1) Oxygen, oxygen in the rubber adhesive with the rubber molecules occur free radical chain reaction, molecular chain breakage or excessive crosslinking, causing changes in rubber properties. Oxidation is one of the important causes of rubber adhesive aging.
2) ozone, ozone chemical activity is much higher than oxygen, more destructive, it is the same molecular chain breakage, but the role of ozone on the rubber adhesive with the rubber deformation and different.
3) heat: increase the temperature can cause thermal cracking or thermal crosslinking of rubber adhesives. But the basic role of heat or activation. Increase the speed of oxygen diffusion and activation of oxidation reaction, thus accelerating the rubber oxidation reaction rate, which is a widespread aging phenomenon thermal oxygen aging.
4) Light: the shorter the light wave, the greater the energy. The destructive effect on the rubber adhesive is the higher energy of ultraviolet light. In addition to ultraviolet light can directly cause the rubber molecular chain breakage and cross-linking, rubber adhesives due to absorption of light energy and produce free radicals, triggering and accelerating the oxidation chain reaction process.
5) Mechanical stress: under the repeated action of mechanical stress, will make the rubber molecular chain break to generate free radicals, triggering the oxidation chain reaction, the formation of force chemical process. Mechanical breakage of molecular chains and mechanical activation of the oxidation process.
6) Moisture: the role of moisture has two aspects: rubber adhesive in the humid air drenched in rain or immersed in water, easy to destroy, this is due to the rubber in the water-soluble substances and components such as the clear water group is dissolved by water extraction. Hydrolysis or absorption and other causes.
7) Other: the role of the rubber adhesive factors such as chemical media, metal ions, high-energy radiation, electricity and biology.