SK-60S Special Hydrophobic Silica

Features:

SK-60S Special Hydrophobic Silica is based on a specialty white carbon black with over 99.5% silica content, treated with hexamethyldisilazane and modified in spatial structure. The treatment involves in-situ modification and surface coating, along with spatial structure modification. This product has a primary particle size of just 30-60 nanometers, a specific surface area of about 60 m²/g, and a very low metal ion content. It combines the high purity and low volatile content of fumed silica, while avoiding the impact of sulfates found in precipitated silica. The spatial structure modification ensures excellent particle size uniformity.

Applications:

• Defoamers
• Rubber products

Properties:

• The excellent pore structure significantly enhances the spreading coefficient of silicone-based defoamers.
• The hydrophobic surface structure and uniform particle size efficiently aid in the rapid foam-breaking of polyether-based defoamers.
• High hydrophobic treatment depth and low specific surface area help improve powder dispersion in systems.
• The high purity prevents impurities in silica from affecting the defoaming performance.
• Low specific surface area and high hydrophobicity allow for a higher loading ratio in rubber products, reducing compression set and slightly improving temperature resistance.