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Chemically Synthesized Hexagonal-Plate Magnesium Hydroxide

    Chemically Synthesized Hexagonal-Plate Magnesium Hydroxide

    Wanfeng's DF-5 series magnesium hydroxide is a flame-retardant grade with a special crystal structure (hexagonal plate shape), featuring fine particle size and low specific surface area. Its uniform and finer particle distribution, low specific surface area, and regular morphology greatly enhance the dispersion of the powder in polymer matrices, imparting better flame-retardant and processing properties to polymeric materials.
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Wanfeng's DF-5 series magnesium hydroxide is a flame-retardant grade with a special crystal structure (hexagonal plate shape), featuring fine particle size and low specific surface area. Its uniform and finer particle distribution, low specific surface area, and regular morphology greatly enhance the dispersion of the powder in polymer matrices, imparting better flame-retardant and processing properties to polymeric materials.

Surface-modified (coated) magnesium hydroxide improves polymer compatibility, increases filler loading, reduces viscosity, and raises the melt flow index — making it a leading product for advanced composite materials such as plastics, rubber, and specialty cables.

Technical Reference

Powder Specifications (before coating modification)

SpecDF-5DF-7DF-5BH6DF-5MZDF-5A9DF-5A51
Content (%)≥99.5≥99.5≥99.5≥99.5≥99.5≥99.5
Chloride (%)≤0.05≤0.05≤0.05≤0.05≤0.05≤0.05
Whiteness≥97≥97≥97≥97≥97≥97
Particle size D50 (μm)1-1.50.9-1.21-1.51-1.51-1.51-1.5
Specific surface area (m²/g)4-66-84-64-64-64-6
ModificationUnmodifiedUnmodifiedSpecial silaneSpecial additiveSpecial silaneSpecial additive
FeatureHigh tensile strengthHigh elongation at breakHigh LOIHigh break & good elongation——

Composite Performance in EVA/PE Matrix (data varies by formulation; for reference only)

Base formulation: EVA 24.98 / PE 8.31 / Compatibilizer 6.66 / Mg(OH)₂ 58.28 / Silicone masterbatch 1.00 / Others 0.77

Elongation at break (%)189219220300235250
Tensile strength (MPa)12.914.315.812.514.714.5
Melt flow index (g/10min)1.10.61.53.01.83.0
Limiting Oxygen Index (LOI)393941404540


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