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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 investment casting applications.
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Documents
- Manufacturer: Grace
- Product Line: LUDOX® Monodispersed Colloidal Silica
- Product: LUDOX® Colloidal Silica
- Industries: Facility Infrastructure | Maintenance, Repair, Overhaul | Metal Processing & Fabrication | Transportation
- Authorized Countries: Canada | United States
Fulfilled By ChemPoint
Fulfilled By ChemPoint
Manufacturer
Product Line
Product
Industries
Authorized Countries
Canada
United States
Overview
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, a defoamer, and a 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.
Related Applications
Metal Processing & Fabrication
Related End Markets
Facility Infrastructure
Maintenance, Repair, Overhaul
Metal Processing & Fabrication
- Aerospace & Aviation
- Consumer Products
- Electronics
- General Industrial
- Heavy Industry
- Medical & Pharmaceutical
Related Functions
Metal Processing & Fabrication
Related Substrates
Metal Processing & Fabrication
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