongation at break, and tear resistance and help minimize the effect of temperature on mechanical properties.
• When used in materials, such as polymers, it reinforces both strength and structure.
• Pigment stabilization and dispersion. It can prevent or delay the sedimentation of solids in liquid systems, as well as disperse sediments that have already settled, break down solid particles, and stop such particles from recombining.
• Print definition enhancements. The resolution and print quality of toners can be significantly improved through the use of hydrophobic treated silica.
• Thermal insulation. Amorphous silicon dioxide is a highly non-conductive material, making it an excellent choice for thermal insulation applications.

Common Applications of Hydrophobic Treated Silica

Hydrophobic treated silica finds application in a variety of materials and products. Some of its most common uses include:

• Defoamers and antifoams
• Demulsifiers
• Fire extinguishers
• Silicone rubber
• Silicone sealants
• Greases
• Paints and coatings
• Plastics
• Polyester resins
• Cosmetics
• Inks and toners

Hydrophobic Treated Silica Solutions From AMS

At AMS, we manufacture treated silica products for a myriad of customer applications. Armed with years of silica treatment manufacturing experience and a modern manufacturing facility, our team can produce an array of products across a wide range of particle sizes, hydrophobicity levels, and surface areas to suit our customers&#; needs.

From development to production to testing and regulation, AMS strives to meet the requirements outlined by our customers and to provide the highest level of quality, accuracy, and performance. In doing so, we aim to minimize customer investment&#;both in regard to time and money&#;and maximize customer satisfaction.

For additional information about our treated silica solutions, contact us today.

Want more information on hydrophobic pyrogenic silica? Feel free to contact us.