Effects of carbon nanotube functionalization on the mechanical and thermal properties of epoxy composites
作者： Kai Yang , Mingyuan Gu , Yiping Guo , Xifeng Pan , Guohong Mu
DOI: 10.1016/J.CARBON.2009.02.029
关键词:
摘要: Abstract Chemically functionalized multi-walled carbon nanotube (MWCNT)/bisphenol-A glycidol ether epoxy resin/2-ethyl-4-methylimidazole composites were prepared. MWCNTs first treated by a 3:1 (v/v) mixture of concentrated H2SO4/HNO3, and then triethylenetetramine (TETA) grafting was carried out. X-ray photoelectron spectroscopy analysis proved the effectiveness H2SO4/HNO3 treatment confirmed TETA functionalization mechanism. Chemical decreases crystalline content MWCNTs, however, it did not greatly disrupt their structure. Transmission electron microscopy showed that there thin layer on MWCNT surface, which contributes to homogenous dispersion in matrix improvement MWCNT–epoxy interfacial interaction. Thus impact strength, bending strength thermal conductivity are enhanced.
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