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What cause the cracks on Molded Rubber Products?

2021-06-29

What cause the cracks on Molded Rubber Products?


Aging is the main reason to cause the cracks on molded rubber products.


Aging refers to the gradual deterioration of polymer materials (including rubber, plastics, fibers, etc.) in the process of processing, storage and use due to the combined effects of internal and external factors, resulting in the loss of use value.

The aging of rubber is a common problem of rubber products. The main reason for the development and aging is that the structure or components have weaknesses that easily cause aging, such as unsaturated double bonds, branched chains, carbonyl groups, hydroxyl groups on the ends, etc.; Or environmental factors are mainly sunlight, oxygen, ozone, heat, water, mechanical stress, high-energy radiation, electricity, industrial gas, sea water, salt spray, mold, bacteria, insects, etc.


Measures to prevent aging on Molded Rubber Products:
From the perspective of the cause of aging, one of the main reasons is the polymer structure itself. Therefore, it is important to improve the structure of the polymer to increase the aging ability of molded rubber products. For example, after rubber is vulcanized, there are still unsaturated double bonds, and it is difficult to avoid the erosion of sunlight, oxygen, ozone, etc. when rubber products are used. Therefore, people are researching and synthesizing new varieties to avoid or greatly reduce the polymer chain of rubber.The major feature of the structure that is different from other synthetic rubbers is that the main chain does not contain double bonds and is completely saturated, making it become the most ozone-resistant, chemical-resistant, high-temperature-resistant aging-resistant on molded rubber products.
LJ RUBBER manufacturer has professional technical consultants with more than 30 years experience of molded rubber products , which we can match your requirements on molded rubber products. If you need any assistance on rubber, pls contact us sarah@tec-rubber.com.
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