Transformer oil based multi-walled carbon nanotube–hexylamine coolant with optimized electrical, thermal and rheological enhancements

Abstract

In a one-pot microwave-assisted method, multi-walled carbon nanotubes (MWNT) are functionalized with hexylamine (HA). Based on FT-IR, TGA-DTG, Raman, EDS, CHNS/O and TEM results, the functionalization of MWNT with HA was confirmed . The effect of microwave-assisted functionalized MWNT with HA charged transformer oil at different concentrations was experimentally investigated for electrical, thermal and rheological properties. According to the breakdown voltage, flash point, density, electrical conductivity, thermal parameters and viscosity results of the synthesized transformer oil-based coolants they could be an appropriate alternative for different transformers operating at a nominal voltage less than 170 kV.