LUDOX® HS-30 is a colloidal silica with an average particle size of 12 nm particle size. It is used as a binder in casting and ceramics applications.
LUDOX® HS-30 is a 30% solids, alkaline dispersion of anionic amorphous silica. Due to its intermediate particle size it provides good binding strength as well as formulation stability. LUDOX® HS-30 is formulated to the optimum silica level for use as a binder in investment casting and ceramics. LUDOX® HS-30 is commonly used to bind inorganic materials including metals and oxides like aluminum, iron, and ceramic fibers used in ceramics manufacturing. LUDOX® HS-30 improves green strength of formed ceramic parts and reduces defect rates during production. Additionally it is used as a binder
and cross-linker in coating formulations to improve cohesion, durability, and soil resistance.
LUDOX® HS-30 is also used in adhesive formulations to promote adhesion to inorganic substrates like metal and glass. Durability of adhesives is also improved by LUDOX® HS-30.
The electrostatic nature of LUDOX® HS-30 also makes it an efficient flocculant for waste water and paper making applications where positively charged contaminants must be removed. This functionality also proves useful in beverage fining applications. Food grade material is available for use in beverage fining applications.
Density (g/cm³, lb/gal): 1.21, 10.1
Boiling Point (760 mm Hg) °C/°F: 100/212
Melting Point °C/°F: 0/32
Vapor Pressure (25°C) mm Hg: 24
Vapor Pressure (38°C) mm Hg: 48
Stabilizing Counter Ion: Sodium
Particle Charge: Negative
Biocide ppm: 240
Primary Chemistry: Colloidal Silica
Anionic Particles
Small Particle Size
Narrow Particle Size Distribution
Alkaline pH Stability
Excellent Bond Strength
Stability in most applications
Optimum Silica Content for Binding in Ceramics and Investment Casting Applications
High defect rate in ceramics manufacturing.
Poor adhesion to metal and glass.
Coatings that scratch and mar easily.
Investment Casting
Vacuum Formed Fibrous Shapes
Refractory Cements
Stool and Mold Coatings
Insulation Board
Ceramics Binder
Adhesives & Sealants
Elastomeric Foams
Paper and Film Coatings
Inorganic Coatings
Anti-Blocking Coating
Anti-Soil Treatment
Adhesion and Wetting Promoter
Beverage Fining
Polishes
Concrete Densifier
LUDOX® Colloidal Silica is used in a wide range of processes to improve the and resiliency of building materials. Formulating LUDOX™ into concrete, coatings, adhesives, and sealants increases productivity and reduces cost while boosting the strength and consistency of the end product.
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