Rheological behaviour of polypropylene blends utilized in foaming process

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985874%3A_____%2F10%3A00361355" target="_blank" >RIV/67985874:_____/10:00361355 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Rheological behaviour of polypropylene blends utilized in foaming process
Original language description
Morphological structure of PP foams represented by the size of the bubbles and bubbles density is affected by rheological properties of the source materials. Various blends of high molecular weight and high melt strength PP were prepared in a twin screwextruder, and foamed. Their shear flow behavior as well as strain hardening during elongation were found to be the factors of a key importance in foaming process optimization. Pressure dependent shear flow behavior of the tested materials was determinedusing capillary rheometer modified with backpressure chamber, and obtained dependencies of shear viscosity on pressure conditions were analyzed in order to further tailor blend compositions regarding their following use in foaming processes. It has beendemonstrated that foam morphology might be controlled not only through degree of bubble coalescence and nucleation rate by the help of optimizing of material components ratio, but also via setting the proper processing conditions.
Czech name
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Czech description
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Publication year
2010
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Latest Trends on Engineering Mechanics, Structures, Engineering Geology
ISBN
978-960-474-203-5
ISSN
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e-ISSN
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Number of pages
4
Pages from-to
275-278
Publisher name
WSEAS
Place of publication
Athens
Event location
Corfu
Event date
Jul 22, 2010
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000288686900053

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