Timing glass is an amorphous material with a single component of silicon dioxide, and its microstructure is a simple network composed of silicon dioxide tetragonal structural units. Due to the high energy and compact structure of Si-O chemical bond, the timely glass has unique properties, especially the transparent timely glass has excellent optical properties and excellent transmittance in the continuous wavelength range of ultraviolet to infrared radiation.
Secondly, the formation of timely glass is due to the high viscosity of its melt at high temperature. Widely used in manufacturing semiconductors, electric light sources, semiconductor communication devices, lasers, optical instruments, laboratory instruments, electrical equipment, medical instruments, high-temperature and corrosion-resistant chemical instruments, chemical industry, electronics, metallurgy, building materials and national defense industries.
High-purity timely glass can be used to manufacture optical fibers.
Third, classification
Electrofusion glass
Gas refining timely glass
Arc-shaped timely glass
Synthesis of high purity timely glass
Infrared optical time-sensitive glass
Ultraviolet time-sensitive glass
Opaque timing glass
Fourth, characteristics:
1, impermeability
2. Breathability
At room temperature, timely glass can be considered airtight, and at high temperature (such as 700℃), the permeability constant of some gases is also very small.
3. Electrical performance
Timely glass is an excellent high-temperature dielectric insulating material.
4. Optical properties.
The optical characteristics of timely glass are unique. It can not only transmit the best far ultraviolet spectrum of all ultraviolet-transmitting materials, but also transmit visible light and near infrared spectrum.
5. Thermal characteristics
The thermal expansion coefficient of the glass is very small.
6, mechanical properties
The mechanical properties of timely glass are better than hard glass and ceramics, but its brittleness is poor.