Electrical treeing properties of polyethylene degassed and impregnated with SF6

Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review

Authors

  • H. K. Xie
  • M. Vester
  • Ernst Gockenbach
  • Manfred Beyer

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Details

Original languageEnglish
Title of host publicationProc 3 Int Conf Prop Appl Dielectr Mater
Pages105-108
Number of pages4
Publication statusPublished - 1992
Event3rd International Conference on Properties and Applications of Dielectric Materials - Tokyo, Jpn
Duration: 8 Jul 1991 → 12 Jul 1991

Abstract

The electrical treeing properties of low-density polyethylene (LDPE) degassed and SF6-impregnated have been studied for a needle-plane configuration. The experimental results show that the electrical treeing properties of LDPE can be improved by impregnating with SF6, depending on the impregnating pressure and duration, i.e., the amount of SF6 dissolved in LDPE, and improved more remarkably by degassing in a vacuum of 10-6 bar for 170 h. Degassed and then SF6-impregnated LDPE gives the best electrical treeing properties. On the basis of the results obtained, a model for tree inception and propagation of polyethylene in a divergent field is proposed which suggests that the tree initiation is due to the breakage of bonds of the polyethylene chain by injected high-energy charge carriers and the rapid reaction between energy-enriched singlet oxygen and polyethylene. Therefore, reducing the action of injected high energy electrons by impregnating with SF6 and decreasing the concentration of oxygen in polyethylene can inhibit the initiation and the propagation of trees. The model is consistent with all the experimental results.

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Cite this

Electrical treeing properties of polyethylene degassed and impregnated with SF6. / Xie, H. K.; Vester, M.; Gockenbach, Ernst et al.
Proc 3 Int Conf Prop Appl Dielectr Mater. 1992. p. 105-108.

Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review

Xie, HK, Vester, M, Gockenbach, E & Beyer , M 1992, Electrical treeing properties of polyethylene degassed and impregnated with SF6. in Proc 3 Int Conf Prop Appl Dielectr Mater. pp. 105-108, 3rd International Conference on Properties and Applications of Dielectric Materials, Tokyo, Jpn, 8 Jul 1991. https://doi.org/10.1109/ICPADM.1991.172017
Xie, H. K., Vester, M., Gockenbach, E., & Beyer , M. (1992). Electrical treeing properties of polyethylene degassed and impregnated with SF6. In Proc 3 Int Conf Prop Appl Dielectr Mater (pp. 105-108) https://doi.org/10.1109/ICPADM.1991.172017
Xie HK, Vester M, Gockenbach E, Beyer M. Electrical treeing properties of polyethylene degassed and impregnated with SF6. In Proc 3 Int Conf Prop Appl Dielectr Mater. 1992. p. 105-108 doi: 10.1109/ICPADM.1991.172017
Xie, H. K. ; Vester, M. ; Gockenbach, Ernst et al. / Electrical treeing properties of polyethylene degassed and impregnated with SF6. Proc 3 Int Conf Prop Appl Dielectr Mater. 1992. pp. 105-108
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AU - Vester, M.

AU - Gockenbach, Ernst

AU - Beyer , Manfred

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N2 - The electrical treeing properties of low-density polyethylene (LDPE) degassed and SF6-impregnated have been studied for a needle-plane configuration. The experimental results show that the electrical treeing properties of LDPE can be improved by impregnating with SF6, depending on the impregnating pressure and duration, i.e., the amount of SF6 dissolved in LDPE, and improved more remarkably by degassing in a vacuum of 10-6 bar for 170 h. Degassed and then SF6-impregnated LDPE gives the best electrical treeing properties. On the basis of the results obtained, a model for tree inception and propagation of polyethylene in a divergent field is proposed which suggests that the tree initiation is due to the breakage of bonds of the polyethylene chain by injected high-energy charge carriers and the rapid reaction between energy-enriched singlet oxygen and polyethylene. Therefore, reducing the action of injected high energy electrons by impregnating with SF6 and decreasing the concentration of oxygen in polyethylene can inhibit the initiation and the propagation of trees. The model is consistent with all the experimental results.

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