Epoxy resins are widely used in coatings thanks to their excellent adhesion to materials and their durability. However, epoxy resins typically contain aromatic groups with strong absorption in the UV range. This makes epoxy structures vulnerable to UV degradation. The performance of one company’s stabilizers in a typical commercial epoxy resin with hardeners are tested and reviewed in this article.
Formulations are sometimes adjusted by fine-tuning various additives, including antioxidants and light stabilizers, which provide different thermal and light stabilization properties. It is very important to find the best combination of additives to achieve the necessary performance, especially if the final substrate or area to be powder coated requires specific durability or heat resistance.
Formulations are sometimes adjusted by fine tuning various additives, including antioxidants and light stabilizers, which provide different thermal and light stabilization properties. It is very important to find the best combination of additives to achieve the necessary performance, especially if the final substrate or area to be powder coated requires specific durability or heat resistance.
The new water-based additives and stabilization packages are designed to combine the efficiency of conventional products with the benefits of water miscibility and low to zero volatile organic compound (VOC) generation, as well as easy dosing and handling.
The demand for durability as well as for water-miscible products and those that generate little or no VOC has resulted in the launch of a hindered amine light stabilizer (HALS), offered initially to customers in Europe and introduced this year in Asia.
