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LUDOX® HS-40 is a aqueous, colloidal silica with a particle size of 12 nm that is used as a high stability binder in coating and refractory applications.
LUDOX® HS-40 is an alkaline, 40% solids, aqueous dispersion of silica with a particle size of 12 nanometers. It is used as a binder of inorganic materials in ceramics, refractories, and casting to improve green strength of formed shapes. LUDOX® HS-40 is also used as a binder / cross-linker in coating applications that require improved durability and slip resistance. In water-based adhesives it can be used to promote adhesion to inorganic surfaces like metal and glass while also improving durability.
Product Specifications
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
Features & Benefits
Small particle size Narrow particle size distribution High thermal stability Excellent binders Adhesion promoters Anti-slip properties Anti-blocking agents Soil retardants Reinforcing agents for improved resistance Improved polishing performance
Problems Solved
Adhesion failure of water based coatings and adhesives to metal and glass surfaces. Poor durability of coatings used in applications that require abrasion resistance. Poor thermal stability of organic binders.
Applications
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
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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