Journal of the Society of Materials Science, Japan
Online ISSN : 1880-7488
Print ISSN : 0514-5163
ISSN-L : 0514-5163
Original Papers
Tensile Properties and Viscoelastic Model of a Polyimide Thin Film
Shengde ZHANGSyuhei MORITadashi NAGASAWAKaoru KOBAYASHIMasao SAKANE
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2013 Volume 62 Issue 2 Pages 149-155

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Abstract
This paper presents tensile properties of a new developed polyimide thin film used in electronic devices. Tensile tests were performed to determine Young's modulus, proportional limit, yield stress, ultimate tensile strength and elongation of the polyimide film at three strain rates and three temperatures. Effects of strain rate and temperature on the tensile properties were discussed. There was a little anisotropy of tensile properties caused by injection direction in the polyimide film. Young's modulus, proportional limit, yield stress and ultimate tensile strength increased with increasing the strain rate. Only elongation decreased with the strain rate. Young's modulus, proportional limit, yield stress and ultimate tensile strength decreased with increasing temperature but elongation increased. Applicability of a viscoelastic model for describing the stress-strain curves of the polyimide film was proposed.
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© 2013 by The Society of Materials Science, Japan
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