Assessment of polymer matrices for composite cores in overhead conductors

E. J. Bosze, A. Alawar, O. Bretschger, Yun I. Tsai, S. R. Nutt

Research output: Contribution to journalConference articlepeer-review


Recently, a new overhead conductor design was introduced that is supported by a composite core of longitudinal glass and carbon fibers embedded in a polymer matrix produced by pultrusion. Overhead conductors are expected to operate between 100° and 170°C, with short excursions to as high as 200°C. Two composite cores were produced and tested to assess performance at projected operating temperatures by measurement of mechanical properties. The composite cores were produced using developmental epoxy formulations with Tg's (glass transition temperatures) of 176°C and 202°C, respectively. The tensile strength of the two prototype composites exhibited different temperature dependencies. The high-Tg composite retained full strength to 170°C, while the low-Tg composite retained full strength only to 80°C. The fiber-matrix adhesion was the major factor affecting strength retention at high temperatures.

Original languageEnglish
Pages (from-to)3121-3128
Number of pages8
JournalInternational SAMPE Symposium and Exhibition (Proceedings)
Publication statusPublished - 2005
Event50th International SAMPE Symposium and Exhibition - Long Beach, CA, United States
Duration: May 1 2005May 5 2005

ASJC Scopus subject areas

  • General Materials Science
  • Mechanics of Materials
  • Mechanical Engineering


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