ATH

Mineral: ATH

ATH (aluminium tri hydrate, chemical formula Al(OH)3)  is an intermediate product of aluminium production, characterised by: 

• High purity
• High whiteness
• Relatively low density of 2.4g/cm3 compared to other mineral fillers, which are typicallyat 2.7g/cm3
• Medium Mohs hardness of 3
• Decomposition around 180°C, releasing water 

 

Basic properties

Property	Value	Unit
Moisture	< 0.4	[%]
pH	9	[-]
Hardness (Mohs)	3	[-]
Refractive index	1.57	[-]
Electrical conductivity	60	[µS/cm]
L.O.I.	34.5	[%]
Density	2.4	[kg/ dm3]

 

Products: 

Product	Grade	D50 [µm]
Portaflame SG	10S8	3.8
	10 S11	3.8
	30 LV S12	9.5

 

Production locations: Maastricht (NL)

Functionality: Portaflame surface treated products make formulations flame retardant, while improving electrical and mechanical properties. They are more hydrophobic than regular Portaflame SG10, which helps the overall hydrophobicity of the silicone compound. Better hydrophobicity improves the arc-resistance in conditions where there is a lot of dust/dirt in the atmosphere.