Product Features
- Aluminium hydroxide has strong flame retardancy: When heated and decomposed, it releases moisture, absorbs heat, inhibits the combustion of cable, and reduces the speed of flame spread.
- Aluminium hydroxide has Low smoke density: Less smoke is produced during combustion, reducing the harm of smoke to personnel and equipment in a fire, and meeting cable safety standards.
- Aluminium hydroxide has excellent insulation: Chemical stable, it does not affect the electrical insulation performance of the cable, ensuring the safety of power transmission.
- Aluminium hydroxide has Good compatibility: It has strong adhesion with commonly used polymer materials for cables (such as polyethylene and polyvinyl chloride), and is not prone to delamination or precipitation during processing.
Core Role
Flame retardancy and smoke suppression: By decomposing and absorbing heat and diluting flammable gases, it inhibits combustion from the source and is a key additive in the flame retardant system of cables.
- Enhance mechanical properties: After filling, aluminium hydroxide can improve the tensile and impact strength of the cable material, enhancing the durability of the product.
Application Scenarios
Aluminium hydroxide is mainly used in the insulation and sheath materials of power cables, communication cables and control cables, and is especially suitable for scenarios with high fire protection requirements such as high-rise buildings, subways and mines.
Comparative Advantages
Compared with other flame retardants (such as halogen-based flame retardants), aluminium hydroxide is non-toxic and highly environmentally friendly. It does not release harmful gases when burning, meeting the green and environmental protection requirements of modern cable materials.
Technical Index
Chemical Formula: Al(OH)3
CAS NO. 21645-51-2
EINECS: 244-492-7
General Properties
|
molecular weight |
78 |
Mohs hardness |
3 |
|
Density g/cm3 |
2.4 |
Ratio of refraction |
1.58 |
Physical and Chemical Properties
|
Model Item |
ATHX-1 |
ATH-3 |
|
Al(OH)3 [%] ≥ |
99.5 |
99.5 |
|
Al2O3 [%] ≥ |
64.5 |
64.5 |
|
SiO2 [%] ≤ |
0.02 |
0.02 |
|
Fe2O3 [%] ≤ |
0.01 |
0.01 |
|
Na2O [%] ≤ |
0.30 |
0.30 |
|
L.O.I ≤ |
35 |
35 |
|
Attached water ≤ |
0.4 |
0.4 |
|
+325 mesh 325≤ |
0.01 |
0.01 |
|
oil absorption ≈ |
32 |
32 |
|
Mean particle diamete(D50) µ m ≈ |
2.5 |
3.5 |
|
Whiteness [R457] ≥ |
95 |
95 |
|
PH value ≈ |
9 |
9 |
Particle size: 1-5μm (Customizable according to customer requirements)
Packing: We normally pack the goods by pp bag, kraft bag or ton bag ( 25kg, 50kg or 1mt) and we also can pack the goods according to customers' requirements.
Usage Suggestions
Recommended addition amount
30%-60% of the total mass of the cable material. The specific amount should be adjusted according to the flame retardant grade.
Processing technology
Aluminium hydroxide can be mixed with polymer substrates through extrusion, molding and other processes. It is recommended to use a coupling agent to improve dispersion.
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