Hardener

SDTECH Hardener is a colloidal silica compound used to treat the surfaces of ceramic fiber and other refractory materials. It forms a hardened layer of uniform thickness to improve surface hardness and wind-erosion resistance, extending the service life of refractory materials.
The hardener can be applied by spraying or brushing, and should not be used in low-temperature or freezing conditions.

1. Features
  • Improved surface hardness and erosion resistance
  • Excellent wind erosion resistance
2. Applications
  • Surface coating for ceramic fiber blankets exposed to high-velocity airflow environments
  • Surface treatment of molds and formed bodies
  • Surface hardening treatment for vacuum-formed products
3. Specification
Division SD 1200
Classification Temperature(℃) 1,400
Density(kg/m³) 1,150 - 1,400
Coverage Rate (kg/m²) 2 -6
Packaging 20kg / bucket