About: Polymer life-time prediction: The role of temperature in UV accelerated ageing of polypropylene and its copolymers

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About: Polymer life-time prediction: The role of temperature in UV accelerated ageing of polypropylene and its copolymers Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Correlation of accelerated ageing data with that of outdoor exposure was carried out based on the comparison of total UV radiation energy (TUVR) needed for degradation of the PP - homopolymer, random copolymer (TOT C2 3.2 wt.%) and impact copolymer (TOT C2 5.4 wt.%) compression moulded 0.5 mm films. Films were stabilized with 1000 ppm butylated hydroxytoluene (BHT), no UV stabilizer was used. Accelerated ageing was realized in a Q-Sun Xe-1 exposure chamber using a filtered xenon light source and a dry cycle. Weathering was carried out at Brno exposure site, representing the typical mid-European climate. Accelerated ageing was carried out at temperatures of 40, 50, 60 and 70 C. In accelerated ageing, both the onset of carbonyl index (CI) increase and the point of reaching the same relative increase in CI as due to weathering were used as measures of polymer degradation. For induction periods attained at different temperatures, TUVR energies were calculated accordingly and compared to that of 6 months o Correlation of accelerated ageing data with that of outdoor exposure was carried out based on the comparison of total UV radiation energy (TUVR) needed for degradation of the PP - homopolymer, random copolymer (TOT C2 3.2 wt.%) and impact copolymer (TOT C2 5.4 wt.%) compression moulded 0.5 mm films. Films were stabilized with 1000 ppm butylated hydroxytoluene (BHT), no UV stabilizer was used. Accelerated ageing was realized in a Q-Sun Xe-1 exposure chamber using a filtered xenon light source and a dry cycle. Weathering was carried out at Brno exposure site, representing the typical mid-European climate. Accelerated ageing was carried out at temperatures of 40, 50, 60 and 70 C. In accelerated ageing, both the onset of carbonyl index (CI) increase and the point of reaching the same relative increase in CI as due to weathering were used as measures of polymer degradation. For induction periods attained at different temperatures, TUVR energies were calculated accordingly and compared to that of 6 months o (en)
Title	Polymer life-time prediction: The role of temperature in UV accelerated ageing of polypropylene and its copolymers Polymer life-time prediction: The role of temperature in UV accelerated ageing of polypropylene and its copolymers (en)
skos:prefLabel	Polymer life-time prediction: The role of temperature in UV accelerated ageing of polypropylene and its copolymers Polymer life-time prediction: The role of temperature in UV accelerated ageing of polypropylene and its copolymers (en)
skos:notation	RIV/00216305:26620/14:PU108853!RIV15-MSM-26620___
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(ED1.1.00/02.0068)
http://linked.open...iv/cisloPeriodika	36
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Tocháček, Jiří
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	Vysoké učení technické v Brně / Středoevropský technologický institut
http://linked.open...dnocenehoVysledku	37415
http://linked.open...ai/riv/idVysledku	RIV/00216305:26620/14:PU108853
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	UV, Accelerated ageing, Weathering, Outdoor exposure, Radiant energy, Degradation, Carbonyl index, Polypropylene, Temperature, Copolymer, Life-time prediction (en)
http://linked.open.../riv/klicoveSlovo	Copolymer Polypropylene UV Temperature Degradation Weathering Accelerated ageing Carbonyl index Life-time prediction Outdoor exposure Radiant energy
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[20A7F87E2DA9]
http://linked.open...i/riv/nazevZdroje	POLYMER TESTING
http://linked.open...in/vavai/riv/obor	CD
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...vavai/riv/projekt	Central european institute of technology
http://linked.open...UplatneniVysledku	2014
http://linked.open...v/svazekPeriodika	2014
http://linked.open...iv/tvurceVysledku	Tocháček, Jiří Vrátníčková, Zlata
issn	0142-9418
number of pages	6 (xsd:int)
http://localhost/t...ganizacniJednotka	26620

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