Description
Fluorescent nano aluminum oxide
Function:
- Nano Al2O3reflects the ultraviolet light through the phosphor layer, which makes it continue to excite the phosphor and improves the luminous efficiency of the fluorescent lamp.
- Nano alumina acts as a barrier layer for mercury diffusion, which can minimize the amount of mercury and prolong the lamp life.
- Nano aluminum trioxide as a binder can improve the bonding strength between phosphor and glass tube, so that phosphor does not fall off.
Usage method:
- The fluorescent lamp is produced by using nano-alumina protective film. First, the nano-alumina protective film is coated inside the glass tube. The coating thickness is about 3-5um.
- In order to improve the bonding strength of phosphor layer, nano sized aluminium oxide is usually added into the slurry of phosphor, the quality of which is 2-5% of that of phosphor.
- Finally, the phosphor with nano-aluminum trioxide is coated on the protective film of alumina in the form of slurry, and then the fluorescent lamp is made by other subsequent process.
Fluorescent nano aluminum oxide
Technical indicators:
| Model | L20Y |
| Crystalline phase | Y phase |
| Appearance | White powder |
| Average particle size(nm) | 20nm |
| Specific surface area(m2/g) | 200 |
| Al2O3 content（％） | 99.99 |
| Density of loss fitting(g/cm3) | 0.25 |
This type of nano alumina particles are small, specific surface area is large, packing density is small, good dispersion, long-term stability and non-precipitation, equivalent to the Degusai nano-alumina powder.
