LUDOX® LS is an alkaline colloidal silica with a 12 nanometer particle size. It is used as a high temperature stable binder in ceramics manufacturing.
LUDOX® LS is a 30% solids, aqueous dispersion of 12 nm surface modified silica. It is formulated to a lower pH than the HS grades of LUDOX® and contains less sodium stabilizing ions as well. For this reason it is particularly useful in applications where sodium can be detrimental. LUDOX® LS is used as a binder in ceramics manufacturing to provide added green strength and durability to ceramic parts. LUDOX® LS can also be used as a binder in coatings formulations containing organic solvents. It provides added durability to dried films and improves heat and chemical resistance. In adhesive applications LUDOX® LS is used to improve adhesion to glass and metal surfaces and to increase durability of the cured adhesive.
Density (g/cm³, lb/gal): 1.2, 10
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: 225
Primary Chemistry: Colloidal Silica
Excellent binding strength
Stability in most applications
Lower pH
Low sodium content
Small particle size
Narrow particle size distribution
Compatible with organic solvents
Poor green strength leading to ceramic defects.
Failure of ceramic binder at high heat due to the presence of a flux material like sodium.
Paper and film coatings
Industrial water-based coatings
Latex coatings
Electrical steel inorganic coatings
Catalyst formulations
Molecular sieves
Vacuum formed refractories
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