Electrical properties of chemically modified polyethylenes

Kwang S. Suh, Chang Ryong Lee, Yutao Zhu, Jangseob Lim

Research output: Contribution to journalArticlepeer-review

35 Citations (Scopus)


This report describes electrical properties such as space charge distribution, water treeing characteristics and ac breakdown strength in PE (polyethylene) modified by grafting and blending techniques. A control PE shows heterocharge. In AA (acrylic acid)-grafted PE (LDPE-g-AA), the heterocharge observed in PE decreases at low AA contents and homocharge is observed at high AA contents. In NBA (n-butyl acrylate)-grafted PE (LDPE-g-NBA), on the other hand, this heterocharge gets larger at all graft ratios to 0.12%. However, these components decrease the water tree length measured under specific conditions and increase ac breakdown strength. Details of the results are described and their origins are discussed. The results obtained with the LDPE-g-NBA are compared with those of PE/ethylene NBA copolymer blends.

Original languageEnglish
Pages (from-to)681-687
Number of pages7
JournalIEEE Transactions on Dielectrics and Electrical Insulation
Issue number6
Publication statusPublished - 1997

Bibliographical note

Funding Information:
This work was supported in part by Korea Electric Power Research Institute, Taejon, Korea.

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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