Zinc oxide is used in the making of coating as pigment, such as primer and antirust paint, the dosage is 30%.
coating Zinc oxide is used in the making of coating as pigment, such as primer and antirust paint, the dosage is 30%.
Properties:
Molecular formula: ZnO Molecular weight : 81.39 white /slight yellow fine powder , specific gravity 5.5-6.5 , granularity 0.15-0.7um ), refractive index is 1.95-2.05 , specific heat in 20 °C 0.0915 ka. /g. °C, melting point 1973 °C, Zinc oxide evaporates in 1000 °C .
Standard: HHXPQB-YHX ( TL )-2005
Technical index :
Item | coating | ||
1 # | 2 # | 3 # | |
Zinc oxide ( ZnO ),% ≥ | 98.0-99.0 | 95.0-97.0 | 90.0-93.0 |
Metallic matter ( Zn ),% ≤ | NA | - | - |
Loss on ignition ,% ≤ | 0.6-0.8 | 1.0-2.0 | — |
Residue on screen( wet 100 mesh ) , % ≤ | 0.3-0.5 | 1.0-1.5 | 2.0-3.0 |
Water soluble salt ,% ≤ | 0.8-1.0 | 1.2-1.5 | 2.0-2.5 |
Valatile matter on 105 °C , % ≤ | 0.4-0.6 | 1.0-1.2 | 1.5-2.0 |
OIl adsorption, g/100g ,% ≤ | 20 | 25 | 35 |
Decolor power (compared with sample ),% ≥ | 95-100 | 90-95 | 85-90 |
Color(compared with sample) | in accordance with sample | ||
Zinc oxide
