Reasons for aging of color coated coils

The prerequisite for color coated coil aging or photochemical reaction is that the surface composition of the color coated coil ring can absorb radiation, and when the molecular structure absorbs more radiation than the molecular structure bonding energy, the coating can be dissolved because the less wavelengths of the light source, the more kinetic energy it contains. The brittleness of color coated coils in air pollution is the kinetic energy in the ultraviolet band of natural light, which is higher than the molecular structure bonding energy. As the polyurethane coating ages, the substrate itself becomes progressively absent, and the surface of the coating becomes progressively smoother and loses light. This loss of substrate leaves a more stable color paste of objects which are left in a non-adhesive powder form to the surface layer of the polyurethane coating, a process known as delamination. The aging resistance of thin-coated polyester steel coils varies greatly, and thin-coated color coated sheets are less resistant to aging.

The above is about the causes of color coated coil aging, any product only in accordance with the correct operating methods, in order to achieve good results, to avoid problems leading to unnecessary trouble, if you do not understand, you can call to consult.

With the development of industry now, the color coated coil you should have been very familiar with, because of its characteristics are widely used, in order to equipment for better application, the following let's understand the color coated coil aging what are the reasons for it.

Color coated coil aging or photochemical reaction of the prerequisite is the surface composition of the color coated coil circle can absorb radiation, when the molecular structure of the radiation absorbed by the molecular structure is greater than the molecular structure of the bonding energy, the coating can be dissolved, because the less the wavelength of the light source, the more the kinetic energy contained. The brittleness of color coated coils in air pollution is the kinetic energy in the ultraviolet band of natural light, which is higher than the molecular structure bonding energy. As the polyurethane coating ages, the substrate itself becomes progressively absent, and the surface of the coating becomes progressively smoother and loses light. This loss of substrate leaves a more stable color paste of objects which are left in a non-adhesive powder form to the surface layer of the polyurethane coating, a process known as delamination. The aging resistance of thin-coated polyester steel coils varies greatly, with thin-coated color panels being less resistant to aging.