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.

(Cheap Hydrophilic and hydrophobic fumed silica dioxide 90%-99% SiO2 content fine white fumed precipitated silica powder)

Specification of Cheap Hydrophilic and hydrophobic fumed silica dioxide 90%-99% SiO2 content fine white fumed precipitated silica powder

Low-cost Hydrophilic and Hydrophobic Fumed Silica Dioxide is a versatile fine white powder with a high SiO2 web content ranging from 90% to 99%, made for commercial and commercial applications calling for enhanced efficiency in rheology, enlarging, or support. Offered in both hydrophilic (water-attracting) and hydrophobic (water-repelling) versions, this silica powder is produced through fire pyrolysis (fumed) or wet chemical procedures (precipitated), making sure flexibility to diverse solutions. The hydrophilic kind features a high area (150– 400 m ²/ g) and unmodified silanol teams, making it suitable for water-based systems, while the hydrophobic version is treated with silane or silicone to lower dampness absorption, enhancing compatibility with organic polymers.

Trick specifications consist of a purity of 90– 99% SiO2, depending on grade, with trace contaminations like Al2O3, Fe2O3, and TiO2 lessened for regular efficiency. The powder has an ordinary fragment size of 5– 50 nm (key particles) and creates accumulations of 1– 100 μm, making sure smooth dispersion. Mass density ranges from 30– 60 g/L (untapped) to 50– 120 g/L (tapped), with a pH of 3.6– 4.3 (hydrophilic) or 6.0– 7.5 (hydrophobic). Loss on drying (105 ° C )is ≤ 1.5%, ensuring reduced dampness material. Hydrophilic silica excels in water-based adhesives, coverings, and drugs, using thickness control and anti-caking properties. Hydrophobic silica boosts rubber, plastics, and silicone items by improving mechanical toughness, dielectric buildings, and weather resistance.

Both types are chemically inert, safe, and thermally stable approximately 1,600 ° C. They act as anti-settling agents in paints, matting agents in layers, and free-flow aids in powders. The hydrophobic version is favored for water resistant finishings, sealers, and compounds requiring moisture resistance. Economical without endangering high quality, this silica powder is packaged in moisture-resistant bags (5– 25 kg) and saved in great, dry problems. Safety precautions consist of utilizing PPE to prevent breathing and eye get in touch with. Ideal for markets like building, automobile, cosmetics, and electronic devices, it stabilizes performance and affordability, making it a useful choice for enhancing item formulas.

(Cheap Hydrophilic and hydrophobic fumed silica dioxide 90%-99% SiO2 content fine white fumed precipitated silica powder)

Applications of Cheap Hydrophilic and hydrophobic fumed silica dioxide 90%-99% SiO2 content fine white fumed precipitated silica powder

Low-cost hydrophilic and hydrophobic fumed silica dioxide (90%-99% SiO2) is a functional fine white powder commonly made use of throughout sectors due to its special physical and chemical residential properties. Hydrophilic fumed silica, with its high area and polar surface area groups, masters water-based applications, while hydrophobic variants, treated with silanes, drive away dampness and enhance compatibility in non-polar systems. Both kinds provide cost-effective services for enhancing efficiency in varied items.

In coatings and paints, hydrophilic fumed silica works as a rheology modifier, avoiding drooping and settling while making certain smooth application. Hydrophobic silica, on the various other hand, improves water resistance and resilience in exterior finishings. Adhesives and sealers take advantage of hydrophobic silica’s capacity to boost thixotropy and prevent dampness absorption, making it excellent for silicone sealants and building and construction adhesives.

The construction industry makes use of hydrophilic silica in cement and concrete to reduce splitting and boost workability. Hydrophobic silica is included in waterproofing membranes and mortars to increase resistance to humidity. In polymers and plastics, both types of silica work as strengthening fillers, enhancing mechanical stamina, thermal security, and processing effectiveness.

Drugs and cosmetics utilize hydrophilic silica as an anti-caking representative in powders or a viscosity enhancer in lotions. Hydrophobic silica is used in lipsticks and sun blocks for its smooth appearance and water-repellent buildings. In individual treatment items, it enhances the spreadability of creams and the long life of make-up.

Automotive applications include usage in tires (enhancing grip and wear resistance) and engine coverings (for thermal management). Hydrophobic silica is additionally critical in electronics for potting substances and shielding products, where dampness resistance is essential.

Farming utilizes hydrophilic silica as a carrier for chemicals and fertilizers, guaranteeing also distribution. In food product packaging, hydrophobic silica avoids clumping in powdered items. Its low cost and flexibility make it a recommended choice for producers seeking to maximize performance without endangering budget plans.

Whether improving product longevity, stability, or performance, inexpensive hydrophilic and hydrophobic fumed silica dioxide supplies customized services across sectors. Its high SiO2 web content guarantees pureness and efficiency, making it crucial in sectors varying from building to cosmetics.

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 Cheap Hydrophilic and hydrophobic fumed silica dioxide 90%-99% SiO2 content fine white fumed precipitated silica powder

What is the difference between hydrophilic and hydrophobic fumed silica? Hydrophilic fumed silica has hydroxyl groups on its surface, making it water-attracting, ideal for applications requiring moisture retention or thickening in water-based systems. Hydrophobic fumed silica is chemically treated to repel water, suited for moisture-resistant uses like coatings or silicone rubber. The choice depends on whether water interaction is desired in the end application.

What industries commonly use this silica powder? Both types are used in coatings, adhesives, sealants, and pharmaceuticals. Hydrophilic silica is popular in food, cosmetics, and personal care for its thickening and anti-caking properties. Hydrophobic silica is preferred in paints, inks, and silicone products for its water resistance and improved dispersion in non-polar matrices. High SiO2 content ensures stability in demanding industrial environments.

Why does SiO2 content (90%–99%) matter? Higher SiO2 purity enhances performance in reinforcement, viscosity control, and chemical stability. For example, 99% silica offers superior thickening and anti-settling in coatings, while 90% may suffice for less demanding applications. The grade chosen balances cost and functional requirements, ensuring optimal results without over-specifying material quality.

How should this silica be handled and stored? Store in a cool, dry place, sealed to prevent moisture absorption (critical for hydrophobic grades). Use PPE like masks and gloves to avoid inhaling fine particles or skin contact. Avoid high humidity to prevent clumping. Keep away from incompatible substances like strong acids or bases, which may alter silica’s properties.

Is cheap fumed silica powder cost-effective for industrial use? Yes. Despite being affordable, it maintains high performance as a thickener, filler, or anti-settling agent. Hydrophobic and hydrophilic options provide versatility across applications, reducing the need for expensive additives. Its chemical inertness and thermal stability further lower long-term costs by minimizing degradation or process adjustments. Always verify compatibility with your specific formulation to maximize value.

(Cheap Hydrophilic and hydrophobic fumed silica dioxide 90%-99% SiO2 content fine white fumed precipitated silica powder)