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Statements

Subject Item
n2:RIV%2F00216305%3A26620%2F14%3APU108853%21RIV15-MSM-26620___
rdf:type
skos:Concept n18:Vysledek
dcterms: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
dcterms: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
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
skos:notation
RIV/00216305:26620/14:PU108853!RIV15-MSM-26620___
n3:aktivita
n16:P
n3:aktivity
P(ED1.1.00/02.0068)
n3:cisloPeriodika
36
n3:dodaniDat
n4:2015
n3:domaciTvurceVysledku
n13:3722023
n3:druhVysledku
n17:J
n3:duvernostUdaju
n5:S
n3:entitaPredkladatele
n7:predkladatel
n3:idSjednocenehoVysledku
37415
n3:idVysledku
RIV/00216305:26620/14:PU108853
n3:jazykVysledku
n12:eng
n3:klicovaSlova
UV, Accelerated ageing, Weathering, Outdoor exposure, Radiant energy, Degradation, Carbonyl index, Polypropylene, Temperature, Copolymer, Life-time prediction
n3:klicoveSlovo
n6:Temperature n6:Degradation n6:Polypropylene n6:Weathering n6:Accelerated%20ageing n6:Outdoor%20exposure n6:Copolymer n6:UV n6:Carbonyl%20index n6:Radiant%20energy n6:Life-time%20prediction
n3:kodStatuVydavatele
GB - Spojené království Velké Británie a Severního Irska
n3:kontrolniKodProRIV
[20A7F87E2DA9]
n3:nazevZdroje
POLYMER TESTING
n3:obor
n14:CD
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
2
n3:projekt
n10:ED1.1.00%2F02.0068
n3:rokUplatneniVysledku
n4:2014
n3:svazekPeriodika
2014
n3:tvurceVysledku
Tocháček, Jiří Vrátníčková, Zlata
s:issn
0142-9418
s:numberOfPages
6
n11:organizacniJednotka
26620