About: The Effect of Aging on the Impact Strength of Beta-Polypropylenes

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Tato práce sleduje časovou stabilitu beta-fáze a rázovou houževnatost beta-nukleovaného vstřikovaného polypropylénu. Za tímto účelem byla přidávána do komerčně užívaného polypropylénu různá množství nukleačního činidla. Z připravených směsí byla vstříknuta tělíska standardně používaná pro stanovení rázové houževnatosti. Jejich morfologie byla studována pomocí rentgenografie, diferenční skenovací kalorimetrie a optické mikroskopie, houževnatost pak pomocí rázové zkoušky dle Charpyho. V prvním kroku byla rázová houževnatost a obsah beta-fáze měřen ihned po vystříknutí tělísek a následně pak byla provedena tytéž měření po dvou letech. (cs) This work focuses on the time stability of the beta-phase and the impact strength of beta-nucleated injection molded polypropylenes. For these purposes, various amounts of a specific beta nucleating agent have been added into commercially available isotactic polypropylene. From the prepared blends standard impact testing specimens have been injection-molded. The structure has been characterized with the aid of wide-angle X-ray scattering, differential scanning calorimetry and light polarized microscopy and toughness has been characterized by Charpy impact testing. At first, a measurement of impact strength and beta-phase content was carried out immediately after injection molding, and as a second step the same values were measured after 2 years This work focuses on the time stability of the beta-phase and the impact strength of beta-nucleated injection molded polypropylenes. For these purposes, various amounts of a specific beta nucleating agent have been added into commercially available isotactic polypropylene. From the prepared blends standard impact testing specimens have been injection-molded. The structure has been characterized with the aid of wide-angle X-ray scattering, differential scanning calorimetry and light polarized microscopy and toughness has been characterized by Charpy impact testing. At first, a measurement of impact strength and beta-phase content was carried out immediately after injection molding, and as a second step the same values were measured after 2 years (en)
Title	The Effect of Aging on the Impact Strength of Beta-Polypropylenes The Effect of Aging on the Impact Strength of Beta-Polypropylenes (en) Vliv stárnutí na rázovou houževnatost beta-polypropylénu (cs)
skos:prefLabel	The Effect of Aging on the Impact Strength of Beta-Polypropylenes The Effect of Aging on the Impact Strength of Beta-Polypropylenes (en) Vliv stárnutí na rázovou houževnatost beta-polypropylénu (cs)
skos:notation	RIV/70883521:28110/04:63502346!RIV/2005/GA0/281105/N
http://linked.open.../vavai/riv/strany	491-504
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(GA103/03/1598)
http://linked.open...iv/cisloPeriodika	5
http://linked.open...vai/riv/dodaniDat	2005
http://linked.open...aciTvurceVysledku	Obadal, Martin Čermák, Roman Šimoník, Josef Stoklasa, Karel
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Tomáše Bati ve Zlíně / Fakulta technologická
http://linked.open...dnocenehoVysledku	561796
http://linked.open...ai/riv/idVysledku	RIV/70883521:28110/04:63502346
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	iPP; beta-phase; time stability; injection-molding; impact strength (en)
http://linked.open.../riv/klicoveSlovo	injection-molding time stability impact strength beta-phase iPP
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[24C514AB1FDB]
http://linked.open...i/riv/nazevZdroje	Journal of Polymer Engineering
http://linked.open...in/vavai/riv/obor	CD
http://linked.open...ichTvurcuVysledku	4 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...vavai/riv/projekt	Possibility of FBC-P utilization in building industry and for neutralization of wastes
http://linked.open...UplatneniVysledku	2004
http://linked.open...v/svazekPeriodika	24
http://linked.open...iv/tvurceVysledku	Čermák, Roman Obadal, Martin Stoklasa, Karel Šimoník, Josef
number of pages	14 (xsd:int)
http://localhost/t...ganizacniJednotka	28110

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