With the development of the economy and the progress of science, the glass industry has also been constantly advancing, and while developing new varieties, the existing glass types have also been strengthened. Various types of deep processed glass are gradually replacing ordinary flat glass and shining in their respective application fields. Glass is a fragile item. Do we know why glass breaks?

This involves the materials and composition of glass. The main raw materials for manufacturing glass are SiO2 and quartz. Glass is a non crystalline solid obtained through melting, cooling, and solidification. Its structure has certain rules in the atomic and molecular range (short-range order), but there are no rules in the microscopic range (long-range disorder). It can be made into various shapes by relying on molds. The irregular structure of glass determines its following characteristics:

1. Isotropic. The placement of particles in glass is generally irregular, but also computationally uniform, therefore, its physical and chemical properties are the same in any direction. And crystals are anisotropic. Example: resistivity, thermal conductivity, transmittance, refractive index, etc.

2. No fixed melting point. The transformation of glass from a solid to a liquid occurs gradually within a certain temperature range. And crystals have a confirmed melting point, for example, ice (a crystal of water) melts at 0 ° C This characteristic of glass allows it to be shaped using various methods such as blowing, pulling, and pressing.

3. Adjustable composition and functionality. The function of glass can undergo continuous and gradual changes within a certain range depending on its composition And crystals have fixed components and confirmed functions. In this way, we can adjust the composition of the glass to meet its functional requirements.

Generally, glass is fragile because the grains it crystallizes into are coarse and the bonding between them is not tight, making it easy for the crystal structure to loosen and cracks to propagate. This is the principle of glass cutting with a glass knife.

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