Why Does Rubber Discolor After Aging?

The aging and discoloration of rubber are caused by the discoloration of articles exposed to natural, ultraviolet rays, heat, oxygen, stress, chemical attack, moisture, etc., and improper production processes. The influence of the rubber structure itself, the existence of bond energy between the rubber macromolecular chains will make the rubber yellow, and the discoloration is also related to the additives added in the application materials, the presence of moisture, impurities, and the processing and production technology.

In the process of processing, storage, and use of rubber and its products, due to the comprehensive action of internal and external factors, the physical and chemical properties and mechanical properties of the rubber gradually deteriorate and become yellow, until the final loss of use-value. In fact, this phenomenon is rubber aging.

In our daily life, there are many external factors that can cause the rubber to turn yellow when we use it, including a series of external conditions such as oxygen, ozone, heat, light, mechanical stress, and moisture. The existence of these factors may cause Make the rubber to yellow. Their mechanism of action is mainly to break the molecular chain of the rubber, thereby causing the surface of the rubber to turn yellow, crack, stick, and harden.

Flexible Rubber Bellows

Flexible Rubber Bellows are mainly used for the need for a very small bending radius non-concentric axial transmission or occasions which is not so convenient to connect pipes or equipment with fixed elbows. This bellow is very soft in Shore A 40. It can be easy to be blended.

There are lots of kinds of bellows, such as flame retardant high-temperature type, low-temperature type, oil resistance, acid and alkali resistance, corrosion resistance, tensile resistance type.