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The best additives to stabilize plastics against UV
Exposure of plastics to ultraviolet rays over time leads to their destruction. Photodegradation occurs when invisible, short-wavelength ultraviolet radiation breaks polymer chains. This phenomenon leads to a drop in the properties of the piece. Such as reducing impact resistance, changing color, cracking, reducing elongation until tearing and tensile strength and flaking of the surface of the object.
Photodegradation of polymers occurs when UV radiation is absorbed by chemical groups in the polymer, these chemical groups are called chromophores. The part may contain additives such as halogenated flame retardants, fillers or pigments. UV stabilizers are designed and manufactured to prevent photodegradation by adding to the polymer. There are three types of stabilizers, each of which is explained below.
UV absorbers or UV absorbers
Quenchers
HALS amine light stabilizers
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This post is written by MZ140005