LUDOX® HS-40 is a freeze thaw stable colloidal silica with a particle size of 12 nanometers that is used as a binder for coatings and refractory materials.
LUDOX® HS-40 is an alkaline, aqueous dispersion of 12 nanometer silica. It contains 38% solids and is freeze thaw stabilized with ethylene glycol. LUDOX® HS-40 FS is primarily used as a high stability binder for refractory fibers used in high temperature applications. In coatings and adhesives it works to improve durability and cohesion of the system by acting as a cross-linker. LUDOX HS® HS-40 FS can also be used as an adhesion promoter for inorganic surfaces like metal and glass. Because of the freeze thaw stability, LUDOX® HS-40 FS is suited for cold weather climates and situations where temperature controlled storage is not available.
Density (g/cm³, lb/gal): 1.3, 10.8
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
Small particle size
Narrow particle size distribution
High thermal stability
Freeze / thaw stable
Excellent binders
Adhesion promoters
Anti-slip properties
Anti-blocking agents
Soil retardants
Reinforcing agents for improved resistance
Improved polishing performance
Accidental freezing of LUDOX® HS-40 during storage or use in cold weather climates.
Low cohesive strength of coatings and adhesives that lead to structural failure.
Paper and cardboard coatings
Floor coatings
Surface and floor polishes
Adhesives
Caulks and sealants
Elastomeric foams
Catalyst formulations
Molecular sieves
Refractories
Cement products
Insulation boards
Functional coatings
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