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LUDOX® SK
LUDOX® SK is an acidic colloidal silica that contains a water soluble polymer. It is an ideal binder for in investment casting applications.
LUDOX® SK is a slightly acidic aqueous dispersion of 12 nanometer amorphous silica particles. It contains 25% silicon dioxide, a water soluble green strength polymer, defoamer, and wetting agent. LUDOX® SK is a complete binder formulation ideal for casting applications.
Specifications
Density (g/cm³, lb/gal): 1.17, 9.7 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: None Particle Charge: Negative Biocide ppm: 25
Primary Chemistry: Colloidal Silica
Features & Benefits
Anionic Particles Small particle size Narrow particle size distribution Green strength polymer and defoamer Contains surfactant to aid slurry adhesion to wax pattern Long slurry life Low sodium content enhances high temperature shell properties
Problems Solved
Low strength of investment casting molds that lead to defects in the casted product. Inefficiencies of formulating a binder for investment casting applications.
Applications
LUDOX® SK is typically used as a binder for face coat slurries in precision investment casting. The surfactant in the formulation allows for excellent adhesion to wax molds. LUDOX® SK is free from sodium and as such is highly stable at extreme temperatures used in the casting process. It provides improved green strength and added durability to ceramic molds.
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Thank you for your inquiry and interest in ChemPoint. We will respond to you shortly.
ChemPoint will not under any circumstances release personal user information to individuals or companies. All information collection is solely used to support ChemPoint customers service communications. Read our Privacy Notice.
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