4.6 Article

Improving thermal and mechanical properties of epoxy composites by using functionalized graphene

期刊

RSC ADVANCES
卷 5, 期 74, 页码 60596-60607

出版社

ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ra09410k

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资金

  1. National Natural Science Foundation of China [51303034, 51163004, 51463007]
  2. Natural Science Foundation of Guangxi Province, China [2013GXNSFAA019308, 2014GXNSFDA118006, 2014GXNSFBA118034]
  3. Guangxi Universities Scientific Research Project [YB2014165]
  4. Natural Science Foundation of Ningbo [Y40307DB05]

向作者/读者索取更多资源

Perylene tetracarboxylic anhydride (PTCDA) was reacted with 6-aminocaproic acid to form the corresponding perylene bisimide (PBI). PBI was used as the foundation for oligomerisation of glycidol in a ring-opening reaction of glycidol leading to a hyper branched, water-soluble glycidol derivative of perylene (PBI-HPG). PBI-HPG was bound to the reduced graphene oxide via pi-pi stacking resulting in a compound termed PBI-HPG/RGO. The structure and morphology of PBI-HPG/RGO were investigated by infrared spectroscopy (FT-IR), wide angle X-ray diffractometry (WAXD), transmission electron microscopy (TEM), atomic force microscopy (AFM) and X-ray photoelectron spectroscopy (XPS). PBI-HPG/RGO was blended at different loadings in order to improve the thermal and mechanical properties of epoxy composites. The maximum T-g of the epoxy composites was about 20 degrees C and the decomposition temperature (T-d) was 26 degrees C higher than that of neat epoxy. The incorporation of PBI-HPG/RGO yields a material with an impact strength of 39.6 kJ m(-2) and a tensile strength at 0.7 wt%. It increased by 50.8% and 62.3%, respectively, compared to the neat epoxy.

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