With the development of science and technology, color coatings are widely used in construction, transportation, household appliances and so on. For the long-term construction or storage of color coatings in the sun, aging will occur, which is inevitable.
In order to prevent this phenomenon, what should we do? Below to introduce you about the relevant content of the color scroll, I hope that the following content can be helpful to you.
The necessary condition for the aging or photochemical reaction of the coatings is that the surface components of the coatings can absorb radiation. Secondly, when the radiation energy absorbed by molecules is greater than that absorbed by molecular bonds, the coatings can degrade. Because the shorter the wavelength of light, the higher the energy it contains. The aging of coatings in atmospheric environment is that the coatings molecules absorb the energy of ultraviolet light band higher than their molecular bond energy in sunlight, which leads to the degradation of coatings molecules. With the aging of the coating, the bulk of the base material gradually loses, and the surface of the coating gradually becomes rough and glossy. This loss of the base material will leave more stable pigment particles, which remain on the surface of the coating in the form of unbonded powder, a process called pulverization. The ageing resistance of polyester coated rolls with different coating thickness is quite different. The ageing resistance of thin coated color coated sheets is poor, and that of coatings with normal thickness is relatively good.
Above is about the relevant content of the color scroll, I hope you can pay more attention in the process of using. If you don't know or want to consult, you can contact our staff directly. We will provide you with dedicated service and high quality products.