Rheological behavior of polypropylene blends utilized in foaming process

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28110%2F10%3A63509513" target="_blank" >RIV/70883521:28110/10:63509513 - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Rheological behavior of polypropylene blends utilized in foaming process

Popis výsledku v původním jazyce

Morphological structure of polypropylene foams represented by the size of the bubbles and bubbles density is significantly affected by rheological properties of the source materials. Various blends of high molecular weight and high melt strength polypropylenes were prepared in a twin screw extruder, and subsequently 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. In addition, pressure dependent shear flow behavior of the tested materials was determined using 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 been demonstrated 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,

Název v anglickém jazyce

Rheological behavior of polypropylene blends utilized in foaming process

Popis výsledku anglicky

Morphological structure of polypropylene foams represented by the size of the bubbles and bubbles density is significantly affected by rheological properties of the source materials. Various blends of high molecular weight and high melt strength polypropylenes were prepared in a twin screw extruder, and subsequently 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. In addition, pressure dependent shear flow behavior of the tested materials was determined using 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 been demonstrated 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,

Druh

D - Stať ve sborníku

CEP obor

CD - Makromolekulární chemie

OECD FORD obor

—

Projekt

<a href="/cs/project/2A-1TP1%2F126" target="_blank" >2A-1TP1/126: Inovace zdravotnických pomůcek na polymerní bázi (Fakulta technologická ve Zlíně).</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2010

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Latest Trends on Engineering Mechanics, Structures, Engineering Geology

ISBN

978-960-474-203-5

ISSN

—

e-ISSN

—

Počet stran výsledku

4

Strana od-do

—

Název nakladatele

WSEAS Press

Místo vydání

Corfu Island

Místo konání akce

Corfu Island, Greece

Datum konání akce

1. 1. 2010

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

—