Space charge and conduction in LDPE-polypropylene copolymer blends

Zhang, C.; Mizutani, Teruyoshi; Kaneko, K.; Mori, Toshiyuki; Ishioka, M.

doi:10.1109/ceidp.2001.963481

Cited by 2 publications

(1 citation statement)

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“…In the previous papers [11,12], the effects of blend of EP with LDPE on electrical breakdown were reported; the impulse breakdown strength of LDPE in the high-temperature region was improved by blending with EP. We also investigated the effects of blend of EP on the space charge behaviours of LDPE during the application of a high DC voltage by the pulsed electro-acoustic (PEA) method [13,14], and pointed out the increase of accumulated space charge and the decrease of the mobility of charges by blending. These results suggest the modification of carrier traps by blending EP.…”

Section: Introductionmentioning

confidence: 99%

Decay of space charge in LDPE and its blend polymer

Zhang¹,

Mizutani²,

Kaneko³

et al. 2002

J. Phys. D: Appl. Phys.

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In this paper, the decay characteristics of space charge under the short circuit for low-density polyethylene (LDPE) and blend polymer of LDPE and polypropylene copolymer were investigated by the pulsed electro-acoustic method. The decay processes for both, LDPE and the blend polymer, have two time constants which suggest the existence of two kinds of traps. The activation energy was estimated from the relationship between decay time constant and temperature. Two activation energies corresponding to the two time constants increase by blending polypropylene copolymer with LDPE. It suggests the deepening of trap depth by blending which is consistent with the previous work.

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Section: Introductionmentioning

confidence: 99%