1. Introduction
Hydrated glasses exhibit plasticity even at room temperature and are characterized by interesting mechanical and electrical properties. Conventionally melted silicate glasses generally contain 0.01–0.1 wt.% water. It is known that even such a small amount of water does affect various properties of glass such as viscosity, thermal expansion, chemical resistance, and mechanical and electrical properties [1] and [2]. For example, an increase in water content increases the expansion coefficient and decreases the viscosity and the chemical durability. Currently, a lot of research on such hydrated silicate glass adopted the hydrothermal pressure method, which could be separated into two steps. The first step, silicate glass is prepared by melting the raw materials and then cooling and molding. The second step, the hydrated glass is obtained by putting the silicate glass into a container with water under high pressure and certain temperature. There is also a one-step method, which is combining the two above-steps, i.e., melting the raw materials under high temperature and certain humidity conditions [3], [4], [5] and [6]. But the above-methods require severe reaction conditions, such as high temperature or accurate vapor concentration. So it is important to find a simple and low-temperature method for the synthesis of hydrated glass.