| 학회 |
한국화학공학회 |
| 학술대회 |
2019년 봄 (04/24 ~ 04/26, 제주국제컨벤션센터) |
| 권호 |
25권 1호, p.833 |
| 발표분야 |
재료(Materials) |
| 제목 |
LDPE/GNP Insulating Nanocomposites for Effective Reduction of Space Charge Accumulation in HVDC Cables |
| 초록 |
We have demonstrated a straightforward hydrophobic surface modification of graphene nanoplatelets (GNPs) through a defect-healing process to fabricate well-dispersed insulating low-density polyethylene (LDPE)/GNP nanocomposites, and have confirmed their effective suppression of space-charge accumulation. Without any organic modifiers, GNPs containing oxygen-based functional groups at the edges were successfully reduced at optimal high-temperature defect-healing condition, and modified to have hydrophobic surface properties similar to those of the LDPE matrix. The degree of dispersion and the reproducibility of the mechanically melt-mixed LDPE/GNP nanocomposites were immediately analyzed by thickness-normalized optical absorption measurement. In the LDPE matrix, below the percolation threshold concentration, well-dispersed GNP fillers effectively acted as trapping sites under high electric fields, resulting in the successful suppression of packet-like space-charge accumulation (field enhancement factor = 1.04 @ 0.1 wt% LDPE/GNP nanocomposite). |
| 저자 |
박지선1, 김영선1, 박다슬1, 남진호2, 김윤진1
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| 소속 |
1전자부품(연), 2LS전선 |
| 키워드 |
재료 |
| E-Mail |
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| 원문파일 |
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