Analysis of the Performance Characteristics of ZnO Nanoparticles’ Dispersed Polyester Oil

Table 1

Experimental data for thermal conductivity of NPDP.

S.No	Temperature (°C)	Concentration (%)	Sonication time (min)	Unmilled	Ball milled	Differences
				Thermal conductivity (W/mK)	Thermal conductivity (W/mK)	Thermal conductivity (W/mK)
1	40	0.1	30	0.143	0.163	0.020
2	40	0.3	45	0.158	0.174	0.016
3	40	0.5	60	0.160	0.177	0.017
4	50	0.1	45	0.151	0.170	0.019
5	50	0.3	60	0.166	0.182	0.016
6	50	0.5	30	0.170	0.187	0.017
7	60	0.1	60	0.172	0.190	0.018
8	60	0.3	30	0.190	0.210	0.020
9	60	0.5	45	0.194	0.213	0.019

From the results of thermal conductivity of unmilled and ball-milled NPDP, it increased with the concentration of the nanoparticles and temperature. The thermal conductivity of ball-milled NPDP is higher than that of unmilled NPDP.