The recoil of rigid PVC
 A. M. Zdilar,
 Prof. R. I. Tanner
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Polyvinyl chloride (PVC) is widely used in industry, but it is difficult to find any extensive discussion of theological relations that describe it. The present paper discusses the behaviour of rigid PVC in extensional deformations at various temperatures. In the tests, a step elongation was applied at an initial time, then after a delay the specimen was cut, permitting recoil. Both linear and nonlinear strain regimes were studied; the linear relaxation properties (relaxation function, storage modulus) were crosschecked with eccentricdisk measurements. In the nonlinear strain regime a singleintegral constitutive equation of the KBKZ Wagner type was used. Separability of time and strain effects was demonstrated in our tests and so a “damping function” could be found which was only a function of strain. Video recordings of recoil were made, and detailed predictions of the straintime behaviour were checked against experiments.
Various constitutive equation proposals were used in the comparison, and the separated kernel integral irreversible model performed reasonably well; some other models of a differential type, and a DoiEdwards model were not as accurate.
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 Title
 The recoil of rigid PVC
 Journal

Rheologica Acta
Volume 31, Issue 1 , pp 4454
 Cover Date
 19920101
 DOI
 10.1007/BF00396466
 Print ISSN
 00354511
 Online ISSN
 14351528
 Publisher
 SteinkopffVerlag
 Additional Links
 Topics
 Keywords

 Rigid polyvinyl chloride (PVC)
 constitutive equations
 recoil
 Industry Sectors
 Authors

 A. M. Zdilar ^{(1)}
 Prof. R. I. Tanner ^{(1)}
 Author Affiliations

 1. Department of Mechanical Engineering, University of Sydney, Sydney, Australia