Dynasylan® SILBOND® H-25

Dynasylan® SILBOND® H-25 is a clear, low-viscosity pre-hydrolyzed ethyl polysilicate binder with minimum 24.5% silica (as SiO₂). Its primary use is in the production of facings and molds for precision investment casting. Other applications include formation of ceramic shapes and cores.

Typical Applications

Its primary use is in the production of facings and molds for precision investment casting. Other applications include formation of ceramic shapes and cores.

Benefits at a glance

Dynasylan® SILBOND® H-25 can be used, as delivered, to make ceramic molds for the Precision Investment Casting industry.
The degree of hydrolysis and acidity have been optimized for the required reactivity and sufficient storage stability.
The hydrolysis and condensation has been started during the production of the binder. Through a shift in the pH this process is accelerated. This shift is achieved by addition of fillers, pigments, additive, or through the evaporation of solvent or exposure to atmospheric moisture. The resulting silicic acid gel cures rapidly at ambient temperatures in air. The process of curing can be accelerated through the addition of alkali catalysts.

Product Details

Technical Data Sheets

Further Information

Packaging:

Dynasylan® SILBOND® H-25 could be available in pails, drums, totes and tanker quantities.
Please ask for further details.

Shelf life:

In unopened container Dynasylan® SILBOND® H-25 has a shelf life of min. 6 months from date of manufacture.