Thermal coefficients of Earth fuller reinforced with nano-oxide particles

Abstract

Abstract The present work deals with the study of thermal coefficients of Earth fuller based nanocomposites (EFBNC) with the change in the mass fraction of nano-oxide particles (Al2O3, TiO2) in EF at different temperatures. Thermal Constants Analyser (TPS 2200) has been used to measure thermal conductivity, thermal diffusivity, and specific heat capacity simultaneously of the prepared EFBNC at varying temperatures ranging from 10 °C to 60 °C in steps of 10 at 2 wt%, 4 wt%, 6 wt%, and 8 wt%. Percentage increment in thermal conductivity of EFBNC with TiO2 was observed approximately 16% and 13% at 30 °C and 60 °C with the increase in the mass fraction of nanoparticles from 2 wt% to 8 wt%. On the other hand, at the same temperature and concentration, a decrement in thermal conductivity of EFBNC with Al2O3 was noticed approximately 8% and 3%. The decrement in thermal diffusivity of EFBNC with TiO2 was found approximately 23% at 30 °C and 11% at 60 °C when concentration increases from 2 wt% to 8 wt% and with Al2O3 was approximately 11% and 13% respectively at the same temperature and concentration. Percentage increment in the specific heat of EFBNC with TiO2 and Al2O3 was observed approximately 38% and 9% at 30 °C and 26% and 17% at 60 °C with increment in the mass fraction of nanoparticles from 2 wt% to 8 wt% in EF.