What Is The Material Of The Glass? What Are The Characteristics Of High Borosilicate Glass?

In people's impression, glass is a fragile transparent material, and because the debris is sharp and easy to hurt, safety is not strong. However, with the development of science and technology, people can not only give full play to the natural advantages of glass, but also adjust its performance to make up for its shortcomings. We will introduce what material glass glasses are usually made of in the following section to help you understand what characteristics high borosilicate glasses have.

1.What kind of material is a glass cup usually made of？

Common glass materials are mainly sodium calcium glass, borosilicate glass, glass-ceramics, tempered glass and so on.

Sodium-calcium glass, one of silicate glass. It is mainly composed of silica, calcium oxide and sodium oxide. Such as commonly used flat glass, bottles, cans, light bulbs, etc.

Borosilicate glass is obtained by replacing some of the alkali metal oxides in ordinary glass with boron oxide. That is, high boron and low silicon borosilicate glass without alkali metal oxides. Crown glass and barium crown glass belong to alkali borosilicate glass system. It has good chemical stability, so it is widely used in the chemical industry.

Microcrystalline glass refers to the addition of some nucleating substances in the glass, through heat treatment, light irradiation, or chemical treatment and other means, a large number of tiny crystals are uniformly precipitated in the glass to form a dense microcrystalline phase and a polyphase complex of glass phase. By controlling the number of types and size of the crystals, we can obtain transparent glass-ceramics, glass-ceramics with zero expansion coefficient, glass-ceramics with surface strengthening, glass-ceramics with different colors or machinable glass-ceramics.

2.What are the characteristics of high borosilicate glass？

High borosilicate glass (also known as hard glass), is the use of glass at high temperature conductive characteristics, by heating inside the glass to achieve glass melting, processed by advanced production technology, because of the linear thermal expansion coefficient of (3.3 0.1)×10-6/K, also known as "borosilicate glass 3.3". It is a special glass material with low expansion rate, high temperature resistance, high degree, high hardness, high transmittance and high chemical stability. Because of its excellent performance, it is widely used in kitchen glasswares, solar energy, chemical industry, pharmaceutical packaging, electric light source, process jewelry and other industries. Its good performance has been widely recognized by all walks of life in the world, especially in the field of solar energy is more widely used, Germany, the United States and other developed countries have been more widely promoted.

Borosilicate glass has a very low coefficient of thermal expansion, about one-third of that of ordinary glass. This will reduce the impact of temperature gradient stress, resulting in stronger fracture resistance. Due to its very small shape deviation and stable chemical performance, this makes it an essential material in healthy kitchen glasswares, telescopes and mirrors. It can also be used to dispose of high-level nuclear waste.