What aging phenomena will occur in tire rubber after long-term use?

After long-term use, tire rubber will exhibit various aging phenomena, mainly due to changes in the molecular structure of tire rubber and a decrease in physical properties. The following is a detailed summary of the phenomenon of tire rubber aging:

1、 Surface hardening and reduced elasticity

Phenomenon description: After long-term use, the surface of tire rubber will gradually harden, losing its original softness and elasticity.

Reason: The polymer chains in tire rubber may crosslink or break during long-term use, leading to changes in molecular structure and subsequently affecting their physical properties.

2、 Cracks and fissures

Phenomenon description: Small cracks may appear on the surface of tire rubber, even forming crack like patterns.

Reason: Cracks and fissures are usually caused by external forces, environmental factors (such as sunlight, rain, temperature, etc.), and internal stress on tire rubber during long-term use.

3、 Wear and deformation

Phenomenon description: Tire rubber will gradually wear out and even deform during use.

Reason: Wear is caused by the friction between tire rubber and the ground or other objects. Deformation is caused by changes in the shape and size of the tire rubber under long-term stress.

4、 Decreased airtightness

Phenomenon description: The aging of tire rubber can lead to a decrease in tire tightness, resulting in air leakage.

Reason: The hardening and cracking of tire rubber can lead to a decrease in its sealing performance, making it easy for gas to leak out from inside the tire.

5、 Color change and oxidation

Phenomenon description: After long-term use, the color of tire rubber may change, such as turning yellow, black, etc.

Reason: Color changes are usually caused by oxidation reactions between tire rubber and oxygen in the air. Oxidation reactions can damage the molecular structure of tire rubber, leading to a decrease in its performance.

6、 Internal structural damage

Phenomenon description: The internal structure of tire rubber may be damaged, such as bulging, bubbles, and other phenomena.

Reason: Internal structural damage is usually caused by defects in the manufacturing process of the tire or external impact during use. These damages will reduce the strength and durability of the tire.

In summary, tire rubber will experience various aging phenomena after long-term use, which will affect the performance and service life of the tire. Therefore, it is necessary to regularly check the condition of the tires and replace aged tire rubber in a timely manner during use to ensure driving safety.