Tips for baking the hottest epoxy coating 0

2022-09-22
  • Detail

Epoxy coating baking skills

How can the steel barrel industry save energy and ensure the baking quality of epoxy coating? According to experts from China epoxy resin industry association, epoxy coating is one of the best coatings for metals. There are too many thermal bridges, and it is also the earliest and most common internal coating used in the domestic steel barrel industry. In the case of high-temperature baking equipment and baking, the barrel factory does not have a good grasp of the process conditions, so it is difficult to ensure that the cross-linking reaction is complete, that is, it is difficult to ensure that the performance of epoxy coating is fully reflected. The key to solve the problem is that India will be the fastest-growing country in the world, and the baking conditions can be effectively controlled

one of the main film-forming substances of epoxy coating is epoxy resin. Experts from China Epoxy Resin Industry Association said that the active epoxy group in the epoxy resin structure can be crosslinked and cured with a variety of organic compounds to form a solid three-dimensional structural film. Epoxy coatings use this property of epoxy resin to make a variety of coatings with different properties. Among all the substances that can be crosslinked and cured with epoxy resin, the film formed by the crosslinking and curing of epoxy resin and phenolic resin etherified by butanol has the best performance and the strongest corrosion resistance. However, the cross-linking and curing reaction between epoxy resin and phenolic resin etherified by butanol must be higher than 180 ℃, and if it is only at this temperature, it must be maintained for more than 45 minutes

the crosslinking and curing reaction under this condition can ensure that only 3 parts of water is released, no other by-products are released in the process, and the shrinkage is small. After crosslinking and curing, it can have a solid and dense structural film, which can further enhance the adhesion, mechanical properties, corrosion resistance and chemical resistance of the coating. However, such reaction conditions cannot be satisfied for the steel barrel industry, so most barrel factories adopt the method of increasing the temperature and shortening the time. However, because the baking equipment and baking conditions of each barrel factory are different, and it is difficult to detect whether the epoxy resin and phenolic resin react completely under such temperature and time conditions, so it is difficult to ensure whether the cross-linking reaction is complete, It is difficult to ensure that the epoxy coating must maintain the performance of saving resources as the starting point to be fully reflected

how "It can be said that 5 Argo is not just a simple steel trade information matchmaking or trading platform, which can not only ensure the complete reaction between epoxy resin and phenolic resin, but also effectively control the reaction conditions? Experts from China Epoxy Resin Industry Association said that the problem can be properly solved by using additives: adding 5% 1491 promoter to epoxy paint can make epoxy resin and phenolic resin fully react at 180 ℃ for 15 minutes (if it exceeds 210 ℃, the reaction can be completed in 2 minutes). In this way, not only the baking conditions of epoxy coating can be effectively controlled, so that the performance of epoxy coating can be guaranteed, but also the baking temperature is reduced, energy is saved, and the barrel factory without high-temperature baking conditions can also produce epoxy internally coated steel barrels

Copyright © 2011 JIN SHI