DYNASYLAN SILBOND 40

DYNASLYAN SILBOND 40 is a clear, low-viscosity liquid with a minimum silica content of 40.0% (the Si content of DYNASYLAN SILBOND 40 is calculated as SiO2). It 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 40 improves the properties of advanced materials by depositing a thin SiO2 layer that improves the chemical and thermal stability and mechanical properties. It is often used as an intermediate which is further hydrolyzed to produce a binder that can be used in applications like inorganic zinc-rich primers, investment casting molds, cores and ceramic shapes, coatings, and thermal insulation.