Use of Anti-Oxidant Masterbatch

Antioxidants

Polymers will change over time when exposed to radiation, excessive heat, environmental factor and/or oxidation. These changes can have a dramatic effect on the service life and properties of the polymer.

Antioxidants (or polymer stabilizers) are additives used in polymers manufacturing, such as plastics and rubbers, with the intent to inhibit or retard their degradation, by prolonging the life of a lubricant material used by increasing the oxidative resistance of the base oil.

What happens during oxidation of greasing oil?

Oxidation lead to degrade the polymer at a chemical level, via chain reaction, uncontrolled recombination and cross-linking, which adversely affects many key properties such as strength, appearance and color.



Antioxidants allow that through the following mechanisms:

Enable lubricants to flow and work at higher temperatures. Usually, synthetic lubricants, especially those that are hydrocarbon-based, are susceptible to degradation by oxygen. This is initiated by the formation of reactive free radicals and peroxides and result in oil thickening and the formation of sludge and varnish in many applications.
Destructive oxidation of an oil is a cyclical process involving initiation, propagation, branching and termination.
Antioxidants help break the cycle by slowing the degradation of the very reactive radicals.
Oxidation will continue to occur until the oil is no longer usable.
Secondary antioxidants react here with reactive peroxides that are present to break the oxidation cycle.