High mobility of carbon nanotubes into thermosetting matrix

作者：Prolongo S G^*; Jimenez Suarez A; Del Rosario G; Urena A

来源：European Polymer Journal, 2016, 74: 209-217.

DOI：10.1016/j.eurpolymj.2015.11.029

• Carbon nanotubes
• Epoxy resin
• Electrical properties
• Magnetic field
• Orientation
• Mobility

A new manufacturing process based on applying weak magnetic field during the curing treatment is reported in order to induce a selective mobility and alignment of the carbon nanotubes on epoxy resins. Depending on experimental conditions, this procedure allows manufacturing different materials: (a) anisotropic composites with aligned carbon nanotubes and (b) composites with selected nanoreinforced areas and neat epoxy areas. Different composites have been manufactured, such as dielectric materials with insulating inside and electrically doped surfaces, or doped composites with insulating ring.
The procedure basically consists on the anchorage of magnetite nanoparticles in the surface of carbon nanotubes and the application of magnetic field during the curing treatment. The mobility of nanofillers can be directly observed through the appearance of black and transparent areas on the composites, while the alignment of carbon nanotubes is analyzed by scanning electron microscopy of high resolution. The anisotropy and different behavior of selected areas for the manufactured composites have been determined by electrical measurements.

• 出版日期2016-1