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High performance polymer composites on PEEK reinforced with aluminum oxide
Author(s) -
Goyal R. K.,
Negi Y. S.,
Tiwari A. N.
Publication year - 2006
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.23083
Subject(s) - peek , materials science , crystallinity , thermogravimetric analysis , differential scanning calorimetry , composite material , thermal stability , crystallization , scanning electron microscope , nucleation , polymer , chemical engineering , chemistry , physics , organic chemistry , engineering , thermodynamics
A study on high performance poly(ether‐ether‐ketone) (PEEK) composites prepared by incorporating aluminum oxide (Al 2 O 3 ), 0 to 50 wt % by hot compaction at 15 MPa and 350°C was described. Density, thermogravimetric analysis/differential scanning calorimetry, and scanning electron microscopy (SEM) were employed to evaluate their density, thermal stability, crystallinity, and morphology. Experimental density was found higher than theoretical density, which indicates that composite samples are sound. It was found that the addition of micron sized (< 15 μm) Al 2 O 3 increased the peak crystallization temperature by 12°C when compared with neat PEEK with insignificant increase in melting temperature. Half‐time of crystallization is reduced from 2.05 min for the neat PEEK to 1.08 min for PEEK incorporated with 30 wt % Al 2 O 3 because of the strong nucleation effect of Al 2 O 3 . The thermal stability of composites in air atmosphere was increased by 26°C. However, thermal stability in nitrogen atmosphere decreases at lower concentration of Al 2 O 3 but increases above 20 wt % of Al 2 O 3 . Uniform dispersion of Al 2 O 3 particles was observed in PEEK polymer matrix by SEM. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 100: 4623–4631, 2006