| Budget Amount *help |
¥13,130,000 (Direct Cost: ¥10,100,000、Indirect Cost: ¥3,030,000)
Fiscal Year 2012: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2011: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2010: ¥6,890,000 (Direct Cost: ¥5,300,000、Indirect Cost: ¥1,590,000)
|
|---|
| Research Abstract |
To understand the space charge formationand the breakdownof low-density polyethylene (LDPE) / nano-sized magnesium oxide(MgO) nanocomposite materials, the breakdown strength,the space charge distribution and conduction current influenced by DC prestress were investigated. DC breakdown strength (Fb) of LDPE decreased with increase of DC prestress. This is probablybecause the bulk of LDPE became more conductive condition by the generation of a packet like chargeduring the prestress. On the other hand, DC-Fb of LDPE/MgO nanocomoposite increased with increase of DC pre-stress field.It was suggested that the conduction current controlled by the space charge near the electrodesdue to charge trapping of MgO nanofiller closely relatedto the breakdown.
|
