Magnesium hydroxide
FIMATEC LTD. offers a range of non-halogen flame retardants, including the Junmag series, which has ground brucite, an ore composed primarily of magnesium hydroxide, and natural magnesium hydroxide produced in Russia, which is a non-halogen flame retardant.
Magnesium hydroxide decomposition begins at 350℃ by the separation of water of crystallization. The endothermic reaction and the dilution effect of the combustion gas caused by the water vapor that is generated results in a flame retardant effect. We get our subcontracting plant in China to grind and process brucite ore, which is primarily composed of magnesium hydroxide. It is well known as a non-halogen flame retardant. We have achieved low-cost product manufacturing through local OEM.
Junmag Series
The Junmag series is a non-halogen flame retardant consisting of ground brucite, which is composed mainly of magnesium hydroxide. It is used as a low-smoke flame retardant for resin (LSZH).
Junmag is available in fine and coarse grades.
| Measurement item | Measured value | Measurement method | |
|---|---|---|---|
| Average particle size | 4µm | 12µm | Particle distribution measuring machine |
| Mg(OH)2 | 94% | Chemical analysis (calculated value from MgO) | |
Note: Not a guaranteed value
Surface Treated Products
Surface treatment improves the physical properties by increasing the compatibility with resin.
Moreover, by surface treatment with the chemicals proposed by customers, we can expect further modifying effects.
SEM Photo
Natural Magnesium Hydroxide Produced in Russia
This is a non-halogen flame retardant that achieves cost reductions and can be supplied stably thanks to its abundance.
| Grade | % | ECOPIREN3.5 | ECOPIREN3.5CN |
|---|---|---|---|
| Average particle size | μm | 3.5 | 3.5 |
| Moisture | % | 0.5> | 0.5> |
| MgO | % | 64.8 [ Ig. Loss conversion Mg(OH)2: 94.0 ] |
|
| MgO | % | 64.8 | |
| CaO | % | 2.1 | |
| SiO2 | % | 1.2 | |
| Fe2O3 | % | 0.11 | |
| Al2O3 | % | 0.1 | |
| Surface treatment volume (stearic acid) | % | – | 3.0 |
Other products with an average particle size of 5, 10 μm and that are treated with silane coupling are also available.
