Why do batch colors need to be protected from ultraviolet light?

Many people are wondering whether batch colors need to be protected from UV. The answer is absolutely yes. And to find out the reason, let us read this article of EuP till the end of this essay and remember that: batch colors always need to be protected from UV rays.

What happens if the batch colors do not have UV protection additives? 

During the production of batch colors without the anti UV additives, it will be some phenomenons like the breaking of the chemical bonds in the polymer, it also reduce photochemistry, change color and reduce the physical properties of polymers. 

An anti UV additives can limit and prevent the degeneration agents on the surface, it also in  internal components of batch colors. Anti - UV additive as a protective film that helps to absorb UV rays, prolong shelf life and optical properties (anti-yellowing, color change).

How are batch colors damaged by ultraviolet light?

First of all, batch colors will absorb wave energy (in which UV waves are the strongest). This process will lead to the accumulation of heat and gradually become a high temperature to make molecules move back and reach a maximum peak. It also will appear small grooves (due to broken links and self-formed in different free radicals) and continue to cause polymer structure decomposition. Next, they will attract oxygen molecules to increase their decomposition activity.

Nowadays, manufactures in the world are using some common UV - anti additives such as:

• UV Absorber: The substance absorbs UV wave energy to convert into harmless thermal energy

• Quenchers: They can prevent the bond cleavage and ultimately release the free radicals. It is usually used in agricultural film production.

• Free radical scavengers: Key to free radical activity …