Page 5

17-0169_ECKART_BR_STAPA_Zinc_GB_v5_WEB_1

Corrosion protection with STAPA® Zinc pastes and STANDART® Zinc flake powders ECKART is a leading international manufacturer of metallic and pearlescent pigments for the paints and coatings industry, the graphic arts industry, the plastic, lightweight concrete and the cosmetic industry. In the paint industry one of the most important corrosion protection applications are anti-corrosive coatings, wherein lamellar Zinc powders and pastes are used as functional pigments. The anticorrosive properties of zinc have been well-known for decades; thousands of tons of Zinc dust are yearly used to protect goods and constructions everywhere in the world. Zinc flake pigments Typ/Type Alloy composition % Non volatile content (pigment) acc. to DIN 55923 ± 2% % Volatile content (solvents) acc. to DIN 55923 ± 2% % Type of solvents * Bulk density (typical value) appr. (kg/l) Screen analysis/ wet sieving with organic solvents as rinsing liquid acc. to DIN 53196 <45 μm min. % Typical characteristics of particle size distribution determined with Cilas 1064 D50 approx. μm STANDART® Zinc – Powders Zinc flake TV Zn: 100** 100 - - 1.4 97.0 @ <71 μm 50 Zinc flake AT Zn: 100** 100 - - 1.0 97.0 20 Zinc flake GTT Zn: 100** 100 - - 0.8 98.0 13 Zinc flake UFB Zn: 100** 100 - - 1.4 97.0 5 STAPA® Zinc – Pastes Zinc 4 Zn: 100** 90 10 TE - 97.0 14 Zinc 8 Zn: 100** 90 10 TE - 99.0 11 STAPA® Zinc – Alloys 4 ZnAl3 Zn: 97, Al: 3 91.5 8.5 TE - 97.0 14 4 ZnAl7 Zn: 93, Al: 7 91.5 8.5 TE - 97.0 14 4 ZnSn15 Zn: 85, Sn: 15 91.5 8.5 TE - 97.0 14 4 ZnSn30 Zn: 70, Sn: 30 91.5 8.5 TE - 97.0 14 15 ZnMg26 Zn: 74, Mg: 26 85.0 15.0 TE - 99.0 15 * TE = Mineral spirit, other solvents available on request ** Zinc is 99,995% pure The development of Zinc flakes began back in the 70s, initiated by the desire for anti-corrosive pigments for thin films which offer good corrosion protection under mechanical loads. For a producer of diverse lamellar metalpigments like ECKART it was obvious to manufacture also lamellar (flake-shaped) Zinc pigments to fulfill these requests. Actually the main application field for Zinc flakes is still the coating of mass goods in a special dip coating process. With the zinc pastes and zinc powder portfolio, ECKART offers solutionsto meet the requirements of high-quality products with outstanding corrosion protective properties.


17-0169_ECKART_BR_STAPA_Zinc_GB_v5_WEB_1
To see the actual publication please follow the link above