期刊
RSC ADVANCES
卷 7, 期 56, 页码 35265-35273出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7ra06205b
关键词
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资金
- EPSRC [EP/N034627/1]
- EPSRC [EP/N034627/1, EP/M507295/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/N034627/1, EP/M507295/1] Funding Source: researchfish
Unique high performance thermoplastic PEEK ternary nanocomposites reinforced by nano graphitic carbon coated IF-WS2 (inorganic fullerene-like tungsten disulphide) have been prepared and their structures have been characterised by electron microscopy imaging, electron dispersive spectrum elemental and X-ray diffraction scanning. The IF-WS2@C-PEEK composites exhibit impressive improvements in both their mechanical and thermal properties, with an extraordinary 54% enhancement in the ultimate tensile strength at 2 wt% and a nearly 235% increase in thermal conductivity at 8 wt%. In addition, they also show an increase in decomposition temperature (over 50 degrees C) with higher IF-WS2@C contents. Further investigation reveals the activation energies estimated by the Kissinger method to be 61 and 97 kJ mol(-1) for neat PEEK and IF-WS2@C-PEEK, respectively. This is ascribed to the enhanced dispersion ability and better interface bonding between the PEEK matrix and IF-WS2@C nanoparticles, which for the first time has been investigated by FTIR and XPS analysis. These significantly improved properties will no doubt expand the applications of the PEEK-based nanocomposites.
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