Engineering Mechanics

Proceedings Vol. 13 (2007)

ENGINEERING MECHANICS 2007

NATIONAL CONFERENCE WITH INTERNATIONAL PARTICIPATION
May 14 – 17, 2007, Svratka, Czech Republic

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Editors: Igor Zolotarev

ISBN 978-80-87012-06-2 (printed)
ISSN 1805-8248 (printed)
ISSN 1805-8256 (electronic)

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RHEOLOGICAL CHARACTERISATION OF LDPE MATERIALS BY MEANS OF DIFFERENTIAL CONSTITUTIVE EQUATIONS

Pivokonský R., Zatloukal M., Filip P.
pages 227 - +10p., full text

For rheological description of branched LDPE melts (Escorene LD165BW1 a Bralen RB0323) the following differential constitutive equations were used: eXtended Pom-Pom, Phan Thien-Tanner-XPP, and modified Leonov models. There was carried out quantitative and qualitative comparison of efficiency of the predictions determined by these models with the experimental data measured at 200oC. For both materials there were measured linear viscoelastic properties, shear and uniaxial extensional viscosities.

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Engineering Mechanics

International Conference

Proceedings Vol. 13 (2007)

ENGINEERING MECHANICS 2007