How to improve the aging resistance of rubber?
Whether it is rubber, rubber or rubber particles have a certain life, want to extend the service life of rubber and related products, we must first understand what factors affect the aging speed of rubber products, the four main factors affecting the aging of rubber particles for oxygen, ozone, heat and light.Oxygen oxidation by the rubber molecules of free radical chain reaction, molecular chain fracture or excessive crosslinking, cause the rubber properties changes.
The shorter the light wave, the greater the energy, the greater the damage to the rubber. Ultraviolet not only directly caused the breakage and crosslinking rubber, rubber surface is also resillage guttacontent especially high rubber is more obvious this is the light splitting outer rubber particles (black rubber particles and colored rubber particles).
In the course of oxidation, ozone can produce molecular cracks, but also make the deformed rubber crack in the direction of stress, namely ozone cracking".Heat will increase the temperature, thermal cracking or thermal crosslinking of rubber will accelerate the oxidation rate of the rubber, that is, heat aging.
