
- Principal:Silbond Corporation
- Functions:Adhesion Promoter, Binder, Binder & Resin, Coupling Agent, Coupling Agent, Crosslinking Agent, Intermediate, Surface Modifier
- Chemical Family:Silicates
- End Uses:Chemical-Resistant Coatings, Primer, Slurries
- Compatible Substrates & Surfaces:Ceramic, Glass, Metal
- Compatible Polymers & Resins:Silicones
- Applicable Processes:Investment Casting, Precision Casting, Sol-Gel Process
Dynasylan® SILBOND® 50 is a clear, low-viscosity liquid that is one of the most concentrated forms of available silica, ranging from 45.0% to 47.0% (the Si content of Dynasylan® SILBOND® 50 is calculated as SiO2 ). Dynasylan® SILBOND® 50 is an ethyl polysilicate that is the partially hydrolyzed product of tetraethyl orthosilicate (TEOS). The partial hydrolysis of TEOS (Si[OEt]4 ) results in the conversion of ethoxy groups to hydroxyl groups forming silanols. Subsequent condensation of silanols will form siloxane bonds (-Si-O-Si-O-) and eventually cause the material to gel. Dynasylan® SILBOND® 50 is often used as an intermediate, which is further hydrolyzed to produce a binder that can be used for many applications. This binder is used for inorganic zinc-rich primers, investment casting molds, cores and ceramic shapes, and coatings.