Explanation
The light stabilizer refers to any substance added to inhibit or slow down the degradation of macromolecule materials due to photooxidation, which can shield, reflect or absorb ultraviolet rays and convert them into harmless heat energy, so that the peroxide of degradation product can undergo non free radical decomposition; It can make the excited state of molecules or groups excited by ultraviolet ray recovery to a stable ground state, and eliminate or slow down the possibility of photooxidation and reduction reaction; passivation metal ions: It can effectively capture the free radicals triggered by ultraviolet light, so as to prevent macromolecule materials from being damaged by ultraviolet light according to the stability mechanism.
Classification
Organic polymer materials -> Polymer additives -> Additives