|
|||||
|
|
Dielectric characteristics of polyimide CP2 |
|
| Authors: | J. David Jacobs Mike J. Arlen David H. Wang Zoubeida Ounaies Loon-Seng Tan Richard A. Vaia |
| Affiliation: | a Air Force Research Laboratory, Materials and Manufacturing Directorate, Nanostructured and Biological Materials Branch, Wright-Patterson AFB, OH 45433, USA b Universal Technology Corporation, 1270 North Fairfield Rd., Dayton, OH 45432, USA c Department of Polymers Science and Engineering, University of Akron, Akron, OH 44325, USA d Now with: Luna Innovations, 1 Riverside Circle, Suite 400, Roanoke, VA 24016, USA e University of Dayton Research Institute, 300 College Park, Dayton, OH 45469, USA f Department of Aerospace Engineering, Texas A&M University, College Station, TX 77843, USA g Department of Electrical Engineering, University of Cincinnati, Cincinnati, OH 45221, USA |
| Abstract: | High-performance aerospace-grade polyimides such as CP2 fulfill many important roles in a wide range of applications. A thorough understanding of the polymer matrix’s physiochemical properties is an important consideration when developing polymer nanocomposite materials. In this work, we report the dielectric properties of polyimide CP2 including the primary and two secondary dipole relaxations, and their thermal characteristics by way of temperature variable impedance spectroscopy (10−2 to 106 Hz, −40 to 225 °C). Special emphasis has been placed on detailing the characteristic phenomena near CP2′s glass transition (199 °C). The consequences of residual DMAc solvent on CP2′s overall loss and relaxation characteristics are also discussed. |
| Keywords: | Impedance spectroscopy Polyimide Dielectric properties |
| 本文献已被 ScienceDirect 等数据库收录！ | |