Rubber products crack causes

Rubber products are everywhere in our lives, whether it is vehicles, machinery, electronic equipment or daily necessities, rubber products are inseparable. However, in the process of use, rubber products may have cracks, which not only affects the appearance, but also may lead to a decline in performance and even loss of use value. So, what are the causes of cracks in rubber products?

First, the main causes of rubber products cracks

1. Material reasons

The crack problem of rubber products is largely related to the quality and properties of the material. If the quality of rubber raw materials is not up to standard, such as sulfur content, nitrogen content, ash and other components of vulcanized rubber are not qualified, it may lead to cracks in the product during use. In addition, if the quality of auxiliary materials such as filling materials and reinforcing materials used in rubber products is not up to standard, it will also lead to insufficient strength of the products, and then cracks.

2. Mold reasons

The mold is the key equipment for the production of rubber products. If the design of the mold is unreasonable or the production quality is not up to standard, it may lead to the stress concentration of rubber products during the molding process, which will lead to cracks in the product during use. In addition, mold wear and damage can also lead to cracks on the surface of rubber products.

3. Production process reasons

The production process of rubber products has a great influence on the quality of rubber products. If the vulcanization temperature, vulcanization time, pressure and other process parameters are not properly controlled, it may lead to insufficient strength of rubber products, hardness is not moderate, and then lead to cracks. In addition, if improper operation in the production process, such as excessive stretching, excessive folding, etc., will also lead to cracks in rubber products.

4. Use environmental reasons

The use environment of rubber products has a great impact on its life and performance. If the use of the environment is too harsh, such as high temperature, low temperature, oil, acid and alkali and other corrosive environment, may accelerate the aging of rubber products, resulting in cracks.

Second, rubber products crack response measures

1. Choose high-quality raw materials

In order to produce high-quality rubber products, high-quality raw materials must be selected. In the purchase of rubber raw materials, we should pay attention to its sulfur content, nitrogen content, ash and other key indicators to ensure the quality of raw materials. At the same time, auxiliary materials such as filling materials and reinforcement materials should also be strictly checked.

2. Optimize mold design

The mold is the key to the production of rubber products. The mold design should be optimized to avoid sharp corners and edges on the surface of the mold that lead to stress concentration and reduce the risk of cracking during the molding process. At the same time, pay attention to regular inspection and maintenance of the mold to ensure the accuracy and quality of the mold.

3. Strictly control the production process

In the production of rubber products, it is necessary to strictly control the vulcanization temperature, vulcanization time, pressure and other process parameters to ensure that the product has sufficient strength and hardness. At the same time, it is necessary to strengthen the operation specifications in the production process to avoid over-stretching, over-folding and other operations that may lead to cracks.

4. Improve the aging resistance of rubber products

In view of the influence of the use environment on rubber products, anti-aging agents, antioxidants, anti-ultraviolet agents and other additives can be added to improve the aging resistance of rubber products and extend their service life.

In short, there are many reasons for cracks in rubber products, and to solve this problem, it is necessary to analyze and improve from many aspects such as raw materials, molds, production processes and use environment. Only in this way can we effectively reduce the risk of cracks in rubber products and ensure the quality and service life of products.