ZICOLLUM™ Environmentally-friendly Chromium-free Zinc & Aluminum Coating, as what it is named, is composed of zinc and aluminum.Water-based and solvent-based systems are provided for different purposes. The invention of ZICOLLUM™was ignited by the basic structure of zinc rich primer,being composed of epoxy resin and zinc flakes.Itsthick coating may affect the functional ability of work pieces, such as screws.Based on this limitation, Winstar R&D team made improvements on the zinc rich primerby applying nano technology into the mechanism.Instead of using epoxy resin, zinc and aluminum flakes are mixedwith aspecial film formation material. This highly decreases the thickness of the coating.With the application of nano sealers,the density of coatingcan be increased, following by the increase of corrosion resistance ability.
The substrates coated with 6-8µm thickness of ZICOLLUM™can easily pass 240-2000 hours of NSS test. With water-based system, 20µm of coating thickness can pass 14,400 hours of NSS test. The results could be much better if more layers were applied.
Environmental protection is the main development trend these years. This system is low VOC emission in compliance with REACH and RoHS international standards, being potentially applied in automotives, navy vessels, railway transportation and renewable energy industries etc.
ZICOLLUM™ is popular in China and overseas markets. It has also gained two prizes in 2018 Hong Kong Awards For Industries recently. For more details, please contact Winstar Chemicals.