Packaging glass includes glass, ceramics, metal and composite materials, which can be divided into low temperature packaging glass and high temperature packaging glass. When using, choose a sealing glass with a suitable softening temperature and thermal expansion coefficient. High-lead sealing glass that can be used at a relatively low temperature is called solder glass.

Let me talk about the classification and use of packaging glass.

classification:

It can be divided into low temperature sealing glass and high temperature sealing glass. When using, choose a sealing glass with a suitable softening temperature and thermal expansion coefficient. High-lead sealing glass that can be used at a relatively low temperature is called solder glass.

It can be divided into two types: stable and crystalline. Stable solder glass is mainly a two-component system of boron and lead, and some secondary components such as silica, barium oxide, zinc oxide, aluminum oxide and copper oxide are often added to increase stability and reduce thermal expansion coefficient. The basic composition of crystalline solder glass is the lead-zinc-boron ternary system, and the minor components are barium oxide, zinc oxide, aluminum oxide and copper oxide.

use:

Sealing glass is used to seal the screens and cones of television picture tubes, as well as to seal high-performance ceramic microelectronic packages.