Creep properties of polyoxymethylene

Thread starter dental guy
Start date May 28, 2008
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Creep Properties

In summary, polyoxymethylene (POM) is a highly crystalline and strong thermoplastic material commonly used in various industries for its mechanical properties. POM's creep properties refer to its ability to resist deformation under a constant load, but it can still experience creep under high temperatures and stress levels. Temperature, stress level, humidity, and chemicals can affect POM's creep properties, and they can be improved through techniques such as adding fillers, increasing crystallinity, or using stabilizers.

May 28, 2008

dental guy

Hepl needed,
Can anybody help me to explain creep in polyoxymethylene, its urgent!

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May 29, 2008

FredGarvin

Science Advisor

That's a toughie. You would be best served to try to contact DuPont directly to get some technical assistance. I have had good luck in the past doing this. Of course, the larger the company, the tougher it is to get to the right person.

May 30, 2008

dental guy

thx a lot

1. What is polyoxymethylene?

Polyoxymethylene (POM) is a type of engineering plastic that is also known as acetal or polyacetal. It is a highly crystalline and strong thermoplastic material that is commonly used in various industries for its excellent mechanical properties.

2. What are the creep properties of POM?

The creep properties of POM refer to its ability to deform or change shape under a constant load over time. POM exhibits a low creep rate, meaning it can resist deformation for long periods of time under a constant load. However, like most plastics, POM can still experience creep under high temperatures and stress levels.

3. How does temperature affect the creep properties of POM?

Temperature plays a significant role in the creep behavior of POM. As the temperature increases, the creep rate of POM also increases. This is because at higher temperatures, the molecular chains of POM have more energy and can move more easily, leading to increased deformation. Therefore, it is important to consider the operating temperature when using POM in applications where creep resistance is critical.

4. What factors can affect the creep properties of POM?

Apart from temperature, other factors that can affect the creep properties of POM include stress level, humidity, and the presence of chemicals. Higher stress levels and exposure to certain chemicals can accelerate the creep rate of POM, while humidity can reduce its strength and stiffness, making it more prone to creep deformation.

5. How can the creep properties of POM be improved?

The creep properties of POM can be improved by using various techniques such as adding reinforcing fillers, increasing the crystallinity of the material, or incorporating stabilizers. These methods can help to reduce the movement of molecular chains and increase the strength and stiffness of POM, making it more resistant to creep deformation.