Application of powder coatings
The largest growth areas of our powder coating market are: Marine industry and pipeline industry. The existing problem is that impact resistance and hygroscopicity need to be improved and improved. Researchers mainly focus on the modification of various base materials. There is still a gap between the domestic pipeline anticorrosive epoxy powder coating and the foreign products in the aspects of storage stability and coating construction.
Due to the development of foreign automotive powder coating technology, automotive coating, wood and plastic coatings are the most dynamic potential markets. The automotive industry will be a major consumer, with good growth in the powder coating market in Greece, Turkey and Eastern Europe. The Asia Pacific region has greater potential and is already considered to be the fastest growing region in the world.
Epoxy resins have a secondary hydroxyl group and an epoxy group, and the secondary hydroxyl group can react with isocyanate. Epoxy resin as a polyol is directly added into the component containing the hydroxyl group of polyurethane adhesive. In this method, only the hydroxyl group takes part in the reaction, while the epoxy group does not react.
At present, the classification of epoxy resins has not been unified. Generally, they are classified according to strength, heat resistance grade and characteristics. There are 16 main varieties of epoxy resins. Including general adhesive, structural adhesive, high temperature resistant adhesive, low temperature resistant adhesive, water and wet surface adhesive, conductive adhesive, optical adhesive, spot welding adhesive, epoxy resin film, foam adhesive, strain adhesive, soft material bonding adhesive, sealant, special adhesive, latent curing adhesive, civil construction adhesive 16 kinds.