Product Overview

WACKER HDK N20 fumed silica is a synthetic hydrophilic amorphous silica prepared by flame hydrolysis.

Product Characteristics

• High purity: the silica content is up to 99.8%, the impurity content is very low, with excellent chemical stability and purity.
• Large specific surface area: the specific surface area is 200±30m²/g, the large specific surface area makes it have strong surface activity and adsorption capacity.
• Small particle size: the average particle size is 7-40nm, the particles are fine and uniform, can be uniformly dispersed in various systems, effectively avoiding agglomeration and precipitation.
• Diversified performance: it has the characteristics of anti-sedimentation, anti-dangling flow, thickening thixotropy, anti-settling, etc., which can improve the stability and processing performance of the system.

Product Applications

• Paints and coatings: As anti-settling, thickening and anti-sagging additives, it improves the stability and construction performance of coatings, and gives coatings better hiding power and gloss.
• RTV Silicone Sealants and Printing Inks: Improve the rheology and thixotropy of the products, so that the sealants can be easily extruded during construction and the inks can be transferred evenly during the printing process, improving product quality.
• Cable insulating adhesives and cable gels: used as reinforcing agents to improve the insulating properties and durability of cables and enhance their adaptability to the environment.
• Food and cosmetic products: used as an additive to increase fluidity and anti-caking, improve the taste and texture of products, make food and cosmetics easier to process and use.
• Other fields: It can also be used in unsaturated polyester resins, laminating resins and gelcoats, silicone rubbers, adhesives and sealants, batteries, plant protection, and heat-insulating materials, etc., as reinforcing, thickening, and improving stability.