Do you know the necessity of color Coated coil coating thickness?

Color Coated coil is likely to age if it is used for too long or not used for a long time. Why? Long-term construction or storage will definitely expose it to the sun.Aging will occur after a long time of light exposure, which we can not avoid, but we can prevent in advance to reduce the aging rate, so what should we do?

The first necessary condition for aging or photochemical reaction of color coated coil is that its surface components can absorb radiant energy.Secondly, the degradation of Color Coated coil can only occur when the molecular absorption radiation energy is greater than the molecular bond energy.The shorter the wavelength of the light, the higher the energy it contains.

According to the above theory, the aging of Color Coated coil in atmospheric environment is caused by the degradation of the coating molecules due to their absorption of the uv wavelength of sunlight which is higher than the molecular bond energy.With the aging of the film, the base material is gradually lost, and the surface of the coating becomes rough and loses light.This loss of base material eventually leaves more stable pigment particles, which remain on the surface of the film as unbonded powders, a process known as pulverization.

In conclusion, the aging resistance of color coated coil with different thickness is significantly different. The aging resistance of the thin coating color coated coil is relatively poor, while the aging resistance of the coating with normal thickness is relatively good.

Therefore, it is not feasible to reduce the production cost of color coated coil by means of thin coating, which will inevitably lead to serious quality problems. At the same time, the necessity of coating thickness is clearly indicated in the order contract of foreign importers of color coated coil.

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