Analysis of Chemical-Physical Properties and Breakdown Voltage of Rubber Seed Oil

Monoesters for transformer insulating liquid

“…These values are comparable to that in [13]. However, our results are much less than those reported in [14], [15]. The increase in temperature, the decrease in vacuum pressure, and additional time in operating the vacuum rotary evaporator might help further reduce the water content of the oils.…”

“…It also accommodates other low viscosity oils such as blended tri-ester and monoester, whose viscosity is higher than the oil solely contained monoesters. The measurement results are in the range of 2.62 cSt − 5.78 cSt, comparable to those in [13], [14], and lower than those reported in [12], [15]. The much lower viscosity of monoesters is beneficial for better cooling efficiency [22].…”

“…The breakdown voltages of treated samples are in the range of 36.1 kV to 41.8 kV. These results are slightly higher than those in [15] but less than those reported in [12]- [14]. However, the breakdown voltage of all treated samples in the current investigation fulfills the value specified by the standard [19].…”

“…The viscosity of monoester is much less than the tri-ester, which helps solve the viscosity problem mentioned previously. The vegetable oil in the tri-ester structure is transformed into the monoester through a transesterification process [12]- [15]. This process results in the viscosity of rubber seed and jatrova curcas methyl esters to 30.1 cSt and 10.45 cSt, respectively [12], [15].…”

“…The vegetable oil in the tri-ester structure is transformed into the monoester through a transesterification process [12]- [15]. This process results in the viscosity of rubber seed and jatrova curcas methyl esters to 30.1 cSt and 10.45 cSt, respectively [12], [15]. The viscosity of methyl ester from palm oil can even achieve a value as low as 2.73 cSt [13], [14].…”