White Powder Corrosion Pigment Silica Dioxide for Auto-Motive Coatings
Product Description
SKYSIL® AC-20 silica is suggested for use primarily in coatings applied to galvanized steel and related substrates such as zinc alloy coated steels where the zinc alloy contains low amounts of aluminum or magnesium. Recommended application areas include coil coating primers, general industrial primers and primers for auto- motive coatings. SKYSIL® AC-20 silica is also suitable for use in single layer coatings applied over metal sub- strates and in the so-called primer-pretreatment coatings.
Technical Data Specification
| Items | Specifications |
| SiO2 Content (based on Ignited Substance, %) | 99 |
| Porosity (ml/g)≥ | 0.2-0.3 |
| Oil Absorption (DBP, g/100g) | 80-120 |
| Particle Size Laser diffraction, d50(μm) | 3.0-3.5 |
| Loss on drying (105℃ %≤) | <5 |
| Loss on Ignition (1000℃%≤) | <5 |
| Whiteness %≥ | 93 |
| PH Value (5% in water) | 5.5-7.5 |
| Conductivity (5% in water, us/cm) | <100 |
| Specific Surface Area (m2/g) | 300-400 |
Formulators Guidelines
Solvent Based
| | Performance |
| Short oil alkyd | |
| Medium oil alkyd | |
| Long oil alkyd | |
| 2K epoxy | √ |
| High solid epoxy | |
| Epoxy ester | |
| PU | √ |
Water Based
| Water reducible alkyd | |
| Alkyd emulsion | |
| Epoxy ester | |
| 2K epoxy | √ |
| Acrylics/modififi ed acrylics | √ |
Specialty coatings
| Wash primer | |
| Coil coating | |
| Epoxy ester | √ √ √ |
| Powder | √ |
