Effects of Surface Morphology on Space Charge Formation in Low Density Polyethylene

被引：4
|
作者：
Zheng, C. J. [1 ]
Guan, B. [1 ]
Zhao, H. [1 ]
Yang, J. M. [1 ]
Sun, Z. [1 ]
机构：
[1] Harbin Univ Sci & Technol, Key Lab Engn Dielect & Their Applicat, Minist Educ, Harbin 150080, Peoples R China
来源：
IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION | 2016年 / 23卷 / 02期
关键词：
LDPE; morphology; Lamellar; AFM; space charge; mica; ELECTRICAL-CONDUCTION; TRANSPORT; MODEL;
D O I：
10.1109/TDEI.2015.005076
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The effects of a modified surface morphology on space charge formation in low-density polyethylene (LDPE) were investigated with pulsed electro-acoustics. The change in morphology resulting from LDPE crystallization on atomically flat substrates was imaged by atomic force microscopy. An extensive lamellar morphology was observed, which contrasts with the crystal structure formed between PET films. The regular arrangement was confirmed with wide-angle X-ray diffraction. Space charge accumulation was characterized in samples with different surface morphologies. Charge injection occurs in both films, but is much larger in the LDPE-mica films than in the LDPE-PET films, and the difference increases over time. A suppression of current density in the LDPE-mica films was coincident with space charge formation.
引用
收藏
页码：1183 / 1189
页数：7
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