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Precipitated Magnesium Hydroxide

Precipitated superfine magnesium hydroxide coated by KMT patent formula, can easy dispersing in PP, PE, EVA, POE, EPDM, XLPE, PA, ABS compound.

High purity, high whiteness, low moisture content, high bulk density, easy flow, anti-bridge and agglomeration-resistant, easily used in auto-loading and feeding system, low compounding torque, no white spot, good surface quality and no shark skin.
Gives good mechanical properties, good flame retardant and smoke absorb properties.
Coating: KMT patent.
Processing temperature less than 300°C.
Packing: 25kg bags or big bag.

Description

Reviews

PM5S

PM5S is a silane coated super fine precipitated MDH with flake type structure and very competitive price.

What is the advantages compare to brucite

99.5% purity, 100% whiteness

PM5S offers higher purity and superior whiteness,

making it more suitable for LSZH compounds consistent quality and color uniformity.

Superfine

PM5S D50 is 1.6um and most brucite powder D50 is over 3um

Finer particles reducing stress concentrations

and enhancing tensile strength, modulus, impact resistance and elongation at break.

What is the advantages compare to ATH?

1: Better char-forming

Divalent metal ions promote polymer aromatization, enhances graphitic char yield,

but trivalent metal ion is not.

It means MgO can promote the carbonization of polymer, but Al2O3 is not.

So MDH makes FR compound easy pass UL burning test compare to ATH.

2: Better smoke absorbing

Divalent metal ions promote polymer aromatization, enhances graphitic char yield,

converts volatiles to stable char, but trivalent metal ion is not.

It means MgO can reduce the smoke more than Al2O3 during polymer burning.

What is smoke?

Smoke is a colloidal suspension of solid and liquid particulates in a gas (usually air),

resulting from the thermal decomposition of materials under oxygen-deficient conditions

Applications

Cable & Wire Compounds – EVA/POE jackets with V0 performance

Flame Retardant Foams – EVA or POE-based safety foams

Footwear Midsoles – Flexible EVA blends with improved fire resistance

Sheets, Films & Profiles – Smooth finish, non-blooming surfaces

PA66 + PM5S → V0-grade connectors with low smoke

ABS + PM5S → Appliance housings meeting flame/safety codes

PBT + PM5S → Auto electronics with anti-drip and heat resistance

Below are SEM, PSD of PM5S

PM Series

Introduction

MgCl2+2NH3•H2O=Mg(OH)2↓+2NH4Cl

Magnesium hydroxide product are widely used as a flame retardant in the rubber and plastics industries.

Advantages

High purity, high whiteness, low moisture content, high bulk density, gives good mechanical properties, good flame retardant and smoke absorb properties.

A good replacement of hexagonal plate type magnesium hydroxide in some formulas, cost saving solution for normal HFFR compound.

High purity and BET value, also suitable as a reaction raw material for Magnesium derivatives (such as magnesium stearate).

Coating: No coating.

Processing temperature less than 300°C.

Packing: 25kg bag or big bag.

Grade	PM3	PM5	PM10
Mg(OH)2 (%)	≥99	≥99	≥99
CaO (%)	≤0.10	≤0.10	≤0.10
Fe2O3 (%)	≤0.005	≤0.005	≤0.005
Acid Insolubles (%)	≤0.10	≤0.10	≤0.10
Loss on ignition (%)	≥30	≥30	≥30
Whiteness (R457%)	≥99	≥99	≥98
Particle Size D50 (μm)	2.5-3.2	1.4-1.7	35~45
BET (m2/g)	10-14	14-18	/
Moisture (%)	≤0.5	≤0.5	≤0.5
Coating	No coating	No coating	No coating

PM Series “SN” coated

Introduction

MgCl2+2NH3•H2O=Mg(OH)2↓+2NH4Cl

Coated by KMT patent formula, easy dispersing in PP, PE, EVA, POE, EPDM, XLPE, PA, ABS compound.

Advantages

High purity, high whiteness, low moisture content, high bulk density, easy flow, anti-bridge and agglomeration-resistant, easily used in auto-loading and feeding system, low compounding torque, no white spot, good surface quality and no shark skin.

Gives good mechanical properties, good flame retardant and smoke absorb properties.

Good replacement of hexagonal plate type magnesium hydroxide in some formulas, cost saving solution for normal HFFR compound.

Processing temperature less than 300°C.

Packing: 25kg bags or big bag.

Grade	PM5	PM5SN	PM3SN
Mg(OH)2 (%)	≥99	≥99	≥99
CaO (%)	≤0.10	≤0.10	≤0.10
Fe2O3 (%)	≤0.005	≤0.005	≤0.005
Acid Insolubles (%)	≤0.10	≤0.10	≤0.10
Loss on ignition (%)	≥30	≥30	≥30
Whiteness (R457%)	≥99	≥99	≥99
Particle Size D50 (μm)	1.4-1.7	1.4-1.7	2.5-3.2
BET (m2/g)	14-18	14-18	10-14
Moisture (%)	≤0.5	≤0.5	≤0.5
Coating	No coating	KMT patent	KMT patent

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