Principle: Powder coatings will experience aging, yellowing, and other phenomena after being baked at high temperatures or exposed to sunlight, which seriously affects the appearance and performance of the product. To prevent or reduce this trend, it is usually achieved by adding antioxidants or heat stabilizers. Although there are many factors that affect the aging of coatings, such as the quality and type of resins, pigments, additives, formulation design of coatings, production processes, temperature, atmosphere, humidity, and other natural factors, the application of suitable additives does indeed reduce the occurrence of this trend.