Preparation and electrical properties analysis of waterborne epoxy resin carbon nanotube composite materials Online publication date: Fri, 05-Jan-2024
by Yan Sun; Xinjian Zhang; Li Niu
International Journal of Microstructure and Materials Properties (IJMMP), Vol. 17, No. 1, 2024
Abstract: Using multi-walled carbon nanotubes and waterborne epoxy resin as raw materials, a waterborne epoxy resin carbon nanotube composite material specimen was prepared. The effects of the amount of multi-walled carbon nanotubes and montmorillonite, as well as shear time, on the electrical properties of the composite material were analysed. The conductivity and dielectric loss is analysed through a broadband dielectric impedance spectrometer. Then, a high resistance meter is used to test surface and volume resistivity. Finally, the mechanical and electrical performance is analysed through a universal testing machine combined with the four electrode method. The experimental results show that extending the stirring time can reduce the surface resistivity of composite materials and improve their conductivity; increasing the amount of multi-walled carbon nanotubes can reduce surface resistivity; increasing the amount of montmorillonite appropriately can improve the dielectric constant of the material.
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