Jian-kui GAO, Yi-jie LI, Qin-nan ZHANG, Bing-wei LIU, Jing-bo LIU, Dong-xiong LING, Run-hua LI, Dong-shan WEI. Temperature Effects on the Terahertz Spectral Characteristics of PEEK[J]. Spectroscopy and Spectral Analysis, 2021, 41(11): 3347
- Spectroscopy and Spectral Analysis
- Vol. 41, Issue 11, 3347 (2021)
Fig. 1. Structural formula of PEEK
Fig. 2. Schematic diagram of TAS7500SU Terahertz spectrometer
Fig. 3. Absorption coefficient of PEEK at room temperature (25 ℃)
Fig. 4. (a) Absorption coefficients of PEEK at 30~300 ℃ with a temperature interval of 10 ℃;(b) Variations of THz absorption coefficient at 1.0, 1.5, 2.0, 2.5 THz and the characteristic frequency with temperature
Fig. 5. (a) The variation trend of PEEK’s permittivity with frequency at 25, 50, 100, 150, 200 and 300 ℃; (b) The trend diagram of PEEK’s permittivity changing with temperature at 1.0, 1.5, 2.0 and 2.5 THz
Fig. 6. Variations of the tangent of PEEK dielectric loss angle at 1.0, 1.5, 2.0, 2.5 THz with temperature
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