Spectral Response Studies on Fresh Mineral Oil Based CCTO Nanofluids

Nanofluids are being considered as a futuristic and replacement to the existing liquid insulation for High voltage power apparatus. Now-a-days, spectral studies are highly preferred for nanofluids to evaluate certain limitations like stability issues and structural changes. For evaluation of the spectral response, Dynamic Light Scattering (DLS) and Fourier Transform Infra-Red (FT-IR) techniques are basically preferred by the researchers globally. The present research work is the continuation of previous work carried in mineral oil-based CCTO nanofluids. The paper deals with the basic evaluation of spectral response in base mineral oil (MO) and MO-based high giant dielectric CaCu3Ti4O12 (CCTO) nanofluids as according to ASTM and ISO standards. The MO based CCTO nanofluid samples are prepared from different volume concentrations like 0.001%, 0.0025%, 0.005%, 0.01% and 0.05%. From the above study, it is seen that the developed high dielectric nanofluids are resulted in moderate stability (i.e., 0.08–0.7) and FTIR results provides the traces of oxidation products (carbonyl group) and moisture content in the tested nanofluids. Further investigation is needed for detailed evaluation of stability, organic and in-organic by-products present in the aged nanofluid samples.