PCTFE examples of flexural modulus retention versus temperature C

When amorphous, PCTFE can be clear. For example, for a given film of 0.025 mm thickness, transmittance is about 95%. Refractive indices are roughly 1.43. 

These results relate to some grades only and cannot be generalized. 

The mechanical properties at room temperature are generally fair with a rather low modulus and a fair impact strength, but performances decrease when the temperature rises. 

Alterations by moisture exposure are very weak but shrinkage and coefficients of thermal expansion are rather high creep moduli are low. 

Poisson s ratio depends on numerous parameters concerning the grade used and its processing, the temperature, the possible reinforcements, the direction of testing with regard to 

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Figure 4.92. PCTFE examples of flexural modulus retention (%) versus temperature (°C)...

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