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.

(China fumed silica R202 countertype amorphous powder hydrophobic fumed silica HB 139)

Specification of China fumed silica R202 countertype amorphous powder hydrophobic fumed silica HB 139

China Fumed Silica R202 Countertype Amorphous Powder Hydrophobic Fumed Silica HB 139 is a high-performance, synthetic silica item engineered for applications requiring boosted hydrophobicity and rheological control. Produced with a fire hydrolysis procedure, this fumed silica is treated with silane to achieve a hydrophobic surface area, making it excellent for usage in systems where moisture resistance and stability are essential.

** Secret Specifications: **.
– ** Appearance: ** White, free-flowing amorphous powder.
– ** Chemical Structure: ** High-purity silicon dioxide (SiO ₂ ≥ 99.8%).
– ** Surface Therapy: ** Hydrophobic (organosilane-modified).
– ** Surface (WAGER): ** 100– 160 m ²/ g.
– ** Primary Particle Size: ** 7– 16 nm.
– ** Bulk Density: ** 30– 60 g/L.
– ** Loss on Drying (105 ° C, 2h): ** ≤ 1.5%.
– ** pH (4% in water): ** 3.6– 4.3.
– ** Hydrophobicity: ** Outstanding water repellency, determined by methanol wettability.

** Secret Applications: **.
– ** Coatings & Inks: ** Improves anti-sagging, anti-settling, and matting results; enhances weather resistance.
– ** Adhesives & Sealants: ** Functions as a thixotropic representative, improving viscosity and avoiding downturn.
– ** Silicone Rubber: ** Strengthens mechanical properties, offers tear resistance, and preserves transparency.
– ** Plastics & Composites: ** Improves circulation control and minimizes shrinkage.
– ** Personal Care: ** Utilized in cosmetics for appearance improvement and oil absorption.

** Benefits: **.
– Superior diffusion in polar and non-polar matrices.
– Exceptional thermal stability (up to 600 ° C).
– Enhances mechanical toughness and toughness of end products.
– Reduces treating time in silicone applications.
– Resists clumping and moisture absorption throughout storage space.

** Packaging & Storage: **.
Supplied in 10 kg or 20 kg moisture-resistant laminated paper bags. Store in a trendy, completely dry atmosphere away from direct sunlight.

** Safety & Conformity: **.
Safe and non-reactive under normal conditions. Adhere to standard PPE (gloves, masks) throughout handling to stay clear of breathing. Complies with REACH, RoHS, and various other international policies.

** Why Select HB 139? **.
This quality is maximized for markets requiring regular quality, hydrophobic performance, and convenience of assimilation. Its low dampness web content and high purity make certain marginal disturbance with host products, making it a versatile additive for advanced formulas. Manufacturers gain from its capability to improve item life expectancy and performance across diverse applications.

(China fumed silica R202 countertype amorphous powder hydrophobic fumed silica HB 139)

Applications of China fumed silica R202 countertype amorphous powder hydrophobic fumed silica HB 139

China fumed silica R202 countertype amorphous powder hydrophobic fumed silica HB 139 is a high-performance material engineered for varied industrial applications. Produced using flame hydrolysis of silicon tetrachloride, this hydrophobic fumed silica features a nanoscale amorphous framework with a high area, extraordinary pureness, and water-repellent residential or commercial properties as a result of surface treatment with siloxane or silicone liquids. Its distinct characteristics make it a flexible additive throughout numerous markets.

In finishes, inks, and paints, HB 139 functions as a rheology modifier, supplying thixotropic behavior to avoid sagging or leaking during application. It improves scrape resistance, sturdiness, and weatherproofing in architectural and auto layers. For adhesives and sealants, it boosts mechanical strength, viscosity control, and treating performance while reducing contraction. Its hydrophobic nature guarantees dampness resistance, ideal for outside or high-humidity settings.

In silicone rubber and elastomers, HB 139 serves as an enhancing filler, boosting tensile stamina, flexibility, and thermal security. It maximizes processability in liquid silicone rubber (LSR) and high-consistency rubber (HCR) for vehicle, electronic devices, and clinical gadgets. The powder likewise operates as an anti-caking and flow aid in drugs, cosmetics, and food-grade powders, guaranteeing smooth structure and extended life span.

HB 139 is integral in composite products, enhancing mechanical residential properties and dispersion in resins, plastics, and porcelains. Its reduced wetness absorption boosts electric insulation in cable finishings and electronic encapsulants. In addition, it is made use of as a defoamer in lubricating substances, paints, and commercial liquids, lowering surface area stress for reliable foam control.

The product’s chemical inertness, thermal resistance (up to 600 ° C), and UV security make it appropriate for extreme environments. Its flexible surface treatment allows modification for specific compatibility with polar or non-polar matrices. Produced under rigorous quality controls, China fumed silica HB 139 provides a cost-effective choice to global equivalents without jeopardizing performance. It is available in numerous packaging choices to fulfill bulk commercial or customized needs, making sure ease of managing and storage space. This material is a trusted option for markets prioritizing efficiency, longevity, and advancement.

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 China fumed silica R202 countertype amorphous powder hydrophobic fumed silica HB 139

China fumed silica R202 countertype amorphous powder hydrophobic fumed silica HB 139 is a high-performance material used in coatings, adhesives, and industrial applications. Below are five FAQs with direct answers:

**1. What is HB 139 hydrophobic fumed silica?**
HB 139 is a hydrophobic fumed silica produced via flame hydrolysis, treated with silane for water-repellent properties. It acts as a thickening, anti-settling, and anti-caking agent in coatings, sealants, and composites, offering high purity and chemical stability.

**2. What industries use HB 139?**
It’s widely used in paints, coatings, adhesives, and sealants to enhance rheology and prevent sagging. It also serves in cosmetics, pharmaceuticals, and silicone rubber for texture improvement and reinforcement.

**3. Why is HB 139 hydrophobic?**
Its surface is modified with silane during production, creating a non-polar layer that repels moisture. This ensures stability in humid conditions and compatibility with non-polar matrices like silicone.

**4. How does HB 139 compare to R202?**
HB 139 is designed as a cost-effective alternative to R202, matching its particle size, surface area (~100-160 m²/g), and hydrophobicity. It offers similar performance in thickening and reinforcement but may vary in bulk density or pH based on production methods.

**5. Is HB 139 safe to handle?**
While non-toxic, inhalation of fine particles can irritate the respiratory system. Use PPE (masks, gloves) during handling. Store in a dry, cool area away from moisture to maintain performance. It complies with international safety standards for industrial use.

HB 139 is ideal for manufacturers seeking a reliable, hydrophobic additive to improve product durability and processing in high-moisture environments.

(China fumed silica R202 countertype amorphous powder hydrophobic fumed silica HB 139)