Tensile yield in phenolphthalein polyether ketone

✍ Scribed by Yanchun Han; Yuming Yang; Binyao Li; Zhiliu Feng

• Publisher: John Wiley and Sons
• Year: 1994
• Tongue: English
• Weight: 324 KB
• Volume: 54
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/app.1994.070541306

✦ Synopsis

Uniaxial tension tests to the yield point were performed on phenolphthalein polyether ketone (PEK-C) from room temperature to near the glass transition temperature (T,) at a constant rate of 0.02 min-'. At room temperature, some measurements were also made at strain rates from 0.002 min-' to 2 min-'. Yield stress was a linear function of temperature and log strain rate. The temperature and the strain rate dependence of yield stress could be modeled using Eyring theory. Yield energy was found to be a linear function of temperature. Young's modulus, yield strain, elastic strain, and plastic strain all decreased with temperature.