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Aluminum Hydroxide (ATH)
Aluminum Hydroxide obtained from bauxite by the Bayer process has the chemical formula Al(OH)3 or Al2O3 3H3O, It has very high reactivity to acid and alkali. Since it is stable up to approximately 200℃ and absorbs much of the heat , it is widely used for flame retardants. It is also used in a wide range of industrial application because of its free moisture content and standard particle size
■ Product Data
| (ITEM) | (Product) | (Dp50/㎛) | (Characteristics) | (Use/Application) |
|---|---|---|---|---|
| Wet ATH | WH-50 | 55±10㎛ | High reaction with acid and alkali, High solubility, Free Moisture 10% | Aluminum sulfate, Sodium aluminate Poly aluminum chloride, Zeolite |
| Dry.fine ATH |
DH-50P | 50±10㎛ | High reaction with acid and alkali, High fluidity, Low dust rate | Latex cαnpound，Catalyst ?carrier Flame-retardant filler，Glass?fiber |
| SH-8K | 8±1㎛ | High reaction, High purity, High fluidity, Low viscosity | ||
| SH-15K | 15±3㎛ | |||
| KH-5R | 5±1㎛ | |||
| KH-8R | 8±1㎛ | |||
| KH-17R | 17±3㎛ | |||
| Superfine ATH |
KH-10 | 0.6~0.8㎛ | Highly fine grain, High whiteness Low electrical conductivity | Flame-retardant filler, Pigment Catalyst carrier, Electrical wire coating |
| KH-101 | 0.8~1.2㎛ | Highly fine grain, High whiteness | ||
| KH-101LC | 1.2~1.7㎛ | Highly fine grain, High whiteness Low electrical conductivity | ||
| KH-101LP | 1.7~2.5㎛ | Highly fine grain, High whiteness | ||
| KH-101LCT | 1.2~1.6㎛ | |||
| KH-101HRT | 1.5~2.0㎛ |
- Wet ATH, Dry ATH
Wet ATH is a wet hydrate aluminum with three molecules of crystal water and free moisture. It has a very high reactivity to acid and alkali. DH-65, DH-50P is manufactured by dehydrating free moisture from surface of Wet ATH. Its reactivity and solubility are the same as Wet ATH but its state is dry. So the handling is easier and the mixing with an additive is simpler.
■ Product Data
| (Product) | (Product) | WH-50 | DH-50P |
|---|---|---|---|
| 형태(Form) | Wet Powder | Dry Powder | |
| Chemical Properties |
Al(OH)₃ (%) | MIN 99.6 | MIN 99.0 |
| Na₂O (%) | MAX 0.25 | MAX 0.40 | |
| Fe₂O₃ (%) | MAX 0.015 | MAX 0.012 | |
| SiO₂(%) | MAX 0.02 | MAX 0.010 | |
| Loss on lgnition(%) | 34.5±0.1 | 34.5±0.1 | |
| Leachable Na2O(%) | MAX 0.03 | MAX 0.03 | |
| Physical Properties |
Moisture(%) | MAX 10.0 | MAX 0.3 |
| Dp50(㎛) | 55±10 | 50±10 | |
| Whiteness | MIN 85 | MIN 90 | |
| Solubility to Acid(%) | MIN 85 | - | |
| pH | 9.3±0.3 | 9.5±0.5 | |
* chemical compositions are for dried materials at 105℃, in percent.
- Fine ATH
SH-8K, SH-15K, SH-25B, KH-5R, KH-8R, KH-17R are fine aluminum hydroxide made through an additional process per the customer’s request. They are used for flame retardant fillers because of their low viscosity. Being stable to 200°C, they are applied to flame retardant fillers for latex compounds, PVC, etc. As water molecules are emitted without generating toxic gas and dust, the resistance to electrical arcing and tracking is excellent and they are widely used for electrical insulating materials.
■ Product Data
| (Product Name) | SH-8K | SH-15K | SH-25B | KH-5R | KH-8R | KH-17R | |
|---|---|---|---|---|---|---|---|
| Chemical | Moisture(%) | MAX 0.3 | |||||
| Al(OH)₃ (%) | MIN 99.0 | ||||||
| Na₂O(%) | MAX 0.40 | ||||||
| Fe₂O₃ (%) | MAX 0.012 | ||||||
| SiO₂(%) | MAX 0.010 | ||||||
| Loss on lgnition(%) | 34.5 ± 0.1 | ||||||
| Leachable Na2O(%) | MAX 0.03 | ||||||
| Physical | Dp50(㎛) | 8 ± 1 | 15 ± 3 | 25 ± 3 | 5 ± 1 | 8 ± 1 | 17 ± 3 |
| Whiteness | MIN 90 | ||||||
| DOP oil absorption (㎖/100g) |
30 ± 3 | 25 ± 3 | 19 ± 3 | 32 ± 2 | 22 ± 3 | 20 ± 3 | |
■ Uses, Application
(1) Flame retardant fillers for latex compounds, PVC, Epoxy resin, Unsaturated polyester resin
(2) Paper coating filler
(3) Catalyst carrier
(4) China ceramic glaze
(5) Polyaluminum chloride, Sodium aluminate, Aluminum salt
■ Packaging
(1) Flexible Container Bag(1,000kg)
(2) Paper Bag (20kg, 25kg)
