C under 10 MPa

These results relate to a few grades only and cannot be generalized. 

The dynamic fatigue can be good for certain grades if care is taken to limit the strains by restricting the stresses to values in keeping with the modulus. 

PPE is moderately UV-sensitive but must be protected by addition of anti-UV and other protective agents. Generally, black grades are more resistant than natural ones. 

PPE absorbs little water and isn t very sensitive to it, even at boiling temperature. 

Suitable grades are usable in contact with food. 

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Figure 4.85. (c) Neat PPE creep examples of creep modulus (GPa) after lOOOh versus temperature (°C) under 10.5 MPa... 

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