Mineral method of magnesium hydroxide
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Introduction
I. Product introduction
The ore method of magnesium hydroxide is used as a raw material of watermagnesium aragonite, and after crushing, surface modification and other processtreatments, it can be used as magnesium hydrooxide flame retardant. Our company's MHseries products are special functional composite surface treatments of mineral-basedmagnesium hydroxide for the production of mineral fillers for halogen-freethermoplastics and heat-resistant compounds, which can obtain flame retardantproperties and achieve low smoke emissions, while also reducing the toxicity of gases
emitted from the combustion process
The characteristics of the modiffiedmagnesium hydroalide compared to the rawpowderare as follows
Improve powder flow Powder hydrophobic, low moisture absorption Increase powder filling Improvepermeability Improve dispersion Improve product stretching, twisting, impacting and other properties.
Improve compatibility with polymers-Reduce viscosity to improve melting finger.
II. Indicator Reference
| Indicator | MH-3812 | MH-1124 | WH-381 | MH-385 | MH-3A51 |
|---|---|---|---|---|---|
| Content before coating modification (%) | ≥88 | ≥88 | ≥60 | ≥88 | ≥88 |
| Chloride ion (%) | ≤0.05 | ≤0.05 | ≤0.2 | ≤0.05 | ≤0.05 |
| Whiteness | ≥90 | ≥90 | ≥90 | ≥85 | ≥90 |
| Particle size D50(μm) | 2.5-3.5 | 2.5-3.5 | 2.5-3.5 | 2.5-3.5 | 2.5-3.5 |
| Bulk density(g/ml) | ≤0.45 | ≤0.45 | ≤0.45 | ≤0.45 | ≤0.45 |
| Modification | Fatty acid modification | Silane modification | Fatty acid modification | Silane modification | Special additive modification |
| Features | High elongation at break | Good comprehensive performance | No color change during processing | High tensile strength | High elongation at break |
The performance indicators of different models are as follows (data varies with different formulations, for reference only):
| EVA/PE Substrate Formulation Ratio | Base Formulation | MH-3812 | MH-1124 | WH-381 | MH-385 | MH-3A51 | |
|---|---|---|---|---|---|---|---|
| EVA | 24.98 | Elongation at break (%) | 174.82 | 150.20 | 164.01 | 140.20 | 165 |
| PE | 8.31 | Tensile strength (Mpa) | 9.85 | 11.91 | 9.77 | 13.15 | 11.3 |
| Compatibilizer | 6.66 | Melt flow index (g/10min) | 2.5 | 1.8 | 1.9 | 1.7 | 2.2 |
| Mg(OH)₂ | 58.28 | Limiting Oxygen Index (LOI) | 36 | 39 | 36 | 39 | 37 |
| Silicone masterbatch | 1.00 | ||||||
