Title :
Electrical properties of biodegradable polylactic acid film
Author :
Nakagawa, Takashi ; Nakiri, Takuo ; Hosoya, Ryuichi ; Tajitsu, Yoshiro
Author_Institution :
Kansai Electr. Power Co. Inc., Amagasaki, Japan
Abstract :
We measured the basic electrical insulation characteristic of biodegradable polylactic acid (PLA), and the following results were obtained. The volume resistivity, dielectric constant, and dielectric loss tangent measured at room temperature were almost the same as those of crosslinked polyethylene (XLPE) currently used as insulating material for cables and electric wires. The mean impulse breakdown strength of PLA was about 1.3 times that of XLPE. Also, space charge accumulation in PLA and XLPE was measured. The amount of space charge accumulation in PLA was one-half that in XLPE when a DC voltage was applied for a short time.
Keywords :
XLPE insulation; dielectric losses; limited space charge accumulation; permittivity; polymer films; power cable insulation; space charge; XLPE; biodegradable polyactic acid film; cables; crosslinked polyethylene; dielectric constant; dielectric loss tangent; electric insulation; electric wires; mean impulse breakdown strength; space charge accumulation; volume resistivity; Biodegradable materials; Current measurement; Dielectric constant; Dielectric loss measurement; Dielectric measurements; Dielectrics and electrical insulation; Electric variables measurement; Programmable logic arrays; Space charge; Temperature measurement; Biodegradable polymer; PLA; electrical insulation characteristics; film; polylactic acid;
Journal_Title :
Industry Applications, IEEE Transactions on
DOI :
10.1109/TIA.2004.830751
