Effect of Hencky strain on extensional rheology determined from entrance pressure drop measurements
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28110%2F24%3A63580478" target="_blank" >RIV/70883521:28110/24:63580478 - isvavai.cz</a>
Result on the web
—
DOI - Digital Object Identifier
—
Alternative languages
Result language
angličtina
Original language name
Effect of Hencky strain on extensional rheology determined from entrance pressure drop measurements
Original language description
In this work, new die [1] is proposed for the determination of the extensional viscosity at various Hencky strains from entrance pressure drop measurements using a high-pressure capillary rheometer. The new concept makes it possible to change the Hencky strain independently of the Hencky strain rate. The new die consists of an easily replaceable cylindrical chamber to which free-flow orifice die [2-5] is attached. The Hencky strain is controlled by changing the diameter of the cylindrical chamber while keeping the diameter of the free-flow orifice die the same. The new die was used to determine extensional rheology of various polyolefin melts and the results obtained were compared with corresponding data from the Sentmanat extensional rheometer.Acknowledgement: The authors wish to acknowledge the Grant Agency of the Czech Republic (Grant No. 24-11442S) for the financial support and NETZSCH Gerätebau GmbH for providing the Rosand RH10-2 capillary rheometer.References.1. M. Zatloukal, Czech patent 307664 (2018).2. M. Zatloukal, J. Musil, Czech patent 304382 (2014).3. M. Zatloukal, J. Musil, Polymer Testing 28, 843 (2009).4. M. Zatloukal, Polymer, 104, 258 (2016).5. M. Zatloukal, Czech patent 309071 (2021).
Czech name
—
Czech description
—
Classification
Type
O - Miscellaneous
CEP classification
—
OECD FORD branch
10404 - Polymer science
Result continuities
Project
<a href="/en/project/GA24-11442S" target="_blank" >GA24-11442S: Rheology and modeling of polymer melt flows at very high strain rates with respect to the production of meltblown nanofibers</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů