1. Oxygen: Oxygen reacts with the rubber molecules in the rubber by a free radical chain reaction, and the molecular chains of the stainless steel mesh belt are broken or excessively cross-linked, resulting in changes in rubber properties. Oxidation is one of the important causes of rubber aging.
2. The chemical activity of ozone is much higher than that of oxygen, and it is more destructive. It also destroys the molecular chain of the stainless steel mesh belt, but the impact of ozone on the rubber depends on whether it is deformed. When used as deformed rubber (mainly unsaturated rubber), cracks perpendicular to the direction of stress action will appear, so-called "ozone cracks"; when acting on deformed rubber, only an oxide film is formed on the surface without cracking.
3. Heat: An increase in temperature will cause thermal cracking or thermal crosslinking of the rubber. But the basic function of heat is activation. Increase the oxygen diffusion rate, activate the oxidation reaction, thereby accelerating the rubber oxidation reaction rate, which is a common aging phenomenon of thermal oxygen aging.
4. Mechanical stress: In the repeated action of mechanical stress and continuous friction with the idler, the stainless steel mesh belt will destroy the rubber molecular chain to generate free radicals, trigger the oxidation chain reaction, and form a mechanochemical process. Mechanical rupture of molecular chains and mechanical activation of oxidation processes. Which one may have the upper hand depends on the conditions you are in, and can easily cause ozone cracking under stress.