Tensile Properties of the Beta-Nucleated Polypropylenes

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Tensile Properties of the Beta-Nucleated Polypropylenes

Popis výsledku v původním jazyce

According to crystallization conditions isotactic polypropylene can crystallize in several forms denoted alpha, beta and gamma. It is known that the beta phase content can significantly influence the properties of material. It is generally known that beta phase of iPP is less thermodynamically stable than alpha phase. Therefore it may seem that properties, which were improved by presence of beta phase, can change with time as a result of decrease of the beta phase content. That is why the aim of this work is to analyse time stability of the beta phase and its influence on the tensile properties of the injection molded samples. It has been found that the beta phase content has strong effect on the tensile properties; in particular an elongation at breakof the nucleated samples has been improved very significantly. It is also evident that beta phase is time-stable and samples hold their mechanical properties independently of time.

Název v anglickém jazyce

Tensile Properties of the Beta-Nucleated Polypropylenes

Popis výsledku anglicky

According to crystallization conditions isotactic polypropylene can crystallize in several forms denoted alpha, beta and gamma. It is known that the beta phase content can significantly influence the properties of material. It is generally known that beta phase of iPP is less thermodynamically stable than alpha phase. Therefore it may seem that properties, which were improved by presence of beta phase, can change with time as a result of decrease of the beta phase content. That is why the aim of this work is to analyse time stability of the beta phase and its influence on the tensile properties of the injection molded samples. It has been found that the beta phase content has strong effect on the tensile properties; in particular an elongation at breakof the nucleated samples has been improved very significantly. It is also evident that beta phase is time-stable and samples hold their mechanical properties independently of time.

Druh

D - Stať ve sborníku

CEP obor

CD - Makromolekulární chemie

OECD FORD obor

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Projekt

<a href="/cs/project/GP106%2F03%2FP144" target="_blank" >GP106/03/P144: Optimalizace technologických podmínek procesu tokově indukované krystalizace ve vztahu ke struktuře a vlastnostem výrobků</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2003

Kód důvěrnosti údajů

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

Název statě ve sborníku

JUNIORMAT ´03, 4th International Conference, Proceedings

ISBN

80-214-2462-1

ISSN

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e-ISSN

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Počet stran výsledku

4

Strana od-do

132-135

Název nakladatele

Brno University of technology, Faculty of mechanical engineering

Místo vydání

Brno

Místo konání akce

Brno

Datum konání akce

23. 9. 2003

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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