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Por que a correia transportadora de borracha está envelhecendo?

2025-08-01 09:41

Rubber conveyor belt is a rubber, fiber, metal composite product used to carry and transport materials, or a plastic and fabric composite product. Rubber conveyor belt is widely used in cement, coking, metallurgy, chemical industry, steel and other industries with short conveying distances and small conveying volumes.


There are the following factors that cause the aging of rubber conveyor belt:

1. Oxygen separation is one of the important reasons for the aging of rubber conveyor belt. Oxygen reacts with free radical chains of rubber molecules in the rubber conveyor belt, and the molecular chains are broken or over-crosslinked, causing changes in rubber properties.

2. The chemical activity of ozone is much higher than that of oxygen, and it is very destructive. It also breaks the molecular chain, but the effect of ozone on the rubber conveyor belt is different according to the deformation of the rubber. When used as rubber for deformation, direct cracks due to stress will occur, which is commonly known as ozone cracking.

3. Increasing the temperature may cause thermal cracking or thermal crosslinking of the rubber conveyor belt. But the basic effect of heat is activation. Increase the oxygen diffusion rate and activate the oxidation reaction, thereby accelerating the oxidation reaction rate of rubber. This is a common aging phenomenon, that is, thermal oxygen aging.

4. Light is also a factor affecting the aging of rubber conveyor belt. The shorter the light wave, the greater the energy. What destroys the rubber is the high-energy ultraviolet light. In addition to ultraviolet light can directly cause the fracture and crosslinking of the rubber molecular chain, the rubber absorbs light energy and produces free radicals, which initiates and accelerates the oxidation chain reaction process. Ultraviolet light plays a role in heating. The effect of light mainly occurs on the surface of the rubber conveyor belt. For samples with high glue content, mesh cracks will appear on both sides.

5. Mechanical stress is also one of the important reasons. Under the repeated action of machinery, the rubber molecular chain will crack into dissociation, causing oxidation and even reaction to form force chemistry. In the process of oxidation of mechanically broken molecules, the advantage will be fixed as a result, so the rubber conveyor belt is easy to crack under stress.

6.There are two aspects of the role of moisture. The rubber conveyor belt is easily damaged when it is rained in humid air or soaked in water. This is due to the water-soluble properties of the rubber and the water-soluble particles and other components are extracted and dissolved by water, hydrolyzed or absorbed. Caused. Especially under the alternating action of water immersion and atmospheric exposure, the damage to the rubber conveyor belt will be accelerated. However, under certain circumstances, water content does not damage the rubber, and even has the effect of delaying aging.

7. Other factors that can affect the aging of rubber conveyor belt include chemical media, valence metal ions, high-energy radiation, electricity, and biology.


Rubber conveyor belt


In order to ensure that the quality of products meets the standards, Liaoning Hengyi Rubber Machine Belt Manufacturing Co., Ltd. continuously invests in advanced testing equipment and strictly implements testing procedures. All products we produce have been verified by sophisticated testing equipment, and the performance indicators meet international and industry requirements.

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