Is Polycarbonate the Best Material for Durable CD Cases?

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In summary, polycarbonate fracture toughness is the ability of a polycarbonate material to resist cracking or breaking under stress or impact. It is typically measured using standard testing methods and can be affected by factors such as molecular structure, processing conditions, and environmental factors. Polycarbonate fracture toughness is important in applications where impact resistance is crucial and can be improved through techniques such as copolymerization, blending, and adding fillers or reinforcing fibers.
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LockyPhysics
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Polycarbonate fracture toughness?

I am doing a project in which I have to make a cd case out of a material which is transparent, has a young's modulus not too different to polystyrene, can't cost more than twice polystyrene and has a fracture toughness better than polystyrene!

Polycarbonate looks good so far but I can't find the fracture toughness of it anywhere.

Please Help...
It's due tomorrow!

Thanks!
 
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  • #2


Polycarbonate is highly resistant to fracture, which is why I always recommended it for kids' lenses. You can find shatter-resistance information if you look around.
 

FAQ: Is Polycarbonate the Best Material for Durable CD Cases?

What is polycarbonate fracture toughness?

Polycarbonate fracture toughness refers to the ability of a polycarbonate material to resist cracking or breaking under stress or impact. It is a measure of the material's durability and strength.

How is polycarbonate fracture toughness measured?

Polycarbonate fracture toughness is typically measured using standard testing methods, such as the Izod or Charpy impact tests. These tests involve subjecting the material to controlled amounts of stress or impact and measuring the amount of force required to cause a fracture.

What factors affect the fracture toughness of polycarbonate?

The fracture toughness of polycarbonate can be affected by various factors, including the molecular structure of the material, its processing conditions, and any additives or fillers used in its production. Additionally, environmental factors such as temperature and humidity can also impact the fracture toughness of polycarbonate.

Why is polycarbonate fracture toughness important?

Polycarbonate is often used in applications where impact resistance is crucial, such as in safety glasses, bulletproof windows, and automotive components. Therefore, understanding and testing the fracture toughness of polycarbonate is essential in ensuring the safety and reliability of these products.

How can the fracture toughness of polycarbonate be improved?

To improve the fracture toughness of polycarbonate, manufacturers can use techniques such as copolymerization, blending with other materials, or changing processing conditions to modify the molecular structure and enhance the material's strength and durability. Additionally, adding fillers or reinforcing fibers can also increase the fracture toughness of polycarbonate.

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