OH-Free Phenyl Modified Siloxane Low-Melting Glasses with Ultra Low Saturated Water-Absorption

Abstract

Organic-inorganic hybrid low-melting glasses with extremely low water-absorption were obtained by the complete removal of OH groups which are hydrophilic substituents from phenyl-modified siloxane glasses by heat-treatment. The saturated water-absorption was estimated to be below 0.1 mass%. The thickness, bulk density and refractive index of such glasses remained unchanged even after soaking in water at 23°C for 192 h.