Premadex® is manufactured as a liquid at 95° to 100°C and can be poured at the factory directly into suitable prepared assemblies, such as glove box panels, neutron source containers and shielding doors. Alternatively, particularly large assemblies can be filled on site by arrangement.
It is also available in block form. Standard blocks are 400mm x 300mm or 280mm x 280mm, either 50mm or 75mm thick. They are easy to trim or cut to shape. Blocks can be produced in non-standard sizes to suit individual requirements.
Installation of Premadex®
Within a Floor
Within a Floor
Click image to enlarge
Physical Properties
Top| Physical Properties | |
|---|---|
| Appearance | Opaque creamy white |
| Coefficient of Expansion (Vol) | 2-3 x 10-3K-1 |
| Texture | Slightly waxy solid |
| Thermal Conductivity | 0.3-0.4 W m-1 K-1 |
| Density | 1.0 g cm-3 |
| Resistance to Acid | Excellent |
| Melting Point | 85-90° C |
| Toxicity | LD50 assessed as 15g kg-1 |
| Fire Resistance | Non-flammable |
| Ageing | Contains bacteriocides and antioxidants for long term stability. |
| Heat of Combustion | 22MJ kg-1 |
Premadex® is an ideal shield wherever neutrons are found. Typical
areas of application include particle accelerator facilities, neutron
source containers, glovebox construction, nuclear facilities and
room-scatter attenuation.
Elemental Composition
Top| Element | Percentage by Weight | Concentration (Atoms cm-3) |
|---|---|---|
| Hydrogen | 11.4 | 6.81 x 1022 |
| Lithium[1] | 1.3 | 0.11 x 1022 |
| Oxygen | 39.9 | 1.51 x 1022 |
| Carbon | 47.4 | 2.38 x 1022 |
[1] 6Li 7.30%, 7Li 92.70%
