Causes of aging of rubber timing belt

May 10, 2024

Our rubber timing belt have: trapezoidal teeth timing belt, arc teeth timing belt, which are widely used.

However, during the processing, storage and use of rubber and its products, due to the comprehensive influence of internal and external factors, the physical and chemical properties and mechanical properties of rubber The performance gradually deteriorates until it loses its use value. This change is called rubber aging. The surface may appear cracked, sticky, hardened, softened, powdered, discolored, moldy, etc.

Factors causing rubber aging include:

1. Oxidation is one of the important causes of rubber aging.

2. Ozone and ozone's chemically active oxygen are much higher and more destructive. It also breaks the molecular chain, but the effect of ozone on rubber varies depending on whether the rubber is deformed or not.

3. Heat: Increasing the temperature can cause thermal cracking or thermal cross-linking of rubber. Thereby accelerating the rubber oxidation reaction rate. This is a common aging phenomenon - thermal oxygen aging.

4. Light: The shorter the light wave, the greater the energy. It is ultraviolet rays with higher energy that cause damage to rubber.

5. Mechanical stress: Under the repeated action of mechanical stress, the rubber molecular chain will break to generate free water, triggering an oxidative chain reaction and forming a mechanochemical process.

6. Others: Factors that affect rubber include chemical media, variable-price metal ions, high-energy radiation, electricity and biology, etc.

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Author:

Ms. Bella Ma

이메일:

bella@hengtagroup.com

Phone/WhatsApp:

+8617731169773