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Effect of Temperature and Deformation Rate on the Tensile Mechanical Properties of Polyimide FilmsIn order to study the structure-property relationships of different processed oriented polyimide films, the mechanical properties will be identified by using tensile tester Instron 4505 and structural information such as the 3-dimensional birefringence molecular symmetry axis and 3-dimensional refractive indices will be determined by using wave guide coupling techniques. The monoaxial drawing techniques utilized in this research are very useful for improving the tensile mechanical properties of aromatic polyimide films. In order to obtain high modulus/high strength polyimide films the following two techniques have been employed, cold drawing in which polyimide films are drawn at room temperature at different cross head speeds and hot drawing in which polyimide films are drawn at different temperatures and cross head speeds. In the hot drawing process the polyimide films are drawn at different temperatures until the glass transition temperature (Tg) is reached by using the environmental chamber. All of the mechanical and optical property parameters will be identified for each sample processed by both cold and hot drawing techniques.
Document ID
19960047697
Acquisition Source
Langley Research Center
Document Type
Abstract
Authors
Moghazy, Samir F.
(Clark-Atlanta Univ. GA United States)
McNair, Kevin C.
(Clark-Atlanta Univ. GA United States)
Date Acquired
August 17, 2013
Publication Date
March 1, 1996
Publication Information
Publication: Proceedings of the 4th Annual Workshop: Advances in Smart Materials for Aerospace Applications
Subject Category
Nonmetallic Materials
Accession Number
96N33307
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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