Glass is an important material in industry or light bulbs. Because glass has special features than other materials such as glass and transparent materials can withstand chemical reactions that occur in the lamp. In addition, Glass is also resistant to high temperatures. And resistant to electricity very well. The type of glass used to make a light bulb
can distinguish the type of glass used to make the bulb into 5 categories as follows:
1. High-silica glasses are glasses that contain high as 96-100% SiO2, which has the following features
- resistant to heat. And temperature changes suddenly
- a low expansion coefficient
- high temperature resistance
- the ability of high impedance
2. Alumimosilicate glasses are glasses containing high Al2O3, the following features
- high impedance
- a low expansion coefficient
- temperature resistant
3. Borosilicate glasses are glasses with the addition of B2O3 into the components made of glass viscosity reduction (Borosilicate glasses can melt at a temperature of 1500 ° C or 2730 ° F), but does not make a coefficient expansion. higher, but somehow also has the following features
- are resistant to chemical reactions as well
- high impedance
- resistant to temperature changes suddenly,
four. Soda-Lime Glasses glass with the addition of (Na2O and K2O) to reduce its viscosity, its ability to resist electric current, and resistance to chemicals. And increase the thermal expansion coefficient of
5. Lead glasses have replaced the glass, CaO and MgO with PbO to enhance their ability to resist electric current, and reduce the viscosity of Lead glasses.
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