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LUDOX® LS
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.
Fulfilled By ChemPoint
- Manufacturer: Grace
- Product Line: LUDOX® Monodispersed Colloidal Silica
- Product: LUDOX® Colloidal Silica
- Industries: Adhesives | Building & Construction | Coatings
- Authorized Countries: Canada | United States
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Overview
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.
Specifications
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
Features & Benefits
Excellent binding strength
Stability in most applications
Lower pH
Low sodium content
Small particle size
Narrow particle size distribution
Compatible with organic solvents
Problems Solved
Poor green strength leading to ceramic defects.
Failure of ceramic binder at high heat due to the presence of a flux material like sodium.
Applications
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 water-based coating formulations containing that contain organic co-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.
LUDOX® LS is an excellent source of silica for concrete densifiers. The particle size of the amorphous silica in LUDOX® LS allow for it to easily penetrate the porous surface of concrete an interact with cement to increase density and hardness of the concrete.
Related Applications
Related CAS Numbers
Building & Construction
Related Chemistries
Related Functions
Adhesives
Building & Construction
Coatings
Related Technologies
Coatings
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